Steering gear assembly gap adjustment machine and adjustment method

Abstract

The present application relates to a kind of steering gear assembly gap adjustment machine and assembly adjustment method, belong to automobile steering gear assembly technical field.The machine table includes workbench, the workbench table top is provided with press-fitting mechanism, grease mechanism, transfer mechanism, clamping fixture and torque wrench.The machine table can automatically grease and carry out press-fitting, can effectively shorten rhythm, reduce labor intensity and labor cost;Since through mechanical greasing, it can be standardized to support seat greasing;By monitoring pressure displacement curve, it can effectively improve assembly quality;When clamping, it can automatically adapt to the surface of steering gear housing, can effectively increase the contact area with steering gear housing and its additional, reduce the pressure on steering gear housing, so as to effectively improve the clamping force of steering gear in the case of ensuring that steering gear housing is not deformed, can effectively improve clamping stability.The problem of low production efficiency of existing assembly mode is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of steering gear assembly gap adjustment machine platform and assembly adjustment method, belong to automobile steering gear assembly technical field. BACKGROUND

[0002] Steering gear assembly includes shell, input shaft, rack, wherein to ensure that rack and gear shaft is always engaged, the gap of rack and gear shaft is adjusted by support seat, and rack is extruded on gear shaft.Patent application with publication number CN101791993A discloses a kind of gear rack type steering gear engagement gap adjustment mechanism, it is installed on the steering gear housing, when assembling, by being set in the steering gear housing Adjustment hole is stretched into the rack side, in order to adjust the position of rack, to complete gear rack engagement gap adjustment, the mechanism includes the support seat close to the rack, one side of the support seat is consistent with the rack, wherein spring mounting hole is provided, the spring mounting hole is towards the other side, the spring mounting hole is provided with compression spring, the cover plate is provided outside the adjustment hole, the cover plate is fixed on the steering gear housing and is pressed to the compression spring and covers the adjustment hole, adjustment washer is provided between the cover plate and the compression spring.New adjustment mechanism is more compact than original, the length of adjustment hole is greatly reduced, improves the assembly of whole vehicle, reduces weight and cost.

[0003] The existing steering gear is based on the above-mentioned adjustment mechanism, the compression force of the compression spring is adjusted by adjusting the depth of the adjusting screw plug, and then the extrusion force on the rack is adjusted, so as to adjust the engagement gap of the rack, so as to obtain the engagement gap meeting the standard range and the satisfactory steering feeling.The existing steering gear gap adjustment mechanism needs to use nylon auxiliary tool to manually push the support seat into the horizontal hole of the shell after assembling the gear rack in the assembly process, and then is transferred to the subsequent process by the conveying belt, the steering gear with the support seat is sequentially loaded with spring, adjusting screw plug, locking nut, and then the engagement gap is adjusted, and the locking nut is tightened after the engagement gap adjustment is qualified.

[0004] Under the condition of meeting the production line rhythm, the existing assembly method needs to be completed by two processes (positions) by two people, which has two deficiencies:1. Manual installation of support seat process, which is easy to cause O-ring on the support seat to be cut, cut off and the amount of grease on the support seat to be non-standard, which affects the performance of the steering gear assembly;2. Two operators (operation processes) are needed to complete, and the product is clamped and transferred several times, which restricts the output efficiency. SUMMARY

[0005] The present application aims at providing a steering gear assembly gap adjustment machine and an assembly adjustment method for improving production efficiency, reducing labor cost and improving quality level of assembly process.

[0006] The technical scheme of the present application is:

[0007] The steering gear assembly gap adjustment machine is composed of a workbench, a pressing assembly mechanism, a grease applying mechanism, a transfer mechanism, a clamping fixing device and a torque wrench, characterized in that the workbench is provided with the pressing assembly mechanism at the end of one end of the workbench, the grease applying mechanism is provided at the end of the other end of the workbench, and the transfer mechanism is provided at the end of the other end of the workbench; the clamping fixing device is provided at the side of the workbench beside the pressing assembly mechanism, and the torque wrench is provided at the side of the workbench outside the clamping fixing device.

[0008] The pressing assembly mechanism is composed of a positioning seat, a support plate, a quick clamp, a pressing electric cylinder and a pressing head, three support plates are provided in a triangular shape on the positioning seat to support and position the two ends of the steering gear housing and the input shaft, and a positioning groove is provided at the top of the support plate; the quick clamp is provided between the support plates and connected with the positioning seat through an assembly plate; the pressing electric cylinder is provided above the quick clamp, and the piston rod end of the pressing electric cylinder is provided with the pressing head; and the positioning seat is fixedly connected with the workbench through fixing bolts.

[0009] The grease applying mechanism is composed of a mounting seat, a grease applying motor, a rotary table, a spray gun, a grease storage barrel and a delivery pump, the grease applying motor is fixed on the mounting seat, the rotary table is provided on the output shaft of the grease applying motor, and the spray gun is provided above the rotary table; the grease storage barrel is provided beside the workbench, the delivery pump is provided on the grease storage barrel, and the delivery pump is communicated with the spray gun through a communication pipe; and the mounting seat is fixedly connected with the workbench through fixing bolts.

[0010] The transfer mechanism is composed of an L-shaped mounting plate, a lifting cylinder, a rotating cylinder, a turnover cylinder, a clamping jaw cylinder and a clamping jaw, the lifting cylinder is fixed on the mounting plate, the rotating cylinder is provided at the piston rod end of the lifting cylinder, the turnover cylinder is installed on the rotating shaft of the rotating cylinder through a rotating arm, and the clamping jaw is installed on the rotating shaft of the turnover cylinder through the clamping jaw cylinder; and the mounting plate is fixedly connected with the workbench through fixing bolts.

[0011] The clamping and fixing device is composed of a base, a fixed plate, a clamping cylinder, a positioning plate and a sliding plate, one end of the base is provided with the clamping cylinder through the fixed plate, the other end of the base is fixed with the positioning plate, the sliding rod is arranged between the positioning plate and the fixed plate, the sliding plate is movably installed on the sliding rod, and the sliding plate is fixedly connected with the piston rod end of the clamping cylinder; the end faces of the positioning plate and the sliding plate are respectively provided with self-adapting clamping assemblies, and the base between the positioning plate and the sliding plate is symmetrically provided with supporting assemblies; and the base is fixedly connected with the workbench through fixed bolts.

[0012] The self-adapting clamping assembly comprises a large clamping block, a middle clamping block and a small clamping block, the middle clamping block is symmetrically installed on the large clamping block, and the small clamping block is symmetrically installed on the middle clamping block; the large clamping block and the middle clamping block are in a semicylindrical shape, and the small clamping block is in a cylindrical shape; the edges of the two end heads of the circumferential surface of the large clamping block and the middle clamping block and the two end faces of the small clamping block are respectively provided with arc-shaped rotating flanges; the middle part of the small clamping block opposite to the rotating flange is provided with a V-shaped clamping groove; the two end heads of the large clamping block and the middle clamping block, the positioning plate above the sliding rod and the end faces of the sliding plate are respectively provided with positioning grooves in a semicircular cross section, and the two end heads of the positioning grooves are respectively provided with rotating sliding grooves in sliding connection with the rotating flanges.

[0013] The supporting assembly comprises a supporting seat, a supporting rod, an assembly seat and a locking claw, the supporting seat is in a "n" shape in cross section, the supporting rod is movably installed on the supporting seat through a pin shaft, the assembly seat is movably sleeved on the top end of the supporting rod, the top end face of the assembly seat is provided with an assembly groove, and the locking claw is symmetrically installed in the assembly groove through a pin shaft; and the supporting seat is fixedly connected with the base through fixed bolts.

[0014] The top end of the supporting rod is provided with a limiting sliding groove, and the assembly seat is provided with a limiting pin, and the end of the limiting pin is in sliding connection with the limiting sliding groove.

[0015] The supporting rod between the supporting seat and the assembly seat is sleeved with a supporting ring, and the supporting rod between the supporting ring and the assembly seat is sleeved with a reset spring.

[0016] The supporting seat below the supporting ring is in an "∧" shape.

[0017] The supporting seat below the supporting rod is provided with a limiting groove, the bottom end of the supporting rod is provided with a limiting rod, and the bottom end of the limiting rod extends into the limiting groove and is in abutting connection with the inner wall of the limiting groove.

[0018] The top of the clamping cylinder is provided with a part pre-dispensing disc, and the part pre-dispensing disc is fixedly connected with the workbench through a support.

[0019] The beneficial effects of the present application are as follows:

[0020] The steering gear assembly gap adjusting machine table can automatically coat grease on the support seat of the steering gear through the grease coating mechanism and automatically transfer the support seat after coating grease to the pressing mechanism to press it, since the coating and pressing are automatically completed on one worktable station without circulation in different stations, the cycle time can be effectively shortened, the labor intensity and labor cost can be reduced, since the support seat is coated by the mechanical coating, the support seat coating can be standardized (quantitative and automatic), the support seat assembly process is automatically completed, the pressure displacement curve is used for monitoring the pressing quality (the O-shaped ring is cut and the cut can be identified and judged), the assembly quality can be effectively improved, the production efficiency is improved, the labor intensity is reduced and the labor cost is reduced. The rotation of the large clamping block, the middle clamping block and the small clamping block can automatically adapt to the surface of the steering gear shell, the contact area with the steering gear shell and the additional material can be effectively increased, the pressure on the steering gear shell is reduced, the clamping force on the steering gear shell can be effectively improved under the condition that the steering gear shell is not deformed, the clamping stability can be effectively improved. Since the steering gear shell surface is automatically adapted by rotation, the structure and size do not need to be adjusted to adapt to different models of steering gears, the universality and universality can be effectively improved. The problem of low production efficiency of the existing assembly mode is solved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of the present application;

[0022] Figure 2 is a top view schematic diagram of the present application;

[0023] Figure 3 is a structural schematic diagram of the pressing mechanism of the present application;

[0024] Figure 4 is a structural schematic diagram of the grease coating mechanism of the present application;

[0025] Figure 5 is a structural schematic diagram of the transfer mechanism of the present application;

[0026] Figure 6 is a structural schematic diagram of the clamping and fixing device of the present application;

[0027] Figure 7 is a top view schematic diagram of the clamping and fixing device of the present application;

[0028] Figure 8 is Figure 7 is a structural schematic diagram of the large clamping block of the present application;

[0029] Figure 9 is a structural schematic diagram of the middle clamping block of the present application;

[0030] Figure 10 is a structural schematic diagram of the middle clamping block of the present application;

[0031] Figure 11 is a structural schematic diagram of the small clamping block of the present application;

[0032] Figure 12 is a structural schematic diagram of the slide plate of the present application;

[0033] Figure 13 is a structural schematic diagram of the support assembly of the present application;

[0034] Figure 14 is a sectional schematic diagram of the support assembly of the present application;

[0035] Figure 15 is a structural schematic diagram of the support rod of the present application;

[0036] Figure 16 is a top view schematic diagram of the support seat of the present application.

[0037] In the figure: 1, workbench, 2, torque wrench, 3, positioning seat, 4, support plate, 5, quick clamp, 6, press-fit electric cylinder, 7, pressure head, 8, positioning groove, 9, assembly plate, 10, mounting seat, 11, grease coating motor, 12, rotary table, 13, spray gun, 14, grease storage barrel, 15, delivery pump, 16, mounting plate, 17, lifting cylinder, 18, rotary cylinder, 19, overturning cylinder, 20, clamping jaw cylinder, 21, clamping jaw, 22, rotating arm, 23, base, 24, fixed plate, 25, clamping cylinder, 26, positioning plate, 27, slide plate, 28, slide rod, 29, large clamping block, 30, middle clamping block, 31, small clamping block, 32, rotating flange, 33, V-shaped clamping groove, 34, positioning groove, 35, rotating sliding groove, 36, support seat, 37, support rod, 38, assembly seat, 39, locking claw, 40, assembly groove, 41, limiting sliding groove, 42, limiting pin, 43, support ring, 44, return spring, 45, limiting groove, 46, limiting rod, 47, part pre-dispensing disc. DETAILED DESCRIPTION

[0038] The steering gear assembly gap adjustment machine is composed of a workbench 1, a pressing mechanism, a grease application mechanism, a transfer mechanism, a clamping fixture and a torque wrench 2. The workbench 1 is provided with the pressing mechanism on the table top, so as to press the support seat of the steering gear to the steering gear housing through the pressing mechanism, thereby assembling the steering gear support seat. The workbench 1 at one end of the pressing mechanism is provided with the grease application mechanism, so as to apply lubricating grease to the side of the steering gear support seat in contact with the steering gear rack through the grease application mechanism, thereby lubricating the steering gear rack and the steering gear support seat through the lubricating grease, reducing the friction between the steering gear rack and the steering gear support seat and the wear of the steering gear rack and the steering gear support seat. The workbench 1 at the other end of the pressing mechanism is provided with the transfer mechanism, so as to transfer the steering gear support seat through the transfer mechanism, so that the steering gear support seat is transferred from the grease application mechanism to the pressing mechanism, so that the steering gear support seat can be pressed after the grease application is completed. The workbench 1 beside the pressing mechanism is provided with the clamping fixture, so as to clamp the steering gear after the steering gear support seat is pressed through the clamping fixture, thereby facilitating the assembly of the adjusting screw plug and the adjustment of the extrusion force of the steering gear rack by the steering gear support seat. The workbench 1 outside the clamping fixture is provided with the torque wrench 2 (Dongri CEM3-G series digital torque wrench), so as to tighten the steering gear adjusting screw plug through the torque wrench 2. Since the torque wrench 2 can control the torque of the steering gear adjusting screw plug, the extrusion force of the steering gear compression spring by the steering gear adjusting screw plug can be controlled, thereby controlling the extrusion force of the steering gear rack by the steering gear support seat, adjusting the meshing gap between the steering gear support seat and the steering gear rack. The torque wrench 2 is placed on the workbench 1 through a bracket. Preferably, the torque wrench 2 is hung on the top of the workbench 1 through a spring crane (PUMA AA-2013 spring crane), so as to be convenient to take and not easy to lose.

[0039] The pressing mechanism is composed of a positioning seat 3, a support plate 4, a quick clamp 5, a pressing electric cylinder 6 and a pressing head 7. The positioning seat 3 is provided with three support plates 4 in a triangular shape, which support and position the two ends of the steering gear housing and the position of the input shaft respectively. The top of the support plate 4 is provided with a positioning groove 8. The support plate 4 supports and positions the two ends of the steering gear housing and the position of the input shaft through the positioning groove 8, accurately fixes the steering gear on the positioning seat 3, and ensures that the steering gear support seat can be transferred to the adjustment hole of the steering gear housing when the transfer mechanism transfers the steering gear support seat, so that the steering gear support seat can be accurately pressed into the adjustment hole of the steering gear housing. The quick clamp 5 (HAOSHOU HS-101-E type quick clamp) is arranged between the support plates 4 and connected with the positioning seat 3 through an assembly plate 9. The quick clamp 5 presses down the steering gear housing through the quick clamp 5, so as to tightly fix the steering gear housing in the fixed groove of the support plate, thereby preventing the steering gear housing from moving during pressing and ensuring accurate pressing. The positioning seat 3 above the quick clamp 5 is provided with the pressing electric cylinder 6, and the piston rod end of the pressing electric cylinder 6 is provided with the pressing head 7. Since the pressing electric cylinder 6 has the functions of controlling the downward speed, pressure, downward distance and adjusting through pressure feedback, when the steering gear support seat is pressed by the pressing head 7, the pressing can be carried out at the set downward speed, pressure and downward distance, so that the steering gear support seat can be pressed in place and the steering gear support seat is not easy to be damaged, thereby ensuring the pressing quality. The positioning seat 3 is fixedly connected with the workbench 1 through fixing bolts. The pressing electric cylinder 6 is provided with a pressure sensor and a displacement sensor, so as to detect the pressure change of the pressing head 7 to the support seat during pressing of the support seat, so as to judge the pressing condition of the support seat through pressure and displacement changes, such as the O-ring on the support seat being cut during pressing, even cut off, which will cause abnormal fluctuation of pressure and displacement, sudden increase of pressure and abnormal decrease of displacement, so that the pressing quality can be effectively judged through pressure and displacement detection, and the pressing quality of the support seat is controlled to ensure the qualified pressing.

[0040] The grease applying mechanism is composed of a mounting base 10, a grease applying motor 11, a rotary table 12, a spray gun 13, a grease storage barrel 14 and a delivery pump 15. The mounting base 10 is fixed with the grease applying motor 11. The rotary table 12 is arranged on the output shaft of the grease applying motor 11. The grease applying motor 11 drives the rotary table 12 to rotate, thereby driving the steering gear support seat placed on the rotary table 12 to rotate, so that the steering gear support seat uniformly applies grease to the surface of the steering gear support seat during rotation. The spray gun 13 is arranged on the mounting base 10 above the rotary table 12, so as to spray lubricating grease to the steering gear support seat placed on the rotary table 12 through the spray gun 13, so that the lubricating grease covers the side of the steering gear support seat in contact with the steering gear rack, and the contact surface between the steering gear support seat and the steering gear rack is lubricated through the sprayed lubricating grease. The grease storage barrel 14 is arranged beside the workbench 1. The delivery pump 15 is arranged on the grease storage barrel 14 and communicates with the spray gun 13 through a communicating pipe. The delivery pump 15 pumps the lubricating grease stored in the grease storage barrel 14 to the spray gun 13, and then sprays the lubricating grease outward through the spray gun 13. The mounting base 10 is fixedly connected with the workbench 1 through fixing bolts.

[0041] The transfer mechanism is composed of an L-shaped mounting plate 16, a lifting cylinder 17, a rotating cylinder 18, a turnover cylinder 19, a clamping jaw cylinder 20 and a clamping jaw 21. The mounting plate 16 is fixed with the lifting cylinder 17, the piston rod end of the lifting cylinder 17 is provided with the rotating cylinder 18, the rotating shaft of the rotating cylinder 18 is provided with the turnover cylinder 19 through a rotating arm 22, the rotating shaft of the turnover cylinder 19 is provided with the clamping jaw 21 through the clamping jaw cylinder 20, and the mounting plate 16 is fixedly connected with the workbench 1 through fixing bolts. The lifting cylinder 17 is used for lifting the steering support seat through the rotating cylinder 18, the turnover cylinder 19, the clamping jaw cylinder 20 and the clamping jaw 21 in sequence during the lifting process of the piston rod of the lifting cylinder 17, thereby lifting the steering support seat placed on the rotary table 12, so that the steering support seat is separated from the rotary table 12, or the steering support seat is lowered, so that the end of the steering support seat is inserted into the steering housing, thereby facilitating the press fitting of the steering housing. The rotating cylinder 18 is used for transferring the steering support seat through the turnover cylinder 19, the clamping jaw cylinder 20 and the clamping jaw 21 in sequence during the rotation of the rotating cylinder 18, thereby transferring the steering support seat from the lubricating mechanism to the press fitting mechanism, so that the steering support seat is press fitted after lubrication. The turnover cylinder 19 is used for turning over the steering support seat clamped between the clamping jaws 21 through the turnover cylinder 19, so that the side of the steering support seat in contact with the steering rack is turned from upward to downward, thereby turning over the steering support seat from the upward lubrication state to the downward press fitting state. The clamping jaw cylinder 20 is used for opening and closing the clamping jaws 21, thereby clamping the steering support seat, so that the steering support seat is transferred through the clamping jaws 21.

[0042] The clamping and fixing device is composed of a base 23, a fixed plate 24, a clamping cylinder 25, a positioning plate 26 and a sliding plate 27. One end of the base 23 is fixedly provided with the fixed plate 24, the fixed plate 24 is provided with the clamping cylinder 25, the other end of the base 23 is fixedly provided with the positioning plate 26, the sliding rod 28 is arranged between the fixed plate 24 and the positioning plate 26, the sliding plate 27 is movably arranged on the sliding rod 28, and the sliding plate 27 is fixedly connected with the piston rod end of the clamping cylinder 25. The clamping cylinder 25 is used for driving the sliding plate 27 to move towards the positioning plate 26 through the clamping cylinder 25, so that the steering is clamped between the sliding plate 27 and the positioning plate 26, thereby clamping and fixing the steering. Compared with the use of matching plates, rods and grooves to lock and fix the steering, the labor intensity is effectively reduced and the work efficiency is improved.

[0043] The end faces of the positioning plate 26 and the sliding plate 27 are respectively provided with self-adaptive clamping assemblies to adapt to the deflector surface through the self-adaptive clamping assemblies, increase the contact area with the deflector shell and its additional parts through the self-adaptive clamping assemblies, thereby effectively reducing the pressure on the deflector, so as to effectively improve the clamping force on the deflector while ensuring that the deflector is not deformed, ensure the stability of clamping the deflector, and ensure that the deflector does not easily shake when the deflector is operated. The base 23 between the positioning plate 26 and the sliding plate 27 is symmetrically installed with support assemblies on both sides to support the deflector before clamping the deflector through the support assemblies, and the support of the deflector through the support assemblies replaces the handheld deflector, preventing the sliding plate 27 from pushing the deflector to move when clamping the deflector, which will injure the hand or knock down the operator, thereby effectively avoiding safety accidents through the auxiliary support of the support assemblies.

[0044] The self-adaptive clamping assembly includes a large clamping block 29 that can rotate relative to the positioning plate 26 or the sliding plate 27, a middle clamping block 30 that can rotate relative to the large clamping block 29, and a small clamping block 31 that can rotate relative to the middle clamping block 30. The large clamping block 29 is symmetrically installed with the middle clamping block 30, and the middle clamping block 30 is symmetrically installed with the small clamping block 31. Since the large clamping block 29, the middle clamping block 30, and the small clamping block 31 can rotate respectively, in the initial stage, when the force of the deflector on the large clamping block 29, the middle clamping block 30, and the small clamping block 31 is small, the additional parts on the deflector shell can drive the large clamping block 29, the middle clamping block 30, and the small clamping block 31 to rotate, so that the large clamping block 29, the middle clamping block 30, and the small clamping block 31 adapt to the shape of the deflector shell and its additional parts. The large clamping block 29, the middle clamping block 30, and the small clamping block 31 convert the single-point contact on the protruding part of the deflector into multi-point contact or surface contact, thereby effectively increasing the contact area with the deflector shell and its additional parts through the large clamping block 29, the middle clamping block 30, and the small clamping block 31, effectively reducing the pressure on the deflector shell and its additional parts, thereby ensuring that the deflector shell and its additional parts are not easily deformed, allowing the deflector to maximize the clamping force while ensuring that it is not deformed, and ensuring the stability and reliability of clamping.

[0045] The large clamping block 29 and the middle clamping block 30 are respectively in the shape of a semi-cylinder, and the small clamping block 31 is in the shape of a cylinder; the edges of the two ends of the circumferential surface of the large clamping block 29 and the middle clamping block 30 and the edges of the two ends of the circumferential surface of the small clamping block 31 are respectively provided with arc-shaped rotating flanges 32. The two ends of the circumferential surface of the large clamping block 29 and the middle clamping block 30 and the edges of the two ends of the circumferential surface of the positioning plate 26 and the slide plate 27 above the slide rod 28 are respectively provided with positioning grooves 34 in the shape of a semicircle in cross section, and the large clamping block 29, the middle clamping block 30 and the small clamping block 31 are respectively connected through the positioning grooves 34; the two ends of the positioning grooves 34 are respectively provided with rotating sliding grooves 35, and the rotating sliding grooves 35 are in sliding connection with the rotating flanges 32. The rotating sliding grooves 35 can make the rotating flanges 32 slide in the rotating sliding grooves 35, so that the large clamping block 29 can rotate relative to the slide plate 27 or the positioning plate 26, the middle clamping block 30 can rotate relative to the large clamping block 29, and the small clamping block 31 can rotate relative to the middle clamping block 30, so that the large clamping block 29, the middle clamping block 30 and the small clamping block 31 can be adapted to the steering gear housing and its accessories. Since the large clamping block 29, the middle clamping block 30 and the small clamping block 31 are respectively embedded through the positioning grooves 34, the large clamping block 29, the middle clamping block 30 and the small clamping block 31 can be prevented from moving up and down through the positioning grooves 34, so as to effectively prevent the steering gear from moving up and down after being clamped by the large clamping block 29, the middle clamping block 30 and the small clamping block 31. The middle clamping block 30 is at least one, and the middle clamping block 30 can be a plurality of blocks embedded with each other. When the number of the middle clamping block 30 is large, the steering gear surface can be better adapted, but since the blocks are embedded with each other, the blocks will be successively reduced, and when the number of the middle clamping block 30 embedded with each other is too large, the size of the small clamping block 31 will be too small.

[0046] The middle part of the small clamping block 31 opposite to the rotating flange 32 is provided with a V-shaped clamping groove 33, so that when the small clamping block 31 clamps the steering gear, the small clamping block 31 can limit the steering gear from moving up and down through the V-shaped clamping groove 33, so as to maintain the stability of clamping.

[0047] The support assembly comprises a support base 36, a support rod 37, an assembly base 38 and a locking claw 39. The support base 36 is in the shape of a "N" in cross section. The support rod 37 is movably mounted on the support base 36 by a pin shaft. The top end of the support rod 37 movably sheaths the assembly base 38. The top end surface of the assembly base 38 is provided with an assembly groove 40. The locking claw 39 is symmetrically mounted in the assembly groove 40 by a pin shaft. The support base 36 is fixedly connected with the base 23 by a fixing bolt. The assembly groove 40 enables the locking claw 39 to rotate in the assembly groove 40 by the pin shaft, so that the symmetrically arranged locking claws 39 can be mutually opened or closed. The inside end of the locking claw 39 protrudes from the top end surface of the assembly base 38, so that when the deflector is pressed by its own weight, the locking claw 39 can clamp the deflector, and the deflector is fixed on the assembly base 38. The support rod 37 can rotate relative to the support base 36 by the pin shaft, so that the assembly base 38 and the locking claw 39 can swing relative to the support base 36, so that the deflector fixed between the locking claws 39 can swing relative to the support base 36. Thus, when the slide plate 27 pushes the deflector, the support assembly can support the deflector and will not hinder the movement of the deflector.

[0048] The top end of the support rod 37 is provided with a limiting sliding groove 41, and the assembly base 38 is provided with a limiting pin 42. The end of the limiting pin 42 is in sliding connection with the limiting sliding groove 41. The limiting sliding groove 41 enables the assembly base 38 to float up and down relative to the support rod 37 to a certain extent (the floating range of the assembly base 38 is the length range of the limiting sliding groove 41), so that the height of the assembly base 38 and the locking claw 39 can be adapted to different models of deflectors, so that a small-diameter deflector can be clamped in the middle of the V-shaped clamping groove 33 of the small clamping block 31, and a large-diameter deflector can also be clamped in the middle of the V-shaped clamping groove 33 of the small clamping block 31, which can effectively avoid interference.

[0049] The support rod 37 between the support base 36 and the assembly base 38 sheaths a support ring 43, and the support rod 37 between the support ring 43 and the assembly base 38 sheaths a return spring 44. The return spring 44 can push the assembly base 38 to reset by the elastic force of the return spring 44, and can buffer the deflector when the deflector is placed on the support assembly by the elastic force of the return spring 44.

[0050] The support base 36 below the support ring 43 is in the shape of an "A" letter. When the support rod 37 swings downward, the support base 36 pushes the support ring 43 away from the pin shaft between the support base 36 and the support rod 37, so as to compress the return spring 44, and thus push the support rod 37 to reset and buffer the swing of the support rod 37 by the compressed return spring 44.

[0051] The support base 36 below the support rod 37 is provided with a limiting groove 45, and the bottom end of the support rod 37 is provided with a limiting rod 46, and the bottom end of the limiting rod 46 extends into the limiting groove 45 and is connected with the inner wall of the limiting groove 45. The function of the limiting groove 45 is to limit the swing range of the support rod 37 by matching the limiting groove 45 with the limiting rod 46, so that when the support rod 37 supports the steering gear through the assembly seat 38 and the locking claw 39, the swing range of the steering gear can be limited.

[0052] The upper part of the clamping cylinder 25 is provided with a part pre-dispensing disc 47, and the part pre-dispensing disc 47 is fixedly connected with the workbench 1 through a support. The function of the part pre-dispensing disc 47 is to pre-store parts (such as steering gear adjusting plugs, locking nuts for locking steering gear adjusting plugs), so as to facilitate the taking of the parts, thereby facilitating the assembly of the parts.

[0053] The assembly and adjustment method of the steering gear, comprising the following steps:

[0054] Put the steering support seat on the turntable 12 of the grease mechanism of the steering gear assembly gap adjusting machine, make the contact surface of the steering support seat face up to the spray gun, and make the spring mounting hole of the steering support seat downwardly fit on the turntable 12. After the steering support seat is placed in position, start the grease motor 11 and the delivery pump 15. After the grease motor 11 is started, the grease motor 11 drives the steering support seat to rotate through the turntable 12. After the delivery pump 15 is started, the delivery pump 15 pumps the lubricating grease stored in the grease storage barrel 14 to the spray gun 13, so that the lubricating grease is uniformly sprayed on the rotating steering support seat through the spray gun 13. After the steering support seat is placed in position, the steering gear is placed on the support plate 4 of the pressing mechanism. The support plate 4 supports and positions the two end heads of the steering gear housing and the input shaft position through the positioning groove 8. After the steering gear is placed in position, the steering gear is fixed on the support plate 4 by the quick clamp 5, and waits for the grease mechanism to complete the greasing. After the steering support seat is coated by the grease mechanism, the rotary cylinder 18 drives the clamping jaw 21 to rotate to the position between the steering support seat and the spray gun 13 through the rotating arm 22, the overturning cylinder 19 and the clamping jaw cylinder 20 in sequence. After the clamping jaw 21 is rotated to position, the clamping jaw cylinder 20 opens the clamping jaw 21. After the clamping jaw 21 is opened, the lifting cylinder 17 drives the clamping jaw 21 to descend through the rotary cylinder 18, the rotating arm 22, the overturning cylinder 19, the clamping jaw cylinder 20 in sequence, so that the steering support seat is between the opened clamping jaw 21. After the clamping jaw 21 is descended to position, the clamping jaw cylinder 20 closes the clamping jaw 21 to clamp the steering support seat. After the clamping jaw 21 clamps the steering support seat, the lifting cylinder 17 drives the steering support seat to ascend through the rotary cylinder 18, the rotating arm 22, the overturning cylinder 19, the clamping jaw cylinder 20 and the clamping jaw 21 in sequence, so that the steering support seat ascends and is separated from the turntable 12. After the steering support seat is separated from the turntable 12, the rotary cylinder 18 drives the steering support seat to move to the pressing mechanism through the rotating arm 22, the overturning cylinder 19, the clamping jaw cylinder 20 and the clamping jaw 21 in sequence. During the movement of the steering support seat to the pressing mechanism, the overturning cylinder 19 drives the steering support seat to overturn through the clamping jaw cylinder 20 and the clamping jaw 21 in sequence, so that the steering support seat overturns by 180 degrees. When the steering support seat rotates to the position above the adjusting hole of the steering gear housing, the lifting cylinder 17 drives the steering support seat to descend through the rotary cylinder 18, the rotating arm 22, the overturning cylinder 19, the clamping jaw cylinder 20 and the clamping jaw 21 in sequence, so that the end head of the steering support seat is inserted into the adjusting hole of the steering gear housing. After the end head of the steering support seat is inserted into position, the clamping jaw 21 is opened. After the steering support seat is descended to position, the pressing electric cylinder 6 is started, and the pressing electric cylinder 6 drives the pressing head 7 to descend, so that the steering support seat is pressed into the adjusting hole of the steering gear housing.During the pressing process, the pressing quality of the steering support seat is judged by observing the pressure curve transmitted by the pressure sensor and displacement sensor on the pressing electric cylinder 6 to the display screen. If the pressure displacement curve is not normal, that is, the O-ring of the steering support seat is cut during the pressing process, the pressing electric cylinder 6 is stopped, the steering support seat is taken out of the steering housing, and the O-ring of the steering support seat is replaced for re-pressing.

[0055] After the pressing of the steering support seat is completed, the quick clamp 5 is loosened, the steering is taken off the support plate, and the steering is placed between the locking claws 39 of the support assembly on both sides of the base 23. After the steering is placed between the locking claws 39, the steering is pressed down under the action of its own weight, so that the locking claws 39 clamp the steering. After the steering is placed between the locking claws 39, the clamping cylinder 25 is started, the clamping cylinder 25 pushes the sliding plate 27 to move along the slide rod 28 to the positioning plate 26, so that the self-adapting clamping assembly on the sliding plate 27 and the positioning plate 26 approaches the steering. In the initial stage of the self-adapting clamping assembly contacting the steering, the reaction force of the steering on the large clamping block 29, the middle clamping block 30 and the small clamping block 31 is small, so that the large clamping block 29, the middle clamping block 30 and the small clamping block 31 can rotate under the reaction force of the steering, so that the large clamping block 29, the middle clamping block 30 and the small clamping block 31 adapt to the shape of the steering housing and its accessories, and the contact area with the steering housing and its accessories is increased. During the rotation of the large clamping block 29, the middle clamping block 30 and the small clamping block 31 under the reaction force of the steering, the small clamping block 31 guides the position of the steering through the V-shaped clamping groove 33, and clamps the steering in the middle of the self-adapting clamping assembly. After the rotation of the large clamping block 29, the middle clamping block 30 and the small clamping block 31 under the reaction force of the steering is completed, that is, after the large clamping block 29, the middle clamping block 30 and the small clamping block 31 adapt to the shape of the steering housing and its accessories, during the process of the clamping cylinder 25 continuing to push the sliding plate 27 to clamp the steering in cooperation with the positioning plate 26, the friction force between the sliding plate 27 or the positioning plate 26 and the large clamping block 29, between the large clamping block 29 and the middle clamping block 30, between the middle clamping block 30 and the small clamping block 31, and between the small clamping block 31, the middle clamping block 30 and the large clamping block 29 and the steering respectively gradually increases, and then the relative positions of the sliding plate 27, the positioning plate 26, the large clamping block 29, the middle clamping block 30, the small clamping block 31 and the steering are locked under the action of the friction force, so that the steering is fixed.

[0056] After the clamping and fixing device clamps the steering gear, the compression spring and the adjusting screw plug are sequentially placed into the adjusting hole of the steering gear housing, and the adjusting screw plug is tightened in the adjusting hole of the steering gear housing through the torque wrench 2 which is provided with a torque. After the torque wrench 2 tightens the adjusting screw plug in place, the adjusting screw plug is locked on the steering gear housing through the locking nut.

[0057] When the steering gear is taken out, the reset clamping cylinder 25 drives the self-adaptive clamping assembly on the sliding plate 27 to move to one side of the fixed plate 24. After the small clamping block 31 of the self-adaptive clamping assembly on the sliding plate 27 is separated from the steering gear, the steering gear is taken out upward. During this process, the locking claw 39 is no longer clamped on the steering gear due to the loss of extrusion of the steering gear, and the locking claw 39 can be automatically opened and reset during the process of taking out the steering gear. After the steering gear is taken out, the assembly seat 38, the locking claw 39 and the supporting rod 37 are reset under the elastic force of the reset spring 44 respectively.

[0058] The steering gear assembly gap adjustment machine can automatically lubricate the support seat of the steering gear through the lubricating mechanism and automatically transfer the lubricated support seat to the pressing mechanism for pressing. Since the lubrication and pressing are automatically completed on one workbench station without flowing through different stations, the cycle time can be effectively shortened, the labor intensity and labor cost can be reduced. Since the lubrication is realized by the mechanical lubrication, the support seat can be standardized (quantitative and automatic) lubricated. The support seat assembly process is automatically completed, the pressure displacement curve is used to monitor the pressing quality (O-ring cutting injury and cutting can be identified and determined) during the pressing process, which can effectively improve the assembly quality. The large clamping block, the middle clamping block and the small clamping block can automatically adapt to the surface of the steering gear housing through rotation, which can effectively increase the contact area with the steering gear housing and its additional parts, reduce the pressure on the steering gear housing, and effectively improve the clamping force of the steering gear housing without deforming the steering gear housing, thereby effectively improving the clamping stability. Since the steering gear housing surface is adapted through rotation, the structure and size do not need to be adjusted to adapt to different models of steering gears, which can effectively improve the universality and applicability. The problem of low production efficiency of the existing assembly method is solved.

Claims

1. A steering knuckle assembly gap adjustment machine, which is composed of a workbench (1), a press-fitting mechanism, a grease applying mechanism, a transfer mechanism, a clamping fixture and a torque wrench (2), characterized in that: The workbench (1) is provided with a press-fitting mechanism, a greasing mechanism is arranged at one end of the press-fitting mechanism, a transfer mechanism is arranged at the other end of the press-fitting mechanism, a clamping fixing device is arranged on the workbench (1) beside the press-fitting mechanism, and a torque wrench (2) is arranged on the workbench (1) outside the clamping fixing device. The clamping fixing device is composed of a base (23), a fixed plate (24), a clamping cylinder (25), a positioning plate (26) and a sliding plate (27), and support assemblies are symmetrically arranged on both sides of the base (23) between the positioning plate (26) and the sliding plate (27). The support assembly comprises a support base (36), a support rod (37), an assembly base (38) and a locking claw (39), the cross section of the support base (36) is in the shape of a "n", the support rod (37) is movably arranged on the support base (36) through a pin shaft, the assembly base (38) is movably arranged on the top end of the support rod (37), the top end surface of the assembly base (38) is provided with an assembly groove (40), the locking claw (39) is symmetrically arranged in the assembly groove (40) through a pin shaft, and the inner end of the locking claw (39) protrudes from the top end surface of the assembly base (38); the support base (36) is fixedly connected with the base (23) through a fixing bolt. The top end of the support rod (37) is provided with a limiting sliding groove (41), and the assembly base (38) is provided with a limiting pin (42), the end of the limiting pin (42) is connected with the limiting sliding groove (41) in sliding mode. A support ring (43) is arranged on the support rod (37) between the support base (36) and the assembly base (38), and a return spring (44) is arranged on the support rod (37) between the support ring (43) and the assembly base (38); the support base (36) below the support ring (43) is in the shape of an "∧". A limiting groove (45) is arranged on the support base (36) below the support rod (37), and a limiting rod (46) is arranged on the bottom end of the support rod (37), the bottom end of the limiting rod (46) extends into the limiting groove (45) and is abutted with the inner wall of the limiting groove (45).

2. The steering gear assembly gap adjustment machine of claim 1, wherein: The press-fitting mechanism comprises a positioning base (3), a support plate (4), a quick clamp (5), a press-fitting electric cylinder (6) and a pressure head (7), three support plates (4) are arranged on the positioning base (3) in the shape of a triangle, and the three support plates (4) are respectively arranged at the two ends of the steering gear housing and the position of the input shaft to support and position the steering gear housing and the input shaft; the top of the support plate (4) is provided with a positioning groove (8); the quick clamp (5) is arranged between the support plates (4), and the quick clamp (5) is connected with the positioning base (3) through an assembly plate (9); the positioning base (3) above the quick clamp (5) is provided with the press-fitting electric cylinder (6), and the piston rod end of the press-fitting electric cylinder (6) is provided with the pressure head (7); and the positioning base (3) is fixedly connected with the workbench (1) through a fixing bolt.

3. The steering gear assembly gap adjustment machine of claim 1 wherein: The grease coating mechanism is composed of a mounting base (10), a grease coating motor (11), a rotary table (12), a spray gun (13), a grease storage barrel (14) and a delivery pump (15), the mounting base (10) is fixed with the grease coating motor (11), the output shaft of the grease coating motor (11) is provided with the rotary table (12), and the mounting base (10) above the rotary table (12) is provided with the spray gun (13); the grease storage barrel (14) is arranged beside the workbench (1), the grease storage barrel (14) is provided with the delivery pump (15), the delivery pump (15) is communicated with the spray gun (13) through a communicating pipe; and the mounting base (10) is fixedly connected with the workbench (1) through fixing bolts.

4. The steering gear assembly gap adjustment machine of claim 1 wherein: The transfer mechanism is composed of an L-shaped mounting plate (16), a lifting cylinder (17), a rotating cylinder (18), a turnover cylinder (19), a clamping jaw cylinder (20) and a clamping jaw (21), the mounting plate (16) is fixed with the lifting cylinder (17), the piston rod end of the lifting cylinder (17) is provided with the rotating cylinder (18), the rotating shaft of the rotating cylinder (18) is provided with the turnover cylinder (19) through a rotating arm (22), and the rotating shaft of the turnover cylinder (19) is provided with the clamping jaw (21) through the clamping jaw cylinder (20); and the mounting plate (16) is fixedly connected with the workbench (1) through fixing bolts.

5. The steering gear assembly gap adjustment machine of claim 1 wherein: One end of the base (23) is provided with the clamping cylinder (25) through the fixing plate (24), the other end of the base (23) is fixedly provided with the positioning plate (26), the slide rods (28) are arranged in parallel between the positioning plate (26) and the fixing plate (24), the slide plate (27) is movably arranged on the slide rods (28), and the slide plate (27) is fixedly connected with the piston rod end of the clamping cylinder (25); the end faces of the positioning plate (26) and the slide plate (27) are respectively provided with self-adaptive clamping assemblies, and the base (23) is fixedly connected with the workbench (1) through fixing bolts.

6. The turner assembly gap adjustment machine of claim 5, wherein: The self-adaptive clamping assembly comprises a large clamping block (29), a middle clamping block (30) and a small clamping block (31), the middle clamping block (30) is symmetrically arranged on the large clamping block (29), and the small clamping block (31) is symmetrically arranged on the middle clamping block (30); the large clamping block (29) and the middle clamping block (30) are half-cylindrical, and the small clamping block (31) is cylindrical; the edges of the two end faces of the circumferential faces of the large clamping block (29) and the middle clamping block (30) and the two end faces of the small clamping block (31) are respectively provided with arc-shaped rotating flanges (32); the middle part of the small clamping block (31) opposite to the rotating flange (32) is provided with a V-shaped clamping groove (33); the two end faces of the large clamping block (29) and the middle clamping block (30) and the end faces of the positioning plate (26) and the slide plate (27) above the slide rods (28) are respectively provided with positioning grooves (34) with a half-circular cross section, and the two end faces of the positioning grooves (34) are respectively provided with rotating sliding grooves (35) in sliding connection with the rotating flanges (32).

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