Handle polishing positioning tool
By designing a grinding positioning fixture that includes a base, support plate, inner shaft and clamping positioning mechanism, the problem of inconvenient operation of traditional fixtures is solved, and the handle can be conveniently fixed and rotated, thus improving grinding efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN XINDASHENG MOLDING CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-06-05
AI Technical Summary
The existing handle grinding and positioning fixtures are relatively traditional in design, requiring operators to constantly adjust their position and angle, which makes operation inconvenient.
A grinding positioning fixture including a base, a support plate, an inner shaft, a clamping and positioning mechanism, and a power mechanism was designed. The handle is fixed by a threaded rod, and the power mechanism drives the inner shaft to rotate, so as to achieve convenient fixing and rotation of the handle.
It improves the convenience of the sanding operation, simplifies the process of fixing and rotating the handle, and enhances sanding efficiency.
Smart Images

Figure CN224322938U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of handle polishing technology, specifically a handle polishing positioning fixture. Background Technology
[0002] In many industries involving handle manufacturing, such as furniture manufacturing, hardware production, and automotive parts processing, handles are key components. Their surface quality, dimensional accuracy, and aesthetic appearance directly affect the overall quality and market competitiveness of the product. The polishing process, as an indispensable part of the handle manufacturing process, plays a crucial role in removing burrs and oxide layers from the handle surface to achieve the specified roughness and smoothness requirements.
[0003] Currently, most of the existing handle grinding positioning fixtures on the market adopt a relatively traditional design concept. These fixtures usually have a fixed positioning structure, which uses specific clamps or slots to firmly fix the handle in a certain preset position. During the grinding process, the operator needs to move around the fixed handle and constantly adjust their own position and operating angle to grind different parts of the handle. However, this traditional technology makes the operation too troublesome for the operator. Therefore, a handle grinding positioning fixture is proposed to solve the above problems. Utility Model Content
[0004] In view of the shortcomings of the prior art, this utility model provides a handle grinding and positioning fixture to overcome the above-mentioned shortcomings of the prior art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A handle grinding and positioning fixture includes a base, a support plate fixedly installed on the top of the base, an inner shaft rotatably installed inside the support plate, a power mechanism for driving the inner shaft to rotate is provided on the back of the support plate, a connecting plate is fixedly installed in front of the inner shaft, and a clamping and positioning mechanism is provided in front of the connecting plate.
[0007] The clamping and positioning mechanism includes a hollow box fixedly installed in front of the connecting tile. An extrusion plate is movably installed inside the hollow box. Two vertical rods are fixedly installed at the bottom of the extrusion plate, extending through to the bottom of the hollow box. Both vertical rods are slidably installed inside the lower bottom wall of the hollow box. A threaded rod is threadedly installed at the bottom of the hollow box, extending through to its interior. The threaded rod is rotatably installed at the bottom of the extrusion plate.
[0008] Based on the above technical solution, the present invention can be further improved as follows.
[0009] Furthermore, the power mechanism includes an external gear ring fixedly installed outside the inner shaft. The external gear ring is located on the back of the support plate. A motor is fixedly installed on the back of the support plate. A gear is fixedly installed at the output end of the motor. The gear meshes with the bottom of the external gear ring.
[0010] Furthermore, two support blocks are fixedly installed on the top of the base, and an outer ring is fixedly installed on the top of the two support blocks, with an inner ring fixedly installed inside the outer ring.
[0011] Furthermore, a plurality of insert rods are slidably installed inside the outer ring, extending into the inner ring. Springs are slidably installed on the outside of each insert rod. The springs are located between the inner and outer rings. The outer wall of the inner shaft has grooves corresponding to the plurality of insert rods.
[0012] Furthermore, a bearing is provided at the connection between the support plate and the inner shaft, and the support plate and the inner shaft are rotatably connected by the bearing.
[0013] Furthermore, a knob is fixedly installed at the bottom of the threaded rod, and the knob is located below the hollow box.
[0014] Compared with the prior art, the beneficial effects of this utility model are: insert the handle into the hollow box, control the threaded rod to rotate in the forward direction, push the extrusion plate to rise and extrude the bottom of the handle, and fix it in the hollow box. Then, the power mechanism runs to drive the inner shaft and the fixed handle to rotate. This device design allows the operator to fix the handle and drive it to rotate more conveniently during grinding, thus improving the convenience of grinding operation. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the handle grinding and positioning fixture of this utility model from one perspective.
[0016] Figure 2 This is a schematic diagram of the handle grinding and positioning fixture of this utility model from another perspective.
[0017] Figure 3 This is a partial cross-sectional view of the top structure of the base;
[0018] Figure 4 This is a schematic diagram of a hollow box structure;
[0019] Figure 5 This is a schematic diagram showing the connection between the outer and inner ring structures;
[0020] Figure 6 This is a schematic diagram of the insertion rod and its structure.
[0021] The attached diagram lists the components represented by each number as follows:
[0022] 1. Base; 2. Support plate; 3. Inner shaft; 4. Connecting tile; 5. Hollow box; 6. Extrusion plate; 7. Vertical rod; 8. Threaded rod; 9. External gear ring; 10. Motor; 11. Gear; 12. Support block; 13. Outer ring; 14. Inner ring; 15. Insert rod; 16. Spring; 17. Groove; 18. Knob. Detailed Implementation
[0023] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0024] Example 1, as Figures 1-3 As shown, a handle grinding and positioning fixture includes a base 1, a support plate 2 fixedly installed on the top of the base 1, an inner shaft 3 rotatably installed inside the support plate 2, a power mechanism for driving the inner shaft 3 to rotate is provided on the back of the support plate 2, a connecting plate 4 fixedly installed in front of the inner shaft 3, and a clamping and positioning mechanism is provided in front of the connecting plate 4.
[0025] Specifically, the clamping and positioning mechanism includes a hollow box 5 fixedly installed in front of the connecting tile 4. An extrusion plate 6 is movably installed inside the hollow box 5. Two vertical rods 7 are fixedly installed at the bottom of the extrusion plate 6, extending through to the bottom of the hollow box 5. Both vertical rods 7 are slidably installed inside the lower bottom wall of the hollow box 5. A threaded rod 8 is threadedly installed at the bottom of the hollow box 5, extending through to its interior. The threaded rod 8 is rotatably installed at the bottom of the extrusion plate 6.
[0026] The bottom of the device is supported by the base 1, and the inner shaft 3 is supported on the top of the base 1 by the support plate 2 for rotation. The extrusion plate 6 can be restricted to the inside of the hollow box 5 by the two vertical rods 7. When in use, first insert the handle into the inside of the hollow box 5, then operate the threaded rod 8 to rotate in the forward direction, thereby pushing the extrusion plate 6 to rise and extrude the bottom of the handle. At this time, the handle can be squeezed and fixed inside the hollow box 5. After that, the power mechanism can drive the inner shaft 3 and the fixed handle to rotate, thereby significantly improving the convenience of personnel during grinding. After grinding is completed, operating the threaded rod 8 to rotate in the reverse direction can pull the extrusion plate 6 down, thereby allowing the handle to be removed from the inside of the hollow box 5.
[0027] Example 2, as Figures 1-3 As shown, this embodiment is a further improvement based on embodiment 1, and its specific details are as follows:
[0028] The power mechanism includes an external gear ring 9 fixedly installed on the outside of the inner shaft 3. The external gear ring 9 is located on the back of the support plate 2. A motor 10 is fixedly installed on the back of the support plate 2. A gear 11 is fixedly installed on the output end of the motor 10. The gear 11 meshes with the bottom of the external gear ring 9.
[0029] With this configuration, the installed motor 10 drives the gear 11 to rotate at the bottom of the outer gear ring 9, which in turn drives the inner shaft 3 and the clamping and positioning mechanism to rotate.
[0030] Example 3, as Figures 1-5 As shown, this embodiment is a further improvement based on embodiment 1, and its specific details are as follows:
[0031] Two support blocks 12 are fixedly installed on the top of the base 1. An outer ring 13 is fixedly installed on the top of the two support blocks 12. An inner ring 14 is fixedly installed inside the outer ring 13.
[0032] With this configuration, the outer ring 13 and the inner ring 14 are supported on the top of the base 1 by two support blocks 12, so that the outer ring 13 and the inner ring 14 correspond to the position of the inner shaft 3.
[0033] Example 4, as Figures 1-6 As shown, this embodiment is a further improvement based on embodiment 1, and its specific details are as follows:
[0034] Multiple insert rods 15 are slidably installed inside the outer ring 13, extending into the inner ring 14. Springs 16 are slidably installed on the outside of each insert rod 15. The multiple springs 16 are located between the inner ring 14 and the outer ring 13. The outer wall of the inner shaft 3 has grooves 17 corresponding to the multiple insert rods 15.
[0035] With this configuration, the unfolding of multiple springs 16 can press multiple insert rods 15 into the interior of multiple grooves 17. When the motor 10 stops running, the pressing force can prevent the inner shaft 3 from rotating automatically.
[0036] Example 5, as Figure 1 As shown, this embodiment is a further improvement based on embodiment 1, and its specific details are as follows:
[0037] A bearing is provided at the connection between the support plate 2 and the inner shaft 3, and the support plate 2 and the inner shaft 3 are rotatably connected by the bearing.
[0038] This configuration allows the installed bearings to rotate the inner shaft 3 more smoothly inside the support plate 2.
[0039] Example 6, as Figures 1-3 As shown, this embodiment is a further improvement based on embodiment 1, and its specific details are as follows:
[0040] A knob 18 is fixedly installed at the bottom of the threaded rod 8, and the knob 18 is located below the hollow box 5.
[0041] This design makes it easier to control the rotation of the threaded rod 8 by holding the knob 18.
[0042] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A handle grinding and positioning fixture, comprising a base (1), characterized in that: A support plate (2) is fixedly installed on the top of the base (1), and an inner shaft (3) is rotatably installed inside the support plate (2). A power mechanism for driving the inner shaft (3) to rotate is provided on the back of the support plate (2). A connecting tile (4) is fixedly installed in front of the inner shaft (3), and a clamping and positioning mechanism is provided in front of the connecting tile (4). The clamping and positioning mechanism includes a hollow box (5) fixedly installed in front of the connecting tile (4). An extrusion plate (6) is movably installed inside the hollow box (5). Two vertical rods (7) are fixedly installed at the bottom of the extrusion plate (6) and extend to the bottom of the hollow box (5). Both vertical rods (7) are slidably installed inside the lower bottom wall of the hollow box (5). A threaded rod (8) is threadedly installed at the bottom of the hollow box (5) and extends to its interior. The threaded rod (8) is rotatably installed at the bottom of the extrusion plate (6).
2. The handle grinding and positioning fixture according to claim 1, characterized in that: The power mechanism includes an external gear ring (9) fixedly installed outside the inner shaft (3). The external gear ring (9) is located on the back of the support plate (2). A motor (10) is fixedly installed on the back of the support plate (2). A gear (11) is fixedly installed at the output end of the motor (10). The gear (11) meshes with the bottom of the external gear ring (9).
3. The handle grinding and positioning fixture according to claim 1, characterized in that: The base (1) has two support blocks (12) fixedly installed on its top. The top of the two support blocks (12) has an outer ring (13) fixedly installed on its top. The inner ring (14) is fixedly installed inside the outer ring (13).
4. The handle grinding and positioning fixture according to claim 3, characterized in that: Multiple insert rods (15) are slidably installed inside the outer ring (13) and extend into the inner ring (14). Springs (16) are slidably installed on the outside of each insert rod (15). The multiple springs (16) are located between the inner ring (14) and the outer ring (13). The outer wall of the inner shaft (3) is provided with grooves (17) corresponding to the multiple insert rods (15).
5. The handle grinding and positioning fixture according to claim 1, characterized in that: A bearing is provided at the connection between the support plate (2) and the inner shaft (3), and the support plate (2) and the inner shaft (3) are rotatably connected by the bearing.
6. The handle grinding and positioning fixture according to claim 1, characterized in that: A knob (18) is fixedly installed at the bottom of the threaded rod (8), and the knob (18) is located below the hollow box (5).