Expansion type tool clamp
By designing an expanded tool clamp including bottom plate, back clamping plate, rotor, ratchet and other components, the problems of poor clamping effect of non-circular workpieces and inclination of workpieces in the prior art are solved, and stable clamping and convenience of use for workpieces of different shapes are achieved.
Patent Information
- Application Number
- CN202421522899.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-01
AI Technical Summary
Existing expansion tooling fixtures have poor effect when clamping non-circular workpieces, which can easily lead to tilting of the workpiece and inconvenient use.
An expansion tooling fixture including a base plate, a back clamp, a rotor, a ratchet, a clamp, a compression spring, a crossbar, an extension shaft, a bracket, a push rod and a fixing clip are designed. By rotating the rotor counterclockwise, the fixing clamp applies pressure to the workpiece, and the rotor only allows the rotation counterclockwise. The extension shaft allows the fixing clamp to rotate and adjust the angle to ensure fit with the workpiece surface.
Stable clamping of workpieces of different shapes is achieved, the workpiece tilt is avoided, and the convenience of use and clamping effect is improved.
Smart Images
Figure CN222843913U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of clamps, and in particular relates to an expansion type tooling clamp. Background Art
[0002] A fixture is a device used to fix the workpiece in the mechanical manufacturing process so that it occupies the correct position for construction or inspection. In a broad sense, any device used to quickly, conveniently and safely install the workpiece in any process can be called a fixture.
[0003] After searching, Chinese patent application number 2022230318969 discloses an expansion tooling fixture, including a base, an upper elastic clamping piece and a lower elastic clamping piece, wherein the base is fixedly connected with symmetrically arranged side plates on both sides, and movable grooves are opened on the two side plates, and push-pull rods are slidably connected to the inner walls of the two movable grooves, and the first fixed plate is fixedly connected with the upper elastic clamping piece on both sides; the utility model can start a dual-axis motor to drive the two screw rods to rotate, and the two screw rods drive the two threaded blocks to move horizontally, and the two threaded blocks drive the two guide rods to move in relative or opposite directions, so that the two guide rods drive the two second fixed plates to move in relative or opposite directions, so that the two second fixed plates can stretch or squeeze the lower elastic clamping piece, thereby adjusting the arc diameter of the lower elastic clamping piece, which is convenient for placing steel rods of different thicknesses on the lower elastic clamping piece. It is more practical and suitable for wide promotion and use.
[0004] Although the above patent can adjust the arc diameter of the lower elastic clamping part, which is convenient for placing steel rods of different thicknesses on the lower elastic clamping part, it is relatively practical and suitable for wide promotion and use. However, in actual use, it is not convenient to clamp and fix workpieces of different shapes, and the clamping effect on non-circular workpieces is poor. It is easy to cause the workpiece to tilt during clamping, which brings inconvenience to the user.
[0005] Therefore, it is necessary to modify it to facilitate clamping and fixing workpieces of different shapes, to have a better clamping effect on workpieces of various shapes, to avoid tilting of the workpiece during clamping, and to facilitate use by users. Utility Model Content
[0006] In view of the problems raised by the background technology, the utility model studies and designs an expandable tooling fixture, the purpose of which is to provide an expandable tooling fixture that is suitable for clamping and fixing workpieces of different shapes, has a good clamping effect on workpieces of various shapes, and is convenient for users to use.
[0007] The technical solution of this utility model:
[0008] The cam is secured to the left of the chassis and is provided with a support shaft, the top of which is rotatably connected to a rotating wheel. A ratchet is sleeved on the surface of the support shaft. A clamping plate is fixedly connected to the bottom of the rotating wheel on all sides. The bottom of the clamping plate fits the top of the ratchet. A compression spring is fixedly connected to the bottom of the ratchet on all sides. The bottom of the compression spring is fixedly connected to the top of the base plate. A cross bar is fixedly connected to the right side of the rotating wheel. An extension shaft is connected to the right side rotating shaft on the back side of the cross bar. A bracket is hinged on the rear end of the extension shaft. Push rods are fixedly connected to the left and right sides of the back side of the bracket. A fixing clamp is fixedly connected to the rear end of the push rod.
[0009] Preferably, the bottom of the cross bar is fixedly connected to a vertical bar, the right side of the top of the bottom plate is fixedly connected to an arc track, a slide groove is provided on the top of the arc track, and the bottom of the vertical bar is slidably connected to the inner wall of the slide groove.
[0010] Preferably, a circular hole located above the compression spring is opened around the surface of the ratchet, a limiting rod is arranged inside the compression spring, the bottom of the limiting rod is fixedly connected to the top of the base plate, and the top of the limiting rod passes through the top of the circular hole and is fixedly connected to the limiting plate.
[0011] Preferably, an electric telescopic rod is fixedly connected to the rear left side of the top of the base plate, a movable plate is fixedly connected to the output end of the electric telescopic rod, the bottom of the movable plate is slidably connected to the top of the base plate, and a side plate is fixedly connected to the rear right side of the top of the base plate.
[0012] Preferably, baffles are fixedly connected to the left and right sides of the extension shaft, a tension spring is fixedly connected to the back of the baffle, the rear end of the tension spring is fixedly connected to the front of the bracket, and a rust-proof coating is provided on the surface of the tension spring.
[0013] Preferably, a rubber pad is fixedly connected to the back of the fixing clip, a plurality of evenly distributed anti-skid grooves are provided on the surface of the rubber pad, and anti-skid patterns are arranged on the surface of the rubber pad.
[0014] The beneficial effects of the utility model are as follows: the utility model has a reasonable structure and a novel design. The workpiece to be fixed is placed above the bottom plate, between the back clamp and the fixing clamp. Then, the cross bar can be driven to rotate by rotating the rotating wheel counterclockwise. When the cross bar rotates counterclockwise, it drives its right end to approach the back clamp, so that the fixing clamp applies pressure to the workpiece to push it toward the back clamp. When the rotating wheel rotates, the clamping plate is driven to rotate above the ratchet so that the rotating wheel can only rotate counterclockwise, thereby preventing the fixing clamp from loosening. An extension shaft is provided so that the fixing clamp can rotate according to the shape of the workpiece. The bracket and the extension shaft are set to be hinged so that the angle of the fixing clamp can be adjusted, which is convenient for fixing. The clamp fits the surface of the workpiece, and when the workpiece needs to be released, the ratchet can be pushed downward to release the fixation of the clamping plate, so that the rotating wheel can rotate clockwise, driving the fixing clamp away from the workpiece, thereby facilitating the clamping and fixing of workpieces of different shapes. It has a good clamping effect on workpieces of various shapes, avoids the workpiece from tilting during clamping, and is convenient for users to use. The vertical rod, arc track and slide groove are used together to strengthen the support of the cross bar, making the cross bar more stable and smooth when rotating with the rotating wheel, and at the same time avoiding the shaking and tilting of the cross bar when swinging, which affects normal use, and has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the utility model;
[0016] Figure 2 It is a schematic diagram of the top view structure of the utility model;
[0017] Figure 3 It is a schematic diagram of the top view of the ratchet wheel in the utility model;
[0018] Figure 4 It is a schematic diagram of the structure of the ratchet in the utility model;
[0019] Figure 5 For this utility model Figure 2 Schematic diagram of the enlarged structure of A.
[0020] Among them: 1. bottom plate, 2. back splint, 3. support shaft, 4. rotating wheel, 5. ratchet, 6. clamping plate, 7. compression spring, 8. cross bar, 9. extension shaft, 10. bracket, 11. push rod, 12. fixing clamp, 13. vertical rod, 14. arc track, 15. slide groove, 16. round hole, 17. limit rod, 18. limit plate, 19. electric telescopic rod, 20. moving plate, 21. side plate, 22. baffle, 23. tension spring, 24. rubber pad. DETAILED DESCRIPTION
[0021] The utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0022] like Figure 1 to Figure 5 As shown, an expansion type tooling fixture comprises a base plate 1, a back plate 2 is fixedly connected to the rear side of the top of the base plate 1, a support shaft 3 is fixedly connected to the left side of the top of the base plate 1, a rotating wheel 4 is rotatably connected to the top of the support shaft 3, a ratchet 5 is sleeved on the surface of the support shaft 3, a clamping plate 6 is fixedly connected to the bottom of the rotating wheel 4 on all sides, the bottom of the clamping plate 6 fits with the top of the ratchet 5, a compression spring 7 is fixedly connected to the bottom of the ratchet 5 on all sides, the bottom of the compression spring 7 is fixedly connected to the top of the base plate 1, a cross bar 8 is fixedly connected to the right side of the rotating wheel 4, an extension shaft 9 is connected to the right side rotating shaft on the back of the cross bar 8, a bracket 10 is hinged at the rear end, a push rod 11 is fixedly connected to the left and right sides of the back of the bracket 10, and a fixing clamp 12 is fixedly connected to the rear end of the push rod 11.
[0023] like Figure 1 As shown, the bottom of the cross bar 8 is fixedly connected with a vertical bar 13, the right side of the top of the bottom plate 1 is fixedly connected with an arc track 14, the top of the arc track 14 is provided with a slide groove 15, and the bottom of the vertical bar 13 is slidably connected to the inner wall of the slide groove 15.
[0024] In this embodiment, by setting the vertical rod 13, the arc track 14 and the slide groove 15, the cross bar 8 is strengthened and supported, so that the cross bar 8 is more stable and smooth when rotating with the rotating wheel 4, and at the same time, it is avoided that the cross bar 8 shakes and tilts when swinging, affecting normal use.
[0025] like Figure 1 , Figure 4 As shown, a circular hole 16 located above the compression spring 7 is opened around the surface of the ratchet 5, and a limiting rod 17 is arranged inside the compression spring 7. The bottom of the limiting rod 17 is fixedly connected to the top of the base plate 1, and the top of the limiting rod 17 passes through the top of the circular hole 16 and is fixedly connected to the limiting plate 18.
[0026] In this embodiment, the ratchet 5 is fixed by the use of the circular hole 16, the limiting rod 17 and the limiting plate 18, so that the ratchet 5 can only move up and down when in use, thereby preventing the ratchet 5 from shaking left and right and rotating when in use, resulting in a deteriorated fixing effect on the rotating wheel 4, affecting the fixation of the workpiece by the fixing clamp 12.
[0027] like Figure 2 As shown, an electric telescopic rod 19 is fixedly connected to the rear of the left side of the top of the base plate 1, and a movable plate 20 is fixedly connected to the output end of the electric telescopic rod 19. The bottom of the movable plate 20 is slidably connected to the top of the base plate 1, and a side plate 21 is fixedly connected to the rear of the right side of the top of the base plate 1.
[0028] In this embodiment, by setting up the coordinated use of the electric telescopic rod 19, the movable plate 20 and the side plate 21, the electric telescopic rod 19 can be started to drive the movable plate 20 to move to the right, thereby pushing the workpiece to the right so that the right side is in contact with the side plate 21, thereby fixing both sides of the workpiece and further improving the clamping effect of the workpiece.
[0029] like Figure 5 As shown, baffles 22 are fixedly connected to the left and right sides of the extension shaft 9, a tension spring 23 is fixedly connected to the back of the baffle 22, a rear end of the tension spring 23 is fixedly connected to the front of the bracket 10, and a rust-proof coating is provided on the surface of the tension spring 23.
[0030] In this embodiment, by setting up the baffle 22 and the tension spring 23, the left and right ends of the bracket 10 are supported, so that the fixing clamp 12 is always in a horizontal state when not in use, and when in contact with the workpiece, it tilts left and right according to the shape of the workpiece, so as to facilitate clamping and fixing the workpiece.
[0031] like Figure 2 As shown, a rubber pad 24 is fixedly connected to the back of the fixing clip 12 , and a plurality of evenly distributed anti-skid grooves are provided on the surface of the rubber pad 24 , and anti-skid patterns are provided on the surface of the rubber pad 24 .
[0032] In this embodiment, by providing a rubber pad 24, the friction between the surface of the fixing clamp 12 and the surface of the workpiece is increased, so that the fixing clamp 12 can fix the workpiece more firmly when in contact with the workpiece, avoiding slipping when clamping the workpiece and affecting normal use.
[0033] When the workpiece is in use, the workpiece to be fixed is placed above the bottom plate 1, between the back clamp 2 and the fixing clamp 12, and then the cross bar 8 can be driven to rotate by rotating the rotating wheel 4 counterclockwise. When the cross bar 8 rotates counterclockwise, it drives its right end to approach the back clamp 2, so that the fixing clamp 12 applies pressure to the workpiece to push it toward the back clamp 2. At the same time, when the rotating wheel 4 rotates, it drives the clamping plate 6 to rotate above the ratchet 5 so that the rotating wheel 4 can only rotate counterclockwise to prevent the fixing clamp 12 from loosening. By setting the extension shaft 9, the fixing clamp 12 can be rotated according to the shape of the workpiece. By setting the bracket 10 and the extension shaft 9 to be hinged, the angle of the fixing clamp 12 can be adjusted, which is convenient for the fixing clamp 12 to fit with the surface of the workpiece. At the same time, when it is necessary to release the fixation of the workpiece, the ratchet 5 can be pushed downward to release the fixation of the clamping plate 6, so that the rotating wheel 4 can rotate clockwise, driving the fixing clamp 12 away from the workpiece, thereby achieving the effect of facilitating the clamping and fixing of workpieces of different shapes, having a good clamping effect on workpieces of various shapes, avoiding the tilting of the workpiece during clamping, and facilitating the use of the user.
[0034] In summary, the utility model achieves the expected effect.
Claims
1. An expansion fixture, comprising a base plate, characterized in that: The rear side of the top of the base plate is fixedly connected with a back clamp, the left side of the top of the base plate is fixedly connected with a supporting shaft, the top of the supporting shaft is rotatably connected with a rotating wheel, the surface of the supporting shaft is sleeved with a ratchet, the four sides of the bottom of the rotating wheel are fixedly connected with a clamping plate, the bottom of the clamping plate is fitted with the top of the ratchet, the four sides of the bottom of the ratchet are fixedly connected with a compression spring, the bottom of the compression spring is fixedly connected with the top of the base plate, the right side of the rotating wheel is fixedly connected with a cross bar, the right side rotating shaft on the back of the cross bar is connected with an extension shaft, the rear end of the extension shaft is hinged with a bracket, the left and right sides of the back of the bracket are fixedly connected with push rods, and the rear end of the push rods is fixedly connected with a fixing clamp.
2. An expansion fixture as claimed in claim 1, characterized in that: The bottom of the cross bar is fixedly connected with a vertical bar, the right side of the top of the bottom plate is fixedly connected with an arc track, the top of the arc track is provided with a slide groove, and the bottom of the vertical bar is slidably connected with the inner wall of the slide groove.
3. An expansion fixture as claimed in claim 1, characterized in that: A circular hole located above the compression spring is opened around the surface of the ratchet, and a limiting rod is arranged inside the compression spring. The bottom of the limiting rod is fixedly connected to the top of the base plate, and the top of the limiting rod passes through the top of the circular hole and is fixedly connected to the limiting plate.
4. An expansion fixture as claimed in claim 1, characterized in that: An electric telescopic rod is fixedly connected to the rear of the left side of the top of the bottom plate, a movable plate is fixedly connected to the output end of the electric telescopic rod, the bottom of the movable plate is slidably connected to the top of the bottom plate, and a side plate is fixedly connected to the rear of the right side of the top of the bottom plate.
5. An expansion fixture as claimed in claim 1, characterized in that: Baffles are fixedly connected to the left and right sides of the extension shaft, a tension spring is fixedly connected to the back of the baffle, a rear end of the tension spring is fixedly connected to the front of the bracket, and a rust-proof coating is provided on the surface of the tension spring.
6. An expansion fixture as claimed in claim 1, characterized in that: A rubber pad is fixedly connected to the back of the fixing clip, a plurality of evenly distributed anti-skid grooves are provided on the surface of the rubber pad, and anti-skid patterns are arranged on the surface of the rubber pad.