CN211331612U

CN211331612U - Countersunk head chamfer sword of multipurpose

Info

Publication number: CN211331612U
Application number: CN201921628861.9U
Authority: CN
Inventors: 方思棋; 李智林; 杨肖
Original assignee: Guangdong Dingtai Hi Tech Precision Technology Co ltd
Current assignee: Guangdong Dingtai Hi Tech Co., Ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-08-25
Anticipated expiration: 2029-09-27

Abstract

The utility model belongs to the technical field of the cutter, concretely relates to countersunk head chamfer sword of multipurpose, including hilt portion and tool bit portion, hilt portion with the tool bit portion is connected, the tool bit portion is provided with sword groove and cutting edge, the guide slot with the cutting edge is adjacent to be set up, the tip of tool bit portion is sharp toper. In practice, the diameter of the circumcircle of the tool head portion is preferably larger than the diameter of the tool shank portion in design; in operation, the pointy conical sword head portion can carry out the chamfer to the hole of multiple specification, and the sword head portion can sink into downthehole processing simultaneously, and cutting edge sound construction, job stabilization, the piece that produces in the course of working in time discharges through the sword groove to in the continuation of processing goes on, this chamfer sword simple structure, convenient to use, work efficiency is high, and the practicality is strong.

Description

Countersunk head chamfer sword of multipurpose

Technical Field

The utility model belongs to the technical field of the cutter, concretely relates to countersunk head chamfer sword of multipurpose.

Background

At present, in the field of mechanical processing, a drill bit is generally adopted for processing holes, then a cutter is used for chamfering by rotating a cutter rest or a special chamfering cutter is used for chamfering, and the structure of the cutter plays an important role in the processing efficiency.

In the prior art, the chamfering tool can only be used for processing burrs and chamfers at the edges of the PCB and the hole edges, cannot be directly sunk into the hole for processing, and can be used with other tools; and when the countersunk head is processed, the problem of hole explosion easily occurs, so that the defect rate is high, the processing technology is complex, the efficiency is low, the cost is high, and the development of enterprises is not facilitated.

In view of the above, the related art needs to be perfected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: aiming at the defects of the prior art, the multipurpose countersunk head chamfer cutter can be sunk into a hole for processing, and hole explosion caused by poor cutting cannot be caused; the problem of downthehole processing of PCB board is solved, also can carry out conventional flange limit processing simultaneously, and save the processing cost, simplified processing technology, reduced the processing risk of makeing mistakes, improved machining efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the multipurpose countersunk head chamfering tool comprises a tool shank part and a tool head part, wherein the tool shank part is connected with the tool head part, the tool head part is provided with a tool groove and a cutting edge, a guide groove is adjacent to the cutting edge, and the end part of the tool head part is in a pointed cone shape. In practice, the diameter of the circumcircle of the tool head portion is preferably larger than the diameter of the tool shank portion in design; in operation, the pointy conical sword head portion can carry out the chamfer to the hole of multiple specification, and the sword head portion can sink into downthehole processing simultaneously, and cutting edge sound construction, job stabilization, the piece that produces in the course of working in time discharges through the sword groove to in the continuation of processing goes on, this chamfer sword simple structure, convenient to use, work efficiency is high, and the practicality is strong.

As an improvement of the multi-purpose countersunk head chamfer cutter, the shearing angle of the cutting edge is 9 to 11 degrees. The structural design increases the shearing force of the cutting edge in the machining process.

As an improvement of the multi-purpose countersunk head chamfer cutter, the chamfer relief angle of the cutting edge is 16 degrees to 20 degrees. This structural design increases the mechanical strength and sharpness of the edge.

As an improvement of the countersunk head chamfer cutter of the multipurpose, the peripheral edge relief angle of the cutting edge includes a first relief angle and a second relief angle.

As an improvement of the multi-purpose countersunk head chamfer cutter of the present invention, the first relief angle is 14 to 16 °. The structure design is beneficial to increasing the mechanical strength and sharpness of the cutting edge and reducing the friction force of the cutting edge during processing.

As an improvement of the multi-purpose countersunk head chamfer cutter of the present invention, the second relief angle is 27 to 33 °. This structural design is advantageous for increasing the mechanical strength of the blade.

As an improvement of the multi-purpose countersunk head chamfer cutter of the utility model, the point angle of the cutter head part is 30-160 degrees. The structural design enables the knife to meet the requirements of customers.

As an improvement of the multi-purpose countersunk head chamfer cutter, the length of the cutter groove is greater than that of the cutting edge. The structure design is beneficial to timely discharging of scraps in the machining process.

As an improvement of the multi-purpose countersunk head chamfer cutter of the utility model, the number of the cutter grooves is the same as that of the cutting edges. The structural design is beneficial to increasing the stability of the work.

As an improvement of the multi-purpose countersunk head chamfer cutter, the cutter groove is provided with at least 2 cutting edges. The structural design is beneficial to increasing the working efficiency.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a schematic structural view of a main view in an embodiment of the present invention;

FIG. 2 is a partial sectional view of the plane A-A in FIG. 1;

fig. 3 is a schematic side view of an embodiment of the present invention;

FIG. 4 is a partial sectional view of the plane B-B in FIG. 3;

wherein: 1-a handle portion; 2-the cutter head part; 21-a knife slot; 22-a blade edge; 3-shear angle; 4-chamfering the relief angle; 5-peripheral edge relief angle; 51-first relief angle; 52-second relief angle; 6-point angle.

Detailed Description

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The present invention will be described in further detail with reference to the accompanying drawings, which are not intended to limit the present invention.

Examples

As shown in fig. 1 to 4, the multipurpose countersunk head chamfer cutter comprises a cutter handle part 1 and a cutter head part 2, wherein the cutter handle part 1 is connected with the cutter head part 2, the cutter head part 2 is provided with a cutter groove 21 and a cutter edge 22, a guide groove is arranged adjacent to the cutter edge 22, and the end part of the cutter head part 2 is in a pointed cone shape. In practical applications, the diameter of the circumcircle of the tool head portion 2 is preferably larger than the diameter of the tool shank portion 1 in design; in operation, sharp conical tool bit portion 2 can carry out the chamfer to the hole of multiple specification, and tool bit portion 2 can sink into downthehole processing simultaneously, and cutting edge 22 sound construction, job stabilization, the piece that produces in the course of working in through sword groove 21 in time discharges to in going on of processing continuously, this chamfer sword simple structure, convenient to use, work efficiency is high, and the practicality is strong.

Preferably, the cutting edge 22 has a shear angle 3 of 9 to 11. This design increases the shear strength of blade 22 during machining.

Preferably, the chamfer relief angle 4 of the cutting edge 22 is 16 ° to 20 °. This structural design increases the mechanical strength and sharpness of the edge 22.

Preferably, the peripheral edge relief angle 5 of the blade 22 includes a first relief angle 51 and a second relief angle 52.

Preferably, the primary relief angle 51 is 14 ° to 16 °. This structural design is beneficial for increasing the mechanical strength and sharpness of the edge 22.

Preferably, the secondary relief angle 52 is 27 ° to 33 °. This structural design is beneficial for increasing the mechanical strength of blade 22.

Preferably, the point angle 6 of the tool head 2 is 30 ° to 160 °. This design provides a strong, stable and efficient blade 22.

Preferably, the length of the pocket 21 is greater than the length of the blade edge 22. The structure design is beneficial to timely discharging of scraps in the machining process.

Preferably, the number of sipes 21 is the same as the number of cutting edges 22. The structural design is beneficial to increasing the stability of the work.

Preferably, the number of the sipes 21 and the blade edges 22 is at least 2. The structural design is beneficial to increasing the working efficiency.

The utility model discloses a theory of operation is: in operation, sharp conical tool bit portion 2 can carry out the chamfer to the hole of multiple specification, and tool bit portion 2 can sink into downthehole processing simultaneously, and cutting edge 22 sound construction, job stabilization, the piece that produces in the course of working in through sword groove 21 in time discharges to in going on of processing continuously, this chamfer sword simple structure, convenient to use, work efficiency is high, and the practicality is strong.

While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The utility model provides a countersunk head chamfer sword of multipurpose which characterized in that: the tool comprises a tool shank portion (1) and a tool head portion (2), wherein the tool shank portion (1) is connected with the tool head portion (2), the tool head portion (2) is provided with a tool groove (21) and a cutting edge (22), the tool groove (21) is arranged adjacent to the cutting edge (22), the end portion of the tool head portion (2) is in a pointed conical shape, a peripheral edge relief angle (5) of the cutting edge (22) comprises a first relief angle (51) and a second relief angle (52), the first relief angle (51) is 14-16 degrees, and the second relief angle (52) is 27-33 degrees.

2. The multi-purpose countersunk head chamfer cutter according to claim 1, wherein: the cutting angle (3) of the cutting edge (22) is 9-11 degrees.

3. The multi-purpose countersunk head chamfer cutter according to claim 1, wherein: the chamfer angle (4) of the cutting edge (22) is 16-20 degrees.

4. The multi-purpose countersunk head chamfer cutter according to claim 1, wherein: the point angle (6) of the tool bit part (2) is 30-160 degrees.

5. The multi-purpose countersunk head chamfer cutter according to claim 1, wherein: the length of the knife groove (21) is larger than that of the knife edge (22).

6. The multi-purpose countersunk head chamfer cutter according to claim 1, wherein: the number of the knife grooves (21) is the same as that of the knife edges (22).

7. The multi-purpose countersunk head chamfer cutter according to claim 6, wherein: the number of the knife grooves (21) and the knife edges (22) is at least 2.