CN209681169U - A kind of automobile brake disc braking surface process tool - Google Patents

Abstract

A kind of automobile brake disc braking surface process tool, belongs to metal cutting process technical field.The cutter hub front end face of the cutter is square, and 45o chamfering is equipped at its corner location, forms eight small arc-shaped cutting edges.The utility model had both been avoided be detained because of chip caused by cutting edge roundness sharply wear phenomenon, in turn ensure workpiece in roughness, circumferential thickness is poor, radial thickness is poor and bounce stability in terms of meet product technology requirement, the cutting edge quantity alternatively used simultaneously increases, greatly prolong cutter life, to solve the problems, such as that cutter is sharply worn in automobile brake disc braking surface process, achieve the purpose that improve product quality, tool life.

Description

A kind of automobile brake disc braking surface process tool

Technical field

The utility model relates to a kind of metal cutting tool, especially a kind of automobile brake disc braking surface process tool belongs to In metal cutting process technical field.

Background technique

Brake disc, that is, brake disc is the critical component in brake system of car, is fixedly mounted on wheel and wheel hub, automobile Brake caliper is set to clamp brake disc by touching on the brake in the process of moving, to play the role of slowing down or stopping.In order to protect Demonstrate,proving brake disc has good braking effect, needs to finish braking surface in brake disc production process, to guarantee to brake The braking surface of disk meets roughness requirements.

As shown in attached drawing 1, Fig. 2, in the prior art for the processing of braking surface on automobile brake disc 1, generally use up and down Two sets of cutters 2 of arrangement cut the mode of two braking surfaces simultaneously, and the cutter 2 is set there are four circular arc point of a knife cutting edge, due to cutting The phenomenon that bushel iron bits 3 formed in the process can be trapped between point of a knife and machined surface, point of a knife cutting edge is caused sharply to wear, it is not only right Surface roughness, the circumferential thickness of braking surface are poor, radial thickness is poor and stability etc. of beating has a negative impact, and shorten Cutting-tool's used life.

Utility model content

The utility model provides a kind of automobile brake disc braking surface process tool, it is intended to solve automobile brake disc braking surface and add The problem of cutter is sharply worn during work achievees the purpose that improve product quality, tool life.

To achieve the above objectives, the present invention adopts the following technical solutions:

A kind of automobile brake disc braking surface process tool, cutter hub front end face are square, and are equipped at its corner location 45o chamfering forms eight small arc-shaped cutting edges.

Above-mentioned automobile brake disc braking surface process tool, is placed in the cutter holder of lathe equipments tool apron, is compressed by pressing plate solid It is fixed.

Above-mentioned automobile brake disc braking surface process tool finished for realizing the braking surface that cutting depth is 0.3mm Journey, the chamfering the length of the hypotenuse L >=1.14mm, small arc-shaped radius of edge R >=0.4mm, its bottom edge and workpiece system after cutter is fixed Dynamic face angle α=5o, in running order cutting edge and adjacent cutting edge vertical range are not less than 0.96mm.

The utility model is a kind of automobile brake disc braking surface process tool, it is arranged at cutter hub front end face corner location Thus four circular arc point of a knife cutting edges on cutter hub in the prior art are improved to eight small arc-shapeds alternatively used by 45o chamfering Cutting edge, and by the optimization design to chamfering the length of the hypotenuse, guarantee in workpiece process, in running order cutting edge and phase Vertical range is enough that chip is smoothly discharged between adjacent cutting edge, has both avoided cutting edge roundness caused by being detained because of chip and has sharply worn Phenomenon in turn ensures that workpiece meets product technology and want in roughness, in terms of circumferential thickness is poor, radial thickness is poor and bounce stability It asks, simultaneously because the cutting edge quantity alternatively used increases, greatly prolongs cutter life.It can be seen that this is practical It is novel to solve the problems, such as that cutter is sharply worn in automobile brake disc braking surface process, reach and improves product quality, extends The purpose of cutter life.

Detailed description of the invention

Fig. 1 is automobile brake disc braking surface process tool working state schematic representation in the prior art；

Fig. 2 is schematic enlarged-scale view at A in Fig. 1；

Fig. 3 is cutter front end face described in the utility model structural schematic diagram；

Fig. 4 is schematic enlarged-scale view at B in Fig. 3；

Fig. 5 is the in running order schematic diagram of the preferred embodiment in the utility model；

Fig. 6 is schematic enlarged-scale view at C in Fig. 5；

Fig. 7, Fig. 8 are cutting edge roundness handoff procedure schematic diagrames.

Each list of reference numerals in figure are as follows: 1, automobile brake disc, 2, cutter, 2-1,45 o chamferings, 2-2, cutting edge, 3, bushel iron bits, 4, lathe equipments tool apron, 5, cutter holder, 6, pressing plate.

Specific embodiment

With reference to the accompanying drawing and specific embodiment the utility model is described in further detail.

Fig. 1, Fig. 2 are automobile brake disc braking surface process tool working state schematic representation in the prior art in attached drawing, due to It has been described in detail in background technology part, details are not described herein again.

Referring to Fig. 3, Fig. 4, the utility model are a kind of automobile brake disc braking surface process tool, the 2 cutter hub front end of cutter Face is square, at its corner location be equipped with 45o chamfering 2-1, thus form eight (in figure label be, b, c, d, e, f, G, h) small arc-shaped cutting edge 2-2.

Referring to Fig. 4, Fig. 5, automobile brake disc braking surface process tool described in the utility model places it in lathe equipments In the cutter holder 5 of tool apron 4, it is fixed by pressing plate 6.Its preferred embodiment are as follows: the automobile for being 0.3mm for realizing cutting depth The braking surface finishing passes of brake disc 1, the chamfering 2-1 the length of the hypotenuse L=1.14mm, small arc-shaped cutting edge 2-2 radius R= 0.4mm, its bottom edge and workpiece braking surface angle α=5o after cutter 2 is fixed, the cutting edge that works are with adjacent cutting edge vertical range 0.96mm。

Automobile brake disc is carried out using automobile brake disc braking surface process tool described in the utility model referring to Fig. 7, Fig. 8 When 1 braking surface is processed, first cutter 2 can be put into 5 locating slot of cutter holder of lathe equipments tool apron 4, then by pushing down cutter with pressing plate 6 2, the screw of pressing plate 6 is tightened, is fixed on cutter 2 in cutter holder, a cutting edge of cutter 2 is in operating position；In process, After the cutting edge in operating position is worn, successively switch next cutting edge extremely according to sequence (a → b → c → d) is rotated clockwise Operating position；After 2 corner location same side cutting edge (a, b, c, d) of cutter is completely worn out, upper and lower two sets of cutters 2 are exchanged, The processing of automobile brake disc braking surface is carried out using 2 corner location another side cutting edge (e, f, g, h) of cutter；Repeat aforesaid operations Step, until the cutter more renewed after all cutting edges abrasion of cutter 2.

Claims (3)

1. a kind of automobile brake disc braking surface process tool, characterized in that the cutter hub front end face of the cutter (2) is square, It is equipped with 45o chamfering (2-1) at its corner location, forms eight small arc-shaped cutting edges (2-2).

2. automobile brake disc braking surface process tool according to claim 1, characterized in that the cutter (2) is placed in vehicle In the cutter holder (5) of bed apparatus tool apron (4), it is fixed by pressing plate (6).

3. automobile brake disc braking surface process tool according to claim 2, characterized in that the cutter (2) is for real The braking surface finishing passes for the automobile brake disc (1) that existing cutting depth is 0.3mm, chamfering (2-1) the length of the hypotenuse L >= 1.14mm, small arc-shaped cutting edge (2-2) radius R >=0.4mm, its bottom edge and workpiece braking surface angle α=5o, work after cutter (2) is fixed Make cutting edge and adjacent cutting edge vertical range not less than 0.96mm.