CN214236453U

CN214236453U - End milling cutter with wave edge chip dividing groove

Info

Publication number: CN214236453U
Application number: CN202120100045.1U
Authority: CN
Inventors: 谢叶飞
Original assignee: Astor Precision Tools Shanghai Co ltd
Current assignee: Astor Precision Tools Shanghai Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-09-21
Anticipated expiration: 2031-01-14

Abstract

The utility model discloses an end mill with wave edge chip dividing grooves, which comprises a cutter body, wherein the cutter body comprises a cutting part and a handle part, the outer wall surface of the cutting part is provided with peripheral edges, and spiral chip grooves are arranged between the peripheral edges; the spiral chip groove is provided with a wave blade on the wall surface opposite to the rotation direction of the cutter body, the wave blade is in a sawtooth shape, and chip separation grooves are formed on the wave blade and the wall surface of the spiral chip groove; the end surface of the cutting part is provided with end blades, and chip flutes are arranged between the end blades; the chip groove is communicated with the spiral chip groove; the peripheral edge is smoothly connected with the end edge through the arc edge. The utility model forms the chip dividing groove by arranging the wave blade on the wall surface of the spiral chip removing groove, so that the chip dividing is carried out while cutting, thereby avoiding the difficulty of longer chip removing and the scratch of the processed product is easy; the wave blade is arranged to be in a triangular-like sawtooth shape, so that the sharpness and strength of the blade part are increased, the blade is not prone to tipping, and the service life is prolonged.

Description

End milling cutter with wave edge chip dividing groove

Technical Field

The utility model relates to an end mill especially relates to an end mill with ripples sword chip groove.

Background

The cutting chips generated in the milling cutter machining are usually longer, the longer cutting chips are difficult to remove, and the surfaces of machined products are easy to scratch, so that the roughness of the machined surfaces is poorer, the longer cutting chips are difficult to clean, and porous parts are easy to block pore channels. The Chinese patent application No. 201310567409.7, published as 2014, 2, 12, is named as: the utility model provides a but end mill of chip breaking, this application relates to an end mill of chip breaking, including handle of a knife and tool bit, the tool bit is provided with side cutting edge and undercut cutting edge, side cutting edge includes two cutting edges and two ripple cutting edges, cutting edge and ripple cutting edge interval set up, be provided with spiral helicine lateral part chip pocket respectively between cutting edge and the ripple cutting edge, the helix angle is 40 +/-2, the edge bandwidth of cutting edge and ripple cutting edge is 20 +/-1 mm, the edge inclination is 3-5, undercut cutting edge is provided with four, be provided with the bottom chip pocket between the adjacent undercut cutting edge. This patent application adopts cutting edge and ripple cutting edge integrated design to realize milling cutter branch bits effect, has certain branch bits effect, nevertheless adopts cutting edge and ripple cutting edge integrated design also to lead to milling cutter to mill efficiency and machining precision and be difficult to obtain further promotion. Meanwhile, the edge part of the corrugated cutting edge is similar to a sine curve shape, the strength of the corrugated cutting edge is insufficient in the cutting process, the edge breaking phenomenon is easily caused, and the cutter is caused to have the service life of the cutting edge at the expense of the machining efficiency in the actual use process or the parameters are reduced, or the efficiency is not reduced, but the service life of the cutter is sacrificed. Accordingly, the prior art is yet to be improved and developed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a end mill with ripples sword chip groove is provided, improves surface finish quality, increase of service life improves machining efficiency.

The utility model provides an end mill with a wave edge chip dividing groove, which comprises a cutter body, wherein the cutter body comprises a cutting part and a handle part, the outer wall surface of the cutting part is provided with a peripheral edge, and a spiral chip groove is arranged between the peripheral edges; the spiral chip groove is provided with a wave blade on the wall surface opposite to the rotation direction of the cutter body, the wave blade is in a sawtooth shape, and chip separation grooves are formed on the wave blade and the wall surface of the spiral chip groove; the end surface of the cutting part is provided with end blades, and chip flutes are arranged between the end blades; the chip groove is communicated with the spiral chip groove; the peripheral edge is smoothly connected with the end edge through the arc edge.

Further, the wave edge extends to the tail end of the peripheral edge along the spiral flute in a spiral mode, and the spiral angle of the wave edge is the same as that of the spiral flute.

Furthermore, a plurality of triangular chip separating grooves connected in sequence are formed by the sawtooth waveform of the wave edge and the wall surface of the spiral chip removing groove, and the ratio of the bottom edge to the height of each chip separating groove is 1.0-3.5.

Further, the spiral angle of the spiral chip grooves is 35-40 degrees.

Further, a peripheral edge flank surface is formed between the peripheral edge and the wave edge, the width of the peripheral edge flank surface is 0.8-1.5mm, and the clearance angle formed by the peripheral edge flank surface is 10-25 degrees.

Further, the peripheral edge and the spiral chip groove are symmetrically distributed about the axial center of the tool body, the end edge and the chip groove are symmetrically distributed about the axial center of the tool body, and the end edges are converged at the axial center of the front end of the cutting portion.

Further, the end cutting edge is provided with an end cutting edge first rear cutting surface and an end cutting edge second rear cutting surface; the clearance angle formed by the first rear cutter surface of the end cutter is 5-10 degrees, and the clearance angle formed by the second rear cutter surface of the end cutter is 15-25 degrees.

The utility model discloses contrast prior art has following beneficial effect: the end mill with the wave blade chip dividing groove provided by the utility model forms the chip dividing groove by arranging the wave blade on the wall surface of the spiral chip dividing groove, so that the chip dividing is carried out while cutting, thereby avoiding the difficulty of longer chip cutting and chip removal, and the surface of a processed product is easy to scratch, so that the roughness of the processed surface is poorer; the wave blade is arranged to be in a triangular-like sawtooth shape, so that the sharpness and the strength of the blade are improved, the blade is not easy to break, the service life is prolonged, and objective conditions are created for high-speed processing.

Drawings

Fig. 1 is a schematic structural view of an end mill having a wave edge chip splitter according to an embodiment of the present invention;

fig. 2 is a schematic view of a wave edge according to an embodiment of the present invention.

In the figure:

1. a handle; 2. a cutting portion; 3. a peripheral edge; 4. a spiral chip groove; 5. a wave edge; 6. an end blade; 7. a chip pocket; 8. a circular arc edge; 9. a peripheral edge relief surface; 10. an end edge first relief surface; 11. and the end edge is a second flank surface.

Detailed Description

The invention is further described with reference to the following figures and examples.

Fig. 1 is a schematic structural view of an end mill with a wave edge chip splitter according to an embodiment of the present invention.

Referring to fig. 1, the end mill with the wavy-edge chip dividing groove according to the embodiment of the present invention includes a tool body, the tool body includes a cutting portion 2 and a shank portion 1, a peripheral edge 3 is disposed on an outer wall surface of the cutting portion 2, and a spiral chip groove 4 is disposed between the peripheral edges 3; the spiral chip groove 4 is provided with a wave blade 5 on the wall surface opposite to the rotation direction of the cutter body, the wave blade 5 is in a sawtooth shape, and chip separation grooves are formed on the wave blade 5 and the wall surface of the spiral chip groove 4; the end face of the cutting part 2 is provided with end blades 6, and chip flutes 7 are arranged between the end blades 6; the chip flute 7 is communicated with the spiral chip flute 4; the peripheral edge 3 and the end edge 6 are smoothly connected through a circular arc edge 8. The wave edge 5 and the chip dividing groove divide chips while cutting, so that the longer chips are prevented from being difficult to remove and the surface of a processed product is easy to scratch, and the roughness of the processed surface is poor.

Specifically, the wave edge 5 extends to the tail end of the peripheral edge 3 along the spiral chip discharge groove screw 4 in a spiral mode, the spiral angle of the wave edge 5 is the same as that of the spiral chip discharge groove 4, and chips are discharged at the same time in a chip dividing mode. The spiral angle of the spiral chip groove 4 is 35-40 degrees, and the large-angle spiral angle can discharge chips more smoothly. A peripheral edge flank surface 9 is formed between the peripheral edge 3 and the wave edge 5, the width of the peripheral edge flank surface 9 is 0.8-1.5mm, and the clearance angle formed by the peripheral edge flank surface 9 is 10-25 degrees, so that the sharpness of the peripheral edge 3 is ensured, and the edge strength is maintained.

Please refer to fig. 2, the end mill with the wave blade chip splitting groove of the embodiment of the present invention, the saw-toothed waveform of the wave blade 5 and the wall of the spiral chip discharging groove 4 form a plurality of triangle-like chip splitting grooves connected in sequence, the ratio of the bottom edge of the chip splitting groove to the height is 1.0-3.5, the wave blade 5 is set to be a triangle-like saw-toothed shape, and the sharpness and the strength of the blade are increased.

Specifically, the peripheral cutting edges 3 and the spiral chip flutes 4 are symmetrically distributed about the axial center of the tool body, the end cutting edges 6 and the chip flutes 7 are symmetrically distributed about the axial center of the tool body, and the end cutting edges 6 are converged at the front end axial center of the cutting part 2, so that the center structure design is adopted, and the cutting is more stable.

Specifically, the end blade 6 is formed with an end blade first flank 10 and an end blade second flank 11; the back angle formed by the first back tool surface 10 of the end edge is 5-10 degrees, and the back angle formed by the second back tool surface 11 of the end edge is 15-25 degrees; the strength of the edge part is kept while the sharpness of the end edge 6 is ensured.

To sum up, the end mill with the wave blade chip dividing groove of the embodiment of the invention forms the chip dividing groove by arranging the wave blade 5 on the wall surface of the spiral chip dividing groove 4, so that the chip dividing is carried out while cutting to avoid the difficulty of longer chip cutting and chip removal, and the surface of a processed product is easy to scratch, so that the roughness of the processed surface is poor; the wave blade 5 is arranged to be in a triangular-like sawtooth shape, so that the sharpness and strength of the blade part are increased, the blade is not easy to break, the service life is prolonged, and objective conditions are created for high-speed processing.

Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The end mill with the wave edge chip dividing grooves is characterized by comprising a tool body, wherein the tool body comprises a cutting part and a handle part, the outer wall surface of the cutting part is provided with peripheral edges, and spiral chip grooves are formed between the peripheral edges; the spiral chip groove is provided with a wave blade on the wall surface opposite to the rotation direction of the cutter body, the wave blade is in a sawtooth shape, and chip separation grooves are formed on the wave blade and the wall surface of the spiral chip groove; the end surface of the cutting part is provided with end blades, and chip flutes are arranged between the end blades; the chip groove is communicated with the spiral chip groove; the peripheral edge is smoothly connected with the end edge through the arc edge.

2. An end mill having wave edge flutes according to claim 1 wherein the wave edges extend helically along the helical flutes to peripheral edge extremities, the helix angle of the wave edges being the same as the helix angle of the helical flutes.

3. The end mill with the wave edge chip flute according to claim 2, wherein the saw-toothed wave shape of the wave edge and the wall surface of the spiral chip flute form a plurality of triangle-like chip flutes connected in series, and the ratio of the bottom edge to the height of the chip flute is 1.0-3.5.

4. An end mill having wave-cutting chip flutes according to claim 2, wherein the helix angle of said helical flutes is between 35 ° and 40 °.

5. The end mill having a wavy edge chip flute according to claim 1, wherein a peripheral edge flank surface is formed between the peripheral edge and the wavy edge, the peripheral edge flank surface has a width of 0.8 to 1.5mm, and the peripheral edge flank surface forms a relief angle of 10 ° to 25 °.

6. The end mill with flute according to claim 1 wherein said peripheral edge and said helical flute are symmetrically distributed about the axial center of said tool body, said end edge and said flute are symmetrically distributed about the axial center of said tool body, and said end edge converges at the cutting portion front end axial center.

7. The end mill having a wave edge chip flute according to claim 1 wherein said end edge is formed with an end edge first relief surface and an end edge second relief surface; the clearance angle formed by the first rear cutter surface of the end cutter is 5-10 degrees, and the clearance angle formed by the second rear cutter surface of the end cutter is 15-25 degrees.