CN213496926U

CN213496926U - Metal cutting saw blade

Info

Publication number: CN213496926U
Application number: CN202022370124.2U
Authority: CN
Inventors: 魏中华
Original assignee: Foshan Shunde Kenite Cutting Tool Co ltd
Current assignee: Foshan Shunde Kenite Cutting Tool Co ltd
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-06-22
Anticipated expiration: 2030-10-22

Abstract

The utility model discloses a metal cutting saw blade, which belongs to the technical field of saw blades and comprises a basal body, sawteeth and a cutter head, wherein the middle part of the basal body is provided with a shaft hole, the sawteeth are arranged on the outer side of the basal body in a surrounding way, the cutter head is fixed on the toothholder, the basal body comprises two groups of substrates which are mutually overlapped, the radial outer parts of the substrates are mutually connected through pressure welding, the pressure welding points are positioned on the inner side of the sawteeth, in addition, the pressure welding points form a ring around the axial center of the substrates, a plurality of groups of positioning through holes are arranged on the substrates in the circumferential direction around the axial center, the positioning through holes of the two groups of substrates are mutually corresponding and are mutually connected through brazing, the positioning through holes are positioned on one side of the pressure welding points, which is close to the shaft hole, the basal, when one group of substrates deflects or deforms, the influence of deflection or deformation is overcome through the traction of the other group of substrates.

Description

Metal cutting saw blade

Technical Field

The utility model relates to a saw bit technical field, in particular to metal cutting saw bit.

Background

When cutting metal materials, because the material hardness is higher, the axle center of the saw blade is easy to deviate from the axle center of the rotating shaft, and the saw blade is easy to deviate when the thickness of the saw blade is too thin relative to the thickness of the materials or the saw blade is heated to expand and deform, so that the cutting precision is influenced, when the deviation angle of the saw blade is too large, the saw blade is easy to break edges, and broken fragments are easy to splash to cause safety accidents.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects existing in the prior art, the utility model provides a metal cutting saw blade.

The utility model provides a technical scheme that its technical problem adopted is: a metal cutting saw blade comprises a base body, sawteeth and a cutter head, wherein a shaft hole is formed in the middle of the base body, the sawteeth are circumferentially arranged on the outer side of the base body in a surrounding manner, a tooth holder is arranged on the sawteeth, the cutter head is fixedly arranged on the tooth holder, and chip grooves are formed in the tooth bottoms between the sawteeth;

the base member includes two sets of substrates that overlap each other, and two sets of substrate radial direction outsides are through pressure welding interconnect, and the pressure welding point is located the sawtooth inboard to the pressure welding point forms the annular around the substrate axle center, is equipped with multiunit positioning hole around axle center circumference on the substrate, and the positioning hole of two sets of substrates corresponds each other, and through brazing interconnect, positioning hole is located the pressure welding point and is close to axle hole one side.

Preferably, one half of the distance from the pressure welding point to the shaft hole is smaller than the distance from the positioning through hole to the shaft hole.

Preferably, the edges of the orifices at the two ends of the positioning through hole are provided with chamfers.

Preferably, at least one set of key slots is arranged on the shaft hole of the base body.

The utility model has the advantages that:

1. the base body is divided into two groups of substrates which are overlapped with each other, and the two groups of substrates are connected with each other through two layers of welding structures, so that the two groups of substrates can mutually provide support to avoid the substrates from deflection or deformation, and when one group of substrates deflects or deforms, the influence of deflection or deformation is overcome through the traction of the other group of substrates;

2. a gap influencing heat conduction is formed in the base body, when heat is conducted from one side of the base body to the other side, the conduction speed is reduced in the conduction process, and the conduction of the heat from the base body to the other side is delayed;

3. the chamfering is arranged on the edges of the orifices at the two ends of the positioning through hole, so that when brazing is carried out, the welding flux in the positioning through hole can form a plurality of annular convex sections, the structural strength of a brazing welding point can be improved, and the service life of the saw blade is prolonged.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is an exploded view of the base body in an embodiment of the present invention;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

fig. 4 is a schematic cross-sectional view of the positioning through hole in the assembled state of the embodiment of the present invention.

In the figure, 10, a base body, 11, a substrate, 12, a positioning through hole, 13, a chamfer, 14, a shaft hole, 15, a key groove, 16, a sawtooth, 17, a tooth holder, 18, a chip groove, 19, a tool bit, 20 and a pressure welding point.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1-4, the utility model provides a metal cutting saw blade, including base member 10, sawtooth 16 and tool bit 19, base member 10 middle part is equipped with shaft hole 14, is equipped with four groups of keyways 15 on the shaft hole 14 of base member 10, and sawtooth 16 circumference is encircleed and is set up in the base member 10 outside, is equipped with toothholder 17 on the sawtooth 16, and tool bit 19 sets up on toothholder 17 through welded fastening, and the tooth bottom between sawtooth 16 and sawtooth 16 is formed with chip pocket 18;

the base body 10 includes two sets of substrates 11 that overlap each other, two sets of radial outsides of substrate 11 are through pressure welding interconnect, pressure welding point 20 is located sawtooth 16 inboardly, and pressure welding point 20 forms the annular around 11 axle centers on the substrate, 16 inboard two sets of substrates 11 are relative one side through pressure welding interconnect formation base body 10 promptly, be equipped with multiunit positioning hole 12 around axle center circumference on the substrate 11, the half of pressure welding point 20 to axle hole 14 distance is less than positioning hole 12 to axle hole 14 distance, positioning hole 12 both ends drill way edge all is equipped with chamfer 13, positioning hole 12 of two sets of substrates 11 correspond each other, and through brazing interconnect, positioning hole 12 is located pressure welding point 20 and is close to axle hole 14 one side.

Specifically, the base 10 is divided into two groups of mutually overlapped substrates 11, and the two groups of substrates 11 are mutually connected through two layers of welding structures, so that the two groups of substrates 11 can mutually provide support to avoid the substrates 11 from deflection or deformation, when one group of substrates 11 deflects or deforms, the influence of deflection or deformation is overcome through the traction of the other group of substrates 11, and meanwhile, a gap influencing heat conduction is formed in the base 10, namely when heat is conducted from one side of the base 10 to the other side, the conduction speed is reduced in the conduction process, and the conduction of the heat from the base 10 to the other side is delayed; the edges of the orifices at the two ends of the positioning through hole 12 are provided with the chamfers 13, so that when brazing is carried out, the solder in the positioning through hole 12 can form a plurality of annular convex sections, the structural strength of a brazing welding point can be improved, and the service life of the saw blade is prolonged.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. A metal cutting saw blade characterized by: the cutting tool comprises a base body (10), sawteeth (16) and a tool bit (19), wherein a shaft hole (14) is formed in the middle of the base body (10), the sawteeth (16) are circumferentially arranged on the outer side of the base body (10), a tooth holder (17) is arranged on the sawteeth (16), the tool bit (19) is fixedly arranged on the tooth holder (17), and a chip containing groove (18) is formed in the tooth bottom between the sawteeth (16) and the sawteeth (16);

the base body (10) comprises two groups of substrates (11) which are overlapped with each other, the two groups of substrates (11) are connected with each other in the radial direction through pressure welding, the pressure welding points (20) are located on the inner side of the saw teeth (16), the pressure welding points (20) form a ring around the axis of the substrates (11), a plurality of groups of positioning through holes (12) are arranged on the substrates (11) in the circumferential direction around the axis, the positioning through holes (12) of the two groups of substrates (11) correspond to each other, the positioning through holes (12) are connected with each other through brazing, and the positioning through holes (12) are located on one side, close to the axis.

2. The metal cutting saw blade of claim 1, wherein: and one half of the distance from the pressure welding point (20) to the shaft hole (14) is less than the distance from the positioning through hole (12) to the shaft hole (14).

3. The metal cutting saw blade of claim 1, wherein: and the edges of the orifices at the two ends of the positioning through hole (12) are provided with chamfers (13).

4. The metal cutting saw blade of claim 1, wherein: at least one group of key grooves (15) are arranged on the shaft hole (14) of the base body (10).