A dual piston adaptive clamp

Abstract

The utility model relates to the technical field of tongs device, propose a kind of double-piston self-adapting tongs device, including cylinder body, the cylinder body inside has accommodating cavity, the both ends of cylinder body are respectively towards accommodating cavity and are opened with accommodating cavity communication drive hole, the accommodating cavity inside has two with accommodating cavity inner diameter matching drive piston, the piston rod of two drive pistons is respectively inserted into two drive holes and with drive hole slidably connected, and the piston rod is inserted into drive hole and is fixed with locking plate, the lateral wall of accommodating cavity and drive hole is respectively connected with first liquid inlet hole and second liquid inlet hole.The utility model has the beneficial effects that: the adjustment of two locking plates distance is realized by two drive pistons, so that two locking plates can realize clamping function, simple structure, lower in use cost, and clamping effect is stable.

Description

Technical Field

[0001] This utility model relates to the technical field of clamps, specifically to a dual-piston adaptive clamp. Background Technology

[0002] During machining, the gantry needs to move along the slide rails on both sides of the machine tool. The bottom of the gantry is mounted on slide blocks on both sides of the machine tool, which slide on the slide rails, allowing the gantry to move horizontally. When the gantry moves to the machining position, it needs to remain stationary. Due to the low friction between the slide block and the slide rail, wobbling and displacement are likely to occur, affecting machining accuracy. Existing technology uses slide rail clamps mounted on the slide blocks to clamp the slide rails, thus positioning the slide and gantry. However, because the object being clamped is the slide rail, high clamping precision is required, resulting in a complex structure and high cost. Furthermore, due to the structural characteristics of the slide rail, the clamping area of ​​the clamp is relatively small, which can lead to insufficient clamping force and may also damage the surface of the slide rail, affecting its sliding friction. Utility Model Content

[0003] This invention proposes a dual-piston adaptive clamping device, which can adjust the distance between two locking plates through two driving pistons, thereby enabling the two locking plates to perform a clamping function. It has a simple structure, low operating cost, and stable clamping effect.

[0004] Therefore, the technical solution adopted is as follows:

[0005] A dual-piston adaptive clamp includes a cylinder body with a receiving cavity inside. Both ends of the cylinder body have a drive hole communicating with the receiving cavity. The receiving cavity has two drive pistons that match the inner diameter of the receiving cavity. The piston rods of the two drive pistons pass through the two drive holes and are slidably connected to the drive holes. The piston rods also pass through the drive holes and are fixed with locking plates. The side walls of the receiving cavity and the drive holes are respectively connected to a first liquid inlet and a second liquid inlet.

[0006] A further technical solution is that a matching slide rail is slidably connected to a slide block, the slide rail is fixed to a frame, and a locking component is also fixed to the frame. The locking component can slide with the slide block and be positioned between two locking plates.

[0007] A further technical solution is that threaded holes are provided on the end faces of the two piston rods that protrude from the cylinder body, and a receiving groove matching the piston rod is provided on the locking plate. The end of the piston rod is inserted into the receiving groove, and a locking hole coaxial with the threaded hole is provided on the inner wall of the receiving groove. A locking bolt is inserted into the locking hole, and the locking bolt is threadedly matched with the threaded hole and finally inserted into the threaded hole.

[0008] A further technical solution is that the two locking plates are parallel to each other, and the locking plates include connecting parts and clamping parts. The two connecting parts are fixed to the corresponding piston rods respectively, and the two clamping parts have clamping notches on their opposite sides.

[0009] A further technical solution is that a positioning hole is provided on the side wall of the locking plate facing the piston rod, and a positioning rod that presses the piston rod together is inserted through the positioning hole.

[0010] The working principle and beneficial effects of this application are as follows:

[0011] 1. The distance between the two locking plates is adjusted by two driving pistons, thereby enabling the two locking plates to perform a clamping function. The structure is simple, the operating cost is low, and the clamping effect is stable.

[0012] 2. The two drive pistons work independently, so even if the surface of the product to be clamped is not flat, the end face of the locking part can be adaptively clamped by adjusting the stroke distance of the two drive pistons individually, ensuring that it can be firmly clamped even on any uneven surface.

[0013] 3. This clamping device mainly functions on the machine tool's slide rail to fix the slide block and the slide rail, preventing relative sliding. When in use, it is used in conjunction with a locking device. The clamping device is fixed to the slide block, and the locking device is fixed to the machine tool. The locking device is clamped by a locking plate, thus fixing the slide block to the machine tool. This prevents the slide block from sliding relative to the slide rail and from directly clamping the guide rail, ensuring clamping force and preventing damage to the slide rail. Attached Figure Description

[0014] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the overall structure of this application;

[0016] Figure 2 This is a side view of the structure of this application;

[0017] Figure 3 This is a cross-sectional structural diagram of this application;

[0018] Figure 4 This is a cross-sectional view of the first and second liquid inlets of this application.

[0019] Figure 5 This is a schematic diagram of the locking component described in this application.

[0020] In the diagram: 1. Cylinder body; 10. Receiving cavity; 11. Drive hole; 2. Drive piston; 20. Piston rod; 201. Threaded hole; 3. Locking plate; 31. Receiving groove; 311. Locking hole; 32. Connecting part; 33. Clamping part; 331. Clamping notch; 34. Positioning hole; 4. First liquid inlet hole; 5. Second liquid inlet hole; 6. Locking element; 7. Locking bolt; 8. Positioning rod. Detailed Implementation

[0021] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0022] like Figures 1-5 As shown, a dual-piston adaptive clamp includes a cylinder 1 with a receiving cavity 10 inside. Both ends of the cylinder 1 are respectively opened with a drive hole 11 communicating with the receiving cavity 10. The receiving cavity 10 has two drive pistons 2 that match the inner diameter of the receiving cavity 10. The piston rods 20 of the two drive pistons 2 are respectively inserted into the two drive holes 11 and slidably connected to the drive holes 11. The piston rods 20 extend out of the drive holes 11 and are fixed with a locking plate 3. The side walls of the receiving cavity 10 and the drive holes 11 are respectively connected to a first liquid inlet hole 4 and a second liquid inlet hole 5.

[0023] When in use, the clamping device allows liquid to enter simultaneously through the two second liquid inlets 5. The liquid squeezes the piston 2, which is located on one side of the piston rod 20, causing the two piston rods 20 to move towards each other and retract into the cylinder 1. The two piston rods 20 then move the two locking plates 3 towards each other, reducing the distance between them and clamping the corresponding workpiece. Conversely, when liquid enters through the first liquid inlet 4 and exits through the two second liquid inlets 5, the liquid squeezes the two piston 2 on the side closest to each other, causing the two piston 2 to move in opposite directions and extend the two piston rods 20 out of the cylinder 1. The two piston rods 20 then move the two locking plates 3 in opposite directions, increasing the distance between them and releasing the clamping of the corresponding workpiece.

[0024] This clamp does not require high precision from the workpiece to be processed. Even if the workpiece is not straight, it can still achieve the effect of clamping and positioning. When the end face of the workpiece is not straight, although the two locking plates 3 cannot contact the two end faces of the workpiece at the same time, one locking plate 3 will first clamp one end of the workpiece and fix its position. The other locking plate 3 will continue to move under the action of hydraulic pressure and clamp the other end of the locking member 6, thereby completing the clamping and locking of the locking member 6 and achieving adaptive clamping and locking positioning.

[0025] In one embodiment of this application, the cylinder body 1 is fixed to the slide of a machine tool with bolts. A matching slide rail is slidably connected to the slide, and the slide rail is fixed to the machine frame. A locking member 6 is also fixed to the machine frame. The locking member 6 can slide with the slide and is located between two locking plates 3. In use, it is only necessary to machine corresponding mounting holes on the slide and machine frame of the existing equipment to fix the cylinder body 1 and the locking member 6. At the same time, a first infusion hole and two second infusion holes are machined on the slide to realize the extension and retraction function of the piston rod 20. The locking function of the slide can be realized by making simple improvements on the existing equipment. The structure is simple, easy to maintain, and highly versatile.

[0026] One embodiment of the locking element 6 is a U-shaped structure, fixed at the position where the slide needs to be locked. When the slide moves to this position along the slide rail, the protruding part of the locking element 6 is exactly between the two locking plates 3, thereby clamping the two sides of the locking element 6 by the locking plates 3, thus achieving the positioning of the slide. It cleverly transforms the clamping of the slide rail and the slide into the clamping of the locking element 6. The structure of the locking element 6 can be simply designed and manufactured according to requirements. Channel steel can be used. Channel steel is a finished part, which is easy to obtain and has a low cost. It has a larger clamping area and is more stable. While improving the clamping force, it is also easier to operate and can be adapted to any machine tool that needs to position the slide.

[0027] like Figure 3 As shown, threaded holes 201 are provided on the end faces of the two piston rods 20 that protrude from the cylinder body 1. The locking plate 3 is provided with a receiving groove 31 that matches the piston rod 20. The end of the piston rod 20 passes into the receiving groove 31. A locking hole 311 coaxial with the threaded hole 201 is provided on the inner wall of the receiving groove 31. The diameter of the locking hole 311 is smaller than the diameter of the receiving groove 31. A locking bolt 7 is inserted into the locking hole 311. The locking bolt 7 is threadedly matched with the threaded hole 201 and finally passes into the threaded hole 201. Thus, the locking plate 3 and the piston rod 20 are fixed by tightening the locking bolt 7.

[0028] Furthermore, in order to prevent the locking plate 3 from rotating relative to the piston rod 20, a positioning hole 34 is provided on the side wall of the locking plate 3 facing the piston rod 20. A positioning rod 8 is inserted through the positioning hole 34 to press the piston rod 20 against it. The force of the positioning rod 8 prevents the locking plate 3 from rotating radially with the piston rod 20.

[0029] like Figure 5 As shown, the two locking plates 3 are parallel to each other. Each locking plate 3 includes a connecting part 32 and a clamping part 33. The two connecting parts 32 are respectively fixed to the corresponding piston rods 20. The two clamping parts 33 have clamping notches 331 on their opposite sides. The clamping notches 331 are provided at the positions of the locking plates 3 for clamping the workpiece to be clamped. The clamping notches 331 generate multiple planes, which makes them generate a greater force when in contact with the workpiece and can apply force to the workpiece at more angles, thus playing a certain role in positioning and increasing the clamping force.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A dual piston adaptive clamper, characterized by, The cylinder (1) includes a housing (10) inside. Both ends of the cylinder (1) are respectively opened with a drive hole (11) communicating with the housing (10). The housing (10) has two drive pistons (2) that match the inner diameter of the housing (10). The piston rods (20) of the two drive pistons (2) are respectively inserted into the two drive holes (11) and slidably connected to the drive holes (11). The piston rods (20) are inserted out of the drive holes (11) and fixed with a locking plate (3). The side walls of the housing (10) and the drive holes (11) are respectively connected to a first liquid inlet (4) and a second liquid inlet (5).

2. A dual piston adaptive clamper according to claim 1, wherein, Fixed on the slide block, the slide block is slidably connected to a matching slide rail, the slide rail is fixed on the frame, and the frame is also fixed with a locking member (6), the locking member (6) can slide with the slide block and be located in the middle of the two locking plates (3).

3. A dual piston adaptive clamper as claimed in claim 1, wherein, Two piston rods (20) have threaded holes (201) on one end face of the cylinder body (1). The locking plate (3) has a receiving groove (31) that matches the piston rod (20). The end of the piston rod (20) is inserted into the receiving groove (31). The inner wall of the receiving groove (31) has a locking hole (311) that is coaxial with the threaded hole (201). A locking bolt (7) is inserted into the locking hole (311). The locking bolt (7) is threadedly matched with the threaded hole (201) and finally inserted into the threaded hole (201).

4. A dual piston adaptive clamper as claimed in claim 1, wherein, The two locking plates (3) are parallel to each other. The locking plates (3) include connecting parts (32) and clamping parts (33). The two connecting parts (32) are fixed to the corresponding piston rods (20) respectively. The two clamping parts (33) have clamping notches (331) on their opposite sides.

5. A dual piston adaptive clamper as claimed in claim 1, wherein, The locking plate (3) has a positioning hole (34) facing the piston rod (20) on its side wall, and a positioning rod (8) is inserted in the positioning hole (34) to press the piston rod (20) against it.

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