CN212350496U

CN212350496U - Drilling and tapping combined high-performance forming cutter

Info

Publication number: CN212350496U
Application number: CN202021154668.9U
Authority: CN
Inventors: 刘凯强; 孙游; 刘吉庆
Original assignee: HUAWEINA PRECISION TOOLS (KUNSHAN) CO LTD
Current assignee: Jinzhou Jinggong Technology (Kunshan) Co.,Ltd.
Priority date: 2020-06-20
Filing date: 2020-06-20
Publication date: 2021-01-15
Anticipated expiration: 2030-06-20

Abstract

The utility model discloses a drilling and tapping combined high-performance forming cutter, which comprises a cutter handle and a cutter body, wherein the front end of a cutting edge zone close to a tip part is provided with a main cutting edge, so that the front end of the cutter body forms a cutting edge part; the middle part of the blade zone, which is positioned on the blade body, is provided with a plurality of V-shaped grooves which are vertical to the spiral direction of the chip grooves, so that the middle part of the blade body forms a tapping type thread peripheral blade; the tail end of the blade zone close to the knife handle is provided with a step type conical rear knife face, so that the tail end of the blade body forms a chamfer cutting edge. This brill attacks convolution high performance shaping sword is through adopting the syllogic structure on the sword body, and the front end possesses good cutting ability, carries out the screw tap after the middle part is used for the drilling, and the rear end adopts cascaded circular cone back knife face, goes to get chamfer deburring after the processing, promotes the product quality, can be in order to solve drilling, screw tap and the drill way burring problem at a position of product through a cutter, shortens processing cycle, reduces the processing cost.

Description

Drilling and tapping combined high-performance forming cutter

Technical Field

The utility model relates to a shaping cutter especially relates to a bore and attack convolution high performance shaping sword.

Background

Along with the inside complicacy of electronic product constantly promotes, many producers adopt a position of many cutter processing for satisfying the complicated product outward appearance of terminal customer and the demand of quality, and the cutter quantity of accomplishing whole product constantly increases, along with the increase of cutter quantity, also increases thereupon at the tool changing number of times of processing product, not only can improve product processing cycle greatly, can improve product cost expense moreover.

Disclosure of Invention

In order to overcome the defects, the utility model provides a brill is attacked convolution high performance shaping sword reduces the use amount of product cutter in drilling processing, uses a cutter can solve drilling, tapping and drill way unhairing limit scheduling problem at a position, reduces processing cycle and processing cost.

The utility model discloses a solve the technical scheme that its technical problem adopted and be: a drilling and tapping combined high-performance forming cutter comprises a cutter handle and a blade body formed at one end of the cutter handle, wherein a tip is formed at one end face, far away from the cutter handle, of the blade body, three symmetrical spiral chip grooves are formed in the surface of the blade body, a blade zone is arranged between every two adjacent chip grooves, and a main cutting edge is arranged at the front end, close to the tip, of the blade zone so that a cutting blade part is formed at the front end of the blade body; the middle part of the blade zone, which is positioned on the blade body, is provided with a plurality of V-shaped grooves vertical to the spiral direction of the chip discharge grooves, so that the middle part of the blade body forms a tapping type thread peripheral edge; the tail end of the blade zone close to the knife handle is provided with a stepped conical rear knife surface, so that the tail end of the blade body forms a chamfer cutting edge.

As the further improvement of the utility model, three margins are in the sharp drilling position forms flute anterior angle and the radial relief angle of all edges respectively, and this flute anterior angle is 5 ~ 10, and the radial relief angle of all edges is 8 ~ 10.

As a further improvement of the utility model, the helical angle of the chip groove is 25-30 degrees.

As a further improvement of the utility model, the blade zone forms a four-plane type drill point back angle of 10-12 degrees at the point part.

As a further improvement of the utility model, the step type conical rear cutter face is composed of an axial rear angle of 10-12 degrees.

As a further improvement, the diameter of the knife handle is 6-15 mm, and the diameter of the blade body is 4-12 mm.

The utility model has the advantages that: this brill is attacked convolution high performance and is shaped into sword and is cut the chip groove of cutting edge portion and drilling through adopting the syllogic structure on the sword body, the front end, and the middle part is tapping type screw thread week sword, and the end is the chamfer of step circular cone back knife face. The front end possesses good cutting ability, carries out the tap after the middle part is used for the drilling, and the rear end adopts cascaded circular cone back knife face, goes to get chamfer deburring after the processing, promotes the product quality, can shorten processing cycle through drilling, tap and the drill way burring problem at a cutter can solve a position of product, reduction processing cost.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the blade body of the present invention;

FIG. 3 is a schematic view of a partial structure of the present invention;

fig. 4 is the structure diagram of the tip portion of the present invention.

The following description is made with reference to the accompanying drawings:

1-a knife handle; 2-blade body;

3-tip portion; 4-chip groove;

5-edge zone; 6-main cutting edge;

7-V-shaped groove; 8-the flank face;

9-chamfering the cutting edge; 10-flute rake angle;

11-radial relief angle of the peripheral edge; 12-four-plane type drill point back angle;

13-axial relief angle.

Detailed Description

The following description of the preferred embodiments of the present invention will be made in conjunction with the accompanying drawings.

Referring to fig. 1-4, for the utility model, a drilling and tapping combined high performance forming cutter comprises a handle 1 and a blade body 2 formed at one end of the handle, wherein a tip 3 is formed at one end face of the blade body far away from the handle, three symmetrical spiral chip grooves 4 are formed on the surface of the blade body, a blade zone 5 is arranged between two adjacent chip grooves, and a main cutting edge 6 is arranged at the front end of the blade zone close to the tip, so that the front end of the blade body forms a cutting edge part; the middle part of the blade zone, which is positioned on the blade body, is provided with a plurality of V-shaped grooves 7 which are vertical to the spiral direction of the chip grooves, so that the middle part of the blade body forms a tapping type thread peripheral edge; and a stepped conical rear cutter face 8 is arranged at the tail end of the cutting edge zone close to the cutter handle, so that a chamfer cutting edge 9 is formed at the tail end of the cutting edge body.

The edges of three chip grooves of the blade body are provided with arc-shaped blade zones so as to increase the wear resistance during drilling, the three blade zones respectively form a chip groove front angle 10 and a peripheral edge radial rear angle 11 at the tip part, the chip groove front angle 10 is 5-10 degrees, and the peripheral edge radial rear angle 11 is 8-10 degrees. The design of this anterior angle and back angle can realize wear-resisting drilling performance, improves life. The diameter of the blade body is 4-12 mm, and the diameter of the handle is 6-15 mm.

The helical angle of the chip groove is 25-30 degrees, and the blade zone forms a four-plane type drill point back angle 12 of 10-12 degrees at the tip part. The design of reducing the redundant width of the rear end of the cutting edge and removing and the 10-12 degree axial rear angle of the stepped conical rear cutter face 8 at the rear end are formed, so that the cutting capability can be effectively guaranteed, the drilling rigidity can be ensured, the friction between the drilling rigidity and the hole wall can be reduced, and the problems of burrs at the outlet of a hole site after tapping and the like can be avoided.

Therefore, the drilling and tapping combined high-performance forming cutter adopts a three-section structure on the blade body, the front end of the cutting blade body and a drilling chip removal groove are arranged at the front end of the cutting blade body, the middle part of the cutting blade body is a tapping thread peripheral blade, and the tail end of the cutting blade body is a stepped conical rear cutter face chamfer. The front end possesses good cutting ability, carries out the tap after the middle part is used for the drilling, and the rear end adopts cascaded circular cone back knife face, goes to get chamfer deburring after the processing, promotes the product quality, can shorten processing cycle through drilling, tap and the drill way burring problem at a cutter can solve a position of product, reduction processing cost.

In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the invention. The foregoing description is only illustrative of the preferred embodiments of the invention, which can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. All the contents that do not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention all still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a bore and attack convolution high performance shaping sword, includes handle of a knife (1) and forms in sword body (2) of this handle of a knife one end, this sword body is kept away from the terminal surface formation point portion (3) of handle of a knife, sword body surface is equipped with spiral chip groove (4) of three symmetries, is margin (5), its characterized in that between two adjacent chip grooves: the front end of the cutting edge zone close to the tip part is provided with a main cutting edge (6) so that the front end of the edge body forms a cutting edge part; the middle part of the blade zone, which is positioned on the blade body, is provided with a plurality of V-shaped grooves (7) which are vertical to the spiral direction of the chip grooves, so that the middle part of the blade body forms a tapping type thread peripheral edge; the tail end of the cutting edge zone close to the knife handle is provided with a stepped conical rear knife surface (8), so that the tail end of the cutting edge body forms a chamfer cutting edge (9).

2. The drilling and tapping combined high-performance forming cutter according to claim 1, wherein: the three cutting edges respectively form a flute rake angle (10) and a peripheral edge radial relief angle (11) at the drilling position of the tip, the flute rake angle (10) is 5-10 degrees, and the peripheral edge radial relief angle (11) is 8-10 degrees.

3. The drilling and tapping combined high-performance forming cutter according to claim 1, wherein: the helical angle of the chip groove is 25-30 degrees.

4. The drilling and tapping combined high-performance forming cutter according to claim 3, wherein: the blade zone forms a four-plane type drill point back angle (12) of 10-12 degrees at the tip part.

5. The drilling and tapping combined high-performance forming cutter according to claim 1, wherein: the stepped conical relief surface (8) is formed by an axial relief angle (13) of 10-12 degrees.

6. The drilling and tapping combined high-performance forming cutter according to claim 1, wherein: the diameter of the handle is 6-15 mm, and the diameter of the blade body is 4-12 mm.