CN205020957U - Rose reamer - Google Patents

Abstract

The utility model discloses a chamfering knife, which comprises a knife body, the rear end of the knife body is provided with a handle, and the front end of the knife body is provided with two opposite cutting blades, that is, a first cutting blade and a second cutting blade. There is a chip flute between the first cutting edge and the second cutting edge, and chamfering parts are provided on the first cutting edge and the second cutting edge, that is, the first chamfering part and a second chamfered part, the rear end of the first chamfered part is provided with a first chamfered rear corner and a second chamfered rear corner, and the rear end of the second chamfered part is provided with a third chamfered rear corner , the fourth chamfer relief and the fifth chamfer relief. Through the above method, the utility model can not only solve the problem of processing efficiency, but also solve the problem of high-gloss surface, one blade is used for processing high-gloss surface, one blade is used for chamfering, and one-time molding, which solves the problem of processing efficiency and is also beneficial to control Tool vibration.

Description

Chamfering knife

technical field

The utility model relates to the field of cutting tools, in particular to a chamfering knife.

Background technique

With the continuous improvement of the quality of mobile phones, manufacturers have put forward high requirements on the quality and life of tools, and the efficiency of tools in processing has also put forward relatively high requirements. , Special attention is paid to the processing of the metal frame of the fingerprint identification key on the mobile phone. As a frequently touched part, the fingerprint identification key on the mobile phone needs to ensure high precision and smoothness after processing, and the chamfering of the fingerprint identification key Knives not only need to process multiple processes at one time, but also control the vibration of the tool to improve stability and efficiency. The previous high-gloss knives are single-edged, and the machining allowance is very small, which cannot meet the demand.

Utility model content

The technical problem mainly solved by the utility model is to provide a chamfering knife, which can not only solve the problem of processing efficiency, but also solve the problem of high-gloss surface.

In order to solve the above technical problems, a technical solution adopted by the utility model is: provide a chamfering knife, including a knife body, the rear end of the knife body is provided with a handle, and the front end of the knife body is provided with two oppositely arranged The cutting edge, that is, the first cutting edge and the second cutting edge, a chip flute is formed between the first cutting edge and the second cutting edge, and the first cutting edge and the second cutting edge are Both are provided with a chamfer, that is, a first chamfer and a second chamfer, the first chamfer forms an angle of 45° with the longitudinal horizontal plane of the cutter body, and the rear end of the first chamfer There is a first chamfered rear angle and a second chamfered rear angle, the second chamfered part forms an angle of 15° with the longitudinal horizontal plane of the cutter body, and the rear end of the second chamfered part is provided with a third Chamfer relief, 4th chamfer relief, and 5th chamfer relief.

In a preferred embodiment of the present invention, the first cutting edge and the second cutting edge are both arranged at the outer end of the cutter body, and the first cutting edge and the second cutting edge are oppositely arranged .

In a preferred embodiment of the present utility model, the first chamfering relief angle is 9°, and the second chamfering relief angle is 26°.

In a preferred embodiment of the present invention, the third chamfer relief angle is 8°, the fourth chamfer relief angle is 48°, and the fifth chamfer relief angle is 74°.

In a preferred embodiment of the utility model, the total length of the cutter body is 45 mm, and the diameter of the handle is 12 mm.

In a preferred embodiment of the present invention, the handle and the cutting edge are integrally formed, and both the handle and the cutting edge are made of cemented carbide.

The beneficial effects of the utility model are: the utility model can not only solve the problem of processing efficiency, but also solve the problem of high-gloss surface. The cutter body is provided with two center-symmetric cutter teeth, one edge is used for processing It is suitable for chamfering and forming at one time, which solves the problem of processing efficiency and is also beneficial to control the vibration of the tool.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work, wherein:

Fig. 1 is the structural representation of a preferred embodiment of the utility model chamfering knife;

Fig. 2 is a schematic structural view of a preferred embodiment of the cutting edge end face shown;

The marks of each part in the accompanying drawings are as follows: 1. cutter body; 2. knife handle; 3. cutting blade; 301. the first cutting blade; 302. the second cutting blade; Corner; 6, the second chamfer; a, the first chamfer back angle; b, the second chamfer back angle; c, the third chamfer back angle; d, the fourth chamfer back angle; Five chamfer back corners.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1 and Fig. 2, the utility model embodiment comprises:

A chamfering knife, comprising a cutter body, the rear end of the cutter body 1 is provided with a handle 2, and the front end of the cutter body 1 is provided with two oppositely arranged cutting edges 3, that is, a first cutting edge 301 and a second cutting edge Cutting edge 302, a chip flute body 4 is formed between the first cutting edge 301 and the second cutting edge 302, and chamfers are provided on the first cutting edge 301 and the second cutting edge 302 , that is, the first chamfered portion 5 and the second chamfered portion 6, the first chamfered portion 5 forms an angle of 45° with the longitudinal horizontal plane of the cutter body 1, and the rear end of the first chamfered portion 5 is provided There are a first chamfering relief angle a and a second chamfering relief angle b, the second chamfering portion 6 forms an angle of 15° with the longitudinal horizontal plane of the cutter body 1, and the rear end of the second chamfering portion 6 There is a third chamfering relief angle c, a fourth chamfering relief angle d and a fifth chamfering relief angle e.

In addition, the first cutting edge 301 and the second cutting edge 302 are both arranged at the outer end of the cutter body 1 , and the first cutting edge 301 and the second cutting edge 302 are oppositely arranged.

In addition, the first chamfering relief angle a is 9°, and the second chamfering relief angle b is 26°.

In addition, the third chamfer relief angle c is 8°, the fourth chamfer relief angle d is 48°, and the fifth chamfer relief angle e is 74°.

In addition, the total length of the cutter body 1 is 45mm, and the diameter of the cutter handle 2 is 12mm.

In addition, the handle 2 and the cutting edge 3 are integrally formed, and both the handle 2 and the cutting edge 3 are made of cemented carbide.

The working principle of the utility model is that a knife handle 2 is arranged at the rear end of the knife body 1, the total length of the knife body 1 is 45 mm, the diameter of the knife handle 2 is 12 mm, and the front end of the knife body 1 is provided with two oppositely arranged cutting blades 3, namely the first A cutting edge 301 and a second cutting edge 302, the handle 2 and the cutting edge 3 are integrally formed, the handle 2 and the cutting edge 3 are made of hard alloy, the first cutting edge 301 and the second cutting edge 302 are both Located at the outer end of the cutter body 1, the first cutting edge 301 and the second cutting edge 302 are arranged oppositely, a chip flute body 4 is formed between the first cutting edge 301 and the second cutting edge 302, the first cutting edge 301 and the second cutting edge 302 The second cutting edge 302 is provided with chamfering portions, i.e. the first chamfering portion 5 and the second chamfering portion 6, the first chamfering portion 5 forms an angle of 45° with the longitudinal horizontal plane of the cutter body 1, and the first chamfering portion The rear end of the corner part 5 is provided with a first chamfering relief angle a and a second chamfering relief angle b, the first chamfering relief angle a is 9°, the second chamfering relief angle b is 26°, and the second chamfering portion 6 forms an included angle of 15° with the longitudinal horizontal plane of the cutter body 1, and the rear end of the second chamfering portion 6 is provided with a third chamfering relief angle c, a fourth chamfering relief angle d, a fifth chamfering relief angle e, and a third chamfering relief angle e. The chamfering relief angle c is 8°, the fourth chamfering relief angle d is 48°, and the fifth chamfering relief angle e is 74°. The cutter body 1 is provided with two centrally symmetrical cutter teeth, the first cutting edge 301 and The second cutting edge 302, one edge is used for processing the high-gloss surface, and the other edge is used for chamfering, and is formed at one time, which solves the problem of processing efficiency and is also beneficial to control the vibration of the tool.

The above descriptions are only examples of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the utility model description, or directly or indirectly used in other related technologies Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (6)

1. A chamfering knife, comprising a cutter body, is characterized in that, the rear end of the cutter body is provided with a handle, and the front end of the cutter body is provided with two oppositely arranged cutting blades, i.e. the first cutting blade and the second A cutting edge, a chip flute is formed between the first cutting edge and the second cutting edge, and chamfers are provided on the first cutting edge and the second cutting edge, that is, the first chamfer A corner and a second chamfer, the first chamfer and the longitudinal horizontal plane of the cutter body form an angle of 45°, and the rear end of the first chamfer is provided with a first chamfer back angle and a second chamfer Chamfering relief angle, the second chamfering part and the longitudinal horizontal plane of the cutter body form an angle of 15°, the rear end of the second chamfering part is provided with a third chamfering relief angle and a fourth chamfering relief angle and the fifth chamfer relief. 2. The chamfering knife according to claim 1, characterized in that, the first cutting edge and the second cutting edge are all arranged at the outer end of the cutter body, and the first cutting edge and the The second cutting edge is oppositely arranged. 3. The chamfering knife according to claim 1, wherein the first chamfering relief angle is 9°, and the second chamfering relief angle is 26°. 4. The chamfering knife according to claim 1, wherein the third chamfering angle is 8°, the fourth chamfering angle is 48°, and the fifth chamfering angle is 74°. 5. The chamfering knife according to claim 1, characterized in that, the total length of the knife body is 45 mm, and the diameter of the knife handle is 12 mm. 6 . The chamfering knife according to claim 1 , wherein the knife handle and the cutting edge are integrally formed, and both the knife handle and the cutting edge are made of cemented carbide. 7 .