CN202667762U

CN202667762U - Three-edge milling cutter for shell machining

Info

Publication number: CN202667762U
Application number: CN 201220151096
Authority: CN
Inventors: 徐斌斌; 徐文伟
Original assignee: CHANGZHOU HUAHUI YONGXIANG METAL PRODUCT Co Ltd
Current assignee: CHANGZHOU HUAHUI YONGXIANG METAL PRODUCT Co Ltd
Priority date: 2012-04-11
Filing date: 2012-04-11
Publication date: 2013-01-16
Anticipated expiration: 2022-04-11

Abstract

The utility model belongs to the field of cutting tools of a machine tool, and particularly relates to a three-edge milling cutter for shell machining. The three-edge milling cutter for shell machining comprises a cutter handle and a cutter head, a spiral scrap discharge groove and clear edges are arranged on the surrounding face of the cutter head, three cutting edges are arranged on the end face of the cutter head, the cutter edges comprise cutter teeth, the helical angle of the clear edges is 38 degrees, the clear edges comprises a circular arc clear edge and a planarea clear edge, the relief angle of the circular arc clear edges is 15 degrees, and the width of the circular arc clear edge is 0.56 millimeter, the relief angle of the planarea clear edge is 23 degrees, and the width of the straight line clear edge is 0.89 millimeter. The three-edge milling cutter for shell machining has the advantages of improving the durability of the milling cutter and being high in degree of finish of products such as mobile phone shells, notebook computer shells and high in smoothness of a lens surface.

Description

Processing housing three blade milling cutters

Technical field

The utility model belongs to machine cut cutter field, specifically a kind of processing housing three blade milling cutters.

Background technology

Existing milling cutter versatility is stronger, chip removal ability is poor when mobile phone shell, computer notebook housing are carried out Milling Process, milling cutter construction arranges unreasonable, milling cutter is short service life, still there is not at present the special milling cutter of processing for mobile phone shell, computer notebook housing, because the milling cutter processing of mobile phone shell, computer notebook housing is often adding man-hour because existing Design Milling defective, and the mobile phone shell after causing processing, computer notebook housing burr are many, can not meet customer need.

Summary of the invention

The utility model proposes a kind of processing housing three blade milling cutters that are specifically designed to processing mobile phone shell, computer notebook housing for the weak point that exists in the above-mentioned technology.

The utility model provides following technical scheme:

Processing housing three blade milling cutters, it comprises handle of a knife and cutter head, has helical flute and clear limit on the side face of cutter head, have three cutting edges on the end face of cutter head, cutting edge comprises cutting, and the helical angle on described clear limit is 38 °, and it comprises the clear limit of circular arc and the clear limit of planarea; The relief angle on the clear limit of circular arc is 15 °, and wide is 0.56mm; The relief angle on the clear limit of planarea is 23 °, and wide is 0.89mm.

The cutting anterior angle of described cutting edge is 6 °; The cutting side is provided with the first knife face and the second knife face, and the first knife face width is 0.8mm, and its relief angle is 12 °; The relief angle of the second knife face is 13 °.

The thick internal diameter of described cutter head core is 3.28mm, and external diameter is 6.72mm.

It is 42 ° that the cutting of described cutting edge enters the angle, and clearance angle is 1.6 °, relief width 0.2mm.

The utility model has the advantages that the durability that has improved milling cutter, the product glossiness such as the mobile phone shell that processes, computer notebook housing are high, high light microscopic face.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is that the A of Fig. 1 is to schematic diagram;

Fig. 3 is that the B-B of Fig. 1 is to schematic diagram;

Fig. 4 is that the C-C of Fig. 2 is to schematic diagram.

The specific embodiment

Such as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, processing housing three blade milling cutters, it comprises handle of a knife 1 and cutter head 2, have helical flute 3 and clear limit 4 on the side face of cutter head 2, have three cutting edge 2a on the end face of cutter head 2, cutting edge 2a comprises cutting 2aa, and the helical angle on described clear limit 4 is 38 °, and it comprises the clear limit 4a of circular arc and the clear limit 4b of planarea; The relief angle of the clear limit 4a of circular arc is 15 °, and wide is 0.56mm; The relief angle of the clear limit 4b of planarea is 23 °, and wide is 0.89mm; It is 42 ° that the cutting 2aa of cutting edge enters the angle, and clearance angle is 1.6 °, relief width 0.2mm.

The cutting 2aa anterior angle of described cutting edge is 6 °; The cutting side is provided with the first knife face 2b and the second knife face 2c, and the first knife face 2b width is 0.8mm, and its relief angle is 12 °; The relief angle of the second knife face 2c is 13 °.

Claims

1. process housing three blade milling cutters, it comprises handle of a knife and cutter head, has helical flute and clear limit on the side face of cutter head, have three cutting edges on the end face of cutter head, cutting edge comprises cutting, it is characterized in that: the helical angle on described clear limit is 38 °, and it comprises the clear limit of circular arc and the clear limit of planarea; The relief angle on the clear limit of circular arc is 15 °, and wide is 0.56mm; The relief angle on the clear limit of planarea is 23 °, and wide is 0.89mm.

2. processing housing three blade milling cutters according to claim 1, it is characterized in that: the cutting anterior angle of described cutting edge is 6 °; The cutting side is provided with the first knife face and the second knife face, and the first knife face width is 0.8mm, and its relief angle is 12 °; The relief angle of the second knife face is 13 °.

3. processing housing three blade milling cutters according to claim 1, it is characterized in that: the thick internal diameter of described cutter head core is 3.28mm, and external diameter is 6.72mm.

4. processing housing three blade milling cutters according to claim 1, it is characterized in that: it is 42 ° that the cutting of described cutting edge enters the angle, clearance angle is 1.6 °, relief width 0.2mm.