Automotive hade rear control arm assembly device and method

Abstract

This invention relates to the field of automotive parts assembly technology, specifically to an assembly device and method for a HADE rear control arm. The device includes a worktable, two linear drive mechanisms, two rotary drive mechanisms, a left control arm positioning mechanism, a right control arm positioning mechanism, a three-station guide base, two side cylinders, a middle cylinder, two side nut positioning blocks, a middle nut positioning block, a dual-gun adjustment mechanism, and two servo electric guns. During operation, the left and right control arms are respectively positioned and clamped, and the side nuts and middle nuts are placed into their corresponding positioning blocks. The linear drive mechanisms and rotary drive mechanisms operate synchronously, screwing the control arms into the side nuts for pre-tightening; then pre-tightening them with the middle nut; finally, the servo electric guns tighten the side nuts to the set torque. This solves the problems of low efficiency, inaccurate torque control, and poor assembly consistency in existing technologies.

Description

Technical Field

[0001] This invention relates to the field of automotive parts assembly technology, and in particular to an assembly device and method for a HADE rear control arm of an automobile. Background Technology

[0002] In automotive chassis systems, the HADE rear control arm is a critical guiding and force-transmitting component connecting the wheels to the subframe. Its assembly quality directly affects the vehicle's handling stability, driving safety, and the accuracy of four-wheel alignment parameters. The assembly process of the rear control arm typically involves tightening multiple nuts (such as M18 nuts), requiring precise and consistent nut torque.

[0003] Currently, the assembly of the HADE rear control arm is mainly done manually using simple tooling. Operators first manually place the left and right control arms and the middle nut, then use a regular wrench or a torque wrench to tighten the two M18 nuts respectively. This method has the following prominent problems: First, manual tightening is time-consuming and inefficient, making it difficult to meet the pace of mass production; second, manual operation is prone to unstable nut tightening torque due to fatigue or differences in experience, resulting in insufficient torque (risk of loosening) or excessive torque (damage to threads or control arms). Summary of the Invention

[0004] The purpose of this invention is to provide an assembly device and method for the rear control arm of an automobile HADE, which aims to solve the problems of low efficiency, inaccurate torque control, and poor assembly consistency in the prior art.

[0005] To achieve the above objectives, the present invention provides an automotive HADE rear control arm assembly device, comprising a worktable, two linear drive mechanisms, two rotary drive mechanisms, a left control arm positioning mechanism, a right control arm positioning mechanism, a three-position guide base, two side cylinders, a middle cylinder, two side nut positioning blocks, a middle nut positioning block, a dual-gun adjustment mechanism, and two servo electric guns.

[0006] Two linear drive mechanisms are symmetrically arranged on the left and right sides of the top of the worktable; each linear drive mechanism has a rotary drive mechanism on its top; the left control arm positioning mechanism is located at the end of the left rotary drive mechanism; the right control arm positioning mechanism is located at the end of the right rotary drive mechanism; the three-position guide base is fixedly arranged on the top of the worktable and located between the two linear drive mechanisms; two side cylinders are fixedly arranged on the three-position guide base; the middle cylinder is fixedly arranged on the three-position guide base; two side nut positioning blocks are slidably arranged in the three-position guide base and are fixedly connected to the output ends of the two side cylinders respectively; the middle nut positioning block is slidably arranged in the three-position guide base and is fixedly connected to the output end of the middle cylinder; the dual-gun adjustment mechanism is arranged on the top of the worktable and located behind the three-position guide base; two servo electric guns are arranged on the dual-gun adjustment mechanism; the servo electric guns are used to tighten the side nuts.

[0007] The left control arm positioning mechanism includes a left positioning block, two left mounting shafts, two left clamping blocks, two left engaging blocks, a left mounting sleeve, a first left cylinder, a left pressing block, two second left cylinders, two left insert blocks, and a left tension spring.

[0008] The left positioning block is disposed at the end of the rotary drive mechanism on the left side; the two left mounting shafts are respectively fixedly disposed within the left positioning block; a left clamping block is rotatably disposed on each left mounting shaft; a left engagement block is fixedly disposed at the bottom end of each left clamping block; the left mounting sleeve is fixedly disposed at the bottom of the left positioning block; the first left cylinder is fixedly disposed on one side of the left mounting sleeve; the left extrusion block is slidably disposed within the left mounting sleeve and is fixedly connected to the output end of the first left cylinder;

[0009] The left extrusion block has two symmetrical left sliding grooves; the two left engagement blocks are respectively located in the two left sliding grooves; when the left extrusion block is driven to slide, it can extrude the two left engagement blocks to both sides, so as to drive the bottom ends of the two left clamping blocks away from each other, thereby making the top ends of the two left clamping blocks approach each other.

[0010] Two second left cylinders are fixedly mounted on one side of the left positioning block; two left insert blocks are slidably mounted on the left positioning block and are fixedly connected to the output ends of the two second left cylinders respectively; the two ends of the left tension spring are fixedly connected to the bottom ends of the two left clamping blocks respectively.

[0011] The right control arm positioning mechanism includes a right positioning block, two right mounting shafts, two right clamping blocks, two right engaging blocks, a right mounting sleeve, a first right cylinder, a right pressing block, two second right cylinders, two right insert blocks, and a right tension spring.

[0012] The right positioning block is disposed at the end of the rotary drive mechanism on the right side; the two right mounting shafts are respectively fixedly disposed within the right positioning block; a right clamping block is rotatably disposed on each right mounting shaft; a right engagement block is fixedly disposed at the bottom end of each right clamping block; the right mounting sleeve is fixedly disposed at the bottom of the right positioning block; the first right cylinder is fixedly disposed on one side of the right mounting sleeve; the right extrusion block is slidably disposed within the right mounting sleeve and is fixedly connected to the output end of the first right cylinder.

[0013] The right extrusion block has two symmetrical right sliding grooves; the two right engagement blocks are respectively located in the two right sliding grooves; when the right extrusion block is driven to slide, it can extrude the two right engagement blocks to both sides, so as to drive the bottom ends of the two right clamping blocks away from each other, thereby making the top ends of the two right clamping blocks approach each other.

[0014] Two second right cylinders are fixedly mounted on one side of the right positioning block; two right insert blocks are slidably mounted on the right positioning block and are fixedly connected to the output ends of the two second right cylinders respectively; the two ends of the right tension spring are fixedly connected to the bottom ends of the two right clamping blocks respectively.

[0015] The dual-gun adjustment mechanism includes a bracket, two front and rear guide rails, front and rear sliding seats, two left and right guide rails, two left and right sliding seats, front and rear cylinders, and two left and right cylinders.

[0016] The bracket is fixedly mounted on the top of the workbench; the two front and rear guide rails are respectively fixedly mounted on the top of the bracket; the front and rear sliding seats are slidably mounted on the two front and rear guide rails; the two left and right guide rails are respectively fixedly mounted on the top of the front and rear sliding seats; each of the left and right sliding seats is slidably mounted on the two left and right guide rails; the two left and right sliding seats are respectively fixedly connected to the two servo electric guns; the front and rear cylinders are fixedly mounted on the bracket, and the output ends of the front and rear cylinders are fixedly connected to the front and rear sliding seats; the two left and right cylinders are respectively fixedly mounted on the top of the front and rear sliding seats; the output ends of the two left and right cylinders are respectively fixedly connected to the two left and right sliding seats.

[0017] The left control arm positioning mechanism also includes a left proximity sensor;

[0018] The left proximity sensor is fixedly mounted on the side of the left positioning block.

[0019] The right control arm positioning mechanism also includes a right proximity sensor;

[0020] The right proximity sensor is fixedly mounted on the side of the right positioning block.

[0021] The HADE rear control arm assembly device for automobiles also includes two side nut proximity sensors and a middle nut proximity sensor.

[0022] The two side nut proximity sensors are fixedly mounted on the two side nut positioning blocks; the middle nut proximity sensor is fixedly mounted on the middle nut positioning block.

[0023] The vehicle HADE rear control arm assembly device also includes two safety light curtain components;

[0024] The two safety light curtain components are respectively fixedly installed on the left and right sides of the top of the workbench.

[0025] The automotive HADE rear control arm assembly also includes a top frame and a lighting fixture;

[0026] The top frame is fixedly mounted on the top of the workbench; the lighting lamp is fixedly mounted on the top frame.

[0027] The present invention also provides a method for assembling a HADE rear control arm for automobiles, comprising the following steps:

[0028] The left control arm and the right control arm are placed on the left control arm positioning mechanism and the right control arm positioning mechanism respectively, and the left control arm and the right control arm are clamped and fixed by the left control arm positioning mechanism and the right control arm positioning mechanism.

[0029] Place the two side nuts into the two side nut positioning blocks respectively, and place the middle nut into the middle nut positioning block;

[0030] Simultaneously start two linear drive mechanisms and two rotary drive mechanisms, so that the two linear drive mechanisms drive the left control arm and the right control arm to move towards the middle, while the two rotary drive mechanisms drive the left control arm and the right control arm to rotate, so that the left control arm and the right control arm are screwed into the corresponding side nuts respectively, until they are pre-tightened to the set depth;

[0031] After pre-tightening, the side cylinder drives the side nut positioning block to descend;

[0032] Continue to pre-tighten the left and right control arms with the middle nut through the linear drive mechanism and the rotary drive mechanism. After the pre-tightening is in place, the middle cylinder drives the middle nut positioning block to descend.

[0033] The positions of the two servo electric guns are adjusted by the dual-gun adjustment mechanism so that the two servo electric guns are aligned with the two side nuts respectively. The servo electric guns are then activated to finally tighten the two side nuts to the set torque.

[0034] This invention relates to an assembly device and method for a vehicle HADE rear control arm.

[0035] The operator places the left and right control arms on the left and right control arm positioning mechanisms, respectively, and then places the two side nuts into the two side nut positioning blocks and the middle nut into the middle nut positioning block. The operator then presses the two-hand start button. At this time, the two linear drive mechanisms start synchronously, driving the left and right control arms to move towards the center; simultaneously, the two rotary drive mechanisms start synchronously, driving the left and right control arms to rotate. Under the combined motion of movement and rotation, the ends of the left and right control arms are screwed into the corresponding side nuts. After pre-tightening to the set depth, the side cylinder drives the side nut positioning block to descend. Subsequently, the combined motion of the linear drive mechanism and the rotary drive mechanism continues to pre-tighten the left and right control arms with the middle nut. After pre-tightening to the desired depth, the middle cylinder drives the middle nut positioning block to descend. Finally, the dual-gun adjustment mechanism drives the two servo electric guns to move to the position aligned with the two side nuts, and the servo electric guns are activated to finally tighten the two side nuts to the set torque. This solves the problems of low efficiency, inaccurate torque control, and poor assembly consistency in existing technologies. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0037] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention.

[0038] Figure 2 This is a schematic diagram of the control arm after the HADE is assembled according to the present invention.

[0039] Figure 3 yes Figure 2 A magnified view of detail A.

[0040] Figure 4 yes Figure 2 A magnified view of detail B.

[0041] Figure 5 yes Figure 2 A magnified view of detail C.

[0042] Figure 6 This is a schematic diagram of the left control arm positioning mechanism of the present invention.

[0043] Figure 7 This is a structural schematic diagram of the left control arm positioning mechanism of the present invention from another angle.

[0044] Figure 8 This is a schematic diagram of the structure of the left mounting shaft, left clamping block, left engaging block, left pressing block and left tension spring of the present invention.

[0045] Figure 9 This is a schematic diagram of the right control arm positioning mechanism of the present invention.

[0046] Figure 10 This is a structural schematic diagram of the right control arm positioning mechanism of the present invention from another angle.

[0047] Figure 11 This is a schematic diagram of the structure of the right mounting shaft, right clamping block, right engaging block, right pressing block and right tension spring of the present invention.

[0048] Figure 12 This is a schematic diagram of the structure of the three-position guide base, side nut positioning block, and middle nut positioning block of the present invention.

[0049] Figure 13 This is a schematic diagram of the dual-gun adjustment mechanism and servo electric gun of the present invention.

[0050] Figure 14 This is a schematic diagram of the dual-gun adjustment mechanism and servo electric gun of the present invention from another angle.

[0051] Figure 15 This is a flowchart illustrating the second embodiment of the present invention.

[0052] 1-Workbench, 2-Linear drive mechanism, 3-Rotary drive mechanism, 4-Left control arm positioning mechanism, 5-Right control arm positioning mechanism, 6-Three-position guide base, 7-Side cylinder, 8-Intermediate cylinder, 9-Side nut positioning block, 10-Intermediate nut positioning block, 11-Dual gun adjustment mechanism, 12-Servo electric gun, 13-Side nut proximity sensor, 14-Intermediate nut proximity sensor, 15-Safety light curtain component, 16-Top frame, 17-Lighting lamp, 401-Left positioning block, 402-Left mounting shaft, 403-Left clamping block, 404-Left engaging block, 405-Left mounting sleeve, 406-First left cylinder, 407-Left pressing block, 408-Second left cylinder, 409-Left insertion block, 410 -Left proximity sensor, 411-Left tension spring, 40701-Left slide groove, 501-Right positioning block, 502-Right mounting shaft, 503-Right clamping block, 504-Right engaging block, 505-Right mounting sleeve, 506-First right cylinder, 507-Right pressing block, 508-Second right cylinder, 509-Right insert block, 510-Right proximity sensor, 511-Right tension spring, 50701-Right slide groove, 1101-Bracket, 1102-Front and rear guide rails, 1103-Front and rear sliding seats, 1104-Left and right guide rails, 1105-Left and right sliding seats, 1106-Front and rear cylinders, 1107-Left and right cylinders, 100-Left control arm, 200-Right control arm, 300-Side nut, 400-Intermediate nut. Detailed Implementation

[0053] The first embodiment of this application is as follows:

[0054] Please see Figures 1-14 ,in, Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention. Figure 2 This is a schematic diagram of the control arm after the HADE is assembled according to the present invention. Figure 3 yes Figure 2 A magnified view of detail A. Figure 4 yes Figure 2 A magnified view of detail B. Figure 5 yes Figure 2 A magnified view of detail C. Figure 6 This is a schematic diagram of the left control arm positioning mechanism of the present invention. Figure 7 This is a structural schematic diagram of the left control arm positioning mechanism of the present invention from another angle. Figure 8 This is a schematic diagram of the structure of the left mounting shaft, left clamping block, left engaging block, left pressing block and left tension spring of the present invention. Figure 9 This is a schematic diagram of the right control arm positioning mechanism of the present invention. Figure 10 This is a structural schematic diagram of the right control arm positioning mechanism of the present invention from another angle. Figure 11 This is a schematic diagram of the structure of the right mounting shaft, right clamping block, right engaging block, right pressing block and right tension spring of the present invention. Figure 12 This is a schematic diagram of the structure of the three-position guide base, side nut positioning block, and middle nut positioning block of the present invention. Figure 13 This is a schematic diagram of the dual-gun adjustment mechanism and servo electric gun of the present invention. Figure 14 This is a schematic diagram of the dual-gun adjustment mechanism and servo electric gun of the present invention from another angle.

[0055] This invention provides an assembly device for a car HADE rear control arm: including a workbench 1, two linear drive mechanisms 2, two rotary drive mechanisms 3, a left control arm positioning mechanism 4, a right control arm positioning mechanism 5, a three-position guide base 6, two side cylinders 7, a middle cylinder 8, two side nut positioning blocks 9, a middle nut positioning block 10, a dual-gun adjustment mechanism 11, and two servo electric guns 12; the left control arm positioning mechanism 4 includes a left positioning block 401, two left mounting shafts 402, and two left clamps. The right control arm positioning mechanism 5 includes a right positioning block 501, two left engagement blocks 404, a left mounting sleeve 405, a first left cylinder 406, a left compression block 407, two second left cylinders 408, two left insert blocks 409, and a left tension spring 411; the left compression block 407 has two symmetrical left sliding grooves 40701; the right control arm positioning mechanism 5 includes a right positioning block 501, two right mounting shafts 502, two right clamping blocks 503, two right engagement blocks 504, a right mounting sleeve 505, a first right cylinder 506, and a right compression block. 507, two second right cylinders 508, two right insert blocks 509, and a right tension spring 511; the right extrusion block 507 has two symmetrical right sliding grooves 50701; the dual-gun adjustment mechanism 11 includes a bracket 1101, two front and rear guide rails 1102, front and rear sliding seats 1103, two left and right guide rails 1104, two left and right sliding seats 1105, front and rear cylinders 1106, and two left and right cylinders 1107; the left control arm positioning mechanism 4 also includes a left proximity sensor 410; the right control arm positioning mechanism 5 also includes a right proximity sensor 510; the automotive HADE rear control arm assembly device also includes two side nut proximity sensors 13 and a middle nut proximity sensor 14; the automotive HADE rear control arm assembly device also includes two safety light curtain components 15; the automotive HADE rear control arm assembly device also includes a top frame 16 and a lighting lamp 17; the aforementioned solution solves the problems of low efficiency, inaccurate torque control, and poor assembly consistency in the prior art.

[0056] It should be noted that the HADE rear control arm of the car consists of a left control arm 100, a right control arm 200, two side nuts 300 (M18 nuts), and a middle nut 400. The left control arm 100 has a U-shaped connector at its end, with two connecting holes. The right control arm 200 has a cylindrical connector at its end. See details... Figures 3-5 .

[0057] Furthermore, the two linear drive mechanisms 2 are symmetrically arranged on the left and right sides of the top of the worktable 1; each linear drive mechanism 2 is topped with a rotary drive mechanism 3; the left control arm positioning mechanism 4 is located at the end of the left rotary drive mechanism 3; the right control arm positioning mechanism 5 is located at the end of the right rotary drive mechanism 3; the three-position guide base 6 is fixedly arranged on the top of the worktable 1 and located between the two linear drive mechanisms 2; the two side cylinders 7 are fixedly arranged on the three-position guide base 6; the middle cylinder 8 is fixedly mounted on the three-position guide base 6; the two side nut positioning blocks 9 are slidably mounted in the three-position guide base 6 and are respectively fixedly connected to the output ends of the two side cylinders 7; the middle nut positioning block 10 is slidably mounted in the three-position guide base 6 and is fixedly connected to the output end of the middle cylinder 8; the dual-gun adjustment mechanism 11 is mounted on the top of the workbench 1 and is located on the rear side of the three-position guide base 6; the two servo electric guns 12 are mounted on the dual-gun adjustment mechanism 11; the servo electric guns 12 are used to tighten the side nuts 300.

[0058] In this embodiment, the workbench 1 has an electrical control box on its back, an air supply assembly on its side, and a solenoid valve assembly inside. The three-position guide base 6 has a two-hand start button box and a two-hand start button in front of it. The linear drive mechanism 2 is preferably a ball screw slider mechanism driven by a servo motor, and the rotary drive mechanism 3 is preferably a rotating shaft mechanism driven by a servo motor and belt drive, driving the left control arm positioning mechanism 4 or the right control arm positioning mechanism 5 to rotate. The electrical control box provides power and control for the entire machine, the air supply assembly provides compressed air to all cylinders, and the solenoid valve assembly controls the charging and discharging sequence of each cylinder. The two-hand start button box and the two-hand start button are for simultaneous pressing by the operator with both hands to start the equipment, preventing accidents during single-handed operation.

[0059] The linear drive mechanism 2 drives the left control arm positioning mechanism 4 or the right control arm positioning mechanism 5 to move in the left-right direction (i.e., towards the three-position guide base 6). The rotary drive mechanism 3 drives the left control arm positioning mechanism 4 or the right control arm positioning mechanism 5 to rotate around its axis; the left control arm positioning mechanism 4 is used to position and clamp the left control arm 100, and the right control arm positioning mechanism 5 is used to position and clamp the right control arm 200; the side nut positioning block 9 is used to position and place the side nut 300, so that the side nut 300 remains stable and cannot rotate; the middle nut positioning block 10 is used to position and place the middle nut 400, so that the middle nut 400 remains stable and cannot rotate.

[0060] The operator places the left control arm 100 and the right control arm 200 on the left control arm positioning mechanism 4 and the right control arm positioning mechanism 5 respectively, places the two side nuts 300 into the two side nut positioning blocks 9, and places the middle nut 400 into the middle nut positioning block 10. Then, the operator presses the two-hand start button. At this time, the two linear drive mechanisms 2 start synchronously, driving the left control arm 100 and the right control arm 200 to move towards the center; simultaneously, the two rotary drive mechanisms 3 start synchronously, driving the left control arm 100 and the right control arm 200 to rotate. Under the combined motion of movement and rotation, the ends of the left control arm 100 and the right control arm 200 are screwed into the corresponding side nuts 300. After pre-tightening to the set depth, the side cylinder 7 drives the side nut positioning block 9 to descend. Subsequently, the left control arm 100 and right control arm 200 are pre-tightened with the middle nut 400 through the combined motion of the linear drive mechanism 2 and the rotary drive mechanism 3. After pre-tightening, the middle cylinder 8 drives the middle nut positioning block 10 to descend. Finally, the dual-gun adjustment mechanism 11 drives the two servo electric guns 12 to move to the position aligned with the two side nuts 300, and activates the servo electric guns 12 to finally tighten the two side nuts 300 to the set torque. This solves the problems of low efficiency, inaccurate torque control, and poor assembly consistency in the prior art.

[0061] Furthermore, the left positioning block 401 is disposed at the end of the rotary drive mechanism 3 on the left side; two left mounting shafts 402 are respectively fixedly disposed within the left positioning block 401; a left clamping block 403 is rotatably disposed on each left mounting shaft 402; a left engaging block 404 is fixedly disposed at the bottom end of each left clamping block 403; the left mounting sleeve 405 is fixedly disposed at the bottom of the left positioning block 401; the first left cylinder 406 is fixedly disposed on one side of the left mounting sleeve 405; the left pressing block 407 is slidably disposed within the left mounting sleeve 405 and is fixedly connected to the output end of the first left cylinder 406.

[0062] The left extrusion block 407 has two symmetrical left sliding grooves 40701; the two left engagement blocks 404 are respectively located in the two left sliding grooves 40701; when the left extrusion block 407 is driven to slide, it can extrude the two left engagement blocks 404 to both sides, so as to drive the bottom ends of the two left clamping blocks 403 away from each other, thereby making the top ends of the two left clamping blocks 403 approach each other.

[0063] Two second left cylinders 408 are fixedly mounted on one side of the left positioning block 401; two left insert blocks 409 are slidably mounted on the left positioning block 401 and are fixedly connected to the output ends of the two second left cylinders 408 respectively; the two ends of the left tension spring 411 are fixedly connected to the bottom ends of the two left clamping blocks 403 respectively.

[0064] In this embodiment, the left positioning block 401 is used to support the left control arm 100, and its internal positioning groove provides a coarse positioning reference for the left control arm 100. Two left mounting shafts 402 are respectively fixedly disposed within the left positioning block 401, providing rotational support points for the two left clamping blocks 403. A left clamping block 403 is rotatably disposed on each left mounting shaft 402, allowing the left clamping block 403 to swing around the left mounting shaft 402. A left engaging block 404 is fixedly disposed at the bottom end of each left clamping block 403, serving as a force-bearing component and receiving the pushing force from the left pressing block 407. The left mounting sleeve 405 is fixedly disposed at the bottom of the left positioning block 401, providing a sliding guide cavity for the left pressing block 407. The first left cylinder 406 is fixedly disposed on one side of the left mounting sleeve 405, serving as a power source for driving the left pressing block 407. The left extrusion block 407 is slidably disposed in the left mounting sleeve 405 and is fixedly connected to the output end of the first left cylinder 406. Therefore, when the first left cylinder 406 extends or retracts, the left extrusion block 407 slides linearly in the left mounting sleeve 405.

[0065] The left pressing block 407 has two symmetrical left sliding grooves 40701, and the two left engaging blocks 404 are respectively located in the two left sliding grooves 40701. The shape of the left sliding grooves 40701 is such that when the left pressing block 407 slides axially, the inner sidewall of the left sliding groove 40701 pushes the left engaging blocks 404 to both sides. Therefore, when the left pressing block 407 is driven to slide, it can press the two left engaging blocks 404 to both sides, thereby causing the bottom ends of the two left clamping blocks 403 to move away from each other, and thus causing the top ends of the two left clamping blocks 403 to move closer together. The left tension spring 411 provides a restoring force to the two left clamping blocks 403. When the left pressing block 407 no longer presses the two left clamping blocks 403, under the action of the left tension spring 411, the bottom ends of the two left clamping blocks 403 move closer together again, and the top ends of the two left clamping blocks 403 move away from each other, in an open state.

[0066] Two second left cylinders 408 are fixedly mounted on one side of the left positioning block 401, and two left insert blocks 409 are slidably mounted on the left positioning block 401 and fixedly connected to the output ends of the two second left cylinders 408. When the two second left cylinders 408 extend, they drive the two left insert blocks 409 to insert into the two connecting holes on the U-shaped connector of the left control arm 100, further restricting the rotational freedom of the left control arm 100 and ensuring that the control arm will not deflect when the side nut 300 is screwed in subsequently.

[0067] In summary: First, the operator places the left control arm 100 into the positioning groove of the left positioning block 401; then, the first left cylinder 406 actuates, driving the left pressing block 407 to slide, causing the tops of the two left clamping blocks 403 to approach each other and clamp the left control arm 100 from the inside; next, the two second left cylinders 408 actuate, driving the two left insert blocks 409 to insert into the connecting holes of the U-shaped connector, completing precise positioning and locking.

[0068] Furthermore, the right positioning block 501 is disposed at the end of the rotary drive mechanism 3 on the right side; two right mounting shafts 502 are respectively fixedly disposed within the right positioning block 501; a right clamping block 503 is rotatably disposed on each right mounting shaft 502; a right engaging block 504 is fixedly disposed at the bottom end of each right clamping block 503; the right mounting sleeve 505 is fixedly disposed at the bottom of the right positioning block 501; the first right cylinder 506 is fixedly disposed on one side of the right mounting sleeve 505; the right pressing block 507 is slidably disposed within the right mounting sleeve 505 and is fixedly connected to the output end of the first right cylinder 506.

[0069] The right extrusion block 507 has two symmetrical right sliding grooves 50701; the two right engagement blocks 504 are respectively located in the two right sliding grooves 50701; when the right extrusion block 507 is driven to slide, it can extrude the two right engagement blocks 504 to both sides, so as to drive the bottom ends of the two right clamping blocks 503 away from each other, thereby making the top ends of the two right clamping blocks 503 approach each other;

[0070] Two second right cylinders 508 are fixedly mounted on one side of the right positioning block 501; two right insert blocks 509 are slidably mounted on the right positioning block 501 and are fixedly connected to the output ends of the two second right cylinders 508 respectively; the two ends of the right tension spring 511 are fixedly connected to the bottom ends of the two right clamping blocks 503 respectively.

[0071] In this embodiment, the right positioning block 501 is used to support the right control arm 200, and its internal positioning groove provides a coarse positioning reference for the right control arm 200. Two right mounting shafts 502 are respectively fixedly disposed within the right positioning block 501, providing rotational support points for the two right clamping blocks 503. A right clamping block 503 is rotatably disposed on each right mounting shaft 502, allowing the right clamping block 503 to swing around the right mounting shaft 502. A right engagement block 504 is fixedly disposed at the bottom end of each right clamping block 503, serving as a force-bearing component and receiving the pushing force from the right pressing block 507. The right mounting sleeve 505 is fixedly disposed at the bottom of the right positioning block 501, providing a sliding guide cavity for the right pressing block 507. The first right cylinder 506 is fixedly disposed on one side of the right mounting sleeve 505, serving as a power source for driving the right pressing block 507. The right extrusion block 507 is slidably disposed in the right mounting sleeve 505 and is fixedly connected to the output end of the first right cylinder 506. Therefore, when the first right cylinder 506 extends or retracts, the right extrusion block 507 slides linearly in the right mounting sleeve 505.

[0072] The right extrusion block 507 has two right sliding grooves 50701 symmetrically arranged on its right side, and the two right engaging blocks 504 are respectively located within the two right sliding grooves 50701. The shape of the right sliding grooves 50701 is such that when the right extrusion block 507 slides axially, the inner sidewalls of the right sliding grooves 50701 push the right engaging blocks 504 to both sides. Therefore, when the right extrusion block 507 is driven to slide, it can extrude the two right engaging blocks 504 to both sides, thereby causing the bottom ends of the two right clamping blocks 503 to move away from each other, and thus causing the top ends of the two right clamping blocks 503 to move closer together. The right tension spring 511 provides a reset force to the two right clamping blocks 503. When the right pressing block 507 stops pressing the two right clamping blocks 503, under the action of the right tension spring 511, the bottom ends of the two right clamping blocks 503 move closer together again, while the top ends of the two right clamping blocks 503 move away from each other and are in an open state.

[0073] Two second right cylinders 508 are fixedly mounted on one side of the right positioning block 501, and two right insert blocks 509 are slidably mounted on the right positioning block 501 and fixedly connected to the output ends of the two second right cylinders 508. When the two second right cylinders 508 extend, they drive the two right insert blocks 509 to insert into the cylindrical connector of the right control arm 200, further restricting the rotational freedom of the right control arm 200 and ensuring that the control arm will not deflect when the side nut 300 is screwed in subsequently.

[0074] In summary: First, the operator places the right control arm 200 into the positioning groove of the right positioning block 501; then, the first right cylinder 506 actuates, driving the right pressing block 507 to slide, causing the tops of the two right clamping blocks 503 to approach each other and clamp the right control arm 200 from the inside; next, the two second right cylinders 508 actuate, driving the two right insert blocks 509 to insert into the cylindrical connector, completing precise positioning and locking.

[0075] Furthermore, the bracket 1101 is fixedly mounted on the top of the workbench 1; the two front and rear guide rails 1102 are respectively fixedly mounted on the top of the bracket 1101; the front and rear sliding seats 1103 are slidably mounted on the two front and rear guide rails 1102; the two left and right guide rails 1104 are respectively fixedly mounted on the top of the front and rear sliding seats 1103; each left and right sliding seat 1105 is slidably mounted on the two left and right guide rails 1104; the two left and right sliding seats 1105 are respectively fixedly connected to the two servo electric guns 12; the front and rear cylinders 1106 are fixedly mounted on the bracket 1101, and the output end of the front and rear cylinders 1106 is fixedly connected to the front and rear sliding seats 1103; the two left and right cylinders 1107 are respectively fixedly mounted on the top of the front and rear sliding seats 1103; the output ends of the two left and right cylinders 1107 are respectively fixedly connected to the two left and right sliding seats 1105.

[0076] In this embodiment, the bracket 1101 is fixedly mounted on the top of the workbench 1, serving as the supporting foundation for the entire dual-gun adjustment mechanism 11. Two front and rear guide rails 1102 are respectively fixedly mounted on the top of the bracket 1101, providing guidance for the front and rear sliding seats 1103 to move in the front-rear direction. The front and rear sliding seats 1103 are slidably mounted on the two front and rear guide rails 1102, and their bottoms are fixedly connected to the output ends of the front and rear cylinders 1106. The front and rear cylinders 1106 are fixedly mounted on the bracket 1101. When the front and rear cylinders 1106 extend or retract, they drive the front and rear sliding seats 1103 to move in the front-rear direction, thereby causing all components on them to move back and forth as a whole, realizing the front-rear position adjustment of the two servo electric guns 12 relative to the side nut 300. Two left and right guide rails 1104 are respectively fixedly mounted on the top of the front and rear sliding seats 1103, and the two left and right guide rails 1104 are parallel to each other, providing guidance for the two left and right sliding seats 1105 to move in the left and right direction. Each of the left and right sliding seats 1105 is slidably mounted on two left and right guide rails 1104, and the two left and right sliding seats 1105 are respectively fixedly connected to the two servo electric guns 12. Two left and right cylinders 1107 are respectively fixedly mounted on the top of the front and rear sliding seats 1103, and the output ends of the two left and right cylinders 1107 are respectively fixedly connected to the two left and right sliding seats 1105. When the left left cylinder 1107 extends or retracts, it drives the left left sliding seat 1105 to move along the left and right guide rails 1104, thereby driving the left servo electric gun 12 to move left and right; similarly, the right left and right cylinders 1107 independently drive the right servo electric gun 12 to move left and right.

[0077] With the above configuration, the dual-gun adjustment mechanism 11 can achieve independent adjustment of the two servo electric guns 12 in two directions: the front and rear cylinders 1106 drive the two servo electric guns 12 to move back and forth as a whole; the left and right cylinders 1107 drive their respective servo electric guns 12 to move left and right, so that the distance between the two servo electric guns 12 matches the distance between the two side nuts 300.

[0078] Furthermore, the left proximity sensor 410 is fixedly mounted on the side of the left positioning block 401.

[0079] In this embodiment, the left proximity sensor 410 is fixedly mounted on the side of the left positioning block 401 to detect whether the left control arm 100 is placed inside the left positioning block 401. When the left control arm 100 is in place, the left proximity sensor 410 outputs a signal to the controller, indicating that the left control arm 100 is in position; if no workpiece is detected, the equipment alarms and is prohibited from starting to prevent tightening operations from being performed in a material shortage state. This sensor realizes the error prevention function for material loading, ensuring the integrity of the assembly process.

[0080] Furthermore, the right proximity sensor 510 is fixedly mounted on the side of the right positioning block 501.

[0081] In this embodiment, the right proximity sensor 510 is fixedly mounted on the side of the right positioning block 501 to detect whether the right control arm 200 is placed inside the right positioning block 501. When the right control arm 200 is in place, the right proximity sensor 510 outputs a signal to the controller, indicating that the right control arm 200 is in position; if no workpiece is detected, the equipment alarms and is prohibited from starting to prevent tightening operations from being performed in a material shortage state. This sensor realizes the error prevention function for material loading, ensuring the integrity of the assembly process.

[0082] Furthermore, the two side nut proximity sensors 13 are fixedly mounted on the two side nut positioning blocks 9; the middle nut proximity sensor 14 is fixedly mounted on the middle nut positioning block 10.

[0083] In this embodiment, the two side nut proximity sensors 13 are used to detect whether the two side nuts 300 (M18 nuts) have been placed in the corresponding side nut positioning blocks 9; the intermediate nut proximity sensor 14 is used to detect whether the intermediate nut 400 has been placed in the intermediate nut positioning block 10. When any nut is not placed, the corresponding proximity sensor outputs a signal to the controller, the equipment issues an alarm and prohibits startup, preventing assembly failure due to missing nuts. The equipment is only allowed to perform subsequent pre-tightening and tightening actions after all nuts are in place.

[0084] Furthermore, the two safety light curtain components 15 are respectively fixedly installed on the left and right sides of the top of the workbench 1.

[0085] In this embodiment, the two safety light curtain components 15 are fixedly installed on the left and right sides of the top of the workbench 1, forming an invisible light curtain located above and in front of the workbench 1. When any part of the operator's arm or body enters the work area, it will block the infrared beam in the light curtain, and the safety light curtain will immediately output a stop signal to the equipment controller, causing the running components to stop urgently, thereby protecting the operator's safety. Used in conjunction with the two-hand start button, it achieves two levels of protection that meet industrial safety standards: the equipment can only start operating when both hands simultaneously press the start button and no object blocks the light curtain. If the operator accidentally enters a dangerous area during equipment operation, the equipment will stop immediately, further enhancing the equipment's safety performance.

[0086] Furthermore, the vehicle HADE rear control arm assembly also includes a top bracket 16 and a lighting lamp 17;

[0087] The top frame 16 is fixedly mounted on the top of the workbench 1; the lighting lamp 17 is fixedly mounted on the top frame 16.

[0088] In this embodiment, the top frame 16 is also equipped with a three-color indicator light, a controller for the servo electric gun 12, and a control panel. The three-color indicator light (typically red, yellow, and green) visually displays the current status of the equipment: green indicates normal operation or standby, yellow indicates pause or waiting for materials, and red indicates an alarm or malfunction. The controller for the servo electric gun 12 receives signals from the torque sensor and controls the start / stop, speed, and torque of the servo electric gun 12, achieving precise closed-loop torque control. The control panel includes a touchscreen or buttons for setting tightening parameters (such as target torque and pre-tightening depth), monitoring assembly data, and viewing alarm information. Through these human-machine interface and status indicator devices, operators can easily operate the equipment, monitor the production process, and quickly locate faults.

[0089] The second embodiment of this application is as follows:

[0090] Based on the first embodiment, please refer to Figure 15 ,in, Figure 15 This is a flowchart illustrating the second embodiment of the present invention.

[0091] The present invention provides a method for assembling a HADE rear control arm for automobiles, comprising the following steps:

[0092] S1: Place the left control arm 100 and the right control arm 200 on the left control arm positioning mechanism 4 and the right control arm positioning mechanism 5 respectively, and clamp and fix the left control arm 100 and the right control arm 200 through the left control arm positioning mechanism 4 and the right control arm positioning mechanism 5.

[0093] S2: Place the two side nuts 300 into the two side nut positioning blocks 9 respectively, and place the middle nut 400 into the middle nut positioning block 10;

[0094] S3: Simultaneously start two linear drive mechanisms 2 and two rotary drive mechanisms 3, so that the two linear drive mechanisms 2 drive the left control arm 100 and the right control arm 200 to move towards the middle, while the two rotary drive mechanisms 3 drive the left control arm 100 and the right control arm 200 to rotate, so as to screw the left control arm 100 and the right control arm 200 into the corresponding side nuts 300 respectively, until they are pre-tightened to the set depth;

[0095] S4: After pre-tightening, the side cylinder 7 drives the side nut positioning block 9 to descend;

[0096] S5: Continue to pre-tighten the left control arm 100 and right control arm 200 with the middle nut 400 through the linear drive mechanism 2 and the rotary drive mechanism 3. After the pre-tightening is in place, the middle cylinder 8 drives the middle nut positioning block 10 to descend.

[0097] S6: Adjust the position of the two servo electric guns 12 by adjusting the dual gun adjustment mechanism 11 so that the two servo electric guns 12 are aligned with the two side nuts 300 respectively, and start the servo electric guns 12 to finally tighten the two side nuts 300 to the set torque.

[0098] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A vehicle HADE rear control arm assembly device, characterized in that, It includes a worktable, two linear drive mechanisms, two rotary drive mechanisms, a left control arm positioning mechanism, a right control arm positioning mechanism, a three-position guide base, two side cylinders, a middle cylinder, two side nut positioning blocks, a middle nut positioning block, a dual-gun adjustment mechanism, and two servo electric guns. Two linear drive mechanisms are symmetrically arranged on the left and right sides of the top of the worktable; each linear drive mechanism has a rotary drive mechanism on its top; the left control arm positioning mechanism is located at the end of the left rotary drive mechanism; the right control arm positioning mechanism is located at the end of the right rotary drive mechanism; the three-position guide base is fixedly arranged on the top of the worktable and located between the two linear drive mechanisms; two side cylinders are fixedly arranged on the three-position guide base; the middle cylinder is fixedly arranged on the three-position guide base; two side nut positioning blocks are slidably arranged in the three-position guide base and are fixedly connected to the output ends of the two side cylinders respectively; the middle nut positioning block is slidably arranged in the three-position guide base and is fixedly connected to the output end of the middle cylinder; the dual-gun adjustment mechanism is arranged on the top of the worktable and located behind the three-position guide base. Two servo electric guns are mounted on the dual-gun adjustment mechanism; the servo electric guns are used to tighten the side nuts.

2. The automotive HADE rear control arm assembly device as described in claim 1, characterized in that, The left control arm positioning mechanism includes a left positioning block, two left mounting shafts, two left clamping blocks, two left engaging blocks, a left mounting sleeve, a first left cylinder, a left pressing block, two second left cylinders, two left insert blocks, and a left tension spring; The left positioning block is disposed at the end of the rotary drive mechanism on the left side; the two left mounting shafts are respectively fixedly disposed within the left positioning block; a left clamping block is rotatably disposed on each left mounting shaft; a left engagement block is fixedly disposed at the bottom end of each left clamping block; the left mounting sleeve is fixedly disposed at the bottom of the left positioning block; the first left cylinder is fixedly disposed on one side of the left mounting sleeve; the left extrusion block is slidably disposed within the left mounting sleeve and is fixedly connected to the output end of the first left cylinder; The left extrusion block has two symmetrical left sliding grooves; the two left engagement blocks are respectively located in the two left sliding grooves; when the left extrusion block is driven to slide, it can extrude the two left engagement blocks to both sides, so as to drive the bottom ends of the two left clamping blocks away from each other, thereby making the top ends of the two left clamping blocks approach each other. Two second left cylinders are fixedly mounted on one side of the left positioning block; two left insert blocks are slidably mounted on the left positioning block and are fixedly connected to the output ends of the two second left cylinders respectively; the two ends of the left tension spring are fixedly connected to the bottom ends of the two left clamping blocks respectively.

3. The automotive HADE rear control arm assembly device as described in claim 2, characterized in that, The right control arm positioning mechanism includes a right positioning block, two right mounting shafts, two right clamping blocks, two right engaging blocks, a right mounting sleeve, a first right cylinder, a right pressing block, two second right cylinders, two right inserting blocks, and a right tension spring. The right positioning block is disposed at the end of the rotary drive mechanism on the right side; the two right mounting shafts are respectively fixedly disposed within the right positioning block; a right clamping block is rotatably disposed on each right mounting shaft; a right engagement block is fixedly disposed at the bottom end of each right clamping block; the right mounting sleeve is fixedly disposed at the bottom of the right positioning block; the first right cylinder is fixedly disposed on one side of the right mounting sleeve; the right extrusion block is slidably disposed within the right mounting sleeve and is fixedly connected to the output end of the first right cylinder. The right extrusion block has two symmetrical right sliding grooves; the two right engagement blocks are respectively located in the two right sliding grooves; when the right extrusion block is driven to slide, it can extrude the two right engagement blocks to both sides, so as to drive the bottom ends of the two right clamping blocks away from each other, thereby making the top ends of the two right clamping blocks approach each other. Two second right cylinders are fixedly mounted on one side of the right positioning block; two right insert blocks are slidably mounted on the right positioning block and are fixedly connected to the output ends of the two second right cylinders respectively; the two ends of the right tension spring are fixedly connected to the bottom ends of the two right clamping blocks respectively.

4. The automotive HADE rear control arm assembly device as described in claim 3, characterized in that, The dual-gun adjustment mechanism includes a bracket, two front and rear guide rails, front and rear sliding seats, two left and right guide rails, two left and right sliding seats, front and rear cylinders, and two left and right cylinders. The bracket is fixedly mounted on the top of the workbench; the two front and rear guide rails are respectively fixedly mounted on the top of the bracket; the front and rear sliding seats are slidably mounted on the two front and rear guide rails; the two left and right guide rails are respectively fixedly mounted on the top of the front and rear sliding seats; each of the left and right sliding seats is slidably mounted on the two left and right guide rails; the two left and right sliding seats are respectively fixedly connected to the two servo electric guns; the front and rear cylinders are fixedly mounted on the bracket, and the output ends of the front and rear cylinders are fixedly connected to the front and rear sliding seats; the two left and right cylinders are respectively fixedly mounted on the top of the front and rear sliding seats; the output ends of the two left and right cylinders are respectively fixedly connected to the two left and right sliding seats.

5. The automotive HADE rear control arm assembly device as described in claim 4, characterized in that, The left control arm positioning mechanism also includes a left proximity sensor; The left proximity sensor is fixedly mounted on the side of the left positioning block.

6. The automotive HADE rear control arm assembly device as described in claim 5, characterized in that, The right control arm positioning mechanism also includes a right proximity sensor; The right proximity sensor is fixedly mounted on the side of the right positioning block.

7. The automotive HADE rear control arm assembly device as described in claim 6, characterized in that, The automotive HADE rear control arm assembly also includes two side nut proximity sensors and a middle nut proximity sensor; The two side nut proximity sensors are fixedly mounted on the two side nut positioning blocks; the middle nut proximity sensor is fixedly mounted on the middle nut positioning block.

8. The automotive HADE rear control arm assembly device as described in claim 7, characterized in that, The automotive HADE rear control arm assembly also includes two safety light curtain components; The two safety light curtain components are respectively fixedly installed on the left and right sides of the top of the workbench.

9. The automotive HADE rear control arm assembly device as described in claim 8, characterized in that, The automotive HADE rear control arm assembly also includes a top frame and lighting fixtures; The top frame is fixedly mounted on the top of the workbench; the lighting lamp is fixedly mounted on the top frame.

10. A method for assembling a rear control arm of an automobile HADE, applied to the automobile HADE rear control arm assembling device according to any one of claims 1-9; characterized in that, Includes the following steps: The left control arm and the right control arm are placed on the left control arm positioning mechanism and the right control arm positioning mechanism respectively, and the left control arm and the right control arm are clamped and fixed by the left control arm positioning mechanism and the right control arm positioning mechanism. Place the two side nuts into the two side nut positioning blocks respectively, and place the middle nut into the middle nut positioning block; Simultaneously start two linear drive mechanisms and two rotary drive mechanisms, so that the two linear drive mechanisms drive the left control arm and the right control arm to move towards the middle, while the two rotary drive mechanisms drive the left control arm and the right control arm to rotate, so that the left control arm and the right control arm are screwed into the corresponding side nuts respectively, until they are pre-tightened to the set depth; After pre-tightening, the side cylinder drives the side nut positioning block to descend; Continue to pre-tighten the left and right control arms with the middle nut through the linear drive mechanism and the rotary drive mechanism. After the pre-tightening is in place, the middle cylinder drives the middle nut positioning block to descend. The positions of the two servo electric guns are adjusted by the dual-gun adjustment mechanism so that the two servo electric guns are aligned with the two side nuts respectively. The servo electric guns are then activated to finally tighten the two side nuts to the set torque.

Images