CN2865954Y

CN2865954Y - Milling cutter

Info

Publication number: CN2865954Y
Application number: CN 200620055205
Authority: CN
Inventors: 朱松林; 廖志雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-02-19
Filing date: 2006-02-19
Publication date: 2007-02-07
Anticipated expiration: 2016-02-19

Abstract

The utility model discloses a milling cutter composed of column shaped toolbars and coniform tool bit. The top of tool bit is set with one protruding coniform knifepoint. The top position of knifepoint is arc transition. The position where knifepoint bottom is connected to tool bit taper is arc transition. The milling cutter has two cutting edges and two grooves. Moreover, the top of tool bit is set with one protruding knifepoint. The top position A of knifepoint is arc transition to form top arc surface of tool bit. The position B where knifepoint bottom is connected to tool bit taper is arc transition to form bottom arc surface of tool bit. The shape of tool bit can form two planes, two arc surfaces and one taper surface. The striking surface line duct structure of golf bar head processed with such utility model also has arc surface and taper surface to realize the forming of R shaped line duct structure in one time. The utility model features simple processing procedure, low cost and high efficiency.

Description

A kind of milling cutter

[technical field]

The utility model relates to a kind of milling cutter, specifically relates to a kind of special-purpose milling cutter that is used to process golf clubs head batting surface R molded lines groove structure.

[background technology]

The striking surface of golf driver head all is provided with duct usually, makes ball be hit the back and produces reversing, reduces after ball lands and rolls, to promote ball-handling property.Shown in Figure 1A, four corners of traditional duct all are the right angle, make because of golf driver head is generally stainless steel material, make the corner very sharp keen, and cut is caused the golf damage easily, shortens the service life of golf.Shown in Figure 1B, at present new duct design changes the corner into the R angle, avoiding that golf is caused damage, and the blow performance that improves striking surface.But existing milling cutter needs repeatedly processing just can be processed into the R angle when the duct of the striking surface of processing golf driver head, also needs to change several different milling cutters sometimes and processes, processing very complicated, and cost height, and working (machining) efficiency is low.

[summary of the invention]

The purpose of this utility model is to overcome the deficiencies in the prior art part, provide a kind of processing simple, and need not to change milling cutter, but when the R molded lines ditch of processing golf head batting surface the special-purpose milling cutter of once-forming.

The purpose of this utility model is achieved in that

A kind of milling cutter, it comprises cylinder shape knife rod and conical cutter head, it is characterized in that, and the top of cutter head is provided with the conical point of a knife of a convex, and the apical position of described point of a knife is an arc transition, and the position that the bottom of described point of a knife and cutter head circular cone join is an arc transition.

Aforesaid a kind of milling cutter is characterized in that the top of described conical cutter head is provided with the groove of two symmetrically arranged inclinations, and described two grooves are set to the top of point of a knife always, and the intersection of described groove and cutter head profile constitutes two main cutting edges.

Aforesaid a kind of milling cutter is characterized in that, described two grooves constitute two rake faces.

Aforesaid a kind of milling cutter is characterized in that, the described cutter head apical position arc radius R1 of place is 0.10～0.38mm; The position arc radius R2 that the bottom of point of a knife and cutter head circular cone join is 0.10～0.38mm.

Aforesaid a kind of milling cutter is characterized in that, described anterior angle is that 0 ° of primary clearance is 8 °-15 °.

Aforesaid a kind of milling cutter is characterized in that, described cutter head part taper seat tapering is 5 °～30 °.

Aforesaid a kind of milling cutter is characterized in that, on the described cutter head circular arc both sides R1 respectively and the length of straigh line L between 30 ° of lines and the 150 ° of line point of contacts be 0.70-0.90mm.

Aforesaid a kind of milling cutter is characterized in that, on the described cutter head between arc surface R1 peak and the cutter head plane distance H of (promptly tangent horizontal plane) with R2 be 0.25-0.50mm.

Aforesaid a kind of milling cutter is characterized in that, described milling cutter is that wolfram steel or tool steel material are made.

Milling cutter of the present utility model has 2 cutting edges and 2 grooves, and is provided with a convex point of a knife on the top of cutter head, and the apical position A of point of a knife is an arc transition, constitutes arc surface on the cutter head; The position B that the bottom of point of a knife and cutter head circular cone join is an arc transition, constitutes arc surface under the cutter head, makes the cutter head profile form two planes, two arc surfaces and a taper seat.The striking surface duct structure of the golf driver head that the utility model processes also has arc surface and taper seat, thereby reaches the function of once-forming R molded lines groove structure.And processing is simple, and cost is low, the working (machining) efficiency height.

[description of drawings]

Figure 1A is the structural representation of the striking surface duct of existing golf driver head.

Figure 1B is the golf club head batting surface duct structural representation after the utility model processing.

Fig. 2 is a front view of the present utility model;

Fig. 3 is a upward view of the present utility model;

Fig. 4 is the C portion enlarged drawing among Fig. 2;

Fig. 5 is the partial enlarged drawing of upward view;

Fig. 6 is the enlarged drawing of the structure of the utility model point of a knife.

[specific embodiment]

A kind of milling cutter, it comprises knife bar 1 and cutter head 2, knife bar 1 and cutter head 2 hold together, wherein knife bar 1 is cylindrical, cutter head 2 is conical, conical tapering is 20 °～40 °, the top of cutter head 2 is provided with the conical point of a knife 7 of a convex, be provided with the groove 3 of two symmetrically arranged inclinations on the top of conical cutter head 2, article two, groove 3 is set to the top of point of a knife 7 always, the angle of its inclination is γ (seeing attached list), groove 3 has constituted two main cutting edges 4 with the intersection of cutter head 2 profiles, article two, groove 3 constitutes two rake faces 5, and the rear end of rake face be a back knife face 6, and back knife face 6 is that b and relief angle are that afterwards knife face and a plurality of relief angle are that the minor flank of α 2 multiform shapes constitutes for the master of multiform shape of α 1 by width.The apical position A of point of a knife 7 is an arc transition, constitutes arc surface R1 on the cutter head, and its arc radius is 0.10～0.38mm; The position B that the bottom of point of a knife 7 and cutter head 2 circular cones join is an arc transition, constitutes arc surface R2 under the cutter head, and its arc radius is 0.10～0.38mm.Cutter head 2 profiles form two planes 5, two arc surface A, B and a taper seat.The duct structure that the utility model processes also has arc surface and taper seat, thereby reaches the function of this duct structure of one-shot forming.

Because groove 3 is a tipper, in the cutter rotary course, can there be certain extruding force on its inclined plane to smear metal, and smear metal can be detained, thereby discharges easily, has guaranteed that chip removal is unobstructed.

Special-purpose milling cutter of the present utility model, its anterior angle is that 0 ° of primary clearance is 8 °-15 °, because its cutting speed is very fast, reach 20,000～40,000rpm, therefore can not influence the sharpness of cutting edge, also can not influence the fineness of surface to be machined, but also guarantee the intensity of cutter head, cutter can not damaged in process easily.

The utility model design is gone up use continuous major and minor back knife face, can guarantee that cutter head has enough intensity, can reduce the friction between cutting edge and the machined surface again, prevent heating.

Milling cutter of the present utility model is that wolfram steel or tool steel material are made.According to the characteristic of machined material, can also carry out vacuum plating (as titanium nitride or nitrogen titanium aluminide etc.), the service life of further improving cutter to cutter.Cutter head is provided with 2 cutting edges, because its overall structure is tiny, therefore anterior angle is designed to 0 °, guaranteed that like this this milling cutter has enough intensity, in process, the milling cutter rotating speed is fast, and feed velocity is slow, can guarantee the surface smoothness of product to be processed again, thereby reach the requirement of processing golf club striking face R molded lines groove structure.

Experimental result shows, the utility model special-purpose milling cutter can be good at processing golf clubs head batting surface R molded lines groove structure, and one-shot forming, reaches the instructions for use of product, has avoided traditional expensive and inefficient that repeatedly processing mode brought.

The utility model cutter head part taper seat tapering is 5 °～30 °; On the cutter head circular arc both sides R1 respectively and the length of straigh line L between 30 ° of lines and the 150 ° of line point of contacts be 0.70-0.90mm.On the cutter head between arc surface R1 peak and the cutter head plane distance H of (promptly tangent horizontal plane) with R2 be 0.25-0.50mm.

Concrete parameter among the embodiment is as follows:

Content of parameter	Performance
Content of parameter	Performance	Anterior angle (γ)	0
Primary clearance (α ₁)	8°～15°	Anterior angle (γ)	0
Primary clearance (α ₁)	8°～15°	Front clearance (α ₂)	20°～30°
Main back knife face width (b)	0.05-0.10mm	Front clearance (α ₂)	20°～30°
Main back knife face width (b)	0.05-0.10mm	Arc radius (R on the cutter head ₁)	0.10～0.38mm
Arc radius (R under the cutter head ₂)	0.10-0.38mm	Arc radius (R on the cutter head ₁)	0.10～0.38mm
Arc radius (R under the cutter head ₂)	0.10-0.38mm	Milling cutter rotating speed (n)	20,000-40,000rpm
The tapering of cutter head circular cone (Φ)	20°～40°	Milling cutter rotating speed (n)	20,000-40,000rpm
The tapering of cutter head circular cone (Φ)	20°～40°	The cutter core diameter	0.05-0.10m/m
Knife bar diameter (d)	3.0-5.0m/m	The cutter core diameter	0.05-0.10m/m

Claims

1. milling cutter, it comprises cylinder shape knife rod (1) and conical cutter head (2), it is characterized in that, the top of cutter head (2) is provided with the conical point of a knife (7) of a convex, the apical position (A) of described point of a knife (7) is an arc transition, and the position (B) that the bottom of described point of a knife (7) and cutter head (2) circular cone join is an arc transition.

2. a kind of milling cutter according to claim 1, it is characterized in that, the top of described conical cutter head (2) is provided with the groove (3) of two symmetrically arranged inclinations, described two grooves (3) are set to the top of point of a knife (7) always, and described groove (3) constitutes two main cutting edges (4) with the intersection of cutter head (2) profile.

3. a kind of milling cutter according to claim 1 and 2 is characterized in that, described two grooves (3) constitute two rake faces (5).

4. a kind of milling cutter according to claim 1 and 2 is characterized in that, it is 0.10～0.38mm that described cutter head apical position (A) is located arc radius R1; It is 0.10～0.38mm that arc radius R2 is located in the position (B) that the bottom of point of a knife (7) and cutter head (2) circular cone join.

5. a kind of milling cutter according to claim 1 and 2 is characterized in that, described anterior angle is that 0 ° of primary clearance is 8 °-15 °.

6, a kind of milling cutter according to claim 1 and 2 is characterized in that, described cutter head part taper seat tapering is 5 °～30 °.

7, a kind of milling cutter according to claim 1 and 2 is characterized in that, on the described cutter head circular arc both sides R1 respectively and the length of straigh line L between 30 ° of lines and the 150 ° of line point of contacts be 0.70-0.90mm.

8, a kind of milling cutter according to claim 1 and 2 is characterized in that, on the described cutter head between arc surface R1 peak and the cutter head plane distance H of (promptly tangent horizontal plane) with R2 be 0.25-0.50mm.

9. a kind of milling cutter according to claim 1 and 2 is characterized in that, described milling cutter is that wolfram steel or tool steel material are made.