CN111168133A - Integral zirconia ceramic forming milling cutter for graphite processing - Google Patents
Integral zirconia ceramic forming milling cutter for graphite processing Download PDFInfo
- Publication number
- CN111168133A CN111168133A CN202010107072.1A CN202010107072A CN111168133A CN 111168133 A CN111168133 A CN 111168133A CN 202010107072 A CN202010107072 A CN 202010107072A CN 111168133 A CN111168133 A CN 111168133A
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- cutter
- peripheral edge
- milling cutter
- angle
- zirconia ceramic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2226/00—Materials of tools or workpieces not comprising a metal
- B23C2226/18—Ceramic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2230/00—Details of chip evacuation
- B23C2230/04—Transport of chips
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The invention relates to an integral zirconia ceramic forming milling cutter for graphite processing, which comprises a cutter body and a cylindrical handle which are coaxially arranged and are respectively a cylinder, wherein a plurality of right spiral chip grooves are axially arranged on the periphery of the cutter body, the cutting direction is right cutting, an axial cutting edge adopts a gradually-changed spiral line structure, the chip grooves adopt variable core thickness, the bottom of each groove is of an arc structure, the chip grooves and the cutter body are intersected to form a peripheral edge back, the peripheral edge back is in transitional reducing connection with the cylindrical handle through a neck, the peripheral edge back and the chip grooves form end edges, and the front section of the peripheral edge back is inverted without taper. The integral zirconia ceramic forming milling cutter for graphite processing provided by the invention has the advantages of high toughness, high wear resistance, excellent heat insulation performance, good thermal expansion coefficient and the like. The zirconia ceramic milling cutter does not need to be coated with a diamond coating, the service life of the cutter is prolonged by 15-20% compared with that of a diamond-coated hard alloy cutter, the surface size of a processed workpiece is more uniform, and the finish degree is higher.
Description
Technical Field
The invention belongs to the technical field of cutter design and cutter application, and particularly relates to an integral zirconia ceramic forming milling cutter for graphite processing.
Background
The graphite material is a carbon material consisting of graphite carbon, has the characteristics of excellent high temperature resistance, electrical conductivity, thermal conductivity, chemical stability and the like, is often used for manufacturing parts such as graphite 3D hot bending glass molds, electrodes, heat insulation layers and the like, and is increasingly widely applied to the industries such as automobiles, household appliances, communication, electronics, nuclear energy and the like. However, graphite materials are also difficult to crack and break due to high hardness and high brittleness and the increasingly complex shapes of parts. The existing graphite part forming hole machining method has the defects of thin wall, small round angle, sharp change and the like, and is easy to cause the problems of unsmooth chip removal, serious cutter abrasion, large roughness of the surface of the inner wall of a hole and the like.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention aims to provide an integral zirconia ceramic forming milling cutter for graphite processing.
In order to achieve the purpose and achieve the technical effect, the invention adopts the technical scheme that:
the utility model provides a graphite processing is with whole zirconia ceramic shaping milling cutter, includes coaxial setting and is the cutter body and the cylinder handle of cylinder respectively, cutter body periphery axial is equipped with the chip groove of the right spiral of a plurality of, and the cutting direction is right side and cuts, and the axial blade adopts gradual change helical profile line structure, and the chip groove adopts the variable core thickness, and the tank bottom is the circular arc structure, and the chip groove intersects with the cutter body and forms the all edge back of a knife blade, and all edge back of a knife blade passes through neck transition reducing with the cylinder handle and is connected, and all edge back of a knife blade and chip groove formation end sword, all edge back of a knife blade anterior segment taper back taper not.
Furthermore, the number of the chip grooves is two, the radial rake angle is 16-20 degrees, the helical angle of the chip grooves is linearly reduced from the tool nose to the cylindrical handle along the central axis, and the variation range is 35 degrees → 30 degrees.
Further, the axial length of the single flute of the chip discharge groove is L1, the axial length of the single back of the peripheral edge back is L2, and the flute back ratio is L1: l2 is 1.5 to 2.0.
Furthermore, the thickness taper of the chip removal groove core is a positive taper, the taper angle is 0.4-0.8 degrees, the thickness of a front core of the chip removal groove is a1, the value range of a1 is 0.23-0.28D 1, the thickness of a rear core is a2, the value range of a2 is 0.30-0.35D 1, and D1 is the diameter of the cylinder of the cutter body.
Furthermore, the arc radius of the bottom of the chip groove is 0.3-0.6 mm.
Further, the cutter body middle part adopts the tapering transition structure of positive reducing ratio, and transition angle is 30 ~ 45, D2: d1 is 1.5-5.0, wherein D1 is the diameter of the cylinder of the cutter body, and D2 is the diameter of the cylinder of the cylindrical handle.
Further, the diameter of the front section of the peripherical blade back is D1, the taper angle of the front section is 0 degree, and the length of the front section is 3-5 mm; the diameter of the rear section of the peripheral edge back of the blade is D3, and the taper angle of the rear section is 0.3-0.5 degrees.
Further, a first rear cutter face of the peripheral edge back is of a small-angle false edge straight rear cutter face structure, the first rear angle is 0-5 degrees, and the width is 0.03-0.08 mm; the second rear cutter face of the peripheral edge back adopts a straight rear cutter face structure, the second rear angle is 6-10 degrees, and the width is 0.03-0.08 mm; the third rear cutter face of the peripheral edge back of the blade adopts an arc surface structure, and the rear angle is 18-25 degrees.
Furthermore, the number of the end blades is two, the axial fall length between the tip of the end blade and the two drill tips is 0.10-0.15 mm, the chip groove and the edge connecting cutting edge of the edge surrounding blade back form a blade tip platform structure, the axial length is 0.3-0.6 mm, and the end blade cutting edge is ensured to be straight.
Further, a handle chamfer is formed at the right end of the cylindrical handle.
Compared with the prior art, the invention has the beneficial effects that:
1. the cutter base material of the integral zirconia ceramic formed milling cutter for graphite processing adopts zirconia non-metallic ceramic, has the advantages of high toughness, high wear resistance, excellent heat insulation performance, good thermal expansion coefficient and the like, does not need to be coated with a diamond coating, prolongs the service life of the cutter by 15-20 percent compared with the traditional diamond coated hard alloy cutter, and has more uniform surface size and higher finish degree of a processed workpiece;
2. the integral zirconia ceramic forming milling cutter for graphite processing adopts a symmetrical three-point structure of an end surface parabolic curve cutting edge and a rear cutter surface structure of an inwards concave curved surface, prevents the cutter from vibrating by a one-point centering and two-point cutting mode, and ensures the milling stability of the cutter;
3. the spiral direction of the integral zirconia ceramic molding milling cutter for graphite processing is right spiral, the cutting direction is right cutting, and the axial cutting edge adopts a gradually-changed spiral line structure, so that the strength and the integral rigidity of the cutting edge of the cutter can be enhanced;
4. the peripheral edge back of the integral zirconia ceramic forming milling cutter for graphite processing adopts a front-section non-taper rear-section inverted cone structure, the first rear cutter face adopts a small-angle false cutting edge structure, and the third rear cutter face adopts a cambered surface structure, so that the wedge angle of the cutter is increased, and the risks of extrusion and cutter breakage of the peripheral edge on the inner wall of the hole are reduced;
5. the chip groove of the integral zirconia ceramic forming milling cutter for graphite processing adopts variable core thickness, the bottom of the cutter adopts a large arc structure, and the middle part of the cutter body adopts a transition structure with positive reducing ratio and taper, so that the discharge space of cutting chips is increased, and the rigidity of the cutter is greatly enhanced.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is an enlarged view of the front end of the cutter body of the present invention;
3 FIG. 3 3 3 is 3 a 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 3 1 3 in 3 accordance 3 with 3 the 3 present 3 invention 3; 3
FIG. 4 is a schematic illustration of the core thickness axial taper of the present invention;
3 FIG. 35 3 is 3 an 3 enlarged 3 view 3 of 3 a 3 portion 3 A 3- 3 A 3 of 3 FIG. 3 3 3 A 3 according 3 to 3 the 3 present 3 invention 3; 3
FIG. 6 is a schematic illustration of the taper of the peripheral edge land of the present invention;
FIG. 7 is a left side view of the present invention;
wherein, 1-the cutter body; 2-peripheral edge back; 3-chip removal groove; 4-central axis; 5-a cylindrical handle; 6-chamfering the handle part; 7-neck transition; 8-end edge; 9-ideal surface; 10-top; 11-chip flutes; 12-an end edge first relief face; 13-an end edge second relief surface; 14-a drill tip; 15-peripheral edge first relief face; 16-peripheral edge second relief face; 17-peripheral edge third flank face.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings so that the advantages and features of the invention can be more easily understood by those skilled in the art, and the scope of the invention will be clearly and clearly defined.
As shown in fig. 1 to 7, a milling cutter formed of zirconia ceramics for graphite processing is made of zirconia ceramics, and includes a cutter body 1 and a cylindrical shank 5, the cutter body 1 and the cylindrical shank 5 are coaxial cylinders with a central axis 4 as a center, a plurality of right spiral flutes 3 are axially arranged on the periphery of the cutter body 1, a peripheral edge land 2 is formed at the intersection of the flutes 3 and the cutter body 1, the peripheral edge land 2 and the flutes 11 form an end edge 8, the milling cutter is located at the left end, and the connection line of two drill tips 14 of the end edge 8 is based on an ideal plane 9, and the ideal plane 9 functions as: as a reference datum plane of the axial difference of two drill points 14 in the axial direction in the manufacturing process of the cutter, the peripheral edge blade back 2 is in variable diameter connection with the cylindrical handle 5 through the neck transition 7, the diameter of the cylinder of the cutter body 1 is D1, the diameter of the cylinder of the cylindrical handle 5 is D2 and is used for clamping and fixing the cutter, D1 is smaller than D2, the end face of the cylindrical handle 5 forms a handle chamfer 6, and the cutter is prevented from breaking and the collet chuck from scratching the inner wall during clamping. The middle part of the cutter body 1 adopts a taper transition structure with a positive reducing ratio, the transition angle is designed to be theta, the value range of theta is 30-45 degrees, the ratio of the reducing ratio (D2: D1) is 1.5-5.0, the strength of the neck of the cutter is enhanced, and the cutter is prevented from being broken.
as shown in fig. 2, the helical direction of the milling cutter for forming the integral zirconia ceramic for graphite processing is right helix, the cutting direction is right cutting, the number of the chip flutes 3 is 2, and the axial cutting edge adopts a gradually-changed helical profile structure, the helical angle of the chip flutes 3 is designed to be α, the helical angle is linearly reduced from the cutter point to the cylindrical handle 5 along the central axis 4, the variation range is 35 ° → 30 °, and the linear equation is as follows:
α is 35-k △ L, wherein k is a linear variation coefficient and is usually 0.2-0.5, △ L is the length from the drill tip 14 to a measuring point along the central axis 4, △ L is more than or equal to 0 and less than or equal to L, and L is the edge length.
Generally, with the central axis 4 as a reference, the axial length of a single flute of the flute 3 is designed to be L1, the axial length of a single back of the peripheral edge land 2 is designed to be L2, and the flute back ratio is L1: the design of L2 is 1.5-2.0. As shown in FIG. 5, the radial rake angle of the chip grooves 3 is designed to be gamma, generally 16-20 degrees, and the sharpness of the cutting edge can be improved by adopting a large rake angle.
As shown in fig. 3-4, the chip groove 3 adopts variable core thickness, the core thickness is a, the front core thickness is a1, the value range is 0.23-0.28D 1, the rear core thickness is a2, the value range is 0.30-0.35D 1, the forward taper is adopted, the taper angle is theta 1, the value range is 0.4-0.8 degrees, and the rigidity of the cutter core is enhanced. The groove bottom of the chip removal groove 3 is of a large arc structure, the arc radius is designed to be R1, the value range is 0.3-0.6 mm, the chip removal and chip containing space of the chip removal groove 3 is enlarged, and the chip can be rapidly and smoothly discharged.
As shown in the figure 5-6, the peripheral edge back 2 adopts a front section non-taper rear section inverted taper structure, the diameter of the peripheral edge back 2 of ② is D, the whole edge length range of the peripheral edge back 2 comprises two taper structures, namely, the diameter of the front section of ② is D1, the taper angle of the front section of ② is 0 degrees, the length of the front section of ② is L5 and the range of the taper angle of ② is 3-5 mm, the diameter of the rear section of ② is D3, the taper angle of the rear section of ② is theta 2 and the range of the taper angle of ② is 0.3-0.5 degrees, the length of the rear section of ② is L6 and the range of the taper angle of ② is the difference between the edge length and L5, the peripheral edge back 2 of ② is composed of three parts, namely a peripheral edge first rear cutter face 15, a peripheral edge second rear cutter face 16 and a peripheral edge third rear cutter face 17, wherein the peripheral edge first rear cutter face 15 adopts a pseudo edge straight rear cutter face structure, the first rear cutter face of ② is designed to be alpha 1 degrees, the range of the alpha 1 degrees, the width k of the peripheral edge of ② is 0-5 mm, the second rear cutter face adopts a straight cutter face structure, the taper angle of ② is designed to be alpha 1 degree, the width of the second rear cutter face of ② is 0.03-0.08 mm, the rear cutter face of ② is designed to be a small angle, the width of the rear cutter face of ② is reduced by a small angle of the radial angle, and the radial angle of the radial angle of ② is.
As shown in fig. 7, the monolithic zirconia ceramic formed milling cutter for graphite processing adopts a symmetrical three-point structure of an end face parabolic curve cutting edge and a concave curved surface rear cutter face structure, the number of the end blades 8 is 2, the end blades 8 are composed of a first end blade rear cutter face 12 and a second end blade rear cutter face 13, the first end blade rear cutter face 12 is of a concave curved surface narrow structure, and the second end blade rear cutter face 13 is of a concave curved surface wide structure. The center 10 on the end edge 8 is a single-pointed structure formed by the central axis 4 and the end edge 8, the drill tip 14 is a chip removal groove 3, two pointed structures which are symmetrical to the central axis 4 and formed between the first rear knife face 15 of the peripheral edge and the first rear knife face 12 of the end edge, wherein the axial fall length of the center 10 and the two drill tips 14 is designed to be L3, the value range is 0.10-0.15 mm, three-point positioning is realized by centering the center and contacting a workpiece with two knife tips in actual cutting to prevent the vibration of the cutter, and the milling stability of the cutter is ensured.
The parts of the invention not described in detail can be realized by adopting the prior art, and are not described in detail herein.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The utility model provides a graphite processing is with whole zirconia ceramic shaping milling cutter, includes coaxial setting and is cylindrical cutter body (1) and cylinder handle (5) respectively, its characterized in that, cutter body (1) periphery axial is equipped with a plurality of right spiral's chip groove (3), the cutting direction is right side and cuts, the axial blade adopts gradual change helical profile line structure, chip groove (3) adopt the variable core thickness, the core thickness tapering is the positive cone, the tank bottom is the circular arc structure, chip groove (3) intersect with cutter body (1) and form all edge back of the body (2), all edge back of the body (2) anterior segment does not have tapering back of the body, all edge back of the body (2) are connected through neck transition (7) reducing with cylinder handle (5), all edge back of the body (2) and chip groove (11) form end sword (8).
2. The solid zirconia ceramic milling cutter for graphite working according to claim 1, wherein the number of the flutes (3) is two, the radial rake angle is 16 to 20 °, and the helix angle of the flutes (3) decreases linearly along the central axis (4) from the tip to the cylindrical shank (5), ranging from 35 ° → 30 °.
3. The milling cutter according to claim 1, wherein the axial length of the single flute of the chip flute (3) is L1, the axial length of the single back of the peripheral edge land (2) is L2, and the flute back ratio is L1: l2 is 1.5 to 2.0.
4. The milling cutter for forming integral zirconia ceramics for graphite processing according to claim 1, wherein the core thickness taper angle of the chip groove (3) is 0.4-0.8 °, the front core thickness of the chip groove (3) is 0.23-0.28D 1, and the rear core thickness is 0.30-0.35D 1, wherein D1 is the diameter of the cylinder of the cutter body (1).
5. The milling cutter for forming integral zirconia ceramics for graphite processing according to claim 1, wherein the radius of the arc of the groove bottom of the chip groove (3) is 0.3-0.6 mm.
6. The integrated zirconia ceramic formed milling cutter for graphite processing as claimed in claim 1, wherein the middle part of the cutter body (1) adopts a taper transition structure with a positive reducing ratio, the transition angle is 30-45 degrees, and the reducing ratio D2 is as follows: d1 is 1.5-5.0, wherein D1 is the diameter of the cylinder of the cutter body (1), and D2 is the diameter of the cylinder of the cylindrical handle (5).
7. The solid zirconia ceramic forming milling cutter for graphite processing as claimed in claim 1, wherein the front section taper angle of the peripheral edge land (2) is 0 ° and the front section length is 3 to 5 mm; the taper angle of the rear section of the peripheral edge back (2) is 0.3-0.5 degrees.
8. The milling cutter for forming integral zirconia ceramics for graphite processing according to claim 1, wherein the first relief surface (15) of the peripheral edge back (2) has a low-angle pseudo-land straight relief surface structure, the first relief angle is 0 to 5 °, and the width is 0.03 to 0.08 mm; a second rear cutter face (16) of the peripheral edge back (2) adopts a straight rear cutter face structure, the second rear angle is 6-10 degrees, and the width is 0.03-0.08 mm; the third rear cutter face (17) of the peripheral edge back (2) adopts an arc surface structure, and the rear angle is 18-25 degrees.
9. The solid zirconia ceramic-formed milling cutter for graphite working according to claim 1, wherein a shank chamfer (6) is formed at a right end portion of the cylindrical shank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010107072.1A CN111168133A (en) | 2020-02-21 | 2020-02-21 | Integral zirconia ceramic forming milling cutter for graphite processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010107072.1A CN111168133A (en) | 2020-02-21 | 2020-02-21 | Integral zirconia ceramic forming milling cutter for graphite processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111168133A true CN111168133A (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010107072.1A Withdrawn CN111168133A (en) | 2020-02-21 | 2020-02-21 | Integral zirconia ceramic forming milling cutter for graphite processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111168133A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112427710A (en) * | 2020-10-27 | 2021-03-02 | 上海航天精密机械研究所 | Anti-flutter cutter for machining thin-wall frame ring part, machining method and medium |
| CN113458472A (en) * | 2021-07-15 | 2021-10-01 | 江门市中刀精密科技有限公司 | Multi-step multi-profile coating forming reaming milling cutter |
-
2020
- 2020-02-21 CN CN202010107072.1A patent/CN111168133A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112427710A (en) * | 2020-10-27 | 2021-03-02 | 上海航天精密机械研究所 | Anti-flutter cutter for machining thin-wall frame ring part, machining method and medium |
| CN112427710B (en) * | 2020-10-27 | 2022-08-12 | 上海航天精密机械研究所 | Anti-flutter cutter for machining thin-wall frame ring part, machining method and medium |
| CN113458472A (en) * | 2021-07-15 | 2021-10-01 | 江门市中刀精密科技有限公司 | Multi-step multi-profile coating forming reaming milling cutter |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200519 |
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| WW01 | Invention patent application withdrawn after publication |