CN210702768U - Milling cutter for machining graphite workpiece - Google Patents
Milling cutter for machining graphite workpiece Download PDFInfo
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- CN210702768U CN210702768U CN201920261890.XU CN201920261890U CN210702768U CN 210702768 U CN210702768 U CN 210702768U CN 201920261890 U CN201920261890 U CN 201920261890U CN 210702768 U CN210702768 U CN 210702768U
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- milling cutter
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Abstract
The utility model is suitable for a cutter structural design field discloses a milling cutter for processing graphite work piece, which comprises a cutter handle and a cutter head arranged at one end of the cutter handle, wherein the outer diameter of the cutter handle and the outer diameter of the cutter head are both 4mm +/-0.1 mm; the tool bit is equipped with four cutting edges, four margins, four tip chip grooves and four spiral chip grooves, four cutting edges along circumference interval distribution in the tip of the tool bit back to the handle of a knife, four margins extend in the lateral part of tool bit respectively from the outward flange spiral of four cutting edges, four spiral chip grooves are located respectively between each two adjacent margins, four tip chip grooves are located respectively between each two adjacent cutting edges, and the one end of four tip chip grooves is handed over in the center pin of tool bit, the other end communicates with four spiral chip grooves respectively, the cutting face radius range value of cutting edge is 0.85mm 0.05 mm. The utility model provides the high milling cutter is to planar cutting performance for the surface finish of graphite work piece is better.
Description
Technical Field
The utility model relates to a cutter structural design field especially relates to a milling cutter for processing graphite work piece.
Background
The milling cutter for processing the graphite workpiece, which is provided by the prior art, is provided with two cutting edges on a cutter head, the radius of a cutting surface of each cutting edge is 1.5mm, and the outer diameter of the cutter head is smaller than that of a cutter handle. The milling cutter is used for processing graphite workpieces, and has the technical problems of low processing efficiency, quick tool abrasion, low processing precision and poor plane cutting performance in specific application.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a milling cutter for processing graphite work piece, it aims at solving current milling cutter that is used for processing graphite work piece because structural design is unreasonable to lead to the technical problem that machining efficiency is low, cutter wearing and tearing are fast, the machining precision is low.
In order to achieve the above purpose, the utility model provides a scheme is: the milling cutter for machining the graphite workpiece comprises a cutter handle and a cutter head arranged at one end of the cutter handle, wherein the outer diameter of the cutter handle is 4mm +/-0.1 mm, and the outer diameter of the cutter head is 4mm +/-0.1 mm; the cutter head comprises a core shaft, four cutting edges, four lands, four end chip grooves and four spiral chip grooves, the four cutting edges are distributed at intervals along the circumferential direction at the end part of the cutter head back to the cutter handle, the four lands are respectively spirally extended at the side part of the cutter head from the outer edge of the cutter head which is far away from the center shaft of the cutter head, the four spiral chip grooves are respectively arranged between every two adjacent lands and are respectively distributed at the periphery of the core shaft along the circumferential direction, the four end chip grooves are respectively arranged between every two adjacent cutting edges, one ends of the four end chip grooves are crossed at the center shaft of the cutter head, the other ends of the four end chip grooves are respectively communicated with the four spiral chip grooves, the cutting edges are provided with cutting surfaces back to the cutter handle, and the cutting surfaces are smooth cambered surfaces, the radius range value of the cutting surface is 0.85mm +/-0.05 mm, and the outer diameter of the mandrel is 2.3mm +/-0.1 mm.
Optionally, the cutting face is a spherical arc face.
Optionally, four cutting edges are uniformly distributed at equal intervals along the circumferential direction; and/or the presence of a gas in the atmosphere,
the four edge bands are evenly distributed at equal intervals along the circumferential direction.
Optionally, the rake angle of the cutting edge is 3 ° ± 1 °; and/or the presence of a gas in the atmosphere,
the relief angle of the cutting edge is 11 ° ± 1 °.
Optionally, the cutting edge has a circumferential width of 0.15mm ± 0.05 mm.
Optionally, the helical flutes have a helix angle of 30 ° ± 2 °.
Optionally, defining the extension length of the margin as L1 and the extension length of the helical flute as L2, L1 and L2 satisfy the following relationship: l1 is not less than L2 (L1+0.5 mm).
Optionally, the tool bit and the tool shank are integrally formed.
Optionally, the tool shank is a cylindrical rod.
The utility model provides a milling cutter for processing graphite work piece, set up four cutting edges that set up along the circumference interval through the tip at the tool bit, and set up the cutting face of cutting edge into smooth cambered surface, set up the cutting face radius range value of cutting edge to 0.85mm 0.05mm, set up a tip chip groove respectively simultaneously between each two adjacent cutting edges, the one end with four tip chip grooves is submitted in the center pin of tool bit, the other end communicates with four spiral chip grooves respectively, thereby effectively optimize the structure of cutter, the machining efficiency and the machining precision of graphite work piece have been improved, the rate of wear of cutter has been slowed down. Furthermore, the utility model discloses design the external diameter of tool bit as big as the external diameter of handle of a knife, all be 4mm 0.1mm, design the tool bit external diameter to be less than the handle of a knife external diameter for traditional art, the external diameter of tool bit has been increaseed in other words, like this, when the machined surface of graphite work piece is the plane, can be so that the cutter is better to planar cutting performance to make the surface finish of graphite work piece better.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a first schematic perspective view of a milling cutter for machining a graphite workpiece according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a milling cutter for machining a graphite workpiece according to an embodiment of the present invention;
fig. 3 is a schematic end view of an end portion of a cutter head provided in an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of an end portion of a cutter head provided by an embodiment of the present invention;
fig. 5 is a schematic side plan view of a milling cutter for machining a graphite workpiece according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1-5, the milling cutter 100 for processing graphite workpiece provided by the embodiment of the present invention includes a tool holder 110 and a tool bit 120 disposed at one end of the tool holder 110, wherein an outer diameter D1 of the tool holder 110 is 4mm ± 0.1mm, and an outer diameter D2 of the tool bit 120 is 4mm ± 0.1 mm; the cutter head 120 comprises a mandrel 125, four cutting edges 121, four lands 122, four end chip flutes 123 and four spiral chip flutes 124, the four cutting edges 121 are circumferentially distributed at intervals at the end of the cutter head 120, which is back to the cutter handle 110, the four lands 122 are spirally extended at the side of the cutter head 120 from the outer edges of the four cutting edges 121, which are far away from the central axis of the cutter head 120, respectively, the four spiral chip flutes 124 are respectively arranged between the two adjacent lands 122, the four lands 122 and the four spiral chip flutes 124 are circumferentially and alternately distributed at the periphery of the mandrel 125, one end of the mandrel 125 extends to the end of each cutting edge 121, which is close to the lands 122, and the other end of the mandrel 125 extends to the inner side. The four end chip grooves 123 are respectively arranged between every two adjacent cutting edges 121, one ends of the four end chip grooves 123 are converged on the central axis of the cutter head 120, the other ends of the four end chip grooves 123 are respectively communicated with the four spiral chip grooves 124, the cutting edges 121 are provided with cutting surfaces 1211 back to the cutter handle 110, the cutting surfaces 1211 are smooth cambered surfaces, and the radius R range value of the cutting surfaces 1211 is 0.85mm +/-0.05 mm. Shank 110 may be used to assemble with a fixture on a machine tool (not shown) to enable mounting of milling cutter 100 on the machine tool; the cutting edges 121 on the cutter head 120 are used for milling graphite workpieces, the end chip grooves 123 and the spiral chip grooves 124 on the cutter head 120 are used for discharging chips generated in the milling process, the cutting edges 121 and the end chip grooves 123 are circumferentially and alternately distributed, the cutting edges 122 and the spiral chip grooves 124 are circumferentially and alternately distributed, and the end chip grooves 123 are respectively communicated with the spiral chip grooves 124, so that the chips generated at the end part of the milling cutter 100 can be quickly discharged into the spiral chip grooves 124 from the end chip grooves 123 in the processing process, and the processing quality and the processing efficiency are favorably ensured. The embodiment of the utility model provides a milling cutter 100 for processing graphite work piece, set up four cutting edges 121 that set up along the circumference interval through the tip at tool bit 120, and set up the cutting face 1211 of cutting edge 121 into smooth cambered surface, set up the radius R scope value of cutting face 1211 of cutting edge 121 into 0.85mm 0.05mm, set up a tip chip groove 123 respectively between each two adjacent cutting edges 121 simultaneously, the one end with four tip chip grooves 123 is assembled in the terminal surface center of tool bit 120, the other end communicates with four spiral chip grooves 124 respectively, thereby effectively optimize the structure of cutter, the machining efficiency and the machining precision of graphite work piece have been improved, the rate of wear of cutter has been slowed down. Furthermore, the embodiment of the utility model provides an external diameter with the tool bit designs to be equally big with the external diameter of handle of a knife, all be 4mm 0.1mm, design to be less than the handle of a knife external diameter with the tool bit external diameter among the traditional art, the external diameter of tool bit has been increaseed in other words, like this, when the machined surface of graphite work piece is the plane (for example to the graphite jig who is used for making the cell-phone apron, when the centre of cell-phone apron is the plane, it is the plane to correspond graphite jig die cavity intermediate surface), can make the cutter better to planar cutting performance, thereby make the surface finish of graphite work piece better.
Preferably, the outer diameter D3 of the mandrel 125 is 2.3mm + -0.1 mm.
Preferably, the cutting surface 1211 is a spherical arc surface, and the surface precision of the machined graphite workpiece is high.
Preferably, the four cutting edges 121 are evenly spaced in the circumferential direction; and/or the four lands 122 are evenly and equally spaced along the circumferential direction. As a preferred embodiment of the present embodiment, the four cutting edges 121 are uniformly and equally spaced along the circumferential direction; and four margins 122 are evenly distributed at equal intervals along the circumferential direction, and the distribution mode is favorable for improving the cutting quality and the cutting efficiency of the cutter.
Preferably, the rake angle a1 of the cutting edge 121 is 3 ° ± 1 °. The rake angle of the cutting edge 121 is in particular the angle between the rake face of the cutting edge 121, which is the surface on the tool from which chips flow, and the base surface, which is the plane passing through a selected point of the cutting edge 121 and perpendicular to the main direction of movement. Here, setting the rake angle a1 of the cutting edge 121 in the range of 3 ° ± 1 ° improves the cutting performance of the tool, which in particular improves the sharpness of the cutting edge 121, thereby reducing cutting force, cutting heat, cutting power, and improving machining accuracy and machining surface quality, as well as improving the durability of the tool.
Preferably, the cutting edge 121 has a relief angle A2 in the range of 11 ° ± 1 °. The relief angle of the cutting edge 121 is specifically an included angle between a flank face of the cutting edge 121 and a cutting plane, the flank face of the cutting edge 121 is a face of the cutter opposite to the transition surface of the graphite workpiece, and the cutting plane is a plane passing through a selected point of the cutting edge 121, tangent to the cutting edge 121, and perpendicular to the base plane. Here, setting the range of the relief angle a2 of the cutting edge 121 to 11 ° ± 1 ° is advantageous for reducing the friction between the cutting edge 121 and the workpiece machining surface, and for improving the durability of the tool.
Preferably, the circumferential width t of the cutting edge 121 is 0.15mm ± 0.05 mm. The circumferential width t of the cutting edge 121 particularly refers to a dimension of the cutting edge 121 in which a cross section thereof extends in the circumferential direction, i.e., the thickness of the cutting edge 121. Here, setting the circumferential width t of the cutting edge 121 between 0.15mm ± 0.05mm can be favorable to ensuring the rigidity of the cutting edge 121, and is favorable to preventing the cutting edge 121 from being easily broken, and is also favorable to ensuring the machining accuracy of the tool.
Preferably, the helical flutes 124 have a helix angle of 30 ° ± 2 °. By adopting the range value of the spiral angle, the smoothness of chip removal in the machining process can be ensured.
Preferably, the helical direction of the helical flutes 124 is right-handed.
Preferably, the extension length of the margin 122 is defined as L1 (not shown), and the extension length of the helical flutes 124 is defined as L2 (not shown), then L1 and L2 satisfy the following relationship: l1 is not less than L2 (L1+0.5 mm). The extent L1 of the land 122 is specifically the extent of the land 122 in the axial direction of the tool bit 120, and the extent L2 of the helical flutes 124 is specifically the extent of the helical flutes 124 in the axial direction of the tool bit 120. Here, by optimally designing the relationship between the extension length of the land 122L 1 and the extension length of the spiral flute 124L 2, the machining and manufacturing of the land 122 are facilitated, and the smoothness of discharging scraps of the tool in the process of machining a graphite workpiece can be facilitated.
Preferably, the cutting head 120 and the tool holder 110 are integrally formed, so that a subsequent assembly process of the cutting head 120 and the tool holder 110 can be omitted, and the reliability of connection between the cutting head 120 and the tool holder 110 can be ensured.
Preferably, the tool tip 120 and the tool shank 110 are made of a superhard alloy, which is beneficial for ensuring the service life of the tool.
Preferably, the tool holder 110 is a cylindrical rod, which has a simple structure, is easy to machine and form, and is convenient for clamping on a machine tool.
The embodiment of the utility model provides a milling cutter 100 for processing graphite work piece, the preferred processing that is applicable to graphite jig, it can be so that graphite jig's machining precision is than higher. Of course, in specific applications, the milling cutter 100 for processing graphite workpieces provided by the embodiments of the present invention may also be applied to processing other workpieces made by using a graphite mold.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (9)
1. The milling cutter for machining the graphite workpiece comprises a cutter handle and a cutter head arranged at one end of the cutter handle, and is characterized in that the outer diameter of the cutter handle is 4mm +/-0.1 mm, and the outer diameter of the cutter head is 4mm +/-0.1 mm; the cutter head comprises a core shaft, four cutting edges, four lands, four end chip grooves and four spiral chip grooves, the four cutting edges are distributed at intervals along the circumferential direction at the end part of the cutter head back to the cutter handle, the four lands are respectively spirally extended at the side part of the cutter head from the outer edge of the cutter head which is far away from the center shaft of the cutter head, the four spiral chip grooves are respectively arranged between every two adjacent lands and are respectively distributed at the periphery of the core shaft along the circumferential direction, the four end chip grooves are respectively arranged between every two adjacent cutting edges, one ends of the four end chip grooves are crossed at the center shaft of the cutter head, the other ends of the four end chip grooves are respectively communicated with the four spiral chip grooves, the cutting edges are provided with cutting surfaces back to the cutter handle, and the cutting surfaces are smooth cambered surfaces, the radius range value of the cutting surface is 0.85mm +/-0.05 mm, and the outer diameter of the mandrel is 2.3mm +/-0.1 mm.
2. The milling cutter for machining graphite workpieces as set forth in claim 1, wherein said cutting face is a spherical arc face.
3. The milling cutter for machining graphite workpieces as set forth in claim 1, wherein four of said cutting edges are uniformly spaced circumferentially; and/or the presence of a gas in the atmosphere,
the four edge bands are evenly distributed at equal intervals along the circumferential direction.
4. The milling cutter for machining graphite workpieces according to claim 1, wherein the rake angle of the cutting edge is 3 ° ± 1 °; and/or the presence of a gas in the atmosphere,
the relief angle of the cutting edge is 11 ° ± 1 °.
5. The milling cutter for machining graphite workpieces according to any one of claims 1 to 4, wherein the cutting edge has a circumferential width of 0.15mm ± 0.05 mm.
6. The milling cutter for machining graphite workpieces according to any one of claims 1 to 4, wherein the helical flute has a helix angle of 30 ° ± 2 °.
7. The milling cutter for machining graphite workpieces as set forth in any one of claims 1 to 4, wherein an extension length of said margin is defined as L1, an extension length of said helical flute is defined as L2, and then L1 and L2 satisfy the following relationship: l1 is not less than L2 (L1+0.5 mm).
8. Milling cutter tool for machining graphite workpieces according to any one of claims 1 to 4, characterized in that the tool head and the tool shank are formed in one piece.
9. The milling cutter for machining graphite workpieces according to any one of claims 1 to 4, wherein the shank is a cylindrical rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920261890.XU CN210702768U (en) | 2019-03-01 | 2019-03-01 | Milling cutter for machining graphite workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920261890.XU CN210702768U (en) | 2019-03-01 | 2019-03-01 | Milling cutter for machining graphite workpiece |
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| Publication Number | Publication Date |
|---|---|
| CN210702768U true CN210702768U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920261890.XU Active CN210702768U (en) | 2019-03-01 | 2019-03-01 | Milling cutter for machining graphite workpiece |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113967758A (en) * | 2020-07-22 | 2022-01-25 | 上海飞机制造有限公司 | Spiral milling cutter |
| CN115647407A (en) * | 2022-09-07 | 2023-01-31 | 江苏伊斯达尔精密科技有限公司 | Square 35-degree outer chamfering tool |
-
2019
- 2019-03-01 CN CN201920261890.XU patent/CN210702768U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113967758A (en) * | 2020-07-22 | 2022-01-25 | 上海飞机制造有限公司 | Spiral milling cutter |
| CN115647407A (en) * | 2022-09-07 | 2023-01-31 | 江苏伊斯达尔精密科技有限公司 | Square 35-degree outer chamfering tool |
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