Fixing device and drilling equipment

Abstract

The utility model belongs to the technical field of machining, and relates to a fixing device and drilling equipment. The fixing device comprises a supporting mechanism, a pressing mechanism and a rotating mechanism. The supporting mechanism comprises a supporting table. The pressing mechanism comprises an electrophoresis magnet and a pressing plate assembly. The electrophoresis magnets are installed on the supporting mechanism and located on the peripheral side of the supporting table. The pressing plate assembly is provided with a magnetic attraction piece, and the magnetic attraction piece is configured to be capable of being attracted to the electrophoresis magnet so that the pressing plate assembly can press the target object. The rotating mechanism is connected with the supporting table and is configured to drive the supporting table to rotate relative to the pressing plate assembly. According to the fixing device, the target object can be stably pressed, the requirement that the target object rotates relative to the machining equipment can be met, and the machining precision and the machining quality of the target object can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical processing, in particular to a fixing device and a drilling equipment. BACKGROUND

[0002] In the field of mechanical processing, especially in the processing of precision mechanism parts, the processing technology is complex, and the stability of the workpiece during processing is required to be high to ensure the processing precision. For example, in the processing of the annular heat dissipation hole in the sheet-shaped plate body, the sheet-shaped plate body needs to be processed all around, and the sheet-shaped plate body needs to be relatively moved with the drilling processing equipment.

[0003] Therefore, the fixing device needs to provide sufficient pressure to press the workpiece on the processing table to ensure the stability of the workpiece during processing, and also needs to meet the rotation of the workpiece relative to the processing equipment. However, the existing fixing device generally uses a pneumatic structure to fix the workpiece, which is difficult to meet the above requirements. CONTENT OF THE INVENTION

[0004] Therefore, it is necessary to provide a fixing device and a drilling equipment which can meet the requirements of pressing the workpiece and the rotation of the workpiece relative to the processing equipment.

[0005] An embodiment of the present application provides a fixing device. The fixing device is configured to fix a target object. The fixing device comprises a supporting mechanism, a pressing mechanism and a rotating mechanism. The supporting mechanism comprises a supporting table configured to carry the target object. The pressing mechanism comprises an electrophoretic magnet and a pressing plate assembly. The electrophoretic magnet is installed on the supporting mechanism and located at the side of the supporting table. The pressing plate assembly is provided with a magnetic attraction piece configured to be adsorbed with the electrophoretic magnet so that the pressing plate assembly holds the target object. The rotating mechanism is connected with the supporting table and configured to drive the supporting table to rotate relative to the pressing plate assembly.

[0006] In the fixing device, when the target object needs to be processed, the electrophoretic magnet is adsorbed with the suction cup assembly, the pressing plate assembly holds the target object, and the rotating mechanism drives the supporting table to rotate relative to the pressing plate. The technician can adjust the current of the electrophoretic magnet according to the need to adjust the pressing force of the pressing plate assembly on the target object, so as to ensure that the pressing device can stably press the target object and meet the rotation requirement of the target object relative to the processing equipment, which is beneficial to improve the processing precision and processing quality of the target object.

[0007] In at least one embodiment, the pressing plate assembly comprises a first pressing plate and a second pressing plate. The first pressing plate is provided with a magnetic attraction piece, and the second pressing plate is rotatably installed on the first pressing plate. The second pressing plate is configured to hold the target object and can rotate synchronously with the supporting table.

[0008] By the cooperation of the first pressing plate and the second pressing plate, the pressing plate assembly can ensure the target object to rotate relative to the processing equipment while pressing the target object. Specifically, the electrophoretic magnet is attracted to the magnetic attraction element in the first pressing plate, so that the second pressing plate is pressed against the target object. When the rotating mechanism drives the support table to rotate, the second pressing plate rotates synchronously with the support table.

[0009] In at least one embodiment, the pressing plate assembly further comprises a rolling member, which is arranged between the first pressing plate and the second pressing plate and is rolling connected to the first pressing plate and the second pressing plate.

[0010] By arranging the rolling member, the sliding friction between the first pressing plate and the second pressing plate can be converted into rolling friction. Compared with sliding friction, the rolling friction has smaller friction, which is conducive to reducing the risk that the target object cannot rotate relative to the processing equipment due to the jamming or sticking of the first pressing plate and the second pressing plate, so as to make the relative sliding of the first pressing plate and the second pressing plate more smooth.

[0011] In at least one embodiment, the first pressing plate is provided with a first groove, and the second pressing plate is provided with a second groove, and the first groove and the second groove jointly form a rolling space, and the rolling member is rolling installed in the rolling space.

[0012] By arranging the first groove and the second groove, it can be ensured that the rolling member always rolls in the rolling space, reducing the risk of deviation of the rolling member during rolling, causing the first pressing plate and the second pressing plate to derail and separate, and improving the safety and stability of the fixing device.

[0013] In at least one embodiment, the support mechanism further comprises a positioning member, which is installed on the support table and is configured to be capable of being inserted into a positioning hole in the target object.

[0014] By arranging the positioning member, on the one hand, it is conducive to realizing accurate positioning of the target object, improving the processing precision of the target object, and reducing the risk of increasing the processing error of the target object due to the deviation of the target object; on the other hand, it is conducive to quickly loading the target object onto the support table. The technician only needs to insert the positioning member into the positioning hole of the target object, thereby improving the processing efficiency.

[0015] In at least one embodiment, the number of positioning members is two, and the two positioning members are a positioning round pin and a positioning diamond pin.

[0016] By using the positioning round pin and the positioning diamond pin, the technician can directly install the positioning round pin and the positioning diamond pin on the support table without processing the support table, which is conducive to simplifying the structure of the fixing device and reducing the manufacturing difficulty of the fixing device.

[0017] In at least one embodiment, the pressing plate assembly further comprises a flexible member arranged on the side of the second pressing plate away from the first pressing plate.

[0018] By arranging the flexible piece, hard contact between the second pressing plate and the target object can be converted into soft contact, which is conducive to reducing the risk of damage or deformation of the target object caused by excessive pressing force of the pressing plate assembly, and improving the yield of the target object.

[0019] In at least one embodiment, the pressing plate assembly further comprises a handle for a user to hold, the handle being mounted on a side of the first pressing plate away from the target object.

[0020] By arranging the handle, the technician can replace the target object, thereby improving the processing efficiency. Specifically, when the target object on the support table needs to be replaced, the technician only needs to hold the handle to take the pressing plate assembly from the target position or place the pressing plate assembly at the target position.

[0021] In at least one embodiment, the number of magnetic attraction pieces is multiple, and the number of electrophoretic magnets is multiple, each magnetic attraction piece corresponding to an electrophoretic magnet. By arranging multiple sets of magnetic attraction pieces and electrophoretic magnets, the stability of the pressing plate assembly in pressing the target object can be further improved, and the risk of damage to the target object caused by loosening or falling of the pressing plate assembly can be reduced.

[0022] An embodiment of the present application provides a drilling device. The drilling device comprises a punching device and the fixing device according to any one of the above embodiments, and the punching device is configured to drill the target object fixed in the fixing device.

[0023] In the above drilling device, the fixing device is used. When the target object needs to be drilled, the electrophoretic magnet is attracted to the pressing plate assembly, and the pressing plate assembly is pressed on the target object. At the same time, the rotating mechanism drives the support table to rotate relative to the pressing plate, that is, drives the target object to rotate. The punching device drills the whole circumference of the target object. Among them, the technician can adjust the current of the electrophoretic magnet according to the need to adjust the pressing force of the pressing plate assembly on the target object, so as to ensure that the pressing device can stably press the target object and meet the needs of the target object rotating relative to the processing equipment, which is conducive to improving the drilling precision and processing quality of the drilling device on the target object. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic view of the fixing device when the pressing mechanism fixes the target object according to an embodiment of the present application;

[0025] Figure 2 is a structural schematic view of the fixing device when the pressing mechanism does not fix the target object according to an embodiment of the present application;

[0026] Figure 3 is Figure 1 is a sectional structural schematic view of the fixing device shown in the line III-III after cutting;

[0027] Figure 4 yes Figure 1 An exploded view of the pressure plate assembly in the structure shown.

[0028] Figure 5 yes Figure 4 The diagram shows a structural schematic of the pressure plate assembly from another angle.

[0029] Explanation of key component symbols:

[0030] 10. Fixing device; 11. Supporting mechanism; 111. Supporting platform; 112. Positioning component; 12. Pressing mechanism; 121. Electrophoretic magnet; 122. Pressure plate assembly; 1221. Magnetic suction component; 1222. First pressure plate; 12221. First groove; 1223. Second pressure plate; 12231. Second groove; 124. Rolling component; 125. Flexible component; 126. Handle; 13. Rotating mechanism; 20. Target object.

[0031] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. 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. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0034] This application provides a fixing device. The fixing device is configured to fix a target object. The fixing device includes a support mechanism, a clamping mechanism, and a rotating mechanism. The support mechanism includes a support platform configured to support the target object. The clamping mechanism includes an electrophoretic magnet and a pressure plate assembly. The electrophoretic magnet is mounted on the support mechanism and located around the periphery of the support platform. The pressure plate assembly has a magnetic attraction element configured to attract the electrophoretic magnet, thereby pressing the pressure plate assembly against the target object. The rotating mechanism is connected to the support platform and configured to drive the support platform to rotate relative to the pressure plate assembly.

[0035] In the aforementioned fixing device, when the target object needs to be processed, the electrophoretic magnet attracts the suction cup assembly, the pressure plate assembly holds the target object, and the rotating mechanism drives the support table to rotate relative to the pressure plate. Technicians can adjust the current of the electrophoretic magnet as needed to adjust the clamping force of the pressure plate assembly on the target object, thereby ensuring that the clamping device can stably clamp the target object while also meeting the requirement for the target object to rotate relative to the processing equipment. This helps improve the processing accuracy and quality of the target object.

[0036] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0037] Please refer to the following: Figures 1 to 3 One embodiment of this application provides a fixing device 10. The fixing device 10 is configured to fix a target object 20.

[0038] In some embodiments, the target object 20 can be a sheet-like plate, such as a heat sink. In other embodiments, the target object 20 can also be other products to be processed that need to be fixed and have specific rotation requirements. This application does not limit the scope of the application, and those skilled in the art can choose according to the actual situation.

[0039] In some embodiments, the fixing device 10 includes a support mechanism 11, a clamping mechanism 12, and a rotating mechanism 13. The support mechanism 11 includes a support platform 111, which is configured to support the target object 20.

[0040] In some embodiments, the support platform 111 is provided with a positioning protrusion (not shown), which is adapted to the target object 20. By providing the positioning protrusion, the target object 20 can be initially positioned to facilitate the subsequent clamping operation of the clamping mechanism 12.

[0041] For example, the target object 20 has a concave surface (not shown), and the support platform 111 has a frustum (not shown), which is adapted to the concave surface. When fixing the target object 20, the technician places the target object 20 on the support platform 111, and the frustum fits against the concave surface, thus achieving the initial positioning of the target object 20.

[0042] Please refer to the following: Figures 1 to 3 In some embodiments, the pressing mechanism 12 includes an electrophoretic magnet 121 and a pressure plate assembly 122. The electrophoretic magnet 121 is mounted on the support mechanism 11 and located on the periphery of the support platform 111. The pressure plate assembly 122 is provided with a magnetic attractant 1221, which is configured to attract the electrophoretic magnet 121, so that the pressure plate assembly 122 presses against the target object 20.

[0043] Understandably, initially, the electrophoretic magnet 121 is demagnetized. When the target object 20 needs to be processed and fixed, the technician places the target object 20 on the support platform 111 and presses the pressure plate assembly 122 onto the target object 20. At this time, the pressure plate assembly 122 holds the target object 20 under the action of gravity. Subsequently, the electrophoretic magnet 121 is adjusted to a magnetized state, generating a magnetic force that attracts it to the pressure plate assembly 122. The pressure plate assembly 122 holds the target object 20 under the action of magnetic force and gravity.

[0044] By cooperating with the pressure plate assembly 122 and the electrophoretic magnet 121, the target object 20 can be double-pressed (specifically, the pressure plate assembly 122 presses the target object 20 under the action of gravity, and the pressure plate assembly 122 and the electrophoretic magnet 121 press the target object 20 under the action of magnetic force), which is beneficial to improving the stability of the target object 20.

[0045] In some embodiments, the rotating mechanism 13 is connected to the support platform 111 and is configured to drive the support platform 111 to rotate relative to the pressure plate assembly 122. Understandably, after the pressure plate assembly 122 presses down on the target object 20, the rotating mechanism 13 drives the support platform 111 to rotate relative to the pressure plate assembly 122. At this time, the target object 20 is both pressed down and can rotate relative to the pressure plate assembly 122. External processing equipment (specifically, drilling equipment, shearing equipment, etc.) performs full-circumference processing on the target object 20.

[0046] Compared with the prior art, the fixing device 10 provided in this application, through the cooperation of the pressure plate assembly 122 and the electrophoretic magnet 121, can not only stably press the target object 20, but also meet the requirement of the target object 20 rotating relative to the processing equipment, which is beneficial to improving the processing accuracy and processing quality of the target object 20.

[0047] It is worth noting that technicians can adjust the magnetic force of the electrophoretic magnet 121 as needed, thereby adjusting the clamping force of the pressure plate assembly 122 on the target object 20. This helps to reduce the risk that the support platform 111 may not be able to rotate the target object 20 relative to the pressure plate assembly 122 due to excessive clamping force, and also helps to reduce the risk that the target object 20 may shift or detach from the support platform 111 due to insufficient clamping force.

[0048] For example, the magnetic force generated by the electrophoretic magnet 121 can be increased by increasing the current flowing through it. Alternatively, the magnetic force generated by the electrophoretic magnet 121 can be decreased by decreasing the current flowing through it.

[0049] Please refer to the following: Figure 3 and Figure 4In some embodiments, the pressure plate assembly 122 includes a first pressure plate 1222 and a second pressure plate 1223. The first pressure plate 1222 is provided with a magnetic suction element 1221, and the second pressure plate 1223 is rotatably mounted on the first pressure plate 1222. The second pressure plate 1223 is configured to hold the target object 20 and can rotate synchronously with the support table 111. Through the cooperation of the first pressure plate 1222 and the second pressure plate 1223, the pressure plate assembly 122 can ensure that the target object 20 rotates relative to the processing equipment while pressing it.

[0050] Understandably, when it is necessary to press the target object 20, the electrophoretic magnet 121 is attracted to the magnetic attractor 1221 in the first pressure plate 1222. At this time, the second pressure plate 1223 presses against the target object 20. When the rotating mechanism 13 drives the support platform 111 to rotate, the second pressure plate 1223 rotates synchronously with the support platform 111.

[0051] In other words, when the rotating mechanism 13 drives the support platform 111 to rotate, the first pressure plate 1222 is always stationary, while the second pressure plate 1223 rotates with the support platform 111. That is, the second pressure plate 1223 and the target object 20 are relatively stationary, and the second pressure plate 1223, the support platform 111 and the target object 20 rotate synchronously.

[0052] Please refer to the following: Figure 3 and Figure 4 In some embodiments, the pressure plate assembly 122 further includes a rolling element 124, which is disposed between the first pressure plate 1222 and the second pressure plate 1223 and is tactilely connected to the first pressure plate 1222 and the second pressure plate 1223.

[0053] The rolling element 124 transforms the sliding friction between the first pressure plate 1222 and the second pressure plate 1223 into rolling friction. Compared to sliding friction, rolling friction has lower frictional force, which helps reduce the risk that the target object 20 may be unable to rotate relative to the processing equipment due to jamming or jamming of the first pressure plate 1222 and the second pressure plate 1223, thus making the relative sliding of the first pressure plate 1222 and the second pressure plate 1223 smoother.

[0054] In other embodiments, the first pressure plate 1222 and the second pressure plate 1223 may use other sliding forms such as slide rails and sliders to achieve relative sliding. This application does not limit this, and those skilled in the art can choose according to the actual situation.

[0055] Please refer to the following: Figures 3 to 5 In some embodiments, the first pressure plate 1222 is provided with a first groove 12221, and the second pressure plate 1223 is provided with a second groove 12231. The first groove 12221 and the second groove 12231 together form a rolling space (not shown in the figure), and the rolling element 124 is rolled in the rolling space.

[0056] Understandably, due to the friction between the first pressure plate 1222 and the second pressure plate 1223, when the second pressure plate 1223 rotates relative to the first pressure plate 1222, the second pressure plate 1223 drives the rolling element 124 to roll within the rolling space. However, during the rolling process, the rolling element 124 tends to move along the rotation direction of the second pressure plate 1223 relative to the first pressure plate 1222.

[0057] At this time, the groove walls of the first groove 12221 and the second groove 12231 can abut against the rolling element 124 to prevent the rolling element 124 from leaving the rolling space. This helps to ensure that the rolling element 124 always rolls within the rolling space, reducing the risk of the rolling element 124 shifting during the rolling process, which could cause the first pressure plate 1222 and the second pressure plate 1223 to derail. This improves the safety and stability of the fixing device 10.

[0058] Please refer to the following: Figure 2 and Figure 3 In some embodiments, the support mechanism 11 further includes a positioning element 112, which is mounted on the support platform 111 and configured to engage with a positioning hole in the target object 20. Understandably, when it is necessary to fix the target object 20, a technician only needs to insert the positioning element 112 into the positioning hole in the target object 20 and mate the concave surface of the target object 20 with the positioning protrusion of the support platform 111.

[0059] The positioning element 112 serves two purposes: firstly, it facilitates precise positioning of the target object 20, improving its machining accuracy and reducing the risk of increased machining errors due to target object 20 offset; secondly, it allows for quick loading of the target object 20 onto the support platform 111, as technicians only need to insert the positioning element 112 into the positioning hole of the target object 20, thus improving machining efficiency.

[0060] In some embodiments, there are two positioning elements 112, namely a positioning round pin and a positioning diamond pin. By using positioning round pins and positioning diamond pins, technicians can directly install the positioning round pins and positioning diamond pins onto the support platform 111 without processing the support platform 111, which helps to simplify the structure of the fixing device 10 and reduce the manufacturing difficulty of the fixing device 10.

[0061] In other embodiments, other positioning structures may also be used, and this application does not limit them. Those skilled in the art can choose according to the actual situation.

[0062] Please refer to the following: Figures 3 to 5In some embodiments, the pressure plate assembly 122 further includes a flexible element 125 disposed on the side of the second pressure plate 1223 opposite to the first pressure plate 1222. Exemplarily, the flexible element 125 is a rubber strip. In other embodiments, the flexible element 125 may also be a component made of other flexible materials; this application does not limit this, and those skilled in the art can choose according to the actual situation.

[0063] Understandably, when the pressure plate assembly 122 is placed on the support mechanism 11 and attracted to the electrophoretic magnet 121, the rubber strip can first contact the target object 20. By providing the flexible component 125, the hard contact between the second pressure plate 1223 and the target object 20 can be transformed into a soft contact, which helps reduce the risk of damage or deformation to the target object 20 due to excessive clamping force from the pressure plate assembly 122, thereby improving the yield rate of the target object 20.

[0064] Please refer to the following: Figure 1 and Figure 2 In some embodiments, the pressure plate assembly 122 further includes a handle 126 for a user to grip, which is mounted on the side of the first pressure plate 1222 facing away from the target object 20. When it is necessary to replace the target object 20 on the support table 111, the technician only needs to grip the handle 126 to remove the pressure plate assembly 122 from the target position or place the pressure plate assembly 122 in the target position. The handle 126 facilitates the replacement of the target object 20 by the technician, improving processing efficiency.

[0065] In some embodiments, there are multiple magnetic suction elements 1221 and multiple electrophoretic magnets 121, with each magnetic suction element 1221 corresponding to one electrophoretic magnet 121. By providing multiple sets of magnetic suction elements 1221 and electrophoretic magnets 121, it is beneficial to further improve the stability of the pressure plate assembly 122 in holding the target object 20, and reduce the risk of damage to the target object 20 during processing due to loosening or falling off of the pressure plate assembly 122.

[0066] For example, there are four magnetic attractors 1221 and four electrophoretic magnets 121. The four electrophoretic magnets 121 are arranged in a rectangular pattern along the periphery of the support mechanism 11. The four magnetic attractors 1221 are mounted on the side of the first pressure plate 1222 facing the target object 20 and are arranged in a rectangular pattern.

[0067] When the pressure plate assembly 122 is placed on the support mechanism 11, one magnetic attractor 1221 corresponds to one electrophoretic magnet 121. When the electrophoretic magnet 121 is in a demagnetized state, the magnetic attractor 1221 and the electrophoretic magnet 121 are not attracted to each other. When the electrophoretic magnet 121 is in a magnetized state, the electrophoretic magnet 121 and the magnetic attractor 1221 are attracted to each other.

[0068] In other embodiments, the number of magnetic attractors 1221 and electrophoretic magnets 121 may also be 6, 7, 8 or other numbers. This application does not limit this number, and those skilled in the art can choose according to the actual situation.

[0069] One embodiment of this application provides a drilling apparatus (not shown). The drilling apparatus includes a drilling device (not shown) and a fixing device 10 as described in any of the above embodiments. The drilling device is configured to drill holes in a target object 20 fixed in the fixing device 10. Exemplarily, the drilling apparatus drills holes in a sheet-like heat sink, i.e., creates heat dissipation holes.

[0070] The aforementioned drilling equipment employs the aforementioned fixing device 10. When drilling is required on the target object 20, the electrophoretic magnet 121 attracts the pressure plate assembly 122, which presses the target object 20 against it. Simultaneously, the rotating mechanism 13 drives the support platform 111 to rotate relative to the pressure plate, thereby rotating the target object 20. The drilling device performs drilling on the entire circumference of the target object 20.

[0071] Among them, technicians can adjust the current of the electrophoretic magnet 121 as needed to adjust the clamping force of the pressure plate assembly 122 on the target object 20, thereby ensuring that the fixing device 10 can both stably clamp the target object 20 and meet the rotation requirements of the target object 20 relative to the processing equipment, which is conducive to improving the drilling accuracy and processing quality of the drilling equipment on the target object 20.

[0072] 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 fixing device configured to fix a target object, characterized in that, include: A support mechanism includes a support platform configured to support the target object; A pressing mechanism includes an electrophoretic magnet and a pressure plate assembly. The electrophoretic magnet is mounted on the support mechanism and located on the periphery of the support platform. The pressure plate assembly is provided with a magnetic attractant, which is configured to attract the electrophoretic magnet so that the pressure plate assembly presses against the target object. A rotating mechanism, connected to the support platform, is configured to drive the support platform to rotate relative to the pressure plate assembly.

2. The fixing device according to claim 1, characterized in that, The pressure plate assembly includes a first pressure plate and a second pressure plate. The first pressure plate is provided with the magnetic suction element, and the second pressure plate is rotatably mounted on the first pressure plate. The second pressure plate is configured to hold the target object and can rotate synchronously with the support platform.

3. The fixing device according to claim 2, characterized in that, The pressure plate assembly further includes a rolling element, which is disposed between the first pressure plate and the second pressure plate and is rotatably connected to the first pressure plate and the second pressure plate.

4. The fixing device according to claim 3, characterized in that, The first pressure plate has a first groove, and the second pressure plate has a second groove. The first groove and the second groove together form a rolling space, and the rolling element is rotatably installed in the rolling space.

5. The fixing device according to any one of claims 1 to 4, characterized in that, The support mechanism further includes a positioning element, which is mounted on the support platform and configured to engage with a positioning hole in the target object.

6. The fixing device according to claim 5, characterized in that, The number of positioning components is two, namely a positioning round pin and a positioning diamond pin.

7. The fixing device according to any one of claims 2 to 4, characterized in that, The pressure plate assembly further includes a flexible element disposed on the side of the second pressure plate opposite to the first pressure plate.

8. The fixing device according to any one of claims 2 to 4, characterized in that, The pressure plate assembly also includes a handle for a user to hold, the handle being mounted on the side of the first pressure plate away from the target object.

9. The fixing device according to claim 1, characterized in that, The number of magnetic attracting components is multiple, and the number of electrophoretic magnets is multiple, with each magnetic attracting component corresponding to one electrophoretic magnet.

10. A drilling device, characterized in that, It includes a drilling device and a fixing device as described in any one of claims 1 to 9, wherein the drilling device is configured to drill a hole in the target object fixed in the fixing device.

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