225results about How to "Easy clamping" patented technology

The invention discloses a weak-rigidity free-form surface monocrystalline silicon reflecting lens and a processing method thereof. The method comprises the following steps: obtaining a monocrystalline silicon block; cutting into blocks; diamond wire cutting; precisely grinding the back surface; performing slicing; the free-form surface sucker adsorbs the lens; precisely grinding the front surface into a cylindrical surface; polishing the magnetorheological elastomer; releasing the lens; the cylindrical sucker adsorbs the lens; precisely grinding and thinning the back surface; releasing the lens; cutting edges and carrying out wet etching on the back surface; and carrying out ion beam modification processing to achieve the final surface shape precision of the free-form surface. According to the X-ray reflecting lens machining method, the free-form surface weak-rigidity reflecting mirror is clamped and deformed into the cylindrical surface for machining, the whole process is ultra-precision grinding and polishing of the cylindrical surface, the machining method is simple and mature, the manufacturing cost is extremely low, dependence on an ultra-high-precision multi-axis linkage machine tool is completely eliminated, and the machining precision is greatly improved. And the machining efficiency is greatly improved, and the method is suitable for mass production of reflectors.

The utility model discloses a pressure vessel welding butt joint device, which relates to the technical field of welding butt joint devices and comprises a bottom plate, a movable connecting shaft, a bottom supporting structure, an adjusting and fixing structure and a rotating structure. Two pressure containers are placed between the arc-shaped clamping plates on the two sides, then the electric push rod is started, the electric push rod drives the right supporting plate to slide on the sliding groove, then the rotating structure and the movable connecting shaft at the right end are driven to slide in the direction of the connecting plate, and the operation is beneficial for clamping the pressure containers; therefore, the stability of the pressure vessel during butt joint is improved. The connecting telescopic rod stretches out and draws back, stretching out and drawing back of the arc-shaped clamping plates are driven by stretching out and drawing back of the connecting telescopic rod, then the size of an annular ring formed by the arc-shaped clamping plates is adjusted, and therefore the device adapts to pressure containers of different sizes; the telescopic rod stretches out and draws back, the telescopic rod stretches out and draws back to drive the two supporting arc-shaped plates to stretch out and draw back, and the operation is beneficial to exerting lower end supporting force on the pressure container, so that the pressure container is more stable and smoother in the welding work.

The invention relates to the technical field of composite turn-milling machine tools, and discloses a numerical control composite turn-milling machine tool and a turn-milling method for precision part machining.The numerical control composite turn-milling machine tool comprises a device body, a sliding cover plate is slidably mounted on the outer portion of the device body, a machining bin is formed in the device body, and a milling mechanism is mounted in the machining bin; a movable sliding rail is installed in the machining bin, a turning mechanism is installed on the movable sliding rail in a sliding mode, and a driving mechanism is installed on the movable sliding rail. When the driving mechanism drives all the fixed clamping jaws to move towards the center of the clamp rotating disc, the fixed clamping jaws can clamp a part, and after the part is clamped, the limiting rotating disc continues to rotate, a buffer spring can be compressed, so that the clamping force of the fixed clamping jaws on the part is relieved; and when the internal structure of the part is changed in the machining process, the part can be better clamped through springback of the buffer spring, and the part is prevented from being disengaged from the clamp due to external deformation.

The invention discloses a mast mechanism capable of automatically adjusting the angle of a lamp holder by detecting the environment, and relates to the technical field of masts. Comprising a lamp holder, a clamping mechanism is installed on the lamp holder, a pressurizing mechanism is installed on one side of the clamping mechanism, the pressurizing mechanism is connected with a dust removal box through a pipeline, the dust removal box is installed on the lamp holder, an identification mechanism is installed below the pressurizing mechanism, an illuminating lamp is installed on one side of the identification mechanism, and a flow guide cover is installed on one side of the illuminating lamp. The clamping mechanism is used for clamping the mast, the pressurizing mechanism is used for pressurizing the clamping mechanism and the dust removal box, the dust removal box is used for removing dust in the lamp holder, the adjusting mechanism is used for adjusting the angle of the flow guide cover, and the recognition mechanism is used for detecting the wind direction. The recognition mechanism recognizes the wind direction, the angle of the flow guide cover is adjusted through the wind direction, the adverse effect of the illuminating lamp is reduced, and the pressurization mechanism conducts pressurization treatment or negative pressure treatment on the dust removal box, the positioning block A and the flow guide cover.

The present invention relates to a single traction machine for aluminum profiles, comprising a traction frame, a first moving trolley and a second moving trolley, wherein the top of the traction frame is provided with a traction guide rail, and the first moving trolley and the second moving trolley are both slidably mounted on the traction guide rail; and further comprising a cutting device, a material lifting device, a traction device, a trolley driving device for driving the first moving trolley, and a trolley moving device for driving the second moving trolley. The single traction machine for aluminum profiles provided by the present invention is easy to use, can effectively protect the surface of the aluminum profile, and is convenient for inserting the aluminum profile into the traction machine for clamping. At the same time, only one set of cylinders is needed to realize the retraction and pushing of the clamping device, the structure and control are simple, the working efficiency is high, and the equipment cost is reduced.

The utility model discloses an aircraft thin-wall part machining device, and relates to the technical field of aircrafts. The aircraft thin-wall part machining device comprises a bottom plate, thin-wall channel steel, a transverse plate and a moving structure, an L-shaped plate and a base plate are fixedly installed at the top of the bottom plate, two sets of clamping plates distributed left and right are arranged at the top of the bottom plate, a bidirectional lead screw is arranged on the bottom plate, the thin-wall channel steel is placed on the base plate, and the transverse plate is arranged at the top of the bottom plate. Two sets of vertical plates distributed front and back are arranged at the bottom of the transverse plate, polishing plates are arranged on the vertical plates, a two-way threaded rod is arranged on the transverse plate, and the moving structure is arranged on the L-shaped plate and the transverse plate. According to the aircraft thin-wall part machining device, the two faces of thin-wall steel channels can be polished at the same time, then the machining efficiency is improved, the thin-wall steel channels of different sizes can be machined, the application range of the device is widened, and the practicability of the device is improved.

The invention relates to a universal mandrel groove grinding device, in particular to a universal mandrel adjustable groove grinding device and a groove grinding method, and aims at solving the technical problems that when an existing clamp is used for grinding sliding grooves of a universal mandrel, it is difficult to guarantee that the included angle between the groove and the central axis of the mandrel meets the technical requirement, indexing of the three sliding grooves is inaccurate, and the repeated positioning precision is low. The device comprises a wedge-shaped bottom plate, and a first clamping mechanism, an indexing mechanism, a supporting mechanism and a second clamping mechanism which are arranged on the wedge-shaped bottom plate, the first clamping mechanism and the second clamping mechanism are used for positioning the universal mandrel to be subjected to groove grinding from the two ends in the axial direction correspondingly. The supporting mechanism is used for supporting and fixing a universal mandrel of a to-be-ground groove; the indexing mechanism comprises a tooth aligning pin seat, a tooth aligning pin and an indexing ring; the tooth aligning pin is mounted on the tooth aligning pin seat, and positioning teeth are arranged at the top of the tooth aligning pin; a plurality of jackscrews are arranged on the indexing ring; a positioning groove is formed in the peripheral surface of the indexing ring; and the positioning teeth are matched with the positioning grooves so as to realize circumferential positioning of the universal mandrel to be subjected to groove grinding.

The utility model relates to the field of bench workers, in particular to a novel bench worker workbench. Comprising a threaded shaft, an adjusting block, a plurality of fixing ends with rubber clamping blocks and the like which are matched with one another, compared with the prior art, the workpiece fixing device has the advantages that the workpiece fixing device is improved on the basis of a workpiece fixing mechanism in a traditional bench vice mode, a similar vice fixing end is modified into the adjusting block, the two arc-shaped fixing ends capable of being adjusted are arranged in the adjusting block, a workpiece is fastened through clamping of the four contact ends, and the workpiece fixing device is simple in structure and convenient to use. The clamp has an effect on most workpieces with complex appearances, so that the workpieces can be clamped more conveniently and easily when a bench worker operates the clamp.

The invention relates to the field of steel structure welding, in particular to a machining and welding device for a steel structure bridge prefabricated part. The technical problems that according to an existing welding device, a perforated rib plate and a perforated steel plate cannot be conveniently and rapidly centered and aligned, welded workpieces cannot be conveniently and rapidly discharged, and the working efficiency is low are solved. The machining and welding device for the steel structure bridge prefabricated part comprises a rack, a vertical plate is fixedly connected to the upper portion of the inner wall of the rack, two electric push rods are fixedly connected to the rack, linear groove frames are fixedly connected to telescopic rods of the two electric push rods, and a bearing frame is hinged to the inner wall of the rack. The clamping frame drives the calibration block to move, the calibration block calibrates and positions the perforated steel plate, the aligning frame drives the third balls to move in the direction close to the perforated rib plate, the two sets of third balls enable the perforated rib plate to be perpendicular to the perforated steel plate, the perforated rib plate and the perforated steel plate can be centered and aligned conveniently and rapidly, and the working efficiency is improved.

The utility model provides a tower crane jacking oil cylinder extension detection device, the tower crane jacking oil cylinder extension detection device comprises a first oil cylinder, a detection assembly and a stabilizing assembly, a piston rod of the first oil cylinder is fixedly connected with a first connecting rod, and one end of the first connecting rod is provided with a first positioning frame; the detection assembly is arranged on one side of the first positioning frame, the detection assembly comprises a fixing plate, a supporting block, a movement guide plate, a sliding frame and a connecting block, the fixing plate is fixedly connected to one side of the first positioning frame, and the supporting block is fixedly connected to the top of the fixing plate. The tower crane jacking oil cylinder extension detection device solves the problems that when part of existing jacking oil cylinders conduct jacking operation, real-time detection on the extension length is not convenient, workers cannot find the abnormal condition of extension of the oil cylinders in time, equipment faults are likely to be caused, and safety risks are increased. The tower crane jacking oil cylinder extension detection device solves the problems that in the prior art, when part of jacking oil cylinders conduct jacking operation, the extension length is not convenient to detect in real time, and therefore workers cannot find the abnormal condition of extension of the oil cylinders in time.

The invention relates to a tool for turning a high-speed motor stator spigot and a machining method of the tool, and relates to the technical field of high-speed motor stator machining.The tool comprises a stator mandrel, a tensioning part is integrally formed on the outer wall of the stator mandrel, a stator tensioning sleeve is arranged on the outer wall of the tensioning part in a sleeving mode, and the stator tensioning sleeve comprises a connecting ring and a plurality of tensioning strips; the plurality of tensioning strips are fixedly connected with the connecting ring at one end of the connecting ring, the plurality of tensioning strips are uniformly distributed in the circumferential direction of the connecting ring, the outer walls of the tensioning strips abut against the inner wall of the stator core, the inner walls of the tensioning strips abut against the outer wall of the tensioning part, the outer diameter of the tensioning part is gradually reduced in the axial direction of the tensioning part, and the wall thickness of the tensioning strips is gradually increased in the reducing direction of the outer diameter of the tensioning part. The motor base has the effects of ensuring the coaxiality of the spigots at the two ends of the motor base and the stator core and reducing the production cost.

The utility model belongs to the technical field of corrugated pipe tensile testing, and particularly relates to a corrugated pipe tensile testing device which comprises a support, a driving mechanism mounted on the support and a clamping mechanism mounted on the driving mechanism, and the clamping mechanism comprises a guide rail, an air cylinder, a screw, a nut, a first clamping part and a second clamping part. By arranging the clamping mechanism, the two ends of the corrugated pipe can be placed between the first clamping parts and the second clamping parts of the two sets of moving frames respectively, the inner ring positions of the second clamping parts are attached to the outer walls of the ends of the corrugated pipe, nuts on the screw rods are rotated, the nuts are attached to the outer ring walls of the second clamping parts, and therefore the corrugated pipe can be clamped. At the moment, the air cylinder can be driven to pull the first clamping part to approach the inner wall of the end part of the corrugated pipe, and pressure is applied until the end part of the corrugated pipe is completely clamped by the first clamping part and the second clamping part, so that the placement of the corrugated pipe is completed, a worker can conveniently clamp the end part of the corrugated pipe, and the corrugated pipe clamping device can adapt to corrugated pipes with different sizes.

The external expansion positioning clamping device comprises a shell of a cuboid structure, a first round opening is formed in the outer wall of the top of the shell, a sleeve is fixedly connected to the outer wall of the top of the shell and is of a conical structure, and an auxiliary assembly is slidably installed on the outer wall of the top of the sleeve; and the same piston assembly is arranged on the inner walls of the auxiliary assembly, the sleeve and the shell. According to the positioning and clamping device, the two positioning claws are arranged in the auxiliary assembly, a workpiece is conveniently clamped when the positioning claws are unfolded, meanwhile, a protrusion is arranged at one end of each positioning claw, the workpiece is conveniently pressed, the situation that the workpiece jumps during machining is effectively avoided, and the problem that an existing positioning and clamping device cannot conveniently clamp the workpiece is solved.

The manual clamping jig comprises a workbench and a fixing rod, the fixing rod is arranged at the top of the workbench, a vertical rod is arranged behind the fixing rod, a first connecting rod is arranged on the left side of the interior of the vertical rod, a second connecting rod is arranged on the right side of the interior of the vertical rod, and the second connecting rod is connected with the workbench. The rear portions of the first connecting rod and the second connecting rod are fixedly connected with extending rods, the opposite ends of the two extending rods are each provided with a clamping block, the height of the fixing rod is adjusted firstly, then the positions of the first connecting rod and the second connecting rod in the fixing rod are moved, clamping work is conducted on parts, the clamping force and flexibility are improved, and the clamping efficiency is improved. The adaptability of the jig is improved; the motor is started to drive the threaded rod to operate, the sliding block moves in the sliding groove, moving work of the two clamping blocks is achieved, convenience is brought to automatic operation, numerical values are compared through the ultrasonic generator, the ultrasonic receiver and the scale marks, and convenience is brought to measurement work of parts.

The invention discloses a strain clamp for parallel bunched cables, and aims to solve the problem that in the prior art, due to the fact that the number of parts of a strain clamp is large, assembly of the strain clamp is very troublesome. And when the strain clamp is assembled in the air, the risk that parts fall off easily occurs, and potential safety hazards exist. According to the technical scheme, the clamping device comprises two parallel clamping plates, the two sides of each clamping plate are each provided with two connecting rods, the two connecting rods are arranged in parallel, the two ends of each connecting rod are rotationally connected with the corresponding clamping plate, and the two sides of each clamping plate are each provided with a clamping mechanism; the clamping mechanism is arranged between the two connecting rods on the same side of the clamping plate. According to the strain clamp, the strain clamp of the parallel bunched cable is arranged to be of an integral structure, and the strain clamp does not need to be assembled in advance before being used, so that the strain clamp is very convenient to use; and the first clamping plate and the second clamping plate are always kept parallel, so that the stress is more uniform when the parallel bunched cable is clamped.

This invention belongs to the field of aerospace structural component manufacturing technology, specifically relating to an arc-shaped cap and its integrated bending forming method and application. The integrated bending forming method includes the following steps: S1, blanking to obtain a cap plate blank or cap frame blank; S2, milling to machine the external dimensions and hole positions before bending, obtaining a flat, non-arc semi-finished product; S3, bending, placing the flat semi-finished product between the punch and die of a bending die, and applying pressure to press it into an arc-shaped part with a predetermined curvature; S4, stress-relieving treatment of the bent arc-shaped part to eliminate its internal residual stress; S5, shaping, bending and shaping again to stabilize its curvature shape, obtaining the final arc-shaped cap product. This invention effectively solves the problem of springback during sheet metal bending by introducing a combination of bending die design, graded pressure control, and stress-relieving and shaping processes, ensuring the accuracy of the final product's curvature and external dimensions.

This invention discloses a pipeline gas supply device, a pipeline gas filling method, and a pipeline welding method, relating to the field of welding tool technology. The pipeline gas supply device includes a gas supply pipe, which comprises a hollow gas supply pipe body and a sealing plate located at one end of the gas supply pipe body, with the other end of the gas supply pipe being the gas supply end; a sealing sleeve fitted around the outer circumference of the gas supply pipe; two fixing washers, located at opposite ends of the sealing sleeve; a pushing component located at the gas supply end of the gas supply pipe; and an expansion / contraction component. The pushing component moves towards the sealing plate end of the gas supply pipe, causing the expansion / contraction component to be squeezed by the fixing washers and the sealing plate or the pushing component, achieving a pipeline sealing effect. This device limits the gas filling range of the protective gas to between the two expansion / contraction washers, greatly reducing the amount of gas used for welding, preventing free discharge of the protective gas, enabling quantitative use of the protective gas, and reducing waste. It is applicable to the gas filling of welded bends, long pipes, and irregularly shaped pipelines.

The utility model relates to the technical field of seat angle adjuster machining, in particular to seat angle adjuster laser welding auxiliary clamping equipment which comprises an equipment table, a motor, a connecting ring, a dust hood, a screw rod, an exhaust pipe and a clamping mechanism, the motor is installed at the bottom of the equipment table, and the connecting ring is fixed to the upper surface of the equipment table; according to the auxiliary clamping equipment for laser welding of the seat angle adjustor, a core disc of the seat angle adjustor is effectively clamped, the core disc is controlled to rotate slowly in the welding process, the welding area is automatically adjusted, the welding efficiency is improved, and the welding quality is improved. Smoke dust generated by laser welding is effectively absorbed, the health problem caused by heavy metal smoke dust is reduced, in the clamping and welding process, the height of the clamping base can be adjusted, clamping is facilitated, meanwhile, the distance between the dust collection device and a welding area is effectively controlled, and therefore the dust collection effect is guaranteed.

The utility model relates to the technical field of welding, in particular to a tool special for rail machining of an automatic circular tube welding machine. The device comprises a rotary table, the rotary table comprises an output shaft, the side, away from the rotary table, of the output shaft is fixedly connected with a vertically-arranged tool connecting plate, a tool plate is arranged at the position, close to the edge, of the upper portion of the tool connecting plate, the upper surface of the tool plate is in an arc shape, and an arc-shaped part mounting position is arranged on the outer surface of the tool plate; pressing structures used for pressing the parts are arranged on the two sides of the part installation position. The device solves the problems that clamping is inconvenient, and cost is high.

The utility model relates to the technical field of plastic spoons, in particular to a medical medicine test sampling plastic spoon which comprises a storage sleeve and a pen clip, a telescopic assembly is arranged at the bottom end of the storage sleeve and comprises a telescopic rod and a fixing bolt, and a spoon body is arranged at the bottom end of the telescopic rod; an antifouling sleeve is arranged at the bottom of the storage sleeve corresponding to the periphery of the telescopic rod, a first thread is arranged at the bottom end of the storage sleeve at the periphery of the telescopic rod, and a second thread is arranged at the top of the inner wall of the antifouling sleeve corresponding to the first thread; the anti-fouling sleeve is conveniently disassembled and assembled at the bottom of the storage sleeve through the first thread and the anti-fouling sleeve encloses and covers the spoon body at the bottom of the telescopic rod on the inner side of the storage sleeve, so that the problem that the spoon body is in a completely open state when not in use and is easy to pollute is solved, and the cleanliness during use is ensured.

The utility model discloses a loading opening end frame machining clamp which comprises a bottom plate, a clamping device and a clamping device. The guide template is fixedly arranged on the assembly plane and comprises three vertical planes and a first horizontal plane, the first vertical plane is parallel to the second vertical plane, the third vertical plane is perpendicular to the first vertical plane and the second vertical plane, and the first horizontal plane is perpendicular to the three vertical planes; the equal-height block is attached and fixed to the first vertical face, the equal-height block comprises a second horizontal face flush with the first horizontal face and a fourth vertical face parallel to the first vertical face, and the fourth vertical face upwards protrudes out of the second horizontal face; the positioning block is attached and fixed to the third vertical plane, the positioning block comprises a third horizontal plane flush with the first horizontal plane and a fifth vertical plane parallel to the third vertical plane, and the fifth vertical plane upwards protrudes out of the third horizontal plane; wherein the fourth vertical face is attached to one side edge of the end frame, and the fifth vertical face is attached to the other side edge of the end frame.

This utility model discloses a cable winding device for cable production, specifically relating to the field of cable production technology. It includes a winding base with a supporting side plate on one side of its upper end. A movable base is located on the outer side of the upper end of the winding base. Positioning components are located on both sides of the upper end of the movable base. First hydraulic telescopic rods are located on the outer sides of both ends of the winding base. A supporting push plate is located inside the winding base via the output shaft of the first hydraulic telescopic rod. In actual use, the corresponding arrangement of the first hydraulic telescopic rod, positioning components, supporting push plate, and movable base allows for easy alignment of both ends of the cable winding frame with the positioning components. An external control device drives the first hydraulic telescopic rod, which, through its output shaft, moves the supporting push plate to one side. As the supporting push plate moves, it pushes against the movable base, causing it to move upwards and lifting the cable winding frame at the upper end of the movable base, thus facilitating auxiliary installation of the cable winding frame.

The pipeline surrounding type clamping tool comprises a supporting plate, the top of the supporting plate is fixedly connected with an arc-shaped supporting plate and a machine box, the side, away from the machine box, of the top of the arc-shaped supporting plate is fixedly connected with a limiting plate, a containing groove is formed in the top of the arc-shaped supporting plate, and the limiting plate is fixedly connected with the side, away from the machine box, of the arc-shaped supporting plate. A gear ring is arranged in the middle of the containing groove, a first protection pad is fixedly connected to one side of the gear ring, and limiting blocks are fixedly connected to the two ends of the gear ring. Firstly, a motor is started to control a gear to drive a gear ring to rotate, the gear ring can be moved to the top of an arc-shaped supporting plate from an inner opening of a containing groove, a second electric push rod is started to control an extrusion block to fix the gear ring, then a first electric push rod is started to control an extrusion plate to extrude a threaded pipe, and the threaded pipe is fixed through cooperation of the gear ring. And when a plurality of clamping tools are used, the clamping tools do not need to be manually and sequentially rotated to control clamping, and the working efficiency is improved.

The utility model belongs to the field of sand blasting devices, and particularly relates to a sand blasting device for metal target material processing, which comprises a box seat, a flow guide cover is fixedly mounted in the box seat, a collecting box is slidably connected in the box seat, a limiting mechanism is arranged at the bottom of the inner side of the box seat, and a supporting rod frame is fixedly connected to the bottom of the inner side of the flow guide cover. A connecting base is installed in the supporting rod frame through a damping shaft, a clamping plate is fixedly connected to the upper end of the connecting base, and a guide rod frame is fixedly connected to the lower end of the clamping plate. The limiting mechanism is additionally arranged in the box base, the universal wheels are additionally arranged on the collecting box, the guide strip is additionally arranged on the flow guide cover, the collecting box can be stably installed in the box base through the guide strip and the limiting frame, and then when the collecting box needs to be taken, only the limiting frame needs to be separated from the collecting box, and the collecting box can be conveniently taken. And then the collecting box can be moved through the universal wheels, so that the collecting box is more convenient to carry.

The utility model provides a tarpaulin welding supporting table which comprises a body, containing grooves are formed in the tops of the two ends of the body, and supporting frames are arranged on the two sides of the two ends of the body. The guide column is horizontally and rotationally arranged between the two opposite supporting frames, and the guide column is located in the containing groove; the driving column is located above one guide column, the driving column and the guide column form a clamping space, one end of the driving column is provided with a Z-shaped driving handle, and the driving handle is used for rotating the driving column. According to the supporting table for tarpaulin welding, the using function effect is better.

The utility model discloses an oscillation device for detection pretreatment of pesticide residues of traditional Chinese medicinal materials, and belongs to the technical field of food detection equipment. The oscillation device comprises a main machine and an oscillation disc arranged on the main machine, and further comprises a fixing assembly which comprises a fixing rod which can be in threaded connection with connecting holes corresponding to the two ends of the main machine and located on the outer side of the oscillation disc; mounting pieces which can be connected with the fixing rods are arranged at the two ends of the fixing frame; the fixing holes are transversely and longitudinally formed in the fixing frame at intervals; the fixing frame is positioned above the oscillation disc; the vertical projection of the fixing hole is located in the area range of the oscillation disc. The fixing rod can be installed in the connecting hole, the fixing frame is installed on the fixing rod through the installing piece, the fixing hole is used for containing a sample container, the sample container can be supported and limited in the oscillation processing process, the container is prevented from shaking and falling out of the pipe frame, and the situation that sample powder adheres to the inner wall of the container due to the fact that the oscillation amplitude is too large can be avoided; the extraction effect is influenced.

The clamp for enhancing the turning rigidity of the cage type part comprises a chuck, one side of the chuck is fixedly connected with a positioning check block, the side, away from the chuck, of the positioning check block is fixedly connected with a limiting block, and a base plate is arranged on one side of the chuck and located on the outer side of the positioning check block in a sliding mode. The side, away from the chuck, of the base plate is provided with a clamping jaw, and the surface of the clamping jaw is in threaded connection with a bolt. According to the clamp for enhancing the turning rigidity of the cage type part, the positioning check blocks and the clamping jaws are adopted for positioning and clamping the workpiece in the axial direction and the radial direction at the same time in the new clamping process, in the clamping process, the workpiece is automatically corrected, it is guaranteed that the two ends of the workpiece are concentric, meanwhile, the clamping positions of the clamping jaws are very close to threads, and the cutting rigidity during thread turning is guaranteed; therefore, the problem of tool vibration during thread turning is effectively avoided, the qualified rate of products is increased, and tool loss is reduced.

The utility model discloses butt joint equipment for round pipe welding, and relates to the technical field of welding equipment. Comprising a bottom plate, a rack is fixedly arranged in the middle of the bottom plate in the length direction of the bottom plate, five moving parts are movably arranged on the rack in an engaged mode, fixed rotating parts are symmetrically arranged on the upper portions of the moving parts arranged at the two ends of the rack, and a supporting part is fixedly arranged on the upper portion of the moving part arranged between the fixed rotating parts. The lifting welding part is arranged in the middle of one side of the bottom plate in the length direction, the supporting part can adjust the height of a butt-joint steel pipe, a chuck of the fixed rotating part can conveniently clamp and fix the tail end of the steel pipe, the fixed rotating part can be in butt joint with the front end of the steel pipe through opposite movement, and surrounding welding of the butt-joint position of the butt-joint steel pipe is achieved through rotation.

The utility model relates to the technical field of machining auxiliary equipment, in particular to a shaft part nitriding tool which comprises a nitriding furnace main body, a first air cylinder is arranged on one side of the nitriding furnace main body, a top cover is arranged above the nitriding furnace main body, and a fixing plate is fixedly installed on a side edge plate body of the top cover. The tail end of a telescopic shaft of the first air cylinder is detachably installed on the fixing plate, a driving motor is fixedly installed at the center of the top face of the top cover, a rectangular rod is installed at the tail end of an output shaft of the driving motor, a second air cylinder is arranged at the bottom of the nitriding furnace body, and a telescopic shaft of the second air cylinder penetrates into the nitriding furnace body and is detachably provided with a supporting base. And a convex column is rotationally connected to the center position of the supporting base, a mesh cylinder is installed at the top end of the convex column, a center column is fixedly installed at the center position of the mesh cylinder, a rectangular insertion hole is formed in the center column, and the rectangular rod is matched with the rectangular insertion hole in an inserted mode. The dynamic nitriding device is convenient for dynamic nitriding operation and is beneficial to improving nitriding quality.

The utility model discloses a kind of U-shaped cylindrical pin bending tool, belong to the technical field of machining, comprising: the bottom plate of being made with sliding slot and center through-hole, the base of being installed in bottom plate bottom and inside installation has spring, the shell fixed on bottom plate, the inner shell fixed in the left and right sides in shell interior, left and right platform block rotationally connected in two inner shell interiors, front and rear push block installed in shell front and rear side, recess die installed between left and right platform block, and male die with recess die die closing;The part to be formed is fixed in platform block top, adjust the interval of two inner shells and front and rear push block, male die presses down recess die, recess die promotes left and right platform block rotation and carries out bending, after bending, spring rebounds and pops out forming part.The utility model structure scientific and reasonable, use safe and convenient.