CN216502574U

CN216502574U - High-speed whirlwind milling cutter

Info

Publication number: CN216502574U
Application number: CN202122577198.8U
Authority: CN
Inventors: 丁黎军; 金登岳
Original assignee: Suzhou Guanzuan Precision Tools Co ltd
Current assignee: Suzhou Guanzuan Precision Tools Co ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-05-13
Anticipated expiration: 2031-10-26

Abstract

The utility model discloses a high-speed cyclone milling cutter. The high-speed cyclone milling cutter comprises: the stalk portion, follow the neck that the stalk portion axial direction extends and follow the cutting portion that the neck axial direction extends, the cutting portion is provided with one or more cutting edge along axial circumferencial direction, wherein the tip of cutting edge is the arc surface, in order to reduce the cutting edge with treat the area of contact of machined part, and the center department of cutting portion forms to the sunken end cutting chip heart groove of neck direction. According to the high-speed cyclone milling cutter provided by the utility model, the bottom of the cutter is an arc surface, so that the contact area is small, the vibration is reduced, the processing speed is high, the cutting rate is high, and the service life of the cutter is long; the chip removal speed is accelerated by arranging the groove at the tail part of the cutting part and the chip removal core groove of the bottom blade.

Description

High-speed whirlwind milling cutter

Technical Field

The utility model relates to a milling cutter, in particular to a high-speed cyclone milling cutter, and belongs to the technical field of milling cutter design and manufacture.

Background

In the current machining, more and more novel materials, such as composite engineering plastics, composite alloy materials, special fiber materials and the like, need to improve the machining efficiency, and the service life of the cutter needs to be prolonged. The general cutter not only has small cutting amount and low processing speed, but also has short service life and poor processed surface roughness. The main performance is that the chip removal and the wear resistance of the cutter during high-speed feeding and the reverse acting force of the processed product to the cutter can cause the cutter and the workpiece to generate resonance. Therefore, the machining efficiency of the cutter is low, the service life of the cutter is short, and in the machining process, the slow chip removal is also the reason of further low machining efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-speed cyclone milling cutter to overcome the defects in the prior art.

In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model comprises the following steps: the embodiment of the utility model provides a high-speed cyclone milling cutter. The high-speed cyclone milling cutter comprises: the stalk portion, follow the neck that the stalk portion axial direction extends and follow the cutting portion that the neck axial direction extends, the cutting portion is provided with one or more cutting edge along axial circumferencial direction, wherein the tip of cutting edge is the arc surface, in order to reduce the cutting edge with treat the area of contact of machined part, and the center department of cutting portion forms to the sunken end cutting chip heart groove of neck direction.

Preferably, one side of the cutting edge forms an arc-shaped rake face; the other side of the cutting edge forms a supporting knife back; and a cutting part tail groove is formed between the rake face of one cutting edge and the back face of the other cutting edge of two adjacent cutting edges.

Preferably, the width of the cutting portion tail groove is gradually reduced along a first direction from the cutting portion to the shank portion.

Preferably, a bottom edge arc first relief angle and a bottom edge arc second relief angle are left at the bottom of the cutting edge.

Preferably, the first relief angle of the bottom edge arc is 6-20 °.

Preferably, the second relief angle of the bottom edge arc is 10-30 °.

Preferably, the cutting edge side edge forms a peripheral edge taper first relief angle and a peripheral edge taper second relief angle.

Preferably, the peripheral edge is tapered by a first relief angle of 6 ° to 20 °.

Preferably, the peripheral edge taper secondary relief angle is 15-30 °.

Preferably, the cutting portion bottom portion forms a bottom edge clearance angle, and the axial angle of the bottom edge clearance angle is 15 ° to 50 °.

Preferably, the shank and neck are cylindrical and the neck diameter is less than the shank diameter.

Preferably, the diameter of the cutting portion gradually increases from a second direction, which is a direction from the shank portion to the cutting portion.

Compared with the prior art, the utility model has the advantages that:

1. according to the high-speed cyclone milling cutter provided by the embodiment of the utility model, the bottom of the cutter is an arc surface, the contact area is small, the vibration is reduced, the processing speed is high, the cutting rate is high, and the service life of the cutter is long.

2. The high-speed cyclone milling cutter provided by the embodiment of the utility model is provided with the tail groove of the cutting part and the bottom edge chip removal core groove to accelerate the chip removal speed.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a front view of a high speed cyclone milling cutter provided in an exemplary embodiment of the present invention;

FIG. 2 is an enlarged view of a cutting portion of a high speed cyclone milling cutter provided in an exemplary embodiment of the present invention;

FIG. 3 is a schematic structural view of a high-speed cyclone milling cutter provided in an exemplary embodiment of the present invention;

description of reference numerals:

1. milling cutters; 2. a handle; 3. a neck portion; 4. a blade part; 5. a groove at the tail part of the blade part; 6. a bottom blade arc rake face; 7. a bottom edge arc knife edge; 8. the peripheral edge supports the knife back; 9. bottom edge gash angle; 10. a bottom edge arc second relief angle; 11. a bottom edge arc first relief angle; 12. the peripheral edge is tapered to a first relief angle; 13. the peripheral edge is provided with a second back angle; 14. a chip removal core groove of the bottom blade; 19. a bottom edge pocket.

Detailed Description

In view of the deficiencies in the prior art, the inventors of the present invention have made extensive studies and extensive practices to provide technical solutions of the present invention. The technical solution, its implementation and principles, etc. will be further explained as follows.

Referring to fig. 1, in the high-speed cyclone milling cutter provided by the present embodiment, the milling cutter 1 includes a shank portion 2, a neck portion 3 extending from the shank portion 2 in an axial direction, and a cutting portion 4 extending from the neck portion 3 in the axial direction, the cutting portion 4 is provided with one or more cutting edges along an axial circumferential direction, wherein an end portion of the cutting edge is an arc surface to reduce a contact area between the cutting edge and a workpiece to be machined, and a bottom edge chip removal core groove 14 recessed toward the neck portion 3 is formed at a center of the cutting portion 4.

Specifically, the end part of the cutting edge is an arc surface instead of a plane, so that the contact area of the cutting edge and a workpiece to be machined can be effectively reduced, and the vibration during use is reduced.

Particularly, the milling cutter designed in the way has the advantages of high processing speed, high cutting efficiency and capability of prolonging the service life of the cutter.

Specifically, the neck 3 is arranged on the milling cutter 1, so that the milling cutter 1 is not contacted with a workpiece except the cutting part 4 in the machining process.

Specifically, a bottom blade chip removal core groove 14 which is concave towards the neck 3 is formed in the center of the cutting part 4, and a chip containing space is increased in the center of the bottom blade chip removal core groove 14.

Specifically, a bottom blade groove 19 is provided around the bottom blade chip discharging core groove 14 for accelerating chip discharging.

Specifically, the bottom of the cutting part 4 forms a bottom edge arc knife edge 7.

In the embodiment, one side of the cutting edge forms an arc-shaped rake face; the other side of the cutting edge forms a supporting knife back; and a cutting part tail groove is formed between the rake face of one cutting edge and the back face of the other cutting edge of two adjacent cutting edges.

Specifically, the front knife face with the arc-shaped cutting edge formed on one side is a bottom edge arc-shaped front knife face 6, and the back knife face with the supporting knife back face formed on the other side is a peripheral edge supporting knife back 8. The peripheral edge support tool back 8 supports the whole milling cutter, so that chips can be smoothly discharged.

Specifically, two adjacent cutting edges one the rake face of cutting edge with another form cutting part afterbody slot 5 between the back of the knife face of cutting edge, wherein, cutting part afterbody slot 5's shape is similar to the dovetail, when guaranteeing to increase milling cutter structural strength, accelerates the chip removal.

In this embodiment, the width of the cutting portion tail groove is gradually reduced along a first direction from the cutting portion to the shank portion.

In this embodiment, a bottom edge arc first relief angle 11 and a bottom edge arc second relief angle 10 are left at the bottom of the cutting edge.

Specifically, the primary function of the bottom edge arc first relief angle 11 is for cutting, and the bottom edge arc second relief angle 10 is for transitional chip removal and support of the bottom edge arc first relief angle 11.

In this embodiment, the first arc relief angle 11 of the bottom edge is 6 ° to 20 °.

Specifically, the angle range of the first relief angle 11 of the bottom edge arc is 6-20 °. The bottom edge arc first relief angle 11 of less than 6 ° may result in insufficient cutting sharpness of the milling cutter; if the first relief angle 11 is greater than 20 deg., overall tool wear is accelerated.

In this embodiment, the second relief angle 10 of the bottom edge arc is 10 ° to 30 °.

Specifically, the angle range of the bottom edge arc secondary relief angle 10 is 10-30 °. The end blade arc second relief angle 10 being less than 10 ° can lead to the chip removal to be unsmooth, and the end blade arc second relief angle 10 being higher than 30 ° can lead to milling cutter bulk strength not enough.

In this embodiment, the side edge of the cutting edge forms a peripheral edge taper first relief angle 12 and a peripheral edge taper second relief angle 13.

Specifically, the peripheral edge taper first relief angle 12 is used for cutting a workpiece to be machined, and the peripheral edge taper second relief angle 13 is used for transition chip removal of the peripheral edge taper first relief angle 12 and support of the peripheral edge taper first relief angle 12.

In this embodiment, the peripheral edge taper primary relief angle 12 is 6 ° to 20 °.

Specifically, the primary function of the peripheral edge taper primary relief angle 12 is for cutting. Wherein, the first taper clearance angle 12 of the peripheral edge is 6 degrees to 20 degrees, if the first taper clearance angle 12 of the peripheral edge is less than 6 degrees, the workpiece to be machined can not be cut; if the peripheral edge taper secondary relief angle is larger than 20 degrees, the abrasion of the milling cutter 1 is accelerated, and the service life of the milling cutter 1 is shortened.

In the embodiment, the secondary relief angle 13 of the peripheral edge taper is 15-30 degrees.

Specifically, the peripheral edge taper second relief angle 13 is used for transition chip removal of the peripheral edge taper first relief angle 12 and support of the peripheral edge taper first relief angle 12. The secondary peripheral edge taper relief angle 13 is 15-30 degrees, wherein if the secondary peripheral edge taper relief angle 13 is lower than 15 degrees, the chip removal is not smooth; if the peripheral edge taper secondary relief angle 13 is higher than 30 deg., it may result in insufficient overall strength of the milling cutter 1.

In the embodiment, the bottom of the cutting part 4 forms a bottom blade clearance angle 9, and the axial angle of the bottom blade clearance angle 9 is 15-50 degrees.

In particular, the bottom edge clearance angle 9 serves to accelerate chip removal. Wherein the axial angle of the bottom blade clearance angle 9 is 15-50 degrees, if the axial angle of the bottom blade clearance angle 9 is lower than 15 degrees, the chip removal space is small, the blockage is caused, and the chip removal effect is poor. If the axial angle of the end edge clearance angle 9 is greater than 50 deg., this results in accelerated wear of the end edge and insufficient strength.

In this embodiment, the handle and neck are cylindrical and the neck diameter is less than the handle diameter.

In this embodiment, the diameter of the cutting portion gradually increases from the second direction, which is the direction from the shank portion to the cutting portion.

It should be understood that the above-mentioned embodiments are merely illustrative of the technical concepts and features of the present invention, which are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and therefore, the protection scope of the present invention is not limited thereby. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A high-speed cyclone milling cutter characterized by comprising: the stalk portion, follow the neck that the stalk portion axial direction extends and follow the cutting portion that the neck axial direction extends, the cutting portion is provided with one or more cutting edge along axial circumferencial direction, wherein the tip of cutting edge is the arc surface, in order to reduce the cutting edge with treat the area of contact of machined part, and the center department of cutting portion forms to the sunken end cutting chip heart groove of neck direction.

2. The high-speed cyclone milling cutter according to claim 1, wherein: one side of the cutting edge forms an arc-shaped front tool face; the other side of the cutting edge forms a supporting knife back; and a cutting part tail groove is formed between the rake face of one cutting edge and the back face of the other cutting edge of two adjacent cutting edges.

3. The high-speed cyclone milling cutter according to claim 2, wherein: the width of the cutting portion tail groove is gradually reduced along a first direction, and the first direction is a direction from the cutting portion to the shank portion.

4. The high-speed cyclone milling cutter according to claim 2, wherein: and a bottom blade arc first relief angle and a bottom blade arc second relief angle are reserved at the bottom of the cutting blade.

5. The high-speed cyclone milling cutter according to claim 4, wherein: the first relief angle of the bottom edge arc is 6-20 degrees.

6. The high-speed cyclone milling cutter according to claim 4, wherein: the second relief angle of the bottom edge arc is 10-30 degrees.

7. The high-speed cyclone milling cutter according to claim 2, wherein: the side edge of the cutting edge forms a first back angle of the taper of the peripheral edge and a second back angle of the taper of the peripheral edge.

8. The high-speed cyclone milling cutter according to claim 7, wherein: the first back angle of the peripheral edge taper is 6-20 degrees; and/or the peripheral edge taper secondary relief angle is 15-30 degrees.

9. The high-speed cyclone milling cutter according to claim 1, wherein: the bottom of the cutting part forms a bottom blade tooth clearance angle, and the axial angle of the bottom blade tooth clearance angle is 15-50 degrees.

10. The high-speed cyclone milling cutter according to claim 1, wherein: the handle and neck are cylindrical, and the neck diameter is less than the handle diameter; and/or the diameter of the cutting part is gradually increased from a second direction, wherein the second direction is the direction from the handle part to the cutting part.