CN209664392U - Cylinder cap fuel injector aperture knife tool - Google Patents

Abstract

The utility model belongs to the technical field of cutting tools, and discloses a cutting tool for machining an injector hole of a cylinder head. Its main technical features are: including a knife tail, a knife body and a knife head, and it is characterized in that: the knife head includes a front knife head, a middle knife head and a rear knife head; the middle knife head includes a middle knife head body, at least two The middle blade, the section of the middle cutter head body is gear-shaped, the middle blade is fixed on the middle teeth, and the middle chip flute is formed between the edge side of the middle blade and the adjacent middle teeth, and the middle chip is far away from the middle teeth. The middle tooth on the edge side of the middle blade is notched. One process completes three functions at the same time, which greatly improves the processing efficiency and saves energy. There is a notch on the middle tooth on the side of the blade away from the middle blade, so that under the slope of the middle chip flute on the side of the blade away from the middle blade During the rotation process, the scrap iron scraps are easily discharged, which avoids the scrap iron scraps accumulating between the middle chip removal groove, the cutting edge and the cavity wall, saving energy, and the inner wall surface of the cavity wall is smoother.

Description

Cylinder head injector hole machining tool

technical field

The utility model belongs to the technical field of tools, in particular to a tool for machining a cylinder head injector hole.

Background technique

In the preparation of the cylinder head, the machining of the injector hole on the cylinder head requires the use of end mills, reamers and chamfering tools. First mill the inner wall of the injector hole with an end mill, then expand the round hole to the design size with a reaming knife, and then use a chamfering knife to chamfer the outside of the injector hole. The above-mentioned preparation method has the following defects: firstly, the above-mentioned method requires three processes, the processing efficiency is low, the processing cost is high, and the energy waste is serious; With the shape of "V", the scrap iron is easy to stay in the chip flute, and it is not easy to discharge. There are scratches on the inner wall of the tool, and the finish is poor, which increases the resistance of the tool to rotate, wastes energy, and also causes damage to the tool.

Utility model content

The technical problem to be solved by the utility model is to provide a cylinder head injector hole machining tool with high processing efficiency, low processing cost, low energy consumption, long service life and good surface finish of the inner wall of the cavity wall.

In order to solve the above-mentioned problems, the technical solution adopted by the cylinder head injector hole machining tool of the present invention is as follows: it includes a cutter tail, a cutter body and a cutter head, and is characterized in that: the cutter head comprises a front cutter head, a middle cutter head and a rear cutter head. A cutter head; the front cutter head includes a front cutter head body and at least two front blades, the section of the front cutter head body is gear-shaped, the front blade is fixed on the front teeth, and the front blade is on one side of the blade. A front chip flute is formed between the adjacent front teeth; the middle cutter head comprises a middle cutter head body and at least two middle blades, the cross section of the middle cutter head body is gear-shaped, and the middle blade is fixed in the middle cutter head On the teeth, a middle chip flute is formed between the edge side of the middle blade and the adjacent middle teeth, and there is a gap on the middle tooth on the side away from the blade edge of the middle blade; the back cutter head includes a back cutter A head body and a rear blade, the rear blade is fixed on the rear blade head body, a rear chip flute is formed between the edge side of the rear blade and the adjacent rear teeth, and the rear blade includes a straight blade and an oblique blade.

Its additional technical features are:

There are four front blades and two middle blades.

Compared with the prior art, the tool for machining the cylinder head injector hole provided by the utility model has the following advantages: firstly, since it includes a cutter tail, a cutter body and a cutter head, the cutter head is characterized in that: the cutter head includes a front cutter head, middle cutter head and rear cutter head; the front cutter head comprises a front cutter head body and at least two front blades, the section of the front cutter head body is gear-shaped, and the front blades are fixed on the front teeth, so A front chip flute is formed between the edge side of the front blade and the adjacent front teeth; the middle cutter head comprises a middle cutter head body and at least two middle blades, and the section of the middle cutter head body is gear-shaped, The middle blade is fixed on the middle teeth, a middle chip flute is formed between one side of the blade edge of the middle blade and the adjacent middle teeth, and there is a gap on the middle tooth on the side away from the blade edge of the middle blade; the The rear cutter head includes a rear cutter head body and a rear blade, the rear blade is fixed on the rear cutter head body, and a rear chip flute is formed between the edge side of the rear blade and the adjacent rear teeth, and the rear blade includes Straight blade and oblique blade, in the process of advancing, not only realize the function of end mill, but also can play the function of reaming. Chamfering is formed on the outside, and three functions are completed in one process at the same time, which greatly improves the processing efficiency and saves energy. Under the slope, during the rotation of the tool, the scrap iron scraps are easily discharged, which avoids the scrap iron scraps accumulating between the middle chip flute and the cutting edge and the cavity wall, saving energy, and the inner wall surface of the cavity wall is smoother; , Since there are four front blades and two middle blades, the scrap iron scraps are discharged more thoroughly.

Description of drawings

Fig. 1 is the structural representation of the utility model cylinder head injector hole machining tool;

Fig. 2 is the A-A sectional view of Fig. 1;

FIG. 3 is a B-B sectional view of FIG. 1 .

Detailed ways

The structure and usage principle of the cylinder head injector hole machining tool of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figure 1, Figure 2 and Figure 3, the structural schematic diagram of the cylinder head injector hole machining tool of the present utility model, the utility model cylinder head injector hole machining tool includes a knife tail 1, a knife body 2 and a knife head 3 , the cutter head 3 includes a front cutter head 4, a middle cutter head 5 and a rear cutter head 6; the front cutter head 4 includes a front cutter head body 41 and at least two front blades 42. The section of the front cutter head body 41 is gear-shaped, and the front cutter head The blade 42 is fixed on the front teeth 43 . A front chip flute 45 is formed between the side of the cutting edge 44 of the front insert 42 and the adjacent front teeth. The middle cutter head 5 includes a middle cutter head body 51 and at least two middle cutter blades 52. The cross section of the middle cutter head body 51 is gear-shaped, the middle cutter head 52 is fixed on the middle tooth 53, and the side of the cutter edge 54 of the middle cutter head 52 is adjacent to the middle cutter head 52. A middle chip flute 55 is formed between the middle teeth of the middle blade 52 , and a notch 56 is formed on the middle tooth 53 on the side away from the cutting edge 54 of the middle blade 52 . The back cutter head 6 includes a back cutter head body 61 and a back cutter head 62 , the back cutter head 62 is fixed on the back cutter head body 61 , and a chip removal groove 65 is formed between the side of the cutting edge 63 of the back cutter head 62 and the adjacent back teeth 64 . , the rear blade 6 includes a straight blade 7 and an oblique blade 8 . In the process of advancing, it not only realizes the function of the end mill, but also can play the function of reaming. When the rear blade approaches the surface of the cylinder head, as the tool advances, a chamfer is formed on the outside of the injector hole. The process completes three functions at the same time, the processing efficiency is greatly improved, and the energy is saved. There is a notch on the middle tooth on the side away from the blade edge of the middle blade, so that the scrap iron can be easily discharged during the rotation of the tool under the slope of the middle chip groove on the side away from the blade edge of the middle blade, avoiding the waste iron scrap It accumulates between the middle chip flute and the cutting edge and the cavity wall, saving energy, and the inner wall surface of the cavity wall is smoother.

There are four front blades 42 and two middle blades 52, and the scrap iron scraps are discharged more thoroughly.

The protection scope of the present invention is not limited to the above-mentioned embodiments, as long as the structure is the same as or similar to the structure of the cylinder head injector hole machining tool of the present invention, it falls within the protection scope of the present invention.

Claims (2)

1. a cylinder head injector hole machining tool, comprising a knife tail, a knife body and a knife head, it is characterized in that: the knife head comprises a front knife head, a middle knife head and a rear knife head, The front cutter head includes a front cutter head body and at least two front blades. The cross section of the front cutter head body is gear-shaped, the front blade is fixed on the front teeth, and the blade side of the front blade is adjacent to the front blade. A front chip flute is formed between the front teeth of the The middle cutter head includes a middle cutter head body and at least two middle blades. The cross section of the middle cutter head body is gear-shaped, the middle blade is fixed on the middle teeth, and the edge side of the middle blade is adjacent to the middle blade. A middle chip flute is formed between the middle teeth of the middle blade, and there is a gap on the middle tooth on the side away from the blade edge of the middle blade; The rear cutter head includes a rear cutter head body and a rear blade, the rear blade is fixed on the rear cutter head body, and a rear chip removal groove is formed between the side of the blade edge of the rear blade and the adjacent rear teeth, and the rear blade is fixed on the rear cutter head body. Blades include straight and oblique blades. 2 . The cylinder head injector hole machining tool according to claim 1 , wherein the number of the front blades is four, and the number of the middle blades is two. 3 .