Tool clamp for clamping special-shaped workpiece

Abstract

The utility model relates to the technical field of work fixtures, in particular to a work fixture for clamping special-shaped workpieces, which comprises a clamping table, a clamping mechanism is arranged at the top of the clamping table and comprises a cross-shaped mounting groove, and the cross-shaped mounting groove is arranged at the top of the clamping table. The left end and the right end of the interior of the cross-shaped mounting groove are slidably connected with first driving blocks, the number of the first driving blocks is two, and the left side and the right side of the top of the clamping table are in lap joint with first arc-shaped clamping plates. And the inner walls of the two first arc-shaped clamping plates and the inner walls of the two second arc-shaped clamping plates are attached to the periphery of the outer wall of the circular special-shaped workpiece, so that the circular special-shaped workpiece can be conveniently and rapidly clamped and fixed, and the stability of the circular special-shaped workpiece during clamping and fixing is improved. And the skid resistance between the inner wall of the arc-shaped clamping plate and the workpiece is conveniently improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a tooling fixture used for clamping special-shaped workpieces. Background Art

[0002] Special-shaped workpieces are those with unusual, irregular shapes. Compared to ordinary workpieces, they often possess unique characteristics, such as high complexity, precision, and machining difficulty. Due to their complex shapes and machining challenges, their processing requires high technical skills, is challenging, and is costly. Examples of special-shaped workpieces include circular workpieces (disks), tapered workpieces (cones), and polygonal workpieces (hexagonal prisms).

[0003] Currently, when processing workpieces, such as grinding, drilling, polishing, etc., flat-nose pliers are often used to fix the workpieces. However, when fixing special-shaped workpieces such as round ones, the jaws of the flat-nose pliers are difficult to fit with the outside of the workpiece, making the clamping not stable enough. As a result, the special-shaped round workpieces are prone to shaking during processing, which affects the processing of the workpiece and needs to be improved. Utility Model Content

[0004] In view of the technical problems existing in the background technology, the purpose of the present utility model is to provide a tooling fixture for clamping special-shaped workpieces, which is convenient for clamping the workpiece and makes the clamping process more stable and efficient.

[0005] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0006] The top of the fixing plate is fixedly mounted on the workbench, and the fixing plate is mounted on a linking member connected to the fixing plate.

[0007] Preferably, the driving member includes a No. 1 driving block and a No. 2 driving block, wherein the No. 1 driving block is respectively slidably connected to the left and right ends inside the cross-shaped mounting groove, and the No. 2 driving block is respectively slidably connected to the front and rear ends inside the cross-shaped mounting groove, and the middle part of the bottom of the No. 1 arc-shaped splint is overlapped with the top of the No. 1 driving block, and the middle part of the bottom of the No. 2 arc-shaped splint is overlapped with the top of the No. 2 driving block.

[0008] Preferably, the bottom of the positioning block (31) is fixedly connected to the top of the first driving block and the second driving block.

[0009] Preferably, motor No. 1 is fixedly installed on the left side of the clamping table, the output end of motor No. 1 extends to the left end of the inner cavity of the cross-shaped mounting groove and is fixedly connected to bidirectional screw No. 1, the right end of bidirectional screw No. 1 is rotatably connected to the right end inside the cross-shaped mounting groove, and the internal symmetrical thread of drive block No. 1 is connected to the outer wall of bidirectional screw No. 1.

[0010] Preferably, a No. 2 motor is fixedly installed at the rear end of the clamping table, and the output end of the No. 2 motor extends to the rear end of the inner cavity of the cross-shaped mounting groove and is fixedly connected to a No. 2 bidirectional screw rod, and the No. 2 bidirectional screw rod is located below the No. 1 bidirectional screw rod, and one end of the No. 2 bidirectional screw rod is rotatably connected to the front end of the inner cavity of the cross-shaped mounting groove, and the internal symmetrical threads of the two No. 2 drive blocks are sleeved on the outer wall of the No. 2 bidirectional screw rod.

[0011] Preferably, a magnetic sheet is fixedly embedded in the top of the positioning block, an iron sheet is fixedly embedded in the top of the inner cavity of the positioning groove, and the bottom of the iron sheet is magnetically connected to the top of the magnetic sheet.

[0012] Preferably, one side of the top of the No. 1 drive block and the No. 2 drive block are fixedly connected to a baffle, a connecting plate is provided on one side of the baffle, a handle is fixedly connected to the middle of one side of the connecting plate, two No. 1 openings are provided inside the baffle, two No. 2 openings are provided below one side of the No. 1 arc-shaped splint and the No. 2 arc-shaped splint, and one end of the insertion rod passes through the No. 2 opening and the No. 1 opening and is fixedly connected to the other side of the connecting plate.

[0013] Preferably, a straight rod is movably connected to the upper and lower ends of the connecting plate, one end of the straight rod is fixedly connected to one side of the baffle, and the other end of the straight rod is fixedly connected to the limiting block. A spring is movably connected to the outer wall of the straight rod, one end of the spring is fixedly connected to one side of the connecting plate, and the other end of the spring is fixedly connected to one side of the limiting block.

[0014] The utility model has the following advantages and beneficial effects:

[0015] 1. In the utility model, through the cooperation of the cross-shaped mounting groove, No. 1 motor, No. 1 bidirectional screw rod, No. 1 drive block, No. 1 arc-shaped splint, anti-skid pad, No. 2 motor, No. 2 bidirectional screw rod, No. 2 drive block and No. 2 arc-shaped splint, the inner walls of the two No. 1 arc-shaped splints and the two No. 2 arc-shaped splints are fitted around the outer wall of the circular special-shaped workpiece, which is convenient for quickly clamping and fixing the circular special-shaped workpiece and improving the stability of the special-shaped workpiece when being clamped and fixed. At the same time, the provision of the anti-skid pad facilitates the increase of the anti-skid property between the inner wall of the arc-shaped splint and the workpiece.

[0016] 2. In the utility model, by adopting the coordination of positioning blocks, positioning grooves, iron sheets, magnetic sheets, baffles, straight rods, springs, limit blocks, handles, connecting plates, plug-in rods, No. 1 through-holes, No. 2 through-holes and slots, it is convenient to disassemble and assemble the No. 1 arc splint and the No. 2 arc splint, thereby facilitating and quickly replacing them. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic top view of the overall structure of the utility model.

[0019] Figure 3 It is an enlarged schematic diagram of the structure at point A of the present utility model.

[0020] Icons: 1-clamping table; 2-clamping mechanism; 3-splint disassembly and assembly mechanism; 21-cross-shaped mounting groove; 22-No. 1 motor; 23-No. 1 bidirectional screw rod; 24-No. 1 driving block; 25-No. 1 arc-shaped splint; 251-anti-slip pad; 26-No. 2 motor; 27-No. 2 bidirectional screw rod; 28-No. 2 driving block; 29-No. 2 arc-shaped splint; 31-positioning block; 32-positioning groove; 311-iron sheet; 312-magnetic sheet; 33-baffle; 331-straight rod; 332-spring; 333-limiting block; 34-handle; 35-connecting plate; 36-insertion rod; 37-No. 1 through port; 38-No. 2 through port; 39-slot. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0023] Example 1

[0024] like Figure 1-3As shown, a fixture for clamping special-shaped workpieces includes a clamping platform 1, a clamping mechanism 2 is provided on the top of the clamping platform 1, a cross-shaped mounting groove (21) is provided on the upper end of the clamping platform (1), the clamping mechanism 2 includes a first arc-shaped clamping plate 25 and a second arc-shaped clamping plate 29, the cross-shaped mounting groove 21 is opened on the top of the clamping platform 1, a plurality of driving members are provided in the cross-shaped mounting groove 21, and the plurality of clamping mechanisms 2 can be close to each other to form a ring-shaped clamping body, the driving member includes a first driving block 24 and a second driving block 28, the first driving block 24 is slidably connected to the left and right ends inside the cross-shaped mounting groove 21, There are two No. 1 drive blocks 24, with two No. 1 curved clamping plates 25 overlapping the left and right sides of the top of the clamping platform 1. The middle of the bottom of the two No. 1 curved clamping plates 25 overlaps the top of the two No. 1 drive blocks 24 respectively. The No. 2 drive block 28 is slidably connected to the front and rear ends of the cross-shaped mounting slot 21. There are two No. 2 drive blocks 28, with two No. 2 curved clamping plates 29 overlapping the front and rear sides of the top of the clamping platform 1. The middle of the bottom of the two No. 2 curved clamping plates 29 overlaps the top of the two No. 2 drive blocks 28 respectively. Anti-slip pads 251 are fixedly connected to the inner walls of the No. 1 curved clamping plates 25 and the No. 2 curved clamping plates 29. The tops of the No. 1 drive block 24 and the No. 2 drive block 28 are both provided with a splint disassembly and assembly mechanism 3, which includes a plurality of positioning blocks 31. The bottoms of the plurality of positioning blocks 31 are all fixedly connected to the tops of the No. 1 drive block 24 and the No. 2 drive block 28. The bottoms of the No. 1 arc-shaped splint 25 and the No. 2 arc-shaped splint 29 are both provided with a positioning groove 32, and the outer wall of the positioning block 31 is inserted into the interior of the positioning groove 32. A No. 1 motor 22 is fixedly installed on the left side of the clamping platform 1, and the output end of the No. 1 motor 22 extends to the left end of the inner cavity of the cross-shaped mounting groove 21 and is fixedly connected to the No. 1 bidirectional screw rod 23. The right end of the No. 1 bidirectional screw rod 23 is rotatably connected to the right end inside the cross-shaped mounting groove 21, and the internal symmetrical threads of the two No. 1 drive blocks 24 are connected to the outer wall of the No. 1 bidirectional screw rod 23; a No. 2 motor 26 is fixedly installed on the rear end of the clamping platform 1, and the output end of the No. 2 motor 26 extends to the rear end of the inner cavity of the cross-shaped mounting groove 21 and is fixedly connected to the No. 2 bidirectional screw rod 27. The No. 2 bidirectional screw rod 27 is located below the No. 1 bidirectional screw rod 23, and one end of the No. 2 bidirectional screw rod 27 is rotatably connected to the front end of the inner cavity of the cross-shaped mounting groove 21, and the internal symmetrical threads of the two No. 2 drive blocks 28 are sleeved on the outer wall of the No. 2 bidirectional screw rod 27.

[0025] In this embodiment, through the cooperation of the cross-shaped mounting groove 21, the No. 1 motor 22, the No. 1 bidirectional screw rod 23 and the two No. 1 drive blocks 24, it is convenient to drive the two No. 1 arc-shaped clamps 25 to move relative to each other, so that the two No. 1 arc-shaped clamps 25 can be clamped on the left and right sides of the circular special-shaped workpiece, and through the cooperation of the cross-shaped mounting groove 21, the No. 2 motor 26, the No. 2 bidirectional screw rod 27 and the No. 2 drive block 28, it is convenient to drive the two No. 2 arc-shaped clamps 29 to clamp on the front and back sides of the circular special-shaped workpiece, so that the circular special-shaped workpiece can be quickly fixed and clamped on all sides. At the same time, through the setting of the anti-slip pad 251, it is convenient to increase the anti-slip property between the inner walls of the No. 1 arc-shaped clamp 25 and the No. 2 arc-shaped clamp 29 and the workpiece.

[0026] Example 2

[0027] like Figure 1-3 As shown, one side of the positioning block 31 is provided with two slots 39, the interior of the slots 39 is plugged with an insert rod 36, the top of the positioning block 31 is fixedly inlaid with a magnetic piece 312, the top of the inner cavity of the positioning slot 32 is fixedly inlaid with an iron piece 311, the bottom of the iron piece 311 is magnetically connected to the top of the magnetic piece 312, the No. 1 drive block 24 and the No. 2 drive block 28 are fixedly connected to one side of the top with a baffle 33, a connecting plate 35 is provided on one side of the baffle 33, and a handle 34 is fixedly connected to the middle of one side of the connecting plate 35, and two No. 1 through-holes 37 are provided inside the baffle 33, the No. 1 arc-shaped splint 25 and Two No. 2 openings 38 are provided at the lower part of one side of the No. 2 arc-shaped splint 29. One end of the insertion rod 36 passes through the No. 2 opening 38 and the No. 1 opening 37 and is fixedly connected to the other side of the connecting plate 35. The upper and lower ends inside the connecting plate 35 are movably connected with a straight rod 331. One end of the straight rod 331 is fixedly connected to one side of the baffle 33, and the other end of the straight rod 331 is fixedly connected to the limiting block 333. The outer wall of the straight rod 331 is movably connected with a spring 332. One end of the spring 332 is fixedly connected to one side of the connecting plate 35, and the other end of the spring 332 is fixedly connected to one side of the limiting block 333.

[0028] In this embodiment, the positioning block 31 is inserted into the positioning groove 32, and the iron sheet 311 and the magnetic sheet 312 are magnetically adsorbed together, so that the No. 1 arc splint 25 or the No. 2 arc splint 29 is initially fixed above the No. 1 drive block 24 or the No. 2 drive block 28, and one end of the insertion rod 36 is inserted into the interior of the slot 39 through the No. 1 opening 37 and the No. 2 opening 38, so that the No. 1 arc splint 25 or the No. 2 arc splint 29 is connected to the positioning block 31, and the No. 1 arc splint 25 or the No. 2 arc splint 29 is further fixed.

[0029] In summary, if Figure 1-3As shown, this tooling fixture for clamping special-shaped workpieces, when in use, first place the circular special-shaped workpiece in the middle of the top of the clamping table 1, and then drive the No. 1 bidirectional screw rod 23 to rotate through the output end of the No. 1 motor 22, and the No. 1 bidirectional screw rod 23 drives the two No. 1 driving blocks 24 to slide symmetrically inside the cross-shaped mounting groove 21, and the two No. 1 driving blocks 24 drive the two No. 1 arc clamps 25 to move relative to each other, so that the inner walls of the two No. 1 arc clamps 25 can be clamped on the left and right sides of the circular special-shaped workpiece. At the same time, the No. 2 bidirectional screw rod 27 is driven to rotate by the output end of the No. 2 motor 26, and the No. 2 bidirectional screw rod 27 drives the two No. 2 driving blocks 28 to slide symmetrically inside the cross-shaped mounting groove 21, and the two No. 2 driving blocks 28 drive the two No. 2 arc clamps 29 to move relative to each other, so that the inner walls of the two No. 2 arc clamps 29 can be clamped on the front and back sides of the circular special-shaped workpiece, so as to quickly clamp and fix the four sides of the circular special-shaped workpiece.

[0030] When the first or second curved splint 25 or the second curved splint 29 needs to be replaced, the handle 34 is first used to pull the connecting plate 35, and the connecting plate 35 moves on the outer wall of the straight rod 331 and compresses one end of the spring 332. At the same time, the connecting plate 35 drives the insertion rod 36 to move, so that one end of the insertion rod 36 is removed from the inside of the slot 39, and then the first or second curved splint 25 or the second curved splint 29 is moved upward, and the positioning groove 32 at the bottom of the first or second curved splint 25 or the second curved splint 29 is removed from above the positioning block 31, and the first or second curved splint 25 or the second curved splint 29 can be disassembled and installed. When installing the No. 1 curved splint 25 or the No. 2 curved splint 29, move the insertion rod 36 in the same way, and put the positioning groove 32 at the bottom of the new No. 1 curved splint 25 or the No. 2 curved splint 29 on the outer wall of the positioning block 31, and at the same time make the iron sheet 311 and the magnetic sheet 312 magnetically adsorbed together. At this time, release the handle 34, and use the rebound force of the spring 332 to drive the connecting plate 35 and the insertion rod 36 to move, and insert one end of the insertion rod 36 into the interior of the slot 39, so that the No. 1 curved splint 25 or the No. 2 curved splint 29 can be fixedly installed above the No. 1 drive block 24 or the No. 2 drive block 28.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fixture for clamping a special-shaped workpiece, comprising a clamping platform (1), a clamping mechanism (2) and a clamping plate disassembly mechanism (3), characterized in that: A cross-shaped mounting groove (21) is provided at the upper end of the clamping platform (1), and a plurality of driving members are slidably provided in the cross-shaped mounting groove; a clamping mechanism (2) is provided on the top of the driving member, and the plurality of clamping mechanisms (2) can be brought close to each other to form a ring-shaped clamping body; The clamping plate disassembly and assembly mechanism (3) comprises a plurality of positioning blocks (31), the bottoms of the positioning blocks (31) are fixedly connected to the driving member, and the bottoms of the clamping mechanism (2) are each provided with positioning grooves (32), and the positioning blocks (31) are inserted into the positioning grooves (32).

2. A fixture for clamping special-shaped workpieces according to claim 1, characterized in that: The clamping mechanism comprises a first arc-shaped clamping plate (25) and a second arc-shaped clamping plate (29), wherein the first arc-shaped clamping plate (25) is connected to the driving member and is slidably connected in the cross mounting groove, and the second arc-shaped clamping plate (29) is connected to the driving member and is slidably connected in the cross mounting groove.

3. The fixture for clamping a special-shaped workpiece according to claim 2, characterized in that: The driving member includes a No. 1 driving block (24) and a No. 2 driving block (28), wherein the No. 1 driving block (24) is slidably connected to the left and right ends of the cross-shaped mounting groove (21), and the No. 2 driving block (28) is slidably connected to the front and rear ends of the cross-shaped mounting groove (21), and the middle part of the bottom of the No. 1 arc-shaped clamping plate (25) is overlapped on the top of the No. 1 driving block (24), and the middle part of the bottom of the No. 2 arc-shaped clamping plate (29) is overlapped on the top of the No. 2 driving block (28).

4. The fixture for clamping a special-shaped workpiece according to claim 3, characterized in that: The bottom of the positioning block (31) is fixedly connected to the top of the No. 1 driving block (24) and the No. 2 driving block (28). Two slots (39) are provided on one side of the positioning block (31), and the interior of the slots (39) is plugged with an insertion rod (36).

5. The fixture for clamping a special-shaped workpiece according to claim 4, characterized in that: A No. 1 motor (22) is fixedly mounted on the left side of the clamping table (1), an output end of the No. 1 motor (22) extends to the left end of the inner cavity of the cross-shaped mounting groove (21) and is fixedly connected to a No. 1 bidirectional screw rod (23), a right end of the No. 1 bidirectional screw rod (23) is rotatably connected to the right end inside the cross-shaped mounting groove (21), and an inner symmetrical thread of the No. 1 driving block (24) is connected to the outer wall of the No. 1 bidirectional screw rod (23).

6. The fixture for clamping a special-shaped workpiece according to claim 4, characterized in that: A No. 2 motor (26) is fixedly mounted at the rear end of the clamping table (1), and an output end of the No. 2 motor (26) extends to the rear end of the inner cavity of the cross-shaped mounting groove (21) and is fixedly connected to a No. 2 bidirectional screw rod (27), wherein the No. 2 bidirectional screw rod (27) is located below the No. 1 bidirectional screw rod (23), and one end of the No. 2 bidirectional screw rod (27) is rotatably connected to the front end of the inner cavity of the cross-shaped mounting groove (21), and the inner symmetrical threads of the two No. 2 drive blocks (28) are sleeved on the outer wall of the No. 2 bidirectional screw rod (27).

7. The fixture for clamping a special-shaped workpiece according to claim 4, characterized in that: A magnetic sheet (312) is fixedly embedded on the top of the positioning block (31), an iron sheet (311) is fixedly embedded on the top of the inner cavity of the positioning slot (32), and the bottom of the iron sheet (311) is magnetically connected to the top of the magnetic sheet (312).

8. The fixture for clamping a special-shaped workpiece according to claim 4, characterized in that: A baffle (33) is fixedly connected to one side of the top of the No. 1 driving block (24) and the No. 2 driving block (28), a connecting plate (35) is provided on one side of the baffle (33), and a handle (34) is fixedly connected to the middle of one side of the connecting plate (35). Two No. 1 openings (37) are provided inside the baffle (33), and two No. 2 openings (38) are provided below one side of the No. 1 arc-shaped splint (25) and the No. 2 arc-shaped splint (29), and one end of the insertion rod (36) passes through the No. 2 opening (38) and the No. 1 opening (37) and is fixedly connected to the other side of the connecting plate (35).

9. The fixture for clamping a special-shaped workpiece according to claim 8, characterized in that: A straight rod (331) is movably sleeved at the upper and lower ends of the interior of the connecting plate (35), one end of the straight rod (331) is fixedly connected to one side of the baffle (33), and the other end of the straight rod (331) is fixedly connected to a limit block (333). A spring (332) is movably sleeved on the outer wall of the straight rod (331), one end of the spring (332) is fixedly connected to one side of the connecting plate (35), and the other end of the spring (332) is fixedly connected to one side of the limit block (333).

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