CN220296023U - Saw blade - Google Patents

Abstract

The utility model relates to a saw blade, which belongs to the field of circular saw blades, and comprises a blade body, wherein a tooth holder is arranged at the outer edge of the blade body, cutter teeth are fixedly arranged on the tooth holder, each cutter tooth comprises a front cutter tooth and a rear cutter tooth, the front cutter tooth and the rear cutter tooth are alternately arranged in the circumferential direction, an extension line where the projection of the front cutter surface of the rear cutter tooth in the axial direction of the blade body is positioned at the front side of the circle center of the blade body, and an extension line where the projection of the front cutter surface of the front cutter tooth in the axial direction of the blade body is positioned at the rear side of the circle center of the blade body.

Description

Saw blade

Technical Field

The utility model relates to a saw blade, and belongs to the field of circular saw blades.

Background

In the processing of the veneered plate, a groove saw is generally adopted to carry out forward milling to process a groove with the depth of 1-2 mm, then the main saw is used for carrying out reverse milling to carry out splitting, the saw path of the groove saw is slightly wider than that of the main saw, thus the saw slit of the lower plate surface processed by the forward milling groove saw is not easy to generate broken edges, the upper plate surface processed by the reverse milling main saw is not easy to generate broken edges, and a better splitting effect can be obtained.

The groove saw is milling forward and has smaller cutting depth, so that a smaller cutting angle can be provided when the lower surface of the plate is processed, but the current groove saw on the market generally has a positive rake angle, and the positive rake angle causes the cutter teeth of the saw blade to generate cutting component force towards the lower part of the plate surface, so that edge breakage is easy to generate when the plate is processed to a position where the plate is not tightly attached; all adopt the negative rake angle can make the sawtooth avoid producing the cutting component that deviates from the face when cutting, reduce the face incision and break up the risk of limit, but adopt the groove saw of negative rake angle again because the cutting force is big completely, the saw bit blade passivation is fast, saw bit life-span is short.

Disclosure of Invention

The utility model aims to provide a saw blade which is used for solving the problems that edges are easy to collapse when a plate with an unsound joint is processed, the saw blade is fast in passivation and the service life is short.

In order to achieve the above object, the present utility model provides a method comprising:

the utility model relates to a saw blade, which comprises a blade body, wherein a tooth holder is arranged at the outer edge of the blade body, and blade teeth are fixedly arranged on the tooth holder.

The backward tilting cutter teeth can reduce the risk of edge breakage of the plate surface, the forward tilting cutter teeth have large cutting force, the functions of the cutter teeth are divided, the cutter teeth exert respective advantages, the edge breakage is slowed down and passivation is delayed through the alternate installation mode of the two cutter teeth.

Further, the distance from the highest point of the back rake cutter tooth to the center of the sheet body is larger than the distance from the highest point of the front rake cutter tooth to the center of the sheet body, so that the height difference is formed.

The backward tilting cutter teeth are higher than the forward tilting cutter teeth, so that the cutting point of the forward tilting cutter teeth is in the cutting range of the forward tilting cutter teeth.

Further, the height difference ranges between 0.3mm and 0.5 mm.

Further, the height difference was 0.3mm.

Further, the rake face of the back rake tooth is designed to be of a concave structure.

As a further improvement of the rake face of the back rake tooth, the face to be cut is divided by designing the rake face to be of a concave structure.

Further, the concave structure of the front cutter surface of the backward tilting cutter tooth is a V-shaped top edge.

Further, the top edge of the back rake tooth is designed as an inner concave structure.

As a further improvement on the tip edge of the backward tilting blade, the two ends of the tip edge are high, so that the tip edge is easier to scratch the plate surface.

Further, the inner concave structure of the top edge of the backward tilting cutter tooth is a V-shaped top edge.

Further, the angle of inclination of the V-shaped top edge of the back rake tooth is between 5 ° and 10 °.

Further, the inclination angle is 5 °.

Further, the rake face of the rake teeth is a flat face.

Further, the back rake teeth and/or the front rake teeth are polycrystalline diamond teeth.

The use of polycrystalline diamond cutter teeth further increases the hardness of the cutter teeth.

The utility model has the beneficial effects that: the functions of the two tooth-shaped cutter teeth are clearly divided, so that the advantages of different tooth shapes are better exerted, and the cutter has the advantages of difficult edge breakage during processing and long service life.

Drawings

FIG. 1 is a front view of a saw blade of the present utility model;

FIG. 2 is a left side view of a saw blade of the present utility model;

FIG. 3 is a top view of a saw blade portion of the present utility model;

in the figure: 1. negative rake teeth; 2. positive rake teeth; 3. an alloy matrix.

Detailed Description

The present utility model will be further described in detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent.

In the processing of veneered plates, saw blades on the market generally have positive front angles, the positive front angles easily cause edge breakage when the saw blades are processed to the plate position with unsmooth lamination, and the negative front angles can reduce the risk of edge breakage of plate surface cuts, but the groove saw with the negative front angles is completely adopted, and the cutting force is large, so that the cutting edge of the saw blade is passivated quickly, and the service life of the saw blade is short; according to the novel saw blade, the negative rake angle and the positive rake angle are alternately arranged on the circumference of the saw blade, so that the problems that a plate surface cut is easy to collapse and the cutting edge of the saw blade is passivated fast and the service life of the saw blade is short are solved.

Saw blade embodiment 1:

as shown in fig. 1, the saw blade comprises an alloy matrix 3 as a sheet body, in this embodiment, polycrystalline diamond cutter teeth 1 and polycrystalline diamond cutter teeth 2 are alternatively arranged on a tooth holder of the alloy matrix 3, in other embodiments, cemented carbide cutter teeth can be adopted, wherein the cutter teeth 1 have a negative rake angle α and are negative rake angle cutter teeth, and an extension line of a projection of a front cutter face of the cutter teeth 1 in the axial direction of the sheet body is positioned at the front side of the center of the sheet body; the cutter tooth 2 has a positive rake angle beta, and is a positive rake angle cutter tooth, and an extension line of a projection of a front cutter face of the cutter tooth 2 in the axial direction of the sheet body is positioned at the rear side of the center of the sheet body, wherein the distance from the highest point of the cutter tooth 1 to the center of the sheet body is 0.3mm longer than the distance from the highest point of the cutter tooth 2 to the center of the sheet body.

In this embodiment, the "front side and the" rear side "are referred to as" front side and rear side "in fig. 1, respectively, and correspond to the side of the blade tooth with respect to the center of the blade body in the rotation direction of the blade body.

It should be noted that the alternate arrangement of the cutter teeth 1 and the cutter teeth 2 may be that one cutter tooth 1 and one cutter tooth 2 are arranged at intervals, one cutter tooth 1, two cutter teeth 2 are arranged at intervals, two cutter teeth 1, one cutter tooth 2 is arranged at intervals, a plurality of cutter teeth 1, a plurality of cutter teeth 2 are arranged at intervals, and the arrangement in this embodiment does not represent the unique embodiment.

The cutter tooth 1 is provided with a V-shaped top edge, as shown in fig. 2, the inclination angle of the V-shaped top edge is 5 degrees, the cutter tooth 1 is also provided with a V-shaped front cutter face, as shown in fig. 3, the included angle between the cutting edges on two sides of the front cutter face and the axial inclination angle is gamma, the cutter tooth 1 is responsible for forming a groove on the board surface to scratch the veneer layer, and the design can not reduce the number of effective cutter teeth which participate in sawing on two sides of a cutting joint and is sharper.

The cutter tooth 2 has a flat rake face, and as shown in fig. 2, the cutter tooth 2 is responsible for removing the cut middle portions on both sides.

The functions of the two tooth-shaped cutter teeth are clearly divided, so that the advantages of different tooth shapes can be better exerted.

The present embodiment of the tooth 1 is a preferred embodiment, and is not intended to limit the present utility model.

Saw blade embodiment 2:

a saw blade differing from embodiment 1 in that the distance from the highest point of the blade tooth 1 to the center of the blade body is the same as the distance from the highest point of the blade tooth 2 to the center of the blade body.

Saw blade example 3:

a saw blade differs from embodiment 1 in that the cutter teeth 1 and 2 are both straight rake faces.

Saw blade embodiment 4:

a saw blade differs from embodiment 1 in that the cutter teeth 1 are straight rake faces, the cutter teeth 2 are V-shaped rake faces and V-shaped top edges.

Saw blade embodiment 5:

a saw blade which differs from embodiment 1 in that the cutter teeth 1 and 2 are both V-shaped rake faces and V-shaped top edges.

Claims (12)

1. The utility model provides a saw bit, includes the lamellar body, and the outer fringe position of lamellar body is equipped with the toothholder, its characterized in that, fixed mounting has the cutter tooth on the toothholder, the cutter tooth includes preceding cutter tooth and backward cutter tooth, and preceding cutter tooth and backward cutter tooth set up in turn in the circumferencial direction, and the front blade face of backward cutter tooth is in the front side at lamellar body centre of a circle at the ascending projection place extension line of lamellar body axis direction, and the front blade face of preceding cutter tooth is in the rear side at lamellar body centre of a circle at the ascending projection place extension line of lamellar body axis direction.

2. The saw blade of claim 1, wherein the distance from the highest point of the back rake teeth to the center of the blade is greater than the distance from the highest point of the front rake teeth to the center of the blade to form a height difference.

3. The saw blade of claim 2, wherein the height difference ranges between 0.3mm and 0.5 mm.

4. A saw blade according to claim 3, wherein the height difference is 0.3mm.

5. The saw blade of any of claims 1-4, wherein the rake surface of the back rake teeth is concave.

6. The saw blade of claim 5, wherein the concave configuration of the rake surface of the back rake teeth is "V" shaped.

7. The saw blade of any of claims 1-4, wherein the top edge of the back rake tooth is concave.

8. The saw blade of claim 7, wherein the concave configuration of the top edge of the back rake tooth is "V" shaped.

9. The saw blade of claim 8, wherein said back rake tooth "V" shaped top edge is angled between 5 ° and 10 °.

10. The saw blade of claim 9, wherein said bevel angle is 5 °.

11. The saw blade of claim 1, wherein the rake surface of the rake teeth is a flat surface.

12. The saw blade of claim 1, wherein the back rake teeth and/or front rake teeth are polycrystalline diamond teeth.