CN103567521A

CN103567521A - Two-blade bulb milling cutter for aluminum

Info

Publication number: CN103567521A
Application number: CN201310565538.2A
Authority: CN
Inventors: 欧阳恩
Original assignee: SUZHOU WANYI KNIFE INDUSTRY Co Ltd
Current assignee: SUZHOU WANYI KNIFE INDUSTRY Co Ltd
Priority date: 2013-11-14
Filing date: 2013-11-14
Publication date: 2014-02-12

Abstract

The invention discloses a two-blade bulb milling cutter for aluminum. The two-blade bulb milling cutter comprises a cutter handle and a cutter bit, wherein two groups of symmetric spiral blades are formed at the front end of the cutter bit, each blade comprises a main chip cutting blade and an auxiliary chip cutting blade, a chip cutting groove is formed between the two main chip cutting blades, the head parts of the blades of the main chip cutting blades and the auxiliary chip cutting blades are of spherical surfaces, the deviation of the radius of the spherical surface at the head part of each blade is +/-1 percent of the radius of the spherical surface, the rear end of the chip cutting groove is provided with a V-shaped groove tail, and an included angle beta between the auxiliary chip cutting blade at the tail end of the groove and a horizontal plane is 45 DEG. According to the two-blade bulb milling cutter for aluminum, through increasing the included angle between the auxiliary chip cutting blades and the horizontal line, and arranging the groove tail at the rear end of the chip cutting groove into a V-shaped structure, chips are promoted to be discharged out from the chip cutting groove, the milling cutter is unlikely to be clamped and broken, and thus the service life of a small milling cutter is prolonged.

Description

A kind of two sword aluminium rose cutters

Technical field:

The present invention relates to the technical field of two blade milling cutters, more specifically to two sword aluminium rose cutters.

Background technology:

Milling cutter is a kind of important cutter using in modern industry machined, and present milling cutter can be divided into single head milling cutter, two blade milling cutters and common three blade milling cutters thereof etc. according to blade.And the cotter mill cutter of two blade milling cutter special uses, it is empty unlike three moulding centers, blade milling cutter center, can not be to the direct feed of horizontal end face, can only be from side end face feed, but its only have two-edged operation steadily to compare three blade milling cutters poor, beating when its processing is rotated is larger, so it can only carry out roughing.Use now two more blade milling cutters on aluminium alloy, to process keyway, less keyway, its two blade milling cutters used tend to cannot from chip trough, get rid of and cause milling cutter stuck because of smear metal, and the stuck rear milling cutter tip that easily causes of milling cutter ruptures, thereby causes scrapping of milling cutter.

Summary of the invention:

Object of the present invention is exactly the deficiency for prior art, and two sword aluminium rose cutters are provided, and it is by increasing the angle between front cutting edge and horizontal line, and the groove tail of establishing chip trough rear end is V-structure, thereby impels smear metal to discharge from chip trough.

For achieving the above object, a kind of two sword aluminium rose cutters of the present invention, comprise handle of a knife and cutter head, the front end of cutter head forms two groups of symmetrical helical form blades, described blade is comprised of main cutting edge and front cutting edge, between two main cutting edges, form chip trough, the head of the blade that described main cutting edge and front cutting edge form is spheric, the deviation of the spherical radius of blade head spherical radius ± 1% between, the groove tail that described chip trough rear end is V-shaped, the front cutting edge of groove tail end and horizontal angle β are 45 °.

As technique scheme preferably, two described sword aluminium rose cutters are small-sized milling cutter, the diameter of described cutter head is between 1～3mm.

Beneficial effect of the present invention is: it is by increasing the angle between front cutting edge and horizontal line, and the groove tail of establishing chip trough rear end is V-structure, thereby impel smear metal to discharge from chip trough, be difficult for making the stuck fracture of milling cutter, thereby extended the service life of small-sized milling cutter.

Accompanying drawing explanation:

Below in conjunction with accompanying drawing, the present invention is described further:

Fig. 1 is structural representation of the present invention;

Fig. 2 is that enlarged drawing is looked on the right side of cutter head 2 of the present invention.

Symbol description in figure:

1, handle of a knife; 2, cutter head; 3, main cutting edge; 4, front cutting edge; 5, chip trough; 6, groove tail.

The specific embodiment:

See shown in Fig. 1 and Fig. 2: two sword aluminium of the present invention comprise handle of a knife 1 and cutter head 2 with rose cutter, the front end of cutter head 2 forms two groups of symmetrical helical form blades, described blade is comprised of main cutting edge 3 and front cutting edge 4, between two main cutting edges 3, form chip trough 5, the head of the blade that described main cutting edge 3 and front cutting edge 4 form is spheric, the deviation of the spherical radius of blade head spherical radius ± 1% between, described chip trough 5

The groove tail 6 that rear end is V-shaped, front cutting edge 4 and the horizontal angle β of groove tail 6 ends are that 45 ° of two sword aluminium rose cutter is small-sized milling cutter, the diameter of cutter head 2 is between 1～3mm.

Operation principle: more existing two blade milling cutters are for increasing its traveling comfort, the groove tail 6 of its cutting slot 5 is designed to arcuate structure, although make it have certain stationarity and machining accuracy, but it is difficult for the chip discharge that cutting in service is produced, the milling cutter using for some small-sized keyways, its smear metal easily makes the stuck fracture of milling cutter, thereby cause, scrap, front cutting edge 4 and the horizontal angle β of groove tail 6 ends of existing milling cutter are generally 30 ° simultaneously, for some two small-sized blade milling cutters, in the processing of 30 ° of milling cutters of angle, chip removal effect is undesirable, angle β is generally the situation of 45 ° and has good chip removal effect, thereby extended the service life of small-sized milling cutter.

Above content is only preferred embodiment of the present invention, for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, and this description should not be construed as limitation of the present invention.

Claims

1. a sword aluminium rose cutter, comprise handle of a knife (1) and cutter head (2), the front end of cutter head (2) forms two groups of symmetrical helical form blades, described blade is comprised of main cutting edge (3) and front cutting edge (4), between two main cutting edges (3), form chip trough (5), it is characterized in that: the head of the blade that described main cutting edge (3) and front cutting edge (4) form is spheric, the deviation of the spherical radius of blade head spherical radius ± 1% between, the groove tail (6) that described chip trough (5) rear end is V-shaped, the front cutting edge (4) of groove tail (6) end is 45 ° with horizontal angle β.

2. two sword aluminium rose cutters according to claim 1, is characterized in that: two described sword aluminium rose cutters are small-sized milling cutter, and the diameter of described cutter head (2) is between 1～3mm.