CN218192939U

CN218192939U - Cutting saw blade

Info

Publication number: CN218192939U
Application number: CN202221874729.8U
Authority: CN
Inventors: 胡亚涛; 邵建地
Original assignee: Ehrman Precision Tools Zhejiang Co ltd
Current assignee: Ehrman Precision Tools Zhejiang Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2023-01-03
Anticipated expiration: 2032-07-18

Abstract

The utility model provides a cutting saw bit belongs to cutting accessory technical field. It has solved the short-lived problem of current cutting saw bit. This cutting saw bit, including the saw bit body, outside border department on the saw bit body is provided with a plurality of cutting kerve, has the inside groove between the adjacent cutting kerve, is provided with the cutting sawtooth in every cutting kerve 2, and the upper end of cutting sawtooth is worn out to the outer cutting material of cutting kerve, and the lower extreme of cutting sawtooth has the inclined plane that sets up downwards towards inside groove lopsidedness. The utility model has the advantages of long service life.

Description

Cutting saw blade

Technical Field

The utility model belongs to the technical field of the cutting accessory, a cutting saw bit is related to.

Background

A saw blade is a general term for a thin circular cutter for cutting solid materials. The saw blade can be divided into: a diamond saw blade for stone cutting; a high speed steel saw blade for cutting metal material; the hard alloy saw blade is mainly composed of a saw blade body and saw teeth, and the saw blade body rotates at a high speed to drive the saw teeth to cut workpieces.

Most of the sawtooth on the current saw bit all is integrated into one piece, and the saw bit is at the during operation, and the sawtooth is whole all can with the surperficial friction contact of work piece, increase heat production and the wearing and tearing on sawtooth surface, cause the life reduction of saw bit.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, provide a long service life's cutting saw bit.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model provides a cutting saw blade, includes the saw bit body, its characterized in that, the outside border department on the saw bit body is provided with a plurality of cutting saw groove, has the inside groove between the adjacent cutting saw groove, every cutting saw inslot be provided with the cutting sawtooth, the upper end of cutting sawtooth is worn out to cutting saw groove outer cutting material, the lower extreme of cutting sawtooth has the inclined plane that sets up downwards towards inside groove one side slope.

In the above-mentioned cutting saw blade, the cutting sawtooth include the sawtooth body, the front end of sawtooth body has inside sunken intrados, be formed with cutting rake angle between intrados and the sawtooth body top, the inclined plane be the bottom face of sawtooth body, dog-ear has been seted up to the bottom of sawtooth body rear end.

In the above-mentioned one cutting saw blade, the inclination angle α between the inclined surface and the horizontal plane is 10 ° to 20 °.

In the above-mentioned cutting saw blade, the bottom end face of the cutting saw slot has an inclined face matched with the inclined face, the rear side of the bottom end face of the cutting saw slot accommodates the bevel of the saw tooth body, a gap is formed between the rear side of the bottom end face of the cutting saw slot and the saw tooth body, and two side faces of the saw tooth body are obliquely connected to the cutting saw slot.

In the above-mentioned one kind of cutting saw blade, the width D1 of sawtooth body upper end is greater than the width D2 of sawtooth body lower extreme, and the cross-section of sawtooth body is trapezoidal.

In the above-mentioned cutting saw blade, the saw blade body and the cutting saw teeth are detachably arranged.

In the above-mentioned cutting saw blade, the cutting teeth are welded in the corresponding cutting saw grooves.

In the above-mentioned one cutting saw blade, the cutting teeth are made of cermet.

In the above cutting saw blade, the center of the saw blade body is provided with a shaft hole and a plurality of heat dissipation holes for fixedly mounting the saw blade body and the rotating shaft of the cutting machine.

In the above-mentioned one kind of cutting saw blade, a plurality of louvres encircle shaft hole circumference evenly distributed.

Compared with the prior art, the utility model has the advantages of: when the cutting sawtooth contacts with the cutting material, because set up the inclined plane for the root of the tooth portion of cutting sawtooth can not contact with the material, reduces the friction between cutting sawtooth and the material, reduces the wearing and tearing on thermal production and sawtooth surface, promotes the life of saw bit.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an enlarged view of a structure in fig. 1.

Fig. 3 is a schematic view of a cutting saw.

Fig. 4 is a right side view of the cutting saw.

Fig. 5 is a top view of the cutting tooth.

In the drawings, 1, a saw blade body; 2. cutting a saw groove; 3. an inner tank; 4. cutting the saw teeth; 7. A saw tooth body; 8. an intrados surface; 9. cutting a front angle; 10. bending the corner; 11. inclining the surface; 12. A gap; 13. a shaft hole; 14. and (4) heat dissipation holes.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 to 5, a cutting saw blade includes a blade body 1, a plurality of cutting saw grooves 2 are disposed at an outer edge of the blade body 1, inner grooves 3 are formed between adjacent cutting saw grooves 2, a cutting saw tooth 4 is disposed in each cutting saw groove 2, an upper end of each cutting saw tooth 4 penetrates through the cutting saw groove 2 to cut a material, and a lower end of each cutting saw tooth 4 has an inclined surface inclined downward toward one side of the inner groove 3.

In this embodiment, all there is cutting sawtooth 4 in every cutting kerve 2 of saw bit body 1, saw bit body 1 is when cutting the material, the upper end and the lateral part of cutting sawtooth 4 directly cut the material with the material contact, when being directed against long panel, traditional cutting sawtooth 4 is in long-time processing cutting because the problem of friction and thermal performance, wearing and tearing are aggravated very easily, and the lower extreme of cutting sawtooth 4 in this embodiment has the inclined plane that sets up downwards towards 3 one side slopes of inside groove, cutting sawtooth 4 is when contacting with the cutting material, owing to set up the inclined plane, make the root of tooth part of cutting sawtooth 4 can not contact with the material, reduce the friction between cutting sawtooth 4 and the material, reduce thermal production and the wearing and tearing on sawtooth surface, promote the life of saw bit.

In this embodiment, cutting sawtooth 4 includes sawtooth body 7, and the front end of sawtooth body 7 has inside sunken intrados 8, is formed with cutting rake angle 9 between intrados 8 and the sawtooth body 7 top, and the inclined plane is the bottom face of sawtooth body 7, and dog-ear 10 has been seted up to the bottom of sawtooth body 7 rear end.

Specifically, the inclination angle α between the inclined surface and the horizontal plane is 10 ° to 20 °, and preferably, α is 15 °. Set up in an inclined manner between 7 lower extremes of sawtooth body and the saw bit body 1, the saw bit body 1 is when cutting the material, cutting sawtooth 4 can carry out clockwise rotation, cutting anterior angle 9 can contact with the material earlier, because inclined plane orientation cutting anterior angle 9 one side downward sloping, cutting sawtooth 4 can reduce the area of contact with the material when the cutting, reduce the friction between cutting sawtooth 4 and the material, reduce the wearing and tearing on thermal production and sawtooth surface, promote the life of saw bit.

In this embodiment, in order to improve the stability of the connection, the bottom end surface of the cutting saw slot 2 has an inclined surface 11 adapted to the inclined surface, and meanwhile, in order to facilitate the installation of the saw tooth body 7, the rear side of the bottom end surface of the cutting saw slot 2 accommodates a bevel 10 of the saw tooth body 7, and forms a gap 12 with the saw tooth body 7, and two side surfaces of the saw tooth body 7 are obliquely connected to the cutting saw slot 2.

In this embodiment, the width D1 of the upper end of the saw tooth body 7 is greater than the width D2 of the lower end of the saw tooth body 7, the ratio between D1 and D2 is between 1.14 and 1.16, the width D3 of the front end of the saw tooth body 7 is greater than the width D4 of the rear end of the saw tooth body, the ratio between D3 and D4 is between 1.01 and 1.03, the cross-section of the saw tooth body 7 is trapezoidal, thereby reducing the contact between the outer side surface of the saw tooth body 7 and the material, reducing the abrasion, and prolonging the service life of the whole saw blade.

In the present embodiment, the saw blade body 1 and the cutting teeth 4 are detachably disposed, and specifically, the cutting teeth 4 are welded in the corresponding cutting saw slots 2. The welding has the advantage that intensity is high, adopts split type design can adopt different material machine-shaping to saw bit body 1 and cutting sawtooth 4.

In the present embodiment, the cutting teeth 4 are made of cermet. The cermet is a heterogeneous composite material consisting of ceramic and bonding metal, wherein the ceramic mainly comprises high-temperature-resistant oxides such as alumina, zirconia and the like or solid solutions of the high-temperature-resistant oxides and the solid solutions of the high-temperature-resistant oxides, the bonding metal mainly comprises high-melting-point metals such as chromium, molybdenum, tungsten, titanium and the like, the ceramic and the bonding metal are ground and uniformly mixed, and the mixture is sintered in an inert atmosphere after forming to obtain the cermet. The cermet has the advantages of both metal and ceramic, and has low density, high hardness, high wear resistance, high heat conductivity and no cracking caused by fast cooling or heating.

In this embodiment, a shaft hole 13 and a plurality of heat dissipation holes 14 for fixedly mounting the saw blade body 1 and the rotating shaft of the cutting machine are opened at the center of the saw blade body 1, and preferably, the plurality of heat dissipation holes 14 are uniformly distributed around the circumference of the shaft hole 13.

The utility model discloses a theory of operation does: every cutting kerf 2 of saw bit body 1 is interior all to have the cutting sawtooth 4, saw bit body 1 is when cutting the material, the upper end of cutting sawtooth 4 directly cuts the material with the material contact with the lateral part, when being directed against long panel, traditional cutting sawtooth 4 is in long-time processing cutting because the problem of friction and thermal performance, aggravate wearing and tearing very easily, and the lower extreme of cutting sawtooth 4 in this embodiment has the inclined plane that sets up downwards towards 3 inclines of inside groove, cutting sawtooth 4 is when contacting with the cutting material, owing to set up the inclined plane, make the tooth root of cutting sawtooth 4 can not contact with the material, reduce the friction between cutting sawtooth 4 and the material, reduce thermal production and the wearing and tearing on sawtooth surface, promote the life of saw bit.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms blade body 1, cutting kerf 2, internal groove 3, cutting teeth 4, tooth body 7, intrados surface 8, rake angle 9, dog angle 10, rake surface 11, clearance 12, shaft hole 13, heat dissipation hole 14, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and they are to be interpreted as having any additional limitation in keeping with the spirit of the present invention.

Claims

1. The utility model provides a cutting saw blade, includes saw bit body (1), its characterized in that, the outside border department on saw bit body (1) is provided with a plurality of cutting kerve (2), has inside groove (3) between the adjacent cutting kerve (2), every cutting kerve (2) in be provided with cutting sawtooth (4), the upper end of cutting sawtooth (4) is worn out to cutting kerve (2) external cutting material, the lower extreme of cutting sawtooth (4) has the inclined plane that sets up downwards towards inside groove (3) one side slope.

2. The cutting blade according to claim 1, wherein the cutting teeth (4) comprise a tooth body (7), the front end of the tooth body (7) has an inward concave inner arc surface (8), a cutting rake angle (9) is formed between the inner arc surface (8) and the top of the tooth body (7), the inclined surface is the bottom end surface of the tooth body (7), and a bevel (10) is formed at the bottom of the rear end of the tooth body (7).

3. A cutting saw blade according to claim 2, wherein the angle α of inclination between said bevel and the horizontal is 10 ° -20 °.

4. A cutting saw blade according to claim 3, characterized in that the bottom end face of the cutting saw slot (2) has an inclined face (11) matching with the inclined face, the rear side of the bottom end face of the cutting saw slot (2) accommodates the bevel (10) of the saw tooth body (7) and forms a gap (12) with the saw tooth body (7), and the two side faces of the saw tooth body (7) are obliquely connected to the cutting saw slot (2).

5. The cutting blade according to claim 2, characterized in that the width D1 of the upper end of the saw tooth body (7) is greater than the width D2 of the lower end of the saw tooth body (7), and the cross section of the saw tooth body (7) is trapezoidal.

6. A cutting blade according to claim 1, characterized in that the blade body (1) and the cutting teeth (4) are detachably arranged.

7. A cutting saw blade according to claim 6, characterized in that the cutting teeth (4) are welded into the corresponding cutting saw slot (2).

8. A cutting saw blade according to claim 1, characterized in that the cutting teeth (4) are made of cermet.

9. The cutting saw blade according to claim 1, wherein the saw blade body (1) has a central hole (13) and a plurality of heat dissipation holes (14) for fixing the saw blade body (1) to a rotating shaft of a cutting machine.

10. A cutting blade according to claim 9, characterized in that a plurality of said heat dissipation holes (14) are evenly distributed circumferentially around the shaft hole (13).