巴西专利BR112013012781B1 chisel retainer and chisel retainer system

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专利摘要:
CHISEL HOLDER AND CHISEL HOLDER SYSTEM WITH A CHISEL HOLDER AND A BASIC PIECE. The present invention relates to a chisel retainer covering an area of the body (12) with at least one chisel opening (18) open in the direction of at least one chisel introducing side (14) of the body area (12) and with a fixing rod (26) that extends from a support side (20) of the body area (12) with a longitudinal axis of the rod, and on the fixing rod (26), on a first side, a fixing organ holding area is provided and on a second side, contrary to the longitudinal axis of the stem, a support area (78) with support face areas (88, 90) inclined in relation to each other , and which extend in the direction of a transition area (92) that extends in the direction of the longitudinal axis of the stem, characterized by the fact that the transition area (92) is shaped as a recess and / or at least an area support face (88, 90) relative to the longitudinal axis of the stem, and protruding axially towards the outside on a basic external circumferential face (94) of the fixing rod (26), which is (...).
公开号:BR112013012781B1
申请号:R112013012781-3
申请日:2011-12-02
公开日:2020-10-27
发明作者:Thomas Lehnert；Karsten Buhr；Martin Lenz；Cyrus Barimani；Gunter Hahn；Karl Kammerer；Bernhard Diesner；Markus Roth
申请人:Wirtgen Gmbh；
IPC主号:

专利说明:

description
[001] The present invention relates to a chisel retainer, covering an area of a body with at least one chisel fitting opening, open towards a chisel introducing side of the body area and with a fixing rod that extends from a support side of the body area, with a longitudinal axis of the rod, with this fixation axis providing for a fixation fastening area on the first side and a second opposite side, relative to the longitudinal axis of the stem, with a support area, with areas of inclined support surfaces, in relation to each other, and extending in the direction of the longitudinal axis of the stem, being sequentially reciprocated in a first transition area.
[002] A chisel retainer of this type is now known from DE 10 2004 057 302 A1. The fixing rod of this known chisel retainer is shaped with a flat cross-section. On a first side, formed as a narrow side, a recess is formed, which, with a face inclined in relation to the longitudinal axis of the stem, offers a face for fixing the fixation area of the fixing organ. On the second opposite side, here also a narrow side, two areas of support surface are essentially flat, converging in relation to each other, and elongated and in a conical shape in the direction of the longitudinal axis, these areas which are also reciprocally sequential in a transition face essentially flat, that is, not curved. These two support areas offer respective centering faces, which will be pressed in the direction of complementary centering faces, that is, areas opposite the support faces of a chisel retainer, by a load applied through a fastening element on the face of the fixation organ.
[003] It is an objective of the present invention, to provide a chisel retainer and a chisel retainer system with a chisel retainer and a basic part, with which the requests that appear on the fixing rod can be transferred to a basic part in a way softer, that is, optimized.
[004] According to the invention, this task will be solved by a chisel retainer that covers a body with a chisel opening, at least open in the direction of a chisel introducing side of the body area, and with a fixation rod with a longitudinal axis of the rod that extends from a support side of the body area, whereas in the fixation rod, on a first side, a fixation organ fixation area is provided and on a second side, contrary with respect to the longitudinal axis of the stem, a support area is provided with areas of sequential support faces, inclined in relation to each other, and extending in the direction of the longitudinal axis of the stem.
[005] In this case, the transition area is also expected to have a shape similar to a recess and / or at least a support face area, relative to the longitudinal axis of the nail, through a basic external circumferential face of the fixing nail it is at least partially shaped, standing out radially outwards.
[006] In spacing from the first transition area between the two areas of support faces, as is known from the state of the art, and essentially flat, according to the first aspect of the chisel retainer according to the invention, it is provided to provide a transition area similar to a recess, that is, recessed towards the interior. It has been shown that this results in an improved distribution of the load, that is, of stresses, on the clamping rod when, on the other hand, a load is applied through a clamping member over the clamping member area and when milling , from the area of the sequential body to the fixing rod, a force is applied uniformly to the fixing rod, and through its support areas, it is applied over a basic part.
[007] According to the alternative aspect or also to be provided for in an additional character of the chisel retainer according to the invention, at least one support area is provided, standing out at least in certain regions to the outside, in a way that this makes it possible to configure this support face area, in a broader independent sense, from the geometric configuration of the fixing rod. This way too, an optimized suitability in relation to the incident requests can be produced, with simultaneous simplification of the machining of the chisel retainer in this area, to offer the necessary precision of the support face area.
[008] The transition area can, for example, in certain regions, be offered by a concave recess, that is, in an arcuate shape and, therefore, also optimized in relation to stress conditions.
[009] Depending on an especially advantageous modality, it can be predicted that in the direction of its circumferential terminal area, far from the transition area, in the direction of its circumferential terminal area, closer to the transition area, an approximation of the radial level of the basic external circumferential face. This conformation avoids an excessive cuneiform effect of the areas of the support faces, basically inclined in relation to each other.
[0010] The transition from at least one support surface area - in its circumferential terminal area, distanced from the transition area - to the basic external circumferential face of the fixing rod, can be shaped in a staggered or / and curved manner.
[0011] Another focus of the fixing load that is also offered in the simplified machining of the chisel retainer, in the sense of a defined area for this purpose, can be achieved by the fact that at least one support face area, in its area axial terminal, located close to the body area, or / and in its axial terminal area, located far from its body area, offers a staggered or / and curved convergence on the basic outer circumferential face.
[0012] A uniform load of the chisel receiver, that is, of the fixing rod, both when subjected by a fixing organ and also in the induction of forces generated during the milling operation, can thus be reinforced in the sense that the face areas of support or / and the transition area are essentially shaped symmetrically with respect to a central retaining plane. It must be indicated that the central retaining plane can be a face located essentially in the geometric center of the retainer, for example, fixed on the longitudinal axis of the rod and a central longitudinal axis of the chisel opening.
[0013] A uniform distribution of forces can be reinforced by the fact that at least one area of the supporting face is shaped curved around the longitudinal axis of the rod. A uniform circular curvature can be envisaged here, that is, essentially in the form of a circle, and due to technical finishing reasons, the two areas of support faces have the same radius of curvature or / and central point of curvature. Alternatively, a curvature with a radius of curvature that changes, for example, from a first transition area in spacing and with an increasing or decreasing radius of curvature, may also be envisaged.
[0014] To reinforce a simple production process for the chisel retainer it is also proposed that the fixing rod in the region of its basic outer circumferential face be conformed to an outer circumferential contour, for example, similar to a circle, round circle, shape oval or elliptical.
[0015] In order to keep the forces acting on the fixing rod in a transverse direction to its longitudinal axis to the smallest extent possible, exerting shear and torsion forces on this area of the body in the border region, it is proposed that a central longitudinal axis of the chisel opening and the longitudinal axis of the rod are inclined with respect to each other at an angle of 6 ° to 24 °, preferably about 12 °. This angle proved to be especially advantageous because it was demonstrated that in the milling operation the forces acting on a chisel generally do not project in parallel with its longitudinal axis and, therefore, neither do they project in the direction of the longitudinal axis of the groove opening. chisel, however they are slightly inclined in relation to this opening. This inclination can be taken into account by applying the longitudinal axis of the rod, relative to the longitudinal axis of the chisel opening.
[0016] According to another advantageous aspect, the fixation rod can cover a fixation organ fixation area, a fixation organ fixation face, as well as the longitudinal axis of the rod and a normal fixation organ fixation surface, being able to be inclined, relative to each other, at an angle of 50 ° to 65 °, preferably about 62.5 °. With this application, comparatively reduced from the normal of the fixation organ's fixation surface, towards the longitudinal axis of the stem, it is achieved that a force exerted approximately also in the direction of this surface normal on the fixation organ's fixation surface, this force exerted by means of a fixing organ, either to the smallest extent possible applied in an inclined direction in the direction of the longitudinal axis of the stem, thus possibly subjecting it in a marked way, in the direction of its longitudinal axis. In this way too, transversal stresses on the rod can be reduced, but in the same way an orientation of this kind of a fixing organ can be ensured, conformed, for example, with a threaded pin, so that in the case of a chisel retainer inserted in a piece access is provided for the fixing organ.
[0017] According to another aspect, the task initially mentioned will be solved by a chisel retainer system, with a chisel retainer constituted preferably according to the invention and a basic part with a fixing rod opening, opened in at least minus the direction of its opposite side of support, and with a fixing organ socket, open in the direction of the opening of the fixing rod, and in the opening of the fixing organ a fixing organ is introduced that can be moved for the purpose of subjecting the area of fixing organ fixation, and in the said opening of the fixation rod there is an area of opposite support, with another transition area that protrudes in the direction of a longitudinal axis of the fixture opening, presenting this transition area opposite support faces, reciprocally sequential.
[0018] An optimization in the shifting effect of force transfer with this chisel retainer can be achieved by the fact that the additional transition area is shaped like a saltiform, for example, by a convex protrusion, so that a shape can be achieved essentially complementary in relation to the transition area, when this unit is shaped with a contour similar to a recess, for example, concave.
[0019] In order to be able to achieve uniformly in the area of the fixing rod fitting opening a conformation of the complementary surface of the fixing rod geometry, it is proposed that at least one area of the opposite support face be formed, in relation to the longitudinal axis of the opening of the fixing rod fitting on an internal circumferential face of the fixing fitting opening, at least in certain regions, shaped protruding radially inwards. In the same way as in the chisel retainer, therefore, only basic machining of certain restricted surface areas is required in the basic part, that is, areas of opposite support, in order to ensure a very exact and special fit between the support area and the area of the opposite support face.
[0020] Here too, it can be provided that at least one area of the opposite support face, at least in its circumferential terminal area, close to the second transition area, protrudes beyond the basic inner circumferential face, approaching in the direction of its circumferential end area, located in its remaining transition area, in the direction of an approximation of the radial level of the basic inner circumferential face or / and at least one area of opposite support face, at least in its axial end area, close to the side of the opposite support or / and in its axial end area, far from the side of the opposite support, present a staggered or / and curved convergence on the basic inner circumferential face.
[0021] In a way corresponding to the shape of the fixing rod, it can also be provided in the basic piece that the fixing opening of the fixing rod, in the area of its basic inner circumferential face or / and in the region of its areas of opposite support surfaces, be conformed to a circular internal circumferential contour. Based on the existence of an internal circumferential contour, basically circular, the fitting opening of the fixing rod, in a comparatively simple way, can be introduced into the basic part, usually produced as a forged part, in a drilling process, that is , milling. The provision of areas of flat surfaces, that is to say, not curved, inside the opening opening of the fixing organ is not necessary.
[0022] A continued decrease in the forces acting on the fixation rod, in a transverse direction towards its longitudinal axis, can be achieved by the fact that the longitudinal axis of the fixation rod opening and a longitudinal axis of the fixation organ opening are inclined, relative to each other, at an angle of 50 ° to 65 °, preferably about 62.5 °.
[0023] The present invention will now be described in detail with respect to the attached Figures. The Figures show:
[0024] Figure 1 - perspective view of a chisel retainer in the direction of view I in Figure 2;
[0025] Figure 2 - perspective view of the chisel retainer in Figure 1, in the viewing direction II in Figure 1;
[0026] Figure 3 - a view of the chisel retainer in the direction of view III in Figure 2;
[0027] Figure 4 - section view of the chisel retainer, cut in a central plane of the retainer;
[0028] Figure 5 - view of the chisel retainer in the direction of visualization V in Figure 1;
[0029] Figure 6 - side view of the chisel retainer;
[0030] Figure 7 - sectional view of the chisel retainer in the area of a fixation rod in section, along line VII-VII in Figure 6;
[0031] Figure 8 - section view of the chisel retainer in the area of a fixing rod in section, along a line VIIl-VI11 in Figure 6;
[0032] Figure 9 - perspective view of a chisel retainer;
[0033] Figure 10 - view of the chisel retainer in Figure 9, in the viewing direction X, in Figure 9;
[0034] Figure 11 - perspective view of the retainer and the mounted chisel retainer;
[0035] Figure 12 - section of the mounted state of the central plane of the retainer in section, according to Figure 11.
[0036] Figures 1 to 6 show a chisel retainer, usually designated with the number 10, for a milling cylinder on a road milling machine. The chisel retainer 10 covers an area of the body 12 with a chisel introducing side generally designated there with the number 14, which extends to an approximately 16 cylindrical shoulder. In the cylindrical boss 16, a chisel fitting opening 18 is provided, that is, crossing the entire area of the body 12. This unit is open on the chisel insertion side 14, to receive an interchangeable chisel that can be attached there by a friction clamping seat, being open in a support area 20 of the body area 12, essentially opposite to the chisel introducing side 14. From this side, a tool can be inserted to remove a worn chisel, promoting its removal from the chisel slot 18 in order to thereby expel the chisel from the chisel opening 18.
[0037] On the support side 20 in the body area 12, a first support area 22 and a second support area 24 are provided at an angle in relation to the first area. It can be seen in the presentations that the chisel fitting opening 18, in the area of the first section of the support face 22, is open towards the support side 20. Projecting essentially from the second area of the support face 24, it finds an elongated fixing rod 26, and extending from the body area 12. The fixing rod 26 is shaped with an external circumferential contour, generally in circular shape, for example, circular and round, or an oval or external contour elliptic. The constructive conformation of the fixing rod 26 will now be further discussed in detail.
[0038] The first support face area 22 involves a first support face 18 and a second support face 30. These two support faces 28, 30 of the first area of the support face 22, are in convergent angular shape and in the direction of a central plane of the retainer, which essentially corresponds to the plane of the drawing in Figure 4, being essentially symmetrically shaped, that is, also applied at the same angle. Here it should be mentioned that the central plane of the retainer can be fixed, for example, by a longitudinal axis LM of the chisel fitting opening 18 and a longitudinal shank face LB of the clamping shank 26.
[0039] The second area of the support face 24 also includes a first support face 32, as well as a second support face 34. The two support faces 32, 34 are angular in shape, one in relation to the other, and therefore also in the direction of the central plane of the retainer, here the conformation with respect to the central plane of the retainer, can be symmetrical in a way corresponding to the conformation of the two support faces 28, 30 of the first area of the support face 22.
[0040] Between the first support face 28 of the first area of the support face 22 and the first support area 32 of the second area of the support face 24 and, in this sense, also between the second support face 30 of the first area of the support face 22 and the second support face 34 of the second support face area 24, first transition areas 36, 38 are formed, extending in a linear direction and preferably in a straight direction, these areas which also define, thus that is to say, also a transition between the first area of the support face 22 and the second area of the support face 24. It can be recognized especially in Figures 1 and 2 clearly that these first transition areas 36, 28 are formed in a bordering area, shaped like an edge, of the respective support faces. Based on the facts that the support faces 28, 30, 32, 34 are preferably all flat, that is, without curvature also these first transition areas 36, 38 of the linear conformation, correspondingly also do not have curvatures.
[0041] A second transition area 40, formed between the first support face 32 and the second support face 34, is formed with a transition face 42, essentially of rectilinear projection. This occupies an essentially orthogonal position towards the central plane of the retainer. As the two support faces 32, 34 are essentially flat, that is, without curvature, this second transition area 40 also extends, essentially, in a rectilinear shape.
[0042] At the point where the two areas of the support faces 22, 24, that is, their support faces 28, 30, that is, 32, 34, are adjacent, that is, in the first transition regions 36, 38 , an angle W1 is formed which is situated in a range of about 137 °. Between the two support faces 28, 30 of the first area of the support face 22, an angle W2 of about 130 ° is formed so that each of these support faces 28, 30 presents in the direction of the central plane of the retainer an angle of inclination of about 65 °. Between the two support faces 32, 34 of the second area of the support face 24 is forming an angle W3 of about 110 °, so that each of these support faces 32, 34 presents in the direction of the central plane of the retainer an angle inclination of about 55 °. In general, this means that the two support faces 28, 30 of the first support face area 22 are arranged at a greater angle between them included than occur with the two support faces 32, 34 of the second face area. support 24. In addition, a longitudinal axis of rod LB, relative to the area of the body 12, is so oriented that the fixing rod 26 is inclined towards the first area of the bearing face 22 and the second area of the support face 24, at an angle W4, ie W5, respectively around 65 °. For example, the angle W4 can be located in a range of 6 2> whereas the angle W5 can be located around 64 °. Here it should be indicated that to determine these angles W4, W5 a line can be used that interconnects the respective support faces 28, 30, that is, 32, 34 in its imaginary extension, that is, in the case of the support faces 32, 34, the angle W5 also in relation to the transition face 42 of the second transition area 40 and in the case of the support faces 28, 30, the angle W4 can also be determined directly in the chisel retainer 10, relative to a transition face 43 another transition area 41. The global angle formed by the sum of the two angles W4 and W5 can therefore be situated in a range of about 1310 and defines the angle of application of two prism-like configurations, one of which is being defined by the two support faces 28, 30 of the first support area 22, the other being defined by the two support faces 32, 34 of the second area of the support face 24. By the variation of this general angle, that is, the sum of the two angles W4 and W5, in the case of angles W2 and W3, retained in the same way, the geometry of the pyramidal arrangement can be influenced by the four support faces 28, 30, 32, 34, being especially supported a concentration of forces in the direction of an imaginary pyramidal apex point.
[0043] Based on the angular orientation of the different areas of support faces 22, 24, that is, of their support faces 28, 30, 32, 34 and based on the orientation of the fixing rod 26, relative to the body area 12, it is A concentration of the forces induced in the milling operation in the body area 12 is obtained, in such a way that transverse forces that subject the transition between the body area 12 and the clamping rod 26 by shear, are markedly reduced. This also contributes to the fact that an angle W6, formed between the longitudinal axis of the rod LB and the longitudinal axis LM of the opening of the chisel fitting 18 and, therefore, within a longitudinal axis of the chisel, is situated in a range 12.5 °.
[0044] Figures 9 and 10 show a basic piece 44 that can be used in connection with the chisel retainer 10 described above. Figures 11 and 12 show this basic part 44 in the assembly, with a chisel retainer 10.
[0045] In the base piece 44, a rod fixing opening 46 is formed, which is open, both in a supporting face 48, which can be recognized in Figure 9, at the top, as well as a joining side 50 of the basic part 43, which can be seen in Figure 10, is open. In the region on the connection side 50, the basic part 44 will be fixed, for example, by welding on a milling cylinder.
[0046] On the opposite support side 48, allocated in relation to the first area of the support face 22, a first area of the opposite support face 52 is formed. Allocated to the second area of the support face 24, a second area of the support face is formed. opposite support face 54. The first area of the opposite support face 52 covers, in allocation to the first support face 28 of the first area of the support face 22, covers a first counter face 56 and covers, in allocation to the second face support area 30 of the first area of the support face 22, comprises a second support face 58. Correspondingly, the second area of the opposite support face 58, in allocation to the first support face 32 of the second area of the support face. support 24, covers a first counter face 60 and, in allocation to the second support face 34 of the second area of the support face 24, a second counter face 62. The respective counter faces 56, 58, 60 , 62 are angled reciprocally, corresponding to the respective s angular shapes of the support faces 28, 30, 32, 34 of the chisel retainer 10, being shaped flat, so that the support faces and allocated support faces, in relation to each other, can abut adjacent to each other and spatial.
[0047] Between the first counter face 56 and the second counter face 58 on the one hand, and between the first counter face 60 and the second counter face 62, on the other hand, a third is formed transition area 64, 66, in the form of a recess. Likewise, between the two areas of the support faces 52, 54, that is, between the first support face 56 and the second support face 60, that is, the second support face 58 and the second supporting face 62, a fourth transition area 68, 70 is formed, similar to a recess. Through these transition areas 64, 66, 68, 70, conformed, for example, with at least a partially rounded contour and similar to indentations, on the one hand, notch stresses that arise in the induction of milling forces will be avoided. On the other hand - as is clearly shown in the presentations of Figures 11 and 12 - in the transition areas similar to recesses 64, 66, 68, 76, space is created for the different transition areas of the chisel retainer 10, where their chisel faces support converge reciprocally. This means that even when in the area of the support faces, leaning against each other, that is, in the support counter-faces, wear is present, allowing for readjustment and, correspondingly, greater penetration of the former, ie , of the second transition areas, in the third, that is, in the fourth transition area.
[0048] Based on Figures 9, 11 and 12, it can be clearly recognized that the support side, formed in the chisel retainer 10, on the one hand, and the support face 48, formed in the basic part 48, are shaped differently, especially in a complementary sense with the support faces, that is, with the support counter faces that establish reciprocal contact. Therefore, by supporting faces, that is, different supporting faces, adjacent in the shape of a prism, a funnel-shaped configuration is formed that guarantees a stable support of the chisel retainer 10 and the basic part 44 and also in the transverse direction towards the fixing rod 26, that is, the longitudinal axis of the rod LB. In general, this results in a relief of the fixation rod 26, especially in the transverse direction, with which the danger of rupture of the fixing rod is considerably reduced.
[0049] In addition to the shifting support effect, explained in detail above, between the chisel retainer 10 and the basic piece 44 in the area of the support side 20, that is, on the opposite support side 48, in the chisel retainer system, constituted according to the invention, another relief of the fixing rod 26 is obtained by its changing stop action with the base piece 44, in the area of its fixing opening of the fixing rod 46. This aspect and the aspect of the support above already explained in detail can be specifically, and exclusively, clear relief, that is, a more uniform distribution of force. These occurrences will, however, be especially advantageous when they are carried out in combination with the same chisel retaining system.
[0050] The fixing rod 26 of the chisel retainer 10 presents on a first side, approaching in an area below the first area of the support face 22, presents a fixation organ attachment area 76 and presents on a second side, contrary to the longitudinal axis of the rod LB, it has a support area 78. The area of attachment of the fixing organ is shaped similar to a notch with a face of fixing organ 80, whose spatial normal FM, relative to the longitudinal axis of the rod LB, is located under an angle W7, comparatively small of about 62.5 °. This means that the fastening member 82 provided for in the basic part, whose central longitudinal axis is approximately oriented in parallel to the normal of the FN plane, is essentially in an orthogonal direction to the fastening member face of the fastening member 80, generating in the fastening of the fixation rod 26, a component of comparatively intense force in the direction of the longitudinal axis of the rod LB. Here, it should be indicated that the fixing organ 82 is integrated in a fixing organ fitting opening 84 of the basic piece 44 which is at least partially formed with an internal thread, so that the fixing organ 82, correspondingly conformed at least in certain regions with an external thread, it can be approached by a turning movement, that is, by screwing in the direction of a longitudinal axis of opening of the LO fixing body, in the direction of the fixing body attachment face 80, in the direction of approach or departure.
[0051] Based on the geometric relationships discussed above, the longitudinal axis of the fitting opening of the LO fixing organ, in relation to a longitudinal axis of the fitting opening of the fixing rod LA, which in an assembled state - at least in relation to its orientation - essentially it also coincides with the longitudinal axis of the rod LB, being under the angle W7 of about 26.5 °.
[0052] If the fixing member 82 is displaced by the screwing movement inside the opening opening of the fixing member 84, being pressed against the fixing body holding face 80, then the fixing rod 26, with its support area 78, will be pressed against a counter-area 86 of the base piece 44. The support area 78 is formed by two regions of the support face 88, 90, which, in relation to each other, extend in an angular shape, that is, inclined, especially presenting a preferably circular curved path, in the circumferential direction, around the longitudinal axis of the rod LB. In a central area of the support area 78, these two areas of support faces 88.90 are reciprocally aligned in a fifth transition area 92. This fifth transition area 92 is shaped like a recess, preferably with a concave recess profile protruding in the direction of the longitudinal axis of the LB stem.
[0053] It can be clearly recognized that the areas of the support faces 88, 90 of the support area 78 are so shaped that they surpass, at least in certain regions, a basic outer circumferential face 94 of the fixing rod 26, standing out radially in relation to the longitudinal axis of fixation LB. The conformation is such that this radial projection is smaller in the central area of the support area 78, that is, where the fifth transition area 92 is formed, so that at that point, for example, there is almost no protrusion. radial, while in the circumferential direction and away from the fifth transition area 82, this radial protrusion increases. It can be recognized especially that both in the axial end areas of the support face areas 88, 90, as well as in the circumferential direction of the fifth transition area 92, distant end faces show a staggered transition, possibly also slightly curved towards the circumferential face basic outer 94 of the fixing rod 26.
[0054] Due to the conformation of the fixing rod 26 in the form and manner described above, this rod, when subjected by the securing member 82 in two spatial areas located laterally in relation to the central retaining plane, that is, essentially supporting itself with the faces of the support faces 88, 90, in the base piece 44. This results in a pressure distribution and prevents a linear support contact in the circumferential center of the support area 78. Especially, due to the fifth transition area 92, shaped similar to a recess, it is provided that in this center of the support area 78 no forces are transmitted, or only reduced, between the fixing rod 26 and the basic part 44.
[0055] Another essential advantage of the areas of the support face 88, 90 that protrude radially over the basic outer circumferential face 94 is that localized and limited surface areas are used to generate a stop between the fixing rod 26, that is, the chisel retainer 10, and the base piece 44. As well, the chisel retainer 10 as well as the basic piece 44 are generally offered as forgings and, therefore, those surfaces on which there is reciprocal support so that the necessary precision, they need to be machined with chip removal or with finishing, and this work step can be restricted to the surface areas for which it is effectively foreseen, that is, in those points where the areas of the support faces are formed 88, 90.
[0056] Correspondingly to the support area 78 on the fixing rod 26, in the basic part 44 it is conformed to the counter support area 86. The counter support area 86 presents in allocation to the areas of support faces 88, 90, areas of support opposite support faces 96, 98. These are in a sixth transition area 100 reciprocally, the sixth transition area 100 being shaped as projections, preferably with a projection 102 that is elongated and arched in a convex direction in the direction of the axis longitudinal opening of the LA fastening opening. This projection, due to technical production reasons, can be offered in the form of an insertion piece 104 that is inserted in an opening 106, corresponding to the basic part, that is, with a pressed fit, and with a circumferential area of this unit, for provide the protrusion 102, it stands out in an internal radial direction on the two counter-areas of support faces 96, 98.
[0057] The areas of the counter-bearing faces 96, 98 are so shaped in the fixing slot opening 46 that at least in certain regions they protrude beyond an internal circumferential face 108 from the fixing opening of the fixing rod 46, radially inwards, relative to the longitudinal axis of the fitting opening of the LA fixing rod. The conformation can be made in such a way that close to the sixth transition area 110, this radial projection is maximum, and in the circumferential direction, in the direction of separation from the sixth transition region 100, so that progressively the counter faces 96, 98 converge on the basic inner circumferential face 108. Just as in the conformation of the fixing rod 100, that is, of the support area 78, here too, a restriction of the surface areas to be machined is achieved in order to offer a precise contact contact in the areas of the supporting faces 96, 98, which especially in their two axial end areas, can converge again in a staggered way, that is, in a curved shape, on the basic inner circumferential face 108 in the basic part 44.
[0058] Corresponding to the inclination achieved by the curved path of the two areas of support faces 88, 90 in a reciprocal direction, also the two areas of support faces 96, 98 are inclined, in relation to each other, ie , here they are conformed with a curved path, and this curvature can correspond to the curvature of the two areas of support faces 88, 90, in order to achieve a contact contact over a large area. As the areas of support faces 88, 90 and also the areas of support faces 96, 98 stand out only in a circumferential area, in addition to the external circumferential counter face 94, that is, the internal circumferential face 108, the a fixing rod 26, basically with lateral movement clearance, can be introduced in the fixing opening of the fixing rod 46, and only by moving the fixing organ 82 over the circumferential face of the fixing organ 80, a firm contact is produced between the areas of supporting faces 88, 90, and the areas of the supporting faces 96, 98. A contact resulting in increased pressure from the two transition areas 92, 100 will then be avoided. Its functionality lies essentially in that, even during the introducing movement of the chisel retainer 10 in the basic part 44, even before the support side 20 and the counter support side 48 start to act in a centralizing direction, an orientation is achieved chisel retainer 10, relative to the basic part 44.
[0059] For a very uniform distribution of forces in the support of the movement rod 26 in the counter support area 94, it also contributes the fact that both the support area 78, as well as the counter support area 86, are formed in the direction from the retainer plane, that is, to a symmetrical plane corresponding to this plane, of the basic part 44, in symmetrical form, especially in a symmetrical point shape.
[0060] It should be noted that a solution formed according to the principles of the present invention and relatively simple construction, in view of the support area 78 and the counter support area 86, can also be constituted in such a way that the support area 78 is provided basically on the outer circumferential face of the fixing rod 26 without protrusions, on its basic outer circumferential face 94, that is, for example, the basic outer circumferential face 94, offered with a circumferential, approximately rounded contour , also offers the two support spatial regions 88, 90 on both sides of the transition area 92 shaped as a recess. This transition area 92 similar to a recess, in this conformation, basically can also be conformed with areas of support faces 88, 90, radially protruding from the basic outer circumferential face 94 such as, for example, a transition face, essentially flat , between the spatial support areas in bilateral circumferential direction, in relation to these areas, that is, a face which, relative to the circumferential contour defined by the external circumference of the fixing rod 26, is recessed radially inwards. An essentially flat conformation, for example, obtained by machining with material removal or also in the casting process, due to the simple production feasibility, is especially advantageous. Basically, however, a transition face could also be provided in the transition area 92, approximately curved in a flattened direction, relative to the curvature of the fixing rod 26. A corresponding geometry can then naturally also be provided in the counter support area 86, in the part basic 44. Also there the areas of the counter-support faces 96, 98 could be integrated in the basic internal circumferential face 108, therefore, it is not necessary to stand out radially towards the interior, in relation to these units. In conformity with the conformation of the transition area 92 between the support face areas 88, 90 of the support area 78 also, then, the transition area 100 between the two against support face areas 96, 98 can be formed, for example, as an essentially flat transition face, which should then be positioned in the opposite direction from the correspondingly shaped circumferential face of transition area 92. In a conformation of this nature - similarly as this can also be recognized in Figures 1 and - the support area 78 may be provided in the free axial end area of the fixing rod 26, so that starting from a circumferential contour, essentially circular and round of the basic outer circumferential face 94, which also offers the areas of the support faces 88, 90 , the free axial end area of the fixing rod 26 may be provided, for example, a recessed transition area 92 and similar to a recess in the circular circumferential contour, ba already existing. With this configuration, especially in the free axial end area of the fixing rod 26, that is, where, due to the fixation effect of the fixing organ 82, the fixing rod 26 is pressed with greater intensity against the basic part 44, the relief indicated above for avoiding a contact linear and therefore very requested, will be achieved between the fixing rod 26 and the basic part 44.
[0061] For the conformation of the chisel retainer and the basic part on the side of the support, that is, on the opposite side of the support, as well as in the area of the support, that is, in the counter support area with the different support areas and against the areas of support faces, a defined positioning of the chisel retainer is achieved, with simultaneous relief of the chisel retainer, especially in the area of the fixing rod. To this end, it contributes the fact that the load distribution is planned for a variety of areas of support faces, that is, of support faces as against areas of support faces, arranged in a defined reciprocal direction, in which the chisel and the base piece touch directly in a reciprocal direction. This means that, in the sense of the present invention, a support face area, that is, a counter area of support faces with the respective faces that serve for reciprocal support, are so shaped or machined that a contact can be generated metal-to-metal backrest. As both the basic part and the chisel retainer are generally produced as forged parts, the surfaces that in the sense of the present invention act as areas of support faces, that is, areas of counter faces, are basically produced with removal of chips or / and are machined sequentially. In this way and form, substantial relief and exact positioning with the necessary high precision on their surfaces can be guaranteed, which could not be achieved on a surface only worked in a forging process.
[0062] For the assembly of the system described above in a milling drum that can be rotated, in a basic part fixed by welding, the chisel retainer 10 with its fixing rod 26 will be inserted in the opening opening of the fixing rod 46 , provided in the basic part 44, until the two support areas 22, 24 of the chisel retainer 10 start to touch the respective areas of counter faces 52, 54, belonging to the basic part. Then, the fixing member 86, for example, shaped into a threaded shape, will be tightened, so that it will be moved further into the opening opening of the fixing member 84, being pressed against the fixing face of the fixing member 80, on the stem fastener 26. In this way, on the one hand, a changing effect of a stable backrest is achieved between the areas of the support faces 22, 24 and the areas of the support faces 52, 54. On the other hand, a backrest will be achieved support area 78, that is, the two support face areas 88, 90 of this unit, in the counter support area 86, that is, in the two support face areas 96, 98.
[0063] As during the operation of a milling machine there is wear not only of the chisels that are fitted to the chisel retainer 10, but wear may also be present in the area of the chisel retainer 10 itself, by reversing the process described above, that is , by removing the fixing organ 82 from the fixing rod 26 and extracting the chisel retainer 10, that is, from the fixing rod 26 of this unit of the basic part 44, a worn chisel retainer 10 can be removed, being replaced by a new retainer. chisel or a chisel retainer with less wear. This will be introduced - in the form described above with its fixing rod 26 - in the corresponding slot of the fixing rod 46, in the basic part 44, being fixed with the fixing organ 82. This process, with repeated wear, can then naturally be carried out several times in connection with the same basic part, fixed on a milling drum. If wear is also present in the area of a basic part, then naturally it can be released from a milling drum by cutting a welded connection that holds it and can be replaced by a new basic part.

权利要求:
Claims (22)
[0001]
1. Chisel retainer comprising, - a body area (12) with a chisel slot opening (18) at least open towards a chisel-inlet side (14) of the body area (12), - a fixing rod (26) with longitudinal rod axis (LA) that extends from a supporting side (10) of the body area (12), whereas in the fixing rod (26), on a first side, it is provided a fixing organ holding area (76) and on a second, opposite side, in relation to the longitudinal axis of the stem (LB), a support area (78) with sloping support face areas (88, 90) is provided one in relation to the other, sequential in a transition area (92) that extends in the direction of the longitudinal axis of the stem (LB), characterized by the fact that - the transition area (92) is shaped like a recess and - at least one area of the support face (88, 90), with respect to the longitudinal axis of the rod (LB), is shaped, standing out radially outwards only on a basic external circumferential face (94) of the fixing rod (26), this projection being radial towards the outside at least in certain regions.
[0002]
2. Chisel retainer according to claim 1, characterized by the fact that the transition area (92) is offered in certain areas by at least one concave recess.
[0003]
3. Chisel retainer according to claim 1 or 2, characterized by the fact that at least one support face area (88, 90) extends from its circumferential area, distant from the transition area (92), in the direction of its circumferential terminal area located close to the transition area, approaching the radial level of the basic external circumferential face (94).
[0004]
Chisel retainer according to any one of claims 1 to 3, characterized by the fact that at least one area of the support face (88, 90) converges in its circumferential area, distant from the transition area (92), in staggered or / and curved direction, on the basic outer circumferential face (94) or / and at least one area of supporting faces (88, 90) in its axial end area, close to the body area (12), or / and its axial terminal area distant from the body area (12) converges in a staggered or / and curved manner on the basic outer circumferential face (94).
[0005]
Chisel retainer according to any one of claims 1 to 4, characterized in that the areas of the support faces (88, 90) or / and the transition area (92), relative to a central retaining plane, they are essentially symmetric shaped.
[0006]
Retainer according to any one of claims 1 to 5, characterized by the fact that at least one support face area (88, 90) is curved around the longitudinal axis of the rod (LB).
[0007]
7. Retainer according to claim 6, characterized by the fact that the two areas of support faces (88, 90) have the same radius of curvature or / and central point of curvature.
[0008]
8. Retainer according to one of claims 1 to 7, characterized by the fact that the fixing rod (26) in the area of its basic outer circumferential face (94) is formed with the circular outer contour, being round, oval or elliptical.
[0009]
Retainer according to any one of claims 1 to 8, characterized in that its central longitudinal axis (LM) of the chisel opening (18) and the longitudinal axis of the rod (LB) are inclined one with respect to the other at an angle from 6o to 24 °.
[0010]
10. Retainer according to claim 9, characterized by the fact that its central longitudinal axis (LM) of the chisel opening (18) and the longitudinal axis of the rod (LB) are inclined with respect to each other in one 12 ° angle.
[0011]
11. Retainer according to any one of claims 1 to 10, characterized by the fact that the attachment area of the fixing member (76) comprises a fixing face of attachment member (80), and the longitudinal axis of the rod (LB) and a spatial normal (FM) of the face of the fixation organ (80) are inclined with respect to each other at an angle of 50 ° to 65 °.
[0012]
12. Retainer according to claim 11, characterized by the fact that the holding area of the fastening organ (76) comprises a fastening organ fastening face (80), and the longitudinal axis of the rod (LB) and a spatial normal (FM) of the attachment face of the fixing organ (80) are inclined with respect to each other at an angle of 62.5 °.
[0013]
13. Chisel retainer system, comprising: - a chisel retainer (10), as defined in any of the preceding claims, - a basic part (44) with a clamping rod opening (46) open in the direction at least on an opposite support side (48), and a fastening organ socket opening (84) open in the direction of a fastening rod socket opening (46), with the fastening organ socket opening (84) being integrated a fixing organ (82) movable to hold the fixing area of the fixing organ (76), characterized by the fact that the counter opening area (86) with another transition area is provided in the opening opening of the fixing rod (46) (100) extending in the direction of a longitudinal axis of the opening of the fixing socket (LA), with opposite support areas (96, 98) which are reciprocally sequential.
[0014]
14. Chisel retaining system according to claim 13, characterized in that the other transition area (100) is formed as a projection.
[0015]
Chisel retaining system according to claim 13 or 14, characterized in that the other transition area (100), at least in certain areas, is formed by a convex protrusion.
[0016]
Chisel retaining system according to any one of claims 13 to 15, characterized in that the additional transition area (100) is shaped to complement the transition area (92).
[0017]
17. Chisel retaining system according to any one of claims 13 to 16, characterized in that at least one area of supporting faces (96, 98) is formed in a projecting direction inwardly radially relative to the longitudinal axis of the fixing slot opening (LA) through a basic inner circumferential face (108) of the fixing rod slot opening (46), this radial protrusion being internal at least in regions.
[0018]
18. Chisel retaining system according to claim 17, characterized by the fact that at least one supporting face area (96, 98) protrudes at least in a circumferential terminal area, close to the additional transition area (100 ), standing out beyond the basic inner circumferential face (108) and approaching in the direction of its circumferential area distant from its additional transition area (100), approaching the radial level of the basic inner circumferential face (108).
[0019]
19. Chisel retaining system according to claim 17 or 18, characterized by the fact that at least one area of the opposite support face (96, 98) converges at least in its axial end area, close to the counter-support side ( 48) or / and in its axial terminal area located away from the opposite side of support (48), in a staggered or / and curved shape, thus converging on the basic inner circumferential face (108).
[0020]
20. Chisel retaining system according to any one of claims 13 to 19, characterized by the fact that the opening of the fixing rod (46) in the area of its basic inner circumferential face (108) or / and in the area of its regions of supporting faces (96, 98) are shaped with a circular internal contour.
[0021]
21. Chisel retaining system according to any one of claims 13 to 20, characterized in that the longitudinal axis of the fixing rod fitting opening (LA) and a longitudinal axis of the fixing fitting opening (Lo) are reciprocally inclined at an angle of 50 ° to 65 °.
[0022]
22. Chisel retaining system according to claim 21, characterized by the fact that the longitudinal axis of the fixing rod socket opening (LA) and a longitudinal axis of the fixing hole socket opening (Lo) are reciprocally inclined in one 62.5 ° angle.

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同族专利:

公开号 | 公开日

TW201233494A|2012-08-16|

US20130241265A1|2013-09-19|

CN102486022B|2014-09-17|

JP5822940B2|2015-11-25|

SG190927A1|2013-07-31|

JP2014503718A|2014-02-13|

KR101753305B1|2017-07-03|

BR112013012781A2|2016-09-13|

RU2563008C2|2015-09-10|

CN202788849U|2013-03-13|

AU2011334855A1|2013-05-30|

RU2013130261A|2015-01-10|

WO2012072802A3|2012-11-22|

TWI468253B|2015-01-11|

KR20140056134A|2014-05-09|

AU2011334855B2|2016-06-23|

WO2012072802A2|2012-06-07|

US9163502B2|2015-10-20|

CN102486022A|2012-06-06|

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法律状态:
2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

2019-08-20| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

2020-03-24| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]|

2020-06-30| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

2020-10-27| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 02/12/2011, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

申请号 | 申请日 | 专利标题

DE102010061019.4|2010-12-03|

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EP11172527.1|2011-07-04|

EP11172527.1A|EP2543815B1|2011-07-04|2011-07-04|Chisel holder and chisel holder system with a chisel holder and a base section|

PCT/EP2011/071642|WO2012072802A2|2010-12-03|2011-12-02|Chisel holder, and chisel holder system comprising a chisel holder and a base part|

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