CN105057778A

CN105057778A - Solid carbide internal and external chamfering combined broaching tool

Info

Publication number: CN105057778A
Application number: CN201510614693.8A
Authority: CN
Inventors: 柳军贤
Original assignee: CHENGDU GERUN HI-TECH MATERIALS Co Ltd
Current assignee: Chengdu Great Wall cutting tools Co., Ltd
Priority date: 2015-09-24
Filing date: 2015-09-24
Publication date: 2015-11-18
Anticipated expiration: 2035-09-24
Also published as: CN105057778B

Abstract

The invention discloses a solid carbide internal and external chamfering combined broaching tool. The solid carbide internal and external chamfering combined broaching tool comprises a broaching tool base body (1), a plurality of tool teeth A (2) and plurality of tool teeth B (3), wherein the broaching tool base body (1) is in a cuboid shape; the tool teeth A (2) and the tool teeth B (3) are arranged on the upper and lower sides, which are opposite, of the broaching tool base body (1) respectively; a clamping end (5) is arranged at one end of the broaching tool base body (1); and cutting edges of the tool teeth A (2) and the tool teeth B (3) are close to the clamping end (5). The broaching tool has the beneficial effects that the broaching tool is used for machining internal chamfering and external chamfering of a slide sheet groove, and has the advantage of one-time molding; the quantity of used tools is reduced and the machining cost is reduced; and the tool has the advantages of sharp cutting edges, long service life, high tool rigidity, stable and reliable clamping, small vibration in a machining process and the like; and the machined chamfering has high precision and good finish degree.

Description

Chamfering built-up broach inside and outside a kind of whole hard alloy

Technical field

The present invention relates to broaching tool, particularly chamfering built-up broach inside and outside a kind of whole hard alloy.

Background technology

The process technology of air cylinder of air-conditioner compressor vane slot is refrigeration industry research and the popular project of tackling key problems always, and how the guaranteed price broaching tool produced for Central Hole of Cylinder Bolts vane slot that is cheap and energy quickness and high efficiency is just extremely urgent.

The processing request of air cylinder of air-conditioner compressor vane slot is very high, and depth of parallelism flatness all will control within 0.003mm, and surface roughness requirements reaches Rz0.2.Not only the cost of charp tool is expensive, and the life-span is lower, and the production cycle is very long, the production and processing quantity of serious restriction compressor of air conditioner.In recent years, the material of air cylinder of air-conditioner compressor also there occurs respective change with other reasonses such as prices, except the cast iron cylinder used in the past, occurred again more unmanageable powder metallurgy cylinder, this also brings very large challenge to the enterprise manufacturing broaching tool cutter.

Summary of the invention

The object of the invention is to the shortcoming overcoming prior art, provide that a kind of machining accuracy is high, chamfering built-up broach inside and outside the whole hard alloy of long service life.

Object of the present invention is achieved through the following technical solutions: chamfering built-up broach inside and outside a kind of whole hard alloy, comprise bit base, several cutters tooth A and several cutters tooth B, bit base is cuboid-type, cutter tooth A and cutter tooth B are separately positioned on the relative both sides of bit base, one end of bit base is provided with clamping end, and the cutting edge of cutter tooth A and cutter tooth B is near clamping end.

Described cutter tooth A has 3 ~ 30, and cutter tooth B has 3 ~ 30.

There are 2 ~ 5 finishing teeths in described cutter tooth A, in cutter tooth B, have 2 ~ 5 finishing teeths.

Described cutter tooth A and the rise per tooth of cutter tooth B are between-0.2 ~ 0.3mm.

Described cutter tooth A has two cutting edge A, and cutting edge A and bit base form Y type, and cutter tooth B has two cutting edge B, and cutting edge B and bit base form Y type.

The anterior angle of described cutter tooth A is between 6 ° ~ 15 °, side edge relief angle and top relief angle between 0 ° ~ 5 °, land wide between 0 ~ 0.2mm, the anterior angle of cutter tooth B is between 6 ° ~ 15 °, side edge relief angle and top relief angle between 0 ° ~ 5 °, land wide between 0 ~ 0.2mm.

Described bit base, cutter tooth A, cutter tooth B and clamping end are made by Hardmetal materials is one-body molded.

Described clamping end is provided with the installing hole for clamping cutter.

The present invention has the following advantages:

1. this broaching tool adopts carbide alloy manufacture, it has the advantages such as intensity is high, wear-resisting, long service life, by one-body molded manufacture, make this broaching tool rigidity high, be conducive to improving machining accuracy, and two chamferings of this broaching tool time processing compresser cylinder vane slot can be made, avoid use two broaching tools, save production cost, simplified broaching tool processing technology and chamfer machining technique, improve working (machining) efficiency;

2. this broaching tool has that cutter tooth is sharp, stock-removing efficiency is high, cutting surface crudy advantages of higher;

3. to be threaded clamping broaching tool by use, to have that bonding strength is high, clamping precision advantages of higher.

Accompanying drawing explanation

Fig. 1 is the structural representation of chamfering built-up broach inside and outside a kind of whole hard alloy;

Fig. 2 is the top view of chamfering built-up broach inside and outside a kind of whole hard alloy;

Fig. 3 is that the D of chamfering built-up broach inside and outside a kind of whole hard alloy is to sectional view;

Fig. 4 is that the A of chamfering built-up broach inside and outside a kind of whole hard alloy is to sectional view;

Fig. 5 is that the B of chamfering built-up broach inside and outside a kind of whole hard alloy is to structural representation;

Fig. 6 is the structural representation of vane slot;

In figure, 1-bit base, 2-cutter tooth A, 21-cutting edge A, 3-cutter tooth B, 31-cutting edge B, 4-installing hole, 5-clamping end, 6-vane slot, chamfering in 7-, the outer chamfering of 8-.

Detailed description of the invention

Below in conjunction with accompanying drawing, the present invention will be further described, and protection scope of the present invention is not limited to the following stated:

As shown in Figure 1 and Figure 2, chamfering built-up broach inside and outside a kind of whole hard alloy, for processing chamfering 7 and outer chamfering 8 in vane slot 6, comprise bit base 1, several cutters tooth A2 and several cutters tooth B3, bit base 1 is cuboid-type, cutter tooth A2 and cutter tooth B3 are separately positioned on the relative both sides up and down of bit base 1, and one end of bit base 1 is provided with clamping end 5, and the cutting edge of cutter tooth A2 and cutter tooth B3 is near clamping end 5.

In the present embodiment, described cutter tooth A2 has 3 ~ 30, and wherein have 2 ~ 5 finishing teeths, cutter tooth B3 has 3 ~ 30, wherein has 2 ~ 5 finishing teeths, and described cutter tooth A2 and the rise per tooth of cutter tooth B3 are between-0.2 ~ 0.3mm.

As shown in Figure 3, in the present embodiment, described cutter tooth A2 has two cutting edge A21, cutting edge A21 and bit base 1 form Y type, and cutting edge A21 is for processing interior chamfering 7, and the profile of cutting edge A21 is identical with the profile of interior chamfering 7, cutter tooth B3 has two cutting edge B31, cutting edge B31 and bit base 1 form Y type, and cutting edge B31 is for processing outer chamfering 8, and the profile of cutting edge B31 is identical with the profile of outer chamfering 8.

As shown in Figure 4, Figure 5, in the present embodiment, the anterior angle of described cutter tooth A2 between 6 ° ~ 15 °, side edge relief angle and top relief angle between 0 ° ~ 5 °, land wide between 0 ~ 0.2mm, the anterior angle of cutter tooth B3 is between 6 ° ~ 15 °, side edge relief angle and top relief angle are between 0 ° ~ 5 °, and land wide between 0 ~ 0.2mm, can ensure the sharpness of cutting edge A21 and cutting edge B31 with this, make stock-removing efficiency high, after cutting, machined surface surface quality is high.

In the present embodiment, described bit base 1, cutter tooth A2, cutter tooth B3 and clamping end 5 are made by Hardmetal materials is one-body molded, can realize time processing two chamferings, improve working (machining) efficiency with this, avoid use two broaching tools, have saved production cost.

In the present embodiment, described clamping end 5 is provided with the installing hole 4 for clamping cutter, adopt the method be threaded to fix clamping broaching tool, carry out clamping in the mode that this replaces traditional " V " type of opening groove fixing on pull bar, improve the precision of bonding strength and clamping.

Claims

1. chamfering built-up broach inside and outside a whole hard alloy, it is characterized in that: comprise bit base (1), several cutters tooth A(2) and several cutters tooth B(3), bit base (1) is cuboid-type, cutter tooth A(2) with cutter tooth B(3) be separately positioned on the relative both sides up and down of bit base (1), one end of bit base (1) is provided with clamping end (5), cutter tooth A(2) and cutter tooth B(3) cutting edge near clamping end (5).

2. chamfering built-up broach inside and outside a kind of whole hard alloy according to claim 1, is characterized in that: described cutter tooth A(2) have 3 ~ 30, cutter tooth B(3) there are 3 ~ 30.

3. chamfering built-up broach inside and outside a kind of whole hard alloy according to claim 2, is characterized in that: described cutter tooth A(2) in have 2 ~ 5 finishing teeths, cutter tooth B(3) in have 2 ~ 5 finishing teeths.

4. chamfering built-up broach inside and outside a kind of whole hard alloy according to claim 1, is characterized in that: described cutter tooth A(2) and cutter tooth B(3) rise per tooth between-0.2 ~ 0.3mm.

5. chamfering built-up broach inside and outside a kind of whole hard alloy according to claim 1, it is characterized in that: described cutter tooth A(2) have two cutting edge A(21), cutting edge A(21) form Y type with bit base (1), cutter tooth B(3) have two cutting edge B(31), cutting edge B(31) form Y type with bit base (1).

6. chamfering built-up broach inside and outside a kind of whole hard alloy according to claim 1, it is characterized in that: described cutter tooth A(2) anterior angle between 6 ° ~ 15 °, side edge relief angle and top relief angle are between 0 ° ~ 5 °, land wide between 0 ~ 0.2mm, cutter tooth B(3) anterior angle between 6 ° ~ 15 °, side edge relief angle and top relief angle between 0 ° ~ 5 °, land wide between 0 ~ 0.2mm.

7. chamfering built-up broach inside and outside a kind of whole hard alloy according to claim 1, is characterized in that: described bit base (1), cutter tooth A(2), cutter tooth B(3) and clamping end (5) make by Hardmetal materials is one-body molded.

8. chamfering built-up broach inside and outside a kind of whole hard alloy according to claim 1, is characterized in that: described clamping end (5) is provided with the installing hole (4) for clamping cutter.