86results about How to "Reduce setup time" patented technology

The invention discloses a tight-lock coupler intelligent tensile testing machine and a testing method thereof, and belongs to the technical field of tight-lock coupler test.The tight-lock coupler intelligent tensile testing machine comprises a mounting bottom plate and an electric control cabinet, and a support for supporting a tight-lock coupler to be detected is mounted on the surface of the mounting bottom plate; a tensile connecting frame for connecting the tight-lock coupler is mounted on the surface of the bottom plate on one side of the support, an integrated design of'tensile force detection and visual detection 'is innovatively adopted, mechanical parameter acquisition and visual deformation observation are combined, traditional mechanical data such as tensile force and displacement are obtained, and visual characteristics such as fine deformation and crack initiation are captured; precise synchronization of pulling force application, displacement collection and camera shooting is achieved through the synchronous controller, the real-time corresponding relation of pulling force-displacement-visual deformation is established, the problems that an existing device is single in detection dimension and poor in data relevance are solved, and the potential quality hazard checking capacity and the persuasion of a detection result are improved.

The high-strength three-way welding connection structure for the hydrogen conveying pipeline belongs to the field of three-way welding and comprises a base, two sliding grooves are formed in the upper surface of the base, first motors are fixed to the left side and the right side of the base correspondingly, and output shafts of the first motors penetrate into the sliding grooves and are fixedly connected with first screw rods; vertical frames are in threaded connection with the outer surfaces of the first screws, second motors are fixed to the opposite sides of the two vertical frames, and the opposite ends of output shafts of the two second motors penetrate to the opposite sides of the two vertical frames correspondingly. Supporting is provided from the inner wall of the three-way pipe through the supporting rollers, the transverse pipe positioning mechanism applies clamping force from the outer wall through the clamping blocks, a double-positioning structure of inner supporting and outer clamping is formed, it is ensured that three ports of the three-way pipe are strictly coaxial, and welding deflection is avoided; the clamping force can be automatically adjusted according to the small difference of the pipe diameters of the three-way pipes, the three-way pipes of different specifications can be rapidly matched through linear driving of the sliding frame and the air cylinder, and the universality is remarkably improved.

Frame reinforcing integrated type counter-pressure casting equipment comprises counter-pressure casting equipment, a left reinforcing frame, a right reinforcing frame and a connecting flange base, the counter-pressure casting equipment is formed by connecting a bottom plate, a middle plate, a movable plate and a top plate together through four large bars, a crucible furnace is located between the bottom plate and the middle plate, and a mold is located between the middle plate and the movable plate. The movable plate is connected to an oil cylinder on the top plate, and mold opening and closing are achieved through stretching and retracting of the oil cylinder. The left reinforcing frame and the right reinforcing frame are respectively connected with a connecting flange seat, and the connecting flange seat is fixed on a bottom plate and a top plate of the counter-pressure casting equipment. The rigidity of the device can be improved, shaking is eliminated, and the problems that a casting is pulled, a copper sleeve of a device platen is abraded aggravated, and a large bar lock nut is prone to loosening are solved. Meanwhile, complete standardized design is achieved, final assembly debugging is completed before delivery, the installation and debugging time is greatly shortened, and the delivery cost is saved.

The utility model discloses a boring tool for an inner spherical surface of a flange hole, and belongs to the field of machining. A boring tool for the inner spherical surface of a flange hole comprises a boring tool rod and a molded surface boring tool. The boring cutter rod comprises a conical boring cutter rod handle and a rotary cutter rod connected with the boring cutter rod handle, a screw hole matched with the blind rivet is formed in the end of the boring cutter rod handle, a square hole used for installing the molded surface boring cutter is formed in the rotary cutter rod, a bolt used for fastening the molded surface boring cutter is arranged on one side of the square hole, and a threaded hole matched with the threaded hole is formed in the other side of the square hole. The profile boring cutter is specially designed in structure according to the inner spherical surface of a flange hole. Complex machining of the inner spherical surface of the flange hole can be completed at a time, multi-procedure errors are avoided, the size and shape precision is guaranteed, the requirement of a drawing is met, traditional step-by-step machining can be replaced, the tool changing frequency and the clamping time are reduced, efficiency is greatly improved, and production cost is reduced.

The utility model provides a small line cutting device with gas protection cutting function, include: welding platform, welding platform top one end fixedly connected with first locating seat, welding platform top other end slidingly connected with second locating seat, the top of first locating seat and second locating seat all are rotatably connected with workpiece platform through steering assembly, the top of welding platform is welded with L type support. The utility model increases gas tank and high pressure gas nozzle, utilizes nitrogen protection, prevents workpiece oxidation, takes away heat and reduces heat influence area, improves working environment, cutting seat slides along cross track, satisfies various cutting demand, according to workpiece specification size, selects only first locating seat and carries out single -sided fixed, or first locating seat and second locating seat cooperate and fix, and conducting electricity clamp can fix circular or regular workpiece with high and low difference surface, workpiece platform can adjust angle in multiple directions with the help of steering assembly, satisfies complex profile or inclined plane workpiece cutting demand.

This utility model discloses a center hole grinding machine for gear processing, relating to the technical field of gear processing equipment. The utility model includes a lathe body, with protruding plates fixedly connected to both sides of the lathe body. A movable seat is slidably connected to the top surface of the protruding plate, and a bracket is fixedly connected to the top surface of the movable seat. A fixing component is provided on one side of the bracket, and the fixing component includes a cavity. A protruding shell is fixedly connected to the side wall of the cavity, and a through-hole is provided in the middle of the side wall of the cavity. A gear ring is rotatably connected to the inner side wall of the cavity. A motor is provided outside the cavity, and a transmission gear is fixedly connected to the output shaft end of the motor. This utility model facilitates the centering and clamping of gears of different specifications within a certain range, so that the axis of the gear corresponds to the grinding head on the lathe body, thereby achieving the purpose of automatically aligning the gear to the center, reducing single-piece clamping time, and improving production efficiency.

The invention discloses a line-shaped shaft multi-procedure combined machining device, and relates to the technical field of machine tool parts, the line-shaped shaft multi-procedure combined machining device comprises a positioning block, a pressing mechanism, a positioning plate and a cutter, the positioning block is provided with a positioning tool, and the positioning block is operably installed on a chuck; the hold-down mechanism and the positioning block are oppositely arranged, the hold-down mechanism and the positioning block operably clamp the linear shaft in the radial direction, and the hold-down mechanism and the chuck rotate synchronously; the positioning plates are symmetrically and fixedly arranged on the side face of the positioning block and operably clamp the linear shaft in the axial direction. The positioning plates are symmetrically fixed to the side faces of the positioning blocks, axial movement is effectively limited, and the clamping stability is improved; by rotating the positioning block by a certain angle, only a cutter needs to be replaced in the middle, the linear shaft does not need to be repositioned, different positions on the linear shaft can be machined, repeated positioning errors caused by multiple times of clamping in traditional machining are avoided, and machining precision and efficiency are remarkably improved.

The utility model discloses an automatic processing clamping device of adaptation to multiple size workpieces, including base, two groups of clamping mechanism of symmetrical setting on base, drive mechanism and adjusting mechanism for adjusting the initial interval of clamping mechanism that drive clamping mechanism relative close or far apart, still be equipped with horizontal guide rail on the base, two groups clamping mechanism are slidably connected in the both ends of horizontal guide rail respectively, clamping mechanism includes sliding seat, clamping jaw subassembly and be equipped with the elastic buffer pad in the one side of sliding seat. Can take into account multiple size adaptability, high accuracy positioning, stable clamping and the novel clamping device of automation control, to solve the technical problems such as the adjustment of existing technology complicated, poor universality, clamping reliability is low, satisfy modern automation processing to the demand of high efficiency, precision, stability.

The utility model relates to mechanical processing auxiliary equipment technical field especially relates to a novel flat mouth tongs multi -clamping tool, its technical scheme includes: tool seat, the tool seat includes the chassis, the inside of chassis is provided with the side plate, one side of the chassis is provided with the fixed forceps, one side of the side plate is provided with the adjusting guide rail, is provided with two groups of movable forceps on the adjusting guide rail, the bottom of the chassis top side is provided with the backing pad, one end away from the fixed forceps on the chassis is provided with the clamping assembly. The utility model discloses through the setting of adjusting guide rail can realize movable forceps mouth seat's movement to the workpiece is carried out clamping and loosening operation, through the fixed forceps, clamping assembly and multiple movable forceps intercoordination's setting can realize to multiple workpieces's simultaneous clamping fixed, through movable forceps both sides with the fixed forceps one side recessed groove's setting guarantees the stability of workpiece in clamping process, compared with traditional flat mouth tongs, has improved the processing efficiency greatly, has reduced workpiece mounting and dismounting's time.

The utility model relates to the field of jig processing, and discloses an accurate positioning and clamping mechanism for jig processing, which comprises a base, the top of the base is slidably connected with a workbench, the top of the workbench is rotatably connected with a gear, the outer wall of the gear is meshed with a plurality of racks, the outer walls of a plurality of sliding blocks are slidably connected with an I-shaped rail, and the I-shaped rail is rotatably connected with the workbench. The tops of the multiple sliding blocks are fixedly connected with fixing plates, the inner walls of the multiple fixing plates are fixedly connected with fixing cylinders, the inner walls of the multiple fixing cylinders are slidably connected with sliding rods, the inner walls of the multiple fixing cylinders are fixedly connected with rubber pads, and the outer walls of the multiple rubber pads are provided with springs; a cleaning assembly is arranged on the top of the workbench. According to the utility model, the slide block is driven by the motor to fixedly clamp the workpiece, and the plurality of springs can adapt to the workpieces in different shapes, so that the chuck for the workpieces in different shapes does not need to be customized, the clamping time is reduced, the clamping force can be uniformly dispersed, and the workpiece deformation caused by stress concentration is avoided.

This utility model discloses a multi-station synchronous clamping device for CNC machining, including a base. A pusher roller is fixedly connected to the top of the base. A drive motor is installed inside the base. The output shaft of the drive motor is fixedly connected to a threaded rod via a coupling. A limit rail is threadedly connected to the outer wall of the threaded rod. A base is slidably mounted on the top of the limit rail. A clamping assembly is mounted on the top of the base. An angle adjustment assembly is mounted on the top of the clamping assembly. This utility model provides a multi-station synchronous clamping device for CNC machining. By adjusting the steering shaft in conjunction with the pointer on the bushing and the angle scale line on the steering shaft, the rotation angle of the steering clamping block can be precisely controlled to meet the machining requirements of different workpiece angles. It eliminates the need for re-disassembly and clamping, making operation convenient. After adjustment, the adjusting steering shaft can be fixed by locking bolts to ensure the stability of the angle during machining.

The utility model discloses a kind of vacuum coating machine workpiece rotation positioning devices, including rotating lever and the disc of fixed in the outer wall of rotating lever, the upper surface of the disc is provided with several groups of base that can autorotate, the top of the base is provided with the expansion body that can be inserted into workpiece, the lower of the disc is provided with bottom plate, the lower of the bottom plate is provided with lifting structure that drives bottom plate lift, the top of the bottom plate is provided with expansion structure that can drive expansion body expansion, the outer wall of the rotating lever is provided with rotating structure that drives base rotation;The setting of the utility model expansion structure, so that only one lifting drive operation is needed, all jack can be driven to insert inside corresponding expansion body simultaneously, jack is synchronous to open all expansion body's arc plate in ascending process, to complete the internal expansion positioning of all workpiece on expansion body in one time. Compared with the conventional workpiece fixed mode one by one, can shorten clamping time.

This utility model relates to the technical field of welding construction platforms, specifically to a construction platform for welding the outer side of steel pipes on steep slopes. It includes an operating platform, a support mechanism, and connecting components. The top surface of the operating platform is constructed as an operating surface. The support mechanism includes at least two lattice columns, and the connecting components include several anchor rods. The anchor rods can provide a limiting connection to the bottom end of the lattice columns. The operating platform provides an operating surface for welding the outer circumferential seam of the pipe. Workers can stand on the operating surface at the top of the platform to perform welding operations at corresponding positions. Simultaneously, the support mechanism provides stable support for the operating platform. The support mechanism can be anchored to the slope surface by multiple anchor rods. The anchor rods can be fixed by drilling and implanting, utilizing the anchoring force of the deep soil and rock mass of the slope to fix the lattice columns. This helps reduce the amount of slope excavation and minimizes the impact of the construction platform erection on construction costs and schedule.

The invention relates to the technical field of electronic equipment control, in particular to a method for automatically distributing charging module addresses, which is applied to equipment comprising a main control unit, a plurality of charging modules, two independent CAN buses, a power supply unit, an alternating current output relay and a fault prompt unit. Comprising the following steps of demand judgment and initial communication detection, hardware state detection and power-off verification, parallelization setting of module addresses one by one and final verification and process ending. Before an address setting process is started, through initial communication detection and hardware state detection, potential problems such as CAN bus communication abnormity, power supply fluctuation, alternating current output relay faults and module power-off incapability are checked in advance, once faults are found, accurate prompting is carried out through a multi-color LED lamp, an operator can conveniently and rapidly position and solve the problems before address configuration, and the operation efficiency is improved. Therefore, flow interruption or module damage caused by hardware faults in the setting process is avoided, the invalid debugging time is shortened, and the loss risk in the equipment debugging stage is reduced.

This application relates to the field of machining technology, and in particular to a clamping fixture for a centrifugal compressor guide vane. The fixture includes a base plate, a drive device connected to the center of the base plate, and several equal-height blocks and displacement drive components arranged at intervals extending outwards from the drive device. The output end of the drive device simultaneously engages with the input ends of the multiple displacement drive components. Each displacement drive component includes a screw, one end of which is coaxially connected to a transmission unit, and the other end is connected to the base plate via a support unit. A slider is helically connected to the top of the screw, and its bottom is slidably connected to a slide rail. Several limiting parts are provided on the top of the slider along the screw axial direction, one of which is connected to a chuck. This application improves the versatility of the fixture by using equal-height blocks of varying lengths in conjunction with adjustable-position chucks. Furthermore, each chuck can synchronously move and clamp the workpiece under the action of the drive device, offering advantages such as compact structure, stable clamping, and high reliability.

The utility model belongs to the technical field of elbow welding devices, and particularly relates to a large-diameter elbow welding device which comprises an equipment main frame, an angle adjusting fixing piece is fixedly installed in the middle of one end of the equipment main frame, and an elbow fixing adjusting plate is installed in the angle adjusting fixing piece in an up-down sliding mode. The other end of the bent pipe fixing and adjusting plate is installed in the equipment main frame in a left-right sliding mode, the bent pipe fixing and adjusting plate is in threaded connection to a first transmission screw, one end of the first transmission screw is rotationally connected to an angle adjusting and fixing piece, and the other end of the first transmission screw is rotationally installed on the equipment main frame. According to the large-caliber elbow welding device, angle adjustment of the elbow fixing and adjusting plate is cooperated with height adjustment of the elbow supporting piece, so that the large-caliber elbow welding device is adaptive to welding of large-caliber elbows with different angles, tools do not need to be replaced, and universality is high.

The utility model discloses a kind of polishing devices for air pipe engraving, it is related to air pipe processing technical field, including workbench, the top of workbench is installed with board, the upper of board is provided with polishing roller, the side of polishing roller is provided with adjusting assembly for adjusting its height, the outside of board is provided with clamping assembly for fixing it;The adjusting assembly includes sliding seat and first adjusting plate sliding in the inner wall of workbench, and the side of sliding seat is rotatably connected with one end of polishing roller, the utility model has the beneficial effects that: by setting adjusting assembly, the height of polishing roller can be adjusted, polishing roller height can be flexibly adjusted, accurately match different thickness board, realize uniform polishing, avoid excessive or insufficient polishing, height can be adjusted in time according to polishing roller wear, ensure stable working performance, prolong its service life, reduce maintenance cost.

The utility model relates to a positioning device for forge piece finish machining. Comprising a supporting bottom plate used for supporting the forge piece, a pressing device used for pressing the forge piece and a moving device used for adjusting the pressing device. The two ends of the top of the supporting bottom plate are each provided with a plurality of moving devices arranged in a linear array. A pressing device is mounted at the top of the moving end of each group of moving device; the acting end of each pressing device faces the center face of the supporting bottom plate. The positioning device solves the technical problems that in the prior art, a positioning device for forge piece finish machining is difficult to adapt to the multi-direction stress requirement of special-shaped forge pieces, deviation or deformation of workpieces is easily caused, meanwhile, a buffering structure (such as a single spring) is simple, and multi-axis synchronism is poor.

The utility model provides a machine tool chuck positioning device, which belongs to the technical field of chuck positioning, and comprises a shell, the outer wall of the shell is slidably connected with uniformly distributed movable clamping jaws, the inner walls of the movable clamping jaws are fixedly connected with uniformly distributed limiting plates, the outer wall of the shell is rotatably connected with uniformly distributed gyro gears, and the gyro gears are rotatably connected with the shell. The movable clamping jaw is connected with a clamping jaw body through a quick connecting assembly, the outer wall of the shell is fixedly connected with evenly-distributed connecting frames through bolts, and the limiting anti-shaking assembly comprises a concave frame fixedly connected to the top walls of the connecting frames. According to the utility model, the movable clamping jaw is connected with the clamping jaw body through the quick connecting assembly, so that when a workpiece is replaced and clamped, an operator can quickly replace the adaptive clamping jaw body without complicated operation and long-time adjustment, the clamping time is greatly shortened, and the machining efficiency and universality of a machine tool are remarkably improved; and diversified production requirements are met.

The utility model provides a cold plate friction welding clamp which comprises a rectangular frame and a rectangular plate fixedly arranged at the top end of the rectangular frame, a plurality of sets of pressing mechanisms used for pressing a water cooling plate are symmetrically arranged on the rectangular plate in the length direction of the rectangular plate, a plurality of strip holes are formed in the rectangular plate in the length direction of the rectangular plate, and at least one padding mechanism is arranged on each strip hole. When the first inner threaded pipe is rotated, the screw cannot rotate due to the fact that the guide rod is clamped in the blind groove of the inner column and can only move axially, and the axial movement of the screw pushes or jacks up the bottom wall of the longitudinal blind groove of the cushion column through the limiting rod at the end of the screw. Therefore, the final supporting height of the cushion column is accurately and finely adjusted. After the rectangular plate is adjusted in place, the pressing mechanism on the rectangular plate presses downwards, the water-cooling plate is firmly pressed on the cushion column supporting face matched with the thickness of the water-cooling plate, friction welding is carried out, the cushion column supporting face and the pressing mechanism act synergistically, the water-cooling plate can be firmly fixed, and the welding deformation risk is reduced.

The utility model discloses welding equipment for ship part repair, and relates to the technical field of welding equipment. Comprising a mounting frame, the mounting frame is provided with a mounting mechanism used for ship part repairing, machining and welding, the mounting mechanism comprises a turnover assembly, the turnover assembly comprises a supporting shaft rotationally connected with the interior of the mounting frame, a machining platform is fixed to one end of the supporting shaft, and a mounting support connected through a pushing assembly is arranged on the outer wall of the machining platform; the machining platform rotates on the installation frame through the supporting shaft, meanwhile, the adjusting plate fixed to the outer wall of the supporting shaft rotates to the other set of locking supports, locking is carried out through screws, welding work on the other face of a part is achieved, the part does not need to be clamped again, the clamping time is saved, and the machining efficiency is improved. Therefore, the overall welding work efficiency is improved, double-face welding is achieved through rotation, errors possibly caused by re-clamping and re-positioning are avoided, and the welding strength is improved.

This utility model belongs to the technical field of diamond processing equipment, specifically relating to a multi-wheel superhard tool grinding machine, including a bed, a grinding mechanism, and a clamping mechanism. The clamping mechanism includes a workpiece table and a tool holder, with the tool holder mounted on the workpiece table. The workpiece table drives the tool holder to move, and the tool holder clamps the tool to be processed. The grinding mechanism is slidably connected to the bed and includes a base and multiple grinding heads. This multi-wheel superhard tool grinding machine, through its clamping mechanism, can drive the tool to perform horizontal and rotary movements. Through the cooperation of the grinding mechanism and the clamping mechanism, grinding can be performed on the tool at multiple angles, achieving both fine and rough grinding. It requires only one loading per processing cycle, improving processing efficiency.

The utility model discloses a kind of hard alloy cutting edge welding positioning devices for superhard drill bit, including base, driving motor, positive and negative toothed bar, sliding block, U-shaped support, gear disc, circular ring, bolt, rubber pad and angle adjusting mechanism etc., angle adjusting mechanism contains support rod, fixed disc, limit hole, rotating shaft, gear column, bolt etc..Through driving motor drives positive and negative toothed bar, make sliding block move along sliding slot, adjust two circular ring spacing, rotate bolt, let rubber pad clamping cutting edge, rotate handle, through gear column and gear disc meshing adjustment angle, bolt is inserted into limit hole locking, the above structure has realized the accurate positioning of different specifications cutting edge, firm clamping and angle adjustment, improve welding quality and efficiency, reduce cost.

The utility model discloses a traction sheave seat processing tool, which relates to the technical field of traction sheave seat processing tools, and comprises a base, an adjusting groove is arranged at the top of the base, a plurality of adjusting screws are arranged on the inner side wall of the adjusting groove, a slider is sleeved on the rod wall of each adjusting screw in a threaded manner, the slider is slidably arranged in the adjusting groove, and a support block is fixedly arranged at the top of the slider. A guide block is fixedly arranged at the upper end of the side portion of the supporting block, a clamping block is arranged outside the guide block in a sliding and sleeving mode, a guide hole matched with the guide block to slide is formed in the clamping block, an elastic telescopic rod is fixedly arranged between the guide block and the inner wall of the guide hole, and a synchronous driving mechanism is arranged between the multiple adjusting screw rods; the synchronous driving mechanism is used for driving the multiple adjusting screw rods to rotate synchronously. The clamping range of the tool can be adjusted according to the specification of the traction sheave base, the traction sheave base can be conveniently, rapidly and stably clamped and fixed, and the stability of the traction sheave base in the machining process is guaranteed.

The utility model provides a kind of inclined roof electro discharge machining's jig, for assisting inclined roof and rear mould kernel tight fit, inclined roof includes inclined roof pole and pull rod, and one end of pull rod is connected with the joint of inclined roof pole, and the other end of pull rod is provided with anti-drop part, and anti-drop part has a bonding surface, including support mechanism and tight fit mechanism, support mechanism includes bottom plate and support column, and support column is fixed on the upper surface of bottom plate and is used to support and fix rear mould kernel, and the upper surface of bottom plate is provided with pre-positioning structure for positioning pull rod;Tight fit mechanism includes pressing plate and height-adjusting bolt, and pressing plate is detachably arranged above bottom plate and can be controlled to approach or away from bottom plate by height-adjusting bolt, and first through-hole, which can be passed through by pull rod, is formed through pressing plate, and pressing plate is used to compress pull rod, and the lower surface of pressing plate is concavely provided with positioning groove for positioning pull rod and is communicated with first through-hole, and positioning groove has positioning surface matched with bonding surface.

The application belongs to the technical field of coating processing, and particularly relates to a composite coating equipment for surface protection of electric power fittings. The existing workpiece clamping device is too simple, is not suitable for high-precision machining in conceptual design, affects the coating effect, and is complicated in operation every time the workpiece is taken and placed, which is not conducive to improving the machining speed. The present application provides the following scheme, which comprises a first shell, a second shell is rotatably arranged on one side of the first shell, and two groups of magnetron sputtering and ion plating for coating the extension pipe are arranged on the first shell. In the application, the placing rack is detachably arranged with the base, and is used in cooperation with the vehicle body, so that the extension pipe can be clamped outside the first shell, and the first rotating shaft can be lifted and moved by pulling the L-shaped rotating plate, so that all the extension pipes can be fixed at the same time, the clamping is convenient, and the placing rack can be recycled, thereby improving the coating efficiency.

The utility model provides a large-specification stainless steel pipe fitting outer circle machining tool which comprises a lead screw, a fixed end cover and a locking nut. Central holes are formed in two ends of the screw rod body; the length of the lead screw body is larger than the axial length of the workpiece, and the two ends of the lead screw body extend out of the two ends of the workpiece. The two ends of the workpiece are concentrically positioned and adaptively provided with the fixed end covers, end cover center holes formed in the fixed end covers and the lead screw are concentrically positioned and adaptively installed, the end cover center holes transfer the center of the workpiece to the centers of the fixed end covers, and the outer threads at the two ends of the lead screw are screwed and adaptively provided with the locking nuts which clamp the fixed end covers of the workpiece. Therefore, the workpiece and the lead screw are concentrically locked, fastened and connected into a whole. According to the utility model, the technical problem that a large-specification stainless steel pipe fitting workpiece cannot be clamped and machined on an ME1332A cylindrical grinding machine at high precision is solved, the machining precision grade can reach IT5 and IT7, the surface roughness is less than 0.2 mu m, and high-precision, high-efficiency and low-cost machining of the outer circle of the large-specification stainless steel pipe fitting workpiece is realized.

The utility model discloses a quenching device for heat treatment of die steel, which comprises a box body, a quenching component and a cooling component are respectively arranged above and on one side of the box body, round holes are formed in two sides of the box body, rotating rods are arranged in the two round holes, clamping components are arranged at the ends, close to each other, of the two rotating rods, and the clamping components are arranged on the two sides of the box body. The die steel is placed between the two clamping plates, an electric push rod and the clamping plates are started to quickly complete clamping, when the die steel needs to be overturned, a motor is started, a first bevel gear drives a second bevel gear, a linkage rod is made to rotate, the rotating rods are driven by a belt to overturn the die steel, and the die steel can be overturned through the belt. Compared with a traditional tedious process of firstly disassembling, overturning and re-clamping, clamping time consumption can be greatly reduced, positioning deviation caused by frequent clamping is eliminated, it is ensured that different operators can achieve stable clamping and overturning, and quenching uniformity and product quality are improved.

This utility model discloses a machining fixture for the main boom of an aerial work platform, comprising: a machine tool worktable and an end positioning and clamping device, a rotary clamping device, and a tail-side pushing and clamping device mounted on the machine tool worktable. The end positioning and clamping device, the rotary clamping device, and the tail-side pushing and clamping device are arranged sequentially at the front, middle, and rear of the machine tool worktable, and the three can automatically and collaboratively clamp the main boom of the aerial work platform. This application achieves automatic positioning and multi-point collaborative clamping of the main boom workpiece, eliminating positioning errors caused by manual operation. The hydraulic drive system ensures synchronous operation of each clamping device, shortening the clamping preparation time. The adaptive adjustment mechanism is compatible with workpieces of different specifications, reducing the number of tooling changes. The composite clamping method disperses contact stress, preventing clamping deformation of thin-walled structural parts. The multi-directional constraint mechanism effectively suppresses machining vibration and improves the positional accuracy of hole machining.