54results about How to "Guaranteed clamping effect" patented technology

This utility model discloses a leveling mechanism for the housing of a new energy reducer, relating to the field of testing equipment. The mechanism includes a base plate with a clearance groove in the middle. A top support frame is fixed to the top surface of the base plate, and three lifting devices are mounted on the top support frame. Each lifting device has a contouring component at its moving end. This mechanism can determine whether the top surface of the housing is level with the horizontal detection block by measuring changes in air pressure, thus effectively detecting the levelness of the housing's top surface. Furthermore, by combining this with a corresponding clamp to drive the top surface of the housing to tightly press against the bottom surface of the horizontal detection block, the clamping pressure is reasonably controlled, avoiding situations where the clamping is too loose, resulting in insufficient contact, or too tight, causing damage to the housing. This improves the stability and accuracy of the testing.

This utility model provides a display screen positioning fixture, relating to the field of positioning fixture technology. It includes a mounting base and a mounting plate, and also includes a clamping component disposed on the inner side of the mounting base. The clamping plate is slidably disposed on one side of the mounting base for clamping and limiting the display screen. The limiting component is disposed on the upper surface of the mounting plate, and the grippers are disposed on one side of the mounting plate to ensure product quality and clamping effect. A rubber support block enhances stability and prevents the display screen from sliding. The linkage structure between the trapezoidal protrusion and the limiting block can accurately adapt to displays of different sizes, providing a flexible clamping range. A second spring provides cushioning to avoid damage to the equipment from rigid clamping by the grippers, while ensuring uniform clamping force. This not only guarantees positioning accuracy but also improves the practicality and compatibility of the device.

The utility model provides a kind of special pipe-laying device for roof gas drilling, including main gasket, the conical gasket is fixedly installed in main gasket front side, the mounting bracket is fixedly installed in main gasket side wall, the first bolt is penetrated and set in mounting bracket inside, and is threadedly connected with it, the clamping assembly is arranged in main gasket inside, for clamping hole sealing pipe, sliding limiting assembly in mounting bracket inside, for increasing the stability of device, through independent clamping assembly pertinence solution φ73mm drill rod and the radius difference problem of φ63mm hole sealing pipe, double locking of cooperation block and card slot and the anti-channeling design of wedge structure, make hole sealing pipe clamping force effectively promote, eliminate down channeling risk of hurting people, clamping assembly is convenient for quick dismounting, it is convenient for staff to install and replace, guarantee the clamping effect of device, the sliding adaptation design of connecting frame is compatible with different drilling machine chuck, increase the practicability of device.

This utility model relates to the field of power supply device technology and discloses a power cord anti-pull fixing device, including a cable and a rectangular cover. The cable passes through a circular hole. A limiting component is provided inside the rectangular cover cavity, including a first clamping unit and a second clamping unit. A fixing unit is provided between the first clamping unit and the rectangular cover cavity. A compression unit is provided between the second clamping unit and the rectangular cover cavity. By setting up components such as an arc segment, a first hanging plate, a second hanging plate, a tension spring, a second crossbar, a slide, a guide rod, and a compression spring, the arc segment deformation provides initial buffering, the tension spring stretches to generate a reverse elastic force to disperse the pulling force, and the second crossbar slides along the slide to compress the compression spring to form secondary buffering. The guide rod ensures stable movement direction and avoids deviation from the force. The double elastic buffering structure significantly improves the anti-pull protection effect of the cable and effectively reduces the risk of the cable being pulled apart.

This invention discloses a sewing machine thread handling device and sewing equipment, relating to the field of sewing equipment technology. To address the problems of functional dispersion, structural redundancy, and low space utilization in existing technologies where the thread clamping and thread end collection structures are inefficient, this device includes a needle plate, a thread gripping assembly, and a thread clamping and suction assembly. Both the thread gripping assembly and the thread clamping and suction assembly are located on the needle plate. The thread gripping assembly includes a thread gripping component, and the thread clamping and suction assembly includes a thread clamping part and a suction channel. The thread gripping component and the thread clamping part are arranged opposite to each other to form a thread clamping area for gripping the thread. The suction inlet of the suction channel faces the thread clamping area. This arrangement ensures effective thread clamping while simultaneously collecting thread ends, effectively reducing the number of functional components, simplifying the device structure, and improving space utilization. It also allows thread ends to be immediately sucked in after being removed from the clamp, reducing the risk of thread residue and accumulation, and improving thread end processing efficiency and equipment operational reliability.

The embodiment of the application provides a test tool, which comprises: a first base, a first force applying mechanism, a first clamping assembly and a supporting assembly are arranged on the first base, and the supporting assembly is used for supporting a component to be tested; a second base is arranged at a distance from the first base along the height direction of the first base, a second force applying mechanism and a second clamping assembly are arranged on the second base, the first clamping assembly is arranged opposite to the first clamping assembly, so that a clamping space is formed between the second clamping assembly and the first clamping assembly, and the clamping space is used for accommodating a fixed end of the component to be tested; the second base moves towards the first base along the height direction of the first base, can drive the second force applying mechanism to move synchronously, and then drives at least part of the first force applying mechanism to move along the stress direction of the component to be tested, so as to test the stress of the component to be tested. The scheme solves the problem that the test tool in the prior art cannot test the components whose forming direction is inconsistent with the stress direction.

The utility model discloses a punching device for a steel lining PTFE pipe. The punching device comprises a bottom plate, a height adjusting assembly is fixedly installed at the top of the bottom plate, a punching assembly is fixedly installed at the top of the height adjusting assembly, and a clamping assembly is fixedly installed at the top of the bottom plate. The height adjusting assembly comprises a fixing frame and a first threaded rod, the fixing frame is fixedly installed on the top of the bottom plate, the first threaded rod is connected to the inner side wall of the fixing frame through a bearing, the bottom end of the first threaded rod is fixedly connected with a first bevel gear, and the side wall of the first threaded rod is connected with a lifting frame through threads. According to the punching device for the steel lining PTFE pipe, through the arrangement of the height adjusting assembly and the punching assembly, punching work can be conducted on a pipe body, punching is easy and convenient, the punching height can be adjusted according to the diameter of the pipe body, the pipe body of any diameter has the good punching effect, and the using effect is better.

The utility model discloses a mechanical arm clamping jaw device which comprises a fixing frame, a double-output-shaft driving mechanism is installed in the fixing frame, two ball screws are located on the two sides of the double-output-shaft driving mechanism, one end of each ball screw is movably connected to an end plate on one side of the fixing frame through a bearing, and the other end of each ball screw is movably connected to an end plate on the other side of the fixing frame through a bearing. The other end of the ball screw is fixed to the output end of the double-output-shaft driving mechanism, and the lead screw nut is connected to the ball screw in a threaded mode. A moving block is fixed to the lead screw nut, and a clamping jaw part is fixed to the top face of the moving block. A guide rod is fixed to the upper portion between the two end plates of the fixing frame and inserted into a guide through hole formed in the middle of the moving block in a sleeved mode, and the guide through hole penetrates left and right. According to the hub clamping device, the moving position of the clamping jaw part can be limited, meanwhile, the clamping force of the clamping jaw part is inducted, and the clamping jaw part is prevented from clamping excessively, so that it is guaranteed that the force for clamping a hub is proper, deformation caused by excessive clamping is prevented, and the clamping effect is guaranteed.

This utility model discloses a cutting device for leather production, relating to the technical field of leather production equipment. It includes a conveyor table, with a cutting seat welded and fixed at the middle of the upper surface of the conveyor table. A lifting plate is installed inside the cutting seat, and the lifting plate slides and limits the movement within the inner cavity of the cutting seat. A cutter is installed at the bottom of the lifting plate and is fixed to the lifting plate by bolts. A notch is provided at the top of the lifting plate. A support plate is welded and fixed to the rear side of the top of the cutting seat. A reduction motor is fixedly installed above the support plate, and an eccentric wheel is installed on the output shaft of the reduction motor. Leather guide seats are provided at both the front and rear ends of the conveyor table. The front leather guide seat moves the rolled leather towards the cutting position of the cutting seat, while the rear leather guide seat removes the cut leather belt from the conveyor table. This solves the problem of continuous cutting while ensuring cutting accuracy.

This utility model discloses a clamping mechanism for testing the tensile strength of ropes and cables. It includes a base, with two limiting rails at the top of the base. Two bearing plates are positioned above the limiting rails, and rail blocks are installed at the corners of the bottom of each bearing plate. The bottom of each rail block is slidably connected to the top of the limiting rails. Positioning seats are fixedly installed on both sides of the top of the base. Telescopic cylinders are installed on the outer walls of the positioning seats, with one end of each cylinder penetrating the positioning seat and connecting to the outer wall of the bearing plate. A control panel is installed on one side of the top of the base. The output of a microcontroller inside the control panel is electrically connected to the input of the telescopic cylinder. A base frame is provided at the top of each bearing plate. This utility model not only improves the applicability of the clamping mechanism but also enhances its convenience in clamping ropes and cables, and ensures effective clamping of the ropes and cables during use.

The utility model relates to phenolic pressboard clamping technology field especially relates to a kind of quick clamping mechanism of phenolic pressboard annular material, including device seat, the shell is installed on device seat, clamping groove is opened in the shell, clamping plate is movably connected in the clamping groove, mobile block is set on the one end of clamping plate, lower block is movably connected in the clamping plate, synchronous rotating lever is installed in mobile block, the bottom side of synchronous rotating lever is provided with threaded rod, support frame is also installed on the bottom surface of device seat.This scheme, reduce the situation that manual consumption large amount of time is accurately placed in the process of material placement, reduce the possibility that annular object can produce large-scale deformation in clamping process, improve the effect that device is more convenient installation and clamping, also improve the compacting effect to material, can avoid material edge warping in the process of pressing.

The utility model relates to the technical field of cutting, in particular to a metal wire cutting device which comprises a cutting machine, a cutting table is arranged on a machine frame of the cutting machine, a cutting head is arranged above the cutting table in a matched mode, at least two clamping assemblies are arranged on the machine frame, and the cutting head is arranged on the cutting table in a matched mode. The clamping assembly is arranged on the rack through the moving assembly. The clamping assembly comprises a support, a horizontal telescopic rod and a clamping piece, the support is connected with the moving assembly, the fixed end of the horizontal telescopic rod is fixedly connected with the support, and the telescopic end of the horizontal telescopic rod extends to the cutting table and is connected with the clamping piece. The metal wire cutting device is reasonable and simple in structure, low in cost and capable of achieving continuous, efficient and stable metal wire cutting, clamping of uncut metal wires can be kept all the time in the cutting process, and the problem that after the metal wires are loosened, the metal wires need to be pulled again, and consequently efficiency is low is solved.

The utility model provides a wafer overturning structure, which relates to the technical field of semiconductor processing, and comprises an overturning platform mounting plate and an overturning assembly, the overturning assembly comprises a motor arranged on the overturning platform mounting plate, the output end of the motor is provided with a rotating plate, the bottom of the rotating plate is fixedly provided with a cantilever, the cantilever is provided with an adsorption plate, and the adsorption plate is arranged on the overturning platform mounting plate. According to the utility model, the motor drives the rotating plate to rotate and drives the cantilever and the adsorption plate to realize wafer overturning, the parallel finger cylinder pushes the cylinder clamping plate to enable the centering clamping plate to move along the direction of the wafer so as to realize centering calibration of the wafer, and the first cylinder and the second cylinder are linked to adjust the telescopic stroke of the adsorption plate so as to adapt to different wafer sizes. The vacuum chuck is connected with an air channel through an air pipe connector to generate negative pressure to adsorb the wafer, then the motor is started, constant-speed rotation is achieved through the speed reducer, the cantilever drives the wafer to complete turning over, and therefore the wafers of different sizes can be turned over in a compatible mode.

The utility model discloses a clamp for stainless steel joint production, which comprises an inner collet chuck and an outer collet chuck movably sleeved outside the inner collet chuck, and a plurality of chucks are arranged at the head of the inner collet chuck. S-shaped grooves are formed in the chuck and the conical surface, so that clamping force is distributed more uniformly, and linear clamping damage to the surface of a workpiece is effectively avoided; meanwhile, the wear-resistant block is additionally arranged to reduce conical surface wear, and the wear-resistant block is detachable, replaceable and convenient to maintain; in addition, the outer collet comprises a driving barrel and a pressing barrel which can move relatively, when the wear-resisting block is worn, the pressure of the conical groove on the conical surface can be kept by adjusting the position of the pressing barrel, the clamping effect of the clamp is ensured, and the machining quality and efficiency of stainless steel joint production are improved.

The utility model discloses a mould isosceles structure in the technical field of forming mould, including lower die seat and lower die core plate. Lower die seat has the core plate groove, and lower die core plate is fixed in the core plate groove. Lower die seat is equipped with a plurality of isosceles columns, and a plurality of isosceles columns are arranged around the outer periphery of the core plate groove. The upper end of isosceles column has the positioning end face. In the mould isosceles structure of the utility model, lower die core plate is positioned through the core plate groove, and the height position of the positioning end face of isosceles column is controlled in accuracy to the effect of mould closing, and the difficulty of detection and processing is low, thereby reducing the machining accuracy requirement and the casting cost of lower die seat, and having important economic significance for production.

The utility model relates to the technical field of cutting tools, in particular to a double-end groove cutter. The double-end grooving cutter comprises a clamping part and a cutting part, the clamping part is provided with a first clamping face and a second clamping face which are oppositely arranged in the first direction, the first clamping face and the second clamping face abut against and are fixed to a machine tool, and a first notch is formed in the end, in the second direction, of the first clamping face; the first notch and the second notch are in central symmetry relative to the clamping portion, the first direction is perpendicular to the second direction, the first notch and the second notch are each provided with a cutting portion, and the cutting portion located in the first notch is located on the inner side of the first clamping face in the first direction. The cutting part located in the second notch is located on the inner side of the second clamping face in the first direction, the cutting part is configured to cut a workpiece, the effective clamping area of the clamping part and a machine tool is increased during cutting machining, the clamping effect of the machine tool on the double-end grooving cutter is guaranteed, protection on the double-end grooving cutter is improved, and cost is saved.

The utility model discloses a dustproof test box structure, which relates to the technical field of dustproof test boxes and comprises an outer box body, an inner box is arranged on the inner side of the outer box body, a dust scattering ball is arranged on the top side in the inner box, a dust outlet pipe is arranged on the inner side face in the inner box, and an air outlet of the dust outlet pipe is aligned with the dust scattering ball. A dust collecting hopper is arranged on the lower portion of the inner box, a dust suction pipe transversely penetrates through the inner bottom side of the dust collecting hopper, dust suction openings are formed in the lower side face of the dust suction pipe at equal intervals, and a vibration motor is installed on the lower side face of the dust collecting hopper. According to the utility model, by arranging the dust dispersing ball, dust blown out by the dust outlet pipe can be uniformly dispersed and fall when encountering the dust dispersing ball, so that the dust uniformly falls on a tested object, and the test effect is ensured.

This utility model discloses a transformer clamp placement rack, including a base plate. Vertically arranged support columns are fixedly connected to the four corners of the top surface of the base plate. Several horizontally arranged support plates are detachably connected between the side walls of two adjacent support columns, and the support plates are evenly spaced along the length of the support columns. Several transformer clamps are placed between the top surfaces of two opposing support plates. Several vertically arranged partitions are detachably connected to the top surface of the base plate, and the partitions are of the same length as the support columns. The transformer clamps are placed between adjacent partitions. This utility model allows for layered placement of transformer clamps, ensuring that each transformer clamp only bears its own weight, preventing damage to the bottom clamps; and it separates the transformer clamps in each layer, preventing mutual friction and collision between the clamps.

The application discloses a shockproof clamping tool for machining an elongated shaft part, and relates to the technical field of machining equipment. The tool comprises a rack, a plurality of groups of supporting bottom blocks are transversely arranged on the rack, a quick locking elbow clamp is arranged on one side of each supporting bottom block, limiting blocks matched with the supporting bottom blocks are also arranged on the rack at intervals, an end supporting block is arranged on one side of the supporting bottom block at the edge, and a quick locking elbow clamp is also arranged on one side of the end supporting block. V-shaped first limiting grooves are formed in the supporting bottom blocks and the end supporting block, and a limiting column is arranged in the first limiting groove of the end supporting block. The limiting block is rotationally connected with the fixing block, and an arc-shaped second limiting groove is formed in the lower surface of the limiting block. The quick locking elbow clamp comprises a handle assembly, a connecting rod transmission mechanism, a clamping execution component and a mounting base. Universal wheels are arranged at the bottom of the rack, lifting rings are arranged at the top of the rack, and a supporting group with supporting wheels is arranged on one side of the upper surface of the rack. The tool has the beneficial effects of effectively preventing shock, stable clamping, convenient operation, strong adaptability and the like.

The utility model relates to the technical field of machine tools, and discloses a cross beam clamping mechanism and a gantry processing machine thereof, the cross beam clamping mechanism comprises a cross beam body and a door arch structure for installation, one side of the cross beam body is provided with a clamping assembly for clamping, the clamping assembly comprises a track, a swing rod, a sliding block, a reduction gearbox and a clamping block, the track and the cross beam body are fixedly installed, and the swing rod is connected with the sliding block. Two sliding blocks which can be close to each other are arranged on one side of the rail, a rotatable swing rod is arranged on one side of each sliding block, a clamping block which can rotate and slide around the swing rod is arranged at the lower end of each swing rod, the swing rods are driven by a reduction gearbox, and the reduction gearbox pushes the swing rods to swing so that the positions of the clamping blocks can be adjusted. The clamping device has the advantages that the clamping range is further widened, the overall structure is simple, later maintenance is facilitated, and when a small workpiece is clamped, the two swing rods can be adjusted to be distributed in an inner eight-way mode so as to avoid displacement of a machining head.

This invention relates to the field of intelligent roundness measurement technology, and more particularly to a roundness measurement device for a hydro-generator rotor. The device includes a testing platform with a hoisting and placement mechanism, a clamping and rotating mechanism, and a cleaning mechanism at its top. The hoisting and placement mechanism includes two clamping plates symmetrically arranged, each with a trapezoidal block fixedly connected to one end near each other. The clamping plates are used to clamp and fix the upper part of the rotor body. The clamping and rotating mechanism includes two fixed discs symmetrically arranged, each with a clamping seat fixedly connected to one end near each other. Each clamping seat has a trapezoidal block fixedly connected to one end near each other, and the clamping seats and clamping plates form a cylinder. This invention avoids the need for subsequent adjustments to the rotor body during placement, reducing time waste and improving placement efficiency, thereby increasing the efficiency of subsequent roundness testing of the rotor body.

The utility model discloses a balanced hydraulic three-shaft clamp, which belongs to the technical field of clamps and comprises a clamping base, the clamping base comprises a base, a processing component is mounted at the top of the base, and a cutting component is arranged above the base in a transmission manner; the clamping mechanism comprises a clamping chuck, the clamping chuck is located on one side of the machining assembly and corresponds to the cutting assembly, a worm disc is connected to the upper portion of the clamping chuck in a clamped mode, the machining assembly and the cutting assembly correspond to the worm disc, an auxiliary clamping assembly is arranged in the clamping chuck, and the auxiliary clamping assembly comprises a containing disc. The placement disc is located in the clamping chuck and at the bottom of the worm disc, the outer side of the placement disc is communicated with a gas conveying pipe, the outer side of the placement disc is correspondingly provided with a gas nozzle, ventilation is conducted through the gas conveying pipe, the pressure of gas flowing out of the gas holes in the supporting blocks is detected, whether the worm disc is well placed or not can be determined in time, and if not, an alarm is given; and processing errors and material waste are avoided.

The utility model discloses a filling barrel carrying and turning device which comprises a pushing mechanism for carrying a filling barrel and a turning pouring mechanism connected with the pushing mechanism. The overturning material pouring mechanism comprises a right installation stand column, a left installation stand column, a plurality of cross beams arranged between the right installation stand column and the left installation stand column, a first track groove, a second track groove, a turbine worm assembly and a first bearing seat, wherein the first track groove and the second track groove are formed between the right installation stand column and the left installation stand column, and the turbine worm assembly and the first bearing seat are arranged on the right installation stand column. The first hand wheel is connected with the worm gear and worm assembly, the right supporting seat is coaxially connected with the first bearing seat and connected with the worm gear and worm assembly, the second bearing seat is arranged on the left installation stand column, and the left supporting seat is arranged on the second bearing seat and is opposite to the right supporting seat. The filling barrel overturning and clamping mechanism is arranged between the right supporting seat and the left supporting seat; and the filling barrel overturning and clamping mechanism is clamped at the upper part and the lower part of the filling barrel.

The utility model relates to the technical field of stamping, and discloses a stamping part positioning device which comprises a base, a motor is fixedly mounted at the top of the base, two mounting blocks are connected to the top of the base, a lead screw is rotatably connected between the two mounting blocks, a sliding seat is in threaded connection with the outer side of the lead screw, and a workbench is mounted at the top of the sliding seat. According to the stamping part positioning device, a lead screw is rotationally connected between two mounting blocks, the outer side of the lead screw is in threaded connection with a sliding seat, the sliding seat can move on the lead screw through a motor to drive a workbench to move, the outer side of a guide rod is slidably connected with two guide seats, the guide seats are fixedly mounted at the bottom of the workbench, and the guide rod can provide a guide effect; the first sliding groove is of a #-shaped structure on the workbench, so that the sliding block can be adjusted in multiple directions, the suction cup can prevent the workpiece from sliding on the workbench, the proximity sensor is installed on the side face of the top of the workbench through the support, and the proximity sensor can be used for detecting the position of the workpiece to ensure that the workpiece is placed in place.

This utility model relates to the field of strip steel processing technology, specifically to a lifting and clamping device for strip steel. The lifting and clamping device includes a drive motor, two opposing clamping plates, and a transmission device. The transmission device includes two connecting rods, two first rotating rods, two second rotating rods, a fixed frame, and two meshing transmission gears. The connecting rods rotate in an arc shape under the drive of the first and second rotating rods, and the clamping plates gradually approach and clamp the head of the strip steel as they descend. The connecting rods and the fixed frame are arranged in parallel, as are the first and second rotating rods, forming a parallelogram shape for the entire transmission device. This facilitates the drive motor's operation, allowing the clamping plates on both sides to approach each other and fully clamp the strip steel. This prevents the strip steel from slipping out of the clamping plates due to unstable clamping, which could cause surface wear and affect strip steel transport efficiency and coiling quality.

This invention relates to the field of corrugated pipe processing technology, specifically disclosing a circumferential cutting device for corrugated pipe processing. The device includes a main body with an inlet and an outlet at both ends. A fixing plate is mounted on the outer wall of the main body near the inlet, and a cleaning mechanism is located at the bottom of the fixing plate. Two rotating frames are mounted on the outer wall of the main body near the outlet, one of which has a detection mechanism. A traction mechanism is also located at the end of the main body near the outlet. In this invention, before the corrugated pipe enters the main body for circumferential cutting, the cleaning mechanism automatically cleans impurities adhering to the outer wall of the corrugated pipe. This prevents impurities from affecting the visual positioning system's recognition, thus avoiding a decrease in the cutting efficiency of the device. This improves the cutting quality and accuracy of the corrugated pipe, thereby simultaneously enhancing the reliability of the main body.

Automatic lifting equipment of a crane effectively solves the problem of poor clamping effect and comprises a main beam, a crane carriage, a winch, a steel wire rope and a lifting appliance, the lifting appliance comprises a body, a pulley block is installed at the upper end of the body, a first clamping plate and a second clamping plate are hinged to the body, and a first clamping jaw is fixed to the lower end of the first clamping plate; a first clamping jaw is fixed to the lower end of the first clamping plate, a second clamping jaw is fixed to the lower end of the second clamping plate, a first boss is fixed to the inner side of the first clamping plate, a second boss is fixed to the inner side of the second clamping plate, and the first boss and the second boss are located at the same height. Transverse plates are fixed to the upper end of the first clamping plate and the upper end of the second clamping plate, through grooves are formed in the transverse plates, guide rods are fixed to the body and located in the through grooves, the guide rods are sleeved with sliding rings, the sliding rings slide up and down along the guide rods, springs are installed between the body and the sliding rings, and the sliding rings make contact with the transverse plates all the time.

The utility model discloses a multi-station clamping vise clamp, which relates to the technical field of CNC (computer numerical control) machining and comprises a mounting base, two vise mounting plates are arranged at the top of the mounting base and attached to the mounting base, and a sliding opening is formed in one side, close to the center of the mounting base, of each vise mounting plate. And connecting grooves are formed in the tops of the two vice mounting plates, connecting blocks are arranged on the inner sides of the connecting grooves in a clamped mode, and adjusting assemblies are arranged at the bottoms of the connecting blocks. In the using process of the device, the mounting base, the vice mounting plate and the connecting block are arranged to be independent modules, the production difficulty of parts of the device is lowered, worn or damaged parts can be independently detached and replaced, the downtime and the maintenance cost are reduced, workers can conveniently and rapidly replace second clamping plates of different specifications, and the working efficiency is improved. Therefore, diversified workpiece clamping requirements are met, the clamping effect is guaranteed, and meanwhile practicability and economical efficiency are taken into account.