Surface polishing device for wrench manufacturing

Abstract

The present application relates to wrench manufacturing technical field, specifically to a kind of surface polishing device for wrench manufacturing, including clamping assembly, polishing assembly, clamping assembly is fixedly connected with polishing assembly;Clamping assembly includes base, bidirectional screw rod is rotatably installed in base;The present application is formed by being provided with multiple mounting seat's cross rotating disc and rotating motor, multiple station rotary structure, so that feeding, polishing and discharging can be carried out simultaneously in different stations, greatly reduce downtime auxiliary time, realize continuous production, and the process can utilize bidirectional screw rod and guide rod drive two fixture assemblies automatic centering movement, again cooperate multiple nested sleeve, elastic element and the combination design of limiting rod and clamping conical block, can reliably clamp various types and specifications of wrench, such as hexagonal wrench, open-end wrench and dual-purpose wrench, without frequent replacement fixture, significantly improve the versatility and change production efficiency of device, solve the problem of poor adaptability of traditional fixture, adjustment is complicated.

Description

Technical Field

[0001] This invention relates to the field of wrench manufacturing technology, and more specifically to a surface polishing device for wrench manufacturing. Background Technology

[0002] As an indispensable hand tool in mechanical assembly and maintenance, the quality of a wrench directly affects the operator's experience and the tool's service life. The production and processing of wrenches typically involves multiple processes, including forging, edge trimming, heat treatment, and surface polishing. Among these, surface polishing is the key step that determines the final surface quality and performance of the wrench. Polishing not only removes oxide scale, burrs, and minor imperfections from the wrench surface, improving its appearance, but also effectively reduces surface roughness, enhancing its corrosion resistance and fatigue resistance. Therefore, developing efficient and stable wrench surface polishing equipment is of great significance for improving wrench production efficiency and product quality.

[0003] Currently, various technical solutions have been proposed for polishing the surface of wrenches. For example, patent document CN201710815970.0 discloses a wrench servo rotating component, including a wrench fixing device, a polishing device, a frame, and a moving base mechanism. The frame is equipped with the moving base mechanism and the polishing device located in front of the moving base mechanism, and the moving base mechanism is equipped with the wrench fixing device. The wrench fixing device includes a mounting base, several clamping plates, several springs, a first slot, two first supports, a screw body, a fastening nut, a first clamping mechanism, a second clamping mechanism, and two support seats. The front and rear ends of the mounting base are respectively equipped with a first clamping mechanism and a second clamping mechanism for clamping the wrench handle and the wrench head. The mounting base has a first slot in the middle, and a first support is located at the bottom of the mounting base. The first support has a screw body located directly below the first slot. This solution, through the design of the clamping mechanism, can be applied to wrenches of various sizes and improves the uniformity of polishing.

[0004] For example, patent document CN202410982097.4 discloses a polishing device for producing double-ended wrenches, belonging to the technical field of double-ended wrench polishing equipment. This device includes a workbench, with a fixed bracket for holding the double-ended wrench fixedly installed on one side of the upper part of the workbench. A limit plate is inserted into one end of the bracket. An L-shaped plate is fixedly installed on the other side of the upper part of the workbench, with a grinding disc driven by a motor at one end of the L-shaped plate. A square hole is opened in the middle of the upper part of the workbench, with a U-shaped baffle fixedly installed above the square hole. Cleaning and cooling components are installed on both sides of the U-shaped baffle, and a liquid outlet is fixedly installed at the lower end of the square hole, with a filter assembly installed inside the liquid outlet. This solution uses a ring-shaped filter screen for double filtration of the waste generated during polishing, uses a cleaning brush to clean the surface of the filter screen, and blows the waste out of the mesh through an air outlet pipe, simultaneously achieving cooling during the polishing process and recycling of water resources.

[0005] However, in practical application, the inventors believe that the following defects exist: Traditional polishing methods often involve single-piece sequential operations, requiring frequent machine stops for loading and unloading, resulting in long auxiliary times, insufficient continuous production capacity, and significantly constrained production efficiency. Moreover, traditional polishing equipment has a relatively simple polishing function, mostly only able to complete mechanical grinding and polishing, lacking the composite processing capability to integrate mechanical polishing and chemical electrolytic polishing into one, and making it difficult to flexibly switch polishing methods at the same workstation to meet different surface quality requirements; Furthermore, existing fixtures have poor versatility for different types of wrenches (such as box wrenches, open-end wrenches, and combination wrenches), and the process of changing production and adjusting is cumbersome, which further limits the applicability and automation level of the equipment.

[0006] In view of this, there is an urgent need to design a surface polishing device for wrench manufacturing to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide a surface polishing apparatus for wrench manufacturing, so as to overcome the above-mentioned shortcomings of the prior art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A surface polishing device for wrench manufacturing includes a clamping assembly and a polishing assembly, wherein the clamping assembly and the polishing assembly are fixedly connected. The clamping assembly includes a base, a bidirectional lead screw is rotatably mounted inside the base, a drive motor is fixedly mounted on one outer wall of the base, and the output end of the drive motor is drivenly connected to one end of the bidirectional lead screw. Two guide rods are fixedly installed inside the base, and two clamping assemblies are slidably installed between the two guide rods. The two clamping assemblies are connected to the bidirectional lead screw thread transmission. The clamping assembly includes a sliding frame and a rotary motor. The sliding frame is connected to the bidirectional lead screw via a threaded transmission, and the sliding frame is slidably mounted on the two guide rods. A cross-shaped rotating disk is rotatably mounted on one side of the sliding frame. The output end of the rotary motor is connected to the cross-shaped rotating disk via a key connection. Multiple mounting seats are fixedly installed on one side of the cross-shaped rotating disk. An internal hexagonal mounting rod is rotatably mounted inside each mounting seat. One end of the internal hexagonal mounting rod is slidably fitted with a multi-stage nested sleeve. An elastic element is provided between the inner wall of the multi-stage nested sleeve and one end of the internal hexagonal mounting rod. A fixing plate is bolted to the output end of the multi-stage nested sleeve, and a limit rod is fixedly installed on one side of the outer wall of the fixing plate. A safety device is fixedly installed on the other side of the outer wall of the fixing plate. The mounting housing has a sliding rod bolted inside. Two sliding plates are slidably connected to the sliding rod. A clamping cone block is bolted to the outer wall of one side of the sliding plate. Connecting springs are bolted to the inner walls of the two sliding plates facing the mounting housing. The sliding rod passes through the connecting springs. A wrench such as a box wrench can be fixed between two opposing limit rods on the two clamping assemblies. A wrench such as a two-way wrench can be fixed between the opposing limit rods and the clamping cone block on the two clamping assemblies. An open-end wrench or a two-way wrench can be fixed between the two opposing clamping cone blocks on the two clamping assemblies. A through hole is provided on one side of the outer wall of the sliding frame, and a mounting groove is provided on one side of the outer wall of the sliding frame; The clamping assembly is also provided with a transmission assembly on one side. The transmission assembly includes a base plate, a guide rail and a connecting frame. The base plate is fixedly installed on the outer wall of one side of the sliding frame. A feed motor is fixedly installed on the base plate. The output end of the feed motor is connected to a transmission screw, and the transmission screw is located inside the mounting groove. The guide rail is fixedly installed on the sliding frame, the connecting frame is slidably installed on the guide rail and is threadedly connected to the transmission screw, a power motor is fixedly installed on the connecting frame, and a hexagonal transmission column is fixedly provided at the output end of the power motor, and one of the hexagonal transmission columns passes through the through hole; The feed motor drives the connecting bracket to move so that the hexagonal transmission column can be inserted into or disengaged from the internal hexagonal mounting rod, thereby driving the wrench, which is restricted by the limiting rod, to rotate during polishing.

[0009] Furthermore, the outer walls on both sides of the top of the base are provided with mounting grooves, and a lifting cylinder is fixedly installed at the bottom of the inner wall of the mounting groove. A top plate is fixedly installed at the output end of the lifting cylinder.

[0010] Furthermore, the polishing assembly includes a fixed base, on which support plates are fixedly installed on both outer walls of the top of the fixed base, and a sliding groove is formed on one outer wall of the top of the fixed base.

[0011] Furthermore, a linear motor module is fixedly installed at the top of the two support plates, a lifting cylinder is fixedly installed at the output end of the linear motor module, a servo motor rotating component is fixedly installed at the output end of the lifting cylinder, and a mounting rotating disk is bolted to the output end of the servo motor rotating component. Three grinding motors arranged in a circular array are bolted to the top outer wall of the mounting rotating disk, and a grinding block is fixedly installed at the output end of the grinding motor.

[0012] Furthermore, two optical rods are fixedly installed inside the sliding groove, and a translation cylinder is fixedly installed on one side of the outer wall of the fixed seat, with the output end of the translation cylinder located inside the sliding groove.

[0013] Furthermore, the polishing assembly also includes a support plate, and connecting plates are fixedly installed on the outer walls of both sides of the bottom of the support plate. The support plate is slidably mounted on the two polishing rods through the two connecting plates.

[0014] Furthermore, the polishing assembly also includes an electrochemical polishing box, on which two electrode modules are bolted to one side of the outer wall. The two electrode modules are an anode and a cathode. The electrode modules are connected to the workshop electrolysis control equipment via wires. The inner wall of the electrochemical polishing box is coated with an insulating layer. The electrochemical polishing box is detachably installed on the top outer wall of the tray. The electrochemical polishing box contains polishing electrolyte and is configured to be connected to the workshop's electrolysis power supply equipment.

[0015] Furthermore, through grooves are provided on both outer walls of the top two sides of the pallet; when electrolysis is required, the lifting cylinder is activated to drive the top plate to push the electrolytic chemical polishing box upward, so that the wrench rotated to the bottom of the cross rotating disk can be immersed in the electrolytic chemical polishing box for chemical electrolytic polishing.

[0016] Furthermore, a cover plate is fixedly installed between the two support plates. When the servo motor rotating parts are polished, the electrochemical polishing box is sealed with the cover plate to prevent polishing debris from falling into the electrochemical polishing box.

[0017] Furthermore, an electrical control box is bolted to one side of the outer wall of the polishing assembly, and the electrical control box is electrically connected to the electronic equipment on the clamping assembly and the polishing assembly respectively via wires.

[0018] In the above technical solution, the surface polishing device for wrench manufacturing provided by the present invention has the following beneficial effects: (1) This invention forms a multi-station rotary structure by setting a cross rotating disk with multiple mounting seats and a rotary motor, so that loading, polishing and unloading can be carried out simultaneously at different stations, greatly reducing downtime and achieving continuous production. In addition, the process can use a two-way screw and guide rod to drive two clamping components to move automatically in the center. With the combination design of multi-level nested sleeves, elastic elements and limit rods and clamping cone blocks, it can reliably clamp various types and specifications of wrenches such as box wrenches, open wrenches and dual-purpose wrenches, without the need to frequently change clamps, which significantly improves the versatility and production change efficiency of the device and solves the problems of poor adaptability and complicated adjustment of traditional clamps.

[0019] (2) When the cross-shaped rotating disk rotates the wrench to the lowest position, the lifting cylinder pushes the electrochemical polishing box to rise, so that the wrench is immersed in the polishing electrolyte for chemical electrochemical polishing. When only mechanical grinding is performed, the electrochemical polishing box is sealed with the cover plate to prevent debris from falling into the electrolyte. Thus, the two methods of mechanical polishing and electrochemical polishing can be flexibly switched on the same device to meet different surface quality requirements and overcome the defects of the traditional solution with single function.

[0020] (3) The present invention uses a linear motor module, a lifting cylinder, a servo motor rotating part and multiple grinding motors and grinding blocks distributed in a ring on the mounting rotating disk. It can automatically switch grinding blocks according to the curved surface shape of different parts such as the wrench head and handle, and adjust the grinding posture to achieve fine following grinding of complex contours, effectively improving polishing uniformity and surface quality.

[0021] (4) When the present invention performs mechanical polishing, the power motor drives the wrench fixed by the limiting rod or the clamping cone block to rotate through the hexagonal transmission column, thereby achieving uniform circumferential polishing of the workpiece, avoiding the problem of local over-polishing or uneven polishing, improving the uniformity of polishing and surface quality. After polishing is completed, the transmission can be disengaged in time without affecting the switching of work positions. The structure is compact and the transmission is reliable.

[0022] (5) The present invention can elastically float and clamp the conical block. With the limiting effect of the elastic element and the limiting rod in the multi-level nested sleeve, it can adapt to the slight size difference of the wrench blank while ensuring the clamping force, effectively avoids damaging the workpiece surface, and ensures clamping stability and clamping accuracy. In addition, the multi-level nested sleeve can extend and adjust the clamping position, which enhances the adaptability of the device. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of a surface polishing apparatus for wrench manufacturing according to the present invention.

[0025] Figure 2 This is a schematic diagram of the clamping assembly structure provided in an embodiment of a surface polishing apparatus for wrench manufacturing according to the present invention.

[0026] Figure 3 This is a schematic diagram of a clamping assembly structure with an unfolded clamping component, provided in an embodiment of a surface polishing apparatus for wrench manufacturing according to the present invention.

[0027] Figure 4 This is a schematic diagram of the fixture assembly structure provided in an embodiment of a surface polishing apparatus for wrench manufacturing according to the present invention.

[0028] Figure 5 This is a schematic diagram of a multi-level nested sleeve, fixing plate, mounting shell, sliding rod, and clamping conical block structure provided in an embodiment of a surface polishing device for wrench manufacturing according to the present invention.

[0029] Figure 6 This is a schematic diagram of the transmission component structure provided in an embodiment of a surface polishing apparatus for wrench manufacturing according to the present invention.

[0030] Figure 7 This is a schematic diagram of the polishing component structure provided in an embodiment of a surface polishing apparatus for wrench manufacturing according to the present invention.

[0031] Figure 8 This is a schematic diagram of the lifting cylinder, mounting rotary table, grinding motor, and grinding block structure provided in an embodiment of a surface polishing device for wrench manufacturing according to the present invention.

[0032] Figure 9 This is a schematic diagram of the polishing operation planar structure of the clamping assembly, top plate, electrochemical polishing box, and grinding block provided in an embodiment of the surface polishing device for wrench manufacturing according to the present invention.

[0033] Explanation of reference numerals in the attached figures: 1. Clamping assembly; 2. Polishing assembly; 3. Electrical control box; 4. Base; 5. Two-way lead screw; 6. Guide rod; 7. Drive motor; 8. Mounting slot; 9. Lifting cylinder; 10. Top plate; 11. Clamping assembly; 12. Transmission assembly; 13. Sliding frame; 14. Through hole; 15. Mounting slot; 16. Cross rotary disk; 17. Mounting base; 18. Hexagonal socket mounting rod; 19. Multi-stage nested sleeve; 20. Limiting rod; 21. Rotary motor; 22. Base plate; 23. Guide rail; 24. Feed motor; 25. Transmission lead screw; 26. Connecting frame; 27. 1. Power motor; 28. Hexagonal transmission column; 29. ​​Fixed base; 30. Support plate; 31. Sliding groove; 32. Smooth rod; 33. Translation cylinder; 34. Cover plate; 35. Support plate; 36. Connecting plate; 37. Electrolytic chemical polishing box; 38. Linear motor module; 39. Lifting cylinder; 40. Servo rotating part; 41. Through groove; 42. Electrode module; 43. Fixed plate; 44. Mounting shell; 45. Sliding rod; 46. Connecting spring; 47. Slide plate; 48. Clamping conical block; 49. Mounting rotary disk; 50. Grinding motor; 51. Grinding block. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] like Figure 1-9 As shown in the figure, an embodiment of the present invention provides a surface polishing device for wrench manufacturing, including a clamping component 1 and a polishing component 2, wherein the clamping component 1 and the polishing component 2 are fixedly connected. The clamping assembly 1 includes a base 4, a bidirectional lead screw 5 is rotatably mounted inside the base 4, and a drive motor 7 is fixedly mounted on one side of the outer wall of the base 4, and the output end of the drive motor 7 is drivenly connected to one end of the bidirectional lead screw 5. Two guide rods 6 are fixedly installed inside the base 4, and two clamping assemblies 11 are slidably installed between the two guide rods 6. The two clamping assemblies 11 are threadedly connected to the bidirectional lead screw 5. The fixture assembly 11 includes a sliding frame 13 and a rotary motor 21. The sliding frame 13 is threadedly connected to the bidirectional lead screw 5, and the sliding frame 13 is slidably mounted on two guide rods 6. A cross-shaped rotating disk 16 is rotatably mounted on one side of the outer wall of the sliding frame 13. The output end of the rotary motor 21 is connected to the cross-shaped rotating disk 16 via a key connection. Multiple mounting seats 17 are fixedly installed on one side of the outer wall of the cross-shaped rotating disk 16. An internal hexagonal mounting rod 18 is rotatably mounted inside the mounting seat 17. One end of the internal hexagonal mounting rod 18 is slidably sleeved with a multi-stage nested sleeve 19. An elastic element is provided between the inner wall of the multi-stage nested sleeve 19 and one end of the internal hexagonal mounting rod 18. A fixing plate 43 is bolted to the output end of the multi-stage nested sleeve 19. A limit rod 20 is fixedly installed on one side of the outer wall of the fixing plate 43, and a mounting shell 44 is fixedly installed on the other side of the outer wall of the fixing plate 43. Furthermore, a sliding rod 45 is bolted inside the mounting housing 44, and two sliding plates 47 are slidably sleeved on the outside of the sliding rod 45. A clamping cone block 48 is bolted on one side of the outer wall of the sliding plate 47. A connecting spring 46 is bolted on each side of the inner wall of the two sliding plates 47 facing the mounting housing 44. The sliding rod 45 passes through the connecting spring 46. A wrench such as a box wrench can be fixed between the two limiting rods 20 facing each other on the two clamping assemblies 11. A wrench such as a two-way wrench can be fixed between the limiting rods 20 facing each other on the two clamping assemblies 11 and the clamping cone block 48. An open-end wrench or a wrench can be fixed between the two clamping cone blocks 48 facing each other on the two clamping assemblies 11. A through hole 14 is provided on one side of the outer wall of the sliding frame 13, and an installation groove 15 is provided on one side of the outer wall of the sliding frame 13. A transmission assembly 12 is also provided on one side of the clamp assembly 11. The transmission assembly 12 includes a base plate 22, a guide rail 23 and a connecting frame 26. The base plate 22 is fixedly installed on the outer wall of one side of the sliding frame 13. A feed motor 24 is fixedly installed on the base plate 22. The output end of the feed motor 24 is connected to a transmission screw 25, and the transmission screw 25 is located inside the mounting groove 15. The guide rail 23 is fixedly installed on the sliding frame 13, the connecting frame 26 is slidably installed on the guide rail 23 and is threadedly connected to the transmission screw 25, the power motor 27 is fixedly installed on the connecting frame 26, and a hexagonal transmission column 28 is fixedly provided at the output end of the power motor 27, and one of the hexagonal transmission columns 28 will pass through the through hole 14. The feed motor 24 drives the connecting bracket 26 to move so that the hexagonal drive column 28 can be inserted into or disengaged from the internal hexagonal mounting rod 18, thereby driving the wrench, which is restricted by the limit rod 20, to rotate during polishing by the power motor 27.

[0036] Specifically, in this embodiment, it includes a clamping component 1 and a polishing component 2, with the clamping component 1 and the polishing component 2 fixedly connected. The clamping assembly 1 includes a base 4, inside which a bidirectional lead screw 5 is rotatably mounted. The bidirectional lead screw 5 is driven to rotate by a drive motor 7, and the two sliding frames 13 are synchronously clamped in opposite directions or released in opposite directions by the left and right helical threads. The drive motor 7 is fixedly mounted on one outer wall of the base 4. The drive motor 7 provides power to the bidirectional lead screw 5 and achieves precise control of the clamping force of the wrench through a torque control mode. The drive motor 7 rotates forward to drive the bidirectional lead screw 5 to clamp the sliding frames 13 in opposite directions; it stops after reaching the set torque; it releases when it rotates in reverse. The drive motor 7 is preferably an 86HS85-5004D stepper motor; and the output end of the drive motor 7 is connected to one end of the bidirectional lead screw 5. Two guide rods 6 are fixedly installed inside the base 4. The guide rods 6 provide precise linear guidance for the two sliding frames 13, withstand the overturning moment during clamping, ensure that the two cross rotating disks 16 are always coaxially aligned, constrain the sliding frames 13 to move in a straight line, and ensure the coaxiality of the two cross rotating disks 16. Two clamping assemblies 11 are slidably installed between the two guide rods 6. The two clamping assemblies 11 are threadedly connected to the bidirectional lead screw 5. The fixture assembly 11 includes a sliding frame 13 and a rotary motor 21. The sliding frame 13, as the main load-bearing structural component of the fixture assembly 11, moves linearly on the bidirectional lead screw 5 and the guide rod 6, and is used to install the cross rotary disk 16 and its drive and transmission components. The sliding frame 13 is threadedly driven to the bidirectional lead screw 5 and slides on the guide rod 6, driving the cross rotary disk 16 to move as a whole to clamp or release the wrench. The rotary motor 21 drives the cross rotary disk 16 to rotate 90 degrees counterclockwise to switch positions, realizing the flow from clamping position to mechanical polishing position to chemical electrolysis position. The rotary motor 21 is preferably a 110BYG350D + reducer. The sliding frame 13 is threadedly connected to the bidirectional lead screw 5, and the sliding frame 13 is slidably mounted on the two guide rods 6. A cross-shaped rotary disk 16 is rotatably mounted on one side of the outer wall of the sliding frame 13. As a core component for multi-station rotation, the cross-shaped rotary disk 16 has four mounting seats 17 evenly distributed around its circumference. Driven by a rotary motor 21, it facilitates the transfer of workpieces between different stations. The cross-shaped rotary disk 16, driven by the rotary motor 21, causes the limit rod 20 and the wrench to revolve around a horizontal axis. A 90-degree counter-clockwise rotation sends the wrench into the mechanical polishing station. The output of the rotary motor 21 is connected to the cross-shaped rotary disk 16 via a key. Multiple mounting seats 17 are fixedly mounted on one side of the outer wall of the cross-shaped rotary disk 16. Each mounting seat 17 is fixed to the outer edge of the cross-shaped rotary disk 16 and has an internal bearing supporting a hexagonal mounting rod 18. The device rotates independently; an internal hexagonal mounting rod 18 is rotatably mounted inside the mounting base 17. The internal hexagonal mounting rod 18 is rod-shaped, with an internal hexagonal hole at one end for quick insertion and connection with the hexagonal drive post 28 to transmit rotational power. The rod part is used to install a multi-stage nested sleeve 19. The internal hexagonal mounting rod 18 receives the torque transmitted by the insertion of the hexagonal drive post 28, driving the multi-stage nested sleeve 19 and the limiting rod 20 to rotate. An internal elastic element provides clamping cushioning. One end of the internal hexagonal mounting rod 18 is slidably sleeved with the multi-stage nested sleeve 19. The multi-stage nested sleeve 19 is a telescopic sleeve assembly with an internal elastic element for adaptive adjustment of the axial position of the limiting rod 20, achieving elastic retraction during clamping. The multi-stage nested sleeve 19 is slidably sleeved on... At the end of the hexagonal socket mounting rod 18, the elastic element is pre-tightened by compression during clamping, and the gap can be manually widened during unloading, and it automatically resets after release. An elastic element is provided between the inner wall of the multi-stage nested sleeve 19 and one end of the hexagonal socket mounting rod 18. A fixing plate 43 is bolted to the output end of the multi-stage nested sleeve 19. The fixing plate 43 is a transition fixing plate 43 between the front end of the multi-stage nested sleeve 19 and the mounting shell 44 of the clamping cone block 48. Its model is a non-standard connecting plate 36. A limit rod 20 is fixedly provided on one side of the outer wall of the fixing plate 43. The limit rod 20 is a cylindrical positioning element, which is specially used to insert into the box-end hole of a box-end wrench or a combination wrench, and cooperates with the limit rod 20 on the other side or the clamping cone block 48. The workpiece's degrees of freedom are restricted; its model is a non-standard pin-type part, and its head can be hardened. A mounting shell 44 is fixedly installed on the outer wall of the other side of the fixing plate 43. The mounting shell 44 is a housing structure used to accommodate the clamping cone block 48, the sliding rod 45, and the connecting spring 46. It is fixed to the back of the fixing plate 43 and its model is a non-standard cavity part. The sliding rod 45 is bolted inside the mounting shell 44. The sliding rod 45 is a guide shaft fixed inside the mounting shell 44, providing sliding guidance for the two slide plates 47. Its model is a non-standard optical shaft or equal-height screw. Two slide plates 47 are slidably sleeved on the outside of the sliding rod 45. The slide plates 47 are slidably mounted on the sliding rod 45 and serve as a moving carrier for clamping the cone block 48. Its model is a non-standard slider.Furthermore, a clamping conical block 48 is bolted to one side of the outer wall of the slide plate 47. The front end of the clamping conical block 48 is conical or wedge-shaped, specifically designed to be embedded in the opening groove of an open-end wrench or a combination wrench. Self-centering clamping is achieved by the conical surface fitting against the V-groove. It is a non-standard insert made of Cr12MoV, hardened and then ground. Connecting springs 46 are bolted to the inner walls of the two slide plates 47 and the mounting shell 44 on both sides. The sliding rod 45 passes through the connecting spring 46, and the connecting spring 46 is sleeved on the sliding rod 45. The two ends of the connecting spring 46 press against the inner walls of the mounting shell 44. The wall and slide plate 47 provide elastic force to automatically eject the clamping cone block 48 and maintain a flexible clamping on the wrench opening. The model can be a rectangular spring from MISUMI, light load type. Among them, a wrench such as a box wrench can be fixed between the two opposing limit rods 20 on the two clamping assemblies 11, a wrench such as a combination wrench can be fixed between the opposing limit rods 20 on the two clamping assemblies 11 and the clamping cone block 48, and a wrench such as an open-end wrench can be fixed between the two opposing clamping cone blocks 48 on the two clamping assemblies 11. A through hole 14 is provided on one side of the outer wall of the sliding frame 13. The through hole 14 is provided on the wall of the sliding frame 13 to provide a channel for the hexagonal drive column 28 to pass through the sliding frame 13 and insert into the internal hexagonal mounting rod 18. Its processing feature is that it is a through hole with a diameter slightly larger than the outer diameter of the hexagonal drive column 28. The through hole 14 is located on the side wall of the sliding frame 13 to allow the hexagonal drive column 28 to pass through the hexagonal hole into the internal hexagonal mounting rod 18. A mounting groove 15 is provided on one side of the outer wall of the sliding frame 13. The mounting groove 15 accommodates the drive screw 25 and provides space and guidance for the movement of the connecting frame 26. A transmission assembly 12 is also provided on one side of the clamp assembly 11. The transmission assembly 12 includes a base plate 22, a guide rail 23, and a connecting frame 26. The guide rail 23 provides linear guidance for the connecting frame 26, ensuring that the hexagonal transmission column 28 and the internal hexagonal mounting rod 18 are precisely aligned. The connecting frame 26 carries the power motor 27 and slides along the guide rail 23 to realize the axial engagement and disengagement of the hexagonal transmission column 28. The base plate 22 is fixedly installed on the outer wall of one side of the sliding frame 13. A feed motor 24 is fixedly installed on the base plate 22. The feed motor 24 can drive the transmission screw 25 to rotate, so that the forward power of the connecting frame 26 is engaged or the backward power is disengaged. The preferred model is a 42BYG48 stepper motor. The output end of the feed motor 24 is connected to the transmission screw 25. The transmission screw 25 converts the rotation of the feed motor 24 into the linear displacement of the connecting frame 26. The transmission screw 25 is located inside the mounting groove 15. The guide rail 23 is fixedly mounted on the sliding frame 13, and the connecting frame 26 is slidably mounted on the guide rail 23 and threadedly connected to the transmission screw 25. A power motor 27 is fixedly mounted on the connecting frame 26. The power motor 27 drives the internal hexagonal mounting rod 18 through the hexagonal transmission column 28, so that the wrench slowly rotates around its own axis during mechanical grinding or chemical electrolysis. The preferred model is a 60ST-M00630 servo motor. The output end of the power motor 27 is fixedly provided with a hexagonal transmission column 28. One end of the hexagonal transmission column 28 is connected to the power motor 27, and the other end is inserted into the hexagonal hole of the internal hexagonal mounting rod 18 to transmit torque. The insertion and withdrawal are controlled by the feed motor 24. One of the hexagonal transmission columns 28 will pass through the through hole 14. The feed motor 24 drives the connecting bracket 26 to move so that the hexagonal drive column 28 can be inserted into or disengaged from the internal hexagonal mounting rod 18, thereby driving the wrench, which is restricted by the limit rod 20, to rotate during polishing by the power motor 27.

[0037] This invention provides a surface polishing device for wrench manufacturing. The clamp assembly 11 uses a bidirectional lead screw 5 to drive two sliding frames 13 to move synchronously, and uses a cross rotating disk 16 to drive the wrench to revolve around a horizontal axis, realizing continuous polishing at multiple stations. This solves the problems of intermittent operation and long auxiliary time of traditional devices. At the same time, an elastic element is set between the multi-level nested sleeve 19 and the internal hexagon mounting rod 18. When unloading, the worker only needs to pull the multi-level nested sleeve 19 outward to increase the distance between the two limit rods 20, making it easy to remove the wrench. After releasing, the elastic element automatically pushes the multi-level nested sleeve 19 to reset, without the need for manual repositioning or additional tools. This significantly simplifies the unloading operation and improves the production cycle and human-machine efficiency.

[0038] In one embodiment provided by the present invention, such as Figure 2-3 As shown, the outer walls on both sides of the top of the base 4 are provided with mounting grooves 8, and the mounting grooves 8 conceal the lifting cylinder 9 to avoid debris accumulation and collision; the lifting cylinder 9 is fixedly installed at the bottom of the inner wall of the mounting groove 8. The lifting cylinder 9 extends synchronously during chemical polishing, driving the top plate 10 to pass through the through groove 41 to lift the electrolytic chemical polishing box 37, so that the wrench below is immersed in the electrolyte. Its preferred model is SC63×50-S; the top plate 10 is fixedly installed at the output end of the lifting cylinder 9.

[0039] In another embodiment provided by the present invention, such as Figure 7-8As shown, the polishing assembly 2 includes a fixed base 29. Support plates 30 are fixedly installed on both outer walls of the top of the fixed base 29. The support plates 30 support the linear motor module 38 and the cover plate 34, forming a gantry frame. A sliding groove 31 is opened on one outer wall of the top of the fixed base 29. A linear motor module 38 is fixedly installed on the top of the two support plates 30. The linear motor module 38 consists of a housing and a linear motor, and is also equipped with a water spray system. Together with the polishing block 51 installed below, it can form a water polishing device. The linear motor module 38 drives the servo motor rotating part 40 to move along a trajectory in the XY plane, scanning and polishing according to the shape of a wrench. KK60-300A1-F0 module; a lifting cylinder 39 is fixedly installed at the output end of the linear motor module 38. The lifting cylinder 39 controls the vertical lifting of the servo motor rotating part 40 to achieve tool contact with the wrench or tool retraction. Its preferred model is SC50×100-S. The output end of the lifting cylinder 39 is fixedly installed with the servo motor rotating part 40, which is installed below the lifting cylinder 39 and can rotate around the vertical axis to automatically adjust the posture of the grinding motor 50 and the grinding block 51 to adapt to the angle of different curved surfaces of the wrench. Its model can be a high-torque bus servo motor or a pneumatic rotary indexing plate. The output end of the servo motor rotating part 40 is bolted to a mounting rotating disk 49. The mounting rotating disk 49 is disc-shaped with three grinding motors 50 evenly distributed around its circumference. 0. The grinding blocks 51, which are non-standard turntable parts, can be quickly switched by rotation. Three grinding motors 50 arranged in a ring array are bolted on the outer wall of the top of the rotating disk 49. The grinding motors 50 are high-speed rotating spindles used to drive the grinding blocks 51 and provide grinding power. The models can be high-speed DC brushless electric spindles, such as the GDZ series, with a speed of 10,000-24,000 rpm, or pneumatic grinding heads. The grinding blocks 51 are fixedly installed at the output end of the grinding motors 50. The grinding blocks 51 are the grinding tools that directly contact the surface of the wrench. The grinding stones or grinding wheels with different profiles can be selected according to the shape of the wrench head and handle. The models can be nylon grinding wheels or diamond grinding heads from 3M, such as CBN grinding heads with a shank diameter of 6mm.

[0040] In another embodiment provided by the present invention, such as Figure 7As shown, the polishing assembly 2 also includes a support plate 35, which supports the electrochemical polishing box 37. The bottom of the support plate 35 is slidably connected to the polishing rod 32 via a connecting plate 36, and through slots 41 are formed on both sides. Connecting plates 36 are fixedly installed on the outer walls of both sides of the bottom of the support plate 35. The connecting plates 36 are vertically welded to the bottom of the support plate 35 and have built-in linear bearings fitted onto the polishing rod 32. The support plate 35 is slidably mounted on two polishing rods 32 via two connecting plates 36. The polishing assembly 2 also includes an electrochemical polishing box 37, which contains electrolyte and is mounted on the support plate 35. Plate 35 is moved horizontally and lifted by top plate 10, allowing the wrench below to be immersed, and power is turned on for chemical electrolytic polishing. Two electrode modules 42 are bolted to one side of the outer wall of the electrolytic chemical polishing box 37. Each electrode module 42 is anode and cathode, respectively, conducting electrolyte and workpiece, and connected to the workshop electrolytic power supply to provide an electrochemical reaction circuit for electrolytic polishing. The model can use copper electrode plates or titanium alloy electrodes, and is equipped with a DC pulse power supply. The electrode modules 42 are connected to the workshop electrolytic control equipment via wires and installed in a... The inner wall of the electrolytic chemical polishing box 37 is coated with an insulating layer. The electrolytic chemical polishing box 37 is detachably mounted on the top outer wall of the pallet 35. The electrolytic chemical polishing box 37 contains polishing electrolyte and is configured to be connected to the electrolysis power supply equipment in the workshop. Through slots 41 are provided on both sides of the top outer wall of the pallet 35, allowing the top plate 10 to pass upwards and directly lift the electrolytic chemical polishing box 37. When electrolysis is required, the lifting cylinder 9 is activated, driving the top plate 10 to push the electrolytic chemical polishing box 37. The electrochemical polishing box 37 is raised so that the wrench, which is rotated to the bottom of the cross-shaped rotary disk 16, is immersed in the electrochemical polishing box 37 for electrochemical polishing. A cover plate 34 is fixedly installed between the two support plates 30. The cover plate 34 is fixed between the support plates 30 and fits against the upper edge of the electrochemical polishing box 37 when it is at the innermost position, preventing mechanical polishing debris from falling into the electrolyte. When the servo motor rotating part 40 is polished, the electrochemical polishing box 37 and the cover plate 34 cooperate to close the box, so as to prevent polishing debris from falling into the electrochemical polishing box 37.

[0041] It should be noted that: The electrochemical polishing box 37 is a non-standard designed container used to hold a special polishing electrolyte to achieve electrochemical micro-leveling and brightening of the wrench surface. The box body can be made of polypropylene (PP) or 316L stainless steel according to process requirements. If stainless steel is used, its inner wall must be sprayed with an insulating layer such as Teflon, ceramic coating or epoxy resin to prevent the box body from becoming charged, causing stray current corrosion or short circuit, and to ensure that the electrolytic reaction only occurs between the workpiece and the cathode. Anode conductive path: In electrolytic polishing, the workpiece wrench serves as the positive anode. The anode current is drawn from the positive terminal of the workshop's DC pulse power supply and connected via a wire to an electrode module 42 mounted on the side wall of the housing. The anode terminal is then connected to a corrosion-resistant flexible wire from the anode module, which is connected to a fixed conductive slip ring or elastic carbon brush assembly. This assembly is in continuous contact with the conductive shoulder at the tail end of the hexagonal mounting rod 18 at the electrolytic station. The current is conducted from here along the hexagonal mounting rod 18, the multi-stage nested sleeve 19, the limiting rod 20, or the clamping cone block 48 to the surface of the wrench being clamped. All contact pairs in this path are made of copper alloy or silver-plated to reduce contact resistance. Because the wrench is driven to rotate by the power motor 27 during electrolysis, the slip ring structure ensures reliable conductivity during rotation. Cathode conduction path: The cathode negative electrode is composed of a cathode plate immersed in the electrolyte. The cathode plate is usually made of pure copper, titanium alloy or 316L stainless steel, and is fixed to the insulating bracket on the inner side wall of the electrolysis tank by corrosion-resistant bolts, which completely isolates it from the tank body. The cathode current path is: DC pulse power supply negative electrode → other electrode module 42, cathode terminal → corrosion-resistant wire passing through the sealed insulating gland of the tank body → cathode plate inside the tank → electrolyte. During operation, the current flows from the cathode plate into the electrolyte, and then through the liquid phase to the workpiece anode, forming a complete electrochemical reaction circuit. Insulation structure: To ensure the stability of the electrolysis process and the safety of the equipment, the entire conductive path is equipped with three levels of insulation protection: Enclosure insulation: The inner wall of the enclosure is fully covered by an insulating layer, and the cathode plate mounting bracket and fasteners are all made of polytetrafluoroethylene (PTFE) or nylon to prevent the cathode from conducting to the enclosure. Insulation of moving parts: Epoxy glass cloth laminate or nylon spacers are installed between the pallet 35 and the connecting plate 36, and between the top plate 10 and the piston rod of the lifting cylinder 9, to prevent voltage from entering the machine body after the electrolysis box is energized. Rotary conductive insulation: The fixing seat 29 of the anode conductive slip ring is installed with a POM polyoxymethylene insulating sleeve to ensure that the anode passage is only connected to the workpiece, and the slip ring shell is insulated from other metal structural parts such as the sliding frame 13.

[0042] In another embodiment provided by the present invention, such as Figure 1 As shown, an electrical control box 3 is bolted to one side of the outer wall of the polishing component 2. The electrical control box 3 receives operation commands and coordinates the action sequence of the drive motor 7, rotary motor 21, feed motor 24, power motor 27, translation cylinder 33, lifting cylinder 9, linear motor module 38 and lifting cylinder 39 in sequence according to the program. The electrical control box 3 is electrically connected to the electronic equipment on the clamping component 1 and the polishing component 2 through wires.

[0043] Working principle: Before polishing, the control box 3 is started. Then, the wrench to be polished is held between the two clamping assemblies 11. Subsequently, under the control of the control box 3, the drive motor 7 starts to rotate forward, causing the bidirectional lead screw 5 to drive the two sliding frames 13 to move towards each other. If it is a box wrench, it is fixed by the two limit rods 20 against the inner walls of the openings at both ends of the wrench. If it is a dual-purpose wrench, it is clamped by the limit rod 20 on one side and the clamping cone block 48 on the other side. During this process, the fixing plate 43 can be rotated so that the clamping cone block 48 and the limit rod 20 are on the same side. If it is an open-end wrench, it is clamped by the conical surfaces of the two opposing clamping cone blocks 48. During the clamping process, the multi-stage nested sleeve 19 will compress the elastic element inside the internal hexagon mounting rod 18. A floating buffer is used to prevent damage to the workpiece. The drive motor 7 stops when it reaches the set torque, and the wrench is reliably fixed. After loading, the rotary motor 21 starts, driving the cross-shaped rotary disc 16 to rotate the clamped wrench to the mechanical polishing station facing the polishing assembly 2. Simultaneously, the worker can continue loading and unloading the wrench on the other mounting base 17 facing upwards. During mechanical polishing, the feed motor 24 starts, driving the transmission screw 25 to rotate forward. The connecting bracket 26 advances along the guide rail 23, causing the hexagonal drive pins 28 on the two power motors 27 to move: one pin precisely inserts into the internal hexagonal mounting rod 18 at the loading station through the through hole 14, while the other pin directly inserts into the internal hexagonal mounting rod 18 at the mechanical polishing station. Then, the power motor 27 starts, and... The hexagonal drive column 28 drives the internal hexagonal mounting rod 18 to rotate, which in turn drives the clamped wrench to slowly rotate around its own horizontal axis. Then, the linear motor module 38 drives the grinding assembly to move in the XY plane according to the wrench's outline trajectory. The lifting cylinder 39 pushes the servo motor rotating part 40 to descend, and the mounting rotating disk 49 switches the corresponding grinding block 51 to contact and grind the wrench surface. With the wrench's rotation, it is ensured that the arc surface and edges are evenly ground. After mechanical polishing is completed, the feed motor 24 reverses, driving the hexagonal drive column 28 to retract and disengage from the internal hexagonal mounting rod 18. The rotary motor 21 starts again, transferring the mechanically polished wrench from the polishing station to the lowest electrochemical polishing waiting station, while simultaneously transferring the next wrench to be processed to the mechanical polishing station. Polishing station; when the wrench is rotated to the lowest station, the drive motor 7 reverses, causing the two sliding frames 13 to move back and forth slightly, releasing the wrench without completely disengaging; if chemical electrolytic polishing is required, the translation cylinder 33 is activated, pushing the support plate 35 and connecting plate 36 to slide on the polishing rod 32, so that the electrolytic chemical polishing box 37 is located directly below the lowest station of the cross rotating disk 16. Then, the lifting cylinders 9 on both sides of the base 4 extend synchronously, and the top plate 10 passes through the through groove 41 of the support plate 35, lifting the entire electrolytic chemical polishing box 37 upward, so that the electrolyte level rises until it submerges the wrench located at the lowest station. Then, the electrode module 42 is powered on and operated by the electrolytic control equipment in the workshop, thereby performing micro-leveling and brightening treatment on the surface of the wrench;During electrolysis, the feed motor 24 can reinsert the hexagonal drive post 28 into the internal hexagonal mounting rod 18 at this station. The power motor 27 drives the wrench to slowly rotate in the electrolyte to eliminate dead zones in the electrolyte flow and improve polishing uniformity. While the wrench is electrolyzing, the operator can load and unload the finished wrench at the loading position without being affected, achieving continuous and uninterrupted operation.

[0044] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A surface polishing device for wrench manufacturing, comprising a clamping assembly (1) and a polishing assembly (2), characterized in that: The clamping assembly (1) is fixedly connected to the polishing assembly (2); The clamping assembly (1) includes a base (4), a bidirectional lead screw (5) is rotatably mounted inside the base (4), a drive motor (7) is fixedly mounted on one side of the outer wall of the base (4), and the output end of the drive motor (7) is drivenly connected to one end of the bidirectional lead screw (5). Two guide rods (6) are fixedly installed inside the base (4), and two clamping assemblies (11) are slidably installed between the two guide rods (6). The two clamping assemblies (11) are threadedly connected to the bidirectional lead screw (5). The clamp assembly (11) includes a sliding frame (13) and a rotary motor (21). The sliding frame (13) is threadedly connected to the bidirectional lead screw (5), and the sliding frame (13) is slidably mounted on the two guide rods (6). A cross-shaped rotating disk (16) is rotatably mounted on one side of the sliding frame (13). The output end of the rotary motor (21) is connected to the cross-shaped rotating disk (16) via a key connection. Multiple mounting seats (17) are fixedly provided on one side of the cross-shaped rotating disk (16). An internal hexagonal mounting rod (18) is rotatably mounted inside the mounting seat (17). A multi-level nested sleeve (19) is slidably sleeved on one end of the internal hexagonal mounting rod (18). An elastic element is provided between the inner wall of the multi-level nested sleeve (19) and one end of the internal hexagonal mounting rod (18). A fixing plate (43) is bolted to the output end of the multi-level nested sleeve (19). A limit rod (20) is fixedly provided on one side of the outer wall of the fixing plate (43). A mounting shell (4) is fixedly provided on the other side of the outer wall of the fixing plate (43). 4), and a sliding rod (45) is bolted inside the mounting shell (44). Two sliding plates (47) are slidably sleeved on the outside of the sliding rod (45). A clamping cone block (48) is bolted on one side of the outer wall of the sliding plate (47). A connecting spring (46) is bolted on each side of the inner wall of the two sliding plates (47) facing the mounting shell (44). The sliding rod (45) passes through the connecting spring (46). A wrench such as a box wrench can be fixed between the two limiting rods (20) facing each other on the two clamping assemblies (11). A wrench such as a dual-purpose wrench can be fixed between the limiting rods (20) facing each other on the two clamping assemblies (11) and the clamping cone block (48). An open-end wrench or a wrench can be fixed between the two clamping cone blocks (48) facing each other on the two clamping assemblies (11). A through hole (14) is provided on one side of the outer wall of the sliding frame (13), and an installation groove (15) is provided on one side of the outer wall of the sliding frame (13). The clamp assembly (11) is also provided with a transmission assembly (12) on one side. The transmission assembly (12) includes a base plate (22), a guide rail (23) and a connecting frame (26). The base plate (22) is fixedly installed on the outer wall of one side of the sliding frame (13). A feed motor (24) is fixedly installed on the base plate (22). The output end of the feed motor (24) is connected to a transmission screw (25), and the transmission screw (25) is located inside the mounting groove (15). The guide rail (23) is fixedly installed on the sliding frame (13), the connecting frame (26) is slidably installed on the guide rail (23) and threadedly connected to the transmission screw (25), the connecting frame (26) is fixedly installed with a power motor (27), the output end of the power motor (27) is fixedly provided with a hexagonal transmission column (28), and one of the hexagonal transmission columns (28) will pass through the through hole (14). The feed motor (24) drives the connecting frame (26) to move so that the hexagonal drive column (28) inserts into or disengages from the internal hexagonal mounting rod (18), thereby driving the wrench, which is restricted by the limit rod (20), to rotate during polishing by the power motor (27).

2. The surface polishing apparatus for wrench manufacturing according to claim 1, characterized in that, The base (4) has a mounting groove (8) on both sides of the top outer wall. A lifting cylinder (9) is fixedly installed at the bottom of the inner wall of the mounting groove (8). A top plate (10) is fixedly installed at the output end of the lifting cylinder (9).

3. The surface polishing apparatus for wrench manufacturing according to claim 2, characterized in that, The polishing assembly (2) includes a fixed base (29), and a support plate (30) is fixedly installed on both sides of the top outer wall of the fixed base (29). A sliding groove (31) is opened on one side of the top outer wall of the fixed base (29).

4. The surface polishing apparatus for wrench manufacturing according to claim 3, characterized in that, Linear motor modules (38) are fixedly installed on the top of the two support plates (30). A lifting cylinder (39) is fixedly installed on the output end of the linear motor module (38). A servo motor rotating part (40) is fixedly installed on the output end of the lifting cylinder (39). A mounting rotating disk (49) is bolted on the output end of the servo motor rotating part (40). Three grinding motors (50) arranged in a ring array are bolted on the top outer wall of the mounting rotating disk (49). A grinding block (51) is fixedly installed on the output end of the grinding motor (50).

5. A surface polishing apparatus for wrench manufacturing according to claim 3, characterized in that, Two light rods (32) are fixedly installed inside the sliding groove (31), and a translation cylinder (33) is fixedly installed on the outer wall of one side of the fixed seat (29). The output end of the translation cylinder (33) is located inside the sliding groove (31).

6. A surface polishing apparatus for wrench manufacturing according to claim 5, characterized in that, The polishing assembly (2) also includes a support plate (35), and connecting plates (36) are fixedly installed on the outer walls of both sides of the bottom of the support plate (35). The support plate (35) is slidably installed on the two polishing rods (32) through the two connecting plates (36).

7. A surface polishing apparatus for wrench manufacturing according to claim 6, characterized in that, The polishing assembly (2) also includes an electrochemical polishing box (37). Two electrode modules (42) are bolted to one side of the outer wall of the electrochemical polishing box (37), and the two electrode modules (42) are divided into an anode and a cathode. The electrode modules (42) are connected to the workshop electrolysis control equipment through wires. The inner wall of the electrochemical polishing box (37) is coated with an insulating layer. The electrochemical polishing box (37) is detachably installed on the top outer wall of the tray (35). The electrochemical polishing box (37) contains polishing electrolyte, and the electrochemical polishing box (37) is configured to be connected to the workshop electrolysis power supply equipment.

8. A surface polishing apparatus for wrench manufacturing according to claim 7, characterized in that, The top two outer walls of the pallet (35) are provided with through grooves (41); when electrolysis is required, the lifting cylinder (9) is started to drive the top plate (10) to push the electrochemical polishing box (37) to rise, so that the wrench rotated to the bottom of the cross rotating disk (16) can be immersed in the electrochemical polishing box (37) for chemical electrochemical polishing.

9. A surface polishing apparatus for wrench manufacturing according to claim 8, characterized in that, A cover plate (34) is fixedly installed between the two support plates (30). When the servo motor rotating part (40) is polished, the electrochemical polishing box (37) is sealed with the cover plate (34) to prevent the polishing debris from falling into the electrochemical polishing box (37).

10. A surface polishing apparatus for wrench manufacturing according to claim 1, characterized in that, The polishing assembly (2) has an electrical control box (3) bolted on one side of its outer wall, and the electrical control box (3) is electrically connected to the electronic equipment on the clamping assembly (1) and the polishing assembly (2) respectively via wires.

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