Clamping device for mechanical parts

Abstract

The invention relates to the technical field of mechanical part machining, in particular to a clamping device for mechanical parts, which comprises a workbench, electric sliding rails are fixedly connected to the inner sides of the two ends of the workbench, a first sliding frame is slidably connected between the inner sides of the electric sliding rails, and air cylinders are fixedly connected to the two sides of the lower surface of the top of the first sliding frame; a second sliding frame is fixedly connected between the output ends of the air cylinders, air cylinders are fixedly connected to the two sides in the first sliding frame, adsorption parts are slidably connected to the outer surfaces of the bottoms of the air cylinders in a penetrating mode, pistons are slidably connected to the inner sides of the air cylinders, and transmission rods are symmetrically and fixedly connected to the outer surfaces of the adsorption parts; the inner side of the top of the transmission rod is fixedly connected to the outer surface of the top of the piston, plate parts are extracted through the adsorption part, the clamping device provides stable friction force when clamping plates, the stability in the clamping process is kept, and therefore the reliability in the whole clamping process is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical parts processing, in particular to a clamping device for mechanical parts. BACKGROUND

[0002] In modern mechanical manufacturing, whether it is the machining of precision parts or the assembly of complex components, the clamping device as a key tool plays a crucial role. It not only determines the positioning accuracy and stability of the workpiece during machining, but also directly affects the quality of the final product, production efficiency, and the safety of the operator.

[0003] The clamping device usually clamps and fixes the parts through mechanical force. However, when clamping relatively smooth plate parts, it cannot provide enough friction to fix the plate, causing the parts to slip or fall off. In addition, when clamping stacked plate parts, it is difficult to accurately control the clamping of individual plates, and the phenomenon of clamping together is likely to occur, which can cause scratches and indentations between plate parts, and further damage to the parts.

[0004] Therefore, the present application provides a clamping device for mechanical parts to make up for and improve the shortcomings of the prior art. SUMMARY

[0005] In view of the defects of the prior art, the present application provides a clamping device for mechanical parts, which can effectively solve the above technical problems.

[0006] The technical implementation scheme of the present application is: a clamping device for mechanical parts, comprising a workbench, the inner side of both ends of the workbench is fixedly connected with an electric sliding rail, the inner side of the electric sliding rail is slidably connected with a first sliding frame, the top surface of the first sliding frame is fixedly connected with a gas cylinder on both sides, the output end of the gas cylinder is fixedly connected with a second sliding frame, the inner side of the first sliding frame is fixedly connected with a gas cylinder on both sides, the outer surface of the top of the gas cylinder is fixedly connected with a suction accessory on both sides, the inner side of the gas cylinder is slidably connected with a piston, the outer surface of the suction accessory is fixedly connected with a transmission rod in a symmetrical manner, the inner side of the top of the transmission rod is fixedly connected with the outer surface of the top of the piston, and the suction accessory is used to extract the plate, so that the clamping device provides stable friction when clamping the plate.

[0007] More preferably, the outer surface of the bottom end of the air cylinder is sleeved with a second spring, the bottom end of the second spring is fixedly connected to the upper surface of the suction accessory, the outer surface of the air cylinder is slidably connected with a locking piece, the outer surface of the air cylinder is sleeved with a first spring, the end of the first spring away from each other is fixedly connected to one side of the locking piece, the side away from each other of the suction accessory is provided with a circular hole, and the end away from each other of the bottom of the locking piece is clamped with the circular hole of the suction accessory. When the circular hole on the outer surface of the suction accessory is clamped by the locking piece, the accidental sliding of the suction accessory can be avoided.

[0008] More preferably, the side away from each other of the suction accessory is throughly connected with a one-way valve, the side away from each other of the suction accessory is rotatably connected with a reciprocating screw rod, the outer surface of the reciprocating screw rod is threadedly connected with a sealing piece, the inner side of the bottom of the sealing piece is slidably connected to the outer surface of the air outlet valve, the end close to each other of the bottom of the sealing piece is extruded with the inner side of the air outlet valve, the end away from each other of the reciprocating screw rod is fixedly connected with a one-way gear, the one-way gear can only rotate counterclockwise, the inner side of the two ends of the first sliding frame is fixedly connected with a limiting block, the lower surface of the limiting block is fixedly connected with a rack, the outer surface of the one-way gear is meshed with one side of the rack, and when the one-way gear is rotated on the front side of the rack, the sealing piece can be separated from the one-way valve to block the suction accessory from being adsorbed between the bottom of the suction accessory.

[0009] More preferably, the side close to each other of the bottom of the limiting block is inclined, the side away from each other of the top of the locking piece is extruded with the inclined surface of the top of the limiting block, and when the side away from each other of the top of the locking piece is extruded with the inclined surface of the bottom of the limiting block, the locking piece can be separated from the circular hole on the outer surface of the suction accessory.

[0010] More preferably, the inner side of the limiting block is slidably connected with a sliding piece, the upper surface of the sliding piece is rotatably connected with a rotating rod, the top of the rotating rod is rotatably connected with the outer surface of the two ends of the second sliding frame, the side close to each other of the bottom of the sliding piece is fixedly connected with a plurality of friction pieces, the side close to each other of the bottom of the sliding piece is linearly slidably connected with a slide rod, the outer surface of the end away from each other of the slide rod is sleeved with a third spring, and the end away from each other of the third spring is fixedly connected to the inner side of the bottom of the sliding piece. When the slide rod is attached to the outer surface of the plate, it can be fixed according to different shapes of the plate.

[0011] More preferably, one end of the adjacent friction piece is arc-shaped, and the overall material of the rotating rod is soft. The inclined friction piece can guide the plate, so that the plate can smoothly enter the inner side of the friction piece.

[0012] More preferably, the two sides of the first sliding frame are symmetrically fixedly connected with fixing pieces, outer surfaces of the fixing pieces are all slidingly connected with third sliding frames, the two sides of the first sliding frame are all rotationally connected with screw rods, the screw rods are all rotationally connected with the outer surfaces of the fixing pieces at the ends away from each other, the screw rods are all fixedly connected with spur gears at the ends close to each other, the two sides of the second sliding frame are all fixedly connected with buffer pads, one side of the buffer pad is in meshing engagement with the outer surface of the spur gear, and the third sliding frame can support the plate when moving to the side close to each other, thereby providing a stable support platform for subsequent clamping operation.

[0013] More preferably, the upper surfaces of the bottoms of the third sliding frames are all fixedly connected with buffer pads, and the buffer pads are all soft in material, so that the buffer pads can avoid scratches caused by the third sliding frame when supporting the plate.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] 1. The present application can provide stable friction force for the clamping device when clamping the plate by extracting the plate parts through the suction accessory, maintain the stability in the clamping process, thereby improving the reliability in the whole clamping process, and the suction accessory can also prevent the clamping device from clamping multiple plates at one time when lifting the plate, thereby greatly improving the accuracy and stability of clamping.

[0016] 2. When the sliding piece moves to clamp the plate, the slide rod can be dynamically adjusted and retracted according to the actual profile of the plate, so that the sliding piece can be suitable for plates of various specifications and shapes, and the clamping point of the slide rod is closer to the edge of the plate through the retraction of the slide rod, thereby forming more uniform pressure distribution and enhancing the stability of clamping, effectively preventing displacement or loosening phenomenon in the clamping process.

[0017] 3. When the third sliding frame moves to the side close to each other, the third sliding frame can support the plate before the sliding piece clamps the plate parts of smaller size, thereby providing a stable support platform for subsequent clamping operation, avoiding problems such as sliding, misalignment and the like in the clamping process, and further improving the reliability and safety of the clamping operation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the whole structure of the present application.

[0019] Figure 2 It is a schematic diagram of the structure of the suction assembly of the present application.

[0020] Figure 3 It is a schematic diagram of the structure of the suction assembly of the present application. Figure 2 It is an enlarged view of the structure at A in the present application.

[0021] Figure 4 is a sectional view of the adsorption assembly of the present application.

[0022] Figure 5 is a structural schematic view of the adapting assembly of the present application.

[0023] Figure 6 is a structural schematic view of the receiving assembly of the present application.

[0024] The labels of the components in the drawings are as follows: 1-workbench, 11-electric slide rail, 12-first sliding frame, 2-second sliding frame, 21-cylinder, 22-air cylinder, 221-suction accessory, 23-transmission rod, 231-piston, 24-locking piece, 25-first spring, 26-second spring, 27-rack, 271-one-way gear, 272-reciprocating screw rod, 273-sealing piece, 274-air outlet valve, 28-limiting block, 3-rotation rod, 31-sliding piece, 32-friction piece, 33-sliding rod, 34-third spring, 4-fixing piece, 41-third sliding frame, 42-cushion pad, 43-straight gear, 44-screw rod. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0026] Next, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Figures 1-6 The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application.

[0027] Reference is made to the drawings in the embodiments of the present application. Figure 1 A clamping device for mechanical parts, comprising a workbench 1, the upper surface of the middle part of the workbench 1 is used for placing parts, electric slide rails 11 are fixedly connected to the inner sides of the two sides of the workbench 1, first sliding frames 12 are slidably connected between the inner sides of the electric slide rails 11, and the electric slide rails 11 are used for driving the first sliding frames 12 to slide up and down.

[0028] As described in the background, the clamping device usually clamps and fixes parts through mechanical force. However, when clamping relatively smooth plate parts, it is difficult to provide sufficient friction force to fix the plate, thereby causing the parts to slide or fall off. In addition, when clamping stacked plate parts, it is difficult for the clamping device to accurately control the clamping of single plates, and the phenomenon of clamping together is prone to occur, which can cause the plates to rub against each other and generate scratches and indentations.

[0029] Reference is made to the drawings in the embodiments of the present application. Figures 1-4In order to solve the problem that the clamping device is difficult to clamp the smooth flat plate parts, the embodiment adopts the technical scheme that the two sides of the middle part of the first sliding frame 12 are fixedly connected with the air cylinders 21, the output ends of the air cylinders 21 are fixedly connected with the second sliding frame 2, the second sliding frame 2 is driven to move up and down by the extension and retraction action of the air cylinders 21, the interiors of the left and right sides of the first sliding frame 12 are slidably connected with the air cylinders 22, the two sides of the air cylinders 22 are fixedly connected to the outer surfaces of the top parts of the air cylinders 22, the second sliding frame 2 is used for driving the air cylinders 22 to slide up and down, the outer surfaces of the bottom parts of the air cylinders 22 are slidably penetrated with the suction accessories 221, the suction accessories 221 are used for adsorbing the parts, the inner sides of the air cylinders 22 are slidably connected with the pistons 231, the pistons 231 are used for inhaling air in the air cylinders 22, so that the air cylinders 22 can generate negative pressure, the outer surfaces of the suction accessories 221 are fixedly connected with the transmission rods 23 in a symmetrical mode, the inner sides of the top parts of the transmission rods 23 are fixedly connected to the outer surfaces of the top parts of the pistons 231, and the suction accessories 221 are driven to move up and down while driving the pistons 231 to move up and down through the transmission rods 23.

[0030] When it is necessary to clamp the plate parts, first, the plate parts are placed on the upper surface of the workbench 1 and the electric sliding rail 11 is started, at this time, the electric sliding rail 11 drives the first sliding frame 12 to move downwards, and drives the air cylinders 21 to move downwards at the same time, the air cylinders 21 are driven to move downwards through the second sliding frame 2, which further drives the air cylinders 22 to move downwards at the same time, the air cylinders 22 are driven to move downwards, which further drives the suction accessories 221 to move at the same time, at this time, the lower surfaces of the suction accessories 221 are adhered to the upper surfaces of the parts, in this process, the suction accessories 221 limit the pistons 231 through the transmission rods 23, so that the air cylinders 22 cannot drive the pistons 231 to slide during the downward movement, when the inner sides of the air cylinders 22 slide downwards and adhere to the outer surfaces of the bottom parts of the pistons 231, a negative pressure environment is formed between the air cylinders 22 and the inner sides of the suction accessories 221, so that the bottom parts of the suction accessories 221 can firmly adsorb the plate parts.

[0031] After the adsorption is completed, the staff starts the air cylinders 21, drives the output shafts of the air cylinders 21 to drive the air cylinders 22 to slide upwards through the second sliding frame 2, at this time, the air cylinders 22 are driven to slide upwards, which drives the plate to move upwards at the same time through the suction accessories 221, realizes the lifting of the plate, so as to facilitate the clamping of the clamping device to the plate, when the clamping device clamps the plate in the air, it can provide stable friction, maintains the stability during the clamping process, so as to improve the reliability during the whole clamping process, and the lifting of the plate through the suction accessories 221 can also prevent the clamping device from clamping multiple plates at one time, greatly improves the accuracy and stability of clamping.

[0032] The outer surface of the bottom of the air cylinder 22 is slidably connected with the locking piece 24, the outer surface of the bottom of the air cylinder 22 is fixedly sleeved with the first spring 25, the outer surface of the bottom of the air cylinder 22 is fixedly connected with the locking piece 24, the outer surface of the bottom of the air cylinder 22 is fixedly sleeved with the second spring 26, the bottom of the second spring 26 is fixedly connected with the upper surface of the suction accessory 221, the first sliding frame 12 is fixedly connected with the limiting block 28, the bottom of the limiting block 28 is inclined, and the top of the locking piece 24 is extruded with the clear surface of the bottom of the limiting block 28.

[0033] The outer surface of the bottom of the air cylinder 22 is slidably connected with the locking piece 24, the outer surface of the bottom of the air cylinder 22 is fixedly sleeved with the first spring 25, the outer surface of the bottom of the air cylinder 22 is fixedly connected with the locking piece 24, the outer surface of the bottom of the air cylinder 22 is fixedly sleeved with the second spring 26, the bottom of the second spring 26 is fixedly connected with the upper surface of the suction accessory 221, the first sliding frame 12 is fixedly connected with the limiting block 28, the bottom of the limiting block 28 is inclined, and the top of the locking piece 24 is extruded with the clear surface of the bottom of the limiting block 28.

[0034] When the air cylinder 22 drives the suction accessory 221 to move downward, the lower surface of the suction accessory 221 is attached to the upper surface of the plate, the air cylinder 22 drives the locking piece 24 to continuously move downward, in this process, the air cylinder 22 not only can generate negative pressure in the suction accessory 221 to adsorb the plate, but also can extrude the second spring 26 to the compressed state.

[0035] Meanwhile, when the locking piece 24 moves downward, the bottom of the locking piece 24 can be in the same horizontal line with the round hole on the outer surface of the suction accessory 221, at this time, the first spring 25 in the stretched state can drive the locking piece 24 to move to the side away from each other, so that the bottom of the locking piece 24 can be inserted into the round hole on the outer surface of the suction accessory 221, so that the bottom of the suction accessory 221 can avoid moving when sucking the plate, improve the stability of the plate moving upward, prevent falling off, and the clamping device can clamp the plate sucked by the suction accessory 221.

[0036] When the suction accessory 221 drives the plate to move upward, the suction accessory 221 can drive the one-way gear 271 to move at the same time through the reciprocating screw rod 272, when the one-way gear 271 moves upward, the outer surface of the one-way gear 271 can be engaged with the front side of the rack 27, so as to drive the reciprocating screw rod 272 to rotate clockwise, when the reciprocating screw rod 272 rotates clockwise, the sealing piece 273 can slide to the side away from each other, so that the bottom of the sealing piece 273 away from each other can be separated from the inner side of the air outlet valve 274, so that the outside air can enter the inside of the air cylinder 22, so that the bottom of the suction accessory 221 loses the negative pressure, so that the bottom of the suction accessory 221 loses the negative pressure, so that the bottom of the suction accessory 221 loses the negative pressure.

[0037] When the suction accessory 221 drives the plate to move upward, the suction accessory 221 can drive the one-way gear 271 to move upward at the same time through the reciprocating screw rod 272, when the one-way gear 271 moves upward, the outer surface of the one-way gear 271 can be engaged with the front side of the restriction block 28, so as to drive the reciprocating screw rod 272 to rotate clockwise, and then cause the sealing piece 273 to move to the side close to each other, and re-plug the inner side of the air outlet valve 275.

[0038] In addition, when the air cylinder 22 continuously moves upward, the locking piece 24 can be driven to move at the same time, when the locking piece 24 moves upward, the outer surface of the top of the locking piece 24 away from each other can be extruded by the inclined surface at the bottom of the restriction block 28, so that the locking piece 24 moves to the side away from each other, so that the first spring 25 is moved to the stretched state, and when the locking piece 24 moves, the bottom of the locking piece 24 away from each other can be disengaged from the round hole on the outer surface of the suction accessory 221, at this time, the second spring 26 in the compressed state can drive the suction accessory 221 to slide downward, and when the suction accessory 221 slides downward on the outer surface of the air cylinder 22, the piston 231 can be driven to slide at the same time through the transmission rod 23, so that the piston 231 returns to the initial state on the inner side of the air cylinder 22.

[0039] When the output shaft of the cylinder 21 drives the second sliding frame 2 to move downward, the second sliding frame 2 can drive the suction accessory 221 to move simultaneously through the cylinder 22, and the suction accessory 221 can drive the one-way gear 271 to move simultaneously through the reciprocating screw rod 272, and the one-way gear 271 rotates counterclockwise when moving downward on the front side of the rack 27. Since the one-way gear 271 can only rotate counterclockwise, the one-way gear 271 will not drive the reciprocating screw rod 272 to rotate when rotating.

[0040] When the clamping device clamps plates of different shapes, the clamping points cannot be reasonably distributed, and problems such as incomplete clamping or uneven clamping force are prone to occur, so it is difficult to stably clamp plates of various shapes.

[0041] Reference is made to the accompanying drawings Figure 5 To solve the problem that plates of various shapes are difficult to stably clamp, the embodiment adopts the following technical scheme: the inner side of the limiting block 28 is slidably connected with a sliding piece 31, the front and rear ends of the upper surface of the sliding piece 31 are rotatably connected with a rotating rod 3, the ends of the rotating rod 3 close to each other are rotatably connected to the outer surfaces of the two sides of the second sliding frame 2, the second sliding frame 2 is used to drive the rotating rod 3 to move up and down, the bottom of the sliding piece 31 is fixedly connected with a plurality of friction pieces 32 on the side close to each other, the inner side of the friction piece 32 is used to support the plate, the end close to each other of the friction piece 32 is arc-shaped, the arc surface of the friction piece 32 can guide the plate, so that the plate can enter the inner side of the friction piece 32 more easily, the bottom of the sliding piece 31 is linearly slidably connected with a plurality of slide rods 33 on the side close to each other, the slide rod 33 is used to clamp the outer surface of the plate, the outer surface of the end of the slide rod 33 away from each other is fixedly sleeved with a third spring 34, the end of the third spring 34 close to each other is fixedly connected to the inner side of the bottom of the sliding piece 31, and the third spring 34 is used to drive the slide rod 33 to move back to the original position.

[0042] With the second sliding frame 2 moving upwards, the end of the rotating rod 3 that moves towards each other can also move simultaneously. When the rotating rod 3 moves upwards, the end that moves away from each other can pull the top of the sliding piece 31, prompting the sliding piece 31 to slide towards each other on the inner side of the limiting block 28. When the sliding piece 31 moves, it can also move the friction piece 32 simultaneously, prompting the inner side of the friction piece 32 to support the board. When the sliding piece 31 moves towards each other, it can also move the sliding rod 33 simultaneously. When the sliding rod 33 moves, the end that moves towards each other can press the outer surface of the board. When the sliding rod 33 presses the board of different shapes, it can slide to both sides according to the shape of the board, so that the clamping point of the sliding rod 33 is closer to the edge of the board, thereby forming more uniform pressure distribution and enhancing the stability of clamping. It can effectively prevent displacement or loosening during clamping. When the sliding rod 33 slides, it can also move the third spring 34 to the compressed state.

[0043] When the board processing is completed, the second sliding frame 2 can move the end of the rotating rod 3 that moves towards each other to both sides. At this time, the end of the rotating rod 3 that moves away from each other can move the sliding piece 31 to both sides. When the sliding piece 31 slides to both sides inside the limiting block 28, it can also move the friction piece 32 simultaneously. This prompts the inner side of the friction piece 32 to disengage from the board. When the sliding piece 31 moves, it can also move the sliding rod 33 simultaneously, so that the end of the sliding rod 33 that moves towards each other disengages from the outer surface of the board. The third spring 34 in the compressed state can also move the sliding rod 33 to reset, thereby facilitating the subsequent clamping of the sliding rod 33 to the board.

[0044] When the sliding piece 31 moves inwards to clamp some smaller boards, it is difficult to accurately switch the board between the lower surface of the suction element 221 and the inner side of the sliding piece 31, thereby causing the sliding piece 31 to stably clamp the smaller boards.

[0045] Reference is made to the accompanying drawings Figure 6In order to solve the problem of stable clamping of the sliding piece 31 to the smaller plate, the embodiment adopts the following technical scheme: the left and right sides of the first sliding frame 12 are symmetrically and fixedly connected with the fixed piece 4, the outer surfaces of the fixed piece 4 are slidably connected with the third sliding frame 41, the upper surfaces between the bottom of the third sliding frame 41 are used for supporting the plate, the upper surfaces of the bottom of the third sliding frame 41 are fixedly connected with the buffer pad 42, the whole of the buffer pad 42 is soft, the buffer pad 42 is used for avoiding scratches when the third sliding frame 41 supports the plate, the left and right ends of the first sliding frame 12 are rotatably connected with the screw rod 44, the screw rod 44 is rotatably connected with the outer surface of the fixed piece 4 at the end away from each other, the inner side of the top of the third sliding frame 41 is threadedly connected with the outer surface of the screw rod 44, the screw rod 44 is used for driving the third sliding frame 41 to slide left and right, the outer surface of the side close to each other of the screw rod 44 is fixedly connected with the spur gear 43, the spur gear 43 is used for rotating the screw rod 44, the left and right ends of the second sliding frame 2 are fixedly connected with the buffer pad 42, the second sliding frame 2 is used for driving the buffer pad 42 to move up and down, the front side of the buffer pad 42 is in meshing cooperation with the outer surface of the spur gear 43, and the buffer pad 42 is used for promoting the rotation of the spur gear 43.

[0046] When the second sliding frame 2 moves upwards, the buffer pad 42 moves upwards at the same time, the front side of the buffer pad 42 can be in meshing cooperation with the outer surface of the spur gear 43, and the spur gear 43 can drive the screw rod 44 to rotate, the screw rod 44 can drive the third sliding frame 41 to move to the side close to each other when the screw rod 44 rotates, and the third sliding frame 41 can drive the buffer pad 42 to move at the same time when the third sliding frame 41 moves on the outer surface of the fixed piece 4, at this time, the upper surface of the bottom of the third sliding frame 41 can support the plate adsorbed by the suction member 221, providing a stable support platform for subsequent clamping operation, avoiding problems such as slipping, misplacement and the like in the clamping process, and further improving the reliability and safety of the clamping operation.

[0047] When the plate processing is completed, at this time, the second sliding frame 2 can drive the buffer pad 42 to move upwards, the spur gear 43 can drive the screw rod 44 to rotate in the opposite direction, the screw rod 44 can drive the third sliding frame 41 to move to the side away from each other when the screw rod 44 rotates in the opposite direction, and the third sliding frame 41 can drive the buffer pad 42 to move at the same time when the third sliding frame 41 moves, so that the third sliding frame 41 can return to the initial state, avoiding that the plate adsorbed by the suction member 221 is blocked by the bottom of the third sliding frame 41, and also facilitating the third sliding frame 41 to subsequently support the plate.

[0048] While the disclosure has been illustrated and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the disclosure should not be limited to the embodiments described herein but should be accorded the full scope of the appended claims and their equivalents.

Claims

1. A clamping device for mechanical parts, comprising a worktable (1), wherein electric slide rails (11) are fixedly connected to the inner sides of both ends of the worktable (1), and a first sliding frame (12) is slidably connected between the inner sides of the electric slide rails (11), characterized in that, A cylinder (21) is fixedly connected to both sides of the top lower surface of the first sliding frame (12). A second sliding frame (2) is fixedly connected between the output ends of the cylinders (21). An air cylinder (22) is fixedly connected to both sides of the inside of the first sliding frame (12). The two sides of the second sliding frame (2) are fixedly connected to the outer surface of the top of the air cylinder (22). An adsorption element (221) is slidably connected to the outer surface of the bottom of the air cylinder (22). A piston (231) is slidably connected to the inner side of the air cylinder (22). A transmission rod (23) is symmetrically fixedly connected to the outer surface of the outer surface of the top of the adsorption element (221). The inner sides of the top of the transmission rod (23) are fixedly connected to the outer surface of the top of the piston (231).

2. The clamping device for mechanical parts according to claim 1, characterized in that, The outer surface of the bottom end of the air cylinder (22) is fixedly fitted with a second spring (26), the bottom end of the second spring (26) is fixedly connected to the upper surface of the adsorption member (221), the outer surface of the air cylinder (22) is slidably connected with a locking member (24), the outer surface of the air cylinder (22) is fixedly fitted with a first spring (25), the ends of the first spring (25) that are far apart from each other are fixedly connected to one side of the locking member (24), the adsorption members (221) that are close to each other are provided with round holes, and the bottom ends of the locking member (24) that are far apart from each other are engaged with the round holes of the adsorption member (221).

3. A clamping device for mechanical parts according to claim 2, characterized in that, Each of the adsorption components (221) has an exhaust valve (274) connected through to the side away from each other. Each of the adsorption components (221) has a reciprocating screw (272) rotatably connected to the side away from each other. The outer surface of the reciprocating screw (272) is threaded with a sealing component (273). The inner side of the bottom of the sealing component (273) is slidably connected to the outer surface of the exhaust valve (275). The bottom end of the sealing component (273) is close to each other and squeezed into the inner side of the exhaust valve (275). Each of the reciprocating screw (272) has a one-way gear (271) fixedly connected to the side away from each other. The one-way gear (271) can only rotate counterclockwise. Each of the two ends of the first sliding frame (12) has a limiting block (28) fixedly connected to the inner side. Each of the lower surfaces of the limiting block (28) has a rack (27) fixedly connected to the lower surface. The outer surface of the one-way gear (271) meshes with one side of the rack (27).

4. A clamping device for mechanical parts according to claim 3, characterized in that, The bottom sides of the limiting blocks (28) that are close to each other are inclined, and the top sides of the locking members (24) that are far apart from each other are pressed together with the inclined surface of the top of the limiting blocks (28).

5. A clamping device for mechanical parts according to claim 1, characterized in that, The inner side of the limiting block (28) is slidably connected to a sliding member (31). The upper surface of the sliding member (31) is rotatably connected to both sides of a rotating rod (3). The top ends of the rotating rods (3) that are close to each other are rotatably connected to the outer surfaces of both ends of the second sliding frame (2). The bottom side of the sliding member (31) that is close to each other is fixedly connected to a plurality of friction members (32). The bottom side of the sliding member (31) that is close to each other is slidably connected to a sliding rod (33). The outer surfaces of the sliding rods (33) that are far apart from each other are fixedly sleeved with a third spring (34). The ends of the third springs (34) that are far apart from each other are fixedly connected to the inner side of the bottom of the sliding member (31).

6. A clamping device for mechanical parts according to claim 5, characterized in that, One end of the adjacent friction element (32) is arc-shaped, and the entire rotating rod (3) is made of soft material.

7. A clamping device for mechanical parts according to claim 1, characterized in that, The first sliding frame (12) is symmetrically fixedly connected to two sides of a fixing member (4). The outer surface of the fixing member (4) is slidably connected to a third sliding frame (41). The first sliding frame (12) is rotatably connected to two sides of a screw (44). The ends of the screws (44) that are far apart from each other are rotatably connected to the outer surface of the fixing member (4). The ends of the screws (44) that are close to each other are fixedly connected to a spur gear (43). The second sliding frame (2) is fixedly connected to two sides of a buffer pad (42). One side of the buffer pad (42) meshes with the outer surface of the spur gear (43).

8. A clamping device for mechanical parts according to claim 7, characterized in that, The upper surface of the bottom of the third sliding frame (41) is fixedly connected with a buffer pad (42), and the buffer pad (42) is made of soft material.

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