CN102581051A - 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 PDFInfo
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- CN102581051A CN102581051A CN2011103634185A CN201110363418A CN102581051A CN 102581051 A CN102581051 A CN 102581051A CN 2011103634185 A CN2011103634185 A CN 2011103634185A CN 201110363418 A CN201110363418 A CN 201110363418A CN 102581051 A CN102581051 A CN 102581051A
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- chinese lute
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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
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 production at present mainly contains four kinds of technologies, and the one, adopt casting technique, its production cost is lower, but intensity difference, profile is coarse, percent defective is high, and the production environment pollution is big, can not weld defectives such as auxiliary stand.The 2nd, adopt punch forming to add the technology of welding; Be welded by two parts or three part stamping parts, promptly go out the two halves axle housing respectively, the two halves axle housing is welded into an integral housing (does not contain the set square part like half shell; Also need weld set square); This press welding axle housing technique process is many, cost is higher, intensity is lower, and along with developing of automobile industry, press welding axle housing is used for the production of axle housing in a large number.Light-duty Vehicle, in-between car even all large-scale employing of heavy goods vehicles at present.But the shortcoming of dashing the weldering axle housing in use also comes out gradually, and the axle housing distortion that the commissure stress causes is difficult for proofreading and correct, and problems such as flexural deformation, intensity difference, leakage of oil often appear in fracture or cracking in the commissure on heavy motor truck easily.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, the side of contracting, slot, rive, 12 procedures such as curved surface, heating in medium frequency, the port that contracts, soldering set square are accomplished in the middle of the hole enlargement, shaping, pressing.This method operation is more, and cost is high.Owing to adopt the hole technology that rises, the attenuation of part intermediate axle packet portion thickness reduces this field strength and rigidity in addition, and intensity and rigidity in order to guarantee axle housing will increase pipe thickness, increase the weight and the cost of axle housing.The 4th, adopt square tube, technology is rived, expanded to middle fluting.This technology is simple relatively, but the square tube blank is high than the 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, also obtained fast development to quick cold stamping (extruding) forming technique of automobile axle housing class part.But because of this technology early investment big; It is strict that mould is made processing request, also will pass through accurate pressure designing and calculating, repetition test and the data verification production of could finalizing the design, therefore; Still be in the test advanced development at home; High volume applications in auto parts and components manufacturing firm also seldom, most producers still adopt traditional cast steel technology or piecemeal splicing welding procedure, and the technology that only adopts hot pressing or Chinese lute hole, cold moudling axle housing middle part is also arranged.But Chinese lute hole cold extruding formation process method is mostly under test at home at present in the middle of the automobile integral housing.
Summary of the invention:
The present invention proposes a kind of automobile drive axle housing Chinese lute hole cold-extrusion molding method and moulded section lathe to the problem and shortage that at present existing several kinds of technologies exist.
The technical scheme that the present invention adopted: a kind of automobile drive axle housing Chinese lute hole cold-extrusion molding method may further comprise the 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 place, axle housing square-section size;
(2), two ends spindle nose moulding: utilize the axle housing milling train with the 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 the pipe: central siphon is put into the side's of pushing away machine push the side of pushing away, make the cubic type sectional dimension that the axle housing stage casing reaches to be needed;
2, further (mainly) manufacturing procedure:
(1), open the elongated slot that front and back are passed through in the middle of the pipe, rounding off is wanted at the two ends of groove, and the width of groove, length, position are given according to the data that repetition test and corresponding calculating obtain;
(2), bulging is pushed in central siphon two spindle noses and middle Chinese lute hole simultaneously: two spindle noses are inwardly imposed 140-160T pressure respectively; Utilize slubbing wedge shape extrusion head and two road wedge shape extrusion heads middle elongated slot portion to be imposed the pressure of 300-330T respectively; Make progressively bulging of central siphon middle part, contact, fit, wrap pressure certain hour aftershaping with middle Chinese lute hole forming mold cold extruding; The cone angle of two wedge shape extrusion heads wherein satisfies 10 °≤α≤20 °, and the width m of two road wedge shape extrusion heads, the width n of slubbing wedge shape extrusion head, and satisfying 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 the axle housing and the corresponding zone, square-section of spring base (welding suspension member on the axle assembly), reached 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 the axle housing.
In the above-mentioned steps 2 (2), impose 150T pressure respectively 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 comprises base, column; Compress guider, hydraulic cylinder and hydraulic system, the middle part of base is vertically fixed with column; The column upper end is fixed with the supporter of level; The supporter central vertical is fixed with perpendicular row slide block to compressed oil cylinder is installed on the lower piston bar of this compressed oil cylinder, these perpendicular row slide block both sides are sleeved on the column; The slider bottom center is equipped with the wedge shape extrusion head; Base in the middle of the column is provided with work piece holder, outside work piece holder two, is horizontally installed with symmetry and the inside hydraulic cylinder of push rod on the wing base respectively, and the upside at work piece holder is equipped with four blocks that mate with moulding Chinese lute hole workpiece outer rim radian successively simultaneously.
Be provided with the slideway of level at said perpendicular capable slider bottom, slideway has been embedded in cross sliding clock, and the hydraulic cylinder that this horizontal slideway and cross sliding clock and work piece holder both sides level are installed keeps vertical; Side at perpendicular row slide block is equipped with the transverse hydraulic cylinder; The push rod and the cross sliding clock of this transverse hydraulic cylinder link together, and are fixed with slubbing wedge shape extrusion head and two road wedge shape extrusion heads on the bottom surface of this cross sliding clock successively, the cone angle of two wedge shape extrusion heads; Satisfied 10 °≤α≤20 °; And the width m of two road wedge shape extrusion heads, the width n of slubbing wedge shape extrusion head, satisfying certain ratio is between m:n=3:1~5:1.
Said each block can be regulated on work piece holder.
Be provided with bar code and on perpendicular row slide block, corresponding code reader be installed in column one side, erecting 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 also are equipped with vertical discharging hydraulic cylinder.
---the side of pushing away, centre (making pipe become square tube)---intercepting, fluting---bulk heat treatmet---middle Chinese lute hole forming---accurately machined technological process of axle housing shaping---(processing Chinese lute hole groove) welding set square---that good effect of the present invention: forming method of the present invention is to do blank through the seamless steel pipe of selecting the certain specification size for use, adopts the two spindle nose moulding of hot rolling system then.This technique process is few relatively, and Chinese lute bore region attenuation Chengdu is little in the middle of the 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, the product bearing capacity is big, 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, characteristics such as energy-conserving and environment-protective.
Description of drawings:
Fig. 1 is a machine tool structure sketch map of the present invention;
Fig. 2 is the left TV structure sketch map of Fig. 1;
Fig. 3 is the plan structure sketch map of workpiece and anchor clamps among Fig. 1;
Fig. 4-Figure 11 is respectively the sketch map of procedure of processing one by one of forming method of the present invention;
Fig. 4-1-Fig. 8-1 is respectively the profile of Fig. 4-Fig. 8.
The specific embodiment:
Embodiment one: referring to Fig. 4-Figure 11, a kind of automobile drive axle housing Chinese lute hole cold-extrusion molding method may further comprise the 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 place, axle housing square-section size, referring to Fig. 4 and Fig. 4-1 (Fig. 4-the 1st, the A-A profile of Fig. 4);
(2), two ends spindle nose moulding: utilize the axle housing milling train with the pipe Frequency Induction Heating,, roll out the size of axle housing two ends drawing requirement, referring to Fig. 5 and Fig. 5-1 (Fig. 5-the 1st, the B-B profile of Fig. 5) earlier to central siphon one end roll forming.To central siphon other end roll forming, roll out the size of axle housing two ends drawing requirement, after with central siphon Rotate 180 degree referring to Fig. 6 and Fig. 6-1 (Fig. 6-the 1st, the C-C profile of Fig. 6);
(3), the part side's of pushing away moulding in the middle of the pipe: central siphon is put into the side's of pushing away machine push the side of pushing away, make the cubic type sectional dimension that the axle housing stage casing reaches to be needed, referring to Fig. 7 and Fig. 7-1 (Fig. 7-the 1st, the D-D profile of Fig. 7).
2, further manufacturing procedure:
(1), opens the elongated slot that front and back are passed through in the middle of the pipe; Open an elongated slot referring to Fig. 8 and Fig. 8-1 (Fig. 8-the 1st, the E-E profile of Fig. 8) respectively in pipe bilateral symmetry position; Rounding off is wanted at the two ends of groove, and the width of groove, length, position are given according to the data that repetition test and corresponding calculating obtain; Elongated slot width, length and the position of calculating needs according to a certain model Chinese lute pore structure; Elongated slot is carried out after following process forms the Chinese lute hole; The deviation in contrast processing Chinese lute hole, back and actual required Chinese lute hole is further adjusted the elongated slot width, possibly need repeatedly repetition test to confirm 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 150T pressure respectively; Utilize slubbing wedge shape extrusion head and two road wedge shape extrusion heads middle elongated slot portion to be imposed the pressure of 315T respectively; Make progressively bulging of central siphon middle part, contact, fit, wrap pressure certain hour aftershaping with middle Chinese lute hole forming mold cold extruding; The cone angle of two wedge shape extrusion heads wherein satisfies 10 °≤α≤20 °, and the width m of two road wedge shape extrusion heads, the width n of slubbing wedge shape extrusion head, and satisfying 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 the axle housing and the corresponding zone, square-section of spring base (welding suspension member on the axle assembly), reached 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 the axle housing.
Embodiment two: referring to Fig. 1, Fig. 2 and Fig. 3, automobile drive axle housing Chinese lute hole moulded section lathe comprises base, and column compresses guider, hydraulic cylinder and hydraulic system etc.Wherein base comprises central seat and 1 liang of wing base 2; Be vertically fixed with column around the central seat 1; The column upper end is fixed with the supporter 4 of level; The central vertical of supporter 4 is fixed with perpendicular row slide block 13 to compressed oil cylinder 5 is installed on the lower piston bar of this compressed oil cylinder 5, these perpendicular row slide block 13 both sides are sleeved on the column.Be horizontally installed with the inside hydraulic cylinder 3 of symmetry and push rod on two wing bases 2 respectively.Perpendicular row slide block 13 bottoms are provided with the slideway 14 of level; Slideway 14 has been embedded in cross sliding clock; This horizontal slideway keeps vertical with the hydraulic cylinder 3 that cross sliding clock and work piece holder both sides level are installed; Side at perpendicular row slide block 13 is equipped with transverse hydraulic cylinder 7, and the push rod and the cross sliding clock of this transverse hydraulic cylinder 7 link together, and are fixed with slubbing wedge shape extrusion head 9 and two road wedge shape extrusion heads 8 on the bottom surface of this cross sliding clock successively.The cone angle of two wedge shape extrusion heads, satisfied 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, satisfying certain ratio is between m:n=3:1~5:1.Center base 1 is provided with work piece holder 15, and the upside of work piece holder 15 is equipped with four blocks 16 with moulding Chinese lute hole workpiece 15 outer rim radians coupling successively.
For the accurately formation realization control automatically of each oil cylinder of control; Be provided with bar code and on perpendicular row slide block, corresponding code reader be installed in column one side, erecting 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 installed also.
Embodiment three: accompanying drawing is not drawn, and content and embodiment two are basic identical, and something in common does not repeat, and different is: said each block can be regulated on work piece holder.
Claims (7)
1. an automobile drive axle housing Chinese lute hole cold-extrusion molding method is characterized in that being, may further comprise the steps:
One, 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 place, axle housing square-section size;
(2), two ends spindle nose moulding: utilize the axle housing milling train with the 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 the pipe: central siphon is put into the side's of pushing away machine push the side of pushing away, make the cubic type sectional dimension that the axle housing stage casing reaches to be needed;
Two, further manufacturing procedure:
(1), open the elongated slot that front and back are passed through in the middle of the pipe, rounding off is wanted at the two ends of groove, and the width of groove, length, position are given according to the data that repetition test and corresponding calculating obtain;
(2), bulging is pushed in central siphon two spindle noses and middle Chinese lute hole simultaneously: two spindle noses are inwardly imposed 140-160T pressure respectively; Utilize slubbing wedge shape extrusion head and two road wedge shape extrusion heads middle elongated slot portion to be imposed the pressure of 300-330T respectively; Make progressively bulging of central siphon middle part, contact, fit, wrap pressure certain hour aftershaping with middle Chinese lute hole forming mold cold extruding; The cone angle of two wedge shape extrusion heads wherein satisfies 10 °≤α≤20 °, and the width m of two road wedge shape extrusion heads, the width n of slubbing wedge shape extrusion head, and satisfying certain ratio is between m:n=3:1~5:1;
Three,Subsequent handling:
(1), axle housing shaping: shaping is carried out in Chinese lute hole in the middle of the axle housing and the corresponding zone, square-section of spring base, reached 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 the axle housing.
2. automobile drive axle housing Chinese lute according to claim 1 hole cold-extrusion molding method is characterized in that being, in the above-mentioned steps 2 (2), imposes 150T pressure respectively at two spindle noses, and middle elongated slot portion imposes the pressure of 315T.
3. an automobile drive axle housing Chinese lute hole moulded section lathe comprises base, column; Compress guider, hydraulic cylinder and hydraulic system is characterized in that; The middle part of base is vertically fixed with column, and the column upper end is fixed with the supporter of level, and the supporter central vertical is to compressed oil cylinder is installed; Be fixed with perpendicular row slide block on the lower piston bar of this compressed oil cylinder; Should be sleeved on the column perpendicular row slide block both sides, the slider bottom center is equipped with the wedge shape extrusion head, and the base in the middle of the column is provided with work piece holder; Outside work piece holder two, be horizontally installed with symmetry and the inside hydraulic cylinder of push rod on the wing base respectively, the upside at work piece holder is equipped with four blocks that mate with moulding Chinese lute hole workpiece outer rim radian successively simultaneously.
4. automobile drive axle housing Chinese lute hole moulded section lathe according to claim 3 is characterized in that, is provided with the slideway of level at said perpendicular capable slider bottom; Slideway has been embedded in cross sliding clock; This horizontal slideway keeps vertical with the hydraulic cylinder of cross sliding clock and the installation of work piece holder both sides level, in a perpendicular side of going slide block the transverse hydraulic cylinder is installed, and the push rod and the cross sliding clock of this transverse hydraulic cylinder link together; Be fixed with slubbing wedge shape extrusion head and two road wedge shape extrusion heads on the bottom surface of this cross sliding clock successively; The cone angle of two wedge shape extrusion heads, satisfied 10 °≤α≤20 °, and the width m of two road wedge shape extrusion heads; The width n of slubbing wedge shape extrusion head, satisfying certain ratio is between m:n=3:1~5:1.
5. automobile drive axle housing Chinese lute hole moulded section lathe according to claim 3 is characterized in that said each block can be regulated on work piece holder.
6. automobile drive axle housing Chinese lute hole moulded section lathe according to claim 3; 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, erecting row slider bottom slideway one side setting bar code and corresponding code reader is installed on cross sliding clock.
7. automobile drive axle housing Chinese lute hole moulded section lathe according to claim 3 is characterized in that the both sides of work piece holder also are equipped with vertical discharging hydraulic cylinder.
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CN102886463A (en) * | 2012-09-24 | 2013-01-23 | 重庆科技学院 | Hydraulic press special for integral compound bulging of automatic driving axle |
CN102886467A (en) * | 2012-09-24 | 2013-01-23 | 重庆科技学院 | Hydraulic press for integral compound bulging of automotive driving axle |
CN102886461A (en) * | 2012-09-24 | 2013-01-23 | 重庆科技学院 | Overall composite bulging production process for car drive axle |
CN104476120A (en) * | 2014-11-06 | 2015-04-01 | 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 |
CN107009147A (en) * | 2017-05-15 | 2017-08-04 | 江苏福坛车桥科技有限公司 | A kind of Drive axle housing is integrally formed equipment |
CN108213861A (en) * | 2017-11-29 | 2018-06-29 | 闫永东 | A kind of automobile axle housing forming method |
CN110038969A (en) * | 2019-05-15 | 2019-07-23 | 华北科技学院 | The former of middle heavy wall integral automobile driving axle housing bridge arch |
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 |
CN112157173A (en) * | 2020-09-22 | 2021-01-01 | 合肥明辉汽车零部件制造有限公司 | Automatic production line for axle housing thermal forming process |
CN112643301A (en) * | 2020-12-03 | 2021-04-13 | 河南凤宝重工科技有限公司 | Driving axle housing blank and manufacturing method thereof |
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CN102886463A (en) * | 2012-09-24 | 2013-01-23 | 重庆科技学院 | Hydraulic press special for integral compound bulging of automatic driving axle |
CN102886467A (en) * | 2012-09-24 | 2013-01-23 | 重庆科技学院 | Hydraulic press for integral compound bulging of automotive driving axle |
CN102886461A (en) * | 2012-09-24 | 2013-01-23 | 重庆科技学院 | Overall composite bulging production process for car drive axle |
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 |
CN104476120A (en) * | 2014-11-06 | 2015-04-01 | 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 |
CN107009147A (en) * | 2017-05-15 | 2017-08-04 | 江苏福坛车桥科技有限公司 | A kind of Drive axle housing is integrally formed equipment |
CN108213861A (en) * | 2017-11-29 | 2018-06-29 | 闫永东 | A kind of automobile axle housing forming method |
CN108213861B (en) * | 2017-11-29 | 2020-05-19 | 闫永东 | Automobile axle housing forming method |
CN110038969A (en) * | 2019-05-15 | 2019-07-23 | 华北科技学院 | The former of middle heavy wall integral automobile driving axle housing bridge arch |
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 |
CN110802374B (en) * | 2019-11-18 | 2022-01-21 | 吉林大学 | Manufacturing method of variable cross-section automobile driving axle housing |
CN112157173A (en) * | 2020-09-22 | 2021-01-01 | 合肥明辉汽车零部件制造有限公司 | Automatic production line for axle housing thermal forming process |
CN112643301A (en) * | 2020-12-03 | 2021-04-13 | 河南凤宝重工科技有限公司 | Driving axle housing blank and manufacturing method thereof |
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