CN213857295U - Flat-bottom cutter - Google Patents
Flat-bottom cutter Download PDFInfo
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- CN213857295U CN213857295U CN202022498237.0U CN202022498237U CN213857295U CN 213857295 U CN213857295 U CN 213857295U CN 202022498237 U CN202022498237 U CN 202022498237U CN 213857295 U CN213857295 U CN 213857295U
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- cutter
- friction
- outer end
- blind holes
- friction strip
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Abstract
The utility model belongs to the technical field of the cutter, especially, relate to a flat cutter, include the arbor and set up in the tool bit of arbor front end, be equipped with sword tooth and chip groove on the tool bit. The surface of the cutter head is provided with a titanium nitride hard layer; the tool bit is uniformly provided with a plurality of blind holes along the radial direction, the openings of the blind holes are positioned on the chip grooves, the tool bit further comprises a friction strip matched with the blind holes in shape and used for increasing friction force, the friction strip is positioned in the blind holes and in interference fit with the blind holes, the outer end surface of the friction strip is flush with the surface of the chip grooves, the outer end surface of the friction strip is provided with an anti-skidding groove, and the outer end surface of the friction strip is provided with a layer of metal wear-resistant coating. The utility model discloses when guaranteeing cutter hardness and wearability, thereby effectively improve its coefficient of surface friction and have better cutting force.
Description
Technical Field
The utility model belongs to the technical field of the cutter, especially, relate to a flat cutter.
Background
The end mill is the most used milling cutter on a numerical control machine tool, and cutting cutters are arranged on the cylindrical surface and the end surface of the end mill, and can cut simultaneously or independently. The milling cutter is mainly used for plane milling, groove milling, step surface milling and profiling milling. The flat bed knife is a common milling cutter and is mainly used for finish milling or rough milling, milling grooves, removing a large number of blanks and finish milling small horizontal planes or profiles. In 1972, bansha and lagulan in the united states developed physical vapor deposition to improve tool performance by coating hard layers of titanium carbide or titanium nitride on the surface of cemented carbide or high speed steel tools. The surface coating method combines the high strength and toughness of the matrix material with the high hardness and wear resistance of the surface layer, so that the composite material has better cutting performance.
The surface coating material has high hardness, high wear resistance and high temperature resistance. Therefore, compared with the uncoated cutter, the coated cutter allows the adoption of higher cutting speed, thereby improving the cutting processing efficiency; or the service life of the cutter can be prolonged under the same cutting speed. The cutting force of the coated tool is lower than that of an uncoated tool due to the lower coefficient of friction between the coated material and the material being machined. How to improve the cutting force of the coated cutter is a problem which needs to be solved urgently at present.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve prior art's weak point, and provide one kind when guaranteeing cutter hardness and wearability, thereby effectively improve its surface friction coefficient and improve the flat cutter of cutting force.
The utility model aims at solving the problems by the following technical scheme:
a flat bottom cutter, characterized in that: the cutter comprises a cutter shaft and a cutter head arranged at the front end of the cutter shaft, wherein cutter teeth and a chip groove are arranged on the cutter head;
the surface of the cutter head is provided with a titanium nitride hard layer; the tool bit is uniformly provided with a plurality of blind holes along the radial direction, the openings of the blind holes are positioned on the chip grooves, the tool bit further comprises a friction strip matched with the blind holes in shape and used for increasing friction force, the friction strip is positioned in the blind holes and in interference fit with the blind holes, the outer end surface of the friction strip is flush with the surface of the chip grooves, the outer end surface of the friction strip is provided with an anti-skidding groove, and the outer end surface of the friction strip is provided with a layer of metal wear-resistant coating.
Based on above-mentioned structure, the tool bit has better intensity, toughness and cutting performance, and the setting of rub strip makes it have better cutting force simultaneously.
Preferably, the anti-skidding groove is a circular groove which is uniformly arranged on the surface of the outer end of the friction strip.
Preferably, the anti-skidding groove is the bar connected in star of evenly seting up on the surface of rubbing strip outer end.
Preferably, the antiskid groove is the wave recess of evenly seting up on the friction strip outer end surface.
Preferably, the metal wear-resistant coating is a tungsten carbide wear-resistant coating.
Preferably, the friction strip of the present invention is made of hard alloy steel.
Preferably, the material of arbor and tool bit is carbide steel.
Compared with the prior art the utility model has the following characteristics and beneficial effect:
1. the titanium nitride hard layer arranged on the surface of the cutter head effectively improves the strength and toughness of the cutter, so that the cutting performance of the cutter is improved.
2. The friction force between the cutter and the processing material is improved by the arrangement of the friction strip and the anti-slip groove arranged on the outer end surface of the friction strip, so that the cutting force of the cutter is improved.
3. The metal wear-resistant coating arranged on the outer end surface of the friction strip improves the wear resistance of the surface of the friction strip, so that the service life of the friction strip is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the cross-sectional structure of the present invention.
Fig. 3 is a schematic view of the surface structure of the outer end of the rubbing strip of the present invention.
Fig. 4 is a schematic view of the surface structure of the outer end of the rubbing strip of the present invention.
Fig. 5 is a schematic view showing the surface structure of the outer end of the rubbing strip of the present invention.
In the figure: the cutter comprises a cutter shaft 1, a cutter head 2, cutter teeth 3, a chip groove 4, a titanium nitride hard layer 5, a blind hole 6, a friction strip 7, an anti-skidding groove 8 and a metal wear-resistant coating 9.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the flat-bottom cutter comprises a cutter shaft 1 and a cutter head 2 arranged at the front end of the cutter shaft 1, wherein cutter teeth 3 and scraps 4 are arranged on the cutter head 2. The cutter shaft 1 and the cutter head 2 are made of hard alloy steel. The surface of the tool bit 2 is provided with a titanium nitride hard layer 5. The titanium nitride hard layer 5 arranged on the surface of the tool bit 2 effectively improves the strength and toughness of the tool, so that the cutting performance of the tool is improved.
The tool bit 2 is uniformly provided with a plurality of blind holes 6 along the radial direction, the openings of the blind holes 6 are positioned on the chip grooves 4, the tool bit further comprises friction strips 7 matched with the blind holes 6 in shape and used for increasing friction force, and the friction strips 7 are positioned in the blind holes 6 and are in interference fit with the blind holes 6.
The outer end surface of the friction strip 7 is flush with the surface of the chip groove 4, and the outer end surface of the friction strip 7 is provided with an anti-skid groove 8. As shown in fig. 3, the anti-slip grooves 8 may be circular grooves uniformly formed on the outer end surfaces of the rubbing strips. As shown in fig. 4, the anti-slip grooves 8 may be bar-shaped grooves uniformly formed on the outer end surfaces of the rubbing strips 7. The anti-slip grooves 8 may also be wave-shaped grooves uniformly formed on the outer end surfaces of the rubbing strips, as shown in fig. 5. The provision of the rubbing strip 7 and the anti-slip grooves 8 provided on the outer end surface of the rubbing strip 7 increase the frictional force between the tool and the work material, thereby increasing the cutting force of the tool. The outer end surface of the friction strip 7 is provided with a layer of metal wear-resistant coating 9. The material of the rub strip 7 may be a hard alloy steel. The metallic wear resistant coating 9 may be a tungsten carbide wear resistant coating. The arrangement of the tungsten carbide wear-resistant coating improves the wear resistance of the surface of the friction strip 7, thereby prolonging the service life of the friction strip.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (7)
1. A flat bottom cutter, characterized in that: the cutter comprises a cutter shaft and a cutter head arranged at the front end of the cutter shaft, wherein cutter teeth and a chip groove are arranged on the cutter head;
the surface of the cutter head is provided with a titanium nitride hard layer; the tool bit is uniformly provided with a plurality of blind holes along the radial direction, the openings of the blind holes are positioned on the chip grooves, the tool bit further comprises a friction strip matched with the blind holes in shape and used for increasing friction force, the friction strip is positioned in the blind holes and in interference fit with the blind holes, the outer end surface of the friction strip is flush with the surface of the chip grooves, the outer end surface of the friction strip is provided with an anti-skidding groove, and the outer end surface of the friction strip is provided with a layer of metal wear-resistant coating.
2. The flat bottom knife according to claim 1, wherein: the anti-slip grooves are circular grooves which are uniformly formed in the outer end surfaces of the friction strips.
3. The flat bottom knife according to claim 1, wherein: the anti-slip grooves are strip-shaped grooves which are uniformly formed in the surface of the outer end of the friction strip.
4. The flat bottom knife according to claim 1, wherein: the anti-slip grooves are wave-shaped grooves which are uniformly formed in the outer end surfaces of the friction strips.
5. The flat bottom knife according to claim 1 or 2 or 3 or 4, wherein: the metal wear-resistant coating is a tungsten carbide wear-resistant coating.
6. The flat bottom knife according to claim 5, wherein: the friction strip is made of hard alloy steel.
7. The flat bottom knife according to claim 1, wherein: the cutter shaft and the cutter head are made of hard alloy steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022498237.0U CN213857295U (en) | 2020-11-03 | 2020-11-03 | Flat-bottom cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022498237.0U CN213857295U (en) | 2020-11-03 | 2020-11-03 | Flat-bottom cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213857295U true CN213857295U (en) | 2021-08-03 |
Family
ID=77052037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022498237.0U Active CN213857295U (en) | 2020-11-03 | 2020-11-03 | Flat-bottom cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213857295U (en) |
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2020
- 2020-11-03 CN CN202022498237.0U patent/CN213857295U/en active Active
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