• 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 blades (SB) with flat parallel side surfaces (SA), for sawing preferably wood, comprising groups of scraper teeth (3, 4) and groups of tear teeth (1, 2) and between the teeth tooth gaps with bottoms (8), the scraper teeth (3, 4) are curtailed to form right-angled scraper teeth (3) and partly to form left-violated scraper teeth (4), and that the scraper teeth (3, 4) have bevelled front edges and trailing edges and to each of the scraper teeth (3, 4) has a top surface (6), the tearing teeth (1, 2) having sharp points (20, 108) which lie partly to the right and partly to the left in the saw blade (SB), each bent scraping tooth (3, 4) being provided with a flat side surface (11, 12) which is substantially parallel to the flat side surface (SA) of the saw blade (SB). (Fig. 3)
    公开号:SE1551180A1
    申请号:SE1551180
    申请日:2015-09-15
    公开日:2017-03-16
    发明作者:Ivner Tomas
    申请人:Kapman Ab；
    IPC主号:
    专利说明:

    Technical field The present invention relates to saw blades for combined cutting and splitting sawing of preferably wood, but also for sawing in other materials such as plastic, gypsum, styrofoam and more. These types of saw blades are provided partly with serrated scraper teeth with bevelled edges and a top surface and partly with unrestricted rake teeth with bevelled edges and a sharp tip.
    Background of the invention Traditionally, saw blades, for example for hand saws, for splitting saws of wood in the direction of the fibers have been provided with scraper teeth which have transverse edges approximately perpendicular to the saw blade surface, at least before cutting, while saw blades for sawing wood perpendicular to the fibers single-sided filed or ground phases on the front and back edges of the teeth get sharp tips that, like knife wipes, can cut off the fibers.
    In mixed use, when sawing wood with fiber direction varying through large twigs and when sawing board material such as plywood, both of these saw blades have poor efficiency. Scraper teeth can not cut off the fibers when sawing, but wears them off, which requires greater force and gives an uneven surface. Rake teeth plow wide-splitting saws between the fibers without loosening them, and cannot transport long rolled shavings out of the saw cut.
    Attempts have therefore been made early on to design saw blades for mixed saw use with alternating scraper teeth and rake teeth, as is apparent from, for example, U.S. Pat. Nos. The scraper teeth are unrestricted and serve to transport the chips and for split sawing also to cut the fibers. The rake teeth are slightly higher than the scraper teeth to ensure that the fibers are cut off before sawing off the scraper teeth when sawing.
    It is also known that from patent DE 805,938 to make saw blades with serrated scraper teeth, and rake teeth which are partly serrated and beveled in the usual way, partly unrestricted and symmetrically double-sided beveled, whereby the chip size is reduced. 2 Other constructions that have been tried are to have only equally high rake teeth, in order to vary the cutting so that the tips of the teeth lie in four rows according to patent US 4,784,034, whereby the chips become so small even when splitting when they are cut out of the incision.
    An intermediate shape between scraper teeth and tear teeth in the form of bevelled teeth with a strongly laterally sloping top surface is known from the patent document JP 56-089202 (SE ans 8203647-6), where it is also shown that by cutting some of the uniform teeth one can get the tips in four rows , where by the angular change at the contraction the tips of the serrated teeth will be at a lower level than the tips of the serrated teeth. However, this type of saw is not very effective when sawing in end wood.
    Experience shows that saw blades for mixed use should include rake teeth to function satisfactorily when sawing. Grinding teeth that are bent so that they form the sides of the saw cut are, however, strongly exposed to damage when sawing counter nails or other hard objects. A saw blade with damaged rake teeth has difficulty sawing straight, as you are dependent on the symmetry of the forces and each bent rake tooth is self-feeding sideways.
    The Swedish patent document SE 467489 further discloses a saw blade intended for mixed sawing of wood, preferably intended for hand saws, which are less exposed to damage to the teeth and which saw straight even in uneven and prickly wood. This saw blade is provided along its edge with teeth and between these tooth gaps. All teeth have bevelled front and rear edges. The leading edges are steeper than the trailing edges. Some teeth are unrestricted tear teeth, bevelled so that the tips lie alternately on the right side and on the left side of the saw blade. The other teeth are curved scraper teeth that are bevelled but have no sharp tip but a top surface that slopes slightly backwards. The top surface is triangular in shape. Between two scraper teeth there is an even number of tear teeth which in the document are two in number.
    Saw blades of this design are generally excellent for sawing mixed timber where the fiber directions can vary from being perpendicular to the sawing direction to being parallel to the sawing direction and angles therebetween.
    In some cases, however, these saw blades, especially with hand saws, may tend to drift away from the intended sawing direction. In addition, the cut surface becomes relatively rough and the blade feels sluggish when started and that it can also have a vibrating ride.
    Object of the invention The object of the present invention is to provide a saw blade, for example for combined cutting and splitting sawing of wood, which further improves the sawability by the saw blade driving straighter, giving finer cutting surfaces and being more easily started and having softer threads than previously known saw blades.
    Summary of the Invention By the present invention as set forth in the independent patent claim, the above stated objects are fulfilled in which said disadvantages of existing saw blades have been minimized or eliminated. Suitable embodiments of the invention are set out in the dependent claims.
    The invention is directed to a saw blade with tear teeth and curved scraper teeth which have been provided with a side ground surface.
    These objects are achieved partly by the ground surface providing an additional abutment surface in the side of the saw bar together with abutment surfaces on the rake teeth, and partly by the edge above the cutting tip of the scraper teeth after grinding said surface lying in a plane parallel to the blade extension. and thus helps the entire edge to polish the cut surface of the workpiece. This polishing function is also obtained in the pulling direction when the saw blade is applied to a hand saw, especially since the edges of the scraper teeth all lie in the same plane.
    The new design with the ground surfaces on the scraper teeth gives, through friction between the ground surface and the workpiece, a slight inertia in pull and sliding direction when sawing with a hand saw, which inertia dampens vibrations and gives a more even feeling in the hand.
    It is also technically easier to pour a higher precision in a grinding operation than in cutting, which enables a better precision in the positioning of the tooth tips on the scraper teeth. Better precision means that the teeth work to a greater degree in the same bar as the front teeth, which in every way provides better properties.
    Tooth tips which in their position deviate from the main tooth tip line, i.e. the imaginary line connecting the tips of all similar teeth on a saw blade, will perform a different job than the other tips in the line and therefore give rise to other forces which are perceived as uneven bunch and in 4 worst cases hopelessness when using. Individual tooth tips which in their position lie further from the lateral plane of the saw body than the main tooth tip line cause a coarser cutting surface and contribute to the saws being able to drive or steer obliquely in use. This inconvenience occurs with the previously known saw blades for combined sawing, but will be considerably improved with the stated grinding operation for producing said flat ground side surfaces.
    The invention relates to a saw blade with flat parallel side surfaces, for sawing preferably wood, comprising groups of scraper teeth and groups of tear teeth. Between the teeth there are tooth gaps with bottoms. The scraper teeth are bent to form right-handed scraper teeth and partly to form left-handed scraper teeth. The scraper teeth have bevelled front edges and trailing edges and each of the scraper teeth has a top surface while the rake teeth have sharp points that lie partly to the right and partly to the left in the saw blade. Specifically with the invention is that a number of scratched teeth is provided with a flat side surface which is substantially parallel to the flat side surface of the saw blade. Depending on the manufacturing process, the flat side surface may deviate from the flat side surface of the saw blade by 0.5-6.0 °, which interval corresponds to the expression "substantially parallel". Every scraper does not need to be fitted with this flat side surface. For example, every other scraper tooth on each side of the blade may be provided with this flat side surface. Depending on the application of the invention, a suitable tooth pattern for teeth with these flat side surfaces can be determined.
    According to an embodiment of the invention, each inclined scraper tooth is provided with a flat side surface which is substantially parallel to the flat side surface of the saw blade. In this embodiment, all scraper teeth are thus provided with such a flat side surface.
    According to an embodiment of the invention, the tips of the rake teeth are located in two planes which are parallel to the flat side surface of the saw blade, the flat side surfaces of the scraper teeth lying outside the respective planes in which the tips of the rake teeth are located.
    According to an embodiment of the invention, the flat side surface is laterally offset to lie outside the flat side surface of the saw blade.
    According to an embodiment of the invention, the scraper tooth that follows a right-handed canine consists of a left-handed canine and the scraper tooth that follows a left-handed canine consists of a right-handed canine. According to an embodiment of the invention, the tear teeth have bevelled front edges and rear edges.
    According to an embodiment of the invention, the tips of the rake teeth lie on the same plane as the flat side surfaces of the saw blade.
    According to one embodiment of the invention, at least one group of tear teeth is unrestricted.
    According to an embodiment of the invention, at least a second group of tear-off teeth is restricted.
    According to an embodiment of the invention, the tear teeth are higher than the scraper teeth even before the scraping of the scraper teeth.
    According to an embodiment of the invention, an imaginary line connecting the tips of all identical teeth on the saw blade forms a straight line, for example pre-application of the invention in a hand saw or one in a band saw.
    According to an embodiment of the invention, an imaginary line connecting the tips of all identical teeth on the saw blade forms a curve line with constant curvature, for example for applying the invention in a circular saw.
    According to an embodiment of the invention, the side curvature of the saw blade is less than its thickness. According to an embodiment of the invention, an even number of tear teeth, preferably two or four, lies between two adjacent scraper teeth. This embodiment is shown in Figures 1, 4 and 7 which show the tooth pattern OOROOL, where 0 scar tooth and R and L are right- and left-handed scraping teeth, respectively.
    According to an embodiment of the invention, the top surface of the scraper teeth has a trailing edge which is parallel to the bottom of the tooth opening behind.
    According to an embodiment of the invention, the top surface of the scraper teeth has a leading edge which lies at a greater height from the bottom of the tooth cover than the rear edge does.
    According to an embodiment of the invention, at least one group of tear teeth is provided with a top surface. This group of rake teeth can refer to all rake teeth on the saw blade.
    According to an embodiment of the invention, a second group of tear teeth lacks a top surface while a first group of tear teeth is provided with a top surface.
    According to an embodiment of the invention, each tooth is provided with a top surface. According to an embodiment of the invention, the size of the top surface of the tooth teeth 6 differs from the size of the top surface of the scraper teeth.
    According to embodiments of the invention, the teeth of the saw blade have cyclically repeating tooth patterns which contain one or more tear teeth, one or more right-angled scraper teeth and one or more left-handed scraping teeth. only in the opposite position in relation to each right-angled scraper tooth. If each right-angled canine is only in an even position, then each left-cany canine is in an odd position and vice versa.
    According to embodiments of the invention, each tooth pattern has an even number of teeth.
    According to embodiments of the invention, each tooth pattern has an even number of tear teeth.
    According to embodiments of the invention, each tooth pattern has an odd number of teeth.
    According to embodiments of the invention, each tooth pattern has an odd number of tear teeth.
    According to embodiments of the invention, a partial number or all of the saw teeth of the saw blade are inclined outwards from or inwards towards the intended center line of the saw blade.
    According to embodiments of the invention, a partial number or all of the tear teeth in the saw blade are provided with a ground top surface.
    As indicated above and shown in the embodiments shown below in the figures, the tooth pattern has been shown according to the tooth sequence OOROOL, where 0 is the tear tooth and Roch L is the right- and left-handed canine. Within the scope of the invention, other tooth patterns are conceivable, for example with the tooth sequences ORLOLR, OOOORL, OORLROOLRL, OORL, OORLROOLRL. These tooth patterns have an even number of teeth in the group in which all right-aligned teeth lie either only on even positions or only on odd positions in the tooth sequence. Dental patterns that require alternative manufacturing methods such as, for example, ORL, ORLRL and OOORL are also conceivable within the scope of the invention. In addition, tear teeth can be left-tilted "l" and right-tilted "r" inwards or outwards, which gives further embodiments. Combinations of these teeth are also conceivable within the scope of the invention. Furthermore, all or groups of tear teeth can also be provided with a top surface, which in combination with indicated tear teeth, restricted or unrestricted, and various forms of tooth patterns provide further embodiments within the scope of the invention.
    Brief description of the drawings The invention will now be described in more detail with references in connection with the accompanying drawing figures. The drawing figures show only principle sketches intended to facilitate the understanding of the invention.
    Figure 1 shows in side view a part of a saw blade according to a first embodiment of the invention.
    Figure 2 shows a top view of the saw blade according to figure 1.
    Figure 3 shows a sectional view A-A according to figure 1.
    Figure 4 shows in side view a part of a saw blade according to a second embodiment of the invention.
    Figure 5 shows a top view of the saw blade according to figure 4.
    Figure 6 shows a sectional view B-B according to Figure 4.
    Figure 7 shows in side view a part of a saw blade according to a third embodiment of the invention.
    Figure 8 shows a top view of the saw blade according to figure 7.
    Figure 9 shows a sectional view C-C according to Figure 7.
    Figure 10 shows an alternative design of a tear tooth according to the invention.
    Description of the invention Figure 1 shows part of a saw blade SB with parallel side surfaces SA and with the felling direction CD indicated. The saw blade is provided with a toothing containing two groups of teeth, the first group consisting of tear teeth 1, 2 with sharp points which are intended for cutting workpieces substantially perpendicular to the fiber direction. These rake teeth 1, 2 are bevelled so that the tips lie alternately on the right side of the saw blade, right-pointed teeth 1 and on the left side of the saw blade, left-pointed teeth 2. The second group of teeth are cut-off scraper teeth 3, 4 which are intended for splitting workpieces substantially parallel to the fiber direction. Of these scraper teeth, some are right-handed scraper teeth 3 and the rest are left-handed scraper teeth 4. The scraper teeth 3, 4 are bevelled but these do not have a sharp tip like the rake teeth but instead have a top surface 6 which slopes slightly backwards in relation to the felling direction CD. The top surface 6 is square in shape with two parallel sides or triangular. The figures show triangular top surfaces throughout. Each scraper tooth 3, 4 is further provided with a flat side surface 11, 12 which is substantially parallel to the flat side surfaces SA of the saw blade SB. These flat side surfaces 11, 12 lie outside the side surfaces SA of the saw blade, which is shown in figure 2.
    The scraper teeth according to the embodiment in Figure 1 for a hand saw are also provided with front edges 9, 10, upper edges 13, 14 and rear edges 15, 16 which all lie in the same plane. All these edges help to polish the cut surface in both the felling direction and the pulling direction. Figure 1 shows that the saw blade has an embodiment of a cyclically repeating tooth pattern TP in the felling direction CD according to OOROOL.
    Figure 2 shows the saw blade SB with its flat side surfaces SA from above with the tips 20 of the rake teeth and the scraper teeth 3, 4 with their respective top surfaces 6. The rear edges 5 of the top surfaces 6 are parallel to the bottom 8 of the tooth cover and these rear edges 5 are normally in a horizontal plane SB held vertically with horizontal tooth edge. The leading edges 7 of the top surfaces 6 lie at a greater height above the bottom 8 of the tooth gaps than the rear edges 5 do. The leading edge 7 of a scraper tooth 3, 4 functions as a transverse edge for transporting chips from the saw cut. Because the side cut 21 is smaller than the thickness 22 of the saw blade, only a small part of the leading edge 7 of the scraper tooth will widen the saw cut, while the entire leading edge 7 helps to clear out chips from the cut when moving forward. The bevelled front side 23 of the scraper tooth 3, 4 smooths out the sides of the cut.
    Figure 2 also shows the edges of the scraper teeth 3, 4 where the front edges 9, 10, the upper edges 13, 14 and rear edges 15, 16 lie in the same plane which is parallel to the flat side surface SA of the saw blade SB and coincides with the flat side surfaces 11, 12 of the scraper teeth 3, 4.
    Between two scraper teeth 3, 4 there is an even number of tear teeth 1, 2, preferably two or four. According to the embodiment shown in Figure 1, these two are the number. This gives the advantage that the saw can be formed by only two grinding operations, whereby in the first operation every other tooth gap is ground to full depth, and in the second operation the other tooth gaps. The top surfaces 6 of the scraper teeth 3, 4 can be ground in the same operation as the tooth gaps behind. Because the scraper teeth 3, 4 apart from the top surfaces 6 are the same as the rake teeth 1, 2, it is ensured that the scraper teeth 3, 4 have a smaller height than the rake teeth 1, 2 already before the cut, and that on the finished saw blade the difference in height is greater than the difference only would have been due to the violation.
    Figure 3 shows in a section A-A the orientation of the teeth 1, 2, 3, 4 along the saw blade SB and in relation to the two parallel side surfaces SA of the saw blade. Each scraper tooth 3,4 has been provided by grinding with a flat side surface 11, 12 which respective side surface is parallel to the side surfaces SA of the saw blade SB. The scraper teeth 3, 4 are each provided with a top surface 6 and a bevelled front side 23. In this embodiment the tips of the tear teeth 1, 2 are ground so that a group of tips are located on the right and a group of tips are located on the left. Common to this embodiment shown is that all of the tips of the tear teeth alternately lie in the same plane both side surfaces SA of the saw blade SB. The flat side surfaces 11, 12 of the scraper teeth 3, 4, on the other hand, lie in parallel planes outside the side surfaces SA of the saw blade SB. However, the tooth pattern of the deal-tearing tear teeth can vary between different embodiments within the scope of the invention, despite the fact that the tips of the tear teeth lie in the same plane as the two side surfaces SA of the saw blade SB.
    Figure 4 shows in a side view a second embodiment of the invention with a saw blade SB with parallel saw surfaces SA with the felling direction CD shown. In this side view, the blade is identical to the saw blade according to the first embodiment. The saw blade is formed with a first group of teeth where some are right-pointed tine teeth 41 and some are left-pointed tine teeth 42. A second group of teeth is constituted by curved scraper teeth 43, 44 which are as above intended intended splitting of workpieces substantially parallel to the fiber direction. Of these scraper teeth, some are right-handed scraper teeth 43 and the rest are left-handed scraper teeth 44.
    The scraper teeth 43, 44 are bevelled but these do not have a sharp tip like the rake teeth but instead have a top surface in a corresponding manner as shown in the first embodiment. The top surface is square in shape with two parallel sides or triangular. The figures show continuous triangular top surfaces. Each scraper tooth 43, 44 is further provided with a flat side surface 211, 212 which is substantially parallel to the flat side surfaces SA of the saw blade SB. These flat side surfaces 211,212 lie outside the side surfaces SA of the saw blade as shown in Figure 5.
    Figure 5 shows the saw blade SB with its flat side surfaces SA from above and with the rake teeth 41, 42 inclined towards the imaginary center line 45 of the saw blade. The rake teeth are provided with tips 61, 62 which in this embodiment are closer to the intended center line 45 of the saw blade. the first embodiment. The scraper teeth 43, 44 are provided with flat side surfaces 211, 212 and corresponding top surfaces as shown in Figure 2. The edges of the scraper teeth are designed in the same way and have the same function as indicated in Figure 2.
    Figure 6 shows in a section B-B the saw blade SB with its two side surfaces SA and with the orientation of the teeth 41, 42, 43, 44 along the saw blade SB and in relation to the two parallel side surfaces SA of the saw blade. Each scraper tooth 43, 44 has been provided by grinding with a flat side surface 211, 212 which respective side surface is parallel to the side surfaces SA of the saw blade SB. Also in this embodiment the tips of the tear teeth 41, 42 are ground so that a group of tips are located to the right and a group of tips are located to the left, but in that the tear teeth in this embodiment are inclined inwards, an imaginary line connecting the right tips 61 is closer to an imaginary line. which connects the left tips 62 to each other than what is shown in the first embodiment in Figure 3. The flat side surfaces 211, 212 of the scraper teeth 43, 44, on the other hand, lie in parallel planes outside the side surfaces SA of the saw blade SB.
    Figure 7 shows in a side view a third embodiment of the invention with a saw blade SB with parallel saw surfaces SA with the felling direction CD shown. In this side view, the blade is identical to the saw blade according to the first and the second embodiment. The saw blade is formed with a first group of teeth where some are right-pointed rake teeth 71 and some are left-pointed rake teeth 72. A second group of teeth consists of serrated scraper teeth 73, 74 which are as indicated above intended for splitting workpieces substantially parallel to fiber direction-a. Of these scraper teeth, some are right-handed scraper teeth 73 and the rest are left-handed scraper teeth 74.
    The scraper teeth 73, 74 are bevelled but these do not have a sharp tip such as the tear teeth but instead have a top surface in a corresponding manner as shown in the first and the second embodiment. The top surface is square in shape with two parallel sides or triangular. The figures show triangular top surfaces throughout. Each scraper tooth 73, 74 is further provided with a flat side surface 311, 312 which is substantially parallel to the flat side surfaces SA of the saw blade SB. These planar side surfaces 311, 312 lie outside the side surfaces SA of the saw blade, as shown in figure 8.
    Figure 8 shows the saw blade SB with its flat side surfaces SA from above and with the rake teeth 71, 72 inclined out from the imaginary center line 45 of the saw blade. The rake teeth 11 are provided with tips 91, 92 which in this embodiment are further from the imaginary center line 45 of the saw blade. shown in the first and second embodiments. The scraper teeth 73, 74 are provided with flat side surfaces 311, 312 and corresponding top surfaces as shown in figure 2. The edges of the scraper teeth are designed in a similar manner and have the same function as indicated in figure 2.
    Figure 9 shows in a section C-C the saw blade SB with its two side surfaces SA and with the orientation of the teeth 71, 72, 73, 74 along the saw blade SB and in relation to the two parallel side surfaces SA of the saw blade. Each scraper tooth 73, 74 has been provided by grinding with a flat side surface 311, 312 which respective side surface is parallel to the side surfaces SA of the saw blade SB. Also in this embodiment, the tips of the tear teeth 71, 72 are ground so that a group of tips are located to the right and a group of tips are located to the left, but because the tear teeth in this embodiment are inclined outwards, an imaginary line connecting the right tips 91 is further away from an imaginary line connecting the left tips 92 to each other than that shown in the previous embodiments. The flat side surfaces 311, 312 of the scraper teeth 73, 74, on the other hand, lie in parallel planes outside the side surfaces SA of the saw blade SB.
    Common to the embodiments of the saw blade shown is that the scraper teeth are partly bent outwards and partly that their respective flat side surfaces lie outside the side position of the tips of the rake teeth.
    Figure 10 shows an alternative design of a tear tooth 101 within the scope of the pre-invention. This tear tooth 101 is provided with a ground top surface 106 similar to the top surfaces of the tear teeth. Through this top surface 106, the tear tooth also obtains a leading edge 110 which can clear buckles from the cut when moving forward and a trailing edge 111 and an upper edge 114. Its tip 108 is located in a saw blade in the corresponding position laterally as shown in the embodiments described above. A tear tooth 101 according to this design can in a saw blade be combined with the tear teeth shown above according to a selected tooth pattern. Thus, within the scope of the invention, the rake teeth can also be curtailed so that their tips lie alternately to the left and alternately to the right of the saw blade. Also in such embodiments the tips lie inside said ground surfaces of the rake teeth. In addition, such tear teeth can be combined or consist of tear teeth with a top surface according to Figure 10.
    权利要求:
    Claims (27)
    [1]
    Saw blades (SB) with flat parallel side surfaces (SA), for sawing preferably wood, comprising groups of scraper teeth (3, 4) and groups of tear teeth (1,2) and between the teeth tooth gaps with bottoms (8), wherein the scraper teeth (3, 4) are curved to form right-curved scraper teeth (3) and partly to form left-curved scraper teeth (4), and that the scraper teeth (3, 4) have bevelled front edges and rear edges and to each of the scraper teeth (3, 4) is provided with a top surface (6), the rake teeth (1,2) having sharp points (20, 61, 62, 91, 92, 108) which lie partly to the right and partly to the left in the saw blade (SB), characterized by a number of inclined scraper teeth (3, 4) are provided with a flat side surface (11, 12) which is substantially parallel to the flat side surface (SA) of the saw blade (SB).
    [2]
    Saw blade according to claim 1, characterized in that each serrated scraper tooth (3, 4) is provided with a flat side surface (11, 12) which is substantially parallel to the flat side surface (SA) of the saw blade (SB).
    [3]
    Saw blade according to one of Claims 1 to 2, characterized in that the tips (20, 61, 62, 91, 92, 108) of the tear teeth (1, 2) are located in two planes which are parallel to the flat side surface of the saw blade (SB). (SA) wherein the flat side surfaces (11, 12) of the scraper teeth (3, 4) lie outside the respective planes in which the tips (20, 61, 62, 91, 92, 108) of the tear teeth (1, 2) are located.
    [4]
    Saw blade according to one of Claims 1 to 3, characterized in that the planar side surface (11, 12) is laterally offset to lie outside the flat side surface (SA) of the saw blade (SB).
    [5]
    Saw blade according to any one of claims 1-4, characterized in that the scraper tooth following a right-handed scraper tooth (3) consists of a left-handed scraper tooth (4) and that the scraper tooth following a left-handed scraper tooth (4) consists of a right-handed scraper tooth (3).
    [6]
    Saw blade according to one of Claims 1 to 5, characterized in that the rake teeth (1, 2) have bevelled front edges and trailing edges. 13
    [7]
    Saw blade according to one of Claims 1 to 6, characterized in that the tips (20) of the rake teeth (1, 2) lie in the same plane as the flat side surfaces (SA) of the saw blade (SB).
    [8]
    Saw blade according to one of Claims 1 to 7, characterized in that at least one group of tear teeth (1,2) are unrestricted.
    [9]
    Saw blade according to one of Claims 1 to 8, characterized in that at least a second group of tear teeth (41, 42; 71, 72) are curved.
    [10]
    The teeth (1, 2) are higher than the scraper teeth (3, 4) even before the saw blades of the scraper teeth (3,4) according to any one of claims 1-9, characterized in that tear-tooth curvature.
    [11]
    Saw blade according to one of Claims 1 to 10, characterized in that a line of thought connecting the tips of all identical teeth on the saw blade (SB) forms a straight line, for example for a hand saw or a band saw.
    [12]
    Line connecting the tips of all identical teeth on the saw blade (SB) car - Saw blade according to any one of claims 1-10, characterized in that an imaginary curve line with constant curvature, for example for a circular saw.
    [13]
    The side cut (21) of its (SB) is smaller than its thickness (22). Saw blade according to any one of claims 1-12, characterized in that the saw blade
    [14]
    Two adjacent scraper teeth (3, 4) have an even number of tear teeth (1, 2), preferably a saw blade according to any one of claims 1-13, characterized in that between two or four.
    [15]
    The top surface (6) of the teeth (3, 4) has a trailing edge (5) which is parallel to the
    [16]
    Saw blade according to one of Claims 1 to 14, characterized in that the bottom (8) of the scraping tooth is closed. Saw blade according to one of Claims 1 to 15, characterized in that the top surface (6) of the scraper teeth (3, 4) has a leading edge (7) which lies at a greater height from the bottom (8) of the tooth cover than the trailing edge (5) does. .
    [17]
    At least one group of tear teeth (101) is provided with a top surface (106). Saw blades according to one of Claims 1 to 16, characterized in that
    [18]
    18. tear teeth (1, 2) lack a top surface. Saw blades according to claim 17, characterized in that a second group of
    [19]
    19. provided with a top surface (106). Saw blade according to claim 17, characterized in that each ratchet tooth (101) is
    [20]
    Saw blade according to one of Claims 17 to 19, characterized in that the size of the top surface (106) of the rake teeth deviates from the size of the top surface (6) of the scraper teeth.
    [21]
    Saw blade according to one of Claims 1 to 20, characterized in that the teeth of the saw blade (SB) have a cyclically repeating tooth pattern (TP) which contains one or more tear teeth (1, 2; 41, 42; 71, 72; 101), a or more right-winged canine teeth (3, 43, 73) and one or more left-handed canine teeth (4, 44, 74), each right-handed canine only lying in an even or odd position in the tooth pattern (TP) and each left-handed canine only lying on an opposite tooth. set position in relation to each right-handed canine.
    [22]
    Saw blade according to claim 21, characterized in that each tooth pattern (TP) has an even number of teeth (1, 2, 3, 4).
    [23]
    Saw blade according to one of Claims 21 to 22, characterized in that each tooth pattern (TP) has an even number of tear teeth (1, 2).
    [24]
    Saw blade according to claim 21, characterized in that each tooth pattern (TP) has an odd number of teeth.
    [25]
    Saw blade according to one of Claims 21 or 24, characterized in that each tooth pattern (TP) has an odd number of tear teeth.
    [26]
    Saw blade according to one of Claims 1 to 25, characterized in that a part or all of the rake teeth (41, 42; 71, 72) of the saw blade are inclined outwards from or inwards towards the intended center line (45) of the saw blade (SB).
    [27]
    Saw blade according to one of Claims 1 to 26, characterized in that a part or all of the rake teeth (101) in the saw blade are provided with a ground top surface (106).
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    同族专利:
    公开号 | 公开日
    SE539400C2|2017-09-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    申请号 | 申请日 | 专利标题
    SE1551180A|SE539400C2|2015-09-15|2015-09-15|Saw blades with flat parallel side surfaces on the scraper teeth|SE1551180A| SE539400C2|2015-09-15|2015-09-15|Saw blades with flat parallel side surfaces on the scraper teeth|
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