CN115475989A - Large-modulus indexable forming finish milling disc-shaped cutter - Google Patents
Large-modulus indexable forming finish milling disc-shaped cutter Download PDFInfo
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- CN115475989A CN115475989A CN202210980636.1A CN202210980636A CN115475989A CN 115475989 A CN115475989 A CN 115475989A CN 202210980636 A CN202210980636 A CN 202210980636A CN 115475989 A CN115475989 A CN 115475989A
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- 238000003801 milling Methods 0.000 title claims abstract description 180
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 238000005299 abrasion Methods 0.000 claims abstract description 8
- 230000009466 transformation Effects 0.000 claims abstract description 7
- 238000009826 distribution Methods 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 abstract 1
- 238000003754 machining Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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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
- B23C5/08—Disc-type cutters
-
- 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
Abstract
The invention provides a large-modulus indexable forming finish milling disc-shaped cutter which is characterized by comprising a milling disc, a pressure reducing hole, a chip groove, a top edge milling blade, a full edge milling blade and a compression screw, wherein the pressure reducing hole is formed in the milling disc; the top edge milling cutter blade and the milling cutter blade are respectively installed in the two blade grooves through compression screws, and the full-edge milling cutter blades are uniformly distributed on two sides of the milling cutter disc in a staggered mode. The invention discloses a milling cutter which arranges blade grooves according to a negative rake angle of 17 degrees, wherein a top edge milling blade edge is a transition arc at the bottom of a large-modulus straight-tooth cylindrical gear subjected to coordinate transformation, a full-edge milling blade edge is a tooth profile of the large-modulus straight-tooth cylindrical gear subjected to coordinate transformation, two blades are separately arranged in different blade grooves, and 16 milling blades are respectively uniformly and alternately arranged on the two sides of a milling cutter disc, and the milling cutter has the advantages that: the blade groove is arranged according to the negative rake angle of 17 degrees, so that the stress, strain and deformation of the blade groove in the milling process are reduced, the milling stability and the cutter disc strength are improved, the milling force of the top edge part in the milling process is large, the milling force of a single milling blade is reduced through the staggered lap joint distribution of the two blades, the blade abrasion is reduced, and the milling precision and the milling efficiency are improved.
Description
Technical Field
The invention relates to a milling cutter, in particular to a formed gear milling cutter head, belongs to a high-efficiency finish machining milling cutter, and particularly relates to a large-modulus indexable formed finish milling cutter head type cutter.
Background
The large-modulus gear is an important transmission part in modern industry, is applied to ships, mines, metallurgy, aviation, electric power and the like, and is the basis of equipment manufacturing industry in China. Large module gears are typically machined using an indexable disc-type milling cutter. However, the milling tooth profile is not standard in the milling process, the tooth surface has vibration lines and the like, the cutter can also generate milling deformation, the milling precision of finish machining milling of the gear and the service life of the cutter are influenced, so that the gear milling cutter is designed, the milling precision and the service life of the cutter are improved, the structure of a disc milling cutter and the form of a milling blade are changed on the premise of ensuring the machining precision of the gear, the purpose of high-precision production of the gear is achieved, and the production requirements of enterprises are met.
Disclosure of Invention
The invention provides a double-blade large-modulus staggered tooth finish milling disc-shaped milling cutter which is arranged according to a negative rake angle of 17 degrees and aims at solving the problems that the finish milling precision of a large-modulus gear is not high, a cutter is easy to wear, the milling efficiency is not high and the like, and namely a large-modulus indexable forming finish milling disc-shaped cutter.
In order to achieve the purpose, the invention provides the following technical scheme:
a large-modulus indexable forming finish milling disc-shaped cutter comprises a milling cutter disc 1, a full-edge milling blade 2, a top-edge milling blade 3, a top-edge chip groove 4, a full-edge chip groove 5, a pressure reducing hole 6, a compression screw 7, a full-edge blade groove 8 and a top-edge blade groove 9 which correspond to each other; the full-edge milling blade 2 and the top-edge milling blade 3 are respectively assembled on the full-edge blade groove 8 and the top-edge blade groove 9 by the compression screws 7 and are overlapped to form a blade for finish milling tooth profile. The arrangement of the blades with the negative rake angle of 17 degrees reduces the stress, strain and deformation of the blade groove in the milling process, and improves the milling stability and the strength of the cutter head; in the milling process, the deformation and the milling force received by the top of the cutter head are the largest, the milling force of a single milling blade is reduced by the full-edge milling blade 2 and the top-edge milling blade 3 through the staggered lap distribution of the two blades, the blade abrasion is reduced, and the milling efficiency is improved.
16 groups of milling blades are equidistantly arranged on two sides of the milling cutter disc 1, wherein 8 full-edge milling blades 2 and 8 top-edge milling blades 3 are distributed on one side of the milling cutter disc 1; the full-edge milling blade 2 and the top-edge milling blade 3 are arranged in a clockwise arrangement mode, so that the cutting efficiency is improved.
The full-edge milling cutter blade 2 and the top-edge milling cutter blade 3 are arranged according to a negative rake angle of 17 degrees, and the edge shape of the blades is an edge-shaped curve obtained by coordinate transformation of a standard straight tooth external gear profile, wherein the edge shape of the full-edge milling cutter blade 2 is a full edge, and the edge shape of the top-edge milling cutter blade 3 is a partial arc of a cutting tooth bottom.
The full-edge blade grooves 8 and the top-edge blade grooves 9 are arranged according to the negative rake angle of 17 degrees through ANSYS software analysis, so that the stress, strain and deformation of the blade grooves in the milling process are reduced, and the milling stability and the cutter disc strength are improved; the fastening screw mounting surface of the full-edge blade groove 8 is parallel to the tangent plane of the cutter head inclined plane corresponding to the full-edge blade groove, and the included angle between the fastening screw mounting surface of the top-edge blade groove 9 and the tangent plane of the cutter head inclined plane corresponding to the top-edge blade groove is 10 degrees, so that the strength of the top-edge milling blade 3 can be improved.
The full-edge chip groove 5 and the top-edge chip groove 4 adopt a smooth fluid curved surface design, and the chip grooves are calculated according to the feed amount and the processed gear modulus by introducing a chip containing coefficient, so that the chip containing coefficients meet the chip containing requirements; the direction of the full-edge chip groove 5 is parallel to the full-edge blade groove 8; the direction of the top edge chip groove 4 is vertical to the paper surface, so that materials are saved, and the strength of the cutter head is improved; this design is convenient for the chip removal smoothly, reduces blade groove wearing and tearing.
The pressure relief holes 6 facilitate the removal of the full-edge milling insert 2.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the milling cutter blades are arranged according to the negative rake angle of 17 degrees, and the top edge milling cutter blades and the full edge milling cutter blades are uniformly overlapped in staggered tooth distribution according to a rule to finish mill the gear. The chip grooves are distributed according to the negative front angle of 17 degrees, and the smooth fluid curved surface design in different directions reduces the abrasion of the chip grooves, improves the strength of the cutter head and ensures that the chip removal is smoother.
Drawings
FIG. 1 is a schematic structural view of a finish milling disc-type gear milling cutter according to the present invention;
FIG. 2 is a right side view of FIG. 1;
FIG. 3 is a schematic view of the cutter head;
FIG. 4 is a schematic view of the overlapping of the blades of the present invention;
FIG. 5 is a partial perspective view of the present invention;
fig. 6 is a sectional view at the full-edge milling insert 2;
fig. 7 is a sectional view at the top edge milling insert 3;
in the figure: 1. a milling cutter disc; 2. a full-edge milling blade; 3. a top edge milling blade; 4. the top edge mills the chip groove of the blade; 5. milling the chip groove of the blade with full edge; 6. a pressure relief vent; 7. a compression screw; 8. milling a blade slot of the blade with full edge; 9. the top edge mills the insert pocket.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to clarify technical problems, technical solutions, implementation processes and performance displays. It should be understood that the specific embodiments described herein are for illustrative purposes only. The present invention is not limited to the above embodiments. Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the subject matter of the present disclosure.
Example 1
As shown in fig. 1 and 2, a large-modulus indexable forming finish milling disc-shaped cutter is characterized by comprising a milling disc 1, a full-edge milling insert 2, a top-edge milling insert 3, a top-edge chip groove 4, a full-edge chip groove 5, a pressure relief hole 6, a compression screw 7, and a full-edge insert groove 8 and a top-edge insert groove 9 which correspond to each other; the full-edge milling blade 2 and the top-edge milling blade 3 are respectively assembled on the full-edge blade groove 8 and the top-edge blade groove 9 by the compression screws 7 and are overlapped to form a blade for finish milling tooth profile; the arrangement of the blades with the negative rake angle of 17 degrees reduces the stress, strain and deformation of the blade groove in the milling process, and improves the milling stability and the strength of the cutter head; in the milling process, the deformation and the milling force received by the top of the cutter head are the largest, the full-edge milling blade 2 and the top-edge milling blade 3 reduce the milling force of a single milling blade through the staggered lap distribution of the two blades, the blade abrasion is reduced, and the milling efficiency is improved.
16 groups of milling cutter blades are equidistantly arranged on two sides of the milling cutter disc 1, wherein 8 full-edge milling cutter blades 2 and 8 top-edge milling cutter blades 3 are distributed on one side of the milling cutter disc 1; the full-edge milling blade 2 and the top-edge milling blade 3 are arranged in a clockwise arrangement mode, so that the cutting efficiency is improved.
The full-edge milling cutter blade 2 and the top-edge milling cutter blade 3 are arranged according to a negative rake angle of 17 degrees, and the edge shape of the blades is an edge-shaped curve obtained by coordinate transformation of a standard straight tooth external gear profile, wherein the edge shape of the full-edge milling cutter blade 2 is a full edge, and the edge shape of the top-edge milling cutter blade 3 is a partial arc of a cutting tooth bottom.
The full-edge blade grooves 8 and the top-edge blade grooves 9 are arranged according to the negative rake angle of 17 degrees through ANSYS software analysis, so that the stress, strain and deformation of the blade grooves in the milling process are reduced, and the milling stability and the cutter disc strength are improved; the fastening screw mounting surface of the full-edge blade groove 8 is parallel to the tangent plane of the cutter head inclined plane corresponding to the full-edge blade groove, and the included angle between the fastening screw mounting surface of the top-edge blade groove 9 and the tangent plane of the cutter head inclined plane corresponding to the top-edge blade groove is 10 degrees, so that the strength of the top-edge milling blade 3 can be improved.
As shown in fig. 2 and 3, the full-edge chip flute 5 and the top-edge chip flute 4 adopt a smooth fluid curved surface design, and the chip flutes are calculated according to the feeding amount and the machined gear modulus by introducing a chip-containing coefficient, so that the chip-containing requirements are met; the direction of the full-edge chip groove 5 is parallel to the direction of the full-edge blade groove 8; the direction of the top edge chip groove 4 is vertical to the paper surface, so that materials are saved, and the strength of the cutter head is improved; the design is convenient for smooth chip removal and reduces the abrasion of the blade groove.
The pressure relief holes 6 facilitate the removal of the full-edge milling blade 2.
The invention has reasonable structure and ensures smooth milling, and the designed basic sizes of the cutter head and parts are as follows: the diameter of the cutter head is 400mm, a hole with the diameter of 80mm is formed in the middle, and the size of the hole is determined according to the installation requirement; the full-edge milling blade 2 and the top-edge milling blade 3 are arranged according to a negative rake angle of 17 degrees, and the edge shapes of the full-edge milling blade and the top-edge milling blade are obtained by performing coordinate transformation fitting according to the tooth profile of a straight-tooth external cylindrical gear with a standard modulus, so that the stress and deformation borne by a blade groove during cutting are reduced; the full-edge milling blade 2 is 32mm long, 10mm wide and 7mm high, the top of the full-edge milling blade is provided with a tooth profile fitted by coordinate transformation, the top-edge milling blade 3 is 17mm long, 10mm wide and 6mm high, and holes with the diameter of 4mm are formed in the full-edge milling blade 2 and the top-edge milling blade 3 so as to facilitate the assembly of the blades; the full-edge blade groove 8 and the top-edge blade groove 9 are arranged according to a negative rake angle of 17 degrees, the full-edge blade groove 8 is 30mm long, 10mm wide and 5.5mm deep, the top-edge blade groove 9 is 15mm long, 10mm wide and 7mm deep, an included angle between the mounting surface of the top-edge blade groove 9 and a tangent plane of a corresponding cutter head inclined arc surface is 10 degrees, and threaded holes with the diameter of 4mm are formed in the full-edge blade groove 8 and the top-edge blade groove 9, so that blades can be assembled conveniently; the chip grooves 6 comprise two types, and are equivalently formed into the volume of a cylinder with a certain radius according to the feeding amount and the processed gear modulus by introducing a chip containing coefficient, and a right-angled triangle of an external tangent circle is made for stretching and cutting to meet the chip containing requirement; the direction of the top edge chip groove 4 is perpendicular to the paper surface, the top edge chip groove is formed by stretching and cutting a fillet of a right-angled triangle, a right-angled edge of the top edge chip groove is collinear with the top edge chip groove 9, the side length of the right-angled edge is 17mm, the radius of an arc is 4mm, and an included angle between a bevel edge and the right-angled edge is 60 degrees; the direction of the full-edge chip removal groove 5 is the same as the length direction of the full-edge blade groove 2, the cross section of the full-edge chip removal groove is a right-angled triangle with an arc, the diameter of an inscribed circle of the triangle is 12mm, the side length of the right angle is 25mm, and the diameter of the arc is 6mm, and the chip removal groove is designed to enable chip removal to be smooth and reduce abrasion; the pressure relief hole 6 is positioned in the full-edge blade groove 8, is perpendicular to the paper surface as shown in fig. 2 and 3, has a diameter of 5mm, and is convenient to disassemble when the blade is damaged; the full-edge blade grooves 8 and the top-edge blade grooves 9 are subjected to hole digging treatment at right-angle corners far away from chip grooves, the hole diameter is 3mm, and the design can prevent the blades and the blade grooves from being damaged due to overlarge stress at the corners.
The invention provides a double-blade large-modulus staggered tooth finish milling disc-shaped milling cutter arranged according to a negative rake angle of 17 degrees, wherein a full-edge milling blade 2 and a top-edge milling blade 3 are arranged according to the negative rake angle of 17 degrees, so that the stress, strain and deformation of a blade groove in the milling process are reduced, and the milling stability and the strength of a cutter disc are improved; in the milling process, the deformation and the milling force received by the top of the cutter head are the largest, the milling force of a single milling blade is reduced by the full-edge milling blade 2 and the top-edge milling blade 3 through the staggered overlapping distribution of the two blades, the blade abrasion is reduced, and the milling efficiency is improved.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A large-modulus indexable formed finish milling disc type cutter is characterized by comprising a milling disc (1), a full-edge milling blade (2), a top-edge milling blade (3), a top-edge milling blade chip discharge groove (4), a full-edge milling blade groove (5), a pressure relief hole (6) and a compression screw (7), wherein the full-edge milling blade groove (8) and the top-edge milling blade groove (9) are correspondingly formed; the full-edge milling blade (2) and the top-edge milling blade (3) are assembled on the full-edge milling blade groove (8) and the top-edge milling blade groove (9) through the compression screws (7) respectively and are lapped to form a blade for finish milling tooth profiles.
2. A large module indexable forming finish milling disc-type tool according to claim 1, characterized in that the full edge milling insert (2) and the top edge milling insert (3) reduce the milling force of a single milling insert, reduce insert wear and improve milling efficiency by the staggered overlapping distribution of the two inserts.
3. A large module indexable formed finish milling disc-type tool according to claim 1, wherein 16 sets of milling inserts are equidistantly arranged on both sides of the milling disc (1), wherein 8 full-edge milling inserts (2) and 8 top-edge milling inserts (3) are distributed on one side of the milling disc (1); the full-edge milling blades (2) and the top-edge milling blades (3) are sequentially arranged in a clockwise arrangement mode, so that the cutting efficiency is improved.
4. The large module indexable formed finish milling disc-type tool according to claim 1, wherein the full edge milling insert (2) and the top edge milling insert (3) are edge-shaped curves obtained by coordinate transformation of a standard straight tooth external gear profile due to the inserts arranged at a negative rake angle of 17 degrees, wherein the edge of the full edge milling insert (2) is a full edge and the edge of the top edge milling insert (3) is a partial arc of a cutting tooth bottom.
5. A high modulus indexable formed finish milling disc cutter according to claim 1, wherein the full edge insert pocket (8) and the top edge insert pocket (9), as analyzed by ANSYS software, are arranged at a negative rake angle of 17 degrees, reducing insert pocket stress, strain and distortion during milling, improving milling stability and disc strength; the fastening screw mounting surface of the full-edge blade groove (8) is parallel to the tangent plane of the corresponding cutter head inclined plane, and the included angle between the fastening screw mounting surface of the top-edge blade groove (9) and the tangent plane of the corresponding cutter head inclined plane is 10 degrees, so that the strength of the top-edge milling blade (3) can be improved.
6. The large-modulus indexable forming finish milling disc-shaped cutter as claimed in claim 1, wherein the full-edge chip flutes (5) and the top-edge chip flutes (4) adopt a smooth fluid curved surface design, and the chip flutes are calculated according to the feed amount and the machined gear modulus by introducing a chip-containing coefficient so as to meet the chip-containing requirement; the direction of the full-edge chip groove (5) is parallel to the full-edge blade groove (8); the direction of the top edge chip groove (4) is vertical to the paper surface, so that materials are saved, and the strength of the cutter head is improved; the design is convenient for smooth chip removal and reduces the abrasion of the blade groove.
7. A large module indexable profiled finish milling disc-type tool according to claim 1, characterized in that the relief hole (6) facilitates removal of the full edge milling insert (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210980636.1A CN115475989A (en) | 2022-08-16 | 2022-08-16 | Large-modulus indexable forming finish milling disc-shaped cutter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210980636.1A CN115475989A (en) | 2022-08-16 | 2022-08-16 | Large-modulus indexable forming finish milling disc-shaped cutter |
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| CN115475989A true CN115475989A (en) | 2022-12-16 |
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| CN202210980636.1A Pending CN115475989A (en) | 2022-08-16 | 2022-08-16 | Large-modulus indexable forming finish milling disc-shaped cutter |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2853246Y (en) * | 2005-12-22 | 2007-01-03 | 哈尔滨第一工具有限公司 | Transposition milling cutter cross joining to rotor dove tail groove |
| CN200991794Y (en) * | 2006-12-26 | 2007-12-19 | 南京高速齿轮制造有限公司 | Platelike gear milling cutter |
| CN201020572Y (en) * | 2007-02-15 | 2008-02-13 | 哈尔滨第一工具制造有限公司 | Indexable large module gear milling cutter |
| CN201205625Y (en) * | 2008-06-03 | 2009-03-11 | 哈尔滨第一工具制造有限公司 | Indexable helical teeth annular gear disk milling cutter |
| CN103223532A (en) * | 2013-04-24 | 2013-07-31 | 唐山中材重型机械有限公司 | Gear tooth bottom forming milling cutter |
| CN104785836A (en) * | 2015-05-04 | 2015-07-22 | 吴江市宏宇机械有限公司 | Indexable rack milling cutter disc |
| CN212239460U (en) * | 2020-05-27 | 2020-12-29 | 美戈利(浙江)科技有限公司 | Indexable gear milling cutter disc |
| CN113751776A (en) * | 2021-08-09 | 2021-12-07 | 南京工业大学 | Indexable forming gear milling cutter head device |
| CN113878178A (en) * | 2021-09-06 | 2022-01-04 | 南京工大数控工具有限公司 | Flexible envelope machining method for cutter path of gear milling cutter head |
-
2022
- 2022-08-16 CN CN202210980636.1A patent/CN115475989A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2853246Y (en) * | 2005-12-22 | 2007-01-03 | 哈尔滨第一工具有限公司 | Transposition milling cutter cross joining to rotor dove tail groove |
| CN200991794Y (en) * | 2006-12-26 | 2007-12-19 | 南京高速齿轮制造有限公司 | Platelike gear milling cutter |
| CN201020572Y (en) * | 2007-02-15 | 2008-02-13 | 哈尔滨第一工具制造有限公司 | Indexable large module gear milling cutter |
| CN201205625Y (en) * | 2008-06-03 | 2009-03-11 | 哈尔滨第一工具制造有限公司 | Indexable helical teeth annular gear disk milling cutter |
| CN103223532A (en) * | 2013-04-24 | 2013-07-31 | 唐山中材重型机械有限公司 | Gear tooth bottom forming milling cutter |
| CN104785836A (en) * | 2015-05-04 | 2015-07-22 | 吴江市宏宇机械有限公司 | Indexable rack milling cutter disc |
| CN212239460U (en) * | 2020-05-27 | 2020-12-29 | 美戈利(浙江)科技有限公司 | Indexable gear milling cutter disc |
| CN113751776A (en) * | 2021-08-09 | 2021-12-07 | 南京工业大学 | Indexable forming gear milling cutter head device |
| CN113878178A (en) * | 2021-09-06 | 2022-01-04 | 南京工大数控工具有限公司 | Flexible envelope machining method for cutter path of gear milling cutter head |
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