CN212042847U

CN212042847U - Four-edge milling cutter

Info

Publication number: CN212042847U
Application number: CN202020433345.7U
Authority: CN
Inventors: 陈朋跃; 钟华山
Original assignee: Shenzhen Xinjinquan Precision Technology Co Ltd
Current assignee: Shenzhen Xinjinquan Precision Technology Co ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-12-01
Anticipated expiration: 2030-03-30

Abstract

The utility model relates to a four-blade milling cutter, including installing handle of a knife, transition pole and the tool bit on the collet chuck, be equipped with four on the tool bit and be spiral helicine side cutting sword, the one end of tool bit still is equipped with the end sword, the other end of tool bit and the one end body coupling of transition pole to and form convex turning between the transition pole, the other end of transition pole and the one end body coupling of handle of a knife, the other end radius angle of handle of a knife. Through circular arc corner transition, prevent that the tool bit from appearing stress concentration at the in-process corner of high-speed cutting, lead to the problem of rupture. In addition, the other end of the transition rod is integrally connected with one end of the handle, the other end of the handle is rounded, and when the handle is clamped in the collet chuck, the rounded angle can reduce friction between the handle and the collet chuck, prolong the service life of the collet chuck and save cost.

Description

Four-edge milling cutter

Technical Field

The utility model relates to a cutter technical field, especially a four-blade milling cutter.

Background

The milling cutter is a common tool in the field of mechanical production and machining, the service life of a cutter, the surface quality of a machined workpiece and the machining stability are main factors for measuring the performance of the cutter, and the performance of the cutter is mainly determined by the structural parameters of the cutter except for the relation with the material of the cutter. The milling cutter is generally fixed by a collet chuck to rotate at a high speed, and the existing four-edge milling cutter with a small diameter has the problems that the transition is not smooth enough in structure, the stress is easy to concentrate, and the fracture is easy to occur in the process of processing a workpiece at a high speed.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in providing a four-blade milling cutter, aim at solving the less milling cutter of current diameter and add man-hour, the problem of easy rupture.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a four-blade milling cutter, is including installing handle of a knife, transition pole and the tool bit on the collet chuck, be equipped with four on the tool bit and be spiral helicine side cutting edges, the one end of tool bit still is equipped with the end sword, the other end of tool bit and the one end body coupling of transition pole to and transition pole between form convex turning, the other end of transition pole and the one end body coupling of handle of a knife, the other end radius angle of handle of a knife.

Further, the helix angle of the side cutting edge is 21 °.

Furthermore, the transition rod is in a round table shape, the bottom surface with the larger area on the round table is connected with the cutter handle, and the top surface with the smaller area is connected with the cutter head.

Further, the diameter of the tool shank is eight times the diameter of the tool bit.

Further, the surface of the end blade is plated with a titanium alloy layer.

Compared with the prior art, the utility model provides a pair of four-blade milling cutter, the other end of tool bit and the one end body coupling of transition pole to and form convex turning between the transition pole, pass through the transition of circular arc turning, prevent that the tool bit from stress concentration appearing in the in-process corner of high-speed cutting, lead to the problem of rupture. In addition, the other end of the transition rod is integrally connected with one end of the handle, the other end of the handle is rounded, and when the handle is clamped in the collet chuck, the rounded angle can reduce friction between the handle and the collet chuck, prolong the service life of the collet chuck and save cost.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic structural diagram of a four-edge milling cutter provided by the present invention;

fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Detailed Description

The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the utility model provides a four-edge milling cutter, including installing handle of a knife 10, transition pole 20 and the tool bit 30 on collet chuck (not shown), be equipped with four on the tool bit 30 and be spiral helicine side cutting edge 31, the one end of tool bit 30 still is equipped with end edge 32, the other end of tool bit 30 and the one end body coupling of transition pole 20 to and transition pole 20 between form convex turning 1, the other end of transition pole 20 and the one end body coupling of handle of a knife 10, the other end radius angle 2 of handle of a knife 10. Through the circular arc corner transition, prevent that tool bit 30 from appearing stress concentration in the in-process corner of high-speed cutting, lead to the problem of rupture. In addition, the other end of the transition rod 20 is integrally connected with one end of the tool handle 10, the other end of the tool handle 10 is rounded, and when the tool handle 10 is clamped in the collet chuck, the friction between the tool handle 10 and the collet chuck can be reduced through the rounded corners, so that the service life of the collet chuck is prolonged, and the cost is saved.

In the present embodiment, the helix angle of the side cutting edge 31 is 21 °, so that the wear on the tool when discharging chips is reduced, which is beneficial to protecting the tool bit 30 and prolonging the service life.

Further, the transition rod 20 is in a circular truncated cone shape, the bottom surface with a larger area on the circular truncated cone is connected with the tool shank 10, and the top surface with a smaller area is connected with the tool bit 30. Specifically, the diameter of the shank 10 is eight times the diameter of the cutting head 30, and since the diameter of the cutting head 30 is smaller, the diameter of the shank 10 is increased to fix the shank 10. The titanium alloy layer is plated on the surface of the end blade 32, so that the strength of the end blade can be improved, and the service life of the end blade can be prolonged.

It should be understood that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some technical features; and all such modifications and alterations should fall within the scope of the appended claims.

Claims

1. The utility model provides a four-edge milling cutter, its characterized in that, is including installing handle of a knife, transition pole and the tool bit on the collet chuck, be equipped with four on the tool bit and be spiral helicine side cutting edges, the one end of tool bit still is equipped with the end sword, the other end of tool bit and the one end body coupling of transition pole to and transition pole between form convex turning, the other end of transition pole and the one end body coupling of handle of a knife, the other end radius angle of handle of a knife.

2. A four-edged milling cutter as claimed in claim 1, characterized in that the helix angle of the side cutting edges is 21 °.

3. The four-edged milling cutter as claimed in claim 2, wherein the transition bar is in the form of a circular truncated cone, the bottom surface of the circular truncated cone having a larger area being connected to the shank and the top surface of the circular truncated cone having a smaller area being connected to the cutting head.

4. A four-edged milling cutter as claimed in claim 3, wherein the shank has a diameter eight times the diameter of the cutting head.

5. The four-edge milling cutter according to claim 4, wherein the surface of the end edge is plated with a titanium alloy layer.