CN102069237B - Push-broaching molding process of gear part of ring gear - Google Patents
Push-broaching molding process of gear part of ring gear Download PDFInfo
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- CN102069237B CN102069237B CN2010105999019A CN201010599901A CN102069237B CN 102069237 B CN102069237 B CN 102069237B CN 2010105999019 A CN2010105999019 A CN 2010105999019A CN 201010599901 A CN201010599901 A CN 201010599901A CN 102069237 B CN102069237 B CN 102069237B
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Abstract
The invention discloses a push-broaching molding process of a gear part of a ring gear. The process sequentially comprises the following steps that: (1) firstly a ring gear billet which is horizontally arranged is located and mounted on a worktable; (2) set push broaches are sequentially and vertically mounted on a pressure head respectively, wherein, the push broaches and the ring gear billet are coaxial, small ends of the push broaches are positioned on the bottom ends thereof, and big ends of the push broaches are positioned on the upper ends thereof; and (3) in the case of push broaching, the direction of thrust of the pressure head acting on the upper ends of the push broaches is consistent with the motion direction of the push broaches, the descending speed of the push broaches is 8-10mm/s, and the ascending speed of the push broaches is 14-18mm/s, wherein, (3.1) a push broach No.1 is adopted for locating and push-broaching the gear part under a cooling condition; (3.2) a push broach No.2 is adopted for push-broaching the gear part for rough molding under a cooling condition; and (3.3) the push broaches No. 3, 4, 5 are sequentially adopted for push-broaching the gear part for precision molding under a cooling condition. The adopted push broaches have short axial size and good rigidity, thus the push-broaching molding process has the advantages of fast push-broaching speed, stable quality and high production efficiency; and short stroke is required for the pressure head of a press machine in the push-broaching molding process, thus the press machine is easily purchased.
Description
Technical field
The present invention relates to a kind of metal cutting, specifically, the present invention relates to a kind of technology that realizes the shaping of ring gear tooth portion with the broaching form.
Background technology
The ring gear that is installed in heavy-duty car back axle wheel limit is a kind of driving member that bears heavy load, belongs to the key components and parts in the car transmissions.The specification requirement of ring gear is high, and manufacture difficulty is big, must just can reach designing requirement through precision cutting processing.The agent structure of ring gear is characterized as the thin-walled circle, and the circle inwall is provided with tooth, and the prior art of engaging tooth realizes production with slotting technology usually in making.Slotting technology is lower a kind of of production efficiency in the metal cutting, and the ring gear under the normal condition about Φ 200mm of processing need consume 60～70 minutes man-hours, and this production efficiency does not obviously meet requirements of mass production.Ring gear tooth portion forming technique also has Broaching Technology except that slotting technology.Broaching Technology belongs to a kind of precision cutting technology of field of machining, and the single-blade cutting output is very little, and this technology breaks the whole up into parts cutting output, obtains finished product through order layering form-cutting.The modulus of gear is directly proportional with tooth depth, and big modulus tooth cutting output is big, and the cutting edge that needs sufficient amount is shared cutting output, and how cutting edge certainly will increase the broaching tool axial dimension.For example, broaching Φ 200mm bore and modulus are the ring gear of 4mm, need broaching tool long about 3m could rationally share cutting output; And the broaching tool manufacturing of 3m length is very difficult; In addition the broaching tool axial-radial of 3m length is than big, and the rigidity of broaching tool own is relatively poor, and intensity is also very low; The broaching tool of ultra-fine length can not be used for producing at all, puts off until some time later the broaching machine that does not also have the long broaching tool of supporting 3m on the market.Broaching Technology should not be made the ring gear of heavy caliber, big modulus thus, only is fit to broaching small dimension, close-toothed ring gear.
Summary of the invention
The present invention is primarily aimed at the deficiency of prior art, proposes the ring gear tooth portion shaping broaching technology of a kind of production efficiency height, good processing accuracy, low cost of manufacture.This process using substep broaching, progressively manufacturing process is realized continuous productive process.
The present invention realizes technical goal through following technical proposals.
Ring gear tooth portion shaping broaching technology is characterized in that following these steps to realizing producing:
(1) with the ring gear blank location and installation of horizontal on workbench;
(2) the push broach order of setting vertically is installed on the pressure head, push broach and ring gear blank coaxial line, small end is positioned at the bottom, and big end is positioned at the upper end;
(3) during broaching, the thrust direction that pressure head acts on the push broach upper end is consistent with the push broach direction of motion, and the push broach downstream rate is 8～10mm/s, and the push broach speed uplink is 14～18mm/s, and every layer of cutting edge cutting output of push broach is 0.12mm～0.50mm;
(3.1) under cooling condition, accomplish the location broaching processing of tooth portion with No. 1 push broach;
(3.2) processing of tooth portion dumming broaching is accomplished in No. 2 push broach that change the outfit under cooling condition:
(3.3) the smart shaping broaching processing of tooth portion is accomplished in 3,4, No. 5 push broach that change the outfit respectively in order under cooling condition.
In the above-mentioned technology, the every layer of cutting edge cutting output of No. 1 push broach that is used for the location broaching processing of tooth portion is 0.12mm～0.14mm, and the push broach downstream rate is 9～10mm/s.The every layer of cutting edge cutting output of No. 2 push broach that is used for the dumming broaching processing of tooth portion is 0.40mm～0.50mm, and the push broach downstream rate is 8.5～9.0mm/s.The every layer of cutting edge cutting output of 3,4, No. 5 push broach that is used for the smart shaping broaching processing of tooth portion is 0.14mm～0.18mm, and the push broach downstream rate is 8.0～9.0mm/s.Push broach speed uplink preferred value is 15～16mm/s.
The present invention compared with prior art has following good effect:
1, active force is at the big end of push broach during broaching, and the cutter hub pressurized because of metal material compressive strength rate tensile strength is high, so push broach is higher than broaching tool structural strength, helps improving stock-removing efficiency.
2, share cutting output to push broach jointly by many, the push broach axial dimension is shorter than broaching tool, and the broaching stroke is short, and therefore supporting press is prone to purchase.
3, the push broach axial dimension is short, makes easily, and it is little that cutter hub damages cost.
Description of drawings
Accompanying drawing is a broaching embodiment sketch map of the present invention.
The specific embodiment
According to shown in the accompanying drawing and combine embodiment, the present invention is described further below.
Accompanying drawing is a broaching embodiment sketch map of the present invention, and its technical process is following:
(1) at first with ring gear 3 location and installation of horizontal on workbench 4;
(2) on the pressure head 1 of press in order number difference the push broach 2 of setting size vertically is installed, push broach 2 and ring gear 3 coaxial lines, small end is positioned at the bottom, big end is positioned at the upper end;
(3) during broaching, the thrust direction that pressure head 1 acts on push broach 2 upper ends is consistent with push broach 2 down directions, and the push broach downstream rate is 8～10mm/s, and every layer of cutting edge cutting output of push broach is 0.12mm～0.50mm;
Present embodiment is a broaching processing 9990.1234.0121 steyr ring gear, and this ring gear internal tooth to be processed is an involute spline, and the structural parameters of this spline are seen table 1, and supporting push broach 2 primary structures and broaching parameter are seen table 2.Because of this embodiment size and modulus are bigger, so broaching processing adopts 5 push broach substep shaping by stock removal, relevant process route and technological parameter are following:
1, push away 2 with No. 1 and under cooling condition, accomplish the location broaching processing of tooth portion, push broach 2 every layer of cutting edge cutting output are 0.13mm, and push broach 2 downstream rates are 10mm/s.
2, the dumming broachings processing of tooth portions is accomplished in change the outfit No. 2 push broach 2, push broach 2 every layer of cutting edge cutting output 0.45mm, and push broach 2 downstream rates are 8.5mm/s.
3, the shaping broachings processing of tooth portions is accomplished in change the outfit respectively in order 3,4, No. 5 push broach 2, and 3 is every layer of cutting output of push broach 2 0.16mm/s.
Table 1: involute spline parameter
According to the present embodiment cutting output, set with 5 push broach 2 completion tooth portion shaping broachings, whenever see the following form push broach 2 main broaching parameters:
Table 2: push broach 2 primary structures and broaching parameter list
Present embodiment is done broaching shaping processing through 5 push broach 2 that change the outfit, because push broach 2 axial dimensions are short, and good rigidly; From the big end applied thrust of push broach 2, push broach 2 is cut under the situation of pressurized in addition, the cutting speed fast several times of broaching relatively; And push broach 2 is not fragile; Ring gear 3 quality of broaching processing are good and stable, and most important broaching requires weak point to pressure head 1 stroke of press, and press equipment is prone to purchase.
Press the internal gear parameter among the present invention and make push broach 2, can realize the broaching processing of the internal gear of other bore with same process, its workmanship is similar with above-mentioned processing involute spline quality.
Claims (2)
1. ring gear tooth portion shaping broaching technology is characterized in that following these steps to realizing producing:
(1) with the ring gear blank location and installation of horizontal on workbench;
(2) the push broach order of setting vertically is installed on the pressure head, push broach and ring gear blank coaxial line, small end is positioned at the bottom, and big end is positioned at the upper end;
(3) during broaching, the thrust direction that pressure head acts on the push broach upper end is consistent with the push broach direction of motion, and the push broach downstream rate is 8～10mm/s, and the push broach speed uplink is 14～18mm/s, and every layer of cutting edge cutting output of push broach is 0.12mm～0.50mm;
(3.1) under cooling condition, accomplish the location broaching processing of tooth portion with No. 1 push broach;
(3.2) processing of tooth portion dumming broaching is accomplished in No. 2 push broach that change the outfit under cooling condition:
(3.3) the smart shaping broaching processing of tooth portion is accomplished in 3,4, No. 5 push broach that change the outfit respectively in order under cooling condition.
2. ring gear tooth according to claim 1 portion shaping broaching technology is characterized in that: the every layer of cutting edge cutting output of No. 1 push broach that is used for the location broaching processing of tooth portion is 0.12mm～0.14mm, and the push broach downstream rate is 9.0～10mm/s; The every layer of cutting edge cutting output of No. 2 push broach that is used for tooth portion dumming broaching is 0.40mm～0.50mm, and the push broach downstream rate is 8.5～9.0mm/s; The every layer of cutting edge cutting output of 3,4, No. 5 push broach that is used for the smart shaping broaching processing of tooth portion is 0.14mm～0.18mm, and the push broach downstream rate is 8.0～9.0mm/s, and the speed uplink of all push broach is 15～16mm/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105999019A CN102069237B (en) | 2010-12-17 | 2010-12-17 | Push-broaching molding process of gear part of ring gear |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105999019A CN102069237B (en) | 2010-12-17 | 2010-12-17 | Push-broaching molding process of gear part of ring gear |
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| Publication Number | Publication Date |
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| CN102069237A CN102069237A (en) | 2011-05-25 |
| CN102069237B true CN102069237B (en) | 2012-08-22 |
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| CN107322239B (en) * | 2017-06-30 | 2019-01-04 | 贵州凯星液力传动机械有限公司 | A kind of processing method of one-way clutch outer ring |
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| US4761867A (en) * | 1987-02-12 | 1988-08-09 | Eaton Corporation | Method for producing ring gears for heavy-duty drive axles |
| CN1094409C (en) * | 1998-03-13 | 2002-11-20 | 张元增 | Method for making speed changer gear |
| JP4191336B2 (en) * | 1999-09-13 | 2008-12-03 | ブイアイブイエンジニアリング株式会社 | Manufacturing method of gear case |
| CN100391688C (en) * | 2006-03-15 | 2008-06-04 | 中国第一汽车集团公司无锡柴油机厂 | Art for mfg. Austempered Ductile iron gear for diesel engine |
| CN101844306A (en) * | 2010-06-17 | 2010-09-29 | 株洲齿轮有限责任公司 | Processing method of annular gear of thin-wall member |
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Address after: 225500 Li Zhuang village, Hua Gang Town, Jiangyan District, Taizhou, Jiangsu Patentee after: Jiangsu Lihua machinery Limited by Share Ltd Address before: 225516 Taizhou City Lihua Machinery Co., Ltd., hugang Town, Jiangyan, Jiangsu Patentee before: Taizhou Lihua Macninery Co., Ltd. |
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