CN112658358A - A finish milling cutter for stellite alloy processing - Google Patents
A finish milling cutter for stellite alloy processing Download PDFInfo
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- CN112658358A CN112658358A CN202110016677.4A CN202110016677A CN112658358A CN 112658358 A CN112658358 A CN 112658358A CN 202110016677 A CN202110016677 A CN 202110016677A CN 112658358 A CN112658358 A CN 112658358A
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- 238000003801 milling Methods 0.000 title claims abstract description 35
- 229910001347 Stellite Inorganic materials 0.000 title claims abstract description 26
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910045601 alloy Inorganic materials 0.000 title abstract description 16
- 239000000956 alloy Substances 0.000 title abstract description 16
- 238000005520 cutting process Methods 0.000 claims abstract description 204
- 230000002093 peripheral effect Effects 0.000 claims abstract description 27
- 238000009826 distribution Methods 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims abstract description 5
- 238000003754 machining Methods 0.000 claims description 16
- 230000007774 longterm Effects 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 10
- 238000005299 abrasion Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000000227 grinding Methods 0.000 description 5
- 238000002161 passivation Methods 0.000 description 4
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- QBACCBHDCANWCQ-UHFFFAOYSA-N chromium cobalt molybdenum tungsten Chemical compound [Co][Cr][Mo][W] QBACCBHDCANWCQ-UHFFFAOYSA-N 0.000 description 1
- -1 comprise: co (60%) Chemical compound 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The invention provides a finish milling cutter for stellite alloy processing, which enables the cutter to have small cutting vibration and long-term stable operation of a cutting edge when stellite alloy is processed, improves the surface finish of a workpiece, improves the cutting efficiency and prolongs the service life. The cutting tool comprises a cylindrical tool handle and a cutting tool body, wherein the cylindrical tool handle is used for being clamped and connected with a machine tool, and the cutting tool body and the cylindrical tool handle are integrally formed; the cutting tool body is provided with a plurality of spiral chip grooves, and the chip grooves and the solid part of the tool body are intersected to form a plurality of cutting edges and blade backs; the cutting edge comprises a cutting end edge, a cutting peripheral edge and a tool nose chamfer used for connecting the cutting end edge and the cutting peripheral edge, and a blade back auxiliary groove is arranged on the blade back; the cutting edges are distributed in an unequal circumferential distribution relative to the center of the front end face of the cutting cutter body in the radial direction, included angles and angles between every two adjacent cutting edges are different, the angle difference is 5-10 degrees, and the groove shape of the end section of the chip groove is formed by splicing multiple sections of circular arcs in a tangent mode to form a continuous inner groove.
Description
Technical Field
The invention relates to the technical field of milling cutter structures, in particular to a finish milling cutter for stellite alloy processing.
Background
Stellite alloys, also known as cobalt-chromium-tungsten (molybdenum) alloys orCobalt-based alloyThe material is a difficult-to-process material with high hardness, high toughness and low heat dissipation. StaulideThe alloy has high red hardness (the hardness is up to HRC50), good thermal fatigue resistance, thermal corrosion resistance and abrasion resistance, and is widely applied to the fields of aerospace, automobile manufacturing, ship engineering, national defense and military industry and the like.
The chemical components of the stellite mainly comprise: co (60%), Cr (28% -32%), W (3.5% -5.5%), C (0.9% -1.4%) and a small amount of Fe, Mn, Ni, Si and other elements. Wherein, because the melting point of the W, Cr, Si and other element components in the alloy structure is high, the high-temperature strength of the material is good, so that the cutting temperature which the cutter needs to bear during cutting is high, and the cutter point is easy to generate plastic deformation abrasion; and because the affinity between elements such as W, Co, C and the like in the alloy structure and the structure elements of the cutter material is strong, the cutter is easy to generate serious cutter sticking phenomenon in the cutting process of the cutter, and the accumulated edge is formed, thereby influencing the surface quality of workpiece processing.
Meanwhile, in the cutting process, the temperature of a contact area between the cutter and chips is high (generally more than 800 ℃), and the temperature of an edge in contact with air is low, so that the transition area of the edge is easy to generate heat cracks and grooves under the action of cutting force, namely boundary abrasion is generated. In addition, due to the manufacturing process and material properties of stellite alloy, the defects of looseness, gaps, microcracks, inclusion and the like often occur in the alloy structure, and a large number of hard particles exist, so that the impact vibration is large when the cutter is used for cutting under the action of mechanical abrasion, and the blade is easy to break and crack.
Therefore, an end mill is needed to be designed to be suitable for finish machining of stellite, solve the problems of large cutting vibration of the cutter, easy tipping and abrasion of the cutting edge and the like, and improve the surface smoothness of the workpiece, the cutting efficiency and the service life of the cutter.
Disclosure of Invention
In view of the above problems, the present invention provides a finish milling cutter for stellite alloy machining, which enables the cutting vibration of the cutter to be small, the cutting edge to run stably for a long time, the surface finish of the workpiece to be improved, the cutting efficiency to be improved, and the service life to be prolonged when stellite alloy is machined.
A finish milling cutter for stellite processing, characterized by: the cutting tool comprises a cylindrical tool handle and a cutting tool body, wherein the cylindrical tool handle is used for being clamped and connected with a machine tool, and the cutting tool body and the cylindrical tool handle are integrally formed; the cutting tool body is provided with a plurality of spiral chip grooves, and the chip grooves and the solid part of the tool body are intersected to form a plurality of cutting edges and blade backs; the cutting edge comprises a cutting end edge, a cutting peripheral edge and a tool nose chamfer used for connecting the cutting end edge and the cutting peripheral edge, and a blade back auxiliary groove is arranged on the blade back; the cutting edges are distributed in an unequal circumferential distribution relative to the center of the front end face of the cutting cutter body in the radial direction, included angles and angles between every two adjacent cutting edges are different, the angle difference is 5-10 degrees, and the groove shape of the end section of the chip groove is formed by splicing multiple sections of circular arcs in a tangent mode to form a continuous inner groove.
It is further characterized in that:
diameter d of the cylindrical shank1Is greater than or equal to the diameter d of the cutting tool body2；
Diameter d of the cutting blade body 28 mm-14 mm, the length of the cutting edge of the cutting knife body is the diameter d21.5-3 times of the total weight of the composition;
core thickness d of the cutting blade bodyoIs a diameter d20.65-0.7 times of;
the number of the cutting edges of the cutting knife body is N, wherein N is a natural number more than equal to 3;
preferably, the value of N is 5;
a peripheral edge rake angle gamma of the cutting blade bodyoIs 6 degrees to 8 degrees;
the angle of the helical angle beta of the cutter is 38-45 degrees;
the end edge shape of the cutting knife body is a structure that one edge passes through the center;
the end edge reentrant angle of the cutting blade body is 1.5 degrees;
the rear cutter face of the cutting peripheral edge is in the form of a conical rear cutter face;
peripheral edge relief angle alpha of the cutting tool bodyo10 to 14 degrees;
first relief angle alpha of the cutting end edge1Is 8 to 12 degrees and a second relief angle alpha2Is 20 degrees to 22 degrees;
the chip grooves are formed in the cutting end edges of the opposite chip grooves and comprise groove bottom surfaces and tool nose platforms, the tool nose platforms are formed by the intersection of the tool nose surfaces and the cutting end edges, and the tool nose platforms are used for adjusting the size of the front angle of the cutting edges of the cutting end edges and the strength of the cutting edges so as to improve the cutting performance of the milling cutter;
the blade back is provided with a corresponding blade back auxiliary groove which is used for adjusting the width of the blade back and the space of the cutter groove for containing chips;
the coating of the cutting tool adopts titanium aluminum nitride;
and the cutter adopts passivation treatment before coating.
After the tool is adopted, the chip removal groove of the tool adopts a spiral groove structure, the groove shape is formed by tangency of a plurality of sections of circular arcs, the groove surface is connected and smoothly transited, the rigidity and the chip removal performance are considered, and the durability and the cutting efficiency of the tool are improved; the milling cutter cutting main edge adopts an unequal design, and each cutting edge generates different cutting frequencies during cutting, so that resonance between a cutter, a machine tool and a workpiece is effectively prevented, the cutter is prevented from bending and breaking due to cutting vibration, and the cutting machining precision and the surface quality are improved; when stellite alloy is processed, the cutting vibration of the cutter is small, the cutting edge stably runs for a long time, the surface finish of a workpiece is improved, the cutting efficiency is improved, and the service life is prolonged.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a cross-sectional view of a chip flute of the present invention;
fig. 3 is a perspective view of the peripheral edge of the cutting blade body of the present invention;
fig. 4 is a perspective view of an end edge of the cutting blade body of the present invention;
fig. 5 is a schematic top view of an end edge of the cutting blade body of the present invention;
fig. 6 is a partial sectional structural view of the peripheral edge of the cutting blade body of the present invention.
Detailed Description
A finish milling cutter for stellite machining, see fig. 1-6: the cutting tool comprises a cylindrical tool handle 1 and a cutting tool body 2, wherein the cylindrical tool handle 1 is used for being clamped and connected with a machine tool, and the cutting tool body 2 and the cylindrical tool handle 1 are integrally formed; the cutting tool body 2 is provided with a plurality of spiral chip grooves 3, and the chip grooves 3 are intersected with the solid part of the tool body to form a plurality of cutting edges 4 and an edge back 5; the cutting edge 4 comprises a cutting end edge 401, a cutting peripheral edge 402 and a tool nose chamfer 403 for connecting the cutting end edge 401 and the cutting peripheral edge 402, and the blade back 5 is provided with a blade back auxiliary groove; the cutting edges 4 are distributed in an unequal circumferential distribution in the radial direction relative to the center of the front end face of the cutting cutter body 2, included angles and angles between every two adjacent cutting edges 4 are different, the angle difference is 5-10 degrees, and the end section groove type of the chip groove 3 is formed by splicing multiple sections of circular arcs in a tangent mode to form a continuous inner groove.
Diameter d of the cylindrical shank 11Is greater than or equal to the diameter d of the cutting insert body 22；
Diameter d of the cutting insert 228 mm-14 mm, the length of the cutting edge l of the cutting blade body 2 is the diameter d21.5-3 times of the total weight of the composition;
core thickness d of the cutting insert body 2oIs a diameter d20.65-0.7 times of;
the number of the cutting edges 4 of the cutting cutter body 2 is N, wherein N is a natural number more than equal to 3;
cutting peripheral edge 402 rake angle γ of cutting insert body 2oIs 6 degrees to 8 degrees;
the angle of the helical angle beta of the cutter is 38-45 degrees;
the cutting edge shape of the cutting end of the cutting cutter body 2 is a structure that one edge passes through the center;
the end edge reentrant angle of the cutting blade body 2 is 1.5 degrees;
the flank face of the cutting peripheral edge 402 is in the form of a conical flank face;
cutting peripheral edge 402 relief angle alpha of cutting tool body 2o10 to 14 degrees;
first relief angle alpha of cutting end edge 4011Is 8 to 12 degrees and a second relief angle alpha2Is 20 degrees to 22 degrees;
the coating of the cutting tool adopts titanium aluminum nitride; and the cutter adopts passivation treatment before coating.
In specific implementation, see fig. 1-6: diameter d of the cylindrical shank 11Is greater than or equal toDiameter d of the cutting blade body 22Minimum even value of (d), diameter d of the cutting insert body 228 mm-14 mm; the rigidity of a milling cutter is inversely proportional to the edge length (overhang length), and the shorter the edge length of the cutter, the more rigid the cutter body, and the better the cutting performance, so the edge length l of the cutting cutter body is generally defined as the diameter d21.5-3 times of the total weight of the powder.
The number of cutting edges is one of the important factors affecting the cutting performance of the milling cutter. Generally, the smaller the number of blades is, the larger the chip containing space is, the smoother the chip removal by cutting is, but the area of the cross section of the end of the cutter is relatively smaller, the rigidity of the cutter is low, and the cutter body is easy to bend during cutting; on the contrary, the number of cutting edges increases, the cross-sectional area of the end of the cutter increases, the rigidity of the cutter body increases, but the space of the chip pocket becomes smaller, the chip holding capacity decreases, and the chip is easily clogged. In the specific embodiment, as shown in fig. 2, 5 spiral flutes 3 are arranged on the cutting tool body, the spiral flutes of the cutting tool adopt a forming groove structure, and the groove shape of the spiral flutes is formed by tangentially splicing multiple sections of the groove shape to form a continuous inner groove (as shown in fig. 6, wherein R is1≠R2≠R3≠R4) The bottom surface of the groove is in smooth transition, and simultaneously, the rigidity and the chip removal performance are considered, so that the durability and the cutting efficiency of the cutter are improved; core thickness d of cutting tool bodyoIs a diameter d20.65 to 0.7 times of the amount of the active ingredient.
In a specific embodiment, the chip discharge groove 3 and the solid part of the cutter body intersect to form 5 cutting edges 4 and a back 5, the cutting edges 4 comprise a cutting end edge 401, a cutting peripheral edge 402 and a cutter point chamfer 403 for connecting the cutting end edge 401 and the cutting peripheral edge 402, and the cutter point chamfer 403 can effectively improve the strength of the cutter point and eliminate or avoid the occurrence of cutter point tipping or plastic deformation abrasion; the chip groove 3 is provided with a chip groove 6 at the cutting end edge 401, the chip groove 6 comprises a groove bottom surface 601 and a chip surface 602, and the chip surface 602 intersects with the cutting end edge 401 to form a chip platform 603 for adjusting the size of the front angle of the cutting edge of the cutting end edge 401 and the strength of the cutting edge to improve the cutting performance of the milling cutter. The blade back 5 is provided with a blade back auxiliary groove 501 ground by a flat-bottom grinding wheel, and the purpose of the blade back auxiliary groove is to adjust the width of the blade back and the chip containing space of a cutter groove.
In the specific embodiment, the 5 cutting edges 4 are distributed in an unequal circumferential distribution in the radial direction relative to the center of the front end surface of the cutting tool body, namely, two adjacent cutting edgesThe included angles between the cutting edges are different, and the angle difference is 5-10 degrees; each cutting edge 4 is arranged in order of the division angle theta of the first cutting edge 41Is 72 DEG, and the division angle theta of the second cutting edge 42Is 77 DEG, the division angle theta of the third cutting edge 43Is 67 DEG, and the division angle theta of the fourth cutting edge 44Is 77 DEG, the division angle theta of the fifth cutting edge 45Is 67 deg.. The cutting edges of the multi-edge milling cutter adopt an unequal design, and each cutting edge generates different cutting frequencies during cutting, so that resonance between a cutter, a machine tool and a workpiece is effectively prevented, the cutter is prevented from bending and breaking due to cutting vibration, and the cutting machining precision and the surface quality are improved.
The rake face 7 has a rake angle γ in contact with the workpiece to be machinedoAnterior angle gammaoThe size of (a) influences the shape of the chip and the strength of the cutting edge of the tool, the rake angle gammaoThe larger the cutting edge, the sharper the cutting edge is, but the strength of the cutting edge is slightly reduced; while using a smaller rake angle gammaoThe contact length between the chips and the rake face 7 can be increased, the stress at the edge and the cutting temperature can be reduced, the durability of the cutting tool can be improved, and the peripheral edge rake angle gamma of the cutting tool body 2 can be increasedoIs 6 degrees to 8 degrees; meanwhile, in order to improve the stability during milling and increase the actual working rake angle, the helix angle of the cutter can be properly increased, and the angle beta of the helix angle of the cutter is set to be 38-45 degrees.
In order to prevent the machined surface of the workpiece material from elastic-plastic deformation, the flank of the cutting peripheral edge is in the form of a tapered flank 8 to increase the clearance between the peripheral edge flank of the tool and the workpiece, and the peripheral edge relief angle α of the cutting tool body 2o10 to 14 degrees; meanwhile, in order to simplify the cutter grinding process, ensure that the surface of a milled workpiece has no protrusion and prevent the end face of the milling cutter from colliding with the bottom surface of the workpiece, the end edge shape of the cutting cutter body 2 is one edge over center, and the end edge concave angle delta of the cutting edge part 2 is set to be 1.5 degrees; first relief angle alpha of the end edge of the cutting blade body 21Is 8 to 12 degrees and a second relief angle alpha2Is 20-22 degrees.
In the grinding process of the milling cutter, in order to improve the surface smoothness of the cutter and reduce the frictional resistance of the cutter during cutting and chip removal, fine grinding wheels are adopted to carry out fine polishing treatment on the front cutter face and the rear cutter face of the cutting peripheral edge and the first rear cutter face of the cutting end edge. However, after the tool is finely ground and polished by the fine grinding wheel, microscopic gaps (i.e. tiny tipping and saw cuts) with different degrees still exist on the cutting edge. Therefore, before the cutter coating, the cutting edge needs to be subjected to round angle passivation through quartz sand blasting treatment, so that the cutting edge is enabled to become smooth and flat, and the defect of edge breakage is reduced. Meanwhile, the groove of the cutter is uniformly polished, the surface quality of the groove is improved, and the adhesive force of the cutter coating is enhanced, so that the smoothness of the surface of a workpiece machined by the cutter is improved.
After the cutter is ground and prepared, a titanium aluminum nitride (AlTiN) coating is selected, and the surface of the cutter is subjected to coating treatment in a Physical Vapor Deposition (PVD) mode. The AlTiN coating has good chemical stability, high hot hardness, strong adhesive force, small friction coefficient and high wear resistance; meanwhile, because the Al concentration in the film layer is higher, a layer of extremely thin amorphous Al can be generated on the surface of the cutter during cutting processing2O3And a hard inert protective film is formed to play a role of a thermal barrier, so that the high-temperature oxidation resistance of the surface of the cutter is effectively improved.
The beneficial effects are as follows: the chip removal groove of the cutter adopts a spiral groove structure, the groove shape of the chip removal groove is formed by tangency of a plurality of sections of circular arcs, the groove surface is connected and smoothly transited, meanwhile, the rigidity and the chip removal performance are considered, and the durability and the cutting efficiency of the cutter are improved; the milling cutter cutting main edge adopts an unequal design, and each cutting edge generates different cutting frequencies during cutting, so that resonance between a cutter, a machine tool and a workpiece is effectively prevented, the cutter is prevented from bending and breaking due to cutting vibration, and the cutting machining precision and the surface quality are improved; when stellite alloy is processed, the cutting vibration of the cutter is small, the cutting edge stably runs for a long time, the surface finish of a workpiece is improved, the cutting efficiency is improved, and the service life is prolonged; the design of the rear cutter face of the cone increases the clearance between the rear cutter face of the peripheral edge of the cutter and the workpiece, and avoids the abrasion of the cutter caused by the elastic-plastic deformation of the material; the cutter passivation treatment effectively eliminates the microscopic defects of the cutting edge and improves the strength of the cutting edge while ensuring the sharpness of the cutting edge of the cutter; the surface coating of the cutter enables the cutter to obtain excellent comprehensive mechanical properties, thereby effectively prolonging the service life of the cutter and improving the cutting efficiency.
Most of parts prepared from stellite are cast forging parts or powder metallurgy parts, and conventional milling cutters are easy to collapse and wear, so that the service life of the cutters is seriously insufficient. Through the specific case of this patent milling cutter and ordinary milling cutter of contrast, through experimental verification, as shown in table 1, the cutter life-span of five-blade unequal end milling cutter is 4 times of ordinary four-blade end milling cutter, has fully explained rationality and reliability that this patent finish milling cutter designed, can effectively improve department tai li alloy finish milling machining efficiency to extension cutter life.
TABLE 1
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A finish milling cutter for stellite processing, characterized by: the cutting tool comprises a cylindrical tool handle and a cutting tool body, wherein the cylindrical tool handle is used for being clamped and connected with a machine tool, and the cutting tool body and the cylindrical tool handle are integrally formed; the cutting tool body is provided with a plurality of spiral chip grooves, and the chip grooves and the solid part of the tool body are intersected to form a plurality of cutting edges and blade backs; the cutting edge comprises a cutting end edge, a cutting peripheral edge and a tool nose chamfer used for connecting the cutting end edge and the cutting peripheral edge, and a blade back auxiliary groove is arranged on the blade back; the cutting edges are distributed in an unequal circumferential distribution relative to the center of the front end face of the cutting cutter body in the radial direction, included angles and angles between every two adjacent cutting edges are different, the angle difference is 5-10 degrees, and the groove shape of the end section of the chip groove is formed by splicing multiple sections of circular arcs in a tangent mode to form a continuous inner groove.
2. A finish milling cutter for stellite machining according to claim 1, wherein: the number of the cutting edges of the cutting knife body is N, wherein N is a natural number larger than equal to 3.
3. A finish milling cutter for stellite machining according to claim 1, wherein: a peripheral edge rake angle gamma of the cutting blade bodyoIs 6 to 8 degrees.
4. A finish milling cutter for stellite machining according to claim 1, wherein: the angle beta of the helical angle of the cutter is 38-45 degrees.
5. A finish milling cutter for stellite machining according to claim 1, wherein: the end edge shape of the cutting knife body is a structure that one edge passes through the center.
6. A finish milling cutter for stellite machining according to claim 1, wherein: the end edge reentrant angle of the cutting blade body is 1.5 degrees; peripheral edge relief angle alpha of the cutting tool bodyoIs 10-14 degrees.
7. A finish milling cutter for stellite machining according to claim 1, wherein: the rear tool face of the cutting peripheral edge is in the form of a conical rear tool face.
8. A finish milling cutter for stellite machining according to claim 1, wherein: first relief angle alpha of the cutting end edge1Is 8 to 12 degrees and a second relief angle alpha2Is 20-22 degrees.
9. A finish milling cutter for stellite machining according to claim 1, wherein: the chip groove is to one cutting end sword department is equipped with the chip groove, the chip groove contains tank bottom surface, rake face, the rake face with the cutting end sword is crossing to form the knife tip platform, the knife tip platform is used for adjusting the size and the blade intensity of the blade anterior angle of cutting end sword.
10. A finish milling cutter for stellite machining according to claim 1, wherein: the blade back is provided with a corresponding blade back auxiliary groove which is used for adjusting the width of the blade back and the space of the cutter groove for containing chips.
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| CN115846742A (en) * | 2022-12-26 | 2023-03-28 | 大连理工大学 | Unequal-pitch arc edge end mill for machining high-temperature alloy honeycomb core |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115846742A (en) * | 2022-12-26 | 2023-03-28 | 大连理工大学 | Unequal-pitch arc edge end mill for machining high-temperature alloy honeycomb core |
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