CN87203484U - Half-shaft sleeve of light-automobile rear axle and its lateral rolling machine - Google Patents

Abstract

The utility model discloses a half-shaft sleeve tube of light type automobile rear axle and the forming equipment-a special purpose three-roller cross-rolling mill. The divided half-shaft sleeve tube whose structure and shape are improved can get rid of traditional die forging technology and can be rolled and formed by the cross-rolling mill; with the advantages of simple structure, steady working, and good safety, the cross-rolling mill has a mold surface roller to form work pieces; as compared with the tyre die forging, the work efficiency is improved trebly, and the materials are saved 5.4 kg eachpiece.

Description

Half-shaft sleeve of light-automobile rear axle and its lateral rolling machine

The utility model relates to a kind of automotive parts and its Fabricating machinery, particularly lilliput car rear-axle tube and moulding cross rolling mill thereof.

The car rear axle semi-axis sleeve pipe is one of main components of automobile axle, and it is a reducing sleeve pipe that has flange, and its vertical section is the stepped appearance of uniform thickness not, at automobile axle position transfer torque.At present, the normally used rear-axle tube of light truck all is an integral structure, and promptly flange and sleeve portion are integrated.Since this structures shape its job operation all be to adopt contour forging technique.Look into regard to given data, Toyota Motor adopts hot extrusion technique, and this part of Mitsubishi Motors adopts hammer to go up die forging, and West Germany's hollow half axle also adopts the hot die forging moulding.The rear-axle tube of China's 130 automobiles is the method production of adopting loose tooling forging.This structure and corresponding process thereof, major defect is that stock utilization is low, only is about 40%, and a large amount of metals are cut, and production efficiency is low in addition, and labour intensity is big, and quality is also unstable, and processing safety is poor.In order to improve stock utilization, " the whole axle tube warm extrusion process of 130 automobiles " of Beijing Electromechanical Inst., Ministry of Machine-Building Industry and Beijing Internal-Combustion Engine General Factory's joint study, classify six or five national science and technology research projects as, numbering for the end of the year 84201212.85 identifies through country, stock utilization can bring up to 63%, and production time per piece descends.But it need be equipped with base with 900 tons of horizontal forging machine, 1000 tons, twice warm extrusion of 300 t hydraulic press, and 250 tons of presses are cut edge, equipment investment too high (about 3,000,000), operation is many, and die life is low, so be difficult to promote, does not up to the present also have producer to adopt.

Task of the present utility model provides a kind of lilliput car rear-axle tube of isolating construction, and the special-purpose cross rolling mill of processing lilliput car rear-axle tube, reaches small investment, and instant effect improves the purpose that work efficiency reduces material consumption again.

Task of the present utility model is finished as follows: the whole rear-axle tube of lilliput car is separated into flange and sleeve pipe two parts, and the shape of improvement sleeve pipe, under the condition that does not change fitted position, make outside face step drop even, to reduce shrinkage percentage, and change the arc surface of inside face reducing transition phase into circular conical surface, and make it be suitable for transverse rolling processing, two parts of separation are welded into axle tube integral body.

Design three roller cross rolling mills, it is made of support, body, electrical motor, roll-box, retarder, feed box, feed mechanism, unloading mechanism, material feeding mechanism and cooling and electric system.Principle of work is by main motor-driven drop-gear box, by three unitors connect three axles drive roll that in the roll-boxes three have a profile in the same way, revolution synchronously; By the leading screw moving linearly of feeding driven by motor feed box, the workpiece that the drive feed mechanism will be enclosed within on the mandrel is sent roll-box to.The outer mold surface of workpiece guarantees by the profile of three rolls, and gathers metal by the resistance of roll step, forms the sleeve pipe that vertical stepped appearance does not wait wall thickness, and the interior profile of workpiece is determined by the geometric configuration of mandrel.

Existing cross rolling mill has wedge shape punch roll or smooth roll, and the former is used for processing symmetrical shaft-like workpiece, and the latter makes the roll radial motion come execution cycle section axis of symmetry class rolled piece by the shape imitation hydraulic system.Compared with the prior art, the principal character of this cross rolling mill is: the relative position of three rolls, fixed distance, roll itself have can be determined the workpiece profile and gather the metallo-profile, does not need the shape imitation hydraulic system; Roll-box is split type, is made up of three layer box bodies; In addition: the pull bar of unloading mechanism links to each other with the sliding sleeve of feed mechanism, and two pull bars and sleeve be slidingly connected, and realizes the backhaul hysteresis servo-actuated of the relative feed mechanism of unloading mechanism; The leading screw of feed box is paid feed mechanism with sphere and is linked, and can eliminate the coaxiality error of leading screw.

The utility model adopts separation type welding axle tube, make the processing technology of the strength member on this lilliput car, might break away from die forging method, and adopt transverse rolling processing, the improvement of the inside and outside surface configuration of sleeve pipe has successfully solved the technical matters that occurs in the transverse rolling processing.Three included roller cross rolling mills of the utility model have the profile roll that can determine the workpiece profile, therefore do not need the shape imitation hydraulic device, and are simple in structure; Because it can use rolling finished product of tubing, save material, improve work efficiency; Owing to adopt split type roll-box, be convenient to maintenance, change part; A whole set of machine works is steady, and safety is good.

Below in conjunction with embodiment and accompanying drawing thereof the utility model is described further:

Fig. 1 is 130 automobiles separation type rear-axle tube constructionals drawing

Fig. 2 is a lilliput car rear-axle tube three-high mill constructional drawing

Fig. 3 is Fig. 2 partial enlarged drawing

Fig. 4 is the birds-eye view of Fig. 2

Fig. 5 is that the a-a of Fig. 4 analyses and observe

Fig. 6 is that the b-b of Fig. 4 analyses and observe

Fig. 7 is the roll-box structural representation

Fig. 8 is the left view of Fig. 7

Fig. 9 is roll-box and forward and back material mechanism map

Figure 10 is that the A of Fig. 9 is to view

Figure 11 is a feed box deployed configuration scheme drawing

Figure 12 is the material feeding structural scheme of mechanism

Figure 13 is that the c-c of Figure 12 analyses and observe

Figure 14 is a speed reduction gear box transmission scheme drawing

1:130 car rear axle semi-axis sleeve pipe is welded by sleeve pipe I and flange II two parts in conjunction with the accompanying drawings.The flange II is with common die forging or loose tooling forging processing, and the sleeve pipe I is formed through special-purpose cross rolling mill is rolling by tubing.In order to guarantee the quality of rolling and forming, under the condition that does not change fitted position, outside face has six layers of uniform step of diameter difference, and the transition phase of inside face reducing changes circular conical surface into by original arc surface.

In conjunction with the accompanying drawings 2,3,4,5,6: the sleeve pipe II of axle tube is processed by special-purpose three roller cross rolling mills, and this equipment comprises feed box 1, feed screw 2, body 3, feed mechanism 4, supporting base 5, backgauge frame 6, material feeding mechanism 7, roll-box 8, coupler 10, retarder 11, main motor 12, unloading mechanism 13, support 14, feeding motor 15, cylinder 16, cooling body 17.

Entire equipment is divided into two kinematic schemes: the one, main movement system: pass to drop-gear box 11 by main motor 12 through one group of cone belt, again three rolls that make roll-box 8 by three coupler 10 in the same way, revolution synchronously, promptly realize milling train master running; The 2nd, feeding with return movement system: give feed box 1 by feeding motor 15 through the cone belt transmission, the friction clutch of being handled by the cylinder 16 of solenoid control promotes leading screw feed mechanism 4, workpiece 9 is shifted onto in the roll-box 8, workpiece is rolling finish after, backhaul with feed mechanism 4, unloading mechanism 13 is retracted original position, and the workpiece that backgauge frame 6 will be enclosed within on the mandrel is left on the switching mechanism 7, thereby finishes work programme.

In conjunction with the accompanying drawings 14: drop-gear box 11 is gear reductions of a routine, by an imput shaft 1101, by two pairs of gear pairs, drive axle 1102, drive three gears 1104 simultaneously by the gear on the axle 1,102 1103, by coupler realize three roll mandrels simultaneously, in the same way, revolution synchronously.

In conjunction with the accompanying drawings 7～9: roll-box 8 is made up of upper box 815, middle casing 818, lower box 819, and loam cake 816 is arranged at upper box 815 tops, and lower box 819 has side cover 820, three layer box bodies to be separated from each other, and is with pin 817 location, fastening with thru-bolt 821, nut 822.Three roll mandrels 804 are installed in the triangularity position in the case, connect roll 806 with general flat key 805 on the every roll mandrel 804 with step profile, roll mandrel 804 two supports are on bearing 808,810, packing ring 809 is arranged between the two bearings, left side axle head has bearing gland 801, bearing cap shim 802, right axle head has seal ring 811.There are seal ring 803, pad 807 in roll 806 two ends.The re-entrant portion of casing fills cooling water expansion tank.

Drive drop-gear box 11 work by main motor 12 by belt pulley during work, by three coupler make in the roll-box three rolls 806 simultaneously, in the same way, revolution synchronously, rely on the outer mold surface of roll 806 that surface of the work is shaped, rely on mandrel that workpiece lumen is shaped.Bearing cooling in the roll-box 8 is achieved in that by flood valve 1701 and connects external water source, cooling water expansion tank is from cavity casing 818 through last cooling water pipe 1704 flows into of upper box 815, passing through down again, cooling water pipe 1705 flows into lower boxes 819 by middle casing 818, by outside the flowing water Valve 1703 discharge machines, the turnover water yield can be controlled by 1701 flood valves again.

Strip plate workpiece afterbody in the course of processing needs suitably cooling, so charging hole outer rim dress ring-shaped water jacket 1702 at roll-box 8, when in strip plate is pushed into roll-box 8, contacting roll 806, open the ring-shaped water jacket valve, cooling water expansion tank promptly from the tail end of the spout directive strip plate of water jacket 1702, is finished the cooling to strip plate.

In conjunction with the accompanying drawings 9: feed box 1 comprises casing 102, interior dress leading screw 2, B axle 106, A axle 116, C axle 125 and be installed in gear pair on each.Leading screw 2 left ends are supported on the nut 101, and right-hand member passes the feeding screw 127 that is contained on the casing 102.Connect feeding screw gear 104 at feeding screw 127 cylindricals with key 103.B axle 106 is contained on the ball bearing of main shaft of casing 102, the axle on be equipped with B shaft gear 107 and with screw gear 104 ingear dual gears 105.A axle 116 is installed in the bearing of supporting base 111 and 123, and A axle left gear 112, A axle right gear 115 are housed respectively on two pairs of bearings on the A axle 116.Between two gears the bi-directional friction power-transfer clutch is arranged, it comprises two groups of friction linings 113 and is contained in two groups of banking pin 114, slipper 124 between the friction lining.The centre hole of A axle 116 has brake rod 121 to pass through, and the right-hand member of brake rod 121 passes the sliding sleeve 122 in the supporting base 123, joins with the piston rod that connects crotch 118, bearing pin 119 and cylinder 16, and left end fixes with banking pin 114 and slipper 124.C axle 125 is contained on the bearing seat of casing 102, and C shaft gear 126 usefulness key connecting are on C axle 125, and it can mesh with I axle right gear 115, and the multiple tooth end with B axle dual gear 105 meshes simultaneously.

The principle of work of feed box 1 is, feeding motor 15 is through cone belt and belt pulley 110 transferring power, and through spline fitting 109 and fixed block 108 rotation passed to imput shaft-A axle 116.Left gear 112 and right gear 115 on the A axle 116 are contained on the A axle by bearing, so when the A axle rotated, they did not rotate.When needing the workpiece feeding, handle source of the gas 120, make the piston of cylinder 16 promote to connect crotch 118 left by solenoid directional control valve, sliding sleeve 122, promote brake rod 121, drive slipper 124 by banking pin 114 again, make friction lining 113 be close to A axle left gear 112, make its rotation, and, B axle 106 is rotated by meshing with B shaft gear 107, few increment of B axle dual gear 105 and 104 engagements of the feeding screw gear on the leading screw 2, drive feeding screw 127 and rotate, make leading screw 2 march forward to.Make the piston reverses direction motion of cylinder 16 when solenoid directional control valve, pulling slide block 122 through brake rod 121, banking pin 114, slipper 124, is close in A axle right gear 115 friction lining 113, make its rotation, and by with C shaft gear 126 engagement, make the rotation of C axle, C shaft gear 126 again with the multiple tooth end engagement of B axle combination gear 105, make 106 rotations of B axle, and few increment of B axle combination gear 105 and 104 engagements of screw gear, thereby make screw 127 revolutions, drive leading screw 2 and move to returning direction.

In conjunction with the accompanying drawings 9,10, the structure of feed mechanism 4 and unloading mechanism 13 is such: feed screw 2 heads Bolt Connection ball cap 401, and the sphere of ball cap 401 is assemblied in the slide block 403, forms sphere and pays connection, fixing with key 402, prevent that ball cap 401 from rotating.The other end of slide block 403 is supported push rod 404 with bearing, and push rod 404 middle part framves are on supporting base 5, and front end and mandrel 406 are used thread connection, and fixing with holding screw 405.When the workpiece feeding, leading screw 2 promotes ball caps 401, slide block 403,, makes mandrel 406 promote strip plates and enters roll-box 8 to front slide along the guide rail of body 3, advances positions by travel switch 407 control strip plates.

One end of the pull bar 1301 in the unloading mechanism 13 is fixed on the ledge portion of slide block 403, and the other end passes end cap 1302 and enters in the sleeve 1305 on the bearing 1303, and in the end one block is arranged.The same pull bar 1304 of another root is passed by the right-hand member of sleeve 1305, with the end of the pull rod shaft 1306,1306 that is threaded a material returned dish 1307 is installed.When workpiece is return, slide block 403 is with leading screw 2 backhauls pulling pull bar 1301, make 1301 in sleeve, slide (these routine 350mm) behind the segment distance left, the block of pull bar 1301 ends starts drag sleeve 1305 and slides left together, when sliding a segment distance (350mm) again, the block of the end of pull bar 1304 is subjected to affecting of sleeve 1305, with pull rod shaft 1306, material returned dish 1307 is together in company with sliding left, the bar of the material returned simultaneously 1308 promotes workpiece and returns (the about 200mm of this section stroke), workpiece is blocked by backgauge frame 6, fall in the material feeding mechanism 7, slide block 403 just in time walks back original position.

In conjunction with the accompanying drawings 12,13, upset material feeding mechanism 7 is installed in the below of push rod 404, and supporting plate 708 is across lathe bed, and cylinder 701, slide 709 are installed on the supporting plate 708, and tooth bar 710 links to each other with cylinder 701 piston rods, can move in slide 709.Gear 705 usefulness key connecting are on trip shaft 706, and the axle two ends are contained on the support 707, and turning rack 702 usefulness screws 704 are fixed on the trip shaft 706.

Working process is: during material loading, by artificial or machinery strip plate is delivered on the turning rack 702, by the push rod 404 of feed mechanism blank is pushed roll-box 8.Rolling finishing, by unloading mechanism 13 workpiece is retracted, fall on the turning rack 702, at this moment, the cylinder 701 pulling tooth bars 710 by solenoid directional control valve control make ring gear 705 rotations, driving trip shaft 706 rotates, turning rack 702 is to the upset of rolling frame 703 directions, and workpiece is fallen on the rolling frame 703, is taken away by artificial or machinery then.

The utility model has designed special-purpose cross rolling mill owing to changed product structure, makes efficiency Obviously improve, former loose tooling forging technology is totally two fiery five operations, needs direct labor 22 people, and underproduce 100 of class adopts cross rolling mill production only to need workman 5 people, and class's output reaches 300. And workpiece surface quality is good, but than 5.4 kilograms of every saving steels of loose tooling forging, stock utilization also reaches the level of " warm extrusion process ". 87 years our factories produce 48,000 of axle tubes, but 259 tons of saving steels, quite RMB is 38.5 ten thousand yuan, simultaneously more former technology capable of saving fuel oil, man-hour, and the rate of reducing the number of rejects and seconds, the annual total can be 85.5 ten thousand yuan of our factory's wound benefits. About 100,000 of 130 type automobiles are produced in the whole nation 87 per year, need 250,000 of axle tubes, estimate that its economic benefit is considerable. In addition, the utility model is easy to implement, and equipment investment only is 100,000 yuan, a thirtieth of suitable six or five brainstorm projects " warm extrusion process ", and the forming roll of this cross rolling mill can be changed, thereby enlarges the scope of application, is suitable for the unidirectional reducing workpiece of rolling various hollow or solid symmetry axis classes.

Claims (8)

1, a kind of lilliput car rear-axle tube, it comprises sleeve pipe I, flange II, it is characterized in that: flange II and sleeve pipe I are separation member, the flange II of forging is welded on the rolling sleeve pipe I, the stepped appearance ladder that wall thickness is not waited in sleeve pipe I elevation profile evenly, be at least six layers, the reducing transition portion of interior profile is a circular conical surface.

2, a kind of three roller cross rolling mills of production separation type axle tube, it comprises support, body, main motor, feeding motor, drop-gear box, roll-box, feed box, feed mechanism, unloading mechanism, material feeding mechanism and cooling system, electric system, it is characterized in that:

The roll 806 that 1. three positions, fixed distance are arranged in the roll-box 8, and roll 806 itself has the step profile that can determine the workpiece profile;

2. the casing of roll-box 8 is divided between upper box 815, middle casing 818, lower box 819, three layer box bodies with pin 817 location, and is fastening with thru-bolt 821, nut 822.

3, three roller cross rolling mills according to claim 2, it is characterized in that: also have cooling system on the said roll-box 8, it comprises the flood valve 1701 of cooling bearing, the last cooling water pipe 1704 of casing 818 from upper box 815 leads to, therefrom casing 818 leads to the following cooling water pipe 1705 and the flowing water Valve 1703 of lower box 819; Also comprise the ring-shaped water jacket 1702 that cools off strip plate, it is contained in casing inlet point outer rim, and spout and flood valve are arranged on the water jacket.

4, three roller cross rolling mills according to claim 2, it is characterized in that: said unloading mechanism 13, its pull bar 1,301 one ends are fixed on the feed mechanism 4, the other end is contained in the sleeve 1305,1304 on pull bar is passed with pull rod shaft 1306 by the sleeve other end and is connected, and pull bar 1301 and 1304 can slide in sleeve 1305.

5, three roller cross rolling mills according to claim 2 is characterized in that: slide block in said feed screw 2 and the feed mechanism 4 403 is paid with sphere and is connected.

6, according to claim 2 or 5 described three roller cross rolling mills, it is characterized in that: said leading screw 2 is paid to connect with the sphere of feed mechanism 4 and is meant leading screw 2 heads Bolt Connection ball cap 401, and the sphere of ball cap 401 is contained in the slide block 403, and fixing with key 402.

7, three roller cross rolling mills according to claim 2, it is characterized in that: said feed box 1, friction clutch is wherein controlled by brake rod 121, banking pin 114, slipper 124 by cylinder 16, and cylinder 16 is handled by the source of the gas of solenoid control.

8, three roller cross rolling mills according to claim 2, it is characterized in that: said material feeding mechanism is mounted in the convertible material feeding mechanism 7 of feed mechanism below, supporting plate 708 is across on lathe bed, cylinder 701 and slide 709 are installed on the supporting plate 708, tooth bar 710 links with the piston of cylinder 701, can move in slide 709, and gear 705 usefulness key connecting are on trip shaft 706, the axle two ends are contained on the support 707, and turning rack 702 usefulness screws 704 are fixed on the trip shaft 706.

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