SAW BLADE HAVING A SMALL SAW TOOTH

Abstract

A saw tooth for a saw blade that is attached in a longitudinal direction thereof on the saw blade body to extend away, at least in part, from the saw blade body. The saw tooth is formed with a cutting-face part having a cutting face, a height of which extends in the longitudinal direction and a width of which extends perpendicularly to the longitudinal direction. The width of the cutting face is greater than a height of the cutting face.

Claims

1. A saw tooth for a saw blade configured for attachment to a saw blade body in a receptacle of the saw tooth body, such that when the saw tooth is attached, the saw tooth extends away, at least in part, from the saw blade body, the saw tooth comprising: a cutting-face part having a cutting-face part having a cutting face with a height (H.sub.S, H.sub.S, H.sub.S) extending in the longitudinal direction and a width (B.sub.S, B.sub.S, B.sub.S) extending perpendicularly to the longitudinal direction; wherein the width (B.sub.S, B.sub.S, B.sub.S) of the cutting face is greater than the height (H.sub.S, H.sub.S, H.sub.S) of the cutting face; and wherein a thickness of the cutting face part is less than a depth of the saw tooth receptacle in a cutting direction of the saw blade, upon attachment of the saw tooth to the saw blade body.

2. The saw tooth according to claim 1, further comprising an attachment projection, which extends away from the cutting face in the longitudinal direction.

3. The saw tooth according to claim 2, wherein the attachment projection is larger in the longitudinal direction than the height (H.sub.S, H.sub.S, H.sub.S) of the cutting face.

4. The saw tooth according to claim 2, wherein a width (BB) of the attachment projection is smaller than the width (B.sub.S, B.sub.S) of the cutting face.

5. The saw tooth according to claims 2, wherein the saw tooth has a thickness extending perpendicularly to the height (H.sub.S, H.sub.S, H.sub.S) of the cutting face and perpendicularly to the width (B.sub.S, B.sub.S, B.sub.S) of the cutting face and wherein the thickness of the cutting-face part corresponds to a thickness of the attachment projection.

6. The saw tooth according to claim 2, wherein at least one transition between the cutting-face part and the attachment projection is rounded.

7. The saw tooth according to claim 6, wherein all transitions between the cutting-face part and the attachment projection are rounded.

8. The saw tooth according to claim 1, wherein the cutting face comprises a coating having a hardness that is greater than a hardness of a remainder of the cutting-face part.

9. The saw tooth according to claim 8, wherein the attachment projection does not have a coating.

10. The saw tooth according to claim 2, wherein the attachment projection comprises a positioning recess, a positioning projection or both.

11. A saw blade comprising: a saw blade body; and at least one saw tooth attached in a longitudinal direction on the saw blade body to extend away, at least in part, from the saw blade body and formed with a cutting-face part having a cutting face with a height (H.sub.S, H.sub.S, H.sub.S) extending in the longitudinal direction and a width (B.sub.S, B.sub.S, B.sub.S) extending perpendicularly to the longitudinal direction, wherein the width (B.sub.S, B.sub.S, B.sub.S) of the cutting face is greater than the height (H.sub.S, H.sub.S, H.sub.S) of the cutting face; wherein the saw tooth is attached in a saw tooth receptacle of the saw blade body; and wherein a depth (T.sub.2, T.sub.3) of the saw tooth receptacle is greater, in the cutting direction of the saw blade, than the thickness of the cutting-face part.

12. The saw blade according to claim 11, wherein the attachment projection comprises a positioning recess, a positioning projection or both and wherein the saw tooth receptacle comprises a position projection corresponding to the positioning recess, a position recess corresponding to the positioning projection or both.

13. The saw blade according to claim 11, wherein a depth (T.sub.1) of the saw tooth receptacle corresponds, in a cutting direction of the saw blade, to the thickness of the cutting-face part, the thickness of the attachment projection or both.

14. The saw blade according to claim 11, wherein the saw blade is a circular saw blade, an endless saw blade, a disk-shaped milling cutter, or a hacksaw blade.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Further features and advantages of the invention will become apparent from the description of embodiments that follows, with reference to the attached figures, wherein:

[0027] FIG. 1 presents a section of a front view of a first saw blade having a first saw tooth;

[0028] FIG. 2 presents a front view of a second saw tooth;

[0029] FIG. 3 presents a front view of a third saw tooth;

[0030] FIG. 4 presents a front view of a fourth saw tooth;

[0031] FIG. 5 presents a front view of a fifth saw tooth;

[0032] FIG. 6 presents a front view of a sixth saw tooth;

[0033] FIG. 7a presents a front view of a seventh saw tooth;

[0034] FIG. 7b presents a side view of the seventh saw tooth;

[0035] FIG. 7c presents a side view of an eighth saw tooth;

[0036] FIG. 7d presents a side view of a ninth saw tooth;

[0037] FIG. 7e presents a side view of a tenth saw tooth;

[0038] FIG. 7f presents a side view of an eleventh saw tooth;

[0039] FIG. 8a presents a section of a side view of a second saw blade having a twelfth saw tooth and a thirteenth saw tooth;

[0040] FIG. 8b presents a side view of the twelfth saw tooth, alone;

[0041] FIG. 9 presents a section of a side view of a third saw blade having a fourteenth saw tooth and a fifteenth saw tooth;

[0042] FIG. 10a presents a front view of a sixteenth saw tooth;

[0043] FIG. 10b presents a front view of a seventeenth saw tooth;

[0044] FIG. 10c presents a front view of an eighteenth saw tooth;

[0045] FIG. 11a presents a front view of a nineteenth saw tooth;

[0046] FIG. 11b presents a front view of a twentieth saw tooth; and

[0047] FIG. 12 presents a section of a side view of a fourth saw blade having a twenty-first saw tooth and a twenty-second saw tooth.

DETAILED DESCRIPTION OF THE INVENTION

[0048] The following is a detailed description of example embodiments of the invention depicted in the accompanying drawings. The example embodiments are presented in such detail as to clearly communicate the invention and are designed to make such embodiments obvious to a person of ordinary skill in the art. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention, as defined by the appended claims.

[0049] FIG. 1 shows a front view of a first saw blade 10a having a first saw tooth 12a. The first saw tooth 12a is attached to a saw blade body 14a. The saw blade body 14a is shown in an exposed view. The first saw tooth 12a comprises a cutting-face part 15a having a cutting face 16a. The cutting face 16a forms the front side of the cutting-face part 15a. An attachment projection 18a of the first saw tooth 12a adjoins the cutting-face part 15a. A double arrow 20 indicates the longitudinal direction of the first saw blade 10a and the first saw tooth 12a. The first saw tooth 12a extends away from the saw blade body 14a in the longitudinal direction.

[0050] The cutting face 16a has a height H.sub.S in the longitudinal direction. Perpendicular to this height H.sub.S, the cutting face 16a has a width B.sub.S. The width B.sub.S is more than twice as great as the height H.sub.S of the cutting face 16a. Thus, the first saw tooth 12a can be securely attached to the saw blade body 14a without the possibility of the first saw tooth 12a being lifted off the saw blade body 14a due to leverage during sawing.

[0051] The first saw tooth 12a is attached to the saw blade body 14aon the back side of this first saw tooth, in the region of the cutting face 16a. The holding force of the first saw tooth 12a on the saw blade body 14a is further increased by the attachment projection 18a. The attachment projection 18a has a height H.sub.B in the longitudinal direction and a width B.sub.B perpendicular to the longitudinal direction. The overall height H.sub.G, comprising the cutting-face height H.sub.S and the attachment projection height H.sub.B, is less than the width B.sub.S of the cutting face 16a.

[0052] The width B.sub.B of the attachment projection 18a is adapted to the width of the saw blade body 14a. In other words, the width B.sub.B of the attachment projection 18a is identical to the width of the saw blade body 14a.

[0053] FIG. 2 shows a front view of a second saw tooth 12b, which substantially corresponds to the first saw tooth 12a according to FIG. 1. In contrast to the first saw tooth 12a, the second saw tooth 12b is rounded between a cutting face 16b and an attachment projection 18b. The roundings are indicated by reference signs 22 and 24. The roundings 22 and 24 minimize the risk of a crack forming due to a notch effect on the second saw tooth 12b.

[0054] FIG. 3 shows a front view of a third saw tooth 12c, which has a round positioning recess 26 on an attachment projection 18c. The round positioning recess 26 is used to position and install the third saw tooth 12c relative to a saw blade body.

[0055] FIG. 4 shows a front view of a fourth saw tooth 12d having an attachment projection 18d. The attachment projection 18d comprises a notch-shaped positioning recess 28. The notch-shaped positioning recess 28 is used for the exact positioning of the fourth saw tooth 12d on an appropriate saw blade body.

[0056] FIG. 5 shows a front view of a fifth saw tooth 12e in the form of a flat tooth. A cutting face 16e of the fifth saw tooth 12e has a height H.sub.S, which is smaller than a width B.sub.S of the cutting face 16e. The fifth saw tooth 12e does not have an attachment projection. The height H.sub.S therefore corresponds to the overall height H.sub.G.

[0057] FIG. 6 shows a sixth saw tooth 12f in the form of a top tooth. A cutting face 16f of the sixth saw tooth 12f also has a greater width B.sub.S than height H.sub.S.

[0058] The saw tooth can have any suitable blade geometry, for example, also in the form of a trapezoidal tooth or an alternating direction tooth.

[0059] FIG. 7a shows a front view of a seventh saw tooth 12g. The front view of the saw tooth 12g corresponds to the front view of the saw teeth according to FIGS. 7b-7f, which are described in the following. A contour edge 29 is visible only in the front view corresponding to FIGS. 7c and 7f.

[0060] FIG. 7b shows the saw tooth 12g, in a side view. The saw tooth 12g comprises a cutting-face part 15g and an attachment projection 18g. The front side of the saw tooth 12g is provided with a coating 32g. The coating 32g extends over the front side of the cutting-face part 15g, i.e., over the cutting face 16g, and over the front side of the attachment projection 18g.

[0061] FIG. 7c shows a side view of a saw tooth 12h having a cutting-face part 15h, an attachment projection 18h and a coating 32h. The coating 32h is provided only on the front side of the cutting-face part 15h. The attachment projection 18h does not have a coating. Thus, the saw tooth 12h is easily soldered, welded and/or bonded to a corresponding saw blade body via the attachment projection 18h.

[0062] FIG. 7d shows a side view of a saw tooth 12i. The saw tooth 12i substantially corresponds to the saw tooth 12g according to FIG. 7b, wherein, in contrast to the attachment projection 18g, an attachment projection 18i is thinner on the back side thereof. A step 34 is thereby formed between the attachment projection 18i and a cutting-face part 15i. During sawing, the cutting-face part 15i bears against a saw blade body via the step 34. The loadability of the ninth saw tooth 12i during sawing is increased as a result.

[0063] FIG. 7e shows a saw tooth 12j, which substantially corresponds to the saw tooth 12i according to FIG. 7d. In the case of the saw tooth 12j, however, the thickness of an attachment projection 18j is reduced to the extent that only a coating 32j remains.

[0064] FIG. 7f shows a saw tooth 12k. The saw tooth 12k substantially corresponds to the saw tooth 12i according to FIG. 7d, wherein, in contrast to the saw tooth 12i, only one cutting-face part 15k has a coating 32k.

[0065] FIG. 8a shows a side view of a second saw blade 10b, in sections. The second saw blade 10b has a saw blade body 14b. A saw tooth 12l and a saw tooth 12m are attached to the saw blade body 14b. An arrow 36 indicates the cutting direction of the second saw blade 10b.

[0066] FIG. 8b shows the saw tooth 12l without the second saw blade 10b. A comparison of FIGS. 8a and 8b reveals that the saw tooth 12l according to FIG. 8a is anchored in the saw blade body 14b by a press fit. Likewise, the saw tooth 12m is anchored in the saw blade body 14b by a press fit, wherein the saw teeth 12l and 12m are identically designed. As an alternative or in addition to the attachment of the saw teeth by a press fit, one saw tooth 12l, 12m or all saw teeth 12l, 12m can be attached on the saw blade body 14b in another manner, such as by soldering, welding, and/or bonding.

[0067] A saw tooth receptacle 38a is provided in the saw blade body 14b, as shown in FIG. 8a, to accommodate the saw tooth 12l. The saw tooth receptacle 38a is substantially U-shaped. The depth of the saw tooth receptacle 38a is labelled with T.sub.1. The depth T.sub.1 of the saw tooth receptacle 38a corresponds to the thickness of a cutting-face part 15l and the thickness of an attachment projection 18l of the twelfth saw tooth 12l. Thus, the twelfth saw tooth 12l is securely held on the saw blade body 14b.

[0068] FIG. 9 shows a section of a side view of a third saw blade 10c having a saw blade body 14c. A saw tooth 12n and a saw tooth 12o are attached to the saw blade body 14c. The saw tooth 12n and the saw tooth 12o are identically designed. The saw blade body 14c has a saw tooth receptacle 38b and a saw tooth receptacle 38c. The depth of the saw tooth receptacle 38b is labelled with T.sub.2, and the depth of the saw tooth receptacle 38c is labelled with T.sub.3. T.sub.2 and T.sub.3 are greater than the thickness of the saw tooth 12n and the saw tooth 12o, respectively. The third saw blade 10c therefore has a chip space behind the saw tooth 12n and the saw tooth 12o, relative to the cutting direction.

[0069] FIG. 10a shows a saw tooth 12p in a front view. In contrast to the previously described saw teeth, the saw tooth 12p has two measurement projections 40a, 40b. The measurement projections 40a, 40b result in an extension of the lateral faces 42a, 42b of the saw tooth 12p. The measurement projections 40a, 40b are used to accurately measure and adjust the position and angle of inclination (radial angle) of the lateral surfaces 42a, 42b while these undergo sharpening or erosion processing. Once the saw tooth 12p, as shown in FIG. 10a, is finished, the measurement projections 40a, 40b are removed along the broken lines and are no longer present on the finished saw tooth.

[0070] FIG. 10b shows a saw tooth 12q. The saw tooth 12q has measurement projections 40c, 40d to permit the geometry of this saw tooth to be accurately determined. Once the desired geometry, as shown, has been obtained, the measurement projections 40c, 40d are removed along the broken lines.

[0071] FIG. 10c shows a saw tooth 12r. The geometry of the saw tooth 12r is exactly determined and checked during production by measurement projections similar to those of FIGS. 10a and 10b, namely the measurement projections 40e, 40f in this case. Afterward, the measurement projections 40e, 40f are removed along the broken lines.

[0072] FIG. 11a shows a saw tooth 12s having an attachment projection 18s. The attachment projection 18s is wider toward the bottom, i.e., toward a saw blade body. The attachment projection therefore has a substantially dovetailed shape.

[0073] FIG. 11b shows a saw tooth 12t having an attachment projection 18t, which is narrower toward the bottom. The attachment projections 18s (see FIGS. 11a) and 18t are particularly well-suited for attaching the saw teeth 12s (see FIGS. 11a) and 12t in correspondingly designed saw tooth receptacles.

[0074] The attachment projection of a saw tooth can have a non-parallel course relative to a central plane of a saw blade body, as made evident in FIGS. 11a and 11b, as examples.

[0075] FIG. 12 shows a section of a side view of a fourth saw blade 10d having a saw blade body 14d. A saw tooth 12u and a saw tooth 12v in saw tooth receptacles 38d, 38e are attached to the saw blade body 14d. In contrast to the previously described saw blade bodies, the saw blade body 14d comprises a raised area 44a, 44b in front of each of the saw tooth receptacles, namely the saw tooth receptacles 38d, 38e in this case, as viewed in the cutting direction. The raised areas 44a, 44b reduce the load on the saw teeth 12u and 12v. The raised area 44b is slanted on one side, toward the central plane of the saw blade body 14d. As an alternative, the raised area 44b is slanted on both sides, toward the central plane of the saw blade body 14d, or has a bevel.

[0076] In the representation shown in FIG. 12, the raised areas 44a, 44b have a gap 46a, 46b, respectively, relative to the saw teeth 12u, 12v. It is also feasible, however, to not provide a gap between the raised areas 44a, 44b and the saw teeth 12u, 12v, respectively.

[0077] Such a radial raised area of the saw blade body in front of a saw blade receptacle can be used in combination with any previously described saw tooth.

[0078] As will be evident to persons skilled in the art, the foregoing detailed description and figures are presented as examples of the invention, and that variations are contemplated that do not depart from the fair scope of the teachings and descriptions set forth in this disclosure. The foregoing is not intended to limit what has been invented, except to the extent that the following claims so limit that.