Hand plate model grinding equipment

Abstract

The utility model belongs to the technical field of hand plate model production, and particularly relates to hand plate model polishing equipment. Comprising a rack on which a shell is arranged; a supporting plate is arranged on the first motor; the workbench is arranged on the supporting plate and used for supporting the hand plate model; the polishing mechanism is used for polishing the hand plate model; the polishing mechanism comprises a fixing plate frame located in the machine shell; the transmission shafts are rotationally arranged on the left and right sides of the fixed plate frame; the driving wheel is arranged on the transmission shaft; the guide plate is arranged on the fixed plate frame in a bolt connection manner; the rotating shaft is rotationally arranged at the upper end of the guide plate; the driven wheel is arranged on the rotating shaft; the grinding belt is arranged between the driving wheel and the driven wheel in a sleeving manner; the motor II is arranged on the fixed plate frame; the synchronizing wheel is arranged on the output shaft of the motor II and the transmission shaft; and the synchronous belt is sleeved between the synchronous wheels. The utility model provides hand plate model polishing equipment which can adapt to special-shaped hand plate models and improve the polishing precision.

Description

Technical Field

[0001] The utility model belongs to the technical field of hand model production, in particular to a hand model polishing device. Background Art

[0002] A prototype is one or more functional prototypes made based on a product's appearance or structural drawings before a mold is created. These prototypes are used to verify the appearance or structural integrity of the product. Prototypes are also known as first prototypes in various contexts. After the prototype is completed, it undergoes fine polishing and surface treatment to ensure the final product's appearance and functionality meet design requirements.

[0003] Traditional grinding equipment cannot guarantee sufficient precision during the grinding process. Due to the uneven shapes of prototypes, current grinding wheels cannot adapt to the irregular shapes of prototypes, which can easily cause scratches and other problems on the surface of the prototype. This has a significant impact on prototypes that require high precision, especially those used for design verification and functional testing. Utility Model Content

[0004] The purpose of the utility model is to provide a hand model grinding device that can adapt to the anisotropic hand models and improve the grinding accuracy in response to the above-mentioned technical problems.

[0005] In view of this, the utility model provides a prototype model polishing device, comprising:

[0006] a frame on which a casing is provided;

[0007] The opening and closing doors are hinged at the left and right ends of the front side of the casing;

[0008] A support base is provided on the top of the frame and is located inside the casing;

[0009] Motor 1 is arranged at the bottom of the support base, and the output shaft of motor 1 passes through the support base;

[0010] A support plate is provided on an output shaft of the motor;

[0011] A workbench, provided on the support plate, for supporting the prototype model;

[0012] The grinding mechanism is arranged inside the housing and is used to grind the hand plate model;

[0013] The grinding mechanism includes:

[0014] A fixed plate frame, located inside the housing;

[0015] The transmission shaft is rotatably arranged on the left and right sides of the fixed plate frame;

[0016] A driving wheel is provided on the transmission shaft;

[0017] The guide plate is arranged on the fixed plate frame by means of bolt connection;

[0018] A rotating shaft is rotatably arranged on the upper end of the guide plate;

[0019] A driven wheel is provided on the rotating shaft;

[0020] A grinding belt is sleeved between the driving wheel and the driven wheel;

[0021] Motor 2 is arranged on a fixed plate frame;

[0022] The synchronous wheel is arranged on the second output shaft of the motor and the transmission shaft;

[0023] The synchronous belt is installed between the synchronous wheels.

[0024] In the above technical solution, the grinding mechanism further includes a moving component for adjusting the height of the grinding belt according to the height of the prototype model, and the moving component includes:

[0025] a bracket, located inside the housing;

[0026] A mounting plate is provided on the bracket;

[0027] A screw, rotatably arranged on the mounting plate;

[0028] The slider is threadedly arranged on the screw rod, and the slider is connected to the fixed plate frame;

[0029] A runner is provided at the upper end of the screw;

[0030] A slide plate is slidably arranged on the guide plate;

[0031] The fixed block is arranged on the slide plate by means of bolt connection, and the fixed block is connected to the rotating shaft.

[0032] In any of the above technical solutions, further, an adjustment mechanism for adjusting the grinding belt to be close to or away from the prototype model is provided inside the housing, and the adjustment mechanism includes:

[0033] Motor three is arranged at both ends of the inner wall of the casing;

[0034] The ball screw is set on the third output shaft of the motor;

[0035] The connecting plates are arranged on both sides of the bottom of the bracket, and the connecting plates are threadedly connected to the ball screw.

[0036] In any of the above technical solutions, further, a clamping mechanism for clamping the hand model is provided on the support plate, and the clamping mechanism includes:

[0037] Ear plates are arranged around the supporting plate;

[0038] A guide rod is provided between the two ear plates on the same side;

[0039] A movable plate is slidably arranged on the guide rod;

[0040] a rack, arranged on the movable plate;

[0041] Motor 4 is arranged on the support plate;

[0042] The gear is arranged on the fourth output shaft of the motor, and the gear meshes with the rack;

[0043] a support column, disposed on the top edge of the rack;

[0044] The clamps are arranged on the support column, and the two clamps are distributed relative to each other.

[0045] In any of the above technical solutions, further, the clamp is provided with a clamping component, and the clamping component is made of elastic material.

[0046] In any of the above technical solutions, further, universal wheels are provided at the bottom of the frame.

[0047] In any of the above technical solutions, further, an observation panel is provided on the opening and closing door.

[0048] The beneficial effects of the utility model are:

[0049] 1. The second motor drives the synchronous wheel and the synchronous belt, which transmits power to the driving wheel and the driven wheel, forming the movement of the grinding belt. The grinding belt rubs and grinds on the surface of the prototype. When facing the special-shaped prototype, the grinding belt can deform to adapt to the appearance of the prototype, thereby grinding the special-shaped prototype and improving the appearance quality of the prototype.

[0050] 2. The operator rotates the wheel, which drives the screw to rotate, and the slider moves along its thread. The height of the grinding belt can be raised or lowered by adjusting the position of the slider. The adjustment slide moves on the guide plate, driving the fixed block to move upward, thereby driving the movement of the driven wheel to effectively adjust the tightness of the grinding belt. By adjusting the height and tightness of the grinding belt, the grinding requirements of different models can be met, improving work efficiency and safety.

[0051] 3. The movement of the connecting plate directly affects the position of the grinding belt by driving the ball screw driven by the third motor, making it move closer to or further away from the prototype. This enables precise adjustment between the grinding belt and the prototype, improves flexibility and accuracy during the grinding process, and ensures the best grinding effect.

[0052] 4. The gear on the output shaft of the motor is driven to rotate, and the gear is engaged with the rack, so that the rack drives the support column to move, and the fixture begins to move inward towards the prototype model and clamp it to ensure that the prototype model is firmly clamped to prevent the model from moving during the polishing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0054] Figure 2 This is a schematic diagram of the three-dimensional structure of the first part of the utility model;

[0055] Figure 3 This is a schematic diagram of the three-dimensional structure of the second part of the utility model;

[0056] Figure 4 It is a three-dimensional structural diagram of the grinding mechanism of the utility model;

[0057] The accompanying drawings are marked as follows: 1. frame; 2. housing; 3. opening and closing door; 4. support base; 5. motor 1; 6. support plate; 7. workbench; 8. grinding mechanism; 81. fixed plate frame; 82. transmission shaft; 83. driving wheel; 84. guide plate; 85. rotating shaft; 86. driven wheel; 87. grinding belt; 88. motor 2; 89. synchronous wheel; 810. synchronous belt; 9. moving assembly; 91. bracket; 92. mounting plate; 93. screw Rod; 94, slider; 95, rotating wheel; 96, skateboard; 97, fixed block; 10, adjustment mechanism; 101, motor three; 102, ball screw; 103, connecting plate; 11, clamping mechanism; 111, ear plate; 112, guide rod; 113, moving plate; 114, rack; 115, motor four; 116, gear; 117, support column; 118, fixture; 12, clamping part; 13, universal wheel; 14, observation plate. DETAILED DESCRIPTION

[0058] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0059] In the description of this application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, technologies, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0060] Example 1:

[0061] like Figure 2-Figure 4 As shown, this embodiment provides a prototype model polishing device, including:

[0062] A frame 1, on which a housing 2 is provided;

[0063] The opening and closing door 3 is hingedly arranged at the left and right ends of the front side of the housing 2;

[0064] The support base 4 is provided on the top of the frame 1 and is located inside the housing 2;

[0065] Motor 1 5 is disposed at the bottom of the support base 4, and the output shaft of motor 1 5 passes through the support base 4;

[0066] Support plate 6, arranged on the output shaft of motor 1 5;

[0067] A workbench 7 is provided on the support plate 6 and is used to support the prototype model;

[0068] A grinding mechanism 8 is provided inside the housing 2 and is used for grinding the hand plate model;

[0069] The grinding mechanism 8 comprises:

[0070] The fixed plate frame 81 is located inside the housing 2;

[0071] The transmission shaft 82 is rotatably arranged on the left and right sides of the fixed plate frame 81;

[0072] The driving wheel 83 is provided on the transmission shaft 82;

[0073] The guide plate 84 is provided on the fixed plate frame 81 by means of bolt connection;

[0074] The rotating shaft 85 is rotatably arranged on the upper end of the guide plate 84;

[0075] The driven wheel 86 is provided on the rotating shaft 85;

[0076] The grinding belt 87 is sleeved between the driving wheel 83 and the driven wheel 86;

[0077] Motor 2 88, mounted on the fixed plate frame 81;

[0078] Synchronous wheel 89, provided on the output shaft of motor 2 88 and transmission shaft 82;

[0079] The synchronous belt 810 is sleeved between the synchronous wheels 89 .

[0080] In this technical solution, the operation of the polishing mechanism 8 can evenly polish the surface of the hand model, removing burrs and unevenness, improving the model's appearance quality, reducing manual intervention, and increasing polishing efficiency. The integrated motor and transmission system ensures stability and consistency during the polishing process. The opening and closing door 3 and the housing 2 are provided to ensure operator safety during use.

[0081] Workflow: By opening and closing the door 3, the operator can place the hand model on the workbench 7 to ensure that the model is firmly supported, and then start the motor 2 88. The motor 2 88 drives the synchronous wheel 89 and the synchronous belt 810 to transmit power to the transmission shaft 82. The rotation of the transmission shaft 82 drives the driving wheel 83 and the driven wheel 86 to form the movement of the grinding belt 87. The grinding belt 87 is set between the driving wheel 83 and the driven wheel 86. As the wheels rotate, the grinding belt 87 rubs and grinds on the surface of the hand model. When it is necessary to grind the special-shaped hand model, the grinding belt 87 can be deformed to adapt to the appearance of the hand model, thereby grinding the special-shaped hand model. The operator can adjust the tightness, speed and grinding time of the grinding belt 87 as needed to achieve different grinding effects, and then start the motor 1 5. The output shaft of the motor 1 5 drives the support plate 6 and the workbench 7, and the workbench 7 drives the hand model to rotate, so that the hand model as a whole is evenly in contact with the grinding belt 87, thereby evenly grinding the hand model. After the grinding is completed, turn off the motor 1 5 and the motor 2 88. The operator can take out the polished hand model by opening and closing the door 3 and check its surface quality. In this way, an efficient and automated grinding process is realized, which not only improves the appearance quality of the hand model, but also improves the safety and convenience of operation, and can also grind special-shaped hand models.

[0082] like Figure 2-Figure 4 As shown, in this embodiment, the grinding mechanism 8 is optimized and further includes a moving component 9 for adjusting the height of the grinding belt 87 according to the height of the hand-plate model. The moving component 9 includes:

[0083] The bracket 91 is located inside the housing 2;

[0084] A mounting plate 92 is provided on the bracket 91;

[0085] The screw 93 is rotatably mounted on the mounting plate 92;

[0086] The slider 94 is threadedly mounted on the screw 93 and is connected to the fixed plate frame 81;

[0087] The rotating wheel 95 is provided at the upper end of the screw 93;

[0088] A slide plate 96 is slidably disposed on the guide plate 84;

[0089] The fixing block 97 is provided on the slide plate 96 by means of bolt connection, and the fixing block 97 is connected to the rotating shaft 85 .

[0090] In this technical solution, the operator determines the required height range based on the height of the prototype to be polished. The operator rotates wheel 95, which drives screw 93 on mounting plate 92. The rotation of screw 93 moves slider 94 along its threaded path. Slider 94 is connected to fixed plate frame 81. Adjusting the position of slider 94 adjusts the height of polishing belt 87. Ensure the polishing belt 87 is accurately set by observing a height scale or reference line. After completing the height adjustment, the operator checks whether the grinding belt 87 has reached the appropriate tightness. If it has not reached the appropriate tightness, the operator adjusts the slide 96, and the slide 96 moves on the guide plate 84. The slide 96 drives the fixed block 97 to move upward, and the fixed block 97 drives the rotating shaft 85 to move upward, and the rotating shaft 85 drives the driven wheel 86 to move upward. The movement of the driven wheel 86 effectively adjusts the tightness of the grinding belt 87. After adjusting the grinding belt 87 to the appropriate tightness, start the motor 2 88, and the motor 2 88 drives the synchronous wheel 89 to rotate. Under the action of the synchronous wheel 89 and the synchronous belt 810, power is transmitted to the transmission shaft 82. The rotation of the transmission shaft 82 drives the driving wheel 83 and the driven wheel 86, forming the movement of the grinding belt 87, and the grinding belt 87 is rubbed and polished on the surface of the hand model. When the grinding belt 87 needs to be disassembled, the grinding belt 87 connected to the rotating shaft 85 is released by loosening the fixing block 97, so that it can be taken out from between the driving wheel 83 and the driven wheel 86. After removing the old grinding belt 87, the operator puts the new grinding belt 87 between the driving wheel 83 and the driven wheel 86. The fixing block 97 is then connected to the slide 96 and tightened with bolts to ensure that the grinding belt 87 is stable. After confirming that the replacement and adjustment are correct, the operator can start the equipment for grinding and adjust the motor speed to adapt to the new grinding belt 87 to ensure the best grinding effect. The wear of the grinding belt 87 is monitored and replaced in time to ensure the long-term operation of the equipment. This greatly improves the flexibility and convenience of the prototype model grinding equipment. By adjusting the height and the tightness of the grinding belt 87, the grinding needs of different models are met, while optimizing the operating process and improving work efficiency and safety.

[0091] like Figure 2-Figure 4 As shown, in this embodiment, the housing 2 is optimized to be provided with an adjustment mechanism 10 for adjusting the grinding belt 87 to be close to or away from the prototype model. The adjustment mechanism 10 includes:

[0092] Motor 3 101, arranged at both ends of the inner wall of the casing 2;

[0093] The ball screw 102 is provided on the output shaft of the motor 3 101;

[0094] The connecting plates 103 are disposed on both sides of the bottom of the bracket 91 , and the connecting plates 103 are threadedly connected to the ball screw 102 .

[0095] In this technical solution, when the relative position of the grinding belt 87 and the hand model needs to be adjusted, the motor 3 101 is first started. The motor 3 101 is responsible for driving the rotation of the ball screw 102. The connecting plate 103 moves along the axial direction of the ball screw 102. The movement of the connecting plate 103 will directly affect the position of the grinding belt 87, making it closer to or farther away from the hand model. The operator observes the distance between the grinding belt 87 and the hand model to determine whether the grinding effect and distance meet the requirements. During the adjustment process, the change in distance can be confirmed by a ruler or position indicator, and fine-tuned until the ideal state is reached. After adjusting to the appropriate position, the operator confirms that it is correct and can start the equipment to perform actual grinding work. During the grinding process, the operator can adjust the position of the grinding belt 87 in a timely manner according to the actual situation to ensure a continuous grinding effect. This achieves precise adjustment between the grinding belt 87 and the hand model, which not only improves the flexibility and accuracy of the grinding process, but also effectively reduces manual intervention, optimizes operational efficiency, and ensures that the grinding effect reaches the best state.

[0096] Example 2:

[0097] This embodiment provides a prototype model polishing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0098] like Figure 3 As shown, in this embodiment, the support plate 6 is optimized to be provided with a clamping mechanism 11 for clamping the hand model, and the clamping mechanism 11 includes:

[0099] Ear plates 111 are arranged around the support plate 6;

[0100] A guide rod 112 is provided between the two ear plates 111 on the same side;

[0101] The movable plate 113 is slidably disposed on the guide rod 112;

[0102] The rack 114 is provided on the movable plate 113;

[0103] Motor 4 115, disposed on the support plate 6;

[0104] Gear 116 is provided on the output shaft of motor 4 115 and meshes with rack 114;

[0105] A support column 117 is provided on the top edge of the rack 114;

[0106] The clamps 118 are disposed on the support column 117 , and the two clamps 118 are disposed opposite to each other.

[0107] In this technical solution, the operator places the hand model to be polished on the workbench 7, ensures that the model is in a reasonable position, and then starts the motor 4 115. The motor 4 115 drives the gear 116 on the output shaft to rotate, and the gear 116 is engaged with the rack 114, so that the rack 114 drives the movable plate 113 to slide along the guide rod 112. The guide rod 112 provides a guide for the movement of the rack 114. As the rack 114 slides, the support column 117 moves, and the clamp 118 begins to approach the hand model inward for clamping. The operator observes The clamping effect ensures that the hand model is firmly clamped to prevent the model from moving during the grinding process. After the clamping is completed, the equipment can start the grinding mechanism 8 and start grinding the hand model. After the grinding is completed, the operator starts the motor 4 115 again, rotates the gear 116 in the opposite direction, and slides the movable plate 113 to loosen the clamp 118, thereby safely removing the hand model. In this way, the hand model is firmly clamped and quickly loosened, which improves the stability and safety of the grinding process and ensures that the operator does not need to worry about the displacement of the model during the grinding process.

[0108] like Figure 1-Figure 4 As shown, in this embodiment, it is optimized that the clamp 118 is provided with a clamping component 12, and the clamping component 12 is made of elastic material.

[0109] In this technical solution, the clamping component 12 is made of an elastic material, which provides a better clamping effect and the function of protecting the hand model. The elastic material can effectively increase the friction of the clamping, ensuring the stability of the hand model during the polishing process. The elastic material can adapt to the irregularities of the model surface when clamping, reduce the pressure on the model surface, and avoid scratches or indentations. The flexibility of the elastic material enables the clamping component 12 to adapt to hand models of different shapes and materials, expanding the application range of the equipment. During the long-term clamping process, the elastic material can effectively buffer the transmission of force, reduce the continuous pressure of the clamp 118 on the hand model, and reduce fatigue.

[0110] Workflow: When the clamping component 12 contacts the prototype model, the properties of the elastic material allow it to deform moderately, forming good contact and clamping force. As the clamping process proceeds, the elasticity of the clamping component 12 enables it to evenly distribute the clamping force, ensuring that both sides of the model are subjected to consistent force, thereby enhancing stability. The design of the clamping component 12 not only improves the clamping effect of the fixture 118, but also effectively protects the surface of the prototype model and reduces potential damage risks.

[0111] Example 3:

[0112] This embodiment provides a prototype model polishing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0113] like Figure 1 As shown, in this embodiment, it is optimized that a universal wheel 13 is provided at the bottom of the frame 1 .

[0114] In this technical solution, if the equipment needs to be adjusted, the operator can easily push the equipment and quickly move it to a new position using the flexibility of the universal wheels 13. After grinding is completed, the operator can push the equipment to a storage location to facilitate subsequent cleaning and maintenance. This provides significant flexibility and maneuverability, making the equipment more convenient to use in different working environments. The universal wheels 13 not only improve the equipment's operability, but also facilitate the user's position adjustment during the grinding process while ensuring stability, meeting the requirements of modern production for equipment flexibility.

[0115] Example 4:

[0116] This embodiment provides a prototype model polishing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0117] like Figure 1 As shown, in this embodiment, an observation panel 14 is provided on the opening and closing door 3 in an optimized manner.

[0118] In this technical solution, the observation panel 14 allows the operator to observe the internal working status during the polishing process without having to frequently open the door, thereby improving work efficiency. Through the observation panel 14, the operator can confirm the operating status of the equipment and the condition of the prototype model at any time, reducing the risk of accidents. During the polishing process, the observation panel 14 can effectively reduce the impact of dust and noise on the external environment and protect the health of the operator. The observation panel 14 provides a transparent window so that the operator can clearly see the details of the polishing process, making it easier to make necessary adjustments. During the polishing process, the operator observes the polishing status of the prototype model and the operation of the equipment through the observation panel 14, and promptly detects any abnormalities. If uneven polishing or other problems are found during the observation process, the operator can quickly make adjustments without having to open the opening and closing door 3, saving time. During the observation process, the operator always keeps the door closed to prevent accidental contact with internal components of the equipment and ensure safe operation.

[0119] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A prototype model polishing device, characterized in that: include: A frame (1) having a housing (2) disposed thereon; An opening and closing door (3) is hingedly arranged at the left and right ends of the front side of the housing (2); A support base (4) is arranged on the top of the frame (1) and is located inside the housing (2); Motor 1 (5) is arranged at the bottom of the support base (4), and the output shaft of motor 1 (5) passes through the support base (4); A support plate (6) is provided on the output shaft of the motor 1 (5); A workbench (7) is provided on the support plate (6) and is used to support the prototype model; A grinding mechanism (8) is provided inside the housing (2) and is used for grinding the hand plate model; The grinding mechanism (8) comprises: A fixed plate frame (81) located inside the housing (2); A transmission shaft (82) is rotatably arranged on the left and right sides of the fixed plate frame (81); A driving wheel (83) is provided on the transmission shaft (82); A guide plate (84) is provided on the fixed plate frame (81) by means of a bolt connection; A rotating shaft (85) is rotatably arranged on the upper end of the guide plate (84); A driven wheel (86) is provided on the rotating shaft (85); A grinding belt (87) is sleeved between the driving wheel (83) and the driven wheel (86); Motor 2 (88), disposed on the fixed plate frame (81); A synchronous wheel (89) is provided on the output shaft of the second motor (88) and the transmission shaft (82); The synchronous belt (810) is sleeved between the synchronous wheels (89).

2. A hand model polishing device according to claim 1, characterized in that: The polishing mechanism (8) further includes a moving component (9) for adjusting the height of the polishing belt (87) according to the height of the hand-plate model, and the moving component (9) includes: A bracket (91) is located inside the housing (2); A mounting plate (92) is disposed on the bracket (91); A screw (93) is rotatably mounted on the mounting plate (92); A slider (94) is threadedly mounted on the screw rod (93), and the slider (94) is connected to the fixed plate frame (81); A rotating wheel (95) is provided at the upper end of the screw (93); A slide plate (96) slidably disposed on the guide plate (84); The fixing block (97) is arranged on the slide plate (96) by means of a bolt connection, and the fixing block (97) is connected to the rotating shaft (85).

3. A hand model polishing device according to claim 2, characterized in that: An adjusting mechanism (10) for adjusting the grinding belt (87) to move closer to or farther from the prototype is provided inside the housing (2). The adjusting mechanism (10) comprises: Motor three (101), arranged at both ends of the inner wall of the housing (2); A ball screw (102) is provided on the output shaft of the motor three (101); The connecting plates (103) are arranged on both sides of the bottom of the bracket (91), and the connecting plates (103) are threadedly connected to the ball screw (102).

4. A hand model polishing device according to claim 1, characterized in that: The support plate (6) is provided with a clamping mechanism (11) for clamping the hand model, and the clamping mechanism (11) comprises: Ear plates (111) are arranged around the support plate (6); A guide rod (112) is provided between the two ear plates (111) on the same side; A movable plate (113) is slidably disposed on the guide rod (112); A rack (114) is provided on the movable plate (113); Motor four (115), disposed on the support plate (6); A gear (116) is provided on the output shaft of the motor (115), and the gear (116) is meshed with the rack (114); A support column (117) is provided on the top edge of the rack (114); The clamps (118) are arranged on the support column (117), and the two clamps (118) are arranged relative to each other.

5. A hand model polishing device according to claim 4, characterized in that: The clamp (118) is provided with a clamping component (12), and the clamping component (12) is made of an elastic material.

6. A hand model polishing device according to claim 1, characterized in that: Universal wheels (13) are provided at the bottom of the frame (1).

7. A hand model polishing device according to claim 1, characterized in that: An observation panel (14) is provided on the opening and closing door (3).

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