CN111673157B - Aluminum nitride ceramic unburned bricks structure processing milling cutter - Google Patents
Aluminum nitride ceramic unburned bricks structure processing milling cutter Download PDFInfo
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- CN111673157B CN111673157B CN202010547361.3A CN202010547361A CN111673157B CN 111673157 B CN111673157 B CN 111673157B CN 202010547361 A CN202010547361 A CN 202010547361A CN 111673157 B CN111673157 B CN 111673157B
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/40—Flutes, i.e. chip conveying grooves
Abstract
The invention provides an aluminum nitride ceramic green body structural part processing milling cutter, which comprises a cutter handle and a cutter body formed at one end of the cutter handle, wherein the cutter body of the structural part processing milling cutter comprises: the powder discharging cutter comprises at least two first cutting edges and at least two second cutting edges, wherein each first cutting edge and each second cutting edge are a left-handed arc-shaped cutting edge formed by spirally extending with the cutter handle rotating shaft as an axis, the first cutting edges and the second cutting edges are arranged at intervals, and a powder discharging groove which is concave towards the cutter handle rotating shaft is formed between the adjacent first cutting edges and the adjacent second cutting edges; and the distance between the blade sharp angles of the two symmetrically arranged first cutting blades is greater than the distance between the blade sharp angles of the two symmetrically arranged second cutting blades by taking the rotating shaft of the cutter handle as an axis. Thereby, guarantee the bulk strength of cutting edge, it is not fragile and lead to having the metal to remain in the material at the cutting in-process, guaranteed the quality after the product sintering then to reduce the raise dust of production site through setting up the dust chute.
Description
Technical Field
The invention belongs to the technical field of ceramic structural member processing, and particularly relates to a milling cutter for processing an aluminum nitride ceramic green structural member.
Background
In the prior art, a ceramic structural member, in particular to a milling cutter adopted in the processing of an aluminum nitride ceramic structural member, is made of high-speed tool steel and hard alloy, and in order to further improve the heat resistance, the wear resistance and the hardness of the milling cutter, the surface of a milling cutter substrate is subjected to plating treatment.
For example, in the existing equipment, the right-handed helical cutting edge milling cutter and the straight cutting edge milling cutter are commonly used in ceramic processing. In the energy-absorbing dry-cutting process, the right-handed helical tooth blade milling cutter rotates anticlockwise, the blade of the right-handed helical tooth blade milling cutter is contacted with the edge position of a green structural part from bottom to top, and the right-handed helical tooth blade milling cutter generates upward cutting force on the edge position of the structural part along with the rotation and milling movement of the milling cutter, so that the edge position of the structural part is easy to generate cutting breakout under the action of the cutting force, and due to the generation of the cutting breakout, the blade is indirectly subjected to larger loss, the sharpness of the blade is greatly influenced, and then a finished product is easy to generate cracks or delaminate due to overlarge stress. Even part of the metal body resulting from the edge damage remains in the ceramic material before sintering, thus contaminating the green compact formed after sintering.
On the other hand, in the machining process, the cutting edges of the spiral tooth blade and the straight blade milling cutter generate a large amount of raised dust when cutting with a green body due to the single structure of the tooth blade, and influence of different degrees is caused on the site environment and the construction safety.
In view of this, the prior art should be improved to solve the technical problems that in the ceramic structural member processing technology, the right-handed helical tooth blade and the straight blade milling cutter are fast to wear and short in service life, and the processing quality of the aluminum nitride ceramic structural member is difficult to guarantee.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides the milling cutter for processing the aluminum nitride ceramic green structural member, which has a simplified structure and is easy to realize, replaces a right-handed spiral tooth blade or a straight blade milling cutter prepared by adopting high-speed tool steel in the prior art, can obviously prolong the service life of the milling cutter, avoids the occurrence of mouth breakage, cracks or layering of a finished product caused by stress in the production process, and prevents metal fragments of the blade from remaining due to the damage of the blade.
In order to solve the technical problems, the invention provides an aluminum nitride ceramic green body structural part processing milling cutter, which comprises a cutter handle and a cutter body formed at one end of the cutter handle, wherein the cutter body of the structural part processing milling cutter comprises: the powder discharging cutter comprises at least two first cutting edges and at least two second cutting edges, wherein the cutting edge of each first cutting edge is perpendicular to a machining surface, the cutting edge of each second cutting edge is conical, each first cutting edge and each second cutting edge spirally extend to form a left-hand arc-shaped cutting edge by taking the cutter handle rotating shaft as an axis, the first cutting edges and the second cutting edges are arranged at intervals, and a powder discharging groove which is concave towards the cutter handle rotating shaft is formed between every two adjacent first cutting edges and every two adjacent second cutting edges; and the distance between the blade sharp angles of the two symmetrically arranged first cutting blades is greater than the distance between the blade sharp angles of the two symmetrically arranged second cutting blades by taking the rotating shaft of the cutter handle as an axis.
Preferably, the cutting tool further comprises at least two third cutting edges and at least two fourth cutting edges which are arranged at intervals, each third cutting edge and each fourth cutting edge are in an S shape, each third cutting edge and each fourth cutting edge extend from the edge end of the first cutting edge to the edge end of the adjacent second cutting edge to connect the end parts of the adjacent first cutting edge and the adjacent second cutting edge, and the third cutting edge and the fourth cutting edge are connected to form a flat cross-shaped tool bit end surface.
Further preferably, two arcs forming the S-shaped third cutting edge are defined as a first arc and a second arc, then, the ratio of the radius length of the circle where the first arc is located to the radius length of the circle where the second arc is located is 1: 3, two ends of the fourth cutting edge are respectively connected with the two symmetrically arranged third cutting edges, wherein one end of the fourth cutting edge is connected with an end point of the second arc on any one of the two symmetrically arranged third cutting edges, and the other end of the fourth cutting edge extends to the midpoint position of the first arc of the other third cutting edge.
Still further preferably, the tool holder is rotated along a tool holder rotation axis, the first cutting edge, the second cutting edge and the sharp edge of the cutting edge are in contact with a surface of the green structural member, and powder formed during cutting is discharged from the powder discharge groove, wherein during cutting, the milling cutter rotates clockwise and moves in the same direction and/or in the opposite direction as the milling cutter, and the first cutting edge and the second cutting edge are in contact with an edge position of the green structural member and cut the edge position of the structural member from top to bottom.
Still preferably, the bit end face is perpendicular to the shank rotation axis.
Still further preferably, when cutting, an included angle formed between the arc line on which the first cutting edge and the second cutting edge are located and the machining plane is defined as a spiral edge lead angle, and then, during the cutting, the spiral edge lead angle of the first cutting edge and the second cutting edge varies within a range of 35 degrees to 75 degrees.
It is also preferred that the length ratio of the distance between the point angles of the two symmetrically arranged first cutting edges to the distance between the point angles of the two symmetrically arranged second cutting edges is 5: 4.
Still more preferably, the vertical taper of the second cutting edge is 1 degree or more and 3 degrees or less.
Preferably, the cutter body is made of all-ceramic zirconia materials. Compared with the prior art, the invention has the following beneficial technical effects due to the adoption of the technical scheme:
1. the first cutting edge and the second cutting edge extend spirally along the axis of the rotating shaft of the tool holder to form a left-handed spiral arc-shaped cutting edge, four spirally extending powder discharging grooves are formed between at least two first cutting edges and at least two second cutting edges, the ends of the first cutting edge and the second cutting edge are connected by at least two S-shaped third cutting edges and at least two S-shaped fourth cutting edges, thereby forming a cross-shaped flat tool bit end face, when cutting, the milling cutter rotates clockwise by taking the rotating shaft of the tool holder as an axis, at the moment, the arc-shaped tangent plane of the first cutting edge and the second cutting edge and the sharp corner of the cutting edge contact with the processing surface of a green structural part and cut the processing surface, in the process, the milling cutter moves in the same direction and/or in the opposite direction to the milling direction, the first cutting edge and the second cutting edge are in contact with the edge position of the green structural component, and the edge position of the structural component is cut from top to bottom; therefore, the base body design can ensure the integral strength of the cutting edge, and meanwhile, an upward force is not applied to the structural part any more in the cutting process, so that the occurrence of opening breakage at the cutting edge is avoided, in addition, the cutting edge is not easy to damage, so that metal residues exist in the material, and the quality of the product after sintering is ensured;
2. the first cutting edge and the second cutting edge are arranged at intervals, a powder discharge groove which is concave towards the rotating shaft of the tool holder is formed between the first cutting edge and the second cutting edge, the first cutting edge and the second cutting edge are contacted with the processing surface of a green structural part during cutting, powder generated by the rotation of the milling cutter moves outwards under the action of rotation inertia and is discharged from the groove bottom through the powder discharge groove, and dust emission of a production site is reduced;
3. the high-speed tool steel in the prior art is replaced by the full-ceramic zirconia material, and the cutting edge is integrally formed, so that the pollution to the green structural member in the processing process is effectively reduced;
4. the first cutting edge and the second cutting edge which are symmetrically arranged can ensure the high-speed rotating cutting balance of the milling cutter, and in the invention, the cutting edge of the first cutting edge is arranged to be vertical to the processing plane of the structural member, thereby ensuring that the side cutting surface is flat and vertical; correspondingly, the cutting edge of the second cutting edge is set to be conical, namely, a certain angle is formed between the cutting edge and the processing surface of a processed workpiece, so that the auxiliary edge has a certain cone angle, a rotating downward acting force is generated in the high-speed cutting process, the cutting powder is effectively screwed into the powder discharge groove and is discharged from the bottom of the powder discharge groove, organic matter powder in the aluminum nitride powder after the first cutting edge is processed is prevented from being adhered to the cutting edge, the cutting capability of the aluminum nitride powder is reduced, and the self-cleaning cutting edge is realized.
Drawings
FIG. 1 is a schematic view showing the structure of a milling cutter for machining an aluminum nitride ceramic green structural member according to a preferred embodiment of the present invention;
fig. 2 is a side view showing a side structure of the milling cutter shown in fig. 1;
fig. 3 is a schematic view showing the configuration of the end face of the milling cutter head shown in fig. 1;
FIG. 4 is a state diagram showing a state of contact with a machined surface of a green structural member in a cutting state of the milling cutter shown in FIG. 1;
fig. 5 is a bottom view showing the top structure of fig. 4.
Detailed Description
An embodiment of a milling cutter for machining an aluminum nitride ceramic green structural member according to the present invention will be described with reference to the accompanying drawings. Those of ordinary skill in the art will recognize that the described embodiments can be modified in various different ways, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in the present description, the drawings are not to scale and like reference numerals refer to like parts.
It should be noted that, in the embodiments of the present invention, the expressions "first" and "second" are used to distinguish two entities with the same name but different names or different parameters, and it is understood that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and the descriptions thereof in the following embodiments are omitted.
The milling cutter for machining the aluminum nitride ceramic green structural member according to the preferred embodiment of the present invention is a milling cutter for machining an aluminum nitride ceramic green structural member, and may be used for machining other ceramic green structural members. In the embodiment of the invention, the milling cutter adopts the full ceramic zirconia material to replace the high-speed tool steel adopted in the prior art as the base material of the cutter body. The cutter body is substantially cylindrical and has a central axis, the cutter body rotates around the central axis of the cutter body as a rotation axis when cutting is performed by the milling cutter, the cutter body includes a front end and a rear end, the cutting portion is formed at the front end, and the holder is formed at the rear end
Fig. 1 is a schematic view showing a structure of a milling cutter for machining an aluminum nitride ceramic green structural member according to a preferred embodiment of the present invention. Fig. 2 is a side view showing a side structure of the milling cutter shown in fig. 1. Referring to fig. 1 and 2, the aluminum nitride ceramic green structural member according to the preferred embodiment of the present invention includes a tool shank 10 and a tool body 20 formed at one end of the tool shank 10. The tool holder 10 and the tool body 20 are coaxial, that is, the tool holder 10 and the tool body 20 both use the rotating shaft of the tool holder 10 as the axial lead, and as can be seen from the figure, the tool body 20 includes a plurality of left-handed helical grooves 21 which extend in a rotating manner and are recessed towards the rotating shaft of the tool holder 10.
The cutter body 20 includes two first cutting edges 22 and two second cutting edges 23, the first cutting edges 22 and the second cutting edges are left-handed arc-shaped cutting edges formed by spirally extending the axis of the rotary shaft of the cutter holder 10, and fig. 3 is a schematic view showing the structure of the end face of the milling cutter head shown in fig. 1. Referring to fig. 1 and 3, assuming that the rotation axis of the tool holder 10 is an axis, in this embodiment, the ends of the first cutting edge 22 and the second cutting edge 23 form an edge point 25, and the edge point 25 is shaped like an inwardly recessed arc, and the outer portion thereof is a land. The two first cutting edges 22 and the two second cutting edges 23 are symmetrically arranged, and the distance D1 between the point angles 25 of the two symmetrically arranged first cutting edges 22 should be greater than the distance D2 between the point angles 25 of the two symmetrically arranged second cutting edges 23, and in the preferred embodiment, the length ratio of the distances D1 to D2 is set to 5: 4.
With continued reference to fig. 1, the powder discharge groove 21 is a groove-shaped structure formed between two first cutting edges 22 and two second cutting edges 23 which are arranged at intervals, and with continued reference to fig. 1, the powder discharge groove further comprises two third cutting edges 26 and two fourth cutting edges 27, and similarly, the two third cutting edges 26 and the four cutting edges 27 are also arranged symmetrically, and the third cutting edges 26 and the fourth cutting edges 27 are also arranged at intervals. As shown, the third cutting edge 26 and the fourth cutting edge are both "S" shaped and extend from the edge end of a first cutting edge 22 to the edge end of a second cutting edge 23 adjacent to the first cutting edge, that is, both ends of the third cutting edge 26 and the fourth cutting edge 27 are respectively connected with the end portions of two adjacent first cutting edges 22 and second cutting edges 23, so that in the preferred embodiment, two third cutting edges 26 are connected with the end portions of two adjacent fourth cutting edges 27 to form a flat cross-shaped tool tip end surface 24, in the preferred embodiment of the invention, the tool tip end surface 24 is arranged perpendicular to the rotation axis of the tool holder 10, and in other embodiments, the tool tip end surface 24 can be arranged to form an angle with the rotation axis of the tool holder 10 according to the actual green machining requirements, but the embodiments of the invention are not limited thereto.
With continued reference to fig. 1 and 3, the "S" shaped third cutting edge 26 can be seen as formed by splicing two circular arcs, which are respectively the first circular arc 261 and the second circular arc 262, so that the ratio of the radius length of the circle on which the first circular arc 261 is located to the radius length of the circle on which the second circular arc 262 is located is 1: 3, and the length of the first circular arc 261 is smaller than the length of the second circular arc 262. And the two ends of the two symmetrically arranged fourth cutting edges 27 are respectively connected with the two third cutting edges, and as can be seen from the figure, one end of any one fourth cutting edge 27 is connected with the end point of the second circular arc 262 in any one third cutting edge 26, and the other end extends to the midpoint position of the first circular arc 261 of the other third cutting edge 26. Also, therefore, the distance D1 between the point angles 25 of the two symmetrically disposed first cutting edges 22 on the milling cutter body should be greater than the distance D2 between the point angles 25 of the two symmetrically disposed second cutting edges 23.
In the actual cutting, the first cutting edge 22, the second cutting edge 23 and the sharp edge 25 are in contact with the surface of the green structural member, and the powder formed during the cutting is discharged through the powder discharge groove 21.
Fig. 4 is a state diagram showing a state of contact with a machined surface of a green structural member in a cutting state of the milling cutter shown in fig. 1. Fig. 5 is a bottom view showing the top structure of fig. 4. Referring to fig. 3 and 4, as previously described, the cutting is performed with the first cutting edge 22, the second cutting edge 23, and the point angle 25 in contact with the surface of the green structural member 30. Referring to fig. 3, the included angle between the arc line of the first cutting edge 22 and the second cutting edge 23 and the processing plane 31 is defined as the helix angle β, and it should be noted that, in actual cutting, the helix angle of the first cutting edge 22 and the second cutting edge 23 varies with the cutting process, and in the preferred embodiment, the helix angle varies in the range of 35 degrees to 75 degrees. Meanwhile, the vertical taper α between the second cutting edge 23 and the vertical machining vertical surface 32 is 1 degree or more and 3 degrees or less. In the preferred embodiment of the invention, the helical cutting edge lead angle β is 50 degrees and the perpendicular taper α between the second cutting edge 23 and the perpendicular machining perpendicular 32 is 3 degrees.
In the preferred embodiment, the edge of the first cutting edge 2 is set perpendicular to the processing plane 31 of the green structural member 30 so that the side cutting surface is flat and flat, and the edge of the second cutting edge 23 is set to be tapered, that is, the edge of the second cutting edge 23 is at a certain angle with the processing plane of the green structural member 30, so that the edge of the second cutting edge 23 is rotated to generate a downward force during high-speed cutting, and thus, the powder generated during cutting is rotated into the powder discharge chute 21 and discharged from the bottom of the powder discharge chute 21 by the downward force.
Referring to fig. 3 and the drawings again, the cross section of the tool bit base body formed by the first cutting edge 22 and the second cutting edge 23 is circular, and referring back to fig. 3, the tool holder 10 is rotated clockwise along the rotation axis of the tool holder 10, and the milling cutter is simultaneously advanced to move in the same direction and/or in the opposite direction, so that the first cutting edge 22 and the second cutting edge 23 contact with the processing plane 31 and the processing vertical plane 32 of the green structural member 30 and cut the processing plane 31 and the processing vertical plane 32, respectively, during which process, the first cutting edge 22 and the second cutting edge 23 cut the processing vertical plane from top to bottom, thereby not applying an upward force to the cut to cause the chipping, and simultaneously, the blade cusp 25 also contacts with the processing plane of the green structural member 30 to perform the secondary cutting, and the powder and dust generated during the whole process enter the powder discharge groove 21 during the rotation process, and then further rotation of the tool holder 10 and the influence of the self-gravity, and the dust is discharged from the bottom of the dust discharge groove 21, so that the dust is prevented from forming on the processing site.
Compared with the prior art, the invention has the following beneficial technical effects due to the adoption of the technical scheme:
the first cutting edge and the second cutting edge extend spirally along the axis of the rotating shaft of the tool holder to form a left-handed spiral arc-shaped cutting edge, four spirally extending powder discharging grooves are formed between at least two first cutting edges and at least two second cutting edges, the ends of the first cutting edge and the second cutting edge are connected by at least two S-shaped third cutting edges and at least two S-shaped fourth cutting edges, thereby forming a cross-shaped flat tool bit end face, when cutting, the milling cutter rotates clockwise by taking the rotating shaft of the tool holder as an axis, at the moment, the arc-shaped tangent plane of the first cutting edge and the second cutting edge and the sharp corner of the cutting edge contact with the processing surface of a green structural part and cut the processing surface, in the process, the milling cutter moves in the same direction and/or in the opposite direction to the milling direction, the first cutting edge and the second cutting edge are in contact with the edge position of the green structural component, and the edge position of the structural component is cut from top to bottom; therefore, the base body design can ensure the integral strength of the cutting edge, and meanwhile, an upward force is not applied to the structural part any more in the cutting process, so that the occurrence of opening breakage at the cutting edge is avoided, in addition, the cutting edge is not easy to damage, so that metal residues exist in the material, and the quality of the product after sintering is ensured;
2. the first cutting edge and the second cutting edge are arranged at intervals, a powder discharge groove which is concave towards the rotating shaft of the tool holder is formed between the first cutting edge and the second cutting edge, the first cutting edge and the second cutting edge are contacted with the processing surface of a green structural part during cutting, powder generated by the rotation of the milling cutter moves outwards under the action of rotation inertia and is discharged from the groove bottom through the powder discharge groove, and dust emission of a production site is reduced;
3. the high-speed tool steel in the prior art is replaced by the full-ceramic zirconia material, and the cutting edge is integrally formed, so that the pollution to the green structural member in the machining process is effectively reduced.
4. The first cutting edge and the second cutting edge which are symmetrically arranged can ensure the high-speed rotating cutting balance of the milling cutter, and in the invention, the cutting edge of the first cutting edge is arranged to be vertical to the processing plane of the structural member, thereby ensuring that the side cutting surface is flat and vertical; correspondingly, the cutting edge of the second cutting edge is set to be conical, namely, a certain angle is formed between the cutting edge and the processing surface of a processed workpiece, so that the auxiliary edge has a certain cone angle, a rotating downward acting force is generated in the high-speed cutting process, the cutting powder is effectively screwed into the powder discharge groove and is discharged from the bottom of the powder discharge groove, organic matter powder in the aluminum nitride powder after the first cutting edge is processed is prevented from being adhered to the cutting edge, the cutting capability of the aluminum nitride powder is reduced, and the self-cleaning cutting edge is realized.
The present invention has been described in detail, and the embodiments are only used for understanding the method and the core idea of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and to implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides an aluminium nitride ceramic unburned bricks structure processing milling cutter, its includes handle of a knife and the cutter body that is formed at handle of a knife one end, its characterized in that, the cutter body of structure processing milling cutter includes: at least two first cutting edges and at least two second cutting edges, wherein the cutting edges of the first cutting edges are vertical to the processing surface, the cutting edges of the second cutting edges are conical,
each first cutting edge and each second cutting edge are left-handed arc-shaped cutting edges formed by spirally extending with the cutter handle rotating shaft as an axis, the first cutting edges and the second cutting edges are arranged at intervals, and a powder discharge groove sunken towards the cutter handle rotating shaft is formed between the adjacent first cutting edges and the adjacent second cutting edges; taking the rotating shaft of the tool holder as an axis, the distance between the blade sharp corners of the two symmetrically arranged first cutting blades is greater than the distance between the blade sharp corners of the two symmetrically arranged second cutting blades;
the cutting tool also comprises at least two third cutting edges and at least two fourth cutting edges which are arranged at intervals, wherein the third cutting edges and the fourth cutting edges are in an S shape and extend from the edge end of the first cutting edge to the edge end of the adjacent second cutting edge so as to connect the end parts of the adjacent first cutting edge and the adjacent second cutting edge, and the third cutting edges and the fourth cutting edges are connected to form a flat cross-shaped tool bit end surface;
defining two arcs forming the S-shaped third cutting edge as a first arc and a second arc, wherein the ratio of the radius length of the circle where the first arc is located to the radius length of the circle where the second arc is located is 1: 3, two ends of the fourth cutting edge are respectively connected with the two symmetrically arranged third cutting edges, wherein one end of the fourth cutting edge is connected with the end point of the second arc on any one of the two symmetrically arranged third cutting edges, and the other end of the fourth cutting edge extends to the middle point position of the first arc of the other third cutting edge;
along the rotatory handle of a knife of handle of a knife rotation axis, first cutting edge, second cutting edge and the surface contact of cutting edge closed angle and green body structure spare, the powder that forms in the cutting process is followed discharge in the powder discharge groove, wherein, during the cutting, milling cutter clockwise rotation and with mill to syntropy and/or reverse movement, first cutting edge and second cutting edge with the border position contact of green body structure spare and the border position of top-down ground cutting structure spare.
2. The aluminum nitride ceramic green structural member machining milling cutter of claim 1, wherein the insert end face is perpendicular to the shank rotation axis.
3. The milling cutter for machining an aluminum nitride ceramic green structural member according to claim 1, wherein when the cutting is performed by defining an included angle formed between an arc line on which the first cutting edge and the second cutting edge are located and the machining plane as a helix edge lead angle,
the helix lead angles of the first and second cutting edges vary in the range of 35 to 75 degrees during cutting.
4. The aluminum nitride ceramic green structural member machining milling cutter according to claim 1, wherein a length ratio of a distance between the blade points of the two symmetrically disposed first cutting edges to a distance between the blade points of the two symmetrically disposed second cutting edges is 5: 4.
5. The aluminum nitride ceramic green structural member machining milling cutter as claimed in claim 1, wherein the vertical taper of the second cutting edge is 1 degree or more and 3 degrees or less.
6. The milling cutter for machining a green structural member of aluminum nitride ceramic according to any one of claims 1 to 5, wherein the cutter body is made of a fully ceramic zirconia material.
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| CN202010547361.3A CN111673157B (en) | 2020-06-16 | 2020-06-16 | Aluminum nitride ceramic unburned bricks structure processing milling cutter |
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| CN110587005A (en) * | 2019-09-24 | 2019-12-20 | 哈尔滨理工大学 | Variable-curvature involute-edge type indexable end milling cutter with secondary chip guide grooves |
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| US3696484A (en) * | 1971-02-22 | 1972-10-10 | Pneumo Dynamics Corp | Ball mill cutter |
| KR101160725B1 (en) * | 2006-04-28 | 2012-06-28 | 유니온쓰루 가부시키가이샤 | Rotary cutting tool |
| US8562261B2 (en) * | 2008-03-31 | 2013-10-22 | Sumitomo Electric Hardmetal Corp. | End mill |
| CN102009216A (en) * | 2010-12-14 | 2011-04-13 | 株洲钻石切削刀具股份有限公司 | End milling cutter for processing nonferrous metal |
| CN103357939A (en) * | 2012-04-03 | 2013-10-23 | 鸿富锦精密工业（深圳）有限公司 | Milling cutter |
| CN206912325U (en) * | 2017-05-27 | 2018-01-23 | 东莞富兰地工具股份有限公司 | Asymmetric double blade milling cutter |
| CN207563808U (en) * | 2017-11-09 | 2018-07-03 | 上海冠钻精密工具有限公司 | For the round nose milling cutter of die casting processing |
| CN209614378U (en) * | 2018-10-31 | 2019-11-12 | 江苏科比特科技有限公司 | A kind of efficiently coarse-fine integrated milling cutter |
| CN210359468U (en) * | 2019-01-26 | 2020-04-21 | 江苏科比特科技有限公司 | End milling and side milling combined milling cutter |
| CN210702774U (en) * | 2019-08-30 | 2020-06-09 | 国宏工具系统（无锡）股份有限公司 | Efficient stainless steel milling cutter |
| CN111136312A (en) * | 2020-01-13 | 2020-05-12 | 苏州阿诺精密切削技术有限公司 | Zirconia ceramic flat-end mill |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110587005A (en) * | 2019-09-24 | 2019-12-20 | 哈尔滨理工大学 | Variable-curvature involute-edge type indexable end milling cutter with secondary chip guide grooves |
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