CN202741819U

CN202741819U - Three-blade milling cutter

Info

Publication number: CN202741819U
Application number: CN 201220153296
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: 2013-02-20
Anticipated expiration: 2022-04-11

Abstract

The utility model belongs to the field of machine tool cutting cutters and particularly discloses a three-blade milling cutter. The three-blade milling cutter comprises a cutter handle and a cutter head, wherein a spiral scrap discharging groove and a clear side are arranged on the circumferential surface of the cutter head; three cutting blades are arranged on the end surface of the cutter head; the cutting blades comprises cutting teeth; the spiral angle of the clear side is 38 degrees; the clear side comprises a circular arc clear side and a straight line surface clear side; the circular arc clear side has the clearance angle of 15 degrees and the width of 0.7mm; the straight line surface clear side has the clearance angle of 23 degrees and the width of 1.1mm; the cutting teeth of the cutting blades have the rake angle of 6 degrees; a first cutter surface and a second cutter surface are arranged on the side surface of the cutting teeth; the first cutter surface has the width of 1.0mm and the clearance angle of 12 degrees; and the second cutter surface has the clearance angle of 13 degrees. The three-blade milling cutter has the advantages as follows: the durability of the milling cutter is improved; and machined products such as a mobile phone shell, a notebook computer shell and the like have high smoothness and high mirror gloss.

Description

A kind of three blade milling cutters

Technical field

The utility model belongs to machine cut cutter field, specifically a kind of 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 a kind of 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:

A kind of 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, has three cutting edges on the end face of cutter head, and cutting edge comprises that tooth cuts, 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 0.7mm; The relief angle on the clear limit of planarea is 23 °, and wide is 1.1mm, and it is 6 ° that the tooth of described cutting edge is cut anterior angle; Tooth is cut the side and is provided with the first knife face and the second knife face, and the first knife face width is 1.0mm, 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 4.1mm, and external diameter is 8.4mm.

The tooth entrance angle of described cutting edge is 42 °, 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 figure, Fig. 2, Fig. 3, shown in Figure 4, a kind of three blade milling cutters, the handle of this milling cutter directly is 10mm, length is 76mm, and it comprises handle of a knife 1 and cutter head 2, has 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 that tooth cuts 2aa, and described clear limit 4 helical angles are 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 0.7mm; The relief angle of the clear limit 4b of planarea is 23 °, and wide is 1.1mm, and it is 6 ° that the tooth of described cutting edge is cut the 2aa anterior angle; Tooth is cut the side and is provided with the first knife face 2b and the second knife face 2c, and the first knife face width is 1.0mm, and its relief angle is 12 °; The relief angle of the second knife face is 13 °.

The thick internal diameter of described cutter head 2 cores is 4.1mm, and external diameter is 8.4mm.

The tooth of described cutting edge 2a is cut 2aa, and to enter the angle be 42 °, and clearance angle is 1.6 °, relief width 0.2mm.

Claims

1. blade milling cutter, 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 that tooth cuts, and 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 0.7mm; The relief angle on the clear limit of planarea is 23 °, and wide is 1.1mm, and it is 6 ° that the tooth of described cutting edge is cut anterior angle; Tooth is cut the side and is provided with the first knife face and the second knife face, and the first knife face width is 1.0mm, and its relief angle is 12 °; The relief angle of the second knife face is 13 °.

2. a kind of three blade milling cutters according to claim 1, it is characterized in that: the thick internal diameter of described cutter head core is 4.1mm, and external diameter is 8.4mm.

3. a kind of three blade milling cutters according to claim 1, it is characterized in that: the tooth entrance angle of described cutting edge is 42 °, clearance angle is 1.6 °, relief width 0.2mm.