CN210702771U - Milling cutter with tip chip groove - Google Patents
Milling cutter with tip chip groove Download PDFInfo
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- CN210702771U CN210702771U CN201921006690.6U CN201921006690U CN210702771U CN 210702771 U CN210702771 U CN 210702771U CN 201921006690 U CN201921006690 U CN 201921006690U CN 210702771 U CN210702771 U CN 210702771U
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- cutting edge
- chip
- milling cutter
- cutter
- groove
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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 end chip grooves comprise main chip grooves and auxiliary chip grooves; the front end notch of the main chip groove is connected with the void-avoiding connecting part; the main chip groove penetrates through the front end of the second cutting edge and is connected with the auxiliary chip groove; 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:
a milling cutter with a chip groove at the end part comprises a cutter handle and a cutter head arranged at one end of the cutter handle; 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; 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;
four chip discharge grooves are formed between the adjacent first cutting edge and the second cutting edge; the chip grooves comprise end chip grooves and spiral chip grooves connected with the end chip grooves; the end chip grooves comprise main chip grooves and auxiliary chip grooves;
the main chip groove is formed in the front tool face of the first cutting edge and the rear tool face of the second cutting edge, and a front end notch of the main chip groove is connected with the clearance connection part, so that chips at the front end of the cutter head are discharged from the main chip groove;
the auxiliary chip discharge groove is formed in the front cutter face of the second cutting edge and between the rear cutter faces of the first cutting edge, the main chip discharge groove is formed in the rear cutter face of the second cutting edge, the front end of the second cutting edge penetrates through the main chip discharge groove and is connected with the auxiliary chip discharge groove, and therefore chip materials of the main chip discharge groove are discharged in a shunting mode through the auxiliary chip discharge groove.
Further, the main chip groove includes first chip groove and second chip groove, first chip groove is close the rake face setting of first cutting edge, the second chip groove is close the back knife face setting of second cutting edge, first chip groove with keep away empty connecting portion and connect, notch one side of second chip groove with keep away empty connecting portion and connect, the opposite side with assist the chip groove and connect.
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 circumferential width of the peripheral blade is 0.4 ± 0.03 °.
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 10 degrees, and the cutting edge angle of the second cutting edge section is 28 degrees.
Further, the circumferential width of the first blade section is 0.15 +/-0.03 mm.
Further, the notch of the main chip groove on the space-avoiding connection part has a chamfer.
Further, the radial distance between the two main chip grooves 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 structural view of a tool bit end face of the milling cutter of the present invention;
fig. 3 is a radial sectional view and a schematic structural view of the milling cutter of the present invention;
fig. 4 is a schematic front angle structure diagram of the peripheral edge of the milling cutter of the present invention;
fig. 5 is a schematic structural view of clearance of the relief angle of the milling cutter of the present invention;
fig. 6 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 main chip groove; 1211. a first chip discharge groove; 1212. a second chip groove; 122. auxiliary chip grooves; 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 6, the present embodiment provides a milling cutter having end chip flutes, which can be used for machining a workpiece such as a graphite material, including:
a milling cutter body having a shaft shape, a cutter head 10 formed at a front end of the milling cutter body, and a holder 20 formed at a 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;
the cutting edge 11 is formed on the periphery of the front end of the milling cutter body, and the outer edge of the cutting edge 11, which is far away from the central shaft of the milling cutter body, spirally extends to the front end of the milling cutter body along the rotation direction of the milling cutter; the cutting edge 11 includes two first cutting edges 1101 whose edge front ends are connected to each other to form the clearance connection portion 101, and also includes two second cutting edges 1102; the first cutting edge 1101 and the second cutting edge 1102 are arranged at intervals; in the rotation direction T of the milling cutter, a rake surface 111 is located on the front side of the cutting edge 11, and a flank surface 112 is located on the rear side of the cutting edge 11;
four chip discharge grooves are formed between the adjacent first cutting edge 1101 and the adjacent second cutting edge 1102, and each cutting edge 11 and each chip discharge groove are alternately distributed along the axial direction; the chip grooves comprise end chip grooves 12 and spiral chip grooves 13 connected with the end chip grooves 12; the end chip flute 12 includes a primary chip flute 121 and a secondary chip flute 122;
the main chip grooves 121 are formed in the rake surface 111 of the first cutting edge 1101 and the flank surface 112 of the second cutting edge 1102, and the front end notches of the main chip grooves 121 are connected to the clearance connection portion 101, so that chips at the front end of the tool tip 10 are discharged by the main chip grooves 121;
the auxiliary chip flutes 122 are arranged between the rake surface 111 of the second cutting edge 1102 and the flank surface 112 of the first cutting edge 1101, and the main chip flutes 121 penetrate through the front end of the second cutting edge 1102 to be connected with the auxiliary chip flutes 122, so that chips in the main chip flutes 121 are shunted and discharged by the auxiliary chip flutes 122; that is, the tip of the second cutting edge 1102 is not connected to the foremost tip of the tip, and the main chip flutes 121 laterally separate the tip of the second cutting edge 1102 from the space-saving connection portion 101.
In the embodiment, the space-avoiding connecting part 101 is formed by connecting the two first cutting edges 1101, so that the chips at the front end of the milling cutter can be discharged along the main chip grooves 121 connected with the space-avoiding connecting part 101, and discharged to the spiral chip grooves 13 or the auxiliary chip grooves 122 directly connected with the main chip grooves 121, and the chips discharged into the auxiliary chip grooves 122 are connected along the spiral chip grooves 13 connected with the auxiliary chip grooves 122, so that the discharged materials generated at the end part of the milling cutter in the processing process can be discharged to the spiral chip grooves 13 from the chip grooves 12 at each end part, and the optimization of the cutter structure is facilitated; so that: (1) the residual cutting at the front end of the cutter head 10 (namely the clearance connection part 101) can be drained by drainage of the main chip discharge groove 121 without affecting the processing effect of the cutting edge 11; (2) by positioning the auxiliary chip discharge groove 122 at the front side of the main chip discharge groove 121 along the rotation direction T, when the milling cutter rotates, part of chips in the main chip discharge groove 121 can be thrown to the auxiliary chip discharge groove 122, and the chip discharge effect is good; 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.
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 discharge efficiency, the main chip discharge groove 121 includes a first chip discharge groove 1211 and a second chip discharge groove 1212, the first chip discharge groove 1211 is disposed near the rake surface 111 of the first cutting edge 1101, the second chip discharge groove 1212 is disposed near the flank surface 112 of the second cutting edge 1102, the first chip discharge groove 1211 is connected to the space-saving connection portion 101, one side of a notch of the second chip discharge groove 1212 is connected to the space-saving connection portion 101, and the other side is connected to the auxiliary chip discharge groove 122; the cutting in the first flute 1211 leads directly to the rotary flute, and the cutting in the second flute 1212 serves to lead to the adjacent auxiliary flute 122; through reposition of redundant personnel, can effectively improve the chip removal efficiency.
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.
Preferably, as shown in fig. 1 and 3, 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 11 is improved, so that the cutting force, the cutting heat and the cutting power are reduced, the processing precision and the processing surface quality are improved, meanwhile, 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. 3, the circumferential 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. 4, 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 edge angle of the first edge section is 10 degrees, the edge angle of the second edge section is 28 degrees, a transition cutting face is formed along the rotating direction T through the matching of the two edge sections, the cutting efficiency is favorably improved, meanwhile, the arrangement of the edge angles of the two edge sections is also favorable for reducing the friction between the cutting edge 11 and the workpiece processing surface, and the durability of the cutter is favorably improved.
Preferably, the circumferential width of the first blade section is 0.15 ± 0.03 mm.
Preferably, as shown in fig. 2, the notch of the main chip-removing groove 121 on the space-avoiding connection portion 101 has a chamfer with a radius of 0.03mm, and by arranging the chamfer, the chips of the space-avoiding connection portion 101 are guided to the main chip-removing groove 121, so that the chip removal efficiency is improved.
Preferably, as shown in fig. 2, the minimum distance between the connecting parts 101 is 0.01mm to 0.03mm, 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 into the two main chip removal grooves 121, 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. 6, 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. A milling cutter with end chip grooves comprises a cutter handle and a cutter head arranged at one end of the cutter handle, 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; 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;
four chip discharge grooves are formed between the adjacent first cutting edge and the second cutting edge; the chip grooves comprise end chip grooves and spiral chip grooves connected with the end chip grooves; the end chip grooves comprise main chip grooves and auxiliary chip grooves;
the main chip groove is formed in the front tool face of the first cutting edge and the rear tool face of the second cutting edge, and a front end notch of the main chip groove is connected with the clearance connection part, so that chips at the front end of the cutter head are discharged from the main chip groove;
the auxiliary chip discharge groove is formed in the front cutter face of the second cutting edge and between the rear cutter faces of the first cutting edge, the main chip discharge groove is formed in the rear cutter face of the second cutting edge, the front end of the second cutting edge penetrates through the main chip discharge groove and is connected with the auxiliary chip discharge groove, and therefore chip materials of the main chip discharge groove are discharged in a shunting mode through the auxiliary chip discharge groove.
2. The milling cutter with end flutes as defined in claim 1, wherein:
the main chip groove includes first chip groove and second chip groove, first chip groove is close the rake face setting of first cutting edge, the second chip groove is close the back knife face setting of second cutting edge, first chip groove with keep away empty connecting portion and connect, notch one side of second chip groove with keep away empty connecting portion and connect, the opposite side with the assistance 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 circumferential width of the peripheral blade is 0.4 ± 0.03 °.
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 10 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 circumferential width of the first blade section is 0.15 +/-0.03 mm.
8. The milling cutter with end flutes as defined in claim 2, wherein:
the notch of the main 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 radial distance between the two main chip grooves is 0.01-0.03 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921006690.6U CN210702771U (en) | 2019-06-28 | 2019-06-28 | Milling cutter with tip chip groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921006690.6U CN210702771U (en) | 2019-06-28 | 2019-06-28 | Milling cutter with tip chip groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210702771U true CN210702771U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921006690.6U Active CN210702771U (en) | 2019-06-28 | 2019-06-28 | Milling cutter with tip chip groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210702771U (en) |
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2019
- 2019-06-28 CN CN201921006690.6U patent/CN210702771U/en active Active
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