CN101769280A - Cold extruding processing method of spline housing and spline housing produced by same - Google Patents

Cold extruding processing method of spline housing and spline housing produced by same Download PDF

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Publication number
CN101769280A
CN101769280A CN200910215443A CN200910215443A CN101769280A CN 101769280 A CN101769280 A CN 101769280A CN 200910215443 A CN200910215443 A CN 200910215443A CN 200910215443 A CN200910215443 A CN 200910215443A CN 101769280 A CN101769280 A CN 101769280A
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China
Prior art keywords
spline housing
spline
cold
processing method
cold extruding
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Pending
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CN200910215443A
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Chinese (zh)
Inventor
李宏
徐华福
杨海平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UNIVERSAL DRIVING SHAFT CO Ltd HANZHOU CITY
Wanxiang Group Corp
Original Assignee
UNIVERSAL DRIVING SHAFT CO Ltd HANZHOU CITY
Wanxiang Group Corp
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Application filed by UNIVERSAL DRIVING SHAFT CO Ltd HANZHOU CITY, Wanxiang Group Corp filed Critical UNIVERSAL DRIVING SHAFT CO Ltd HANZHOU CITY
Priority to CN200910215443A priority Critical patent/CN101769280A/en
Publication of CN101769280A publication Critical patent/CN101769280A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a cold extruding processing method of a spline housing and the spline housing produced by the same. The cold extruding processing method of the spline housing comprises the following steps: blanking of a tubular blank, annealing of the blank, performing turning on an inner bore, saponification of phosphorus, hole shrinkage and extrusion, cold extrusion of the spline and turning and shaping. The wall thicknesses of the larger end, transmission section, and smaller end of the spline manufactured by the method are equal, wherein yield torsion of the spline housing is more than 30,000Nm. The invention has the beneficial effects: firstly, the application of two cold extruding molding processes ensures that the strengthen of the material are improved after the cold-workhardening, the whole part is designed in an equicohesive manner, and greatly improves the material utilization and reduces the process cost; secondly, the processing procedures are reduced, the processing cycle of the part is shorten, and the production efficiency is improved while the cost is lowered; and thirdly, the hot processing procedures such as forging and tempering with high-energy consumption and pollution are cancelled, thus achieving obvious effects of energy saving and emission reduction.

Description

The spline housing of a kind of spline housing cold extruding processing method and production thereof
Technical field
The present invention relates to the spline housing that uses on a kind of transmission shaft, the spline housing of especially a kind of spline housing cold extruding processing method and production thereof.
Background technique
The spline housing part that uses on the transmission shaft of heavy-duty commercial vehicle generally all is to adopt the experience design method at present, and part is comparatively heavy.Raw material generally adopt thick-wall seamless, and machining process comprises that tubing blanking, local heating forge that the large diameter A end of jumping-up, modified, endoporus Vehicle Processing, internal spline are repeatedly broached, the cylindrical Vehicle Processing.The spline housing stock utilization of this design and processing only 40%, and forging, modified heat treatment and multiple tracks Vehicle Processing technology and internal spline Broaching Technology are arranged, energy consumption and smear metal are more, and processing cost and cost of material are higher.
Summary of the invention
The present invention is directed to the shortcoming of above-mentioned prior art, the few spline housing cold extruding processing method of a kind of consumptive material power consumption and the spline housing of production thereof are provided.
The present invention solves the technological scheme that its technical problem adopts:
A kind of spline housing cold extruding processing method may further comprise the steps,
1) pipe blanking.Adopt the sawing machine blanking, end surface inclination is less than 1 °;
2) rough annealing.Heating-up temperature 800-880 ℃, be incubated 3 hours, the air cooling of coming out of the stove after being cooled to 500 ℃ with stove;
3) inner hole outer circularity Vehicle Processing.Elder generation cylindrical turning and end face take off check, qualified after car endoporus again.Guarantee that concentricity is in 0.1mm;
4) phospholeumization.Process is divided into degreasing, washing, table accent, phosphatization, washing, saponification;
5) undergauge extruding.400 t hydraulic press are adopted in the extrusion modling of blank undergauge, and pressure range is at 4-6MPa;
6) spline cold-extruded.Internal spline is cold extrusion shaped, adopts 800 t hydraulic press, and pressure range is at 6-10MPa;
7) cylindrical Vehicle Processing moulding.With the internal spline is benchmark, and the small end cylindrical is beated and is controlled in the 0.15mm.
A kind of spline housing that uses above method to make, big end, changeover portion equate that with the small end wall thickness this spline housing surrender moment of torsion is greater than 30000Nm.
The invention has the beneficial effects as follows: one, the application of twice cold extruding formation process, make material intensity after flow harden be improved, whole part has realized equicohesive design, has improved stock utilization greatly and has reduced the technology cost; Two, not only reduce manufacturing procedure, shortened the process-cycle of part, when reducing cost, improved manufacturing efficiency; Three, cancel the hot procedure that forging and modified twice highly energy-consuming have pollution, obtained tangible effects of energy saving and emission reduction.
Description of drawings
Fig. 1 is the structural representation of spline housing of the present invention;
Fig. 2 is the structural representation of conventional spline cover;
Description of reference numerals: hold 1 greatly, changeover portion 2, small end 3, the big end 4 of tradition, conventional transition section 5, traditional small end 6.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
A kind of embodiment of spline housing cold extruding processing method: may further comprise the steps,
1) pipe blanking.Rise saw blade, shake the charging of sawing machine handle, range estimation end face and backer's gap confirms that charging puts in place, opening device saw material.Adopt the sawing machine blanking, end surface inclination is less than 1 °;
2) rough annealing.That will material erects puts into charging basket, utilizes the car that sets sail charging basket is sling and to be placed on the working platform, and three baskets of products are placed in each heat treatment on working platform, open the sramana product is sent in the stove, treat that platform enters in the stove fully, shuts the sramana, open the duct thermostat on the control box, temperature regulation to the alarm equipment alarm temperature extremes, is accessed corresponding program, heat and be incubated, after insulation finishes, open the sramana, the control platform goes out button, product is moved to stove cool off outward.Heating-up temperature 800-880 ℃, be incubated 3 hours, the air cooling of coming out of the stove after being cooled to 500 ℃ with stove;
3) inner hole outer circularity Vehicle Processing.Clamping product on numerically controlled lathe is transferred program cylindrical turning and end face, takes off check, qualified after clamping once more, transfer program car endoporus.Guarantee that concentricity is in 0.1mm;
4) phospholeumization.Process is divided into degreasing, washing, table accent, phosphatization, washing, saponification, is typical cold hobbing phospholeum metallization processes;
5) undergauge extruding.Put material into die, primer fluid press button, patrix is descending, and the extrusion modling of blank undergauge starts the backhaul button, and mould is up, takes out shaping blank.Adopt 400 t hydraulic press, pressure range is at 4-6MPa;
6) spline cold-extruded.Put material into die, primer fluid press button, patrix is descending, and the internal spline cold extrusion forming starts the backhaul button, and patrix is up, starts the liftout button and ejects blank, takes out shaping blank.Adopt 800 t hydraulic press, pressure range is at 6-10MPa;
7) cylindrical Vehicle Processing moulding.Clamping product on numerically controlled lathe is transferred program cylindrical turning and end face, takes off check.With the internal spline is benchmark, and the small end cylindrical is beated and is controlled in the 0.15mm.
Adopt cold extruding formation process, belong to chipless process, cutting stock weight alleviates 36%, and stock utilization brings up to 70%, and pts wt alleviates 21% under the situation of intensity raising 15%, and has cancelled blank forging and modified heat treatment.
A kind of embodiment who uses the spline housing of above method making: according to design, and the spline housing that uses above method to produce, its big end 1, changeover portion 2 equate that with small end 3 wall thickness this spline housing is surrendered moment of torsion greater than 30000Nm.
Adopt the equal strength principle during design, as Fig. 1,2, at first, and former relatively forge hot spline housing, the cold-extruded spline housing will be held 1 shorten length greatly, and thickness changes thin; Secondly, with hold greatly 1 with small end 3 between 2 sections gradients of transition change tiltedly, make transition more steady, changeover portion thickness is changed thin, make big end 1, small end 3, changeover portion 2 wall thickness equal, in economical with materials, be convenient to the cold extrusion forming of spline housing; And small end 3 length and internal spline length remain unchanged substantially, and be constant substantially with this spline fitted effective length that guarantees spline housing.In the design, set up former forge hot spline housing model and cold-extruded spline housing model.Because of the intensity of former forge hot spline housing need guarantee to surrender moment of torsion greater than 30000N.m, so the intensity of cold-extruded spline housing also needs greater than 30000N.m.In CAE finite element analysis process, to the load of forge hot spline housing model and cold-extruded spline housing model loading 30000N.m, it is basic identical that both analyze the maximum stress value that is drawn respectively, guarantees that thus both equate at the design phase theoretical strength.Then respectively forge hot spline housing and cold-extruded spline housing sample are carried out the quiet stand test of turning round again, test result shows that both intensity is identical.The result of theory analysis and verification experimental verification has proved that the cold-extruded spline housing realized lightweight equal strength design.
In addition to the implementation, the present invention can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.

Claims (2)

1. spline housing cold extruding processing method, it is characterized in that: this method may further comprise the steps,
1) pipe blanking: adopt the sawing machine blanking, end surface inclination is less than 1 °;
2) rough annealing: heating-up temperature 800-880 ℃, be incubated 3 hours, the air cooling of coming out of the stove after being cooled to 500 ℃ with stove;
3) inner hole outer circularity Vehicle Processing: first cylindrical turning and end face, take off check, qualified after car endoporus again, guarantee that concentricity is in 0.1mm;
4) phospholeumization: process is divided into degreasing, washing, table accent, phosphatization, washing, saponification;
5) undergauge extruding: the extrusion modling of blank undergauge, adopt 400 t hydraulic press, pressure range is at 4-6MPa;
6) spline cold-extruded: internal spline is cold extrusion shaped, adopts 800 t hydraulic press, and pressure range is at 6-10MPa;
7) cylindrical Vehicle Processing moulding is a benchmark with the internal spline, and the small end cylindrical is beated and is controlled in the 0.15mm.
2. a spline housing of making according to the described method of claim 1 comprises big end (1), changeover portion (2) and small end (3), it is characterized in that: described big end (1), changeover portion (2) equate that with small end (3) wall thickness this spline housing surrender moment of torsion is greater than 30000Nm.
CN200910215443A 2009-12-28 2009-12-28 Cold extruding processing method of spline housing and spline housing produced by same Pending CN101769280A (en)

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Application Number Priority Date Filing Date Title
CN200910215443A CN101769280A (en) 2009-12-28 2009-12-28 Cold extruding processing method of spline housing and spline housing produced by same

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102335810A (en) * 2011-08-19 2012-02-01 江苏森威精锻有限公司 Method for forming precise slender internal spline tube
CN103350346A (en) * 2013-07-06 2013-10-16 江苏威鹰机械有限公司 Power takeoff transmission shaft cold precision forging plastic forming process
CN103447774A (en) * 2013-09-11 2013-12-18 宁波市奇精机械有限公司 Splined sleeve processing technology
CN103612069A (en) * 2013-10-24 2014-03-05 丽水市信毅单向器有限公司 Method for manufacturing hollow shaft of isolator
CN105080995A (en) * 2015-09-18 2015-11-25 无锡贺邦金属制品有限公司 Spline housing extruding and moulding technique
CN106424191A (en) * 2016-11-18 2017-02-22 重庆恒望机械有限公司 Blind hole rectangular spline cold extrusion forming method
CN107138926A (en) * 2017-06-20 2017-09-08 江苏威鹰机械有限公司 Automobile CVT automatic transmission guide wheel shaft manufacturing process
CN107414415A (en) * 2017-06-14 2017-12-01 江苏森威精锻有限公司 A kind of accurate external splines pipe one-step moulding method
CN107641684A (en) * 2017-09-30 2018-01-30 徐州翔凯重工科技有限公司 A kind of processing technology of spline housing
CN108941231A (en) * 2018-06-22 2018-12-07 常熟市金华机械股份有限公司 A kind of cold extrusion processing technics and particular manufacturing craft of steering pump of automobile lower axle
CN110125618A (en) * 2019-04-30 2019-08-16 海盐猛凌汽车配件有限公司 A kind of Pan Gu's blank processing technology

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102335810A (en) * 2011-08-19 2012-02-01 江苏森威精锻有限公司 Method for forming precise slender internal spline tube
CN102335810B (en) * 2011-08-19 2013-11-06 江苏森威精锻有限公司 Method for forming precise slender internal spline tube
CN103350346A (en) * 2013-07-06 2013-10-16 江苏威鹰机械有限公司 Power takeoff transmission shaft cold precision forging plastic forming process
CN103350346B (en) * 2013-07-06 2016-06-08 江苏威鹰机械有限公司 Power takeoff driving shaft cold closed-die forging plastic forming technique
CN103447774B (en) * 2013-09-11 2016-05-25 奇精机械股份有限公司 A kind of spline housing processing technology
CN103447774A (en) * 2013-09-11 2013-12-18 宁波市奇精机械有限公司 Splined sleeve processing technology
CN103612069A (en) * 2013-10-24 2014-03-05 丽水市信毅单向器有限公司 Method for manufacturing hollow shaft of isolator
CN105080995A (en) * 2015-09-18 2015-11-25 无锡贺邦金属制品有限公司 Spline housing extruding and moulding technique
CN106424191A (en) * 2016-11-18 2017-02-22 重庆恒望机械有限公司 Blind hole rectangular spline cold extrusion forming method
CN107414415A (en) * 2017-06-14 2017-12-01 江苏森威精锻有限公司 A kind of accurate external splines pipe one-step moulding method
CN107138926A (en) * 2017-06-20 2017-09-08 江苏威鹰机械有限公司 Automobile CVT automatic transmission guide wheel shaft manufacturing process
CN107641684A (en) * 2017-09-30 2018-01-30 徐州翔凯重工科技有限公司 A kind of processing technology of spline housing
CN108941231A (en) * 2018-06-22 2018-12-07 常熟市金华机械股份有限公司 A kind of cold extrusion processing technics and particular manufacturing craft of steering pump of automobile lower axle
CN110125618A (en) * 2019-04-30 2019-08-16 海盐猛凌汽车配件有限公司 A kind of Pan Gu's blank processing technology

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Open date: 20100707