190results about How to "Clamp firmly" patented technology

The paperboard slitting device with the dust removal function for carton processing comprises a working table, a fixing support is fixedly connected to the middle of the top of the working table, an electric push rod is installed on the top of the fixing support, a loading plate is arranged below the fixing support, a slitting knife is installed in the middle of the bottom of the loading plate, and a dust removal device is arranged on the top of the working table. The two sides of the bottom of the loading plate are each provided with a negative pressure suction nozzle, one side of the workbench is provided with a dust suction machine, the input end of the dust suction machine is fixedly connected with a guide-in pipe, the input end of the guide-in pipe is provided with a three-way pipe, and the output ends of the two negative pressure suction nozzles are each provided with a guide-out hose. The negative pressure suction nozzles are symmetrically arranged on the two sides of the slitting knife, negative pressure generated by the dust suction machine is utilized, generated paper scraps and dust are sucked away in real time in the slitting process, it is guaranteed that scraps generated in the paperboard slitting process can be cleaned in time through the design, and the situation that the scraps are attached to paperboards and cause adverse effects on subsequent machining procedures is avoided.

The utility model discloses a special-shaped nut welding positioning device which comprises a spot welding machine, a supporting and driving supporting frame is fixed on the front surface of the spot welding machine, a cavity is formed in the supporting and driving supporting frame, an adjusting piece is arranged in the cavity in a rotating mode, a supporting piece is fixed at the top end of the adjusting piece, and a driving piece is arranged in the top end of the supporting piece in a sliding mode. A rotating clamping plate is rotatably arranged at the top end of the driving part, a driven stand column is fixed to the bottom end of the rotating clamping plate, a driven roller is rotatably arranged at the bottom end of the driven stand column, a cavity is formed in the rotating clamping plate, a sliding clamping plate is slidably arranged at the top end in the cavity, and a driving screw is rotatably arranged at the bottom end in the cavity. The driving wedge block and the driven wedge block in the driving piece are matched with each other, the driven roller is pushed through the action of the inclined face, then the rotating clamping plate is driven to rotate, the angle of the special-shaped nut is flexibly adjusted, the angle adjusting process is stable and accurate, and the welding positioning accuracy is improved.

The utility model relates to the field of automation, in particular to an adjustable motor screw heading device. The utility model provides an adjustable motor screw heading device which comprises a cabinet, a screw heading machine, an electric turntable, a mounting frame, a screw rod, a guide rod and the like, the screw heading machine is mounted at the top of the cabinet, the electric turntable is mounted at the top of the cabinet, the mounting frame is mounted at the top of the cabinet, and the screw rod is rotatably connected in the mounting frame. Guide rods are connected to the mounting frame in a bilateral symmetry mode. The guide ring can be adjusted to the position suitable for the size of a workpiece through the lead screw, so that the clamping distance of the fixing frames is accurately adjusted, then in the rotating process of the electric rotating disc, the second rolling wheel makes contact with the inclined face of the guide ring, and the two fixing frames automatically move towards the inner side through the synergistic effect of the guide ring, the first rolling wheel and the second rolling wheel; the workpiece is firmly clamped, the stability and precision of the workpiece in the screw driving process are ensured, manual intervention is not needed, and the automation level and the operation efficiency are improved.

The utility model discloses a kind of preheating tool of core box, including tool body, positioning structure and clamping device, positioning structure is fixedly connected with tool body, core box is placed between positioning structure and clamping device, and the clamping of core box is realized by pushing clamping device to be close to or away from positioning structure and loosening;Tool body is provided with guide slot, and the relative sliding of tool body is realized by the cooperation of clamping device and guide slot;Clamping device includes two first columns oppositely arranged, and the fixed seat of two first columns is cooperated with the both sides of core box respectively.The preheating work of the core box can preheat core box, improve the working efficiency of core shooting machine.

The application belongs to the technical field of port equipment, and specifically discloses a flexible clamping device and processing equipment. The flexible clamping device of the application is used for clamping buffer clamp blocks of a trolley mechanism of port equipment, and comprises a lower cover provided with a plurality of first grooves for placing the buffer clamp blocks, and an upper cover used for detachably connecting to the lower cover to fix the buffer clamp blocks placed on the lower cover. The upper cover or the lower cover is provided with processing avoidance holes in one-to-one correspondence with the first grooves, and the processing avoidance holes are used for processing tools to pass through to process the buffer clamp blocks in the first grooves. The flexible clamping device of the application does not need to mark the buffer clamp blocks, can quickly and stably clamp a plurality of buffer clamp blocks, improves processing precision, production efficiency and product quality, realizes batch flexible production and processing of the buffer clamp blocks, and reduces resource waste.

The utility model discloses a kind of adjustable positioning height compression aids, including aid base, compression arm, adjustable positioning threaded rod and compression screw, aid base is fixed on workbench, adjustable positioning threaded rod is equipped in aid base front part, compression arm is set in the just above of aid base, compression arm rear portion is fixedly installed in the rear portion of aid base by fixed bolt, compression screw is equipped in the just above position of adjustable positioning threaded rod corresponding compression arm front portion, compression screw is threadedly connected in compression arm front portion. The utility model is realized product positioning surface uneven "contact" positioning by adjustable positioning threaded rod rotation telescopic function, then compression is carried out, can realize stable clamping, with the advantages of simple structure, wide application range.

This invention discloses a diaphragm feeding mechanism, including a frame, a guide rail, a translation mechanism, a chain transmission mechanism, and a motor. The guide rail is mounted on the side wall of the frame. The lower part of the translation mechanism slides on the guide rail and is connected to the middle part of the chain in the chain transmission mechanism. The chain transmission mechanism is mounted on the side wall of the frame. The motor is mounted on the frame, and the output shaft of the motor is connected to one end of the chain transmission mechanism to drive its operation. Because the translation mechanism of this invention can move back and forth along the guide rail under the drive of the motor and the chain transmission mechanism, the pressure plate on the swing-pressure assembly in the translation mechanism cooperates with the cross plate on the slide to clamp the diaphragm securely.

The application provides a telescopic supporting clamp for milling off to 90-degree machining and a profile machining device, which is applied to the technical field of profile machining and is arranged in a sawing area of the profile machining device. The profile machining device further comprises at least a feeding area and a discharging area. After being machined in the sawing area, the profile workpiece is sent to the discharging area for discharging. The supporting clamp comprises a Z-axis clamping module arranged on the side of a 90-degree saw blade and used for clamping the profile workpiece when the 90-degree saw blade mills off; and a Y-axis driving module connected with the Z-axis clamping module and used for driving the Z-axis clamping module to telescopically extend in the Y-axis direction. By additionally arranging a clamp capable of telescopically extending in the Z-axis direction on the side of the 90-degree saw blade, the clamp extends out to clamp the profile when the 90-degree saw blade cuts off, thereby playing an auxiliary supporting and fixing role, reducing the deformation of the workpiece during machining and improving machining precision.

The utility model provides a kind of for the quick pre-centering fixture of industrial CT detection equipment, including object table subassembly, laser centering device and fixture subassembly, object table subassembly includes bottom layer platform, middle layer platform and object table, middle layer platform is slidably connected with bottom layer platform by first horizontal sliding mechanism, object table is slidably connected with middle layer platform by second horizontal sliding mechanism, first horizontal sliding mechanism and second horizontal sliding mechanism are vertically arranged;Laser centering device includes pedestal, stand and cross laser transmitter, the center of cross laser is coaxial with the central axis of bottom layer platform, and fixture subassembly is used for positioning sample to be detected.The utility model realizes the pre-centering of sample, without frequently switching industrial CT detection equipment to adjust, greatly improve detection efficiency.

The invention provides a combined clamping device for machining and a using method. A U-shaped cover is inversely fixed to the top of a clamp bottom plate, a vertical pull rod is slidably mounted in the center of the top of the U-shaped cover through a sliding sleeve seat, and a chuck is fixed to the top end of the vertical pull rod; the bottom end of the vertical pull rod is in sliding fit with a first shifting fork sliding groove in one end of a double-end shifting fork, and the vertex angle portion of the double-end shifting fork is hinged to the inner wall of the U-shaped cover. An L-shaped vertical rod is fixed to the outer wall of the U-shaped cover, a screw transmission mechanism is installed between the L-shaped vertical rod and the U-shaped cover in a penetrating mode, a threaded sleeve of the screw transmission mechanism is rotationally limited to the U-shaped cover, and a threaded rod is installed in the threaded sleeve in a threaded transmission mode; the end of the threaded rod is in sliding fit with a second shifting fork sliding groove in the other end of the double-end shifting fork and drives the vertical pull rod to vertically ascend and descend through the first shifting fork sliding groove. The clamp adopts a combined transmission structure combining screw transmission and plugging transmission, and can be used for reliably clamping a workpiece in the machining process.

The utility model relates to the technical field of liquefied natural gas detection, in particular to sampling equipment for liquefied natural gas detection. The sampling equipment for liquefied natural gas detection comprises a sampler, a pressure pump, a control panel and an interface, the pressure pump is assembled on the top of the sampler, the control panel is installed on the front side of the sampler, the sampler and the pressure pump are both electrically connected with the control panel, the interface is connected to the bottom of the sampler, and the interface is connected with the pressure pump. The utility model relates to a field joint for butting a liquefied gas storage tank or a pipeline system. The device can stably clamp the pipeline joint through a positioning assembly composed of a guide rod, a moving block, a first spring, a pressing plate and a second spring, provides a reliable positioning and fixing effect, ensures the stability of the device in the sampling process, reduces shaking and displacement, and guarantees the sampling accuracy.

The utility model relates to the technical field of screw pump machining related equipment, and provides a screw pump machining cutting device which comprises a rack and a stand column, the stand column is fixed to the surface of the rack, a fixing assembly is arranged on the surface of the rack, a rectangular groove is formed in the surface of the rack, and a cutting assembly is arranged in the rectangular groove. The fixing assembly comprises a pair of telescopic air cylinders, the telescopic air cylinders are both installed on the bottom face of the rack, the output ends of the telescopic air cylinders are connected with a bracket, the bottom of the bracket is provided with a pair of first movable rods, the lower ends of the first movable rods are movably sleeved with the rack, and a pair of second movable rods are movably connected with the rack in a sleeved mode. The upper end of the second movable rod is connected with a pressing frame. By means of the technical scheme, the technical problem that in the prior art, cutting equipment cannot conduct inner diameter and drilling machining on the rotor universal joint at the same time is solved.

The utility model discloses a crystal separation device of an borneol crystallizing tank, which relates to the technical field of crystal separation of borneol and comprises a bottom plate, an L-shaped plate fixedly connected to the upper surface of the bottom plate, a hydraulic push rod fixedly mounted on the upper surface of the bottom plate, a placing disc fixedly mounted at the top end of the hydraulic push rod, and a solid body of the borneol crystallizing tank placed on the placing disc. And a clamping turnover mechanism and a separating mechanism are arranged on the L-shaped plate. According to the utility model, through the arrangement of the clamping and overturning mechanism and the separating mechanism, the clamping and overturning of the borneol crystallizing tank entity and the efficient separation of borneol in the tank can be realized, the separated borneol can smoothly slide down and be collected, and the automatic separation operation of the borneol is completed.

The utility model relates to the technical field of electric wrenches, and discloses a lithium battery handheld electric wrench which comprises a handle, the bottom of the handle is in threaded connection with an installation bottom ring, a lithium battery is inserted in the handle, a motor is fixedly connected in the handle, and the output end of the motor is fixedly connected with a lead screw. The top of the upper clamp and the top of the lower clamp are arranged, clamping of the upper clamp and the lower clamp is more stable and even through the symmetrically-distributed installation screws, when workpieces such as nuts or bolts are clamped, the workpieces can be effectively prevented from deviating or shaking in the clamping process, the clamping accuracy and reliability are improved, and the clamping efficiency is improved. According to the electric wrench, the first mounting screw and the upper clamp extend to the mounting clamping block, so that the fixing effect of the clamps is enhanced, it is ensured that in the working process of the electric wrench, the clamps can firmly clamp a workpiece, the loosening phenomenon is avoided, and therefore the effectiveness of tightening or loosening operation of the wrench on a nut or a bolt is ensured.

The present application relates to a kind of thin-walled cylinder welding forming process and welded thin-walled cylinder, it is mainly used for metal thin-walled cylinder welding and post-welding treatment process to prevent welding deformation too large.Wherein, thin-walled cylinder diameter (50-1500) mm, cylinder wall thickness range is (0.5-20) mm.Rational welding process is used to solve the problem that product is scrapped due to serious welding deformation.Product processing verification shows that the welding forming control process meets the welding quality requirements of the thin-walled cylinder, and better solves the technical problem of large welding deformation during the welding process of thin-walled cylinder, so that the roundness requirement of the entire thin-walled cylinder assembly after welding is not more than 0.3mm.

The utility model relates to the technical field of heat conduction performance test, disclose a device for testing silicon grease thermal resistance, including base, base outer wall fixedly connected with support plate, base outer wall fixedly connected with support wheel, the extrusion subassembly that is provided with in base top, the extrusion subassembly includes cylinder, cylinder sets up in base top, support plate outer wall fixedly connected with slide post, slide post outer wall slidingly connected with connecting plate no.

The application discloses a clamping tool for processing automobile separator support, which comprises a base, a positioning column and a threaded hole are arranged on the base, and a locking bolt is screwed into the threaded hole; a mounting pressing block is provided with a locking groove along the length direction of the mounting pressing block; the locking groove is used for cooperating with the locking bolt to lock the target automobile separator support on the base. The application aims to provide a clamping tool for processing automobile separator support, so as to solve the problems of inflexible clamping, lack of angle adjusting function and low production efficiency in the prior art, and the clamping tool can adapt to automobile separator supports of different models, simultaneously realize processing of multiple workpieces, and improve production efficiency and processing quality.

This utility model discloses a fabric strip clamping device for a flatbed sewing machine, relating to the field of sewing machine technology. Addressing the issue that existing manual operation by operators easily leads to operator fatigue during prolonged work, affecting the stability and accuracy of clamping and fixing, and that mechanical clamping devices typically have a fixed width and lack flexibility, this invention proposes the following solution: It includes a base plate and a computerized flatbed sewing machine. An outer plate is mounted on the upper end of the base plate via a column, and a moving mechanism is provided on one side of the base plate. The upper end of the moving mechanism is connected to the computerized flatbed sewing machine. Clamping mechanisms are connected to both sides of the upper end of the base plate. The clamping mechanisms are movable downward pressing structures used to press down and clamp the fabric strip for fixation. In this utility model, the moving plate, through a square plate on one side, drives a second electric push cylinder and a pressure plate to adjust the spacing width, improving the versatility and adaptability of the clamping mechanism and meeting diverse production needs.

The utility model relates to the technical field of metal part processing, and discloses a lifting appliance for transferring a metal plate, which comprises a frame, a flange plate is fixedly mounted at the top of the frame, an adsorption component for adsorbing the metal plate is arranged on the frame, and a fixing part is arranged on the frame and used for clamping the metal plate to prevent the metal plate from falling off. The frame is provided with a control assembly used for driving the fixing piece and a pressing assembly used for pressing a metal plate, the metal plate can be rapidly sucked by arranging the suction assembly and the suction cup to be in a suspended state, the control assembly and the fixing piece are arranged, and under driving of the control assembly, the metal plate can be rapidly sucked by arranging the suction assembly and the suction cup to be in a suspended state. The metal plate can be clamped by the fixing piece, rapid and stable clamping of the metal plate is achieved, the carrying efficiency is remarkably improved, the pressing assembly is further arranged to apply pressure to the metal plate, the stability of the metal plate in the carrying process is further enhanced, and the risk of accidental falling is reduced.

The utility model discloses a kind of positioning clamping devices of artillery tail parts, and body is equipped on workbench, and the back of the front side and rear edge of body top is fixed with a supporting body;Positioning plate B is fixed with the back of the front side supporting body of body top, and two compression screws b are in the supporting body of body top rear side;Two positioning plates A are fixed with the top of body between two supporting bodies;Body top left and right ends are respectively fixed with a double-end stud, and the top end of double-end stud has shoulder hexagon nut, and the gap cooperation of the pressing plate below shoulder hexagon nut passes through double-end stud;Outside double-end stud, adjustable support bottom is fixed with body, and the lower end of adjustable support has a small hexagon nut;The top of adjustable support is below pressing plate, and two double-end studs are between two adjustable supports.The utility model does not need to draw line and find right, and positioning is reliable, clamping is stable, groove and hole on four surfaces of workpiece can be processed once clamping, effectively improve processing efficiency.

A walking device for power conductor rotating operation equipment and a control method thereof. The walking device comprises a semicircular plate, lifting mechanisms arranged on both sides of the semicircular plate, telescopic mechanisms, horizontal moving gantry mechanisms connected to the telescopic mechanisms, and driving clamping mechanisms connected to the horizontal moving gantry mechanisms. The control method adopts the walking device, detects obstacles in front in real time by using a detection unit, automatically adjusts the pitch angle by using the rotary connection between the telescopic mechanisms and the semicircular plate, plans a composite obstacle avoidance track by the lateral displacement of the telescopic mechanisms cooperating with the gantry mechanisms according to the shape of the obstacles, and realizes power failure protection by using the mechanical self-locking characteristics of the forward and reverse rotating ball screws and the roller envelope structure. The present application can realize stable obstacle crossing and flexible posture adjustment of the power conductor rotating operation equipment under heavy load conditions, avoid mechanism jamming or wire damage caused by rigid confrontation, and reduce the risk of equipment falling caused by power failure during operation.

The invention discloses a double-head engraving machine. The double-head engraving machine comprises a machine frame, wherein two bases in bilateral symmetry and a lifting support are arranged on themachine frame, an engraving device is arranged on the lifting support, and the engraving device comprises a fixing plate and an engraving assembly movably connected with the fixing plate; and the engraving assembly comprises a connecting shaft and engraving heads arranged at the two ends of the connecting shaft, each engraving head comprises an engraving tool, an engraving bottom plate and a rotating motor, the engraving bottom plates are fixed to the connecting shaft, and rotating shafts are arranged on the engraving tools. According to the double-head engraving machine, embossments are fixedthrough the bases; three-dimensional movement of the engraving heads is achieved through the lifting support, the engraving device and the engraving assembly, the direction of the engraving tools canbe adjusted through the rotating motors, engraving at any position is achieved, the engraving precision is high, a left embossment and a right embossment can be engraved simultaneously, the engravingefficiency is high, engraving functions are diversified, and the occupied space is small.

The application relates to the technical field of wheel hubs, in particular to a vehicle wheel hub, which comprises a hub component group, the outer part of the hub component group is provided with a spoke component group, a quick-connection component group and an adjustable rim component group from near to far. Through the design of the quick-connection component group and the adjustable rim component group, the damaged spoke component group can be quickly replaced without disassembling the wheel hub, and through the cooperation of the outer moving plate, the clamping block and the inserting rod, the dismounting and mounting efficiency of the rim component is further improved.

The utility model relates to the technical field of quenching of valve body class parts, disclose a workpiece automatic clamping mechanism, including base, still include the spring chuck for clamping workpiece of installing on the upper portion of base, the middle part of spring chuck is equipped with the accommodation cavity for workpiece insertion, the outside of spring chuck has the sliding sleeve, the sliding sleeve is the hollow structure, its lower part is sleeved on the base and can slide up and down, the upper periphery surface of spring chuck is the outer taper surface that spreads upwards, the upper inner periphery surface of sliding sleeve is equipped with the inner taper surface cooperation with outer taper surface, when the inner taper surface cooperates with outer taper surface, spring chuck clamps workpiece tightly. The utility model discloses workpiece automatic clamping mechanism, realizes the automatic clamping of the part needing quenching, and the application range is wide.

The utility model relates to the technical field of valve maintenance auxiliary devices, in particular to a pneumatic butterfly valve maintenance auxiliary device which comprises a fixing table, a mounting frame is fixedly connected to the upper end of the fixing table, sliding grooves are formed in the upper portion of the front end and the upper portion of the rear end of the mounting frame, and two supporting plates are fixedly connected to the middle of the upper end of the mounting frame. A driving part is jointly placed at the upper ends of the two supporting plates, a butterfly valve body is fixedly connected to the upper end of the driving part, moving devices are fixedly connected to the lower portion of the left end and the lower portion of the right end of the mounting frame correspondingly, and two clamping butterfly valve assemblies are arranged at the upper ends of the two moving devices correspondingly. According to the pneumatic butterfly valve maintenance auxiliary device, a stable maintenance platform is built through the fixing table, the mounting frame and other structures, accurate positioning is achieved through the moving device, butterfly valves of different specifications can be flexibly matched through the butterfly valve clamping assembly, the problems that positioning is difficult and supporting is not stable during maintenance are effectively solved, and maintenance efficiency and safety are greatly improved.

The utility model relates to the technical field of the automobile repair, and disclose a kind of vehicle door concave flattening device, including mobile base plate, the upper surface of mobile base plate is fixedly installed with mounting bracket, the inner wall of mounting bracket is rotatably connected with vertical screw rod, the top coaxial fixed mounting of mounting bracket is equipped with lift motor of driving vertical screw rod rotation, the surface of vertical screw rod is threadedly connected with lifting frame, and the surface of lifting frame is provided with mounting cylinder.The vehicle door concave flattening device is when using, by control hydraulic rod contraction drives flattening column to move to mounting cylinder interior, realize the purpose of the flattening operation to vehicle door concave, labor intensity is small in flattening process, by setting up inclination adjusting component, utilize hydraulic telescopic rod telescopic drive rack to move, based on rack and pinion engagement, it can drive shaft lever deflection adjust the angle of mounting cylinder, to be able to adjust the angle of flattening, satisfy the demand of the concave flattening treatment of the vehicle door of different angle positions, and strong applicability.

The utility model relates to electromagnetic valve processing equipment technical field, and disclose a kind of overturning tool based on electromagnetic valve threading hole processing, including perforating machine and the base connected on perforating machine, by the mutual cooperation of workbench, handle, T-shaped plate and rectangular slide hole, the batch adding function of the electromagnetic valve to be processed is realized, by rotating handle, electromagnetic valve can be sequentially rotated to the perforating machine below and is perforated, improve work efficiency, so that processing process is more smooth, the structure is simple, convenient to operate, and practicality is strong;By the mutual cooperation of first gear, first rack, worm, worm wheel, second gear and L-shaped plate, the clamping and perforation of electromagnetic valve are realized, first rack drives L-shaped plate to clamp electromagnetic valve, worm worm wheel self-locking ensures clamping stability, while second rack drives L-shaped plate to open and take piece, and operation process is simple and efficient: piece, clamping, perforation, take piece, replace electromagnetic valve conveniently and quickly.

The application relates to a modular air tightness detection device and relates to the technical field of automatic equipment, which comprises a sliding base and a box body, a mounting frame is slidably connected in the sliding base, a dismounting mechanism is arranged in the mounting frame, the dismounting mechanism comprises two round rods, the two round rods are fixedly connected to the inside of the mounting frame, clamping plates are slidably connected to the outside of the round rods, the clamping plates are slidably connected to the inside of the mounting frame, springs are arranged on the outside of the round rods, and a cylindrical block is slidably connected to the inside of the mounting frame. In the utility model, the clamping plates are driven to slide along the round rods by rotating the elliptical wheel, the clamping plates are reset to complete clamping by rotating the elliptical wheel after the pipes are put in, the pipes are quickly mounted and dismounted, the spring elasticity guarantees the clamping stability, the operation is simple, and the efficiency of replacing the clamps of the device is improved.

This utility model discloses a multi-station modular fastening fixture for PCB boards, aiming to solve the problems of low efficiency and inconsistent clamping force leading to poor clamping of copper pillars in existing manual locking methods. The fixture includes a base, a positioning assembly, a double-sided elbow clamping mechanism, and guide posts. The positioning assembly consists of a copper pillar positioning plate and a PCB positioning plate on top of it. The copper pillar positioning plate has an array of copper pillar positioning holes on both sides, and the PCB positioning plate has grooves for positioning the PCB and matching through holes. The double-sided elbow clamping mechanism is symmetrically distributed on both sides of the positioning assembly, and its clamping end has a V-groove structure for reliably clamping the copper pillar. At least two parallel guide posts pass through the positioning assembly and connect to the double-sided elbow clamping mechanism, precisely controlling the clamping / releasing stroke. This utility model, through modular positioning and elbow clamping mechanisms, achieves rapid, accurate, and stable clamping of copper pillars, significantly improving the operational efficiency and product quality stability of PCB board copper pillar locking.

The utility model relates to a kind of special-shaped copper contact milling tool, belong to low-voltage electrical apparatus processing technical field, including bottom plate, the bottom plate is equipped with several special-shaped copper contacts located at the front end of bottom plate, the rear end of special-shaped copper contact is equipped with with bottom plate and is inserted into the positioning block of bottom plate, the rear end of bottom plate is equipped with the pressure plate for the crimping limit of special-shaped copper contact, the front end of special-shaped copper contact is equipped with with bottom plate and is inserted into the floating rod of bottom plate, the lower part of bottom plate is equipped with with floating rod and is threadedly connected self-locking nut.With compact structure, easy operation and good effect characteristics.Solve the accurate positioning, reliable clamping and prevent deformation problem of special-shaped, small, easily deformed copper parts during processing.