CN216828837U

CN216828837U - Rough milling cutter with flat chip breaker groove

Info

Publication number: CN216828837U
Application number: CN202123310521.1U
Authority: CN
Inventors: 谢叶飞
Original assignee: Astor Precision Tools Shanghai Co ltd
Current assignee: Astor Precision Tools Shanghai Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-06-28
Anticipated expiration: 2031-12-27

Abstract

The utility model discloses a rough milling cutter with flat chip breaker 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, the peripheral edge is formed with a peripheral edge rear cutter surface, a plurality of chip breaker grooves are arranged on the peripheral edge rear cutter surface along the axial direction of the cutter body, and chip removal grooves are formed between the peripheral edges; the end surface of the cutting part is provided with end blades, and chip flutes are arranged between the end blades; the chip grooves are communicated with the chip discharge grooves; the peripheral edge is smoothly connected with the end edge through the arc edge. The utility model arranges the flat chip breakers along the axial direction on the rear cutter face of the peripheral blade, which can divide chips to avoid the difficulty of longer chips and chips during cutting and is easy to scratch the processed product; the peripheral edge and the chip breaker groove are arranged into triangle-like saw teeth, so that the sharpness and the strength of the edge part are increased, the edge is not easy to break, and the service life is prolonged.

Description

Rough milling cutter with flat chip breaker groove

Technical Field

The utility model relates to an end mill especially relates to a rough milling cutter with flat chip breaker 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 existing part of milling cutters adopt the combined design of cutting edges and corrugated cutting edges to realize the chip dividing effect of the milling cutters, and have a certain chip dividing effect, but the combined design of the cutting edges and the corrugated cutting edges also causes the milling efficiency and the processing precision of the milling cutters to be difficult to further promote. 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 thick milling cutter with flat chip breaker groove is provided, the smear metal of solving current milling cutter production is longer, causes the chip removal difficulty, influences the problem in processing effect and cutter life-span.

The utility model provides a rough milling cutter with flat chip breaker groove to solve the technical problems, 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, the peripheral edge is formed with a peripheral edge rear cutter surface, a plurality of chip breaker grooves are arranged on the peripheral edge rear cutter surface along the axial direction of the cutter body, and chip removal grooves are formed between the peripheral edges; the end surface of the cutting part is provided with end blades, and chip flutes are arranged between the end blades; the chip grooves are communicated with the chip discharge grooves; the peripheral edge is smoothly connected with the end edge through the arc edge.

Furthermore, the plurality of chip breakers sequentially extend to the tail end of the peripheral edge along the peripheral edge, the peripheral edge is in a sawtooth shape, and the axial section of each chip breaker is in a sawtooth shape.

Further, the ratio of the bottom edge to the height of the axial section of the chip breaker groove is 1.0-3.5.

Further, the width of the peripheral edge flank surface is 1.5mm-2.5mm, and the clearance angle formed by the peripheral edge flank surface is 10-25 degrees.

Further, the width of the chip breaker along the circumferential direction of the outer wall surface of the cutting part is 1.5-2.5mm, and the axial length of the outer wall surface of the cutting part of the chip breaker is 1-1.5 mm.

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

Further, the cutting portion is coated with a diamond-like coating.

Further, the wall surface of the chip removal groove is polished.

The utility model discloses contrast prior art has following beneficial effect: the rough milling cutter with the flat chip breakers provided by the utility model has the advantages that the flat chip breakers are sequentially arranged along the axial direction on the rear cutter face of the peripheral edge, so that chips are separated while cutting is carried out, and the problem that long chips are difficult to remove or the processed products are scratched is avoided; the peripheral edge and the chip breaker groove are arranged in a triangle-like sawtooth shape, so that the sharpness and the strength of the edge part are increased, the edge 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 a rough milling cutter having flat chip breakers according to an embodiment of the present invention;

fig. 2 is a schematic view of a cutting portion according to an embodiment of the present invention.

In the figure:

1. a handle; 2. a cutting portion; 3. a peripheral edge; 4. a chip groove; 5. an end blade; 6. a chip pocket; 7. a chip breaker groove.

Detailed Description

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

Fig. 1 is a schematic structural view of a rough milling cutter with flat chip breakers according to an embodiment of the present invention; fig. 2 is a schematic view of a cutting portion according to an embodiment of the present invention.

Referring to fig. 1 and 2, a rough milling cutter with flat chip breakers according to an embodiment of the present invention includes a cutter body, the cutter body includes a cutting portion 2 and a handle portion 1, a peripheral edge 3 is disposed on an outer wall surface of the cutting portion 2, the peripheral edge 3 is formed with a peripheral edge flank, a plurality of chip breakers 7 are disposed on the peripheral edge flank along an axial direction of the cutter body, and chip breakers 4 are formed between the peripheral edges; the end surface of the cutting part 2 is provided with end blades 5, and chip flutes 6 are arranged between the end blades 5; the chip groove 6 is communicated with the chip groove 4; the peripheral edge 3 and the end edge 5 are smoothly connected through a circular arc edge.

Specifically, the plurality of chip breakers 7 extend along the peripheral edge 3 to the end of the peripheral edge 3 in sequence, the peripheral edge 3 is serrated, and the axial cross section of the chip breakers 7 is serrated. The peripheral edge 3 and the chip breaker groove 7 are arranged into triangle-like saw teeth, so that the sharpness and the strength of the edge part are increased, the edge is not easy to break, and the service life is prolonged

Preferably, the ratio of the base to the height of the axial section of the chip breaker 7 is 1.0-3.5. The width of the rear cutter face of the peripheral edge is 1.5mm-2.5mm, and the clearance angle formed by the rear cutter face of the peripheral edge is 10-25 degrees.

Specifically, the width of the chip breaker 7 in the circumferential direction of the cutting portion outer wall surface is 1.5 to 2.5mm, and the axial length of the cutting portion outer wall surface of the chip breaker 7 is 1 to 1.5 mm.

Preferably, the helical angle of the chip removing groove 4 is 35-40 degrees, and the chip removing groove is arranged at a large helical angle and is easier to remove chips.

Preferably, the cutting part 1 is coated with a Diamond Like Carbon (DLC) coating to increase strength, enhance corrosion resistance, and simultaneously reduce chip adhesion and improve chip removal performance.

Preferably, the wall surface of the chip groove 4 is polished, so that chips can be smoothly discharged during processing.

In summary, the rough milling cutter with the flat chip breakers provided by the embodiment of the invention has the advantages that the flat chip breakers 7 are sequentially arranged along the axial direction on the rear cutter face of the peripheral edge, so that the chip separation is carried out while cutting to avoid the difficulty of chip removal of longer chips or the scratch of the processed product; the peripheral edge 3 and the chip breaker groove 7 are arranged in a triangle-like sawtooth shape, so that the sharpness and the strength of the edge part are increased, the edge 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 rough milling cutter with the flat chip breakers is characterized by comprising 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, the peripheral edge is provided with a peripheral edge rear cutter surface, a plurality of chip breakers are arranged on the peripheral edge rear cutter surface along the axial direction of the cutter body, and chip breakers are formed between the peripheral edges; 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 chip discharge groove; the peripheral edge is smoothly connected with the end edge through the arc edge.

2. The roughing mill with flat chip breakers of claim 1 wherein a plurality of said chips extend in series along a peripheral edge to a peripheral edge extremity, said peripheral edge being serrated, said chips being serrated in axial cross-section.

3. The roughing milling cutter with flat chip breakers of claim 2 wherein said chip breaker axial cross-section has a base to height ratio of 1.0 to 3.5.

4. The roughing milling cutter with a flat chip breaker according to claim 1 wherein said peripheral edge flank has a width of 1.5mm to 2.5mm and said peripheral edge flank forms a relief angle of 10 ° to 25 °.

5. The roughing milling cutter with flat chip breakers according to claim 1 wherein said chip breakers have a width in the circumferential direction of the cutting portion outer wall surface of 1.5 to 2.5mm and said cutting portion outer wall surface of said chip breakers have an axial length of 1 to 1.5 mm.

6. The roughing milling cutter with flat chip breakers of claim 1 wherein said helix angle of said chip breakers is 35 ° to 40 °.

7. The rough milling cutter with flat chip breakers of claim 1 wherein the cutting portion is coated with a diamond-like coating.

8. The roughing milling cutter with a flat chip breaker as in claim 1 wherein said chip breaker wall face is polished.