Polishing mechanism

Abstract

The application relates to the technical field of surface treatment, in particular to a polishing mechanism. The polishing mechanism comprises a shell, a pressing part, a connecting plate and a polishing part. The shell has a cavity, the pressing part is fixed in the cavity, the pressing part comprises a pressing main body and a driving block connected with the pressing main body, the pressing main body drives the driving block to move in a pressing direction, and the driving force of the driving block is adjusted according to an electric feedback signal to realize accurate control of the pressing force in the polishing process. The connecting plate is partially connected with the driving block, one side of the connecting plate away from the driving block is detachably connected with the polishing part, and a positioning structure is arranged between the polishing part and the connecting plate to position the relative positions of the polishing part and the connecting plate. The stability during polishing of a complex curved surface is remarkably improved by replacing a pure mechanical elastic element with a mechatronic design, the surface roughness consistency is controlled at a higher level, and the polishing mechanism is particularly suitable for scenes with strict quality consistency requirements in batch production.

Description

Technical Field

[0001] This application relates to the field of surface treatment technology, and more particularly to a polishing mechanism. Background Technology

[0002] In the field of automated surface treatment, elastic jigs, as key components connecting grinding machines and automated robotic arms, provide stable clamping force through their elastic properties, becoming an important technical means to improve polishing accuracy and efficiency. However, with the increasing demands for processing quality in industrial applications, the problems exposed by existing elastic jigs during long-term use are becoming increasingly prominent. Since grinding machines require regular maintenance and replacement, if the replacement grinding machine is not precisely matched with the elastic parameters of the elastic jig, such as stiffness coefficient and preload, the clamping force will deviate from the design value. This can easily lead to pressure fluctuations or vibrations when grinding complex curved surfaces, further exacerbating uneven surface quality and ultimately affecting the quality consistency of mass production. Utility Model Content

[0003] In view of this, this application provides a polishing mechanism that can improve polishing quality.

[0004] One embodiment of this application provides a grinding mechanism, including a housing, a clamping member, a connecting plate, and a grinding component. The housing has a cavity, and the clamping member is fixed in the cavity. The clamping member includes a clamping body and a driving block connected to the clamping body. The clamping body drives the driving block to move along the clamping direction and adjusts the driving force on the driving block according to an electrical feedback signal. The connecting plate is partially connected to the driving block, and the side of the connecting plate away from the driving block is detachably connected to the grinding component. A positioning structure is provided between the grinding component and the connecting plate for positioning the relative positions of the grinding component and the connecting plate.

[0005] The positioning structure ensures the relative positional accuracy between the grinding part and the connecting plate, improving the problem of uneven pressure distribution caused by installation deviations. Simultaneously, the clamping body can adjust the driving force of the drive block in real time based on electrical signals, maintaining a constant clamping force under different working conditions, such as after changing to different specifications of grinding parts. This effectively improves the pressure fluctuation problem caused by parameter mismatch in traditional elastic jigs. Dynamic adjustment of the driving force of the clamping part through electrical feedback signals achieves precise control of the clamping force during grinding. Furthermore, the electromechanical integration design replaces purely mechanical elastic elements, significantly improving the stability during grinding complex curved surfaces and maintaining a higher level of surface roughness consistency, making it particularly suitable for mass production scenarios with stringent quality consistency requirements.

[0006] In some embodiments, the clamping element is a voice coil motor.

[0007] Voice coil motors can achieve high-precision dynamic force control. The current can be directly adjusted through electrical signals to control the output thrust in real time. The output thrust is strictly related to the current, which keeps the clamping force of the grinding parts constant and improves the pressure fluctuation problem caused by parameter mismatch of traditional elastic elements.

[0008] In some embodiments, the inner wall of the cavity is provided with a pad, the pressing body is fixed to the pad, and a slide rail assembly is provided between the pad and the driving block. The slide rail assembly includes a first slide rail, a second slide rail and a ball. The first slide rail is fixed to the side of the pad facing the driving block, the second slide rail is fixed to the driving block, and the ball is disposed between the first slide rail and the second slide rail.

[0009] The slide rail assembly is used to support the drive block to slide precisely in a straight line. The first slide rail is fixed to the side of the pad facing the drive block, and the second slide rail is fixed to the drive block. The ball bearings are located between the first and second slide rails, which helps to reduce the friction between the first and second slide rails.

[0010] In some embodiments, the connecting plate includes a first connecting plate and a second connecting plate. The first connecting plate is fixedly connected to the drive block and partially extends out of the cavity. The second connecting plate is connected to the first connecting plate and detachably connected to the grinding component. The positioning structure is disposed between the second connecting plate and the grinding component.

[0011] The first connecting plate, acting as a power transmission intermediary, precisely guides the linear motion of the drive block out of the cavity, while ensuring efficient force transmission through a rigid connection. The second connecting plate, serving as a transition component, enables rapid replacement of the grinding parts through a detachable connection, significantly reducing production line downtime. A positioning structure is located between the second connecting plate and the grinding parts, which helps ensure the repeatability and accuracy of the grinding parts after replacement.

[0012] In some embodiments, the positioning structure includes a positioning boss and a positioning groove, which are positioned by a sidewall; one of the positioning boss and the positioning groove is located on the second connecting plate, and the other of the positioning boss and the positioning groove is located on the grinding part.

[0013] The combination of the positioning groove and the positioning boss reduces the difficulty of machining. Furthermore, the positioning boss and positioning groove serve as positioning references, allowing for quick positioning and installation of the new grinding part after replacement, while ensuring consistent installation accuracy.

[0014] In some embodiments, the side of the second connecting plate abutting against the grinding part is the contact surface, the contact surface is provided with a clearance groove, and the positioning groove is provided on the inner wall surface of the clearance groove facing the grinding part.

[0015] By setting clearance grooves, the contact area between the contact surface and the workpiece is reduced, which helps to reduce the surface machining difficulty of the contact surface and improve the flatness tolerance of the contact surface.

[0016] In some embodiments, the housing includes a top cover, a bottom cover, and a plurality of side plates, the plurality of side plates surrounding each other and having openings at both ends, the top cover and the bottom cover being disposed at corresponding openings, the connection between the top cover and the plurality of side plates being sealed, and a first connecting plate passing through the bottom cover.

[0017] The top cover, bottom cover, and multiple side panels form a sealed cavity, which serves to prevent water and dust.

[0018] In some embodiments, the housing further includes reinforcing ribs that connect the side plates and the top cover.

[0019] The reinforcing ribs connecting the side plates and the top cover improve the connection stability between the side plates and the top cover, and enhance the rigidity of the shell.

[0020] In some embodiments, the housing further includes reinforcing ribs that connect the side plates and the bottom cover.

[0021] The reinforcing ribs connecting the side plates and the bottom cover improve the connection stability between the side plates and the bottom cover, and enhance the rigidity of the shell.

[0022] In some embodiments, the housing further includes a connecting flange fixed to the side of the top cover away from the bottom cover for connecting an automated robotic arm.

[0023] The standardized interface design of the connecting flange enables rapid adaptation to different models of robotic arms, improving equipment compatibility and production line flexibility. The connecting flange connects to the top cover of the housing, forming a stable load-bearing frame that helps distribute the dynamic load during robotic arm operation.

[0024] In some embodiments, the grinding component includes a fixed base, an eccentric motor, and a grinding body. A positioning structure is disposed between the second connecting plate and the fixed base. The eccentric motor is disposed on the fixed base and has an output end. The grinding body is connected to the output end of the eccentric motor.

[0025] By driving the grinding body with an eccentric motor, the rotation speed of the grinding body can be monitored in real time, which can serve as a reference for stable grinding quality. Attached Figure Description

[0026] Figure 1 This is a perspective view of the grinding mechanism in one embodiment of this application.

[0027] Figure 2 This is a three-dimensional exploded view of the grinding mechanism in one embodiment of this application.

[0028] Figure 3 This is a three-dimensional exploded view of the grinding mechanism from another perspective in one embodiment of this application.

[0029] Figure 4This is a perspective view of the clamping member and the slide rail assembly in one embodiment of this application.

[0030] Figure 5 This is a perspective sectional view of the grinding component in one embodiment of this application.

[0031] Explanation of main component symbols 001. Grinding mechanism; 100. Housing; 110. Top cover; 120. Bottom cover; 121. Clearance opening; 130. Side plate; 140. Cavity; 150. Reinforcing rib; 160. Connecting flange; 170. Pad; 180. Slide rail assembly; 181. First slide rail; 182. Second slide rail; 200. Clamping component; 210. Clamping body; 220. Drive block; 300. Connecting plate; 310. First connecting plate; 320. Second connecting plate; 321. Positioning groove; 322. Contact surface; 323. Clearance groove; 400. Grinding component; 410. Fixing base; 411. Positioning boss; 420. Eccentric motor; 430. Grinding body. Detailed Implementation

[0032] To further illustrate the technical means and effects adopted by this application to achieve the intended purpose, the following description, in conjunction with the accompanying drawings and embodiments, is provided. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0034] In related technologies, since grinding machines need to be maintained and replaced regularly, if the replacement grinding machine is not precisely matched with the elastic parameters of the elastic fixture, such as stiffness coefficient and preload, the clamping force will deviate from the design value. When grinding complex curved surfaces, pressure fluctuations or vibrations are likely to occur, which will further aggravate uneven surface quality and ultimately affect the quality consistency of mass production.

[0035] One embodiment of this application provides a grinding mechanism, including a housing, a clamping member, a connecting plate, and a grinding component. The housing has a cavity, and the clamping member is fixed in the cavity. The clamping member includes a clamping body and a driving block connected to the clamping body. The clamping body drives the driving block to move along the clamping direction and adjusts the driving force on the driving block according to an electrical feedback signal. The connecting plate is partially connected to the driving block, and the side of the connecting plate away from the driving block is detachably connected to the grinding component. A positioning structure is provided between the grinding component and the connecting plate for positioning the relative positions of the grinding component and the connecting plate.

[0036] The positioning structure ensures the relative positional accuracy between the grinding part and the connecting plate, improving the problem of uneven pressure distribution caused by installation deviations. Simultaneously, the clamping body can adjust the driving force of the drive block in real time based on electrical signals, maintaining a constant clamping force under different working conditions, such as after changing to different specifications of grinding parts. This effectively improves the pressure fluctuation problem caused by parameter mismatch in traditional elastic jigs. Dynamic adjustment of the driving force of the clamping part through electrical feedback signals achieves precise control of the clamping force during grinding. Furthermore, the electromechanical integration design replaces purely mechanical elastic elements, significantly improving the stability during grinding complex curved surfaces and maintaining a higher level of surface roughness consistency, making it particularly suitable for mass production scenarios with stringent quality consistency requirements.

[0037] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the embodiments and features described below can be combined with each other.

[0038] Please see Figure 1 One embodiment of this application provides a grinding mechanism 001, which is used for surface treatment in the industrial field. It performs grinding, polishing, deburring, and other operations on workpieces in an automated or semi-automated manner to improve the surface finish, dimensional accuracy, and appearance quality of the product. Constant force control ensures consistent grinding quality, significantly improving production efficiency and product yield, while reducing labor costs and safety hazards.

[0039] Please see Figure 1 and Figure 2 The grinding mechanism 001 includes a housing 100, a clamping component 200, a connecting plate 300, and a grinding component 400.

[0040] The housing 100 has a cavity 140, and the clamping member 200 is fixed in the cavity 140. The clamping member 200 includes a clamping body 210 and a driving block 220 connected to the clamping body 210. The clamping body 210 drives the driving block 220 to move in the clamping direction and adjusts the driving force on the driving block 220 according to the electrical feedback signal, so that the grinding part 400 can maintain a constant clamping force under different working conditions, such as after changing to different specifications of grinding part 400. This effectively improves the pressure fluctuation problem caused by parameter mismatch in traditional elastic jigs. By dynamically adjusting the driving force of the clamping member 200 through the electrical feedback signal, precise control of the clamping force during the grinding process is achieved.

[0041] The connecting plate 300 is partially connected to the drive block 220. The side of the connecting plate 300 away from the drive block 220 is detachably connected to the grinding part 400. A positioning structure is provided between the grinding part 400 and the connecting plate 300 to position the relative position of the grinding part 400 and the connecting plate 300. The positioning structure ensures the relative position accuracy of the grinding part 400 and the connecting plate 300, and improves the problem of uneven pressure distribution caused by installation deviation.

[0042] Compared to existing technologies that use elastic fixtures to provide stable clamping force during the grinding process, the technical solution of this application replaces purely mechanical elastic elements with mechatronics design, which significantly improves the stability of grinding complex curved surfaces and controls the surface roughness consistency at a higher level. It is especially suitable for scenarios with strict quality consistency requirements in mass production.

[0043] In some embodiments, the housing 100 includes a top cover 110, a bottom cover 120, and a plurality of side plates 130. The plurality of side plates 130 surround and have openings at both ends. The top cover 110 and the bottom cover 120 are provided at the corresponding openings. The connection between the top cover 110 and the plurality of side plates 130 is sealed to form a closed cavity 140, which serves to prevent water and dust.

[0044] In this embodiment, four side plates 130 are provided, located in the front, rear, left, and right directions of the clamping member 200, respectively. The top cover 110 and the bottom cover 120 are located at the top and bottom of the four side plates 130, respectively. Waterproof adhesive is applied to the joints of the four side plates 130, the joints between the top cover 110 and the four side plates 130, and the joints between the bottom cover 120 and the four side plates 130, which helps to improve the waterproof and dustproof performance of the housing 100.

[0045] In some embodiments, the housing 100 further includes a reinforcing rib 150, which connects the side plate 130 and the top cover 110, thereby improving the connection stability between the side plate 130 and the top cover 110 and enhancing the rigidity of the housing 100.

[0046] In some embodiments, the housing 100 further includes a reinforcing rib 150, which connects the side plate 130 and the bottom cover 120, thereby improving the connection stability between the side plate 130 and the bottom cover 120 and enhancing the rigidity of the housing 100.

[0047] Please see Figure 2 and Figure 3 In some embodiments, the housing 100 further includes a connecting flange 160, which is fixed to the side of the top cover 110 away from the bottom cover 120 and is used to connect an automated robotic arm. The connecting flange 160 has a standardized circular or square interface, which can achieve rapid adaptation with different models of robotic arms, improving equipment compatibility and production line flexibility. The connecting flange 160 and the top cover 110 of the housing 100 are connected by bolts or welding, thereby forming a stable load-bearing frame, which helps to distribute the dynamic load during robotic arm operation.

[0048] In some embodiments, the clamping element 200 is a voice coil motor, which can achieve high-precision dynamic force control. The current can be directly adjusted through electrical signals to control the output thrust in real time. The output thrust is strictly related to the current, so that the clamping force of the grinding element 400 remains constant, thus improving the problem of pressure fluctuation caused by parameter mismatch in traditional elastic elements.

[0049] In other embodiments, the clamping member 200 is a linear motor, which achieves force control without mechanical transmission through direct electromagnetic drive, resulting in fast response and high precision.

[0050] Please see Figure 3 and Figure 4 In some embodiments, the inner wall of the cavity 140 is provided with a pad 170, the pressing body 210 is fixed to the pad 170, and a slide rail assembly 180 is provided between the pad 170 and the driving block 220. The slide rail assembly 180 is used to support the driving block 220 to slide precisely along a straight line.

[0051] The slide rail assembly 180 includes a first slide rail 181, a second slide rail 182, and a ball bearing (not shown). The first slide rail 181 is fixed to the side of the pad 170 facing the drive block 220, the second slide rail 182 is fixed to the drive block 220, and the ball bearing is disposed between the first slide rail 181 and the second slide rail 182, which helps to reduce the friction between the first slide rail 181 and the second slide rail 182.

[0052] In some embodiments, the connecting plate 300 includes a first connecting plate 310 and a second connecting plate 320. The first connecting plate 310 is fixedly connected to the driving block 220. The bottom cover 120 is provided with a clearance opening 121. A portion of the first connecting plate 310 extends out of the cavity 140 from the clearance opening 121 of the bottom cover 120. The second connecting plate 320 connects the first connecting plate 310 and the grinding component 400. A positioning structure is provided between the second connecting plate 320 and the grinding component 400.

[0053] The first connecting plate 310 acts as a power transmission intermediary, precisely guiding the linear motion of the drive block 220 into the cavity 140, while ensuring efficient force transmission through a rigid connection. The second connecting plate 320 is detachably connected to the grinding part 400. As a transition component, the second connecting plate 320 enables rapid replacement of the grinding part 400 through its detachable connection, significantly reducing production line downtime. A positioning structure is located between the second connecting plate 320 and the grinding part 400, which helps ensure the repeatability and accuracy of the positioning of the grinding part 400 after replacement.

[0054] Please see Figure 2 and Figure 3In some embodiments, the positioning structure includes a positioning boss 411 and a positioning groove 321, which are positioned by a sidewall. One of the positioning boss 411 and the positioning groove 321 is located on the second connecting plate 320, and the other of the positioning boss 411 and the positioning groove 321 is located on the grinding member 400.

[0055] The cooperation between the positioning groove 321 and the positioning boss 411 reduces the difficulty of processing. On the other hand, the positioning boss 411 and the positioning groove 321 serve as positioning references. After replacing the new grinding part 400, the grinding part 400 can be quickly positioned and installed by the cooperation between the positioning groove 321 and the positioning boss 411, ensuring the consistency of installation accuracy.

[0056] In this embodiment, the positioning boss 411 is provided on the grinding part 400, and the positioning groove 321 is provided on the second connecting plate 320.

[0057] Optionally, the positioning groove 321 is provided on the grinding part 400, and the positioning boss 411 is provided on the second connecting plate 320.

[0058] In some embodiments, the positioning boss 411 is generally a cuboid.

[0059] In some embodiments, the second connecting plate 320 abuts against the side of the grinding part 400 as a contact surface 322. The contact surface 322 is provided with a clearance groove 323, and a positioning groove 321 is provided on the inner wall surface of the clearance groove 323 facing the grinding part 400. By providing the clearance groove 323, the contact area between the contact surface 322 and the grinding part 400 is reduced, which helps to reduce the surface processing difficulty of the contact surface 322 and improve the planar tolerance of the contact surface 322.

[0060] Please see Figure 3 and Figure 5 In some embodiments, the grinding component 400 includes a fixed base 410, an eccentric motor 420, and a grinding body 430, with a positioning structure disposed between the second connecting plate 320 and the fixed base 410. Specifically, a positioning boss 411 is disposed on the side of the fixed base 410 facing the second connecting plate 320.

[0061] An eccentric motor 420 is mounted on a fixed base 410 and has an output end. The grinding body 430 is connected to the output end of the eccentric motor 420. The eccentric motor 420 can monitor the rotation speed of the grinding body 430 in real time and can serve as a reference for stable grinding quality.

[0062] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A polishing mechanism, characterized in that, The device includes a housing, a clamping component, a connecting plate, and a grinding component. The housing has a cavity, and the clamping component is fixed to the cavity. The clamping component includes a clamping body and a driving block connected to the clamping body. The clamping body drives the driving block to move along the clamping direction and adjusts the driving force on the driving block according to an electrical feedback signal. The connecting plate is partially connected to the driving block, and the side of the connecting plate away from the driving block is detachably connected to the grinding component. A positioning structure is provided between the grinding component and the connecting plate for positioning the relative positions of the grinding component and the connecting plate.

2. The polishing mechanism as described in claim 1, characterized in that, The clamping component is a voice coil motor.

3. The polishing mechanism as described in claim 1, characterized in that, The inner wall of the cavity is provided with a pad, the pressing body is fixed to the pad, and a slide rail assembly is provided between the pad and the driving block. The slide rail assembly includes a first slide rail, a second slide rail and a ball bearing. The first slide rail is fixed to the side of the pad facing the driving block, the second slide rail is fixed to the driving block, and the ball bearing is disposed between the first slide rail and the second slide rail.

4. The polishing mechanism as described in claim 1, characterized in that, The connecting plate includes a first connecting plate and a second connecting plate. The first connecting plate is fixedly connected to the driving block and partially extends out of the cavity. The second connecting plate is connected to the first connecting plate and detachably connected to the grinding component. The positioning structure is located between the second connecting plate and the grinding component.

5. The polishing mechanism as described in claim 4, characterized in that, The positioning structure includes a positioning boss and a positioning groove. The positioning boss and the positioning groove are positioned by engaging with the sidewalls. One of the positioning boss and the positioning groove is located on the second connecting plate, and the other of the positioning boss and the positioning groove is located on the grinding part.

6. The polishing mechanism as described in claim 5, characterized in that, The second connecting plate abuts against the side of the grinding part as a contact surface, and the contact surface is provided with a clearance groove. The positioning groove is located on the inner wall surface of the clearance groove facing the grinding part.

7. The polishing mechanism as described in claim 4, characterized in that, The housing includes a top cover, a bottom cover, and multiple side plates. The multiple side plates surround each other and have openings at both ends. The top cover and the bottom cover are disposed at the corresponding openings. The connection between the top cover and the multiple side plates is sealed. The first connecting plate passes through the bottom cover.

8. The polishing mechanism as described in claim 7, characterized in that, The housing also includes reinforcing ribs that connect the side plates and the top cover, and / or the reinforcing ribs that connect the side plates and the bottom cover.

9. The polishing mechanism as described in claim 7, characterized in that, The housing also includes a connecting flange, which is fixed to the top cover on the side away from the bottom cover and is used to connect an automated robotic arm.

10. The polishing mechanism as described in claim 4, characterized in that, The grinding component includes a fixed base, an eccentric motor, and a grinding body. The positioning structure is located between the second connecting plate and the fixed base. The eccentric motor is located on the fixed base and has an output end. The grinding body is connected to the output end of the eccentric motor.

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