A torsion beam bushing press fitting machine

Abstract

This utility model discloses a torsion beam bushing pressing machine, including a machine base, a positioning component mounted on the machine base for supporting and positioning the torsion beam, two mounting components symmetrically arranged on the machine base, and an electrical cabinet electrically connected to the mounting components. The mounting components include a base that can be horizontally rotated and adjusted in angle, a pressing seat slidably connected to the upper end of the base, a first drive unit electrically connected to the electrical cabinet for driving the pressing seat to move horizontally reciprocally, a fixing mechanism mounted on the pressing seat for fixing the torsion beam, and a pressing mechanism. The pressing mechanism includes a pressing head corresponding to the position of the fixing mechanism, a second drive unit electrically connected to the electrical cabinet, and a guide mechanism connected to the pressing head. The pressing head can reciprocate in a direction closer to or away from the fixing mechanism under the guidance of the guide mechanism. When the pressing head moves in a direction closer to the fixing mechanism, it can press the bushing onto the torsion beam. The pressing head angle and pressing position are adjustable to make the bushing pressing position more accurate.

Description

Technical Field

[0001] This utility model belongs to the field of torsion beam assembly technology, specifically relating to a torsion beam bushing press-fitting machine. Background Technology

[0002] In automotive chassis manufacturing, the torsion beam, as a core component of the non-independent suspension system, directly affects the vehicle's handling stability, ride comfort, and service life through the press-fitting quality of its bushings. Currently, traditional torsion beam bushing press-fitting equipment mostly employs a fixed structure, lacking angle adjustment and positional self-adaptation capabilities. In actual production, due to manufacturing tolerances, installation positioning errors, or structural differences between different models of torsion beam workpieces, fixed press-fitting equipment struggles to ensure precise coaxiality between the press head and the bushing tube, easily leading to bushing misalignment, uneven pressing force, and consequently, bushing deformation, localized stress concentration in the torsion beam, and reduced product yield and reliability. Therefore, there is an urgent need for a new type of equipment capable of multi-angle adjustment, precise positioning, and self-adaptive press-fitting capabilities to improve the press-fitting quality and production efficiency of torsion beam bushings. Utility Model Content

[0003] In view of the technical problems existing in the prior art, this utility model provides a torsion beam bushing press-fitting machine.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A torsion beam bushing press-fitting machine includes a machine base, a positioning assembly mounted on the machine base for supporting and positioning a torsion beam, two mounting assemblies symmetrically arranged on the machine base, and an electrical cabinet electrically connected to the mounting assemblies. The mounting assemblies include a base capable of horizontal rotation and angle adjustment, a press-fitting seat slidably connected to the upper end of the base, a first drive unit electrically connected to the electrical cabinet for driving the press-fitting seat to reciprocate horizontally, a fixing mechanism mounted on the press-fitting seat for fixing the torsion beam, and a press-fitting mechanism. The press-fitting mechanism includes a press head corresponding to the position of the fixing mechanism, a second drive unit electrically connected to the electrical cabinet, and a guide mechanism connected to the press head. The press head can reciprocate in a direction approaching or away from the fixing mechanism under the guidance of the guide mechanism. When the press head moves towards the fixing mechanism, it can press the bushing onto the torsion beam.

[0006] Furthermore, the pressing base includes a connecting plate slidably connected to the base and a support base disposed above the connecting plate. The end face of the support base away from the connecting plate is provided with a pressing space recessed towards the connecting plate. The recessed pressing space causes the support base to form a first mounting arm for mounting the fixing mechanism and a second mounting arm for mounting the pressing mechanism. The guide mechanism is disposed on the bottom surface of the pressing space.

[0007] Furthermore, the end of the support base near the fixing mechanism is defined as the first end, and the other opposite end is defined as the second end; the support base is connected to the connecting plate through a floating mechanism, the floating mechanism including a floating limiting component disposed at the first end, a floating support component located on one side of the floating limiting component and distributed near the first end, and a floating component installed at the second end of the support base and located below the second drive unit. The floating support component is connected to the support base through a shaft connection structure, so that the support base can generate an inclination angle with the shaft connection as the fulcrum to achieve adaptive adjustment of the pressure head height.

[0008] Furthermore, the floating limiting assembly includes two limiting lugs that are bolted to the support base and located on both sides of its first end face, and a limiting screw that is bolted to the limiting lugs one by one, the lower end of the limiting screw being able to abut against the connecting plate.

[0009] The floating support assembly includes two support blocks connected to the upper end of the connecting plate, and the support seat is accommodated between the two support blocks;

[0010] The shaft connection structure includes a shaft connection cavity that passes through the support base, bearings that are detachably connected to the support base and located at both ends of the shaft connection cavity, and a rotating shaft that passes through the shaft connection cavity and is connected to the corresponding bearings at both ends. The two ends of the rotating shaft are also shaft-connected to the support blocks at corresponding positions.

[0011] The floating assembly includes an upper support plate screwed to the end face of the second end of the support base, two guide rods arranged at intervals at the lower end of the upper support plate, a return spring sleeved within the guide rods, a sleeve plate corresponding to the guide rods and screwed to the connecting plate, and a limiting ring located below the sleeve plate and screwed to the guide rods. The guide rod includes a sleeve section for sleeved with the return spring, a limiting section located at the lower end of the sleeve section with an outer diameter larger than the sleeve section, and a movable section located at the lower end of the limiting section with an outer diameter smaller than the limiting section. The return spring is located between the limiting section and the upper support plate, and the movable section can pass through the sleeve plate and connect to the limiting ring.

[0012] Furthermore, the fixing mechanism includes a third drive unit detachably connected to the outside of the first mounting arm, a limiting seat detachably connected to the inside of the first mounting arm and capable of abutting against the torsion beam, and a fixing core with one end capable of passing through the limiting seat and the first mounting arm and connecting to the third drive unit. The third drive unit can drive the fixing core to reciprocate within the limiting seat.

[0013] Furthermore, the second drive unit is an electric cylinder and is mounted on the second mounting arm. The pressure head is located in the pressing space, and a positioning part for positioning the bushing is provided on the end face of the pressure head near the fixing mechanism. A feeding sensor for detecting whether the pressure head has completed feeding is provided on one side of the pressure head.

[0014] Furthermore, the guiding mechanism includes a guide seat that is detachably connected to the electric cylinder and also detachably connected to the pressure head, a guide slider screwed to the lower end of the guide seat, and a guide slide rail whose lower end is slidably connected to the guide slider. The guide slide rail is arranged along the length direction of the bottom surface inside the pressing space, and the guide slider reciprocates along the guide slide rail to guide the reciprocating movement of the pressure head.

[0015] Furthermore, the upper end of the base is provided with a sliding rail, and a sliding block is slidably connected to the sliding rail. The sliding block is detachably connected to the connecting plate, and the sliding block can reciprocate on the sliding rail. A first limiting mechanism and a second limiting mechanism for limiting the position of the connecting plate are respectively provided on both sides of the sliding rail.

[0016] Furthermore, the lower end of the base is connected to a rotary drive unit and a movable wheel that can slide on the machine platform; the machine platform is provided with a rotary limiting component to limit the rotation angle of the base. The rotary limiting component includes two limiting brackets respectively located at the front and rear ends of the connecting plate, and limiting rods that can be screwed to the limiting brackets one by one. The limiting rods can abut against the side wall of the base.

[0017] Furthermore, the positioning component includes two positioning mechanisms arranged at intervals and respectively distributed on one side of the base, and a clamping mechanism located between the two positioning mechanisms;

[0018] The positioning mechanism includes a positioning column detachably connected to the machine tool, a positioning protrusion at the upper end of the positioning column, a support arm on one side of the positioning column extending toward the press-fitting seat, and a positioning pin on the support arm.

[0019] The clamping mechanism includes a clamping column detachably connected to the machine base, a clamping rod axially connected to the clamping column at one end, a hinge seat rotatably connected to the clamping rod, and a fourth drive unit connected to the lower end of the hinge seat. A holding member is connected to the lower end of the clamping rod, and a holding groove with a shape adapted to the torsion beam is provided on the bottom surface of the holding member. The fourth drive unit can drive the holding member to move toward the workpiece so that the holding groove can clamp the torsion beam. When the holding member moves away from the workpiece, the holding groove can release the clamping on the torsion beam.

[0020] In summary, the beneficial effects of this utility model are as follows: 1. Significantly improved pressing accuracy: Multi-dimensional adjustment (angle rotation, axial movement, height compensation) ensures a substantial reduction in the coaxiality error between the press head and the bushing tube, avoiding defects such as bushing misalignment and deformation; the electric cylinder enables precise control of pressing depth and force, ensuring that the fit clearance between the bushing and the torsion beam meets design requirements, significantly improving product qualification rate. 2. Angle adjustment adapts to the bushing installation angle of different torsion beams, axial movement adapts to bushing tubes of different lengths, and the detachable limit seat and positioning part are compatible with multiple bushing specifications, meeting the pressing needs of multiple torsion beam models without changing equipment, reducing investment in dedicated equipment. 3. Automated positioning and detection reduce reliance on operator skills, saving manpower and processing time. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the workpiece (torsion beam) that the press-fitting machine in this utility model needs to press.

[0022] Figure 2 This is a structural schematic diagram of a torsion beam bushing press-fitting machine provided by this utility model.

[0023] Figure 3 This is a three-dimensional structural diagram of the mounting components in this utility model.

[0024] Figure 4 yes Figure 3 A magnified view of part A in the middle.

[0025] Figure 5 This is a front view of the clamping mechanism in this utility model.

[0026] Figure 6 This is a schematic diagram of the structure of the medium-pressure loading machine with the workpiece loaded in this utility model.

[0027] Figure 7 This is a three-dimensional structural diagram of the pressure mounting base in this utility model.

[0028] Figure 8 This is the front view of the pressure mounting base in this utility model.

[0029] In the diagram, 100 is the torsion beam, 110 is the bushing, and 120 is the positioning cavity.

[0030] 200-Machine base, 210-Safety net, 220-Rotation limit assembly, 221-Limit bracket, 222-Limit rod, 230-Electrical cabinet;

[0031] 300-Positioning mechanism, 310-Positioning column, 320-Positioning protrusion, 330-Support arm, 340-Positioning pin;

[0032] 400-Clamping mechanism, 410-Clamping column, 420-Clamping rod, 421-Clamping member, 430-Hinge seat, 440-Fourth drive unit;

[0033] 500-Mounting component, 510-Base, 511-Sliding rail, 511A-Sliding block, 512-First limiting mechanism, 513-Second limiting mechanism, 514-Rotary drive unit, 515-Moving wheel, 520-Pressure seat, 521-Connecting plate, 522-Support seat, 5220-Pressure space, 5221-First mounting arm, 5222-Second mounting arm, 5223-Feeding sensor, 530-First drive unit, 540-Fixing mechanism, 541-Third drive unit, 542-Limiting seat, 543-Fixing core, 550-Pressure mechanism, 551-Pressure head, 551A-Positioning part, 552-Second drive unit, 553-Guide mechanism, 553A-Guide seat, 553B-Guide slider, 553C-Guide rail;

[0034] 600-Floating mechanism, 610-Floating limit assembly, 611-Limit support lug, 612-Limit screw, 620-Support block, 630-Bearing, 640-Rotating shaft, 650-Upper support plate, 660-Reset spring, 670-Socket plate, 680-Limit ring, 690-Limit section, 690A-Moving section. Detailed Implementation

[0035] The present invention will be further illustrated below with reference to specific figures.

[0036] Please see Figure 1 The torsion beam 100 to be press-fitted has a bushing tube 110 at each end for installing the bushing, and the torsion beam 100 has two spaced positioning cavities 120.

[0037] Please see Figure 2 and Figure 6This utility model provides a torsion beam bushing pressing machine, including a machine base 200, a positioning assembly mounted on the machine base 200 for supporting and positioning a torsion beam 100, two mounting assemblies 500 symmetrically arranged on the machine base 200, and an electrical cabinet 230 electrically connected to the mounting assemblies 500. The mounting assembly 500 includes a base 510 capable of horizontal rotation and angle adjustment, a pressing seat 520 slidably connected to the upper end of the base 510, a first drive unit 530 electrically connected to the electrical cabinet 230 for driving the pressing seat 520 to reciprocate horizontally, a fixing mechanism 540 mounted on the pressing seat 520 for fixing the torsion beam 100, and a pressing mechanism 550. The pressing mechanism 550 includes a pressing head 551 corresponding to the position of the fixing mechanism 540, a second drive unit 552 electrically connected to the electrical cabinet 230, and a guide mechanism 553 connected to the pressing head 551. The pressure head 551 can reciprocate towards or away from the fixed mechanism 540 under the guidance of the guide mechanism 553. When the pressure head 551 moves towards the fixed mechanism 540, it can press the bushing onto the torsion beam 100. The two symmetrically arranged mounting components 500 can simultaneously press the bushing tubes 110 at both ends of the torsion beam 100. Through the horizontal rotation adjustment function of the base 510, the orientation of the pressing mechanism 550 can be dynamically adjusted according to the actual workpiece angle to ensure that the pressure head 551 is aligned with the axis of the bushing tube 110 and avoid bushing misalignment due to insufficient coaxiality. Through the horizontal reciprocating movement of the pressing seat 520 (driven by the first drive unit 530) and the guide mechanism 553 of the pressure head 551 (driven by the second drive unit 552), the pressing position can be adjusted to accommodate the pressing of bushings of more different sizes. This press-fitting machine can significantly reduce the coaxiality error between the press head 551 and the bushing tube 110 by adjusting the angle and the press-fitting position, making the bushing press-fitting position more accurate, avoiding defects such as skewing and deformation, significantly improving the product qualification rate, and the equipment can be quickly adapted to different models of torsion beams, making it more versatile.

[0038] Please continue reading. Figure 2 The machine 200 is surrounded by a protective net 210. During production, the protective net 210 can effectively block flying objects and prevent injury or damage to surrounding equipment.

[0039] Qing Reference Figure 3 The positioning assembly includes two positioning mechanisms 300 arranged at intervals and correspondingly distributed on one side of the base 510, and a clamping mechanism 400 located between the two positioning mechanisms 300. Please refer to [link / reference]. Figure 4The positioning mechanism 300 includes a positioning post 310 connected to the machine base 200, a positioning protrusion 320 located at the upper end of the positioning post 310, a support arm 330 located on one side of the positioning post 310 and extending towards the pressing seat 520, and a positioning pin 340 located on the support arm 330. When loading the torsion beam 100, the positioning protrusion 320 is inserted into the corresponding positioning cavity 120, and the positioning pin 340 is inserted into the corresponding positioning hole near the bushing tube 110. Please refer to [link to relevant documentation]. Figure 5 The clamping mechanism 400 includes a clamping column 410 bolted to the machine base 200, a clamping rod 420 with one end axially connected to the clamping column 410, a hinge seat 430 rotatably connected to the clamping rod 420, and a fourth drive unit 440 connected to the lower end of the hinge seat 430. The fourth drive unit 440 can be a hydraulic cylinder, a pneumatic cylinder, or other components. A clamping member 421 is connected to the lower end of the clamping rod 420, and a clamping groove with a shape adapted to the torsion beam 100 is provided on the bottom surface of the clamping member 421. The fourth drive unit 440 can drive the clamping member 421 to move toward the workpiece so that the clamping groove can clamp the torsion beam 100. When the clamping member 421 moves away from the workpiece, the clamping groove can release the clamping on the torsion beam 100. After the torsion beam 100 has been positioned by the positioning component, the middle part of the torsion beam 100 is pressed by the pressing member 421. The rigid pressing of the pressing mechanism 400 can reduce the vibration of the workpiece during pressing.

[0040] Please see Figure 7 and Figure 8The press-fit base 520 includes a connecting plate 521 slidably connected to the base 510 and a support base 522 disposed above the connecting plate 521. The end face of the support base 522 away from the connecting plate 521 has a press-fit space 5220 recessed towards the connecting plate 521. The recessed press-fit space 5220 allows the support base 522 to form a first mounting arm 5221 for mounting the fixing mechanism 540 and a second mounting arm 5222 for mounting the press-fit mechanism 550. The recessed press-fit space 5220 can compactly integrate the installation position and provides a accommodating area for a portion of the torsion beam 100 (the part requiring press-fit bushing), allowing the fixing mechanism 540 (first mounting arm 5221) and the press-fit mechanism 550 (second mounting arm 5222) to be located on both sides of the press-fit space 5220, forming an "opposing encirclement" layout. This design allows the fixing and pressing actions to be completed in the same confined space, avoiding the excessive overall size caused by dispersed mechanisms, saving equipment space, and shortening the distance between the pressing head 551 and the fixing mechanism 540, reducing force transmission loss during the pressing process. Since the relative position of the fixing mechanism 540 and the pressing mechanism 550 is precisely defined by the support base 522 structure, when used in conjunction with the automated control of the electrical cabinet 230, there is no need for frequent manual calibration of their relative positions. Simply adjust the overall horizontal position of the pressing base 520 and the angle of the base 510 through the first drive unit 530 to quickly adapt to the pressing requirements of different models of torsion beams 100, improving the equipment's changeover efficiency.

[0041] The fixing mechanism 540 includes a third drive unit 541 bolted to the outside of the first mounting arm 5221, a limiting seat 542 detachably bolted to the inside of the first mounting arm 5221 and abutting against the torsion beam 100, and a fixing core 543 with one end passing through the limiting seat 542 and the mounting arm and connected to the third drive unit 541. The third drive unit 541 is preferably a pneumatic or hydraulic cylinder, with its piston rod connected to the fixing core 543. The third drive unit 541 can drive the fixing core 543 to reciprocate within the limiting seat 542. By adjusting the piston rod stroke through the third drive unit 541 (pneumatic or hydraulic cylinder), the extension length of the fixing core 543 can dynamically adapt to bushings 110 of different lengths without replacing parts or recalibrating the reference position. This design overcomes the limitation of traditional fixing mechanisms 540 being "one type for one type of bushing," achieving compatibility of the same equipment with bushings 110 of various specifications.

[0042] The second drive unit 552 is an electric cylinder mounted on the second mounting arm 5222. During the bushing pressing process, the electric cylinder can precisely control the pressing depth of the press head 551, ensuring that the fit clearance between the bushing and the torsion beam 100 meets the design requirements. The electric cylinder typically integrates a position encoder or force sensor to form a closed-loop control system, which can monitor the position and force of the press head 551 in real time. The press head 551 is located within the pressing space 5220, and a positioning part 551A for positioning the bushing is provided on the end face of the press head 551 near the fixing mechanism 540. The positioning part 551A ensures that the bushing is in an ideal initial position before pressing, reducing tilting or jamming caused by initial offset, ensuring consistent pressing depth, angle, and coaxiality each time, and reducing the scrap rate. A feeding sensor 5223 is provided on one side of the press head 551 to detect whether the press head 551 has completed feeding. If the feeding sensor 5223 does not detect the bushing, it sends a signal to stop the press head 551 from moving, preventing damage to the equipment due to dry pressure.

[0043] A guiding mechanism 553 is located on the bottom surface of the pressing space 5220. The guiding mechanism 553 includes a guide seat 553A bolted to the electric cylinder and also bolted to the pressing head 551; a guide slider 553B bolted to the lower end of the guide seat 553A; and a guide rail 533C slidably connected at its lower end to the guide slider 553B. The guide rail 533C is arranged along the length of the bottom surface of the pressing space 5220. The guide slider 553B reciprocates along the guide rail 533C, thus guiding the reciprocating movement of the pressing head 551. The guiding mechanism 553 enables the pressing head 551 to operate smoothly, and its reliability and stability reduce the reliance on manual monitoring during the pressing process.

[0044] The support base 522 is defined as a first end near the fixing mechanism 540, and the opposite end is defined as a second end. The support base 522 is connected to the connecting plate 521 via a floating mechanism 600. The floating mechanism 600 includes a floating limiting component 610 located at the first end, a floating support component located on one side of the floating limiting component 610 and near the first end, and a floating component installed at the second end of the support base 522 and located below the second drive unit 552. The floating support component includes two support blocks 620 connecting the upper ends of the connecting plate 521, with the support base 522 housed between the two support blocks 620. The shaft connection structure includes a shaft connection cavity penetrating the support base 522, bearings 630 bolted to the support base 522 and located at both ends of the shaft connection cavity, and a rotating shaft 640 passing through the shaft connection cavity and connected at both ends to the corresponding bearings 630. Both ends of the rotating shaft 640 are also shaft-connected to the corresponding support blocks 620. The floating support assembly is connected to the support base 522 via a shaft connection structure, which allows the support base 522 to tilt at the shaft connection point to achieve adaptive adjustment of the height of the pressure head 551.

[0045] The floating limit component 610 limits the maximum tilt angle of the support base 522 to prevent excessive offset; the floating support component forms a fulcrum through the shaft connection structure, around which the support base 522 can rotate; the floating component provides elastic support, allowing the support base 522 to tilt slightly when under force. When there is a height deviation in the torsion beam 100 or the bushing, the lateral force generated when the pressure head 551 contacts the workpiece will cause the support base 522 to rotate around the shaft connection fulcrum, automatically adjusting the angle of the pressure head 551 to keep it perpendicular to the workpiece surface, thus achieving height compensation.

[0046] The floating limit assembly 610 includes two limit lugs 611 bolted to the support base 522 and located on both sides of its first end face, and limit screws 612 corresponding to the limit lugs 611. The lower end of the limit screw 612 can abut against the connecting plate 521. The adjustable abutment between the limit screw 612 and the connecting plate 521 allows adjustment of the maximum tilt angle of the support base 522 to accommodate different workpiece tolerances. Furthermore, when abnormal lateral forces occur during press-fitting, the rigid contact between the limit screw 612 and the connecting plate 521 prevents the support base 522 from tilting excessively, avoiding damage to the guide mechanism 553 or the electric cylinder, and improving equipment reliability.

[0047] The floating assembly includes an upper support plate 650 screwed to the end face of the second end of the support base 522, two guide rods arranged at intervals at the lower end of the upper support plate 650, a return spring 660 sleeved within the guide rods, a sleeve plate 670 corresponding to the guide rods and screwed to the connecting plate 521, and a limiting ring 680 located below the sleeve plate 670 and screwed to the guide rods. The guide rods include a sleeve section for sleeved with the return spring 660, a limiting section 690 located at the lower end of the sleeve section with an outer diameter larger than the sleeve section, and a movable section 690A located at the lower end of the limiting section 690 with an outer diameter smaller than the limiting section 690. The return spring 660 is located between the limiting section 690 and the upper support plate 650. The movable section 690A can pass through the sleeve plate 670 and connect to the limiting ring 680. The two guide rods and the return spring 660 form an elastic support, ensuring that the support base 522 can automatically return to its original position after being tilted under force. When the pressure head 551 contacts the workpiece surface, the floating mechanism 600 tilts to make the pressing force act perpendicularly on the workpiece, avoiding bushing skewing or uneven pressing caused by angular deviation. The adaptive floating function reduces pressing defects caused by workpiece tolerance.

[0048] The upper end of the base 510 is provided with a sliding rail 511, and a sliding block 511A is slidably connected to the sliding rail 511. The sliding block 511A is bolted to the connecting plate 521, and the connecting plate 521 is connected to the first drive unit 530. The first drive unit 530 is preferably a cylinder or hydraulic cylinder. Activating the first drive unit 530 allows the connecting plate 521 to reciprocate along the sliding rail 511 under the drive of the sliding block 511A. A first limiting mechanism 512 and a second limiting mechanism 513 are respectively provided on both sides of the sliding rail 511 to limit the position of the connecting plate 521. The pressing seat 520 can be horizontally adjusted on the base 510, and the adjustment direction is consistent with the pressing direction. When it is necessary to press bushes of different specifications (such as bushes with large length differences), there is no need to change the pressing head 551 or adjust the mechanical structure of the equipment. It is only necessary to adjust the starting position of the pressing head 551 by horizontal movement to adapt to different pressing strokes (such as reducing the stroke for short bushes and increasing the stroke for long bushes), thereby improving the compatibility of the equipment with workpieces of multiple specifications.

[0049] The lower end of the base 510 is connected to a rotary drive unit 514 and a sliding wheel 515 that can slide on the machine base 200. The design of the sliding wheel 515 facilitates the overall movement of the press machine on the machine base 200. The rotary drive unit 514 can be an electric motor or a hydraulic motor. The machine base 200 is provided with a rotary limiting assembly 220 to limit the rotation angle of the connecting plate 521. The rotary limiting assembly 220 includes two limiting brackets 221 respectively located at the front and rear ends of the connecting plate 521, and limiting rods 222 that can be screwed to the limiting brackets 221. The limiting rods 222 can abut against the side wall of the connecting plate 521. The rotary drive unit 514 at the lower end of the base 510 can drive the entire press mechanism 550 (including the support base 522, the press head 551, etc.) to rotate around the base 510, thereby changing the relative angle between the press head 551 and the workpiece to be pressed. This active rotation function can adapt to the pressing angle requirements of different workpieces, avoiding pressing misalignment or damage caused by workpiece angle deviation. The rotation drive unit 514 can realize automated angle adjustment, and together with the horizontal movement of the first drive unit 530 and the height compensation of the floating mechanism 600, a multi-dimensional adjustment system is formed, which can adapt to the pressing requirements of complex workpieces without manual intervention.

[0050] The working process of this press-fitting machine is as follows: The torsion beam 100 to be press-fitted is placed on the positioning assembly of the machine base 200. The positioning protrusion 320 of the positioning mechanism 300 is inserted into the positioning cavity 120 of the torsion beam 100, and the positioning pin 340 is inserted into the positioning hole near the bushing tube 110 to achieve initial positioning. Subsequently, the fourth drive unit 440 of the pressing mechanism 400 drives the pressing member 421 to move down, pressing the middle of the torsion beam 100 through the pressing groove to prevent shaking during press-fitting. The equipment parameters are adjusted according to the angle requirements of the torsion beam 100 and the bushing tube 110. The rotation drive unit 514 drives the base 510 to rotate, so that the pressing mechanism 550 is aligned with the axis of the bushing tube 110. The limiting rod 222 of the rotation limiting assembly 220 limits the maximum rotation angle by abutting against the connecting plate 521 to ensure accurate angle. The first drive unit 530 drives the pressing seat 520 to move along the sliding rail 511 (in the same direction as the pressing direction), adjusting the axial distance between the pressing head 551 and the bushing tube 110 to accommodate bushing tubes 110 of different lengths. The first limiting mechanism 512 and the second limiting mechanism 513 limit the range of movement to prevent overtravel. The bushing is placed in the positioning part 551A of the pressing head 551 to ensure accurate initial position of the bushing. After the feeding sensor 5223 detects the bushing, it sends a signal to the electrical cabinet 230, allowing the pressing action; if the bushing is not detected, the system prohibits pressing to prevent damage to the equipment from air pressure. The third drive unit 541 of the fixing mechanism 540 drives the fixing core 543 to extend, which, together with the limiting seat 542, fixes the end of the bushing tube 110 of the torsion beam 100; the guide slider 553B of the guiding mechanism 553 slides along the sliding rail to ensure that the pressing head 551 moves smoothly in the preset direction. If the torsion beam 100 has a height deviation or the end face of the bushing tube 110 is tilted, the floating mechanism 600 rotates around the pivot point via the support base 522, causing the pressure head 551 to automatically adjust its angle to be perpendicular to the end face of the bushing tube 110. The electric cylinder drives the pressure head 551 to move towards the fixing mechanism 540. By monitoring the pressing force and depth through the electric cylinder, the bushing is precisely pressed into the bushing tube 110. After pressing is completed, the electric cylinder drives the pressure head 551 to reset, the fixing core 543 retracts, the pressing mechanism 400 is released, and the torsion beam 100 that has completed pressing is removed.

[0051] This press-fitting machine offers the following advantages: 1. Significantly improved press-fitting accuracy: Multi-dimensional adjustments (angle rotation, axial movement, height compensation) ensure a substantial reduction in the coaxiality error between the press head 551 and the bushing tube 110, preventing defects such as bushing misalignment and deformation. The electric cylinder enables precise control of press-fitting depth and force, ensuring that the fit clearance between the bushing and the torsion beam 100 meets design requirements, significantly improving product qualification rate. 2. Angle adjustment adapts to different bushing installation angles of the torsion beam 100, and axial movement adapts to bushing tubes 110 of different lengths. The detachable limit seat 542 and positioning part 551A are compatible with various bushing specifications, meeting the press-fitting needs of multiple torsion beam 100 models without equipment replacement, reducing investment in dedicated equipment. 3. Automated positioning and detection reduce reliance on operator skills, saving manpower and processing time.

[0052] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structure made using the contents of this utility model specification and drawings, whether directly or indirectly applied to other related technical fields, shall also be within the patent protection scope of this utility model.

Claims

1. A torsion beam bushing press-fitting machine, characterized in that: The device includes a machine base, a positioning assembly mounted on the machine base for supporting and positioning a torsion beam, two mounting assemblies symmetrically arranged on the machine base, and an electrical cabinet electrically connected to the mounting assemblies. The mounting assemblies include a base capable of horizontal rotation and angle adjustment, a pressing seat slidably connected to the upper end of the base, a first drive unit electrically connected to the electrical cabinet for driving the pressing seat to reciprocate horizontally, a fixing mechanism mounted on the pressing seat for fixing the torsion beam, and a pressing mechanism. The pressing mechanism includes a pressing head corresponding to the position of the fixing mechanism, a second drive unit electrically connected to the electrical cabinet, and a guide mechanism connected to the pressing head. The pressing head can reciprocate in a direction closer to or away from the fixing mechanism under the guidance of the guide mechanism. When the pressing head moves in a direction closer to the fixing mechanism, it can press the bushing onto the torsion beam.

2. The torsion beam bushing press-fitting machine according to claim 1, characterized in that: The press-fit base includes a connecting plate slidably connected to the base and a support base disposed above the connecting plate. The end face of the support base away from the connecting plate is provided with a press-fit space recessed towards the connecting plate. The recessed press-fit space causes the support base to form a first mounting arm for mounting the fixing mechanism and a second mounting arm for mounting the press-fit mechanism. The guide mechanism is disposed on the bottom surface of the press-fit space.

3. The torsion beam bushing press-fitting machine according to claim 2, characterized in that: The support base is defined as a first end near the fixing mechanism, and the other opposite end is defined as a second end. The support base is connected to the connecting plate through a floating mechanism. The floating mechanism includes a floating limiting component disposed at the first end, a floating support component located on one side of the floating limiting component and distributed near the first end, and a floating component installed at the second end of the support base and located below the second drive unit. The floating support component is connected to the support base through a shaft connection structure, so that the support base can generate an inclination angle with the shaft connection as the fulcrum to achieve adaptive adjustment of the pressure head height.

4. The torsion beam bushing press-fitting machine according to claim 3, characterized in that: The floating limiting assembly includes two limiting lugs that are bolted to the support base and located on both sides of its first end face, and a limiting screw that is bolted to the limiting lugs one by one. The lower end of the limiting screw can abut against the connecting plate. The floating support assembly includes two support blocks connected to the upper end of the connecting plate, and the support seat is accommodated between the two support blocks; The shaft connection structure includes a shaft connection cavity that passes through the support base, bearings that are detachably connected to the support base and located at both ends of the shaft connection cavity, and a rotating shaft that passes through the shaft connection cavity and is connected to the corresponding bearings at both ends. The two ends of the rotating shaft are also shaft-connected to the support blocks at corresponding positions. The floating assembly includes an upper support plate screwed to the end face of the second end of the support base, two guide rods arranged at intervals at the lower end of the upper support plate, a return spring sleeved within the guide rods, a sleeve plate corresponding to the guide rods and screwed to the connecting plate, and a limiting ring located below the sleeve plate and screwed to the guide rods. The guide rod includes a sleeve section for sleeved with the return spring, a limiting section located at the lower end of the sleeve section with an outer diameter larger than the sleeve section, and a movable section located at the lower end of the limiting section with an outer diameter smaller than the limiting section. The return spring is located between the limiting section and the upper support plate, and the movable section can pass through the sleeve plate and connect to the limiting ring.

5. The torsion beam bushing press-fitting machine according to claim 2, characterized in that: The fixing mechanism includes a third drive unit detachably connected to the outside of the first mounting arm, a limiting seat detachably connected to the inside of the first mounting arm and capable of abutting against the torsion beam, and a fixing core with one end capable of passing through the limiting seat and the first mounting arm and connecting to the third drive unit. The third drive unit can drive the fixing core to reciprocate within the limiting seat.

6. The torsion beam bushing press-fitting machine according to claim 2, characterized in that: The second drive unit is an electric cylinder and is mounted on the second mounting arm. The pressure head is located in the pressing space, and a positioning part for positioning the bushing is provided on the end face of the pressure head near the fixing mechanism. A feeding sensor for detecting whether the pressure head has completed feeding is provided on one side of the pressure head.

7. The torsion beam bushing press-fitting machine according to claim 6, characterized in that: The guiding mechanism includes a guide seat that is detachably connected to the electric cylinder and also detachably connected to the pressure head, a guide slider screwed to the lower end of the guide seat, and a guide slide rail whose lower end is slidably connected to the guide slider. The guide slide rail is arranged along the length of the bottom surface of the pressing space, and the guide slider reciprocates along the guide slide rail to guide the reciprocating movement of the pressure head.

8. The torsion beam bushing press-fitting machine according to claim 2, characterized in that: The upper end of the base is provided with a sliding rail, and a sliding block is slidably connected to the sliding rail. The sliding block is detachably connected to the connecting plate, and the sliding block can reciprocate on the sliding rail. A first limiting mechanism and a second limiting mechanism for limiting the position of the connecting plate are respectively provided on both sides of the sliding rail.

9. The torsion beam bushing press-fitting machine according to claim 8, characterized in that: The lower end of the base is connected to a rotary drive unit and a movable wheel that can slide on the machine platform; the machine platform is provided with a rotary limiting component to limit the rotation angle of the base. The rotary limiting component includes two limiting brackets respectively located at the front and rear ends of the connecting plate, and limiting rods that can be screwed to the limiting brackets. The limiting rods can abut against the side wall of the base.

10. The torsion beam bushing press-fitting machine according to any one of claims 1-9, characterized in that: The positioning component includes two positioning mechanisms arranged at intervals and respectively distributed on one side of the base, and a clamping mechanism located between the two positioning mechanisms. The positioning mechanism includes a positioning column detachably connected to the machine tool, a positioning protrusion at the upper end of the positioning column, a support arm on one side of the positioning column extending toward the press-fitting seat, and a positioning pin on the support arm. The clamping mechanism includes a clamping column detachably connected to the machine base, a clamping rod axially connected to the clamping column at one end, a hinge seat rotatably connected to the clamping rod, and a fourth drive unit connected to the lower end of the hinge seat. A holding member is connected to the lower end of the clamping rod, and a holding groove with a shape adapted to the torsion beam is provided on the bottom surface of the holding member. The fourth drive unit can drive the holding member to move toward the workpiece so that the holding groove can clamp the torsion beam. When the holding member moves away from the workpiece, the holding groove can release the clamping on the torsion beam.

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