Single-oil-pressure driven self-centering clamping device

Abstract

The utility model relates to clamping device technical field discloses a single oil pressure drive self centering clamping device, including setting up on the clamping seat of switch board, the multiple sliding cavities that are equipped with in the clamping seat along its radial, the upper side of clamping seat is equipped with the communicating groove that communicates sliding cavity, be equipped with the clamping assembly on the clamping seat, and the clamping assembly includes the moving block that is equipped in the sliding cavity, the chamber that is equipped with the upper end opening in moving block, the sliding block that is equipped with in the chamber, be equipped with the clamping plate that projects out through the communicating groove on the sliding block, be equipped with the screw rod that can rotate in the chamber, and the screw rod screw thread penetrates the sliding block setting, and the one end of screw rod penetrates the chamber moving block and projects out, be equipped with the limiting assembly on moving block, and the lower side of clamping seat is equipped with the drive assembly. Through the setting of screw rod, sliding block and clamping plate, make two screw rod rotation can drive corresponding sliding block along the chamber and move, and then make the clamping plate hold the two side walls that long cylindrical part is close to each other, to make long cylindrical part can obtain the better fixation on the clamping seat.

Description

Technical Field

[0001] This utility model relates to the field of clamping device technology, specifically to a single hydraulically driven self-centering clamping device. Background Technology

[0002] A self-centering clamping device is a mechanical device that drives multiple clamping elements to move synchronously, thereby achieving automatic centering and clamping of the workpiece.

[0003] Currently, during parts processing, to prevent parts from moving during the process and affecting the processing results, parts are generally placed on a self-centering clamping device. Multiple clamping plates are driven to move synchronously towards the center of the fixture to fix the parts in place, ensuring that they do not move during processing and guaranteeing processing accuracy and consistency. However, in actual use, this method of clamping by moving multiple clamping plates synchronously towards the center of the fixture has limitations. Since the distance each clamping plate moves is fixed, it can only clamp square or cylindrical parts. When clamping long cylindrical parts, some clamping plates cannot fit against the sidewalls of the long cylindrical parts, resulting in poor fixing effect. Therefore, this method needs improvement. Summary of the Invention

[0004] The purpose of this invention is to provide a single hydraulically driven self-centering clamping device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A single hydraulically driven self-centering clamping device includes a clamping seat mounted on a cabinet. Multiple sliding cavities are arranged radially within the clamping seat. A connecting groove communicating with the sliding cavities is provided on the upper side of the clamping seat. A slidable clamping assembly for clamping parts is provided on the clamping seat. The clamping assembly includes a movable block disposed within the sliding cavity. The movable block has a chamber with an open upper end. A slider is slidably disposed within the chamber. A clamping plate extending through the connecting groove is provided on the slider. A rotatable lead screw is disposed within the chamber along its length. The lead screw is threaded through the slider, and one end of the lead screw extends through the movable block within the chamber. A limiting assembly for limiting the lead screw is provided on the movable block. A driving assembly for driving the movable block to move within the sliding cavity is also provided on the lower side of the clamping seat.

[0007] Furthermore, the lower side of the clamp is provided with a connecting groove that connects to the sliding cavity; the drive assembly includes a drive column provided on the lower side of the moving block, the drive column extending through the connecting groove, and a rotatable rotating disk provided on the lower side of the clamp, the rotating disk having an arc-shaped groove corresponding to the drive column, the drive column extending into the corresponding arc-shaped groove, the rotating disk rotating to drive the moving block to move within the sliding cavity; the cabinet is provided with a power assembly for driving the rotating disk to rotate.

[0008] Furthermore, the cabinet is provided with an installation cavity, and the power assembly includes a rotating shaft on a rotating disk. The lower end of the rotating shaft extends through the cabinet and into the installation cavity. A gear is provided at the end of the rotating shaft extending into the cavity. A rack that meshes with the gear is provided in the installation cavity. The power assembly also includes a hydraulic cylinder installed in the installation cavity. The output end of the hydraulic cylinder is connected to one end of the rack.

[0009] Furthermore, the limiting component includes a mounting plate fixedly disposed on the lower side of the movable block, and a fixed plate is disposed opposite to the side wall of the mounting plate. The limiting component also includes a sliding column slidably disposed between the fixed plates, and an arc-shaped plate is provided at the upper end of the sliding column for abutting the protruding end of the lead screw. An abutting piece is sleeved on the sliding column located between the fixed plates, and a spring is also sleeved on the sliding column located between the fixed plates. The spring is used to push the abutting piece to drive the sliding column to drive the arc-shaped plate to move upward to abut the protruding end of the lead screw.

[0010] Furthermore, the lower side of the clamping plate is provided with a threaded post, and the upper end of the slider is provided with a threaded hole for the threaded post to be threaded into. The threaded hole into which the threaded post is inserted is used to install the clamping plate on the slider.

[0011] Furthermore, the clamping plate consists of a clamping block and an L-shaped abutment plate. Threaded posts are fixedly installed on the lower side of the clamping block, and corresponding locking posts are provided on the lower side of the abutment plate. The upper side of the clamping block is provided with locking holes for the corresponding locking posts to be engaged.

[0012] Furthermore, an opening is provided on one side of the mounting cavity, and a cabinet door is hinged at the opening position.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, through the arrangement of lead screws, sliders and clamping plates, enables the rotation of two lead screws to drive the corresponding sliders to move along the cavity toward the center position of the clamping seat, thereby enabling the sliders to drive the clamping plates to clamp the two side walls of the long cylindrical part that are close to each other, so that the long cylindrical part can be better fixed on the clamping seat.

[0015] This invention, through the setting of the limiting component, enables the limiting component to always limit the extended end of the lead screw, thereby better preventing the lead screw from vibrating and causing accidental rotation during the processing of the part, and releasing the clamping plate from the part. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a single hydraulically driven self-centering clamping device according to the present invention.

[0017] Figure 2This is a schematic diagram showing the position and structure of the clamping plate on the clamping seat in this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the drive component on the clamp in this utility model.

[0019] Figure 4 This is an exploded structural diagram of the clamping component and the driving component in this utility model.

[0020] Figure 5 This is an exploded structural diagram of the clamping plate in this utility model.

[0021] Figure 6 This is a schematic diagram of the limiting component in this utility model.

[0022] Figure 7 This is a schematic diagram of the installation structure of the power component in the mounting cavity in this utility model.

[0023] The labels in the diagram represent the following: 100, cabinet; 104, clamp; 105, clamp plate; 106, mounting post.

[0024] 200. Sliding cavity; 201. Moving block; 202. Drive column; 203. Fixed plate; 204. Spring;

[0025] 300. Tie rod; 301. Mounting plate; 302. Connecting groove; 303. Rotating disk; 304. Arc groove; 305. Rotating shaft; 306. Gear;

[0026] 500, Abutment plate; 501, Locking post; 502, Mounting hole; 503, Locking hole; 504, Threaded hole; 505, Slider;

[0027] 600. Sliding column; 601. Arc-shaped plate; 602. Abutment piece;

[0028] 700, mounting cavity; 701, hydraulic cylinder; 702, rack; 703, heat dissipation slot. Detailed Implementation

[0029] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative of this utility model and are not intended to limit it.

[0030] The following is in conjunction with the appendix Figures 1-7 This embodiment will be described in further detail.

[0031] Combined with appendix Figures 1-7This embodiment of a single hydraulically driven self-centering clamping device includes a clamping seat 104 mounted on a cabinet 100. Multiple sliding cavities 200 are radially arranged within the clamping seat 104. A communicating groove connecting the sliding cavities 200 is provided on the upper side of the clamping seat 104. A slidable clamping assembly for clamping parts is provided on the clamping seat 104. The clamping assembly includes a movable block 201 disposed within the sliding cavities 200. The movable block 201 has a chamber with an upper opening. A slider 505 is slidably disposed within the chamber. A clamping plate 105 extending through the communicating groove is provided on the slider 505. A rotatable lead screw is disposed within the chamber along its length. The lead screw is threaded through the slider 505, and one end of the lead screw extends through the movable block 201 within the chamber. A limiting assembly for limiting the lead screw is provided on the movable block 201. A driving assembly for driving the movable block 201 to move within the sliding cavities 200 is also provided on the lower side of the clamping seat 104.

[0032] In practical use, when it is necessary to fix a square or cylindrical part, the part is placed on the clamp 104. The driving component drives multiple moving blocks 201 to move toward the center of the clamp 104. The moving blocks 201 can drive the slider 505 to drive the clamping plate 105 to move toward the center of the clamp 104, so that the clamping plate 105 can clamp the part and fix the part on the clamp 104, so that the part is centered and clamped on the clamp 104.

[0033] In actual use, when it is necessary to center and clamp a long cylindrical part, the part is first placed on the clamping base 104. Multiple moving blocks 201 are driven to move toward the center of the clamping base 104 in a synchronous manner. This allows the moving blocks 201 to drive the sliders 505 to drive the clamping plates 105 to move toward the center of the clamping base 104, so that the long side end walls of the long cylindrical part can be clamped first. At this time, the drive assembly stops driving the moving blocks 201 to move. Then, the lead screws on the short side of the long cylindrical part are rotated, so that the rotation of the two lead screws can drive the corresponding sliders 505 to move along the cavity toward the center of the clamping base 104. This allows the sliders 505 to drive the clamping plates 105 to clamp the two sides of the long cylindrical part, so that the long cylindrical part can be better fixed on the clamping base 104.

[0034] The limiting component is fixedly installed on the lower side of the moving block 201, so that the limiting component can move with the moving block 201, so that the limiting component can always limit the protruding end of the lead screw, thereby better avoiding the vibration of the lead screw during the processing of the part, which would cause it to rotate incorrectly and affect its clamping of the part.

[0035] The two ends of the lead screw are rotatably mounted on the corresponding side wall of the chamber via bearings, thereby enabling the lead screw to be rotatably mounted inside the chamber.

[0036] Specifically, the sidewall of slider 505 slides against the corresponding sidewall of the chamber, thereby limiting the position of slider 505 within the chamber, so that the rotation of the lead screw can drive slider 505 to move along the chamber.

[0037] Combination Figure 5 As shown, in this embodiment, the lower side of the clamping plate 105 is provided with a threaded post, and the upper end of the slider 505 is provided with a threaded hole 504 for the threaded post to be threaded into. The threaded post is inserted into the threaded hole 504, so that the clamping plate 105 can be installed on the slider 505.

[0038] In actual use, the setting of threaded post and threaded hole 504 allows the clamping plate 105 to be disassembled and assembled. When it is necessary to clamp cylindrical parts, the square clamping plate 105 can be removed and replaced with an arc-shaped clamping plate 105, so that parts of different shapes can be better clamped on the clamping seat 104.

[0039] Specifically, the square clamping plate 105 is composed of multiple clamping blocks and an L-shaped abutment plate 500. Threaded posts are fixedly installed on the lower side of the clamping blocks. The lower side of the abutment plate 500 is provided with corresponding locking posts 501, and the upper side of the clamping blocks is provided with corresponding locking holes 503 for the locking posts 501 to be engaged. The locking posts 501 are interference-fitted into the locking holes 503, so that the abutment plate 500 can be installed on the clamping blocks. Through the setting of the abutment plate 500, one side wall of the abutment plate 500 can abut against the upper side of the square part, thereby making the part better fixed.

[0040] The clamping block has an installation hole 502 on its upper side between the two locking holes 503 for the threaded column to be threaded into. The installation hole 502 allows the operator to splice multiple clamping blocks according to the height of the square part, so that the abutment plate 500 can abut against the upper side of square parts of different heights.

[0041] Combination Figures 2-4As shown, in this embodiment, the lower side of the clamp 104 is provided with a connecting groove 302 that communicates with the sliding cavity 200; the driving assembly includes a driving column 202 provided on the lower side of the moving block 201, the driving column 202 extends through the connecting groove 302, and the lower side of the clamp 104 is also provided with a rotatable rotating disk 303, the rotating disk 303 is provided with an arc-shaped groove 304 corresponding to the driving column 202, the driving column 202 extends into the corresponding arc-shaped groove 304, and the rotation of the rotating disk 303 is used to drive the driving column 202 to drive the moving block 201 to move in the sliding cavity 200; the cabinet 100 is provided with a power assembly for driving the rotating disk 303 to rotate.

[0042] In actual use, the power component drives the rotating disk 303 to rotate the arc groove 304, thereby enabling the side wall corresponding to the arc groove 304 to slide and press the drive column 202, so that the drive column 202 can move along the arc groove 304, thereby enabling the drive column 202 to drive the moving block 201 to move within the sliding cavity 200.

[0043] In actual use, the sliding cavity 200, the connecting groove and the connecting groove 302 are open at one end, and the opening is located on the outer peripheral side wall of the clamp 104, so that the moving block 201, the clamping plate 105 and the driving column 202 can be slidably installed.

[0044] The rotating disk 303 is rotatably mounted on the lower side of the clamp 104 via a bearing, so that the rotating disk 303 can be rotatably mounted on the clamp 104.

[0045] In order to enable the rotating disk 303 to rotate more effectively, in this embodiment, a plurality of mounting posts 106 are evenly provided on the lower side of the clamp 104. The clamp 104 is fixedly installed on the upper end of the mounting posts 106, and the lower end of the mounting posts 106 is fixedly installed on the upper side of the cabinet 100, so that the clamp 104 can be fixedly installed on the cabinet 100. Specifically, the mounting posts 106 have a height so that the lower side of the rotating disk 303 can be away from the upper side of the cabinet 100, thereby enabling the rotating disk 303 to rotate more effectively.

[0046] Combination Figures 3-7 As shown, in this embodiment, the cabinet 100 is provided with a mounting cavity 700. The power assembly includes a rotating shaft 305 mounted on a rotating disk 303. The lower end of the rotating shaft 305 extends through the cabinet 100 and into the mounting cavity 700. A gear 306 is provided at the end of the rotating shaft 305 extending into the mounting cavity. A rack 702 that meshes with the gear 306 is provided in the mounting cavity 700. The power assembly also includes a hydraulic cylinder 701 mounted in the mounting cavity 700. The output end of the hydraulic cylinder 701 is connected to one end of the rack 702.

[0047] In actual use, the upper end of the rotating shaft 305 is fixedly installed on the lower side of the rotating disk 303, and the gear 306 is fixedly installed on the lower end of the rotating shaft 305. The rack 702 is driven to move in the mounting cavity 700 by a single hydraulic cylinder 701, thereby driving the gear 306 to rotate, which in turn drives the rotating shaft 305 to drive the rotating disk 303 to rotate.

[0048] In actual use, the mounting cavity 700 has an opening on one side, and a cabinet door is hinged at the opening position, so that the components inside the mounting cavity 700 can be installed; the side wall of the mounting cavity 700 is provided with a heat dissipation slot 703 that connects to the outside.

[0049] Combination Figures 2-6 As shown, in this embodiment, the limiting component includes a mounting plate 301 fixedly disposed on the lower side of the moving block 201. A fixed plate 203 is disposed opposite to the side wall of the mounting plate 301. The limiting component also includes a sliding column 600 slidably disposed between the fixed plates 203. An arc-shaped plate 601 for abutting the protruding end of the lead screw is provided at the upper end of the sliding column 600. An abutting piece 602 is sleeved on the sliding column 600 located between the fixed plates 203. A spring 204 is also sleeved on the sliding column 600 located between the fixed plates 203. The spring 204 is used to push the abutting piece 602 to drive the sliding column 600 to drive the arc-shaped plate 601 to move upward to abut the protruding end of the lead screw.

[0050] In actual use, the arc-shaped plate 601 is fixedly installed at the upper end of the sliding column 600. In the initial state, the upper end of the spring 204 abuts against the abutment piece 602, and the lower end abuts against one of the two fixed plates 203, so that the spring 204 can always push the abutment piece 602 to drive the sliding column 600 to move upward, thereby allowing the sliding column 600 to drive the arc-shaped plate 601 to move upward and abut against the outer wall of the extended part of the lead screw. A rubber pad is provided on the inner wall of the arc-shaped plate 601. By setting the rubber pad, the friction between the arc-shaped plate 601 and the lead screw can be increased, thereby better preventing the lead screw from rotating erroneously.

[0051] In actual use, the lower end of the sliding column 600 extends through a fixed plate 203, and a pull rod 300 is provided at the end of the extended end. When it is necessary to rotate the lead screw, the corresponding pull rod 300 is pulled down, so that the pull rod 300 can drive the sliding column 600 to drive the abutment piece 602 to move downward and compress the spring 204, so that the sliding column 600 can drive the arc plate 601 to move downward and release the limit on the lead screw, thus making it easier for the operator to rotate the lead screw. When the slider 505 slides to the appropriate position, the pull rod 300 is released, so that under the action of the spring 204, the spring 204 can drive the arc plate 601 to reset, so that the arc plate 601 can continue to limit the lead screw.

[0052] Both ends of the spring 204 are equipped with rubber pads. The rubber pads can effectively prevent the spring 204 from moving on the sliding column 600, thereby affecting its limit on the lead screw.

[0053] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. A single hydraulically driven self-centering clamping device, comprising a clamp (104) disposed on a cabinet (100), characterized in that: The clamp (104) has multiple sliding cavities (200) arranged radially inside. The upper side of the clamp (104) has a connecting groove that connects to the sliding cavities (200). The clamp (104) has a slidable clamping assembly for clamping parts. The clamping assembly includes a moving block (201) located in the sliding cavity (200). The moving block (201) has a chamber with an open top. A slider (505) is slidably arranged in the chamber. A clamping plate (105) extends through the connecting groove on the slider (505). A rotatable lead screw is arranged in the chamber along its length. The lead screw is threaded through the slider (505). One end of the lead screw extends through the moving block (201) of the chamber. A limiting assembly is provided on the moving block (201) for limiting the lead screw. The lower side of the clamp (104) also has a driving assembly for driving the moving block (201) to move in the sliding cavity (200).

2. A single-oil-pressure actuated self-centering clamping device according to claim 1, characterized in that: The lower side of the clamp (104) is provided with a connecting groove (302) that connects to the sliding cavity (200); the drive assembly includes a drive column (202) provided on the lower side of the moving block (201), the drive column (202) extends through the connecting groove (302), the lower side of the clamp (104) is also provided with a rotatable rotating disk (303), the rotating disk (303) is provided with an arc groove (304) corresponding to the drive column (202), the drive column (202) extends into the corresponding arc groove (304), the rotating disk (303) rotates to drive the moving block (201) to move in the sliding cavity (200) by the drive column (202); the cabinet (100) is provided with a power assembly for driving the rotating disk (303) to rotate.

3. A single-oil-pressure actuated self-centering clamping device according to claim 2, characterized in that: The cabinet (100) is provided with a mounting cavity (700). The power assembly includes a rotating shaft (305) on a rotating disk (303). The lower end of the rotating shaft (305) extends through the cabinet (100) and into the mounting cavity (700). A gear (306) is provided at the end of the rotating shaft (305) that extends into the mounting cavity. A rack (702) that meshes with the gear (306) is provided in the mounting cavity (700). The power assembly also includes a hydraulic cylinder (701) installed in the mounting cavity (700). The output end of the hydraulic cylinder (701) is connected to one end of the rack (702).

4. A single-oil-pressure actuated self-centering clamping device according to claim 1, characterized in that: The limiting component includes a mounting plate (301) fixedly mounted on the lower side of the movable block (201), and a fixed plate (203) is provided opposite to the side wall of the mounting plate (301). The limiting component also includes a sliding column (600) slidably disposed between the fixed plates (203). An arc-shaped plate (601) for abutting the protruding end of the lead screw is provided at the upper end of the sliding column (600). An abutting piece (602) is sleeved on the sliding column (600) located between the fixed plates (203). A spring (204) is also sleeved on the sliding column (600) located between the fixed plates (203). The spring (204) is used to push the abutting piece (602) to drive the sliding column (600) to drive the arc-shaped plate (601) to move upward to abut the protruding end of the lead screw.

5. A single-oil-pressure actuated self-centering clamping device according to claim 1, characterized in that: The lower side of the clamping plate (105) is provided with a threaded post, and the upper end of the slider (505) is provided with a threaded hole (504) for the threaded post to be threaded into. The threaded hole (504) into which the threaded post is threaded is used to realize the installation of the clamping plate (105) on the slider (505).

6. A single-oil-pressure actuated self-centering clamping device according to claim 5, characterized in that: The clamping plate (105) consists of a clamping block and an L-shaped abutment plate (500). A threaded post is fixedly installed on the lower side of the clamping block. A locking post (501) is provided on the lower side of the abutment plate (500), and a locking hole (503) is provided on the upper side of the clamping block for the corresponding locking post (501) to be inserted.

7. A single-oil-pressure actuated self-centering clamping device according to claim 3, characterized in that: The mounting cavity (700) has an opening on one side, and a cabinet door is hinged at the opening.

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