CN210702770U - Milling cutter with end chip grooves - Google Patents
Milling cutter with end chip grooves Download PDFInfo
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- CN210702770U CN210702770U CN201921005412.9U CN201921005412U CN210702770U CN 210702770 U CN210702770 U CN 210702770U CN 201921005412 U CN201921005412 U CN 201921005412U CN 210702770 U CN210702770 U CN 210702770U
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- cutting edge
- milling cutter
- cutter
- chip
- chip groove
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- 238000003801 milling Methods 0.000 title claims abstract description 72
- 238000005520 cutting process Methods 0.000 claims abstract description 118
- 230000002093 peripheral effect Effects 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 4
- 238000003754 machining Methods 0.000 abstract description 10
- 238000005299 abrasion Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000007770 graphite material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a milling cutter with a chip groove at the end part, which comprises a milling cutter main body; the cutting edge is formed on the periphery of the front end of the milling cutter body, and the outer edge of the cutting edge, which is far away from the central shaft of the milling cutter body, extends to the front end of the milling cutter body in a spiral mode along the rotation direction of the milling cutter; the cutting edge comprises two first cutting edges and two second cutting edges, wherein the front ends of the cutting edges are connected with each other to form a clearance connection part; the first cutting edge and the second cutting edge are arranged at intervals; four chip discharge grooves are formed between the adjacent first cutting edge and the second cutting edge; the chip groove comprises an end chip groove and a spiral chip groove connected with the end chip groove; the notch of the end chip groove is connected with the void-avoiding connecting part; the utility model discloses a milling cutter can avoid the tool bit front end to remain the bits, improves work piece machining efficiency and precision.
Description
Technical Field
The utility model relates to a cutter structural design field especially relates to a milling cutter with tip chip groove.
Background
At present, the milling cutter for processing graphite-like workpieces, which is provided in the prior art, is provided with an end chip removal groove on a cutter head to cooperate with chip removal, but still has the problem that residual chips are remained at the front end of the cutter head, and the cutter is easy to wear in the using process, so that the processing precision and the service life of the cutter are influenced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a milling cutter with an end chip groove, which can improve the processing precision of workpieces and the service life of cutters.
The purpose of the utility model is realized by adopting the following technical scheme:
the milling cutter with the end chip grooves comprises a cutter handle and a cutter head; further comprising:
the milling cutter comprises a milling cutter body, a cutter head and a cutter handle, wherein the milling cutter body is in a shaft shape, the cutter head is formed at the front end of the milling cutter body, and the cutter handle is formed at the rear end of the milling cutter body;
a cutting edge formed on the outer periphery of the front end of the milling cutter body, wherein the outer edge of the cutting edge, which is far away from the central axis of the milling cutter body, extends spirally at the front end of the milling cutter body along the rotation direction of the milling cutter; the cutting edge comprises two first cutting edges and two second cutting edges, wherein the front ends of the cutting edges are connected with each other to form a clearance connection part; the first cutting edge and the second cutting edge are arranged at intervals;
chip grooves formed between adjacent cutting edges; the chip groove comprises a tip chip groove and a spiral chip groove, the front end notch of the tip chip groove is connected with the clearance connection part, and the spiral chip groove is connected with the rear end of the tip chip groove, so that chip materials at the front end of the tool bit are discharged by the chip groove.
Further, in the rotation direction of the milling cutter, a rake face is located on the front side of the cutting edge, and a flank face is located on the rear side of the cutting edge; the end chip flute comprises a first chip flute arranged between the front cutter surface of the first cutting edge and the rear cutter surface of the second cutting edge and a second chip flute arranged between the front cutter surface of the second cutting edge and the rear cutter surface of the first cutting edge;
the first chip groove with the notch of second chip groove all with keep away empty connecting portion and connect, just first chip groove by second cutting edge front end pass with the second chip groove is connected.
Further, still be equipped with the relief angle in the chip groove and keep away the face of vacancy, by spiral chip groove follows the direction of rotation slope of milling cutter is provided with the relief angle and keeps away the face of vacancy, the relief angle keep away the face with the back knife face with spiral chip groove connects.
Further, an outer peripheral edge is arranged between the rear tool face and the front tool face of the cutting edge;
the radial rake angle of the peripheral edge is 5 °.
Further, an outer peripheral edge is arranged between the rear tool face and the front tool face of the cutting edge;
the width of the peripheral edge is 0.4 +/-0.03 degrees.
Further, an outer peripheral edge is arranged between the rear tool face and the front tool face of the cutting edge;
the peripheral cutting tool comprises a first cutting edge section connected with the front tool surface and a second cutting edge section connected with the rear tool surface; the cutting edge angle of the first cutting edge section is 8 degrees, and the cutting edge angle of the second cutting edge section is 28 degrees.
Further, the width of the first blade section is 0.22 +/-0.03 mm.
Further, the notch of the end chip groove on the space-avoiding connecting part is chamfered.
Further, the minimum distance of the end chip grooves on the space-avoiding connecting portion is 0.01-0.03 mm.
Compared with the prior art, the beneficial effects of the utility model reside in that: the problem that the machining precision of a workpiece is affected due to the fact that residual scraps are remained at the front end of the cutter head in the cutting process can be avoided, and the abrasion speed of the cutter is reduced.
Drawings
Fig. 1 is a schematic end view of a milling cutter head according to the present invention;
fig. 2 is a schematic view of a three-dimensional structure of a milling cutter head of the present invention;
fig. 3 is a schematic structural view of a tool bit end surface of the milling cutter of the present invention;
fig. 4 is a radial sectional view and a schematic structural view of the milling cutter of the present invention;
fig. 5 is a front angle structure and a schematic view of the peripheral edge of the milling cutter of the present invention;
fig. 6 is a structure and a schematic view of clearance of the relief angle of the milling cutter of the present invention;
fig. 7 is a schematic view of the overall structure of the milling cutter of the present invention;
in the figure: 10. a cutter head; 101. a clearance connection part; 11. a cutting edge; 1101. a first cutting edge; 1102. a second cutting edge; 111. a rake face; 112. a flank face; 113. a peripheral edge; 12. an end chip groove; 121. a first chip discharge groove; 122. a second chip groove; 13. a spiral chip groove; 14. a relief surface at a relief angle; 20. a knife handle.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
As shown in fig. 1 to 7, the present embodiment provides a milling cutter with end chip flutes, which can be used for machining graphite materials and other workpieces, including a shank 20 and a tool bit 10, and further includes:
a milling cutter body having a shaft shape, the cutter head 10 being formed at a front end of the milling cutter body, and the holder 20 being formed at a rear end of the milling cutter body; the shank 20 is formed at the rear end of the milling cutter body; a milling cutter body having a substantially cylindrical shape, in which a cutting edge 11 is formed at least at a front end portion in the direction of the axis O of the milling cutter body, and a shank 20 is formed at a rear end portion in the direction of the axis O of the milling cutter body, wherein when the milling cutter is used, the shank 20 is held by a spindle of a machine tool or the like, and the milling cutter is rotated in the rotation direction T around the axis O, thereby performing cutting (turning) on a workpiece made of a graphite material or the like;
a cutting edge 11 formed on the outer periphery of the tip of the milling cutter body, the cutting edge 11 extending spirally along the tip of the milling cutter body in the direction of rotation of the milling cutter away from the outer edge of the center axis of the milling cutter body; the cutting edge 11 includes two first cutting edges 1101 and two second cutting edges 1102, wherein the front ends of the cutting edges are connected with each other to form a clearance connection part 101; the first cutting edge 1101 and the second cutting edge 1102 are arranged at intervals;
chip grooves formed between adjacent cutting edges 11; the chip grooves comprise end chip grooves 12 and spiral chip grooves 13, the front end notches of the end chip grooves 12 are connected with the clearance connection parts 101, and the spiral chip grooves 13 are connected to the rear ends of the end chip grooves 12, so that chip materials at the front ends of the tool bits 10 are discharged from the chip grooves;
in this embodiment, the cutting head 10 includes a cutting edge 11 and a chip groove; the front ends of the two first cutting edges 1101 are connected to form the clearance connecting portion 101, and all the end chip grooves 12 are connected with the clearance connecting portion 101, so that when the milling cutter is used for machining a workpiece, cutting generated by the front ends can be flexibly discharged into all the end chip grooves 12 along the clearance connecting portion 101, and then scraps are discharged through the spiral chip grooves 13, the cutter structure is favorably optimized, residual scraps at the front end of the cutter head 10 in the machining process are avoided, the machining precision and the machining quality of the workpiece are improved, and the abrasion speed of the cutter is reduced.
It should be noted that the space-saving connection portion 101 in the present embodiment refers not only to a portion where the two first cutting edges 1101 are connected to each other, but also to a portion where the front ends of the two first cutting edges 1101 guide the chips at the front end of the tool tip 10 to the end chip flute 12.
Preferably, in order to improve the chip removal efficiency, in the rotation direction T of the milling cutter, located in front of the cutting edge 11 is a rake surface 111, and located behind the cutting edge 11 is a flank surface 112; the end chip flute 12 includes a first chip flute 121 provided between the rake face 111 of the first cutting edge 1101 and the flank face 112 of the second cutting edge 1102, and further includes a second chip flute 122 provided between the rake face 111 of the second cutting edge 1102 and the flank face 112 of the first cutting edge 1101; the notches of the first chip flute 121 and the second chip flute 122 are connected with the space-avoiding connecting part 101, and the first chip flute 121 passes through the front end of the second cutting edge 1102 to be connected with the second chip flute 122; that is, the front end of the second cutting edge 1102 is not connected to the foremost end of the tool tip 10, and the first chip flute 121 is transversely spaced between the front end of the second cutting edge 1102 and the clearance connection portion 101; along the rotating direction T, the second chip groove 122 is positioned at the front side of the first chip groove 121, so that when the milling cutter is rotated, part of chip materials in the first chip groove 121 can be thrown to the second chip groove 122, the chip removal effect is good, and further the cutting is divided; in general, the milling cutter of the embodiment can avoid residual scraps left at the front end of the cutter head 10 in the cutting process, improve the machining precision of a workpiece, and reduce the abrasion speed of the cutter.
Preferably, in order to improve the chip discharging efficiency, a relief surface 14 is further provided in the chip discharging groove, the relief surface 14 is obliquely provided in the rotation direction of the milling cutter by the spiral chip discharging groove 13, and the relief surface 14 connects the relief surface 112 and the spiral chip discharging groove 13.
Further, as shown in fig. 1 and 4, an outer peripheral edge 113 is formed between the flank surface 112 and the rake surface 111 of the cutting edge 11; when the milling cutter is in operation, the portion mainly contributing to the cutting effect is the peripheral edge 113, and the radial rake angle of the peripheral edge 113 means an angle a between imaginary extension planes of the rake face 111 adjacent to the peripheral edge 113 along a radial auxiliary line in the axis O in the cross-sectional view of the milling cutter body in fig. 31Radial rake angle A of the peripheral edge 1131The cutting performance of the cutter can be improved by 5 degrees, the sharpness of the cutting edge 11121 is improved, so that the cutting force, the cutting heat and the cutting power are reduced, the machining precision and the quality of a machined surface are improved, the durability of the cutter can be improved, and the cutting efficiency is improved.
Preferably, the peripheral edge 113 is a spherical arc surface, and the surface precision of the machined workpiece is high.
Preferably, a peripheral edge 113 is formed between the flank surface 112 and the rake surface 111 of the cutting edge 11; as shown in fig. 4, the width of the peripheral edge 113 is 0.4 ± 0.03 °.
Preferably, a peripheral edge 113 is formed between the flank surface 112 and the rake surface 111 of the cutting edge 11; as shown in fig. 5, in order to improve cutting efficiency, the peripheral cutting edge 113 includes a first edge section connected to the rake surface 111 and a second edge section connected to the flank surface 112; the cutting edge angle of the first cutting edge section is 8 degrees, the cutting edge angle of the second cutting edge section is 28 degrees, and a transition cutting surface is formed along the rotating direction T through the matching of the two cutting edge sections, so that the cutting efficiency is improved.
Preferably, the width of the first edge section is 0.22 ± 0.03 mm.
Preferably, as shown in fig. 3, the notch of the end chip groove 12 on the empty-avoiding connection portion 101 has a chamfer with a radius of 0.03mm, and the empty-avoiding connection portion 101 is guided to the end chip groove 12 by the chamfer, so that the chip removal efficiency is improved.
Preferably, as shown in fig. 3, the minimum distance between the connecting parts 101 is 0.01 mm-0.03 mm, which does not affect the cutting effect of the first cutting edge 1101, and simultaneously ensures that the chips of the connecting parts 101 flow to the two main chip removal grooves, thereby ensuring the chip removal effect.
It should be noted that the edge runout of the cutting edge 11 of the present invention is less than 0.005 mm.
Preferably, the shank 20 and the cutting head 10 of the present embodiment are connected by a transition connecting body, the transition connecting body is in the shape of a circular truncated cone, and the inclination angle of the tapered side surface of the transition connecting body is preferably 15 ° ± 1, and as shown in fig. 7, the sum of the two inclination angles is 30 degrees.
Compared with the prior art, the beneficial effects of the utility model reside in that: the problem that the machining precision of a workpiece is affected due to the fact that residual scraps are left at the front end of the cutter head 10 in the cutting process can be avoided, and the abrasion speed of the cutter is reduced.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (9)
1. The milling cutter with the end chip grooves comprises a cutter handle and a cutter head, and is characterized by comprising
The milling cutter comprises a milling cutter body, a cutter head and a cutter handle, wherein the milling cutter body is in a shaft shape, the cutter head is formed at the front end of the milling cutter body, and the cutter handle is formed at the rear end of the milling cutter body;
a cutting edge formed on the outer periphery of the front end of the milling cutter body, wherein the outer edge of the cutting edge, which is far away from the central axis of the milling cutter body, extends spirally at the front end of the milling cutter body along the rotation direction of the milling cutter; the cutting edge comprises two first cutting edges and two second cutting edges, wherein the front ends of the cutting edges are connected with each other to form a clearance connection part; the first cutting edge and the second cutting edge are arranged at intervals;
chip grooves formed between adjacent cutting edges; the chip groove comprises a tip chip groove and a spiral chip groove, the front end notch of the tip chip groove is connected with the clearance connection part, and the spiral chip groove is connected with the rear end of the tip chip groove, so that chip materials at the front end of the tool bit are discharged by the chip groove.
2. The milling cutter with end flutes as defined in claim 1, wherein:
in the rotation direction of the milling cutter, a front cutter face is positioned on the front side of the cutting edge, and a rear cutter face is positioned on the rear side of the cutting edge; the end chip flute comprises a first chip flute arranged between the front cutter surface of the first cutting edge and the rear cutter surface of the second cutting edge and a second chip flute arranged between the front cutter surface of the second cutting edge and the rear cutter surface of the first cutting edge;
the first chip groove with the notch of second chip groove all with keep away empty connecting portion and connect, just first chip groove by second cutting edge front end pass with the second chip groove is connected.
3. The milling cutter with end flutes as defined in claim 2, wherein:
still be equipped with the relief angle in the chip groove and keep away the face of vacancy, by spiral chip groove follows milling cutter's direction of rotation slope is provided with the relief angle and keeps away the face of vacancy, the relief angle keep away the face will the back knife face with spiral chip groove connects.
4. The milling cutter with the end chip flute according to any one of claims 1 to 3, wherein:
a peripheral edge is arranged between the rear cutter face and the front cutter face of the cutting edge;
the radial rake angle of the peripheral edge is 5 °.
5. The milling cutter with the end chip flute according to any one of claims 1 to 3, wherein:
a peripheral edge is arranged between the rear cutter face and the front cutter face of the cutting edge;
the width of the peripheral edge is 0.4 +/-0.03 degrees.
6. The milling cutter with the end chip flute according to any one of claims 1 to 3, wherein:
a peripheral edge is arranged between the rear cutter face and the front cutter face of the cutting edge;
the peripheral cutting tool comprises a first cutting edge section connected with the front tool surface and a second cutting edge section connected with the rear tool surface; the cutting edge angle of the first cutting edge section is 8 degrees, and the cutting edge angle of the second cutting edge section is 28 degrees.
7. The milling cutter with end flutes of claim 6, wherein:
the width of the first edge section is 0.22 +/-0.03 mm.
8. The milling cutter with end flutes as defined in claim 2, wherein:
the notch of the end chip groove on the space-avoiding connecting part is provided with a chamfer.
9. The milling cutter with end flutes as defined in claim 2, wherein:
the minimum distance of the end chip grooves on the space-avoiding connecting part is 0.01-0.03 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921005412.9U CN210702770U (en) | 2019-06-28 | 2019-06-28 | Milling cutter with end chip grooves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921005412.9U CN210702770U (en) | 2019-06-28 | 2019-06-28 | Milling cutter with end chip grooves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210702770U true CN210702770U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921005412.9U Active CN210702770U (en) | 2019-06-28 | 2019-06-28 | Milling cutter with end chip grooves |
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| CN (1) | CN210702770U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113333835A (en) * | 2021-04-27 | 2021-09-03 | 株洲钻石切削刀具股份有限公司 | Chamfering end mill |
| JP7360506B1 (en) | 2022-06-08 | 2023-10-12 | ダイジ▲ェ▼ット工業株式会社 | taper end mill |
-
2019
- 2019-06-28 CN CN201921005412.9U patent/CN210702770U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113333835A (en) * | 2021-04-27 | 2021-09-03 | 株洲钻石切削刀具股份有限公司 | Chamfering end mill |
| JP7360506B1 (en) | 2022-06-08 | 2023-10-12 | ダイジ▲ェ▼ット工業株式会社 | taper end mill |
| JP2023179961A (en) * | 2022-06-08 | 2023-12-20 | ダイジ▲ェ▼ット工業株式会社 | Tapered-end mill |
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