Multi-directional bushing press fitting equipment for rear subframe

Abstract

A kind of multi-direction bushing press equipment of rear subframe belongs to press equipment technical field, by rack mechanism, left transverse press, Y direction servo sliding table mechanism, right transverse press, left vertical press, right vertical press, tooling mechanism is composed, the tooling mechanism is used for the positioning clamping of rear subframe, Y direction servo sliding table mechanism on rack mechanism is driven tooling mechanism to move, with left transverse press, right transverse press, left vertical press and right vertical press are completed 3 directions 8 bushings of rear subframe press equipment by intercoordination, and each position press equipment curve is displayed in real time on industrial computer.The present application is clamped once by tooling mechanism, and 3 directions 8 bushings of rear subframe are completed press equipment by Y direction servo sliding table mechanism and left transverse press, right transverse press, left vertical press and right vertical press intercoordination, greatly save the artificial cost, reduce labor intensity, reduce operating cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile press-fitting equipment, and particularly relates to a multi-direction bushing press-fitting equipment for a rear subframe. BACKGROUND

[0002] At present, new energy vehicles and intelligent driving technologies are constantly updated and iterated, and rear subframe products also begin to move towards lightweight and structural diversification. The rear subframe, as an important part connecting the vehicle body and the wheels, is an indispensable component in the automobile chassis. The structural design and lightweight design of the rear subframe directly affect the handling performance, fuel economy and ride comfort of the vehicle.

[0003] In order to improve these performances, the structural design of the rear subframe is gradually becoming more complex, and the number of bushings is gradually increasing from the original four body bushings to eight bushings. The pressing direction is also increased from a single vertical direction to three directions, which puts higher requirements on the press-fitting equipment of the rear subframe. The conventional press-fitting of the rear subframe bushing is planned according to the pressing direction. When the bushing press-fitting of the rear subframe has three directions, three separate press-fitting equipment are often needed to complete the press-fitting of one rear subframe assembly through three clamping and press-fitting operations. The rear subframe is large in size and heavy, and two people are often needed to operate each press-fitting equipment to complete the loading and unloading operation, which requires a large number of manual labor.

[0004] Therefore, it has become one of the technical problems to be solved by the technical personnel in the field to seek a multi-direction bushing press-fitting equipment for the rear subframe, which can complete the installation of eight bushings in three directions of the rear subframe through one clamping, thereby saving labor costs, reducing labor intensity and reducing operating costs.

[0005] Therefore, in view of the problems existing in the prior art, the present application is designed by the present applicant with many years of experience in this field, and actively researches and improves the present application, thereby providing a multi-direction bushing press-fitting equipment for a rear subframe. SUMMARY

[0006] The present application aims to provide a multi-direction bushing press-fitting equipment for a rear subframe, which can solve the problems of high labor cost, complicated operation, high labor intensity and high operating cost in the conventional press-fitting of the rear subframe bushing.

[0007] To achieve the purpose of the present application, the present application provides a rear subframe multi-direction bushing press equipment, which is composed of a rack mechanism, a left transverse press, a Y-direction servo sliding table mechanism, a right transverse press, a left vertical press, a right vertical press and a tooling mechanism. The tooling mechanism is used for positioning and clamping of the rear subframe, and the Y-direction servo sliding table mechanism fixed on the rack mechanism drives the tooling mechanism to move in the Y direction. The left transverse press, the right transverse press, the left vertical press and the right vertical press cooperate with each other to complete the press fitting of eight bushes in three directions on the rear subframe, and the press fitting curves at each position are displayed in real time on the industrial computer. The left transverse press and the right transverse press have the same composition and working mode. The left vertical press and the right vertical press have the same composition and working mode. The left transverse press comprises a transverse servo motor, a transverse press, a synchronous pulley, a transverse screw, a transverse screw bearing, a press seat, a press seat sliding block, a connecting plate, a support, a fixed plate, a transverse cylinder, a press seat guide rail, a pull block pin, a pull block, a clasp spring and a transverse press head. The transverse servo motor, the synchronous pulley, the transverse screw and the transverse screw bearing constitute a folding servo cylinder fixed on the press seat. The pull block is fixed on the press seat through the pull block pin and the clasp spring. The press seat sliding block is installed below the press seat and cooperates with the press seat guide rail fixed on the support. The support and the fixed frame are fixed on the bottom plate of the rack mechanism. The transverse cylinder fixed on the fixed frame is connected with the connecting plate fixed on the lower side of the press seat, which can drive the press seat to move transversely, so that the pull block and the profiling groove of the tooling mechanism are in the same position in the transverse direction. When the tooling mechanism moves to the specified position in the Y direction, the pull block can be covered. When the tooling mechanism moves to other positions in the Y direction, the pull block can be withdrawn from the profiling groove.

[0008] Optionally, the rack mechanism comprises a guardrail, a protective net, a control cabinet, a safety door, a bottom plate, a labeling machine, an industrial computer and a safety grating. The guardrail, the protective net, the safety door and the bottom plate form the main frame of the press fitting equipment. The safety grating is arranged at the bottom side of the guardrail. The industrial computer and the labeling machine are electrically connected with the control cabinet fixed on the guardrail.

[0009] Optionally, the left transverse press further comprises a transverse screw seat, a transverse anti-torsion push rod, a transverse sliding block, a transverse guide rail, a transverse press head seat, a transverse press head pin and a transverse pressure sensor. The transverse screw seat fixed on the transverse anti-torsion push rod cooperates with the transverse screw, and the transverse anti-torsion push rod is fixedly connected with the transverse sliding block and can move along the transverse guide rail fixed on the press seat. The transverse pressure sensor and the transverse press head seat are fixed on the transverse anti-torsion push rod. The transverse press head is installed on the transverse press head seat through the transverse press head pin. When the transverse press head is pressed, the force is transmitted to the transverse pressure sensor.

[0010] Optionally, the Y servo slide mechanism comprises a Y servo motor, a Y motor base, a Y coupling, a rear bearing base, a Y screw, a Y guide rail, a tool mounting plate, a nut base, a front bearing base, a front limit switch, a positioning sleeve, a rear limit switch, a slide frame, a Y slider, the Y motor base, the Y guide rail, the front limit switch and the rear limit switch are fixed on the slide frame; the Y screw is connected with the Y servo motor fixed on the Y motor base through the Y coupling, and is installed on the slide frame through the front bearing base and the rear bearing base; the tool mounting plate provided with the positioning sleeve and the Y slider is connected with the nut base on the Y screw; the Y servo motor drives the Y screw to rotate to drive the tool mounting plate to move along the Y guide rail; the front limit switch and the rear limit switch limit the movement range of the tool mounting plate.

[0011] Optionally, the vertical press comprises a vertical servo motor, a vertical motor base, a vertical coupling, a vertical screw, a vertical bearing, a vertical bearing base, a bearing cover, a vertical nut base, a vertical anti-torsion push rod, a vertical pressure sensor, a vertical pressure head base, a vertical pressure head bolt, a vertical pressure head, a vertical anti-torsion push rod slider, a vertical anti-torsion push rod guide rail, a C-shaped frame, a spacer, a top shaft, a C-shaped frame slider, a C-shaped frame guide rail, a stand, a vertical air cylinder, a vertical piston rod, a stand guide rail, a manual nut base, a manual screw rod, a manual screw bearing base, a position recorder, a handle, the vertical servo motor is fixed on the vertical motor base, and the vertical motor base is fixed on the C-shaped frame; the vertical servo motor is connected with the upper end of the vertical screw through the vertical coupling, and the vertical screw is limited to rotate on the C-shaped frame through the vertical bearing, the vertical bearing base and the bearing cover; the upper end of the vertical anti-torsion push rod is fixedly connected with the vertical nut base, and the lower end of the vertical anti-torsion push rod is fixedly connected with the vertical pressure sensor and the vertical pressure head base; under the rotation of the vertical screw, the vertical anti-torsion push rod moves up and down along the vertical anti-torsion push rod guide rail fixed on the C-shaped frame through the vertical anti-torsion push rod slider, the vertical pressure head is connected with the vertical pressure head base through the vertical pressure head bolt, and when the vertical pressure head is forced, the force is transmitted to the vertical pressure sensor, so that the pressure data is collected in real time; the stand guide rail is matched with the groove at the bottom of the stand, and is fixed on the bottom plate of the rack mechanism through bolts; the vertical air cylinder is fixed on the stand, the vertical air cylinder drives the vertical piston rod fixed with the C-shaped frame to move up and down along the C-shaped frame guide rail fixed on the stand; one end of the manual screw rod provided with the handle rotates around the manual screw bearing base fixed on the bottom plate, and the other end is matched with the manual nut base fixed on the stand; loosening the bolts for fixing the stand, rotating the handle can realize the left and right position adjustment of the vertical press along the stand guide rail on the bottom plate of the rack mechanism, and the position recorder can record the position of the left vertical press.

[0012] Optionally, the tooling mechanism comprises a tooling base plate, a bushing positioning plate, a right air cylinder, a vehicle body bushing positioning seat, a right piston rod, a tooling positioning sleeve, a suspension bushing positioning seat, a left air cylinder, a left piston rod, a suspension bushing positioning frame, a suspension bushing jacking air cylinder, a bushing positioning plate sliding block, a bushing positioning plate guide rail, a suspension hole floating mandrel, a vehicle body hole floating mandrel, a connecting frame, a vehicle body hole floating mandrel sliding block, a vehicle body hole floating mandrel guide rail, a vehicle body hole floating mandrel air cylinder, a bottom shaft, the right air cylinder, the vehicle body bushing positioning seat, the tooling positioning sleeve, the left air cylinder, the bushing positioning plate guide rail, and the bottom shaft are fixed on the tooling base plate; the suspension bushing positioning seat, the suspension bushing jacking air cylinder, and the bushing positioning plate sliding block are fixed on the bushing positioning plate; the right piston rod drives the bushing positioning plate to move right along the bushing positioning plate guide rail under the action of the right air cylinder, so that the suspension hole floating mandrel on the suspension bushing positioning seat is inserted into the right suspension hole of the rear sub-frame and contacts the hole end face to realize right suspension hole positioning; the left piston rod drives the bushing positioning plate to move left along the bushing positioning plate guide rail under the action of the left air cylinder, so that the suspension hole floating mandrel on the suspension bushing positioning seat is inserted into the left suspension hole of the rear sub-frame and contacts the hole end face to realize left suspension hole positioning; the suspension bushing positioning is on the suspension bushing positioning frame, the suspension bushing positioning frame moves upward under the action of the suspension bushing jacking air cylinder, after the transverse pressing head moves into the suspension bushing inner hole, the suspension bushing positioning frame retreats to the original position with the suspension bushing jacking air cylinder, and the transverse pressing head continues to move until the suspension bushing is pressed into the suspension hole of the rear sub-frame; the vehicle body hole floating mandrel is concentric with the vehicle body bushing positioning seat, is jacked up through the connecting frame under the action of the vehicle body hole floating mandrel air cylinder, the vehicle body bushing positioning is on the vehicle body hole floating mandrel, the vehicle body hole floating mandrel is matched with the rear sub-frame vehicle body bushing hole, the lower end face of the rear sub-frame vehicle body bushing hole contacts the upper end face of the vehicle body bushing positioning seat, and the rear sub-frame is positioned on the tooling mechanism; the vehicle body hole floating mandrel moves downward along the vehicle body hole floating mandrel guide rail through the vehicle body hole floating mandrel sliding block on the connecting frame during the pressing process of the vehicle body bushing, the vehicle body hole floating mandrel is jacked up again after the vehicle body bushing pressing is completed; the tooling mechanism is positioned and connected with the tooling mounting plate on the Y-direction servo sliding table mechanism through the tooling positioning sleeve, so that the tooling mechanism moves in the Y-direction on the Y-direction servo sliding table mechanism.

[0013] In summary, the multi-direction bushing pressing equipment for the rear sub-frame has the advantages that the rear sub-frame is clamped once by the tooling mechanism, the pressing of the eight bushings in three directions on the rear sub-frame is completed through the cooperation of the Y-direction servo sliding table mechanism and the left transverse press, the right transverse press, the left vertical press, and the right vertical press, the labor cost is greatly saved, the labor intensity is reduced, and the operation cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Fig. 1 is a top view of the multi-direction bushing pressing equipment for the rear sub-frame;

[0015] Figure 2 Fig. 1 is a front view of a multi-directional bushing press-fitting equipment for a rear subframe according to the present application.

[0016] Figure 3 Fig. 2 is an axonometric view of a multi-directional bushing press-fitting equipment for a rear subframe according to the present application.

[0017] Fig. 4(a) is a schematic view of the overall structure of a left transverse press and a right transverse press of a multi-directional bushing press-fitting equipment for a rear subframe according to the present application.

[0018] Fig. 4(b) is a sectional view of a left transverse press and a right transverse press of a multi-directional bushing press-fitting equipment for a rear subframe according to the present application.

[0019] Fig. 5(a) is a schematic view of the structure of a Y-direction servo sliding table mechanism of a multi-directional bushing press-fitting equipment for a rear subframe according to the present application.

[0020] Fig. 5(b) is a schematic view of the structure of a Y-direction servo sliding table mechanism of a multi-directional bushing press-fitting equipment for a rear subframe according to the present application.

[0021] Figure 6 Fig. 6 is a schematic view of the structure of a left vertical press and a right vertical press of a multi-directional bushing press-fitting equipment for a rear subframe according to the present application.

[0022] Fig. 7(a) is a schematic view of the structure of a tooling mechanism of a multi-directional bushing press-fitting equipment for a rear subframe according to the present application.

[0023] Fig. 7(b) is a sectional view of the structure of a tooling mechanism of a multi-directional bushing press-fitting equipment for a rear subframe according to the present application.

[0024] Fig. 7(c) is a sectional view of the structure of a tooling mechanism of a multi-directional bushing press-fitting equipment for a rear subframe according to the present application. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without any creative work fall within the protection scope of the present application.

[0027] Please refer to Figures 1-3 , Figure 1 Fig. 1 is a front view of a multi-directional bushing press-fitting equipment for a rear subframe according to the present application. Figure 2 Fig. 1 is a front view of a multi-directional bushing press-fitting equipment for a rear subframe according to the present application. Figure 3It is the axial view of the rear subframe multi-direction bushing press equipment of the application. The rear subframe multi-direction bushing press equipment is composed of rack mechanism 1, left transverse press 2, Y direction servo sliding table mechanism 3, right transverse press 4, left vertical press 5, right vertical press 6, tooling mechanism 7. The tooling mechanism 7 is used for positioning and clamping of the rear subframe. The Y direction servo sliding table mechanism 3 fixed on the rack mechanism 1 drives the tooling mechanism 7 to move in Y direction. The left transverse press 2, right transverse press 4, left vertical press 5 and right vertical press 6 cooperate with each other to complete the press of 3 directions and 8 bushes on the rear subframe. The press curve of each position is displayed in real time on the industrial computer 107. Whether the press force of each position is qualified is determined to realize the online quality management of the factory.

[0028] Please continue to refer to Figure 3 , and refer to Figure 1 , the rack mechanism 1 includes guardrail 101, guard net 102, control cabinet 103, safety door 104, bottom plate 105, labeling machine 106, industrial computer 107, safety grating 108. The guardrail 101, guard net 102, safety door 104 and bottom plate 105 form the main frame of the press equipment. The safety grating 108 is arranged at the bottom side of the guardrail 101 to ensure that the equipment is in a non-working state when personnel enter. The industrial computer 107 and the labeling machine 106 are electrically connected with the control cabinet 103 fixed on the guardrail 101 to control the operation of the equipment and the printing of labels.

[0029] Please refer to Figures 4(a)~4(b), and refer to Figure 1 , Figure 4(a) shows the overall structure schematic diagram of the left transverse press and the right transverse press of the rear subframe multi-direction bushing press equipment of the application. Figure 4(b) shows the cross-sectional view of the left transverse press and the right transverse press of the rear subframe multi-direction bushing press equipment of the application. The left transverse press 2 and the right transverse press 4 have the same composition and working mode. Taking the left transverse press 2 as an example, it is described. The left transverse press 2 includes transverse servo motor 201, synchronous pulley 202, transverse lead screw 203, transverse lead screw bearing 204, transverse lead screw seat 205, transverse anti-torsion push rod 206, transverse sliding block 207, transverse guide rail 208, press seat 209, press seat sliding block 210, connecting plate 211, bracket 212, fixed plate 213, left transverse cylinder 214, press seat guide rail 215, pull block pin 216, pull block 217, clasp spring 218, transverse press head 219, transverse press head seat 220, transverse press head pin 221, transverse pressure sensor 222.

[0030] The transverse servo motor 201, synchronous pulley 202, transverse screw 203, transverse screw bearing 204 form a folding servo cylinder fixed on the press base 209. The transverse screw seat 205 fixed on the transverse torsion-resistant push rod 206 cooperates with the transverse screw 203, while the transverse torsion-resistant push rod 206 is fixedly connected with the transverse sliding block 207, which can move along the transverse guide rail 208 fixed on the press base 209.

[0031] Please continue to refer to FIG. 4 (a) ~ FIG. 4 (b), and refer to Figure 1 、 Figure 3 The transverse pressure sensor 222 and the transverse pressure head seat 220 are fixed on the transverse torsion-resistant push rod 206, the transverse pressure head 219 is installed on the transverse pressure head seat 220 through the transverse pressure head bolt 221, and the transverse pressure head 219 transmits force to the transverse pressure sensor 222 when it is pressed. The pull block 217 is fixed on the press base 209 through the pull block bolt 216 and the snap spring 218. The press base 209 is provided with a press base sliding block 210 cooperating with the press base guide rail 215 fixed on the support 212. The support 212 and the fixed frame 213 are fixed on the bottom plate 105 of the machine tool mechanism 1. The left transverse air cylinder 214 fixed on the fixed frame 213 is connected with the connecting plate 211 fixed on the lower side of the press base 209, which can drive the press base 209 to move transversely, so that the pull block 217 and the profiling groove of the tooling mechanism 7 are in the same position in the transverse direction. When the tooling mechanism 7 moves to the specified position in the Y direction, it can cover the pull block 217, and when the tooling mechanism 7 moves to other positions in the Y direction, it can make the pull block 217 exit the profiling groove.

[0032] Please refer to FIG. 5 (a) ~ FIG. 5 (b), and refer to Figure 1Figure 5(a) shows a structure top view of Y direction servo sliding table mechanism of the multi-direction bushing press-fitting equipment of the rear subframe. Figure 5(b) shows a structure left view of Y direction servo sliding table mechanism of the multi-direction bushing press-fitting equipment of the rear subframe. The Y direction servo sliding table mechanism 3 comprises Y direction servo motor 301, Y direction motor base 302, Y direction coupling 303, rear bearing base 304, Y direction screw 305, Y direction guide rail 306, tool mounting plate 307, screw nut base 308, front bearing base 309, front limit switch 310, positioning sleeve 311, rear limit switch 312, sliding table frame 313, Y direction sliding block 314. The Y direction motor base 302, Y direction guide rail 306, front limit switch 310, rear limit switch 312 are fixed on the sliding table frame 313. The Y direction screw 305 is connected with the Y direction servo motor 301 fixed on the Y direction motor base 302 through the Y direction coupling 303, and is installed on the sliding table frame 313 through the front bearing base 309 and the rear bearing base 304. The tool mounting plate 307 installed with the positioning sleeve 311 and the Y direction sliding block 314 is connected with the screw nut base 308 on the Y direction screw 305. The Y direction servo motor 301 drives the Y direction screw 305 to rotate and drives the tool mounting plate 307 to move along the Y direction guide rail 306. The front limit switch 310 and the rear limit switch 312 limit the moving range of the tool mounting plate 307.

[0033] Please refer to Figure 6 and refer to Figure 1 , Figure 6The left vertical press and the right vertical press of the multi-direction bushing press equipment of the rear subframe are shown in the structural schematic diagram. The left vertical press 5 and the right vertical press 6 are the same in composition and working mode, and the left vertical press 5 is taken as an example for illustration. The left vertical press 5 comprises a vertical servo motor 501, a vertical motor base 502, a vertical shaft coupling 503, a vertical screw 504, a vertical bearing 505, a vertical bearing seat 506, a bearing cover 507, a vertical screw seat 508, a vertical anti-torsion push rod 509, a vertical pressure sensor 510, a vertical pressure head seat 511, a vertical pressure head bolt 512, a vertical pressure head 513, a vertical anti-torsion push rod sliding block 514, a vertical anti-torsion push rod guide rail 515, a C-shaped frame 516, a spacer 517, a top shaft 518, a C-shaped frame sliding block 519, a C-shaped frame guide rail 520, a vertical frame 521, a vertical cylinder 522, a vertical piston rod 523, a vertical frame guide rail 524, a manual screw seat 525, a manual screw rod 526, a manual screw rod bearing seat 527, a position recorder 528, and a handle 529. The vertical servo motor 501 is fixed on the vertical motor base 502, and the vertical motor base 502 is fixed on the C-shaped frame 516. The vertical servo motor 501 is connected with the upper end of the vertical screw 504 through the vertical shaft coupling 503, and the vertical screw 504 is limited to rotate on the C-shaped frame 516 through the vertical bearing 505, the vertical bearing seat 506, and the bearing cover 507. The upper end of the vertical anti-torsion push rod 509 is fixedly connected with the vertical screw seat 508, and the lower end of the vertical anti-torsion push rod 509 is fixedly connected with the vertical pressure sensor 510 and the vertical pressure head seat 511. Under the rotation of the vertical screw 504, the vertical anti-torsion push rod 509 moves up and down along the vertical anti-torsion push rod guide rail 515 fixed on the C-shaped frame 516 through the vertical anti-torsion push rod sliding block 514, and the vertical pressure head 513 is connected with the vertical pressure head seat 511 through the vertical pressure head bolt 512. When the vertical pressure head 513 is forced, the force is transmitted to the vertical pressure sensor 510, so that the pressure data is collected in real time.

[0034] Please continue to refer to Figure 6 and refer to Figure 3The bottom groove of the stand 521 cooperates with the stand guide rail 524, and is fixed on the bottom plate 105 of the rack mechanism 1 through bolts. The vertical cylinder 522 is fixed on the stand 521, and drives the vertical piston rod 523 connected with the C-shaped frame 516 to move the C-shaped frame 516 up and down along the C-shaped frame guide rail 520 fixed on the stand 521. The manual screw rod 526 with the handle 529 is rotatable around the manual screw rod bearing seat 527 fixed on the bottom plate 105, and the other end cooperates with the manual screw seat 525 fixed on the stand 521. When the bolts fixing the stand 521 are loosened, rotating the handle 529 can adjust the left vertical press 5 to move left and right along the stand guide rail 524 on the bottom plate 105 of the rack mechanism 1, and the position recorder 528 can record the position of the left vertical press 5.

[0035] Please continue to refer to Figure 6 and refer to Figure 1 When the tooling mechanism 7 moves to the working position of the left vertical press 5, the vertical cylinder 522 first drives the C-shaped frame 516 to move upward on the stand 521 until the top shaft 518 on the C-shaped frame 516 contacts the bottom of the tooling mechanism 7. The C-shaped frame 516 no longer moves under the action of the vertical cylinder 522, and the vertical servo motor 501 drives the vertical press head 513 to move downward along the C-shaped frame 516 to press and assemble the body bushing. After pressing and assembling, the vertical servo motor 501 drives the vertical press head 513 to return upward along the C-shaped frame 516, and then the vertical cylinder 522 drives the C-shaped frame 516 to move downward on the stand 521 until the bottom of the C-shaped frame 516 contacts the spacer 517 fixed on the stand 521, completing a working cycle.

[0036] Please refer to FIG. 7(a)~FIG. 7(c), and refer to Figure 1 FIG. 7(a) is a top view of the tooling mechanism structure of the multi-direction bushing press equipment for the rear subframe of the application. FIG. 7(b) is a sectional view along F-F of the tooling mechanism structure of the multi-direction bushing press equipment for the rear subframe of the application. FIG. 7(c) is a sectional view along G-G of the tooling mechanism structure of the multi-direction bushing press equipment for the rear subframe of the application. The tooling mechanism 7 includes a tooling bottom plate 701, a bushing positioning plate 702, a right cylinder 703, a body bushing positioning seat 704, a right piston rod 705, a tooling positioning sleeve 706, a suspension bushing positioning seat 707, a left cylinder 708, a left piston rod 709, a suspension bushing positioning frame 711, a suspension bushing jacking cylinder 712, a bushing positioning plate sliding block 713, a bushing positioning plate guide rail 714, a suspension hole floating mandrel 715, a body hole floating mandrel 716, a connecting frame 717, a body hole floating mandrel sliding block 718, a body hole floating mandrel guide rail 719, a body hole floating mandrel cylinder 720, and a bottom shaft 721.

[0037] Please refer to FIG. 7(a)~7(c), and refer to FIG. 4(b), 5(a) in combination. The right cylinder 703, the body bushing positioning seat 704, the tool positioning sleeve 706, the left cylinder 708, the bushing positioning plate guide rail 714, and the bottom shaft 721 are all fixed on the tool bottom plate 701. The suspension bushing positioning seat 707, the suspension bushing jacking cylinder 712, and the bushing positioning plate slide block 713 are all fixed on the bushing positioning plate 702. The right piston rod 705 drives the bushing positioning plate 702 to move right along the bushing positioning plate guide rail 714 under the action of the right cylinder 703, so that the suspension hole floating mandrel 715 on the suspension bushing positioning seat 707 is inserted into the right suspension hole of the rear subframe and contacts the hole end face to realize the positioning of the right suspension hole. The left piston rod 709 drives the bushing positioning plate 702 to move left along the bushing positioning plate guide rail 714 under the action of the left cylinder 708, so that the suspension hole floating mandrel 715 on the suspension bushing positioning seat 707 is inserted into the left suspension hole of the rear subframe and contacts the hole end face to realize the positioning of the left suspension hole. The suspension bushing 710 is positioned on the suspension bushing positioning frame 711, which is driven upward by the suspension bushing jacking cylinder 712. After the transverse pressing head 219 moves into the inner hole of the suspension bushing 710, the suspension bushing positioning frame 711 is withdrawn to the original position with the suspension bushing jacking cylinder 712, and the transverse pressing head 219 continues to move until the suspension bushing 710 is pressed into the suspension hole of the rear subframe. The body hole floating mandrel 716 is concentric with the body bushing positioning seat 704, and is jacked up by the body hole floating mandrel cylinder 720 through the connecting frame 717. The body bushing is positioned on the body hole floating mandrel 716, which cooperates with the body bushing hole of the rear subframe. The lower end face of the body bushing hole of the rear subframe contacts the upper end face of the body bushing positioning seat 704, realizing the positioning of the rear subframe on the tool mechanism 7. During the pressing process of the body bushing, the body hole floating mandrel 716 moves downward along the body hole floating mandrel guide rail 719 through the body hole floating mandrel slide block 718 on the connecting frame 717. After the body bushing pressing is completed, the body hole floating mandrel 716 is jacked up again. The tool mechanism 7 is positioned and connected with the tool mounting plate 307 on the Y-direction servo sliding table mechanism 3 through the tool positioning sleeve 706, so as to realize the Y-direction movement of the tool mechanism 7 on the Y-direction servo sliding table mechanism 3.

[0038] In order to more directly disclose the technical solutions of the present application and highlight the beneficial effects of the present application, the structure and working principle of the multi-direction bushing press-fitting equipment for the rear subframe will be described in conjunction with specific embodiments. In actual use, the operator positions the rear subframe on the tooling mechanism 7 and then starts the press. The Y-direction servo sliding table mechanism 3 drives the rear subframe on the tooling mechanism 7 to move in the Y-direction to a specific position. The left transverse press 2 moves a certain distance to the right under the drive of the left transverse cylinder 214. At this time, the pull block 217 of the left transverse press 2 is aligned with the groove of the bushing positioning plate 702. Then the Y-direction servo sliding table mechanism 3 drives the rear subframe on the tooling mechanism 7 to move in the Y-direction to align the left side suspension hole of the rear subframe with the left transverse press 2. The left transverse cylinder 214 drives the pull block 217 to pull the bushing positioning plate 702 to the left to contact the suspension bushing positioning seat 707 with the suspension hole of the rear subframe. The transverse pressing head 219 of the left transverse press 2 moves to the right to pass the suspension bushing 710 on the suspension bushing positioning frame 711 on the transverse pressing head 219. The suspension bushing positioning frame 711 is retracted to the original position under the drive of the suspension bushing lifting cylinder 712. The transverse pressing head 219 continues to move to the right until the suspension bushing 710 is pressed into the suspension hole of the rear subframe. The transverse pressing head 219 returns to the tooling mechanism 7 and continues to move a certain distance in the Y-direction, so that the pull block 217 of the left transverse press 2 exits the groove of the bushing positioning plate 702 and returns to the original position. The bushing positioning plate 702 returns to the original position under the drive of the right cylinder 703. The Y-direction servo sliding table mechanism 3 drives the rear subframe on the tooling mechanism 7 to continue to move to the positions of the left vertical press 5 and the right vertical press 6, and completes the press-fitting of the body bushing.

[0039] When the press-fitting of the body bushing is completed, the tooling mechanism 7 returns to a specific position in the Y-direction. Similar to the left transverse press 2, the press-fitting of the right suspension bushing is completed. Finally, the tooling mechanism 7 returns to the original position in the Y-direction, and the press-fitting of the eight bushings in three directions of the rear subframe is completed.

[0040] As a person skilled in the art, it is easily known that the multi-direction bushing press-fitting equipment for the rear subframe has the advantages that the rear subframe is clamped once by the tooling mechanism 7, and the press-fitting of the eight bushings in three directions of the rear subframe is completed under the cooperation of the Y-direction servo sliding table mechanism 3 and the left transverse press 2, the right transverse press 4, the left vertical press 5 and the right vertical press 6. Therefore, the labor cost is greatly saved, the labor intensity is reduced, and the operating cost is reduced.

[0041] In summary, the multi-direction bushing press-fitting equipment for the rear subframe has the advantages that the rear subframe is clamped once by the tooling mechanism 7, and the press-fitting of the eight bushings in three directions of the rear subframe is completed under the cooperation of the Y-direction servo sliding table mechanism 3 and the left transverse press 2, the right transverse press 4, the left vertical press 5 and the right vertical press 6. Therefore, the labor cost is greatly saved, the labor intensity is reduced, and the operating cost is reduced.

[0042] Those skilled in the art will appreciate that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Accordingly, it is to be understood that the application is intended to cover all such modifications and variations as fall within the scope of the claims and their equivalents.

Claims

1. A multi-directional bushing pressing device for a rear subframe, characterized in that, The multi-directional bushing pressing equipment for the rear subframe consists of a frame mechanism, a left transverse press, a Y-axis servo slide mechanism, a right transverse press, a left vertical press, a right vertical press, and a tooling mechanism. The tooling mechanism is used for positioning and clamping the rear subframe. The Y-axis servo slide mechanism, fixed to the frame mechanism, drives the tooling mechanism to move in the Y-axis. In coordination with the left transverse press, right transverse press, left vertical press, and right vertical press, the tooling mechanism completes the pressing of eight bushings in three directions on the subframe, and displays the pressing curves at each position on the industrial control computer in real time. The left transverse press and right transverse press have the same composition and operating mode, as do the left vertical press and right vertical press. The left transverse press includes a transverse servo motor, a synchronous pulley, a transverse lead screw, a transverse lead screw bearing, and a press. The machine includes a press base, press base slider, connecting plate, bracket, fixing plate, transverse cylinder, press base guide rail, pull block pin, pull block, snap ring, and transverse press head. The transverse servo motor, synchronous pulley, transverse lead screw, and transverse lead screw bearing form a reversible servo electric cylinder fixed on the press base. The pull block is fixed on the press base by the pull block pin and snap ring. The press base slider is installed under the press base and cooperates with the press base guide rail fixed on the bracket. The bracket and fixing frame are fixed on the base plate of the machine frame mechanism. The transverse cylinder fixed on the fixing frame is connected to the connecting plate fixed on the lower side of the press base, which can drive the press base to move laterally, so that the pull block and the contour groove of the tooling mechanism are in the same position laterally. When the tooling mechanism moves along the Y direction to a designated position, it can lock the pull block. When the tooling mechanism moves along the Y direction to other positions, it can make the pull block exit the contour groove.

2. The multi-directional bushing pressing equipment for the rear subframe as described in claim 1, characterized in that, The frame structure includes a guardrail, a safety net, a control cabinet, a safety door, a base plate, a labeling machine, an industrial control computer, and a safety light curtain. The guardrail, safety net, safety door, and base plate form the main frame of the pressing equipment. The safety light curtain is arranged on the bottom side of the guardrail. The industrial control computer and the labeling machine are electrically connected to the control cabinet fixed on the guardrail.

3. The multi-directional bushing pressing equipment for the rear subframe as described in claim 1, characterized in that, The left transverse press further includes a transverse screw seat, a transverse anti-torsion push rod, a transverse slider, a transverse guide rail, a transverse press head seat, a transverse press head pin, and a transverse pressure sensor. The transverse screw seat, fixed on the transverse anti-torsion push rod, cooperates with the transverse screw. At the same time, the transverse anti-torsion push rod is fixedly connected to the transverse slider and can move along the transverse guide rail fixed on the press base. The transverse pressure sensor and the transverse press head seat are fixed on the transverse anti-torsion push rod. The transverse press head is installed on the transverse press head seat through the transverse press head pin. When the transverse press head is pressed, it transmits the force to the transverse pressure sensor.

4. The multi-directional bushing pressing equipment for the rear subframe as described in claim 1, characterized in that, The Y-axis servo slide mechanism includes a Y-axis servo motor, a Y-axis motor mount, a Y-axis coupling, a rear bearing mount, a Y-axis lead screw, a Y-axis guide rail, a tooling mounting plate, a lead screw nut, a front bearing mount, a front limit switch, a positioning sleeve, a rear limit switch, a slide frame, and a Y-axis slider. The Y-axis motor mount, Y-axis guide rail, front limit switch, and rear limit switch are fixed on the slide frame. The Y-axis lead screw is connected to the Y-axis servo motor fixed on the Y-axis motor mount via the Y-axis coupling and is mounted on the slide frame via the front and rear bearing mounts. The tooling mounting plate, which has a positioning sleeve and a Y-axis slider, is connected to the lead screw nut on the Y-axis lead screw. The Y-axis servo motor drives the Y-axis lead screw to rotate, causing the tooling mounting plate to move along the Y-axis guide rail. The front and rear limit switches limit the movement range of the tooling mounting plate.

5. The multi-directional bushing pressing equipment for the rear subframe as described in claim 1, characterized in that, The left vertical press includes a vertical servo motor, a vertical motor base, a vertical coupling, a vertical lead screw, a vertical bearing, a vertical bearing housing, a bearing cover, a vertical lead screw seat, a vertical anti-torsion push rod, a vertical pressure sensor, a vertical pressure head seat, a vertical pressure head pin, a vertical pressure head, a vertical anti-torsion push rod slider, a vertical anti-torsion push rod guide rail, a C-frame, a spacer, a top shaft, a C-frame slider, a C-frame guide rail, a vertical frame, a vertical cylinder, a vertical piston rod, a vertical frame guide rail, a manual lead screw seat, and a manual lead screw. The system includes a manual lead screw bearing housing, a position recorder, and a handle. The vertical servo motor is fixed on a vertical motor base, which is fixed on a C-frame. The vertical servo motor is connected to the upper end of the vertical lead screw via a vertical coupling. The vertical lead screw is restricted to rotation on the C-frame by a vertical bearing, a vertical bearing housing, and a bearing cover. The upper end of the vertical anti-torsion push rod is fixedly connected to the vertical lead screw housing, and the lower end of the vertical anti-torsion push rod is fixedly connected to the vertical pressure sensor and the vertical pressure head housing. Driven by the rotation of the lead screw, the vertical anti-torsion push rod moves up and down along the vertical anti-torsion push rod guide rail fixed on the C-frame via the vertical anti-torsion push rod slider. The vertical pressure head is connected to the vertical pressure head seat via the vertical pressure head pin. When the vertical pressure head is subjected to force, it transmits the force to the vertical pressure sensor, thereby collecting pressure data in real time. The groove at the bottom of the upright frame cooperates with the upright frame guide rail and is fixed to the base plate of the frame mechanism by bolts. A vertical cylinder is fixed on the upright frame. The vertical cylinder drives the vertical piston rod fixed to the C-frame, realizing the vertical movement of the C-frame along the C-frame guide rail fixed on the upright frame via the C-frame slider. One end of the manual lead screw with a handle rotates around the manual lead screw bearing seat fixed on the base plate, and the other end cooperates with the manual lead screw seat fixed on the upright frame. Loosening the bolts fixing the upright frame and turning the handle can realize the left and right position adjustment of the vertical press along the upright frame guide rail on the base plate of the frame mechanism. The position recorder can record the position of the left vertical press.

6. The multi-directional bushing pressing equipment for the rear subframe as described in claim 1, characterized in that, The tooling mechanism includes a tooling base plate, a bushing positioning plate, a right cylinder, a body bushing positioning seat, a right piston rod, a tooling positioning sleeve, a suspension bushing positioning seat, a left cylinder, a left piston rod, a suspension bushing positioning frame, a suspension bushing lifting cylinder, a bushing positioning plate slider, a bushing positioning plate guide rail, a suspension hole floating mandrel, a body hole floating mandrel, a connecting frame, a body hole floating mandrel slider, a body hole floating mandrel guide rail, a body hole floating mandrel cylinder, and a bottom shaft. The right cylinder, body bushing positioning seat, tooling positioning sleeve, left cylinder, bushing positioning plate guide rail, and bottom shaft are all fixed. On the tooling base plate; the suspension bushing positioning seat, suspension bushing lifting cylinder, and bushing positioning plate slider are all fixed on the bushing positioning plate; under the action of the right cylinder, the right piston rod drives the bushing positioning plate to move to the right along the bushing positioning plate guide rail, so that the floating mandrel of the suspension hole on the suspension bushing positioning seat is inserted into the right suspension hole of the rear subframe and contacts the end face of the hole to achieve positioning of the right suspension hole; under the action of the left cylinder, the left piston rod drives the bushing positioning plate to move to the left along the bushing positioning plate guide rail, so that the floating mandrel of the suspension hole on the suspension bushing positioning seat is inserted into the left suspension hole of the rear subframe and contacts the end face of the hole to achieve positioning of the right suspension hole; The contact hole end face positions the left suspension hole; the suspension bushing is positioned on the suspension bushing positioning bracket, which moves upward under the action of the suspension bushing lifting cylinder. After the lateral pressure head moves and passes through the inner hole of the suspension bushing, the suspension bushing positioning bracket retracts downward to its original position with the suspension bushing lifting cylinder. The lateral pressure head continues to move until the suspension bushing is pressed into the rear subframe suspension hole; the body hole floating mandrel is concentric with the body bushing positioning seat, and is lifted by the body hole floating mandrel cylinder through the connecting bracket, positioning the body bushing on the body hole floating mandrel. The rear subframe body bushing hole mates with the lower end face of the rear subframe body bushing hole and contacts the upper end face of the body bushing positioning seat, thus positioning the rear subframe on the tooling mechanism. During the compression of the body bushing, the floating mandrel of the body hole moves downward along the floating mandrel guide rail of the body hole through the floating mandrel slider on the connecting frame. After the body bushing is pressed, the floating mandrel of the body hole is lifted up again. The tooling mechanism is positioned and connected to the tooling mounting plate on the Y-axis servo slide mechanism through the tooling positioning sleeve, thereby realizing the Y-axis movement of the tooling mechanism on the Y-axis servo slide mechanism.

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