CN102581051B - Cold extrusion forming method for lute hole of axle housing of automobile drive axle and pressing die forming machine tool - Google Patents

Cold extrusion forming method for lute hole of axle housing of automobile drive axle and pressing die forming machine tool Download PDF

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Publication number
CN102581051B
CN102581051B CN201110363418.5A CN201110363418A CN102581051B CN 102581051 B CN102581051 B CN 102581051B CN 201110363418 A CN201110363418 A CN 201110363418A CN 102581051 B CN102581051 B CN 102581051B
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China
Prior art keywords
axle housing
lute hole
wedge shape
column
work piece
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CN201110363418.5A
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Chinese (zh)
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CN102581051A (en
Inventor
徐长群
王明琦
兀治军
张海龙
葛卫华
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三门峡合鑫机床有限公司
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Publication of CN102581051A publication Critical patent/CN102581051A/en
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Abstract

The invention discloses a cold extrusion forming method for a lute hole of an axle housing of an automobile drive axle and a pressing die forming machine tool. In the method, seamless steel pipes of certain specifications and dimensions serve as blanks. The method comprises the follow process flows: performing hot rolling two shaft heads and forming; pushing the middle parts into square shapes (changing the round pipes into square pipes); cutting out and slotting; performing whole heat treatment; forming the lute hole in the middle; shaping the axle housing; (processing the groove of the lute hole) welding a triangular plate; and performing finish machining. According to the process, procedures are relatively few; the thinning degree of the lute hole region in the middle of the axle housing is small; the axle housing has high strength; disposable equipment is low in investment; and the production efficiency is high. The whole axle housing has high strength and rigidity, high product bearing capacity, attractive appearance and few procedures. The machine tool has the characteristics of simple structure, high production efficiency, low cost, standardization of dies, low remodeling cost, energy conservation, environmental friendliness and the like.

Description

Automobile drive axle housing Chinese lute hole cold-extrusion molding method and moulded section lathe

technical field:

The present invention relates to equipment manufacture field automobile drive axle housing Chinese lute hole forming technology, be specifically related to a kind of automobile drive axle housing Chinese lute hole cold-extrusion molding method and moulded section lathe.

background technology:

Automobile axle housing is produced and is mainly contained four kinds of techniques at present, and the one, adopt casting technique, its production cost is lower, but intensity difference, profile is coarse, percent defective is high, and production environment pollution is large, can not weld the defects such as auxiliary stand.The 2nd, adopt punch forming to add the technique of welding, be welded by two parts or three part stamping parts, go out respectively two halves axle housing, become an integral housing (if half shell is not containing set square part two halves shell welding, also need to weld set square), this press welding axle housing technique process is many, cost is higher, intensity is lower, and along with the development of auto industry, press welding axle housing is in a large number for the production of axle housing.Light-duty Vehicle, even all large-scale employings of heavy goods vehicles of in-between car at present.But the shortcoming of punching weldering axle housing in use also comes out gradually, the axle housing distortion that commissure stress causes is difficult for proofreading and correct, and easily, at commissure fracture or cracking, often occurs the problems such as flexural deformation, intensity difference, leakage of oil on heavy motor truck.And need large-scale pressing equipment, firing equipment, production joint is many, hidden danger is many, profile is not attractive in appearance, the 3rd, adopt pipe, by cut hole, undergauge, contracting side, slot, rive, 12 procedures such as hole enlargement, shaping, pressing median curved surface, heating in medium frequency, contracting port, soldering set square complete.The method operation is more, and cost is high.Due to the employing hole technique that rises, the attenuation of part intermediate axle packet portion thickness, reduces this field strength and rigidity, in order to ensure intensity and the rigidity of axle housing, will increase pipe thickness, has increased weight and the cost of axle housing in addition.The 4th, adopt square tube, middle fluting, rives, expands technique.This technique is relatively simple, but square tube blank is high compared with pipe cost, and overall axle housing manufacturing cost is higher.

In recent years, along with the fast development of automobile die technology and the fast development of middle-size and small-size forcing press, be also developed rapidly for quick cold stamping (extruding) forming technique of automobile axle housing class part.But because of this technology early investment large, mould is manufactured to processing request strict, also to pass through accurate pressure design calculating, repetition test and the data verification production of could shaping, therefore, at home still in test advanced development, high volume applications is also little in auto parts and components manufacturing firm, and most producers still adopt traditional Technology of Steel Castings or piecemeal splicing welding procedure, also has the technique that only adopts hot pressing or Chinese lute hole, cold moudling axle housing middle part.But in the middle of Integral automobile axle housing, Chinese lute hole cold extruding formation process method is mostly under test at home at present.

summary of the invention:

The problem and shortage that the present invention exists at present existing several technique, proposes a kind of automobile drive axle housing Chinese lute hole cold-extrusion molding method and moulded section lathe.

The technical solution adopted in the present invention: a kind of automobile drive axle housing Chinese lute hole cold-extrusion molding method, comprises the following steps:

1, material base operation in early stage:

(1), blanking: select the pipe of suitable diameter and gauge to be cut into the pipe that needs length, caliber and wall thickness are suitable with axle housing square-section place size;

(2), two ends spindle nose moulding: utilize axle housing milling train by pipe Frequency Induction Heating, make the moulding respectively of central siphon two ends, roll out the size of axle housing two ends drawing requirement;

(3), the part side's of pushing away moulding in the middle of pipe: central siphon is put into the side's of pushing away machine and push the side of pushing away, make axle housing middle piece reach the square sectional dimension needing;

2, further (mainly) manufacturing procedure:

(1), open the elongated slot that front and back are passed through in the middle of pipe, rounding off is wanted at the two ends of groove, and the data that the width of groove, length, position are obtained according to repetition test and corresponding calculating are given;

(2), bulging is pushed in central siphon two spindle noses and middle Chinese lute hole simultaneously: two spindle noses are inwardly imposed respectively to 140-160T pressure, utilize respectively slubbing wedge shape extrusion head He Er road wedge shape extrusion head middle elongated slot portion to be imposed to the pressure of 300-330T, make progressively bulging of central siphon middle part, contact with middle Chinese lute hole forming mold cold extruding, laminating, bag pressure certain hour aftershaping; The wherein cone angle of two wedge shape extrusion heads, meets 10 °≤α≤20 °, and the width m of two road wedge shape extrusion heads, the width n of slubbing wedge shape extrusion head, and meeting certain ratio is between m:n=3:1~5:1;

3, subsequent handling:

(1), axle housing shaping: shaping is carried out in Chinese lute hole in the middle of axle housing and region, square-section corresponding to spring base (welding suspension member on axle assembly), reach the size of part requirement;

(2), in the middle of the axle housing Chinese lute hole finished edge, weldering set square in two ends, Chinese lute hole in the middle of axle housing.

Above-mentioned steps 2(2) in, imposing respectively 150T pressure at two spindle noses, middle elongated slot portion imposes the pressure of 315T.

A kind of automobile drive axle housing Chinese lute hole moulded section lathe, comprise base, column, compress guider, hydraulic cylinder and hydraulic system, the middle part of base is vertically fixed with column, column upper end is fixed with the supporter of level, supporter center is vertically provided with compressed oil cylinder, on the lower piston bar of this compressed oil cylinder, be fixed with perpendicular row slide block, these perpendicular row slide block both sides are sleeved on column, slider bottom center is provided with wedge shape extrusion head, on base in the middle of column, be provided with work piece holder, on the outer wing base of work piece holder two, be horizontally installed with respectively symmetry and the inside hydraulic cylinder of push rod, at the upside of work piece holder, four blocks that mate with moulding Chinese lute hole workpiece outer rim radian are installed successively simultaneously.

Be provided with the slideway of level at described perpendicular row slider bottom, slideway has been embedded in cross sliding clock, the hydraulic cylinder that this horizontal slide is installed with work piece holder both sides level with cross sliding clock keeps vertical, a side at perpendicular row slide block is provided with transverse hydraulic cylinder, push rod and the cross sliding clock of this transverse hydraulic cylinder link together, on the bottom surface of this cross sliding clock, be fixed with successively slubbing wedge shape extrusion head He Er road wedge shape extrusion head, the cone angle of two wedge shape extrusion heads, meet 10 °≤α≤20 °, and the width m of two road wedge shape extrusion heads, the width n of slubbing wedge shape extrusion head, meeting certain ratio is between m:n=3:1~5:1.

Described each block can regulate on work piece holder.

Be provided with bar code and on perpendicular row slide block, corresponding code reader be installed in column one side, at perpendicular row slider bottom slideway one side setting bar code and corresponding code reader is installed on cross sliding clock.

The both sides of work piece holder are also provided with vertical discharging hydraulic cylinder.

Good effect of the present invention: forming method of the present invention is that the seamless steel pipe by selecting certain specification size does blank, then adopts hot rolling two spindle nose moulding, and---the centre side of pushing away (making pipe become square tube)------bulk heat treatmet---middle Chinese lute hole forming---the accurately machined technological process of axle housing shaping---(processing Chinese lute hole groove) welding set square---intercepts, slots.This technique process is relatively few, and Chinese lute bore region attenuation Chengdu is little in the middle of axle housing, and axle housing intensity is high, and disposable apparatus drops into little, and production efficiency is high, and the integral housing that the present invention produces has intensity, rigidity is high, product bearing capacity large, good looking appearance, operation are few.Machine tool structure of the present invention is simple, production efficiency is high, cost is low, mould can be realized standardization, and the expense of remodeling is low, the features such as energy-conserving and environment-protective.

brief description of the drawings:

Fig. 1 is machine tool structure schematic diagram of the present invention;

Fig. 2 is the left TV structure schematic diagram of Fig. 1;

Fig. 3 is the plan structure schematic diagram of workpiece and fixture in Fig. 1;

Fig. 4-Figure 11 is respectively the successively procedure of processing schematic diagram of forming method of the present invention;

Fig. 4-1-Fig. 8-1 is respectively the profile of Fig. 4-Fig. 8.

Number in the figure 1 is central seat, and 2 is two wing bases, and 3 is two heel posts, 4 is supporter, and 5 for compressing hydraulic cylinder, and 6 is fuel tank and oil pressure control system, 7 is transverse hydraulic oil cylinder, 8 Wei Er road wedge shape extrusion heads, 9 slubbing wedge shape extrusion heads, 10 is work piece holder, and 11 is machine operation work platform, and 12 is lathe foundation, 13 is slide block, 14 is slideway, and 15 is workpiece, and 16 is block.

detailed description of the invention:

Embodiment mono-: referring to Fig. 4-Figure 11, a kind of automobile drive axle housing Chinese lute hole cold-extrusion molding method, comprises the following steps:

1, material base operation in early stage:

(1), blanking: select the pipe (seamless steel pipe) of suitable diameter and gauge to be cut into the pipe that needs length, caliber and wall thickness are suitable with axle housing square-section place size, referring to Fig. 4 and Fig. 4-1(Fig. 4-1st, the A-A profile of Fig. 4);

(2), two ends spindle nose moulding: utilize axle housing milling train by pipe Frequency Induction Heating, first to central siphon one end roll forming, roll out the size of axle housing two ends drawing requirement, referring to Fig. 5 and Fig. 5-1(Fig. 5-1st, the B-B profile of Fig. 5).By after central siphon Rotate 180 degree to central siphon other end roll forming, roll out the size of axle housing two ends drawing requirement, referring to Fig. 6 and Fig. 6-1(Fig. 6-1st, the C-C profile of Fig. 6);

(3), the part side's of pushing away moulding in the middle of pipe: central siphon is put into the side's of pushing away machine and push the side of pushing away, make axle housing middle piece reach the square sectional dimension needing, referring to Fig. 7 and Fig. 7-1(Fig. 7-1st, the D-D profile of Fig. 7).

2, further manufacturing procedure:

(1), in the middle of pipe, open the elongated slot that front and back are passed through, referring to Fig. 8 and Fig. 8-1(Fig. 8-1st, the E-E profile of Fig. 8) open respectively an elongated slot in pipe bilateral symmetry position, rounding off is wanted at the two ends of groove, and the data that the width of groove, length, position are obtained according to repetition test and corresponding calculating are given; Calculate the elongated slot width, the length and location that need according to a certain model Chinese lute pore structure, elongated slot is carried out to following process to be formed behind Chinese lute hole, after contrast process, the deviation in Chinese lute hole and actual required Chinese lute hole is further adjusted elongated slot width, may need repeatedly repetition test to determine suitable elongated slot width, length, position.

(2), bulging is pushed in central siphon two spindle noses and middle Chinese lute hole simultaneously: two spindle noses are inwardly imposed respectively to 150T pressure, utilize respectively slubbing wedge shape extrusion head He Er road wedge shape extrusion head middle elongated slot portion to be imposed to the pressure of 315T, make progressively bulging of central siphon middle part, contact with middle Chinese lute hole forming mold cold extruding, laminating, bag pressure certain hour aftershaping; The wherein cone angle of two wedge shape extrusion heads, meets 10 °≤α≤20 °, and the width m of two road wedge shape extrusion heads, the width n of slubbing wedge shape extrusion head, and meeting certain ratio is between m:n=3:1~5:1;

3, subsequent handling:

(1), axle housing shaping: shaping is carried out in Chinese lute hole in the middle of axle housing and region, square-section corresponding to spring base (welding suspension member on axle assembly), reach the size of part requirement;

(2), in the middle of the axle housing Chinese lute hole finished edge, weldering set square in two ends, Chinese lute hole in the middle of axle housing.

Embodiment bis-: referring to Fig. 1, Fig. 2 and Fig. 3, automobile drive axle housing Chinese lute hole moulded section lathe comprises base, column, compresses guider, hydraulic cylinder and hydraulic system etc.Wherein base comprises central seat and 1 liang of wing base 2, central seat 1 is vertically fixed with column around, column upper end is fixed with the supporter 4 of level, the center of supporter 4 is vertically provided with compressed oil cylinder 5, on the lower piston bar of this compressed oil cylinder 5, be fixed with perpendicular row slide block 13, these perpendicular row slide block 13 both sides are sleeved on column.On two wing bases 2, be horizontally installed with respectively the inside hydraulic cylinder 3 of symmetry and push rod.Perpendicular row slide block 13 bottoms are provided with the slideway 14 of level, slideway 14 has been embedded in cross sliding clock, the hydraulic cylinder 3 that this horizontal slide is installed with work piece holder both sides level with cross sliding clock keeps vertical, a side at perpendicular row slide block 13 is provided with transverse hydraulic cylinder 7, push rod and the cross sliding clock of this transverse hydraulic cylinder 7 link together, and are fixed with successively slubbing wedge shape extrusion head 9 He Er road wedge shape extrusion heads 8 on the bottom surface of this cross sliding clock.The cone angle of two wedge shape extrusion heads, meets 10 °≤α≤20 °, and the width m of two road wedge shape extrusion heads 8, the width n of slubbing wedge shape extrusion head 9, and meeting certain ratio is between m:n=3:1~5:1.On center base 1, be provided with work piece holder 15, the upside of work piece holder 15 is provided with four blocks 16 that mate with moulding Chinese lute hole workpiece 15 outer rim radians successively.

Realize control automatically in order accurately to control the formation of each oil cylinder, be provided with bar code and on perpendicular row slide block, corresponding code reader be installed in column one side, at perpendicular row slider bottom slideway one side setting bar code and corresponding code reader is installed on cross sliding clock.

In the both sides of work piece holder, vertical discharging hydraulic cylinder is also installed.

Embodiment tri-: accompanying drawing is not drawn, content and embodiment bis-are basic identical, and something in common does not repeat, different: described each block can regulate on work piece holder.

Claims (4)

1. an automobile drive axle housing Chinese lute hole moulded section lathe, comprise base, column, compress guider, hydraulic cylinder and hydraulic system, it is characterized in that, the middle part of base is vertically fixed with column, column upper end is fixed with the supporter of level, supporter center is vertically provided with compressed oil cylinder, on the lower piston bar of this compressed oil cylinder, be fixed with perpendicular row slide block, these perpendicular row slide block both sides are sleeved on column, slider bottom center is provided with wedge shape extrusion head, on base in the middle of column, be provided with work piece holder, on the outer wing base of work piece holder two, be horizontally installed with respectively symmetry and the inside hydraulic cylinder of push rod, at the upside of work piece holder, four blocks that mate with moulding Chinese lute hole workpiece outer rim radian are installed successively simultaneously, be provided with the slideway of level at described perpendicular row slider bottom, slideway has been embedded in cross sliding clock, the hydraulic cylinder that this horizontal slide is installed with work piece holder both sides level with cross sliding clock keeps vertical, a side at perpendicular row slide block is provided with transverse hydraulic cylinder, push rod and the cross sliding clock of this transverse hydraulic cylinder link together, on the bottom surface of this cross sliding clock, be fixed with successively slubbing wedge shape extrusion head He Er road wedge shape extrusion head, the cone angle of two wedge shape extrusion heads, meet 10 °≤α≤20 °, and the width m of two road wedge shape extrusion heads, the width n of slubbing wedge shape extrusion head, meeting certain ratio is between m:n=3:1~5:1.
2. automobile drive axle housing Chinese lute hole moulded section lathe according to claim 1, is characterized in that, described each block can regulate on work piece holder.
3. automobile drive axle housing Chinese lute hole moulded section lathe according to claim 1, it is characterized in that, be provided with bar code and on perpendicular row slide block, corresponding code reader be installed in column one side, be provided with bar code and corresponding code reader is installed on cross sliding clock in perpendicular row slider bottom slideway one side.
4. automobile drive axle housing Chinese lute hole moulded section lathe according to claim 1, is characterized in that, the both sides of work piece holder are also provided with vertical discharging hydraulic cylinder.
CN201110363418.5A 2011-11-16 2011-11-16 Cold extrusion forming method for lute hole of axle housing of automobile drive axle and pressing die forming machine tool CN102581051B (en)

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* Cited by examiner, † Cited by third party
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CN102886467B (en) * 2012-09-24 2014-07-23 重庆科技学院 Hydraulic press for integral compound bulging of automotive driving axle
CN102886463B (en) * 2012-09-24 2014-11-05 重庆科技学院 Hydraulic press special for integral compound bulging of automatic driving axle
CN102886461B (en) * 2012-09-24 2014-11-26 重庆科技学院 Overall composite bulging production process for car drive axle
CN104476120B (en) * 2014-11-06 2017-02-01 柳州欧维姆机械股份有限公司 Forming technical method of square through plate with wedge-shaped through hole
CN105268817A (en) * 2015-12-01 2016-01-27 韩忠胜 Manufacturing technology for cold extruding steel seamless four-way pipe fitting
CN108213861B (en) * 2017-11-29 2020-05-19 闫永东 Automobile axle housing forming method
CN110076252A (en) * 2019-05-15 2019-08-02 华北科技学院 The manufacturing process of middle heavy wall integral automobile driving axle housing bridge arch
CN110802374A (en) * 2019-11-18 2020-02-18 吉林大学 Manufacturing method of variable cross-section automobile driving axle housing

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Publication number Priority date Publication date Assignee Title
US1958214A (en) * 1930-02-07 1934-05-08 Clark Equipment Co Means for forming the banjo and frame of a rear axle housing
US2150948A (en) * 1935-06-14 1939-03-21 Clark Equipment Co Axle housing and method of making the same
CN2143552Y (en) * 1991-12-31 1993-10-13 王显东 Shaping apparatus for producing integrate steel pipe automobile chassis
CN101185946A (en) * 2006-11-16 2008-05-28 梅利红 Roll type cold pressing processing method and device for vehicle driving axle housing
CN101204776A (en) * 2006-12-20 2008-06-25 中国第一汽车集团公司 Manufacturing method of car axle case
CN101524736A (en) * 2008-10-31 2009-09-09 青特集团有限公司 Machining method of bearing axle shell of automobile
CN202316740U (en) * 2011-11-16 2012-07-11 三门峡合鑫机床有限公司 Axle case lute hole stamping and forming machine tool for car drive axle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1958214A (en) * 1930-02-07 1934-05-08 Clark Equipment Co Means for forming the banjo and frame of a rear axle housing
US2150948A (en) * 1935-06-14 1939-03-21 Clark Equipment Co Axle housing and method of making the same
CN2143552Y (en) * 1991-12-31 1993-10-13 王显东 Shaping apparatus for producing integrate steel pipe automobile chassis
CN101185946A (en) * 2006-11-16 2008-05-28 梅利红 Roll type cold pressing processing method and device for vehicle driving axle housing
CN101204776A (en) * 2006-12-20 2008-06-25 中国第一汽车集团公司 Manufacturing method of car axle case
CN101524736A (en) * 2008-10-31 2009-09-09 青特集团有限公司 Machining method of bearing axle shell of automobile
CN202316740U (en) * 2011-11-16 2012-07-11 三门峡合鑫机床有限公司 Axle case lute hole stamping and forming machine tool for car drive axle

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