• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    SAW BLADE FOR SAWING HOLLOW AND MOLDING PROFILES A saw blade (1) is used for sawing hollow or molding profiles, particularly metal. The saw blade (1) is particularly structured as a band for continuous saws and has a basic body (2) and a plurality of teeth (10) adjacent to the basic body (2) with a wire (6) respectively. The teeth (10) are formed by means of projections (3) of the basic body (2), to which respectively an interleaved piece (4) of a material is attached, which is harder than the material of the projections (3) and of the basic body (2). A part of the teeth (10) is arranged in a repetitive group along the basic body (2) of at least three untucked chamfered teeth (10). The group has a first tooth (C1) with two chamfers (FC11, FC12), which run symmetrically towards the median longitudinal plane (9) of the saw blade (1), a second tooth (C2) with two chamfers (FC2 i , FC22), which run asymmetrically towards the median longitudinal plane (9) and a third tooth (C3) with two chamfers (FC3i, FC32), which run asymmetrically towards the median longitudinal plane (9).
    公开号:BR102012010626B1
    申请号:R102012010626-4
    申请日:2012-05-04
    公开日:2021-02-17
    发明作者:Dr. Jörg H. Kullmann；Martin Hentschel；Dr. Patrick Gleim
    申请人:WIKUS-Sägenfabrik Wilhelm H. Kullmann GmbH & Co. KG；
    IPC主号:
    专利说明:

    [0001] The invention relates to a saw blade for sawing hollow profiles and / or molding profiles. The saw blade has a basic body and a plurality of teeth adjacent to the basic body with, respectively, a wire. The teeth are formed by protrusions of the basic body, in which a piece interspersed with a material that is harder than the material of the protrusions and the basic body is fixed. At least part of the teeth is in a group of at least three teeth that are not locked, repetitive along the basic body.
    [0002] Saw blades of this kind can consist mainly of a long saw blade with a linear arrangement of the teeth in sequence, as an arc saw blade or as a circular saw blade. The basic body is composed of metal and the teeth are preferably composed at least in part of carbide or carbide insert parts, the saw blade being particularly suitable for sawing metal materials. STATE OF ART
    [0003] A saw blade with a basic body and a plurality of teeth adjacent to the basic body with a wire is known from the German patent application DE 42 00 423 A1. The teeth are in a repetitive group along the basic body, with the group having at least three unlocked chamfered teeth of different widths and heights. All teeth in the group in turn have at least two chamfers that are symmetrical in relation to the median longitudinal plane of the saw blade. Through this special group technique with unlocked teeth, the result is a particularly high cutting performance with stabilized straight work, without the risk of the saw blade going sideways, an aspect that clearly differentiates the saw blade from saw with locked teeth or those according to the roughing and cutting technique.
    [0004] Another comparable saw blade is known from the German patent application DE 43 00 622 A1.
    [0005] A saw blade with a basic body and a plurality of teeth adjacent to the basic body with a wire is also known from the German patent application DE 100 30 168 A1. The teeth are alternately not locked, locked to the left and locked to the right. In that sense, all the teeth - or at least the locked teeth - have the same widths and heights. OBJECTIVE OF THE INVENTION
    [0006] The invention aims to provide a saw blade, which is particularly suitable for sawing hollow and molding profiles, in particular metal. SOLUTION
    [0007] The objective is achieved in accordance with the invention with the characteristics of the independent claims.
    [0008] Other preferred designs according to the invention are found in the dependent claims. DESCRIPTION OF THE INVENTION
    [0009] The invention relates to a saw blade for sawing hollow and molding profiles. The saw blade has a basic body and a plurality of teeth adjacent to the basic body with, in turn, a thread. The teeth are formed by protrusions of the basic body, in which a piece interspersed with a material that is harder than the material of the protrusions and the basic body is fixed. At least part of the teeth are in a group, consisting of at least three chamfered teeth that are not locked, repetitive along the basic body. A first tooth in the group has two chamfers, the chamfers being symmetrical in relation to the median longitudinal plane of the saw blade. A second tooth in the group has two chamfers, which are asymmetrical in relation to the median longitudinal plane of the saw blade, the first chamfer being in the first direction from the median longitudinal plane and having a first chamfer angle, and meeting at second chamfer in the other second direction from the median longitudinal plane and having a second greater chamfer angle. A third tooth in the group has two chamfers, which are asymmetrical in relation to the median longitudinal plane of the saw blade, the first chamfer being in a first direction from the median longitudinal plane and having a first chamfer angle, and meeting the second chamfer in the other second direction from the median longitudinal plane and having a smaller second chamfer angle.
    [0010] The first chamfer angle of the second tooth can be - but not necessarily - the same as the second chamfer angle of the third tooth. The second chamfer angle of the second tooth can be - but not necessarily - the same as the first chamfer angle of the third tooth. Definitions
    [0011] The teeth of the saw blade according to the invention are designed and arranged towards a special shape of the group technique, according to which the group has at least three teeth. The groups are repeated along the length of the saw blade, possibly with intercalation of other teeth. This special group technique is differentiated from the so-called roughing and trimming technique and also from the simple repetitive arrangement, with one tooth not locked, one tooth locked to the left and one tooth locked to the right.
    [0012] The designation of the teeth "first tooth", "second tooth" etc. first it only serves to differentiate the teeth and does not necessarily refer to the sequence in which they are found on the saw blade. In any case, one possibility is that the teeth are in precisely that sequence - possibly with intercalation of other teeth.
    [0013] Due to its particular geometry, the new saw blade is particularly suitable for sawing hollow profiles or molding profiles, in particular metal. However, this does not mean that it is also not possible to saw other pieces of work. The saw blade teeth are designed so that they are very suitable for lifting chips of optional profiles - for example, in individual cuts, layers or arches - and, in particular, of materials containing steel designed in the form of a hollow profile and / or molding profile.
    [0014] The saw blade can be designed mainly as a long saw blade with a linear and consecutive arrangement of the teeth, in the form of an arc saw blade or else as a circular saw blade. Description continued
    [0015] Unlike a saw blade with symmetrically chamfered teeth not locked in the group, the new geometry of the saw blade teeth has, when sawing hollow profiles and molding profiles, the advantage of, due to the different chamfers in a part of the teeth, the burr must be cleanly and evenly separated when the saw blade passes or leaves the cutting channel in the workpiece.
    [0016] The free cut necessary for an effective saw blade cut is therefore achieved through a special kind of polishing of the teeth chamfers and thus of the respective wires.
    [0017] The disadvantage of a tooth projection caused by a state of the art braking is that, due to braking tolerances, non-uniform tooth projections occur and with this the cutting channel can be formed irregularly and this can lead to cuts with burrs. The distribution of the volume to be removed from shavings and the distribution of cutting forces on the teeth occurs irregularly. This can lead to the intended straight path of the saw blade being negatively affected. In this way, the quality of the sawn surface is also reduced. In addition, the basic body of the saw blade is weakened by braking, due to the deviation from the median longitudinal plane, and the great forces, originated in a lifting of chips with high cutting yields, cannot be transferred to the basic body, and it can lead to the teeth breaking or a rupture of the support material.
    [0018] Compared to this, the saw blade according to the invention has a number of advantages. The teeth or their threads are designed to achieve a cut with little burr and no vibration when sawing. In this way, subsequent work on the sawn workpiece is avoided or reduced. In order to obtain a cutting channel with a very uniform width and in order to avoid deviations, the teeth are not locked. Instead, a portion of the teeth has an asymmetrical polish, making it possible to achieve very precise cuts (ie with reduced shape deviations) and cuts with little burr, and to ensure a smooth and clean cut surface with a long service life. of the saw blade. The production of the new saw blade is cheaper compared to the locked saw blades, as there is no additional step of braking work.
    [0019] There are many possibilities in terms of the arrangement or sequence of the teeth. In order to improve the oscillation sensitivity of the saw blade, the split between the teeth - that is, the distance between two adjacent teeth - may vary and, for example, may not be uniform or be irregular.
    [0020] The teeth preferably have a positive orthogonal cutting angle and, above all, an orthogonal cutting angle of about 1 ° to 20 °, in particular about 10 °.
    [0021] The teeth can have different widths and, preferably, also different heights. Such a provision is also referred to as a width and height graduation. Each tooth is thus assigned a certain part of the cutting channel. The height of the first symmetrical tooth can be between 0.02 mm and 0.2 mm, in particular about 0.03 mm, greater than the height of the second and third asymmetric teeth. The chamfering angle of the first symmetrical tooth is between 20 ° and 60 °, in particular about 45 °. Asymmetrical teeth have chamfering angles between 5 ° and 45 °, with the chamfering angles being combined between them, so that when sawing, the forces on the teeth are to some extent evenly distributed. Due to the chamfering angle described above, a very stable tip of the respective tooth originates.
    [0022] The group of teeth may have another or other unlocked chamfered teeth. To it belongs a fifth tooth, which has two chamfers, which are asymmetrical in relation to the median longitudinal plane of the saw blade, the first chamfer being in the first direction from the median longitudinal plane and having a first chamfer angle, and the second chamfer along another second direction from the median longitudinal plane and having a smaller second chamfer angle. A sixth tooth has two chamfers, which are asymmetrical in relation to the median longitudinal plane of the saw blade, the first chamfer being in the first direction from the median longitudinal plane and having a first chamfer angle, and meeting at second chamfer in the other second direction from the median longitudinal plane and having a second greater chamfer angle. By increasing the number of asymmetrically chamfered teeth that are not locked - possibly by placing other symmetrically chamfered teeth - the areas to be sawn in the cutting channel through the respective tooth are further reduced, thus cutting forces are evenly distributed. uniform, with lower forces acting on the respective tooth and further improving the quality of the sawn surface. This is also achieved through proper adjustment and coordination of the chamfering angles between them. In this case, it is preferred that there are asymmetrically chamfered teeth not locked in the group, whose chamfering angles are in the precisely inverse arrangement next to another tooth. In other words, a first tooth has a first chamfer angle in the left area of its wire and another second chamfer angle in the right area of its wire, while another second tooth has the second chamfer angle in the left area of its wire and the first bevel angle in the right area of your wire. The various symmetrically chamfered unlocked teeth preferably have conjugate chamfering angles - in particular about 45 ° - and have different heights and / or widths.
    [0023] The saw blade is designed as a carbide saw blade with interlocking parts, which are attached to the protrusions of the basic body. These carbide interleaved parts achieve the highest hardness and wear resistance when using the saw blade, compared to fast cutting steel (HSS). The interleaved parts are designed as molded bodies, which are produced as separate elements and then permanently connected to the basic body - in particular by welding or brazing.
    [0024] The saw blade teeth have wires with a wire shape determined in geometric terms (as opposed to wires with a geometrically indeterminate wire shape; see DIN 8580). The saw blade edge preferably consists of carbide, therefore in particular steel forming an alloy with tungsten and / or cobalt. In this case, wolfram is the hard material itself and cobalt - as well as, eventually, other alloying elements - the binder. However, it is also possible to use, for example, high-performance fast cutting steels (HSS).
    [0025] With a view to further increasing hardness and wear resistance, the saw blade may at least be partly provided with a wear protection layer. The wear protection layer extends in this case at least over the end of the wire, the wire having eventually been subjected to a previous rounding, in order to guarantee a better adhesion of the wear protection layer. The wear protection layer mainly leads to greater hardness and, as a result, better resistance against abrasion when sawing, thus increasing the service life of the saw blade. In addition, it is possible to choose that the friction coefficient of the wear protection layer is relatively small, in order to achieve a good output of the chips when sawing and a reduced heating of the saw blade. At the same time, there is a reduction in cutting forces compared to saw blades without a wear protection layer.
    [0026] The wear protection layer may consist of hard material. This can be, in particular, TiN, TiCN, TiAIN, CrN and DLC. The wear protection layer may be composed of one or more layers. In the case of a single layer structure, the wear protection layer mainly consists of TiN, TiCN, TiAIN or CrN. Also several different layers - for example 2, 3 or 4 layers - can form the wear protection layer altogether. In the case of a structure in several layers of this kind, the at least one intermediate layer consists mainly of TiN, TiCN, TiAIN or CrN, and the surface layer disposed on the intermediate layer consists in particular of DLC. The wear protection layer is preferably applied through physical vapor deposition (PVD). This applies in the case of a multilayered structure for both the surface layer and at least one intermediate layer.
    [0027] The teeth can have very different designs in terms of their widths, their chamfering angles and the chamfer length. Thus, for example, at least a part of the teeth - and in particular the so-called conductive tooth - can be designed so as not to be wider than the basic body of the saw blade. This is achieved through, for example, a relatively large bevel angle. Such a tooth will have zero width within the group of teeth.
    [0028] Advantageous improvements of the invention result from the claims, the description and the figures. The advantages mentioned at the beginning of the description of characteristics and combinations of various characteristics are only examples and can act in an alternative or cumulative way, without the advantages having to be necessarily achieved by embodiments according to the invention. Other features can be taken from the figures - in particular the geometries represented and the relative measurements of various components in relation to each other, as well as the respective relative arrangement and actuation connection. The combination of characteristics of different embodiments of the invention or characteristics of different claims is also possible in a way that deviates from the chosen cross-references of the claims and is hereby promoted. This also refers to those characteristics that are represented in separate Figures or that are mentioned in their description. These characteristics can also be combined with characteristics of different claims. Likewise, the features presented in the claims may not exist in the case of other embodiments of the invention.
    [0029] The characteristics mentioned in the claims and in the description must be understood in terms of their number, precisely that number, or there must be a number greater than the number mentioned, without the need to explicitly use the adverbial expression "at least". If in question there is, for example, a thread, it must be understood that there is precisely one thread, two threads or several threads. If, on the other hand, only the precise number of a characteristic must be indicated, the adjective "precise" will be used next to the respective characteristic. BRIEF DESCRIPTION OF THE FIGURES
    [0030] In the following, the invention is explained and described on the basis of preferred Embodiment Examples shown in the Figures. Fig. 1 shows a side view of a section of a first example of an embodiment of the new saw blade in a schematic representation. Fig. 2 shows a top view of the saw blade according to Fig. 1. Fig. 3 shows the saw blade according to Fig. 1 in a front view. Fig. 4 shows enlarged front views of examples of embodiments of the teeth of the new saw blade according to Fig. 1. DESCRIPTION OF THE FIGURES
    [0031] Fig. 1 shows a side view of a first example of embodiment of the new saw blade 1. Fig. 2 shows the corresponding top view of saw blade 1. Other views of saw blade 1 shown in Fig. 1 and 2 or their components are found in Figs. 3 and 4. Figures 4a to 4f show in this case individually the six teeth 10 of the saw blade 1 according to Fig. 3.
    [0032] In the following, reference is made to Fig. 1-4 for descriptive purposes of the saw blade 1.
    [0033] It is understood that Fig. 1 and 2 show only a cut of the saw blade 1, which, in the representation of Fig. 1 and 2, extends both to the left and to the right as well as downwards. In Fig. 1 and 2, the saw blade 1 is designed as a long saw blade, with a medium longitudinal plane 9. The average longitudinal plane 9 is in the middle along the length of the saw blade 1, as can be seen in the overall image of Fig. 2 and 3 (see reference 9, respectively). However, the saw blade 1 can also be a circular saw blade or a less long arc saw blade. The saw blade 1 itself consists of metal and is used for sawing metal.
    [0034] The saw blade 1 has a basic body 2, of which only a cut is visible. The basic body 2 has a plurality of protrusions 3, to which an interleaved part 4 is attached in turn. The interleaved part 4 is composed of a material that is harder than the material of the protrusions 3 and the basic body 2 of the blade saw blade 1. Preferably, the material of the insert 4 is a carbide. Between the projection 3 and the insert 4 there is a junction area 5, to which - inter alia by brazing or welding - the insert 4 with the projection 3 is attached. The saw blade 1 is not shown on the scale 1: 1, but in such a way that the interleaved pieces 4 are very recognizable. The interleaved parts 4 are in fact clearly smaller than the projections 3.
    [0035] The protrusion 3 with the insert 4 forms a tooth 10 with a thread 6 and a chip forming area 7. In addition, each tooth 10 has a rear face of tooth 11, a front side of tooth 12, a bottom of tooth 13 and a free area 14.
    [0036] At least part of the teeth 10 is in a repetitive group along the basic body 2, the group having at least three chamfered teeth 10 not locked. In the upper part of Fig. 3, the special division of the effective wire sections into several teeth 10 is shown in shading, for illustrative purposes, which are in turn assigned to a certain tape-shaped part of the channel. cut and pick up chips only there.
    [0037] As particularly well recognizable in Figs. 3 and 4, the group in the present example has six different teeth C1, C2, C3, C4, C5 and C6. There are different chamfering angles w1, w2, w3, w4 and w5 on the left and on the right, all of which are only shown on the left side in Fig. 3 for easy viewing. However, they also exist on the right side of the Figure - partly in other teeth 10.
    [0038] The first tooth C1 is the tallest and narrowest tooth, the so-called conductive tooth. The first tooth C1 in the group has two chamfers FC11 and FC12, which are under a chamfer angle w5 symmetrically in relation to the median longitudinal plane 9 of the saw blade 1.
    [0039] A second tooth C2 in the group has two chamfers FC21 and FC22, which are asymmetrical in relation to the median longitudinal plane 9 of the saw blade 1, the first chamfer FC21 being found in a first direction 15 from the median longitudinal plane 9 and having a first chamfer angle w2, and the second chamfer FC22 is found in another second direction 16 from the median longitudinal plane 9 and having a second major chamfer angle w4.
    [0040] A third tooth C3 in the group has two chamfers FC31 and FC32, which are asymmetrical in relation to the median longitudinal plane 9 of the saw blade 1, the first chamfer FC31 being found in the first direction 15 from the longitudinal plane 9 and having the first chamfer angle w4, and the second chamfer FC32 is found in the other second direction 16 from the median longitudinal plane 9 and having the second smaller chamfer angle w2.
    [0041] A fourth tooth C4 in the group has two chamfers FC4, and FC42, which are under the chamfer angle w5 symmetrically in relation to the median longitudinal plane 9 of the saw blade 1.
    [0042] A fifth tooth C5 in the group has two chamfers FC51 and FC52, which are asymmetrical in relation to the median longitudinal plane 9 of the saw blade 1, the first chamfer FC51 being found, in the first direction 15 from the median longitudinal plane 9 and having a chamfer angle w3, and the second chamfer FC52 is found in the other second direction 16 from the median longitudinal plane 9 and having a second smaller chamfer angle w1.
    [0043] A sixth tooth C6 in the group has two chamfers FC61 and FC62, which are asymmetrical in relation to the median longitudinal plane 9 of the saw blade 1, the first chamfer FC6 being found, along the first direction 15 from the plane median longitudinal 9 and having the chamfer angle w1, and the second chamfer FC62 is found in the other second direction 16 of the median longitudinal plane 9 and having the second major chamfer angle w3.
    [0044] With a similar arrangement of teeth 10 in this special group technique, with 10 teeth not locked and chamfering angles that are partly asymmetrical, a particularly good cutting performance is achieved, with a good straight path of the saw blade 1, very sharp cuts precise and low burrs and a smooth and clean cut surface, while also achieving a long service life of the saw blade 1 when sawing hollow and molding profiles.
    [0045] In Fig. 3, height differences h1, h2 and h3 between teeth 10 are also shown.
    [0046] In the preferred embodiment shown, the following values are thus gathered:
    [0047] As shown in Fig. 3, in this preferred example the group consists of the sequence of teeth C1-C2-C3-C4-C5-C6. This group is repeated in the remainder of the saw blade 1, and it is also possible to insert other teeth 10 and / or vary the arrangement of the group. Other examples of possibilities for an arrangement are the C1-C5-C6-C4-C2-C3, C1-C6-C5-C4-C2-C3, C1-C6-C5-C4-C3-C2 and C1- tooth sequences C5-C6-C4-C3-C2. REFERENCE LIST
    [0048] 1 Saw blade 2 Basic body 3 Overhang 4 Interleaved part 5 Joint area 6 Wire 7 Chip forming surface 8 Machining element with chips 9 Middle longitudinal plane 10 Tooth 11 Posterior face of the tooth 12 Front side of the tooth 13 Bottom of the tooth 14 Free area 15 First direction 16 Second direction C1 First tooth C2 Second tooth C3 Third tooth C4 Fourth tooth C5 Fifth tooth C6 Sixth tooth FC1, First chamfer of the first tooth FC12 Second chamfer of first tooth FC2, First chamfer of the second tooth FC22 Second chamfer of second tooth FC3, First chamfer of the third tooth FC32 Second chamfer of third tooth FC4, First chamfer of the fourth tooth FC42 Second chamfer of fourth tooth FC51 first chamfer of fifth tooth FC52 second chamfer of fifth tooth FC61 first chamfer of the sixth tooth FC62 second chamfer of the sixth tooth W1 first chamfer angle W2 second chamfer angle W3 third chamfer angle W4 fourth chamfer angle W5 fifth chamfer angle
    权利要求:
    Claims (12)
    [0001]
    Saw blade (1) for sawing hollow and / or molding profiles, with a basic body (2) and a plurality of teeth (10) adjacent to the basic body (2) with a wire (6), respectively, characterized by the teeth (10) are formed by means of projections (3) of the basic body (2), to which an interleaved piece (4) of a material, respectively, is harder than the material of the projections (3) and of the basic body (2), at least a part of the teeth (10) is arranged in a repetitive group along the basic body (2) of at least three unblocked chamfered teeth (10), a first tooth (10) has two chamfers in the group, the chamfers running symmetrically towards the median longitudinal plane (9) of the saw blade (1), a second tooth (10) has two chamfers in the group, which run asymmetrically towards the median longitudinal plane (9) of the saw blade (1), the first chamfer extending in a first direction (15) from the longitudinal plane medium (9) and has a first chamfer angle and the second chamfer extends in another second direction (16) of the median longitudinal plane (9) and has a second larger chamfer angle, a third tooth (10) has two chamfers in the group, which run asymmetrically towards the median longitudinal plane (9) of the saw blade (1), the first chamfer extending in a first direction (15) from the longitudinal plane medium (9) and has a first chamfer angle and the second chamfer extends in another second direction (16) of the median longitudinal plane (9) and has a smaller second chamfer angle, the first chamfer of the second tooth (10) and the first chamfer of the third tooth (10) in the front view of the saw blade (1) end at a common point on the outside, and the second chamfer of the second tooth (10) and the second chamfer of the third tooth (10) in the front view of the saw blade (1) ends at a common point on the outside.
    [0002]
    Saw blade (1) according to claim 1, characterized in that the first chamfer angle of the second tooth (10) varies between 5o and 25o, the second chamfer angle of the second tooth (10) varies between 20o and 50o, the the first chamfer angle of the third tooth (10) varies between 20o and 50o and the second chamfer angle of the third tooth (10) varies between 5o and 25o.
    [0003]
    Saw blade (1) according to claim 1 or 2, characterized in that the first tooth (10) has a chamfering angle, which varies between 20o and 60o, particularly about 45o.
    [0004]
    Saw blade (1) according to claim 1, characterized in that the first tooth (10) has a first height, the second tooth (10) a second height and the third tooth (10) a third height, the first being height is greater than the second and third height.
    [0005]
    Saw blade (1) according to claim 4, characterized in that the first height is between 0.02 mm to 0.2 mm, particularly approximately 0.03 mm greater than the second and third height.
    [0006]
    Saw blade (1) according to claim 4, characterized in that the second and third height are the same.
    [0007]
    Saw blade (1) according to any one of the preceding claims, characterized in that the group also has a fourth unlocked chamfered tooth (10), which has two chamfers, the chamfers running symmetrically towards the longitudinal plane middle (9) of the saw blade (1).
    [0008]
    Saw blade (1) according to claim 7, characterized in that the first tooth (10) has a first height, the second tooth (10) a second height, the third tooth (10) a third height and the fourth tooth ( 10) a fourth height, the first height being greater than the second and third height and the fourth height being less than the first, second and third height.
    [0009]
    Saw blade (1) according to claim 7 or 8, characterized in that the group also has the following teeth (10) chamfered unlocked: a fifth tooth (10), which has two chamfers, which run asymmetrically towards the median longitudinal plane (9) of the saw blade (1), the first chamfer extending in a first direction (15) from the longitudinal plane medium (9) and has a first chamfer angle and the second chamfer extends in another second direction (16) of the median longitudinal plane (9) and has a smaller second chamfer angle, and it has a sixth tooth (10) of the second chamfer, which run asymmetrically towards the median longitudinal plane (9) of the saw blade (1), with the first chamfer extending in the first direction (15) of the median longitudinal plane ( 9) and has a first chamfer angle and the second chamfer extends in the second other direction (16) from the median longitudinal plane (9) and has a second larger chamfer angle.
    [0010]
    Saw blade (1) according to claim 9, characterized by the first chamfer angle of the fifth tooth (10) varies between 15o and 30o, the second chamfer angle of the fifth tooth (10) varies between 5o and 15o, the first chamfer angle of the sixth tooth (10) varies between 5o and 15o, the second chamfer angle of the sixth tooth (10) varies between 15o and 30o.
    [0011]
    Saw blade (1) according to any one of the preceding claims, characterized in that the threads (6) of the teeth (10) have a cutting edge respectively and the threads (6) are provided with a wear protection layer that extends over the respective cutting edges.
    [0012]
    Saw blade (1) according to claim 11, characterized in that the wear protection layer contains hard material, particularly TiN, TiCN, TiAIN, CrN or DLC.
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    同族专利:
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    DE102011050168A1|2012-11-08|
    HRP20161086T1|2016-10-21|
    HUE029875T2|2017-04-28|
    RU2012118398A|2013-11-10|
    CN102773559A|2012-11-14|
    DE102011050168B4|2014-12-31|
    ES2588401T3|2016-11-02|
    RU2580260C2|2016-04-10|
    PT2520389T|2016-09-01|
    BR102012010626A2|2013-06-18|
    DK2520389T3|2016-09-12|
    EP2520389B1|2016-06-01|
    US20120279372A1|2012-11-08|
    PL2520389T3|2016-12-30|
    SI2520389T1|2016-10-28|
    US9162299B2|2015-10-20|
    CN102773559B|2017-07-28|
    JP2012232409A|2012-11-29|
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    DE2842514C2|1978-09-29|1980-06-19|Gerd 5630 Remscheid Hoeptner|Saw blade for cutting wood and other materials|
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    法律状态:
    2013-06-18| B03A| Publication of an application: publication of a patent application or of a certificate of addition of invention|
    2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-12-10| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-12-08| B09A| Decision: intention to grant|
    2021-02-17| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 04/05/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    DE201110050168|DE102011050168B4|2011-05-06|2011-05-06|Saw blade for sawing hollow and shaped profiles|
    DE102011050168.1|2011-05-06|
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