CN2301281Y

CN2301281Y - Cutter specially adapted for making locking hole of aluminium alloy steel ring for automobile

Info

Publication number: CN2301281Y
Application number: CN 97250841
Authority: CN
Inventors: 陈耀昆
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-08-21
Filing date: 1997-08-21
Publication date: 1998-12-23
Anticipated expiration: 2007-08-21

Abstract

The utility model relates to a drill bit, which solves the problem of the increase of efficiency. A special cutter for machining a locking hole of an aluminum alloy steel ring for an automobile comprises a body and a main drill bit. The utility model is characterized in that the top end of the cutter body is welded with the main drill bit which is in an integral forming and is made of aluminum alloy; the upper section of the main drill bit is provide with a drill bit part with a small hole; the lower section of the main drill bit is provide with a drill bit part with a big hole; the rear sides of two main cutting angles of the drill bit part with the small hole and the drill bit part with the big hole are provided with tangent surfaces; the main drill bit is provided with two arced grooves returning dust; the bottom end of the main drill bit is provided with a V-shaped convex surface; the top end of the body is provided with a V-shaped concave surface which is connected with the V-shaped convex surface to be welded into a whole. The utility model is used for drilling holes.

Description

The dedicated tool of processing automobile aluminum-rim locking hole

The utility model relates to cutter, refers in particular to the target drill that a kind of machining hole is used.

The dedicated tool of existing processing automobile aluminum-rim locking hole, shown in Fig. 5,6: comprise a little drill bit that gets out aperture 311 earlier, get out the bevel tool 5 of mesopore 312 and the reamer 6 of a processing macropore 313, this cutter operating speed is slow, and the normal card bits that produce; Another kind of dedicated tool is formed in one, and it has a body 7, and be embedded

partinium cutting piece

71,72 with its cutting portion, and chip removal arc groove 73 is arranged, but because of not anti-high rotating speed, and chip removal is not good, and cutting speed is not high yet, and working (machining) efficiency is still undesirable.

The purpose of this utility model provides a kind of stock-removing efficiency dedicated tool of processing automobile aluminum-rim locking hole preferably.

The purpose of this utility model is achieved in that the dedicated tool of processing automobile aluminum-rim locking hole, it comprises body, main drill bit, it is characterized in that: establish one in cutter body top weldering and have the star drill head and hypomere has the main drill bit of macropore bit head, be equipped with a tangent plane in two primary cutting angles rear sides of star drill head and macropore bit head with the one-body molded epimere of tungsten gold system; Main drill bit has two to move back bits arc groove, and the bottom is provided with the V-arrangement convex surface and is provided with the V-arrangement concave surface with the body top and is connected mutually and welds one.

Above-mentioned design, by the one-body molded main drill bit that has big or small hole drill head and move back bits arc groove, and the effect of its tangent plane of nationality, reach the effect that improves stock-removing efficiency.

Below by drawings and Examples the utility model is described further again.

Fig. 1 the utility model main-body structure schematic diagram;

Fig. 2 the utility model working state schematic representation;

Fig. 3 the utility model processing steel ring schematic diagram;

Fig. 4 is the local enlarged diagram of Fig. 3;

Fig. 5,6 are existing cutter processing, organigram.

As shown in Figure 1, 2: the utility model comprises body 1, main drill bit 2, it is characterized in that: establish one with cutter body 1 top weldering and have star drill head 21 and hypomere has the main drill bit of macropore bit head 22, be equipped with a tangent plane 212,222 in two primary cutting angles, 211,221 rear sides of star drill head and macropore bit head with the one-body molded epimere of aluminium alloy system; Main drill bit 2 has two to move back bits arc groove 23, and the bottom is provided with V-arrangement convex surface 25 and is provided with V-arrangement concave surface 11 with the body top and is connected mutually and welds one.Cutting limit 24, tapering is arranged at main drill bit 2 tops.

Shown in Fig. 3,4: a plurality of locking holes 31 that the utility model is used on the aluminum-rim 3 of processing automobile or locomotive have splendid rigidity and machinability, and chip removal is smooth and easy, can finish drilling program in the short time, general about 6 seconds, and crudy is good, the efficient height, and cost is low.

Claims

1, the dedicated tool of processing automobile aluminum-rim locking hole, it comprises body, main drill bit, it is characterized in that: establish one in cutter body top weldering and have the star drill head and hypomere has the main drill bit of macropore bit head, be equipped with a tangent plane in two primary cutting angles rear sides of star drill head and macropore bit head with the one-body molded epimere of aluminium gold system; Main drill bit has two to move back bits arc groove, and the bottom is provided with the V-arrangement convex surface and is provided with the V-arrangement concave surface with the body top and is connected mutually and welds one.