CN214291039U - Special milling cutter of titanium alloy - Google Patents

Abstract

The utility model discloses a special milling cutter of titanium alloy, including sword handle and cutting part, sword handle and cutting part fixed connection, the sword handle is the cylinder structure, and the material of sword handle and cutting part is carbide stick material, and carbide stick material is tungsten cobalt class carbide. This special milling cutter of titanium alloy constitutes a plurality of cutting edges that the width is unequal through unequal helix angle and side sword one-to-one, and unequal helix angle design makes its cutter shock value less, and the cutting is more stable, and reducing wear, and the cutting edge knife face surface that constitutes is bright and clean, improves cutter performance through the chip groove of degree of depth gradual change simultaneously, and the big chip groove chip removal of blade chip removal is smooth and easy, reduces vibrations, increases the cutter rigidity after the chip groove depth reduces, promotes its cutting edge intensity and anti ability that bursts up, is favorable to better processing work piece.

Description

Special milling cutter of titanium alloy

Technical Field

The utility model relates to a milling cutter technical field, more specifically say, it relates to a special milling cutter of titanium alloy.

Background

The titanium alloy has small specific gravity, high specific strength, high heat stability and high corrosion resistance, and may be used widely in aviation, spaceflight, petroleum, chemical industry, ship building and other fields. The elastic modulus of the titanium alloy is low, about 1/2 of steel, the surface of the titanium alloy after being removed is easy to rebound, and strong friction is generated between the titanium alloy and the rear cutter face of the cutter; the plasticity is low, the hardness is high, the contact area of chips and a rake face is small, the cutting stress of a tool nose is large, the tool nose and a cutting edge are easy to wear, and the cutting speed is about 30m/min generally; the titanium alloy has high chemical activity, and in a high-temperature state, titanium and most components in the air generate strong chemical reaction, particularly generate interstitial solid solution with oxygen and nitrogen, generate a hard layer with high hardness, and have strong abrasion effect on a cutter; the compatibility is high, due to strong friction between the cutting chips and the cutter surface, under the action of high cutting temperature and high cutting pressure, titanium elements in the cutter material and the workpiece material are mutually compatible to generate occlusion and cutter sticking, and the cutter is easy to generate adhesive abrasion.

Meanwhile, the characteristics of high hardness, high wear resistance and the like of the titanium alloy also bring great challenges to machining, and especially for a cutting tool, the machining problems such as rapid wear of a milling cutter and the like frequently occur due to poor cutting performance of the titanium alloy, so that the machining precision and efficiency are seriously affected. Aiming at the problem, a special milling cutter for titanium alloy is designed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a special milling cutter of titanium alloy, it has the characteristics that improve cutter performance, the chip removal is smooth and easy, reduce vibrations, promotes cutter intensity and anti ability of collapsing, is favorable to better processing work piece.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the special milling cutter for titanium alloy comprises a cutter handle and a cutter edge, wherein the cutter handle and the cutter edge are fixedly connected, the cutter handle is of a cylindrical structure, the cutter handle and the cutter edge are made of hard alloy rod materials, and the hard alloy rod materials are tungsten-cobalt hard alloys.

Further, the cutting part includes side edge, chip groove and end edge, the side edge is double circular arc type structure, and is a plurality of the side edge is helical structure and uses cutting part central point as initial point circumference array.

Through the technical scheme, the blade material has the advantages of high deformation resistance, high hardness, good toughness, good hot hardness, good wear resistance, good heat dissipation and no titanium material, and the titanium-containing cutter material is easily compatible with titanium alloy at high temperature, so that cutter abrasion is aggravated.

Further, a plurality of the side edges are fixedly provided with spiral angles on the surface, the spiral angles are in a spiral structure and are circumferentially arrayed by taking the center position of the edge part as an origin, the widths of the spiral angles are different, and the spiral angles and the side edges form a plurality of cutting edges with different widths.

Through the technical scheme, the unequal spiral angle design ensures that the vibration value of the cutter is smaller, the cutting is more stable, the surface of the formed cutting edge is smooth, the jumping quantity of the cutting edge is controlled in the machining process, meanwhile, the cutting speed of the cutter can be properly reduced, the back cutting quantity can be enlarged, the feed quantity is proper, and the better workpiece machining is facilitated.

Further, the chip groove is cut between two adjacent side edges, and the chip groove is gradually reduced from the edge of the edge part to the end of the edge part.

Through above-mentioned technical scheme, chip groove through degree of depth gradual change improves cutter performance, and the big chip groove chip removal of blade is smooth and easy, reduces vibrations, increases the cutter rigidity after the chip groove depth reduces, promotes its cutting edge intensity and anti ability that bursts.

Further, a plurality of adjacent bottom edges use edge central position as original point circumference array, and two adjacent bottom edges have seted up the bottom edge chip groove between the bottom edge.

Through above-mentioned technical scheme, fretwork end edge chip groove design improves chip removal efficiency, effectively promotes cutter end edge heat dispersion.

Furthermore, end teeth are arranged at the top end of an included angle between the side edge and the bottom edge, and the surfaces of the end teeth are in a round angle shape.

Through above-mentioned technical scheme, prevent through the convex end tooth of design end tooth because of the tipping that too sharp brings, improve the wearability.

To sum up, the utility model discloses following beneficial effect has:

1. through setting up the cutting part, the cutting part includes the side sword, chip groove and end sword, the side sword is double circular arc type structure, a plurality of side swords are helical structure and use cutting part central point to be original point circumference array, it constitutes a plurality of cutting edges that the width is unequal with the side sword one-to-one to have reached unequal spiral angle, unequal spiral angle design makes its cutter shock value less, the cutting is more stable, reduce wear, and the cutting edge knife face surface that constitutes is bright and clean, the runout volume of control cutting edge in the course of working, the characteristics of better processing work piece have, thereby it is fast to have solved titanium alloy's cutting performance poor and lead to milling cutter wearing and tearing, the problem of machining precision and efficiency has seriously been influenced.

Drawings

Fig. 1 is a schematic view of a special milling cutter for titanium alloy according to the present invention;

fig. 2 is a sectional view of a cutter portion structure of a milling cutter specially used for titanium alloy according to the present invention;

fig. 3 is a sectional view of a cutting edge structure of the special milling cutter for titanium alloy according to the present invention;

fig. 4 is a sectional view of a chip groove structure of the milling cutter specially used for titanium alloy of the present invention.

In the figure: 1. a blade shank; 2. a blade part; 3. a side edge; 4. a chip groove; 5. a bottom edge; 6. a helix angle; 7. a cutting edge; 8. a bottom edge chip groove; 9. and end teeth.

Detailed Description

Example (b):

the present invention will be described in further detail with reference to the accompanying fig. 1-4.

A special milling cutter for titanium alloy is shown in figures 1-4 and comprises a cutter handle 1 and a cutter part 2, wherein the cutter handle 1 is fixedly connected with the cutter part 2, the cutter handle 1 is of a cylindrical structure, the cutter handle 1 and the cutter part 2 are made of hard alloy rod materials, and the hard alloy rod materials are tungsten-cobalt hard alloys.

Further, the edge part 2 comprises side edges 3, chip grooves 4 and bottom edges 5, the side edges 3 are of a double-arc structure, and the side edges 3 are of a spiral structure and are circumferentially arrayed by taking the center position of the edge part 2 as an origin.

The material of the blade part 2 has the advantages of high deformation resistance, high hardness, good toughness, good hot hardness, good wear resistance, good heat dissipation and no titanium material, and the titanium-containing cutter material is easy to be compatible with titanium alloy at high temperature, so that the cutter abrasion is aggravated.

Further, a helical angle 6 is fixedly installed on one surface of each of the plurality of side edges 3, the helical angles 6 are in a spiral structure and are circumferentially arrayed with the center position of the edge part 2 as an origin, the widths of the helical angles 6 are different, and the helical angles 6 and the side edges 3 form a plurality of cutting edges 7 with different widths.

The design of the unequal spiral angle 6 ensures that the vibration value of the cutter is smaller, the cutting is more stable, the surface of the formed cutting edge 7 is smooth, the jumping quantity of the cutting edge 7 is controlled in the processing process, the cutting speed of the cutter can be properly reduced, the back cutting quantity can be enlarged, the feed quantity is proper, and the better processing of workpieces is facilitated.

Further, a chip groove 4 is formed between two adjacent side edges 3, and the depth of the chip groove 4 from the edge of the blade part 2 to the edge tail of the blade part 2 is gradually reduced.

The service performance of the cutter is improved through the chip removal groove 4 with gradually changed depth, the chips of the large chip removal groove 4 on the cutting edge can be smoothly removed, the vibration is reduced, the rigidity of the cutter is increased after the chip removal groove 4 is deeply reduced, and the cutting edge strength and the anti-collapse capability of the cutter are improved.

Further, a plurality of adjacent bottom blades 5 are circumferentially arrayed by taking the central position of the blade part 2 as an origin, and a bottom blade chip groove 8 is formed between two adjacent bottom blades 5.

The design of fretwork end sword chip groove 8 improves chip removal efficiency, effectively promotes 5 heat dispersion of cutter end sword.

Furthermore, end teeth 9 are arranged at the top end positions of the included angles between the side blades 3 and the bottom blade 5, and the surfaces of the end teeth 9 are in a round angle shape.

The design of the arc-shaped end teeth 9 prevents the end teeth 9 from tipping due to over sharp, and improves the wear resistance.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (3)

1. The utility model provides a special milling cutter of titanium alloy, includes sword handle (1) and cutting part (2), its characterized in that: the cutting edge comprises a cutting edge handle (1), a cutting edge part (2), a hard alloy rod and a cutting edge, wherein the cutting edge handle (1) is fixedly connected with the cutting edge part (2), the cutting edge handle (1) is of a cylindrical structure, the cutting edge handle (1) and the cutting edge part (2) are made of hard alloy rod materials, and the hard alloy rod materials are tungsten-cobalt hard alloys;

the cutting part (2) comprises side blades (3), chip grooves (4) and bottom blades (5), the side blades (3) are of double-arc structures, and the side blades (3) are in spiral structures and are circumferentially arrayed by taking the central position of the cutting part (2) as an origin;

end teeth (9) are arranged at the top end of an included angle between the side blade (3) and the bottom blade (5), and the surfaces of the end teeth (9) are in a round angle shape;

a plurality of equal fixed mounting in side sword (3) surface has helix angle (6), helix angle (6) are helical structure and use cutting part (2) central point as origin circumference array, and are a plurality of the width of helix angle (6) is inequality, and is a plurality of helix angle (6) and a plurality of side sword (3) constitute a plurality of cutting edges (7) that the width is inequality.

2. The special milling cutter for titanium alloys according to claim 1, wherein: chip groove (4) are seted up between two adjacent side edges (3), chip groove (4) are started to the degree of depth that cutting edge (2) sword tail ends by cutting edge (2) and are reduced gradually.

3. The special milling cutter for titanium alloys according to claim 2, wherein: a plurality of adjacent end sword (5) use cutting part (2) central point to be original point circumference array, two are adjacent end sword chip groove (8) have been seted up between end sword (5).

Images