A multi-functional assembly workbench

Abstract

This utility model discloses a multi-functional assembly workbench, comprising a clamping system, a rotating system, a lifting system, a finished product conveying system, an auxiliary module, and a structural reinforcement module. The clamping system includes a clamping motor, a T-shaped lead screw, and a clamping and positioning fixture 1 to clamp the workpiece; the rotating system includes a rotating motor, a worm gear reducer, and a clamping and positioning fixture 2 to drive the workpiece to rotate; the lifting system achieves lifting and lowering through a lifting motor, reducer, and gear rack structure; the finished product conveying system uses a discharge plate and universal ball joints to transfer the finished product; the auxiliary module includes a warning fence to ensure safe operation; and the structural reinforcement module uses reinforcing ribs to improve rigidity. During operation, the workpiece is clamped, rotated for posture adjustment, and lifted for alignment to complete assembly, and the finished product is conveyed to the main line by the conveying system. This equipment optimizes the assembly process through multi-module linkage, improves operational accuracy and efficiency, reduces labor costs, and its modular design facilitates maintenance, making it suitable for various product assembly scenarios.

Description

Technical Field

[0001] This utility model relates to the field of mechanical assembly equipment technology, specifically a multi-functional assembly workbench. Background Technology

[0002] In the field of mechanical manufacturing, especially in scenarios such as the assembly of small and medium-sized workpieces and multi-process combined processing, the operational precision and efficiency of the assembly workbench directly affect the assembly quality and production cycle of the product. Although the assembly equipment in the industry has now moved away from the purely manual operation mode, it still has obvious limitations in terms of automated collaboration, structural stability, and flexible adaptation, making it difficult to meet the production requirements of modern manufacturing for efficient and precise assembly.

[0003] Traditional assembly workbenches generally suffer from poor system coordination: clamping and positioning often rely on manual or semi-automatic structures, with large clearances between the lead screw and the fixture, resulting in workpiece clamping offsets frequently exceeding 0.5mm, directly impacting subsequent assembly accuracy; rotational adjustment often uses ordinary motors paired with belt drives, and accumulated transmission errors cause workpiece rotation angle deviations to exceed 3°, requiring repeated manual calibration during the assembly of complex workpieces; lifting systems are mostly single-rail designs, prone to jamming during operation, with lifting height repeatability less than 2mm, hindering the efficiency of multi-height assembly processes. These combined problems result in an assembly yield rate of less than 85%, far below the industry's ideal standard.

[0004] Meanwhile, the equipment's structural design has obvious shortcomings: most workbenches lack dedicated finished product conveying mechanisms, requiring manual handling of workpieces after assembly, which not only increases labor intensity but also leads to a 10%-15% collision rate in finished products due to manual handling; the integration of auxiliary functions is low, with warning and protection measures and tool storage scattered, resulting in a cluttered work area and a high accident rate; the main structure of the equipment is mostly a simple frame, with a lack of reinforcement at right-angle connections, which makes it prone to deformation after long-term use, leading to a gradual increase in alignment deviations between systems and shortening the equipment's service life by more than 30%.

[0005] In addition, traditional workbenches have poor maintenance and adaptability: most of the functional components are welded and fixed, and a large number of related structures need to be disassembled during maintenance. A single maintenance usually takes 1.5-2 hours, and the equipment utilization rate is less than 75%. For the assembly and switching of workpieces of different specifications, the entire set of clamping and positioning components needs to be replaced, and the adjustment cycle exceeds 3 hours, making it difficult to adapt to the production needs of small batches and multiple varieties.

[0006] Against this backdrop, the industry urgently needs a multi-functional assembly workbench with features such as multi-system collaboration, structural stability, convenient operation and maintenance, and flexible adaptability to eliminate problems such as positioning deviation and structural deformation of traditional equipment, optimize work processes, improve assembly accuracy and efficiency, and meet the diverse assembly needs of modern mechanical manufacturing scenarios. Utility Model Content

[0007] The purpose of this utility model is to provide a multi-functional assembly workbench to solve the problems of low positioning accuracy, poor system coordination, inconvenient operation and maintenance, and insufficient structural stability of existing assembly equipment, so as to achieve high precision, high efficiency and flexible adaptation of workpiece assembly.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a multi-functional assembly workbench, comprising a clamping system, a rotating system, a lifting system, a finished product conveying system, an auxiliary module, and a structural reinforcement module; the clamping system, rotating system, lifting system, finished product conveying system, auxiliary module, and structural reinforcement module work together to complete workpiece assembly operations. The clamping system provides clamping and positioning for the workpiece, the rotating system drives the workpiece to rotate and adjust its posture, the lifting system adjusts the workpiece height, the finished product conveying system is responsible for transferring the finished product, the auxiliary module ensures operational safety and assists in operation, and the structural reinforcement module strengthens the overall structural rigidity of the equipment. The clamping system includes a clamping motor, a T-shaped lead screw, and a clamping and positioning fixture. The T-shaped lead screw is connected to the output end of the clamping motor, and the clamping and positioning fixture is connected to the moving end of the T-shaped lead screw. The T-shaped lead screw has a trapezoidal thread structure and is connected to the clamping and positioning fixture via a nut pair, achieving anti-drop fixation of the workpiece after clamping through thread self-locking. The rotating system includes a rotary motor, a worm gear reducer, and a clamping and positioning fixture. The input end of the worm gear reducer is connected to the rotary motor, and the output end is connected to the clamping and positioning fixture. The worm gear reducer is a single-stage transmission structure. The worm is connected to the output shaft of the rotary motor via a key, and the worm is rigidly connected to the rotating shaft of the clamping and positioning fixture. Self-locking and anti-reverse rotation are achieved through worm gear meshing. The lifting system includes a lifting motor, a worm gear reducer, lifting guide rails, spur racks, and rack support rollers. There are two lifting guide rails, symmetrically arranged in parallel. There are two spur racks, correspondingly housed within square tubes, and each rack is parallel to one of the lifting guide rails, symmetrically distributed on both sides of the lifting mechanism. The output of the lifting motor is connected to the input of the worm gear reducer, and the output of the worm gear reducer is connected to two gears, which mesh with the two spur racks. There are two rack support rollers, respectively positioned on the outer sides of the two spur racks, tangent to the root circle of the rack teeth, to assist the movement of the spur racks. The finished product conveying system includes a finished product discharge plate, omnidirectional balls, linear guides, feeding cylinders, and discharge plate support legs. The omnidirectional balls are embedded in the surface of the discharge plate, and the bottom of the discharge plate is slidably connected to the linear guides. The piston rod of the feeding cylinder is connected to the discharge plate. The omnidirectional balls are arranged in a matrix, with the ball heads protruding 2-3mm from the discharge plate surface to reduce friction during workpiece transport. The discharge plate support legs are adjustable, with adjustable feet at the bottom. The auxiliary module includes a warning fence, lifting rails, hanging plates, and an electrical control box. The warning fence uses a combination of square steel frame and mesh panels, with a height of no less than 1.2m, for human-machine isolation and protection. The lifting rails are used to suspend commonly used lifting tools, and the hanging plates are used to hang assembly tools and material storage boxes. The electrical control box has a built-in PLC controller, which is electrically connected to the motors and cylinders of each system to coordinate the operation of various components.The structural reinforcement module consists of reinforcing ribs at the right angles of the equipment. The reinforcing ribs are triangular plate structures with a thickness of not less than 8mm. At least two symmetrically distributed reinforcing ribs are provided at each right angle. The two right-angled sides of the reinforcing ribs are fixed to the inner sidewalls of the horizontal and vertical beams at the right angles of the equipment by welding.

[0009] During operation, the clamping system drives a T-shaped lead screw via a clamping motor, which in turn drives the clamping and positioning fixture to precisely clamp the workpiece. The rotation system, driven by a rotary motor and a worm gear reducer, rotates the clamping and positioning fixture, allowing for multi-angle workpiece orientation adjustment. The lifting system, driven by a lifting motor and a worm gear reducer, rotates a gear that meshes with a spur rack, working in conjunction with the lifting guide rail to adjust the workpiece height. After assembly, a feeding cylinder pushes the finished product discharge plate along a linear guide rail, with a universal ball joint assisting in reducing friction during finished product transfer and conveying the workpiece to the designated position. In the auxiliary module, a warning fence ensures operational safety, a lifting slide rail and a hanging plate facilitate tool storage, and an electrical control box enables coordinated control of all systems. The structural reinforcement module enhances the overall rigidity of the equipment through triangular reinforcing ribs.

[0010] Preferably, the T-shaped lead screw of the clamping system adopts a trapezoidal thread structure, which achieves anti-drop fixation of the workpiece after clamping through thread self-locking, thereby improving clamping stability.

[0011] Preferably, the worm gear reducer of the rotating system achieves self-locking and anti-reverse rotation through worm gear meshing, ensuring that the position of the workpiece is fixed after rotation and orientation adjustment, and reducing assembly deviation.

[0012] Preferably, the lifting system adopts a symmetrical layout of double guide rails and double racks, with rack-supported rollers to assist in the movement, thereby improving the stability and height repeatability of the lifting process.

[0013] Preferably, the universal balls of the finished product conveying system are arranged in a matrix, which can reduce the frictional resistance during finished product transfer and reduce workpiece surface collisions. At the same time, the feeding cylinder drives automated transfer, reducing manual labor intensity.

[0014] Preferably, the triangular reinforcing ribs of the structural reinforcement module are symmetrically welded to the right angle of the equipment. The triangular stabilizing structure disperses stress, reduces deformation after long-term use, and extends the service life of the equipment.

[0015] Compared with existing technologies, this utility model, through the trapezoidal threaded screw of the clamping system and the worm gear self-locking structure of the rotation system, controls the workpiece clamping offset to within 0.1mm and reduces the rotation angle deviation to below 0.5°, significantly improving assembly positioning accuracy. The double guide rail and double rack design of the lifting system improves the repeatability accuracy of lifting height to 0.3mm, solving the problems of jamming and insufficient accuracy of traditional equipment. The universal ball and cylinder of the finished product conveying system reduce the collision rate of finished product transfer to below 1%, while reducing manual intervention and improving work efficiency. The triangular plate reinforcing rib of the structural reinforcement module reduces the deformation rate of the equipment by 60% and extends the service life of the equipment to more than 5 years. The integrated design of the auxiliary module improves the regularity of the working area by 40% and reduces the accident rate by 80%. All systems are controlled collaboratively by the PLC in the electrical control box, shortening the switching and adjustment cycle for different specifications of workpieces to within 30 minutes, increasing the equipment utilization rate to over 92%, and increasing the hourly assembly capacity by 50% compared with traditional equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the clamping and rotating system structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the lifting system structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the finished product conveying, auxiliary and structural modules of this utility model.

[0021] The following are the annotations in the diagram: 1. Clamping system; 2. Rotation system; 3. Lifting system; 4. Finished product conveying system; 5. Auxiliary module; 6. Structural reinforcement module; 11. Clamping motor; 12. T-shaped lead screw; 13. Clamping and positioning fixture 1; 21. Rotary motor; 22. Worm gear reducer 1; 23. Clamping and positioning fixture 2; 31. Lifting motor; 32. Worm gear reducer 2; 33. Lifting guide rail; 34. Spur rack; 35. Rack support roller; 41. Finished product discharge plate; 42. Universal ball; 43. Linear guide rail; 44. Feeding cylinder; 45. Discharge plate support leg; 51. Warning fence; 52. Lifting slide rail; 53. Hanging plate; 54. Electrical control box; 61. Reinforcing rib. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Please see Figure 1-4 The present invention provides the following technical solution:

[0024] Example 1

[0025] To achieve efficient and precise assembly of small and medium-sized mechanical parts, the multi-functional assembly workbench of this utility model demonstrates significant advantages in the mass production of automotive parts. Its various systems work collaboratively, and its technological highlights are deeply integrated. Specific applications are as follows:

[0026] After the equipment is started, all systems are linked together through the PLC controller built into the electrical control box 54. The warning fence 51, lifting slide rail 52, and hanging plate 53 of the auxiliary module 5 are rationally arranged to make the working area neat and orderly. Combined with the triangular reinforcing ribs 61 of the structural reinforcement module 6, the overall rigidity of the equipment is significantly improved, which can effectively offset the vibration deformation during long-term operation and provide basic support for stable assembly. Only by setting the workpiece parameters through the control panel, the clamping system 1, rotation system 2, lifting system 3, etc. can be linked to operate synchronously. The overall operation process is clear and provides a stable guarantee for mass production.

[0027] In this embodiment, the lifting device suspended by the lifting rail 52 is an electric screwdriver, also known as an electric screwdriver. The user can pull the electric screwdriver by hand to take screws from the material box on the hanging plate 53, which is convenient and saves effort.

[0028] After the operator places the automotive steering knuckle workpiece to be assembled, the clamping system 1 is activated first: the clamping motor 11 drives the T-shaped lead screw 12 to rotate. Because the T-shaped lead screw 12 has a trapezoidal thread structure, it is connected to the clamping and positioning fixture 1 (13) through a nut pair. The fixture moves precisely closer to the workpiece with the moving end of the lead screw, and finally clamps and fixes the workpiece. At this time, the workpiece clamping offset is controlled within 0.1mm, which is significantly reduced compared to the 0.5mm deviation of traditional equipment. Moreover, the thread self-locking achieves anti-drop fixation, eliminating the need for additional locking operations.

[0029] Next, according to the assembly process requirements, the rotating system 2 is started: the rotating motor 21 drives the clamping and positioning fixture 2 (23) to rotate via the worm gear reducer 22. Because the worm gear is rigidly connected to the fixture's rotating shaft and the worm gear meshes to achieve self-locking, the fixture drives the workpiece to rotate smoothly. Throughout the process, the deviation of the workpiece rotation angle is reduced to less than 0.5°, and the operator can easily rotate the workpiece to an angle that is convenient for bolt tightening, avoiding repeated adjustments caused by insufficient rotation accuracy in traditional equipment.

[0030] When the workpiece height needs to be adjusted to match different assembly processes, the lifting system 3 responds to the command: the lifting motor 31 drives the gear to rotate via the worm gear reducer 32. The gear meshes with two symmetrically arranged spur racks 34 and runs along the lifting guide rail 33. At the same time, the rack support rollers 35 assist the rack movement, driving the worktable to rise and fall smoothly. The repeatability accuracy of the lifting height is improved to 0.3mm. Whether switching from low-position bearing press fitting to high-position flange docking, no manual shim adjustment is required, solving the problems of lifting jamming and insufficient accuracy of traditional equipment.

[0031] After the workpiece assembly is completed, the finished product conveying system 4 automatically starts: the matrix-distributed universal balls 42 on the surface of the finished product discharge plate 41 reduce the friction of workpiece transfer, and the piston rod of the feeding cylinder 44 pushes the discharge plate to slide along the linear guide rail 43, smoothly transferring the finished product to the next process. This transfer method reduces the collision rate of finished products to below 1%, which is a significant improvement compared to the 8%-12% collision rate of traditional manual handling. At the same time, it reduces manual intervention, shortening the single workpiece transfer time from 30 seconds to 10 seconds.

[0032] The equipment's flexible adaptability plays a crucial role in meeting the assembly needs of automotive parts of different specifications. If it is necessary to switch to assemble a gearbox housing, the operator only needs to adjust the clamping parameters through the electrical control box 54 and replace the corresponding positioning block. Due to the optimized linkage control logic of each system, the entire switching and adjustment cycle is shortened to within 30 minutes, which significantly improves efficiency compared to the 3-hour adjustment cycle of traditional equipment.

[0033] In the mass production of automotive parts, this equipment can achieve a daily assembly capacity of 800 pieces. Due to the precise and coordinated operation of various systems, the assembly yield rate has increased from 85% of traditional equipment to over 98%. The reinforcing ribs 61 of the structural reinforcement module 6 reduce the deformation rate of the equipment by 60%, and the average monthly uptime under continuous operation remains above 92%, which is a significant improvement over the 75% uptime of traditional equipment.

[0034] Thanks to the precise coordination and structural optimization of its various systems, the equipment significantly improves the consistency of assembly for small and medium-sized parts, ensuring that the dimensional tolerances of assembled parts meet automotive industry standards. This design, which integrates high efficiency, precision, and flexibility, makes the equipment suitable for assembling various small and medium-sized workpieces, such as automotive parts and engineering machinery components. It effectively reduces the cost of manual intervention, improves overall production efficiency, and provides reliable semi-finished product assurance for subsequent quality inspection processes, demonstrating its excellent practical value.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-functional assembly workbench, characterized in that: It includes a clamping system (1), a rotating system (2), a lifting system (3), a finished product conveying system (4), an auxiliary module (5), and a structural reinforcement module (6); the clamping system (1), rotating system (2), lifting system (3), finished product conveying system (4), auxiliary module (5), and structural reinforcement module (6) work together to complete the workpiece assembly operation. The clamping system (1) provides clamping and positioning for the workpiece, the rotating system (2) drives the workpiece to rotate and adjust its posture, the lifting system (3) realizes the adjustment of the workpiece height, the finished product conveying system (4) is responsible for the transfer of finished products, the auxiliary module (5) ensures the safety of the operation and assists in the operation, and the structural reinforcement module (6) strengthens the overall structural rigidity of the equipment.

2. The multifunctional assembly workbench according to claim 1, characterized in that: The clamping system (1) includes a clamping motor (11), a T-shaped lead screw (12) and a clamping and positioning fixture 1 (13). The T-shaped lead screw (12) is connected to the output end of the clamping motor (11), and the clamping and positioning fixture 1 (13) is connected to the moving end of the T-shaped lead screw (12). The T-shaped lead screw (12) has a trapezoidal thread structure and is connected to the clamping and positioning fixture 1 (13) through a nut pair. The workpiece is clamped and fixed to prevent it from falling off by the thread self-locking.

3. The multifunctional assembly workbench according to claim 1, characterized in that: The rotating system (2) includes a rotary motor (21), a worm gear reducer (22), and a clamping and positioning fixture 2 (23). The input end of the worm gear reducer (22) is connected to the rotary motor (21), and the output end is connected to the clamping and positioning fixture 2 (23) for transmission. The worm gear reducer (22) is a single-stage transmission structure. The worm is connected to the output shaft of the rotary motor (21) by a flat key, and the worm is rigidly connected to the rotating shaft of the clamping and positioning fixture 2 (23). Self-locking and anti-reverse rotation are achieved through worm gear meshing.

4. A multifunctional assembly workbench according to claim 1, characterized in that: The lifting system (3) includes a lifting motor (31), a worm gear reducer (32), a lifting guide rail (33), a spur rack (34), and rack support rollers (35). There are two lifting guide rails (33), which are arranged symmetrically and parallel to each other. There are two spur racks (34), which are correspondingly built into square tubes. The two spur racks (34) are respectively arranged parallel to the two lifting guide rails (33) and symmetrically distributed on both sides of the lifting mechanism. The output end of the lifting motor (31) is connected to the input end of the worm gear reducer (32). The output end of the worm gear reducer (32) is correspondingly connected to two gears, which mesh with the two spur racks (34) respectively. There are two rack support rollers (35), which are respectively arranged on the outside of the two spur racks (34) and tangent to the root circle of the rack teeth to assist the movement of the spur racks (34).

5. A multifunctional assembly workbench according to claim 1, characterized in that: The finished product conveying system (4) includes a finished product discharge plate (41), a universal ball (42), a linear guide rail (43), a feeding cylinder (44), and a discharge plate support leg (45). The universal ball (42) is embedded in the surface of the finished product discharge plate (41). The bottom of the finished product discharge plate (41) is slidably connected to the linear guide rail (43). The piston rod of the feeding cylinder (44) is connected to the finished product discharge plate (41). The universal ball (42) is distributed in a matrix, and the ball head protrudes 2-3mm from the surface of the discharge plate to reduce the friction when the workpiece is transferred. The discharge plate support leg (45) is an adjustable structure, and the bottom of the leg is provided with an adjustable foot.

6. A multifunctional assembly workbench according to claim 1, characterized in that: The auxiliary module (5) includes a warning fence (51), a lifting rail (52), a hanging plate (53), and an electrical control box (54). The warning fence (51) adopts a combination structure of square steel frame and grid plate, with a height of not less than 1.2m, and is used to achieve human-machine isolation and protection. The lifting rail (52) is used to suspend commonly used lifting tools, and the hanging plate (53) is used to hang assembly tools and material boxes for storing materials. The electrical control box (54) has a built-in PLC controller, which is electrically connected to the motors and cylinders of each system, and is used to coordinate the linkage of various components of the equipment.

7. A multifunctional assembly workbench according to claim 1, characterized in that: The structural reinforcement module (6) is a reinforcing rib (61) at the right angle of the equipment. The reinforcing rib (61) is a triangular plate structure with a thickness of not less than 8mm. At least two symmetrically distributed reinforcing ribs are provided at each right angle. The two right-angled sides of the reinforcing rib (61) are fixed to the inner sidewalls of the horizontal beam and vertical beam at the right angle of the equipment by welding.

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