CN210115496U - Lengthened polycrystalline diamond staggered-tooth spiral blade end milling cutter - Google Patents
Lengthened polycrystalline diamond staggered-tooth spiral blade end milling cutter Download PDFInfo
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- CN210115496U CN210115496U CN201920175219.3U CN201920175219U CN210115496U CN 210115496 U CN210115496 U CN 210115496U CN 201920175219 U CN201920175219 U CN 201920175219U CN 210115496 U CN210115496 U CN 210115496U
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- polycrystalline diamond
- helical
- blade
- end mill
- staggered
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Abstract
The utility model discloses an elongated polycrystalline diamond staggered-tooth helical blade end mill, which comprises a tool handle and a tool body which are connected with each other, wherein a helical flute is arranged at the front section of the tool body; and a spiral cutting edge is arranged on the polycrystalline diamond composite blade. The beneficial effects of the utility model reside in that: the utility model discloses the precision is high, and is efficient, has solved the technical problem of the precision finishing of cavity deep trouth in the modern manufacturing.
Description
Technical Field
The utility model relates to a spiral sword end mill technical field especially relates to an add elongated polycrystalline diamond side by side tooth spiral sword end mill.
Background
The cutting processing of the deep groove structure in cavity parts in the modern manufacturing fields of aerospace, automobiles, medical instruments, photoelectrons, computers, sensors, precision machinery, radars, optics, molds, communication and the like has high requirements on the groove width dimension precision and surface roughness, and particularly, the deep groove processing is very difficult on difficult-to-process materials such as GFRP, CFRP, MMC, FRM (SiC/AL), titanium alloy, aluminum alloy, titanium aluminum alloy and the like.
The conventional coated hard alloy end milling cutter for processing the side surface and the bottom surface of the deep groove of the cavity has the main defects of quick abrasion, short service life, poor precision, low efficiency and high cost. The polycrystalline diamond (PCD) material forms diamond microcrystals at high temperature (1560 ℃) and high pressure (16GPa), and is a polycrystalline diamond material which is formed by bonding and sintering metal Co, Ni and the like into a whole, the hardness can reach HV 6000-8000, the heat resistance can reach about 700-800 ℃, the allowable cutting speed on a machining center is 3-10 times higher than that of hard alloy, the abrasion of the hard alloy end mill is much slower when the hard alloy composite material which is difficult to machine nonmetal and nonferrous metal is cut, and the durability of a cutter can be improved by 5-10 times. However, the PCD is pressed and sintered into a wafer shape, the diameter is generally about 50-80 mm, the total thickness is 1-2 mm, and the thickness is commonly 1.6mm, so that the conventional manufacturing method is difficult to manufacture a blade with the spiral length exceeding 60-100 mm due to the limitation of the size and the shape of the PCD composite wafer, and the rake face cannot form a spiral surface.
At present, the technology and equipment for processing the lengthened PCD staggered helical blade are mature, and particularly, the processing of the cutting edge of the lengthened PCD staggered helical blade end mill is easy to realize due to the appearance of a seven-axis numerical control five-axis linkage laser cutting edge processing machine tool (such as a German DMG MORI laser machine).
However, the lengthened PCD staggered-tooth end mill with high precision and high efficiency does not appear in the market and scientific literature so far, and the precision machining technology of the deep groove of the cavity in the modern manufacturing industry has some problems.
The present invention has been advantageously explored and attempted to solve the above problems, and it is against this background that the solutions described below have been made.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough and the defect to prior art provide an elongated polycrystalline diamond side sets spiral sword end mill.
The utility model provides a technical problem can adopt following technical scheme to realize:
a lengthened polycrystalline diamond staggered-tooth helical-blade end mill comprises a cutter handle and a cutter body which are connected with each other, wherein a helical flute is formed in the front section of the cutter body, and the end mill is characterized in that blade grooves with staggered positions are respectively formed in helical blades on two sides of the helical flute, and a polycrystalline diamond composite blade is welded in each blade groove; and a spiral cutting edge is arranged on the polycrystalline diamond composite blade.
In a preferred embodiment of the present invention, the helical angle β of the helical cutting edge is 8 to 35 °, the front angle γ o is 0 to 11 °, the rear angle α o is 5 to 10 °, and the end edge offset angle ψ is 0.5 to 2 °.
In a preferred embodiment of the present invention, the helical flutes are left-handed or right-handed helical flutes.
In a preferred embodiment of the present invention, the groove structure of the spiral flute is a straight line or an arc or a straight line or a quadratic curve.
In a preferred embodiment of the present invention, the handle is made of structural alloy steel.
In a preferred embodiment of the utility model, the knife handle is a straight handle or a Morse taper handle or a 7:24 taper handle or a HSK1:10 short taper hollow handle.
In a preferred embodiment of the present invention, the polycrystalline diamond compact blade is a 25 μm coarse-grained polycrystalline diamond compact blade, a 10 μm medium-grained polycrystalline diamond compact blade, or a 2 μm fine-grained polycrystalline diamond compact blade.
Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:
the utility model discloses the precision is high, and is efficient, has solved the technical problem of the precision finishing of cavity deep trouth in the modern manufacturing.
Drawings
Fig. 1 is the schematic structural diagram of the present invention after opening.
Fig. 2 is a sectional view of the middle blade body of the present invention.
Fig. 3 is a schematic view of the overall cross-sectional structure of the present invention.
Fig. 4 is a schematic cross-sectional structure view of a cutter body of the utility model with a linear flute notch.
Fig. 5 is the utility model discloses well flute notch is the cross section structure sketch map of the cutter body of circular arc type.
Fig. 6 is the utility model discloses well flute notch is the cross section structure sketch map of the cutter body of straight line circular arc type.
Fig. 7 is the utility model discloses well flute notch is the cross section structure sketch of the cutter body of quadratic curve circular arc type.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 7, the elongated polycrystalline diamond end mill with staggered helical blades shown in the figures comprises a tool shank 100 and a tool body 200 which are connected with each other, wherein two helical flutes 210a and 210b are formed at the front section of the tool body 200, specifically, referring to fig. 1, a left helical flute 210a and a right helical flute 210 b.
According to actual processing requirements, the groove-shaped structures of the spiral chip grooves 210a and 210b are linear or arc-shaped or linear arc-shaped or quadratic curve arc-shaped.
The helix angle β of the helical cutting edge 310 is 8-35 DEG, the rake angle is 0-11 DEG, the included angle gamma between the helical cutting edge 310 and the diameter tangent point of the circumference is 5-10 DEG, the relief angle α DEG is 5-10 DEG, and the offset angle phi of the end cutting edge is 0.5-2 DEG
The diamond grain diameter of the polycrystalline diamond compact 300 may be 25 μm or 10 μm or 2 μm, which may be determined based on the hardness and strength of the workpiece material.
In order to meet the requirements in actual machining working conditions, the tool holder 100 is made of alloy structural steel such as 42CrMo and 36 CrMoTi. And the structure of the knife handle has four types: the straight shank, the Morse taper shank, the 7:24 taper shank or the HSK1:10 short taper hollow shank can meet the requirements of various machine tool spindle interfaces.
Due to the adoption of the structure, the utility model has the main characteristics that:
the structure is characterized in that:
the lengthened PCD end mill with staggered spiral blades can be suitable for various tool shank structures (straight shank, 7:24 taper shank, Morse taper shank, HSK high-speed cutting tool shank and the like) so as to meet the requirements of various machine tool spindle interfaces;
the lengthened PCD staggered-tooth spiral-blade end mill can be designed into a right spiral groove or a left spiral groove, and chips are discharged upwards when the right spiral left blade cuts, so that the end mill is suitable for machining blind deep grooves; the left-spiral left-edge milling cutter can discharge chips downwards, and is suitable for processing a single side face which can discharge the chips downwards and has a long depth;
the lengthened PCD staggered-tooth spiral-edge end mill performs intermittent cutting, different groove types are designed according to the physical and mechanical properties and the cutting chip forms of different workpiece materials through the computer three-dimensional simulation space meshing principle or reverse engineering, and the chip removal is smooth;
the PCD material of the lengthened PCD end mill with staggered spiral blades can flexibly select the diameter of diamond grains according to the physical and mechanical properties of the workpiece, such as hardness, strength, toughness, heat conductivity coefficient and the like;
the geometric parameters of the lengthened PCD staggered-tooth spiral-edge end mill can be reasonably designed according to the material of a workpiece, and the machining is supported by software of a seven-axis numerical control five-axis linkage laser cutting edge machining machine;
the spiral cutting edge of the lengthened PCD staggered-tooth spiral-edge end mill is clamped at one time to finish the edge grinding, the cutting edge has small jump, and the cutting edge gradually cuts in and cuts out, so the cutting is stable;
the lengthened PCD end mill with staggered spiral blades can be designed and manufactured into a multi-tooth symmetrical or asymmetrical structure according to the diameter of the blade.
The application characteristics are as follows:
can cut and process difficult-to-process materials such as titanium alloy, aluminum and its alloy, copper and its alloy, GFRP (glass fiber reinforced plastics), CFRP (carbon fiber composite), MMC (metal matrix composite), FRM (fiber reinforced metal, such as SiC/Al, Al2O 3/Al) and the like;
the device can be applied to machining centers and combined machines with enough rigidity and large torque;
the side plane and the curved surface with gaps or discontinuity in the axial direction can be processed;
the roughness Ra of the machined surface of the workpiece is less than or equal to 0.4 mu m;
the cutter has long service life, short cutter changing time, high production efficiency, stable processing quality and obvious production cost reduction.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A lengthened polycrystalline diamond staggered-tooth helical-blade end mill comprises a cutter handle and a cutter body which are connected with each other, wherein a helical flute is formed in the front section of the cutter body, and the end mill is characterized in that blade grooves with staggered positions are respectively formed in helical blades on two sides of the helical flute, and a polycrystalline diamond composite blade is welded in each blade groove; and a spiral cutting edge is arranged on the polycrystalline diamond composite blade.
2. The end mill with the helical cutting edge for the elongated polycrystalline diamond with the staggered teeth as set forth in claim 1, wherein the helical cutting edge has a helix angle β of 8 to 35 °, a front angle γ o of 0 to 11 °, a rear angle α o of 5 to 10 °, and an end cutting offset angle ψ of 0.5 to 2 °.
3. The end mill of claim 1, wherein the helical flutes are left-handed or right-handed helical flutes.
4. The end mill with the elongated polycrystalline diamond and the staggered helical blade of claim 1, wherein the groove-shaped structure of the helical flute is a straight line or an arc, a straight line or a quadratic curve.
5. The end mill with the elongated polycrystalline diamond end mill with the staggered helical cutting edges as claimed in claim 1, wherein the tool shank is made of structural alloy steel.
6. The end mill with the elongated polycrystalline diamond and the staggered helical blade as claimed in claim 1, wherein the tool shank is a straight shank or a morse taper shank or a 7:24 taper shank or a HSK1:10 short taper hollow shank.
7. The end mill of claim 1, wherein the polycrystalline diamond compact blade is a 25 μm coarse-grain polycrystalline diamond compact blade, a 10 μm medium-grain polycrystalline diamond compact blade, or a 2 μm fine-grain polycrystalline diamond compact blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920175219.3U CN210115496U (en) | 2019-01-31 | 2019-01-31 | Lengthened polycrystalline diamond staggered-tooth spiral blade end milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920175219.3U CN210115496U (en) | 2019-01-31 | 2019-01-31 | Lengthened polycrystalline diamond staggered-tooth spiral blade end milling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210115496U true CN210115496U (en) | 2020-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920175219.3U Expired - Fee Related CN210115496U (en) | 2019-01-31 | 2019-01-31 | Lengthened polycrystalline diamond staggered-tooth spiral blade end milling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210115496U (en) |
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2019
- 2019-01-31 CN CN201920175219.3U patent/CN210115496U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200228 Termination date: 20210131 |
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| CF01 | Termination of patent right due to non-payment of annual fee |