CN102328127B

CN102328127B - Superfine tapered ball end milling cutter

Info

Publication number: CN102328127B
Application number: CN 201110284119
Authority: CN
Inventors: 程祥; 贾鹏; 刘军营; 杨先海; 田忠强
Original assignee: Shandong University of Technology
Current assignee: Shandong University of Technology
Priority date: 2011-09-22
Filing date: 2011-09-22
Publication date: 2013-04-10
Anticipated expiration: 2031-09-22
Also published as: CN102328127A

Abstract

The invention relates to a superfine tapered ball end milling cutter. The superfine tapered ball end milling cutter is composed of a cutter clamping handle, a cutting part and a transitional part between the cutter clamping handle and the cutting part, wherein the cutting part is uniformly distributed with a plurality of arched cutting edges and a plurality of tapered side edges, each arched cutting edge is smoothly connected with one tapered side edge, head ends of the plurality of arched cutting edges intersect at the vertex of the milling cutter, a ball end cutter face is between two adjacent arched cutting edges, and a side edge cutter face is between two adjacent tapered side edges. The superfine tapered ball end milling cutter is characterized in that rake angles alpha of each arched cutting edge and each tapered side edge are both negative values, wherein the rake angles alpha is more than -70 degrees and not more than -60 degrees; and the central angle beta of each arched cutting edge is not less than 60 degrees but less than 85 degrees, the cutting radius of the arched cutting edges is not less than 0.01 mm but not more than 1 mm, and a conical angle gamma of each tapered side edge is not less than 5 degrees but not more than 30 degrees; a ball end cutter face and aside edge cutter face are both ruled faces and are smoothly connected with each other. By adopting the superfine tapered ball end milling cutter, the higher cutting edge geometric precision is easy to obtain. The superfine tapered ball end milling cutter is particularly suitable for finely cutting parts with complex curve feature.

Description

Superfine tapered ball end milling cutter

Technical field

The present invention relates to a kind of superfine tapered ball end milling cutter, belong to field of machining.

Background technology

Along with the development of nanometer technique, Micrometer-Nanometer Processing Technology becomes one of the most active study hotspot of current manufacturing industry as the key technology and the important foundation that realize its application.Exist the complex characteristic of the small-sized and meso-scale of a large amount of three-dimensionals (size between several microns to hundreds of microns) structure during at present industry is made, requirement has high geometric accuracy and surface roughness, for these requirements, mechanical minuteness milling processing has the irreplaceable precision of other fine machining methods and the flexibilities such as electrochemistry.In mechanical minuteness milling field, micro-nano machining tool is succeeded in developing and commercialization in Germany, Japan and the U.S. etc., but used milling cutter also is in the starting stage on these micro-nano machining tools, generally be that large-scale cutter miniaturization is obtained, the defective that has is as follows: the anterior angle of large-scale milling cutter generally be on the occasion of, so that the minuteness milling tool of miniaturization also has positive rake angle, not only so that these minuteness milling tool poor rigidities, and especially be not suitable for the microfabrication hard brittle material, be difficult to form smear metal and produce high-quality cutting surface; In the microminiaturized process of large-scale milling cutter, because the cutting edge feature affects, be difficult to miniaturization to 1 millimeter with interior radius of clean-up; The fine rose cutter that miniaturization gets is when processing has the extra high fine open complex-curved characteristic part of required precision, and working (machining) efficiency is difficult to improve; The fine rose cutter that miniaturization gets owing to there being complicated geometric properties, so that it is low to make efficient, and is difficult to obtain high-precision cutting edge during fabrication.

What research and development were suitable for the processing of mechanical minuteness milling has high rigidity, high accuracy and a high efficiency small-sized milling cutter, for the innovative development that promotes milling cutter, particularly significant for the development that promotes the minuteness milling technology.

Summary of the invention

The object of the present invention is to provide a kind ofly can overcome defects, have high rigidity, high accuracy and high efficiency superfine tapered ball end milling cutter.Its technical scheme is:

A kind of superfine tapered ball end milling cutter, by the cutter holding handle, cutting tip and the transition portion between cutter holding handle and cutting tip consist of, wherein be evenly equipped with a plurality of circular-arc cutting edges and a plurality of taper side edge on the cutting tip, each circular-arc cutting edge all is being smoothly connected a taper side edge, the head end of a plurality of circular-arc cutting edges intersects at the summit of milling cutter, be the bulb knife face between the adjacent two circular-arc cutting edges, be the side edge knife face between the adjacent two taper side edges, namely along the milling cutter direction of rotation, cutting face behind the bulb of a circular-arc cutting edge, be the front cutting face of bulb of next circular-arc cutting edge, it is characterized in that: the anterior angle α of each circular-arc cutting edge and taper side edge is negative value, and the central angle β of 60 °≤circular-arc cutting edge＜85 °, 0.01 the radius of clean-up of millimeter≤circular-arc cutting edge≤1 millimeter, the coning angle γ of 5 °≤taper side edge≤30 °; Bulb knife face and side edge knife face all adopt ruled surface, and both are smoothly connected.

Described superfine tapered ball end milling cutter, the anterior angle α of circular-arc cutting edge and taper side edge are all greater than negative 70 °.

Described superfine tapered ball end milling cutter is equipped with chip area on each bulb knife face.

The present invention compared with prior art, its advantage is:

1, because the anterior angle of each circular-arc cutting edge and taper side edge is negative value, so that the rigidity of minuteness milling tool is high, be conducive to obtain high dimensional accuracy, and in mechanical minuteness milling processing, be conducive to generate smear metal, when especially processing hard brittle material, be conducive to form smear metal and generate high-quality cutting surface;

2,0.01 millimeter to 1 millimeter radius of clean-up is more suitable in the part processing with minutiae the present invention;

3, circular-arc cutting edge and taper side edge, simple structure is conducive to obtain the high accuracy of manufacture, so that the present invention is more suitable in the minuteness milling processing with the extra high fine open complex-curved characteristic part of required precision;

4, the forward and backward knife face of bulb and the forward and backward knife face of side edge all adopt ruled surface, so that the present invention, is conducive to obtain to have during fabrication circular-arc cutting edge and the taper side edge of high accuracy geometry, makes efficient and also greatly improve.

Description of drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is that A shown in Figure 1 is to view;

Fig. 3 is B-B profile shown in Figure 1.

Among the figure: 1, cutter holding handle 2, transition portion 3, circular-arc cutting edge 4, taper side edge 5, bulb knife face 6, side edge knife face 7, chip area

The specific embodiment

In the embodiment shown in Fig. 1-3: consisted of by cutter holding handle 1, cutting tip and the transition portion between cutter holding handle 1 and cutting tip 2, wherein be evenly equipped with a plurality of circular-arc cutting edges 3 and a plurality of taper side edge 4 on the cutting tip, each circular-arc cutting edge 3 all is being smoothly connected a taper side edge 4, the head end of a plurality of circular-arc cutting edges 3 intersects at the summit of milling cutter, being bulb knife face 5 between the adjacent two circular-arc cutting edges 3, is side edge knife face 6 between the adjacent two taper side edges 4; The anterior angle α of each circular-arc cutting edge 3 and taper side edge 4 is negative 60 °, and the central angle β of circular-arc cutting edge 3 is 79 °, and 0.2 millimeter of the radius of clean-up of circular-arc cutting edge 3, the coning angle γ of taper side edge 4 are 11 °; Bulb knife face 5 and side edge knife face 6 all adopt ruled surface, and both are smoothly connected; Be equipped with chip area 7 on each bulb knife face 5.

Claims

1. superfine tapered ball end milling cutter, by cutter holding handle (1), cutting tip and the transition portion (2) that is positioned between cutter holding handle (1) and the cutting tip consist of, wherein be evenly equipped with a plurality of circular-arc cutting edges (3) and a plurality of taper side edge (4) on the cutting tip, each circular-arc cutting edge (3) all is being smoothly connected a taper side edge (4), the head end of a plurality of circular-arc cutting edges (3) intersects at the summit of milling cutter, be bulb knife face (5) between the adjacent two circular-arc cutting edges (3), be side edge knife face (6) between the adjacent two taper side edges (4), it is characterized in that: the anterior angle α of each circular-arc cutting edge (3) and taper side edge (4) is negative value, and-70 °＜anterior angle α≤-60 °, the central angle β of 60 °≤circular-arc cutting edge (3)＜85 °, 0.01 the radius of clean-up of millimeter≤circular-arc cutting edge (3)≤1 millimeter, the coning angle γ of 5 °≤taper side edge (4)≤30 °; Bulb knife face (5) and side edge knife face (6) all adopt ruled surface, and both are smoothly connected.

2. superfine tapered ball end milling cutter as claimed in claim 1 is characterized in that: be equipped with chip area (7) on each bulb knife face (5).