Workpiece hole machining clamp
By using a combination of bidirectional screws and clamping blocks in the workpiece processing fixture, the multi-directional clamping of the workpiece is achieved, which solves the problem of poor clamping of irregular-shaped workpieces in the prior art, and improves the clamping effect and flexibility.
Patent Information
- Application Number
- CN202421798035.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-29
AI Technical Summary
When clamping irregularly shaped workpieces, the clamping effect is poor and can only be clamped in the left and right directions.
A workpiece hole machining fixture is designed, using a combination of a bidirectional screw and a clamping block. By rotating the bidirectional screw, the clamping block clamps the workpiece from the left and right and front and rear directions to achieve multi-directional clamping.
The fixture can effectively clamp irregularly shaped workpieces, improve clamping effect, and facilitate clamping workpieces with flat surfaces and large volume through an adjustable clamping block design.
Smart Images
Figure CN222818876U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of workpiece processing, in particular to a workpiece hole processing fixture. Background Art
[0002] A workpiece hole refers to a cylindrical inner or outer surface formed during the machining process. It can also refer to a portion of other inner surfaces determined by a single size. The hole formation process includes processing methods such as casting, forging, turning, boring, and grinding, as well as operations such as drilling, reaming, boring, and countersinking in benchwork. When hole machining is performed on a workpiece, a fixture is required to pre-fix the workpiece.
[0003] The patent with the patent authorization announcement number CN218534210U discloses a workpiece processing fixture, including a workbench and a plurality of groups of fixed clamps and pushing mechanisms arranged opposite to each other on the workbench, a guide block with a limiting through hole is arranged between each group of the fixed clamps and the pushing mechanism, and the pushing mechanism includes a pressure block and a driving part capable of providing a force to the pressure block. Although the above patent can reduce the impact of the vibration of the driving part on the pressure block, there are still some shortcomings in actual use. For example, the fixture drives the second workpiece support block to approach the first workpiece support block through the driving part, so that the second workpiece support block cooperates with the first workpiece support block to clamp the workpiece. This clamping method can only clamp the workpiece in the left and right directions, resulting in poor clamping effect when clamping irregularly shaped workpieces.
[0004] Therefore, there is a particular need for a workpiece hole machining fixture with good clamping effect to solve the problems existing in the prior art. Utility Model Content
[0005] In order to overcome the disadvantage that the existing patent drives the second workpiece support block to approach the first workpiece support block through a driving unit so that the second workpiece support block cooperates with the first workpiece support block to clamp the workpiece, this clamping method can only clamp the workpiece in the left and right directions, resulting in poor clamping effect when clamping irregular-shaped workpieces, the utility model provides a workpiece hole processing fixture with good clamping effect.
[0006] The utility model is realized through the following technical approaches: a workpiece hole processing fixture, including a base, a workbench, a bidirectional screw rod I, a moving block and a clamping block I, the top of the base is fixedly connected with the workbench, the middle position of the lower part of the workbench is rotatably connected with the bidirectional screw rod I, the external thread of the bidirectional screw rod I is connected with the moving blocks distributed on the left and right, a cavity is provided in the upper part of the moving block, the clamping block I is inserted in the cavity, the bidirectional screw rod I is rotated, and the moving block drives the clamping block I to move inwards to clamp the workpiece for the first time, and also includes a bidirectional screw rod II and a clamping block II, the middle position of the clamping block I is rotatably connected with the bidirectional screw rod II, the external thread of the bidirectional screw rod II is connected with the clamping blocks II distributed on the front and back, and the bidirectional screw rod II is rotated to make the clamping block II move inwards for the second time to clamp the workpiece.
[0007] Preferably, it also includes knob I and knob II, the right end of the bidirectional screw I passes through the outside of the workbench and is fixedly connected to knob I, the front end of the bidirectional screw II passes through the outside of the clamping block I and is fixedly connected to knob II, and the edges of knob I and knob II are provided with a number of semicircular protrusions distributed along the circumferential direction.
[0008] Preferably, it also includes an insert block, a guide rod and a wedge block. The bottom of the clamping block I is fixedly connected to an arrow-shaped insert block, the upper part of the moving block is slidably connected to the guide rod, there is a certain friction between the guide rod and the moving block, and the rear end of the guide rod is fixedly connected to a wedge block. The wedge block is in contact with the insert block, so that the clamping block I is fixed on the moving block. By pulling the guide rod backward, the wedge block moves backward and breaks contact with the insert block.
[0009] Preferably, a spring is also included, and a spring for assisting resetting is sleeved on the rear end of the guide rod, and both ends of the spring are respectively connected to the moving block and the wedge block.
[0010] Preferably, a handle is further included, and a rectangular handle with a hollow structure is fixedly connected to the front end of the guide rod.
[0011] Preferably, a rubber pad is also included, and the rubber pad is connected to the sides of the two clamping blocks I that are away from each other.
[0012] From the above description of the structure of the utility model, it can be known that the design starting point, concept and advantages of the utility model are: 1. By setting a bidirectional screw rod Ⅰ and a clamping block Ⅰ to clamp the workpiece from the left and right directions, and then by setting a bidirectional screw rod Ⅱ and a clamping block Ⅱ to clamp the workpiece from the front and back directions, the purpose of clamping the workpiece in multiple directions is achieved, which is convenient for clamping irregular-shaped workpieces and also improves the clamping effect of the fixture.
[0013] 2. By setting the insert block, guide rod and wedge block, pull the guide rod forward to drive the wedge block to move forward and disengage from the insert block, remove the clamping block I from the workbench, adjust the clamping block I to 180 degrees and put it back on the workbench, so that the side of the clamping block I with the rubber pad faces inward, so as to facilitate clamping of workpieces with flat surfaces and large volumes. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.
[0015] Figure 2 It is a three-dimensional structural schematic diagram of the workbench, knob I and bidirectional screw I of the utility model.
[0016] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of the knob II, the bidirectional screw II and the clamping block II of the utility model.
[0017] Figure 4 The utility model is a three-dimensional cross-sectional structural schematic diagram of the guide rod, spring, handle and other components.
[0018] Explanation of the accompanying drawings: 1. base, 2. workbench, 3. knob I, 4. bidirectional screw I, 401, moving block, 5. clamping block I, 6. knob II, 7. bidirectional screw II, 8. clamping block II, 9. insert block, 10. wedge block, 11. guide rod, 12. spring, 13. handle, 14. rubber pad. DETAILED DESCRIPTION
[0019] The following description is only a preferred embodiment of the present invention and does not limit the protection scope of the present invention.
[0020] Embodiment: A workpiece hole machining fixture, see Figure 1-Figure 4As shown, it includes a base 1, a workbench 2, a bidirectional screw rod Ⅰ4, a knob Ⅰ3, a moving block 401, a clamping block Ⅰ5, an insert block 9, a guide rod 11, a wedge block 10, a spring 12, a handle 13 and a rubber pad 14. The top of the base 1 is connected to the workbench 2 by welding, and the middle position of the lower part of the workbench 2 is rotatably connected to the bidirectional screw rod Ⅰ4. The right end of the bidirectional screw rod Ⅰ4 passes through the outside of the workbench 2 and is connected to the knob Ⅰ3 by welding. The outer thread of the bidirectional screw rod Ⅰ4 is connected to the left and right The movable block 401 is distributed, and a cavity is provided in the upper part of the movable block 401, and a clamping block Ⅰ5 is inserted in the cavity. The bottom of the clamping block Ⅰ5 is connected to an arrow-shaped plug-in block 9 by welding. The upper part of the movable block 401 is slidably connected to a guide rod 11, and there is a certain friction between the guide rod 11 and the movable block 401. The rear end of the guide rod 11 is connected to a wedge block 10 by welding. The wedge block 10 contacts the plug-in block 9, so that the clamping block Ⅰ5 is fixed on the movable block 401, and the guide rod 11 The rear end sleeve is provided with a spring 12 for assisting resetting, and the two ends of the spring 12 are respectively connected to the moving block 401 and the wedge block 10. The front end of the guide rod 11 is connected to a rectangular handle 13 of a hollow structure by welding. The two clamping blocks Ⅰ5 are connected to a rubber pad 14 on the side away from each other. It also includes a bidirectional screw Ⅱ7, a knob Ⅱ6 and a clamping block Ⅱ8. The middle position of the clamping block Ⅰ5 is rotatably connected to the bidirectional screw Ⅱ7. The front end of the bidirectional screw Ⅱ7 passes through the outside of the clamping block Ⅰ5 and is welded. The two-way screw Ⅰ4 is connected with a knob Ⅱ6, and the edges of the knob Ⅰ3 and the knob Ⅱ6 are provided with a plurality of semicircular protrusions distributed along the circumferential direction. The external thread of the two-way screw Ⅱ7 is connected with the clamping block Ⅱ8 distributed in the front and rear. By rotating the two-way screw Ⅰ4, the moving block 401 drives the clamping block Ⅰ5 to move inward for the first time to clamp the workpiece, and then by rotating the two-way screw Ⅱ7, the clamping block Ⅱ8 moves inward for the second time to clamp the workpiece, and finally, by pulling the guide rod 11 backward, the wedge block 10 moves backward and disengages from the insert block 9.
[0021] First, the staff puts the workpiece on the table of the workbench 2, then pinches the knob Ⅰ3 with his hand to rotate the bidirectional screw Ⅰ4, so that the moving block 401 drives the clamping block Ⅰ5 to move inward to clamp the workpiece from the left and right directions, and then pinches the knob Ⅱ6 with his hand to rotate the bidirectional screw Ⅱ7, so that the clamping block Ⅱ8 moves inward to clamp the workpiece from the front and back directions, so as to achieve the purpose of clamping the workpiece in multiple directions, facilitate clamping irregular-shaped workpieces, and also improve the clamping effect of the fixture. After clamping, the workpiece is processed with holes. When it is necessary to clamp a workpiece with a flat surface and a large volume, the staff pulls the handle 13 to pull the guide rod 11 forward. The spring 12 is compressed accordingly, so that the guide rod 11 drives the wedge block 10 to move forward and disengage from the plug block 9, and then the clamping block Ⅰ5 is taken off the workbench 2 and disengaged from the moving block 401. The clamping block Ⅰ5 is adjusted to 180 degrees and then put back on the workbench 2 and plugged into the moving block 401. At this time, the side of the clamping block Ⅰ5 with the rubber pad 14 faces inward, so as to facilitate clamping of workpieces with flat surfaces and large volumes. Then the handle 13 is released, and the spring 12 returns to its original state, so that the guide rod 11 drives the wedge block 10 to move backward and contact the plug block 9, thereby fixing the clamping block Ⅰ5 on the moving block 401.
[0022] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A workpiece hole processing fixture, comprising a base (1), a worktable (2), a bidirectional screw rod I (4), a moving block (401) and a clamping block I (5), wherein the top of the base (1) is fixedly connected to the worktable (2), the middle position of the lower part of the worktable (2) is rotatably connected to the bidirectional screw rod I (4), the outer part of the bidirectional screw rod I (4) is threadedly connected to the moving blocks (401) distributed on the left and right, the upper part of the moving block (401) is provided with a cavity, and the clamping block I (5) is inserted into the cavity, characterized in that: It also includes a bidirectional screw rod II (7) and a clamping block II (8). The middle position of the clamping block I (5) is rotatably connected to the bidirectional screw rod II (7). The outer portion of the bidirectional screw rod II (7) is threadedly connected to the clamping blocks II (8) distributed front and back.
2. A workpiece hole machining fixture according to claim 1, characterized in that: It also includes a knob I (3) and a knob II (6). The right end of the bidirectional screw rod I (4) passes through the outside of the workbench (2) and is fixedly connected to the knob I (3). The front end of the bidirectional screw rod II (7) passes through the outside of the clamping block I (5) and is fixedly connected to the knob II (6).
3. A workpiece hole machining fixture according to claim 2, characterized in that: It also includes an insert block (9), a guide rod (11) and a wedge block (10); the bottom of the clamping block I (5) is fixedly connected to an arrow-shaped insert block (9); the upper part of the moving block (401) is slidably connected to the guide rod (11); there is a certain friction force between the guide rod (11) and the moving block (401); the rear end of the guide rod (11) is fixedly connected to the wedge block (10); the wedge block (10) contacts the insert block (9), so that the clamping block I (5) is fixed on the moving block (401).
4. A workpiece hole machining fixture according to claim 3, characterized in that: It also includes a spring (12), and the rear end of the guide rod (11) is sleeved with a spring (12) for assisting resetting.
5. A workpiece hole machining fixture according to claim 4, characterized in that: It also includes a handle (13), and the front end of the guide rod (11) is fixedly connected to the rectangular handle (13) with a hollow structure.
6. A workpiece hole machining fixture according to claim 5, characterized in that: It also includes a rubber pad (14), and the rubber pad (14) is connected to the sides of the two clamping blocks I (5) that are away from each other.