A clamping device

Abstract

The invention discloses a clamping device, which relates to the technical field of workpiece clamping, including a fixing plate and a column, wherein the fixing plate and the column are fixedly connected, an electromagnetic suction cup is arranged below the fixing plate, a clamping tooling mounting plate is arranged on the electromagnetic suction cup, a clamping base plate is arranged above the fixing plate, a clamping assembly is arranged on the clamping base plate, a circular hole is arranged on the fixing plate, a movable column is arranged in the circular hole, the movement of the cylinder telescopic plate is controlled by cylinder ventilation and air cut-off, thereby driving the inclined slide block to reciprocate, and then realizing the opening and closing of the left clamping plate and the right clamping plate, so as to reduce the impact on the workpiece during the clamping process and avoid deformation of the workpiece during the workpiece clamping process, and the entire clamping assembly can slide freely in the xy plane on the electromagnetic suction cup by controlling the electromagnetic suction cup, so that the position of the clamping assembly can change with the workpiece, thereby effectively improving the clamping accuracy and work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of workpiece clamping, in particular to a clamping device. Background Art

[0002] In the processing of precision parts, it is first necessary to use a tooling fixture to position and clamp the product. Traditionally, clamping tools such as clamps are generally used for clamping. However, some workpieces have hollow structures or their side walls are relatively thin. If traditional clamps are used for clamping, if the clamping force is too large, it is easy to cause deformation of the workpiece. If the clamping force is too small, it will cause the workpiece to loosen, affecting the processing accuracy during the processing. Therefore, a device that can solve the above problems is now needed. Summary of the invention

[0003] In view of the deficiencies of the prior art, the present invention provides a clamping device which solves the problem of clamping accuracy of the prior device.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a clamping device, including a fixed plate and a column, the fixed plate and the column are fixedly connected, an electromagnetic suction cup is provided under the fixed plate, a clamping tool mounting plate is provided on the electromagnetic suction cup, a clamping base plate is provided above the fixed plate, a clamping assembly is provided on the clamping base plate, a circular hole is provided on the fixed plate, a movable column is provided in the circular hole, the movable column passes through the circular hole and is fixed between the clamping tool mounting plate and the clamping base plate.

[0005] Preferably, the clamping assembly comprises a transfer plate and a spring guide seat, the transfer plate and the spring guide seat are both fixed on the clamping base plate, a spring guide rod is provided between the spring guide seat and the transfer plate, one end of the spring guide rod is sleeved with a cylinder telescopic plate, the cylinder telescopic plate is penetrated by a guide sleeve, the other end of the spring guide rod is sleeved with an adjusting plate, the spring guide rod penetrates between the guide sleeve and the adjusting plate, the cylinder telescopic plate and the adjusting plate are provided with springs and sleeved on the spring guide rod, a cylinder mounting plate is provided on the clamping base plate, the cylinder mounting plate is located between the cylinder telescopic plate and the adjusting plate, a cylinder is fixedly installed on the cylinder mounting plate, the cylinder driving end is connected with a telescopic rod, the telescopic rod is connected with the cylinder telescopic plate, a left clamping plate is provided on one side of the clamping base plate, a guide rod support seat is provided on the other side of the clamping base plate, a guide rod is fixedly connected between the left clamping plate and the guide rod support seat, a right clamping plate is slidably connected to the guide rod, and a guide mechanism is provided in the right clamping plate.

[0006] Preferably, an inclined sliding groove is provided in the guide mechanism, a groove is provided on the spring guide seat, the inclined sliding groove is slidably connected with an inclined sliding block, and the inclined sliding block is fixed to the cylinder telescopic plate and passes through the groove.

[0007] Preferably, a displacement sensor bracket is fixedly mounted on one side of the fixing frame, and an HLV displacement sensor is provided on the displacement sensor bracket.

[0008] Preferably, aluminum block pads are provided on the left clamping plate and the right clamping plate.

[0009] Preferably, the transfer plate is provided with a through hole, the through hole is provided with an internal thread, the through hole is screwed with an adjusting screw, the surface of the adjusting screw is provided with an external thread, one end of the adjusting screw is fixedly connected to the adjusting plate, and the other end of the adjusting screw is provided with a handle.

[0010] Preferably, a ball plunger is provided on the fixing plate, and the ball end of the ball plunger is in contact with the tooling mounting plate.

[0011] Preferably, a vent hole is provided on the side wall of the clamping fixture mounting plate, and an air outlet hole is provided in the center of the clamping fixture mounting plate with the opening facing downward. Beneficial Effects

[0012] The present invention provides a clamping device with the following beneficial effects: the present invention has a simple structure and is easy to use. The stroke can be adjusted at will by adjusting the spring to clamp the workpiece. The movement of the cylinder telescopic plate is controlled by the cylinder ventilation and air cut-off to drive the inclined slider to reciprocate, thereby realizing the opening and closing of the left clamping plate and the right clamping plate, so as to reduce the impact on the workpiece during the clamping process and avoid deformation of the workpiece during the clamping process. By controlling the electromagnetic suction cup, the entire clamping assembly can slide freely in the xy plane on the electromagnetic suction cup, so the position of the clamping assembly can change with the workpiece, thereby effectively improving the clamping accuracy and work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention.

[0014] Figure 2 It is a cross-sectional view of the present invention.

[0015] Figure 3 It is a top view of the present invention.

[0016] Figure 4 for Figure 3 A partial enlarged view.

[0017] Figure 5 It is a cross-sectional view of the present invention.

[0018] Figure 6It is a structural schematic diagram of the clamping tool installation plate of the present invention.

[0019] Figure 7 It is a structural schematic diagram of the fixing plate of the present invention.

[0020] In the figure: 1. fixed plate; 2. column; 3. electromagnetic suction cup; 4. clamping tool installation plate; 5. clamping bottom plate; 6. round hole; 7. movable column; 8. transfer plate; 9. spring guide seat; 10. spring guide rod; 11. cylinder telescopic plate; 12. guide sleeve; 13. adjustment plate; 14. spring; 15. cylinder mounting plate; 16. cylinder; 17. telescopic rod; 18. left clamping plate; 19. guide rod support seat; 20. guide rod; 21. right clamping plate; 22. inclined slide groove; 23. groove; 24. inclined slide block; 25. displacement sensor bracket; 26. HLV displacement sensor; 27. aluminum block; 28. adjusting screw; 29. ​​handle; 30. ball plunger; 31. vent; 32. air outlet. Implementation

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-7The present invention provides a technical solution: a clamping device, including a fixed plate 1 and a column 2, wherein the fixed plate 1 and the column 2 are fixedly connected, an electromagnetic suction cup 3 is provided below the fixed plate 1, a clamping tool installation plate 4 is provided on the electromagnetic suction cup 3, a clamping base plate 5 is provided above the fixed plate 1, a clamping assembly is provided on the clamping base plate 5, a circular hole 6 is provided on the fixed plate 1, a movable column 2 is provided in the circular hole 6, the movable column 2 passes through the circular hole 6 and is fixed between the clamping tool installation plate 4 and the clamping base plate 5; the clamping assembly includes a transfer plate 8 and a spring guide seat 9, the transfer plate 8 and the spring guide seat 9 are both fixed on the clamping base plate 5, the spring A spring guide rod 10 is provided between the guide seat 9 and the transfer plate 8, one end of the spring guide rod 10 is sleeved with a cylinder telescopic plate 11, a guide sleeve 12 is passed through the cylinder telescopic plate 11, and an adjustment plate 13 is sleeved on the other end of the spring guide rod 10, the spring guide rod 10 passes through the guide sleeve 12 and the adjustment plate 13, the cylinder telescopic plate 11 and the adjustment plate 13 are provided with springs 14 and sleeved on the spring guide rod 10, a cylinder 16 mounting plate 15 is provided on the clamping base plate 5, the cylinder mounting plate 15 is located between the cylinder telescopic plate 11 and the adjustment plate 13, a cylinder 16 is fixedly mounted on the cylinder mounting plate 15, and the drive end of the cylinder 16 is connected to the cylinder 16. A telescopic rod 17 is connected, and the telescopic rod 17 is connected to the cylinder telescopic plate 11. A left clamping plate 18 is provided on one side of the clamping base plate 5, and a guide rod support seat 19 is provided on the other side of the clamping base plate 5. A guide rod 20 is fixedly connected between the left clamping plate 18 and the guide rod support seat 19. A right clamping plate 21 is slidably connected to the guide rod 20, and a guide mechanism is provided in the right clamping plate 21; an inclined slide groove 22 is provided in the guide mechanism, and a groove 23 is provided on the spring guide seat 9. An inclined slide block 24 is slidably connected to the inclined slide groove 22, and the inclined slide block 24 is fixed to the cylinder telescopic plate 11 and passes through the groove 23; a displacement sensor support is fixedly installed on one side of the fixing frame The bracket 25 has an HLV displacement sensor 26 disposed on it; the left clamping plate 18 and the right clamping plate 21 have aluminum blocks 27 as pads; the transfer plate 8 has a through hole, the through hole has an internal thread, an adjusting screw 28 is screwed onto the through hole, the surface of the adjusting screw 28 has an external thread, one end of the adjusting screw 28 is fixedly connected to the adjusting plate 13, and the other end of the adjusting screw 28 has a handle 29; the fixing plate 1 has a ball plunger 30, the ball end of the ball plunger 30 is in contact with the tooling mounting plate; the side wall of the clamping tooling mounting plate 4 has an air vent 31, and the center of the clamping tooling mounting plate 4 has an air outlet 32 ​​with the opening facing downward.

[0023] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the field. The following mainly introduces the working principle and process.

[0024] Embodiment: When in use, first, by rotating the handle 29, the adjusting screw 28 drives the adjusting plate 13 to slide on the spring guide rod 10, so as to realize the arbitrary adjustment of the appropriate stroke for easy use, and the adjusting plate 13 squeezes the spring 14 to produce compression deformation so that the spring 14 squeezes the cylinder telescopic plate 11, and the cylinder 16 telescopic plate 11 drives the inclined slide block 24 to extend forward, thereby driving the right clamping plate 21 to slide, and the clamping opening is in a closed state at this time, and the aluminum block 27 pad is provided on the left clamping plate 18 and the right clamping plate 21 to prevent the clamping assembly from causing damage to the workpiece. Secondly, before clamping the workpiece, when the cylinder 16 is passed, the clamping plate 11 is pressed against the cylinder 16, and the cylinder 16 is pressed against the cylinder 16. When the air is inflated, the cylinder 16 retracts and drives the cylinder telescopic plate 11 to move, so that the spring 14 is compressed, so that the cylinder telescopic plate 11 drives the inclined slider 24 to retract backward, and then drives the right clamping plate 21 to slide. At this time, the left clamping plate 18 and the right clamping plate 21 are in an open state. When the electromagnetic suction cup 3 is in a released state, the moving column 72 is moved around the circular hole 6 by controlling the magnetic force of the electromagnetic suction cup 3 so that the entire clamping assembly can slide freely in the xy plane on the electromagnetic suction cup 3, and the sliding range is ±25mm. Since a ball plunger 30 is embedded in the fixed plate 1, and the ball end of the ball plunger 30 is in contact with the tooling mounting plate , so the clamping assembly can slide smoothly on the electromagnetic suction cup 3 and avoid unilateral warping. When clamping the workpiece, ventilation is carried out in the vent hole 31 of the clamping fixture mounting plate 4 to allow the gas to flow out from the outlet. Therefore, a small gap is generated between the clamping fixture mounting plate 4 and the electromagnetic suction cup 31, so that the clamping assembly can slide freely. When the cylinder 16 is de-energized, the cylinder telescopic rod 17 is in a free state, and the cylinder telescopic plate 11 is driven to move through the spring expansion and contraction, so that the cylinder telescopic plate 11 drives the inclined slider 24 to extend forward, and then drives the right clamping plate 21 to slide. At this time, the clamping opening is closed to clamp the workpiece. The parts can slide freely on the fixed plate 1, so the position of the clamping assembly can change with the workpiece, and the clamping force is provided by the spring 14 to reduce the impact on the workpiece. After the workpiece is clamped, the air vent 31 of the clamping fixture mounting plate 4 is cut off, and the electromagnetic suction cup 3 is energized and the clamping fixture mounting plate 4 is sucked and fixed, so that the workpiece is clamped. The position of the workpiece before clamping is first measured by the HLV displacement sensor 26, and then the position of the workpiece when the electromagnetic suction cup 3 is not sucked after clamping and the position of the workpiece when the electromagnetic suction cup 3 is sucked are measured. After comparison, it is observed whether the workpiece is deformed due to clamping, thereby improving the clamping accuracy.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clamping device, comprising a fixing plate (1) and a column (2), wherein the fixing plate (1) and the column (2) are fixedly connected, characterized in that: An electromagnetic suction cup (3) is provided below the fixed plate (1), a clamping tool installation plate (4) is provided on the electromagnetic suction cup (3), a clamping base plate (5) is provided above the fixed plate (1), a clamping assembly is provided on the clamping base plate (5), a circular hole (6) is provided on the fixed plate (1), a movable column (7) is provided in the circular hole (6), and the movable column (7) passes through the circular hole (6) and is fixed between the clamping tool installation plate (4) and the clamping base plate (5).

2. A clamping device according to claim 1, characterized in that: The clamping assembly comprises a transfer plate (8) and a spring guide seat (9), the transfer plate (8) and the spring guide seat (9) are both fixed on the clamping base plate (5), a spring guide rod (10) is provided between the spring guide seat (9) and the transfer plate (8), one end of the spring guide rod (10) is sleeved with a cylinder telescopic plate (11), a guide sleeve (12) passes through the cylinder telescopic plate (11), the other end of the spring guide rod (10) is sleeved with an adjustment plate (13), the spring guide rod (10) passes between the guide sleeve (12) and the adjustment plate (13), the cylinder (16) telescopic plate (11) and the adjustment plate (13) are provided with a spring (14) and sleeved on the spring guide rod (10), the A cylinder mounting plate (15) is provided on the clamping base plate (5), and the cylinder mounting plate (15) is located between the cylinder telescopic plate (11) and the adjusting plate (13). A cylinder (16) is fixedly mounted on the cylinder mounting plate (15), and a telescopic rod (17) is connected to the driving end of the cylinder (16), and the telescopic rod (17) is connected to the cylinder telescopic plate (11). A left clamping plate (18) is provided on one side of the clamping base plate (5), and a guide rod support seat (19) is provided on the other side of the clamping base plate (5). A guide rod (20) is fixedly connected between the left clamping plate (18) and the guide rod support seat (19), and a right clamping plate (21) is slidably connected to the guide rod (20), and a guide mechanism is provided in the right clamping plate (21).

3. A clamping device according to claim 2, characterized in that: The guide mechanism is provided with an inclined sliding groove (22), the spring guide seat (9) is provided with a groove (23), the inclined sliding groove (22) is slidably connected with an inclined sliding block (24), and the inclined sliding block (24) is fixed to the telescopic plate (11) of the cylinder (16) and penetrates the groove (23).

4. A clamping device according to claim 1, characterized in that: A displacement sensor bracket (25) is fixedly mounted on one side of the fixing frame, and an HLV displacement sensor (26) is provided on the displacement sensor bracket (25).

5. A clamping device according to claim 2, characterized in that: Aluminum blocks (27) are provided on the left clamping plate (18) and the right clamping plate (21).

6. A clamping device according to claim 2, characterized in that: The transfer plate (8) is provided with a through hole, the through hole is provided with an internal thread, an adjusting screw (28) is screwed to the through hole, the surface of the adjusting screw (28) is provided with an external thread, one end of the adjusting screw (28) is fixedly connected to the adjusting plate (13), and the other end of the adjusting screw (28) is provided with a handle (29).

7. A clamping device according to claim 1, characterized in that: A ball plunger (30) is provided on the fixing plate (1), and a ball end of the ball plunger (30) is in contact with the tooling mounting plate.

8. A clamping device according to claim 1, characterized in that: A vent hole (31) is provided on the side wall of the clamping fixture installation plate (4), and an air outlet hole (32) is provided in the center of the clamping fixture installation plate (4) and opens downward.

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