148results about How to "Avoid local deformation" patented technology

The invention relates to the technical field of remanufacturing, in particular to a 1Cr17Ni3 gear pump casting shell end face superficial crack damage repairing method which comprises the steps that cleaning is conducted, and defect positions are determined; marking the defect position, then extending in a polyline form to form two rings, and connecting the two rings by using a line segment; polishing to form an outer ring groove, an inner ring groove and a line segment groove for connecting the inner ring and the outer ring; demagnetization is carried out; carrying out laser cladding repair; liquid nitrogen treatment; carrying out cladding repair and liquid nitrogen treatment on the test block to verify the hardness performance; the end face subjected to cladding repair is polished; and cleaning and carrying out penetrant flaw detection, and if no defect exists, successfully repairing. Local repair of a small area of the end face is avoided, local deformation is avoided, and the sealing performance is enhanced; the restoration quality deterioration caused by heat accumulation is avoided; the equal-hardness cladding repair is realized; the problem that after the shell has magnetism, the repairing quality is reduced due to the fact that powder adheres to the end face continuously in the cladding process is solved.

The invention provides a control method for the rolling force of a temper mill and related equipment, and relates to the technical field of metallurgical production, the method comprises the steps that pattern information of strip steel is obtained, and the pattern information comprises width information and thickness information; determining the height of an inlet and the height of an outlet of the anti-wrinkling roller based on the model information; determining the diameter of a working roll based on the model information; determining inlet tension and outlet tension according to the diameter of the working roll; and controlling the rolling process of the temper mill based on the height of the inlet of the anti-wrinkling roller, the height of the outlet of the anti-wrinkling roller, the inlet tension and the outlet tension.

The invention discloses a new energy ship pipeline fixing support and a fixing method thereof, and relates to the technical field of pipeline fixing.The new energy ship pipeline fixing support comprises a U-shaped transverse plate, a plurality of translation plates are arranged in an opening of the U-shaped transverse plate, an arc-shaped supporting plate is arranged above the translation plates, and a pair of arc-shaped clamping grooves are formed in the two sides of the bottom face of the arc-shaped supporting plate; a pair of arc-shaped sliding plates are clamped in the pair of arc-shaped clamping grooves in a sliding mode, an arc-shaped clamping plate is fixedly arranged at the top end of each arc-shaped sliding plate, and the arc-shaped supporting plate and the pair of arc-shaped clamping plates form an annular clamping cavity; and a pipeline is placed above the U-shaped transverse plate and is inserted into the annular clamping cavities in a penetrating manner. By means of the annular clamping cavity, the pipeline can be evenly stressed in all radial directions in the circumferential direction, and three-dimensional stress balance is achieved; the distance between the translation plates is adjusted according to the length of the pipeline, the clamping force can be evenly distributed in the length direction of the pipeline, and the translation plates and the clamping force jointly ensure that the pipeline can be stably clamped in all directions.

The invention relates to the technical field of automobile metal fitting machining, in particular to an automobile metal fitting machining and punching system which comprises a concave frame, and a drilling tool is installed on the horizontal plate wall of the upper portion of the concave frame through a transmission mechanism. When drilling is carried out after the automobile thin-wall metal pipe fitting is fixed, supporting can be formed at the drilling position of the automobile thin-wall metal pipe fitting through the six supporting columns, the six supporting columns are arranged around the drill rod of the drilling tool in an annular array mode, supporting is uniform, and therefore local deformation of the drilling position of a pipe body is avoided, the machining quality is improved, and pipe bodies with different radiuses are cut. When the drilling tool moves leftwards or rightwards to drill holes in other positions, needing to be drilled, of the pipe body, the six supporting columns synchronously move along with the drilling tool all the time, uniform supporting is formed in the drilling positions, and rapid and real-time supporting of drilling holes in different positions is achieved. By arranging the abutting mechanism, a supporting point is added, and the supporting point is close to the six supporting columns, so that the six supporting columns are more stable.

The utility model discloses a steel structure turnover device which comprises a turnover plate and a driving device used for driving the turnover plate to turn over, two sets of clamping plates used for clamping a steel structure part are arranged on the turnover plate, the steel structure turnover device further comprises two sets of transmission plates arranged on one side of the turnover plate, and the two clamping plates are located between the two sets of transmission plates respectively. According to the steel structure overturning device, in the process of clamping and overturning a steel structure to be machined, the clamping plate is pushed to abut against the steel structure with larger force through the elastic assembly and the recognition assembly, the abutting and clamping effect on the steel structure is improved, and in the process that the transmission plate moves towards the clamping plate, the clamping plate is not prone to being damaged. And it can be judged that the clamping force on the steel structure by reducing the gap between the clamping plate and the transmission plate and increasing the gap between the clamping plate and the transmission plate meets the requirement, the clamping force does not need to be continuously increased, and local deformation caused by too large clamping force on the steel structure in the clamping and overturning process is avoided.

The utility model discloses assembling equipment for a stator and a motor shell. The assembling equipment comprises a workbench, a clamping device and a press-fitting mechanism, the workbench is provided with a supporting seat used for fixing a stator, the clamping device comprises at least two clamping pieces and a first driving mechanism, and the clamping pieces have a first state which surrounds the peripheral surface of the stator and is used for clamping the stator and a second state which is far away from the peripheral surface of the stator and is used for loosening the stator; the first driving mechanism is used for driving the clamping piece to move between a first state and a second state; the press-fitting mechanism at least comprises a pressing plate arranged corresponding to the supporting base and a second driving mechanism, and the second driving mechanism is used for driving the pressing plate to move relative to the supporting base. The assembling equipment for the stator and the motor shell has the advantages that the structure is simple, the assembling efficiency is high, the spliced stator is assembled into a whole without a welding process, the roundness tolerance of the inner circle and the outer circle of the spliced stator is easy to control, and the stator and the motor shell are easy to assemble and are not easy to rub.

The utility model discloses a descaling device and a deacidification tower. The descaling device comprises a vibrator and a vibrating rod, the vibrator can generate vibration; the vibration rod is connected with the vibrator so as to be driven by the vibrator to generate vibration, the vibration rod is used for stretching into the deacidification tower, and the vibration rod is used for being matched with the deacidification tower so as to knock the wall of the deacidification tower. According to the descaling device disclosed by the embodiment of the utility model, the pressure applied to the wall of the deacidification tower is small when the deacidification tower is descaled, so that the deacidification tower is prevented from being locally deformed, and the service life of the deacidification tower is prevented from being shortened. Besides, the descaling device disclosed by the embodiment of the utility model can clean scales attached to the wall of the deacidification tower when the deacidification tower carries out a deacidification process, so that frequent production halt of the deacidification tower is avoided, and the operation stability of the deacidification tower is improved.

The utility model discloses an ejection mechanism of a sheet profile semi-solid die-casting mold and the die-casting mold. The ejection mechanism comprises an upper mold, a lower mold, a top mold plate, a plurality of first ejection rods, a plurality of second ejection rods and a driving unit, an upper concave position is formed on the lower surface of the upper die, a lower concave position is formed on the upper surface of the lower die, and a plurality of downwards concave grooves are distributed on the bottom surface of the lower concave position; the upper concave position and the lower concave position jointly form a cavity, and a runner is arranged between the lower die and the upper die; a plurality of first through holes and a plurality of second through holes are formed in the lower die; the lower ends of the first ejector rods and the lower ends of the second ejector rods are fixed to the top mold plate, the first ejector rods are connected into the first through holes in a penetrating mode in a one-to-one correspondence mode, the second ejector rods are connected into the second through holes in a penetrating mode in a one-to-one correspondence mode, the diameter of the top faces of the first ejector rods is R1, the diameter of the top faces of the second ejector rods is R2, and R1 is larger than R2. According to the utility model, the local deformation of the workpiece when the workpiece is ejected due to the bonding of the workpiece and the bottom surface of the concave position is avoided, and the workpiece is prevented from being ejected through.

The invention provides an external assembly type tower crane anti-climbing device, and belongs to the technical field of tower crane anti-climbing. Comprising a plurality of frames, a plurality of mounting plates are fixed to the side faces of the frames, the adjacent frames are perpendicularly arranged, the mounting plates between the adjacent frames are vertically aligned, and the vertically aligned mounting plates are fixedly connected through screws. By arranging the frame, the panel and the round rollers, when the tower body has a certain height and an entrance for entering a control room is located on the side face of the tower body, the fence composed of the frame and the panel is fixed to the periphery of the tower body, and when a person wants to climb the tower body, due to the fact that the surface of the panel is smooth and the feet of the person have no acting points, the person cannot climb the tower body, and the safety of the person is improved. When a person binds a hook on a rope and hangs the rope on the tower body, the person wants to climb the tower body with the help of the rope at the moment, and when the feet step on the panel, the round roller rotates, so that the feet of the person have no leveraging point, the person is further prevented from climbing the tower body, and safety protection for the person is achieved.

The utility model relates to the technical field of silk screen printing, concretely to an automatic non - woven fabric silk screen printing device, including conveying mechanism, one side of conveying mechanism is installed with drive mechanism, one side of drive mechanism is provided with printing mechanism, the below of printing mechanism is provided with silk screen, the inside of silk screen is provided with two symmetrical ink blocking mechanism, the both sides of printing mechanism are provided with symmetrical linkage vibration mechanism, the utility model discloses through setting up ink blocking mechanism, utilize the cooperation of softness cover and magnet, form the closed ink cavity between the ink scraping plate and the ink return plate, prevent the ink from escaping to both sides in the printing process, reduce the pollution of ink to silk screen invalid area, reduced the subsequent silk screen cleaning difficulty and workload, through setting up linkage vibration mechanism, in the printing mechanism movement process, utilize the knob to lift up the crank rod and drive the patting ball knock the trembler plate, make the ink even dispersion, improved the evenness and stability of printing quality.

The utility model relates to the technical field of button switch processing, in particular to a button switch cold bending tool which comprises a bottom plate and a top plate, the top of the bottom plate is fixedly connected with a lower die, the top of the lower die is connected with a jacking assembly, and the outer surface of the jacking assembly is sleeved with a button switch shell. Bending parts are arranged at four corners of the top of the button switch shell; an upper die is fixedly connected to the middle of the top plate, a forming cavity is formed in the bottom of the upper die, and the forming cavity is located over the button switch shell. According to the utility model, the compression of the buffer spring provides an upward counter-acting force for the jacking block, so that the button switch shell can be uniformly stressed in the cold bending process, and local stress concentration is avoided; when the upper die completes cold bending machining and moves upwards, the jacking block resets upwards under the elastic force effect of the buffer spring, the button switch shell is driven to return to the initial position, the button switch shell is conveniently taken down, and the production efficiency and the product quality are improved.

The utility model relates to pipe fitting flatness detection equipment technical field discloses an automobile pipe fitting flatness detection device, including support mechanism, support mechanism includes work bench, and the middle position of work bench is provided with the rest mechanism, and the below of rest mechanism is provided with the push mechanism, and the both sides of rest mechanism are provided with the clamping mechanism for clamping the automobile round pipe fitting, and the top of rest mechanism is provided with the detection mechanism for detecting the automobile round pipe fitting flatness, clamping mechanism includes the sliding assembly of sliding setting in the top of work bench, and the fixed setting of sliding assembly has the rotating assembly, and the fixed setting of rotating assembly has the push -and -pull assembly, and the fixed setting of push -and -pull assembly near rest mechanism one side has the tensioning assembly for restricting the automobile round pipe fitting. The utility model can carry out the detection to the outer circumferential surface of pipe fitting through the rotation pipe fitting, need not to carry out manual adjustment for many times, and can be applicable to the flatness detection of a variety of sizes of automobile key, and the detection efficiency is high.

This utility model relates to the field of pipe processing technology and discloses an inlaid roller mold for preventing damage to the surface of pipe fittings during bending. The mold includes a base, a mounting plate fixedly mounted on the top of the base, an L-shaped plate fixedly mounted on the top of the mounting plate, a cylinder fixedly mounted on the top of the base, two bending rollers symmetrically arranged on the front side of the L-shaped plate, an adjustment component on the rear side of the L-shaped plate, and a lifting component at the output end of the cylinder. This utility model avoids sliding friction between the mold and the pipe fitting by using rollers to contact the pipe fitting surface, thus preventing surface damage. Furthermore, the rollers act as guides during bending, ensuring the pipe fitting moves along a preset bending path. The rollers also distribute the concentrated pressure during bending to multiple contact points, preventing localized deformation or damage to the pipe fitting. The distance between the two bending rollers can be adjusted to accommodate different bending sizes.

The utility model discloses a kind of automobile A column reinforcing member based on lightweight design, it is related to the technical field of automobile parts, including external steel body, the inside of external steel body is equipped with main body reinforcing component, the inside of main body reinforcing component is equipped with energy-absorbing member, the side of external steel body away from the surface of main body reinforcing component is equipped with sound insulation cotton.The utility model can make the internal structure of automobile A column more stable by main body reinforcing component, reduce the deformation due to collision, protect front compartment safety, by energy-absorbing member, local shock wave can be offset, ensure that front compartment living space is not deformed, while the material density of energy-absorbing member is smaller, the overall weight of A column can be reduced, so as to reduce the weight of entire vehicle body, reach the effect of reducing fuel consumption, while external steel body is fixed together by hinge hole bolt and angle steel bolt, compared with general welding mode, when maintaining, avoid cutting A column, cause stress concentration of A column, affect the safety of overall A column structure.

The invention relates to the technical field of aluminum alloy liquid cooling plate machining, in particular to an aluminum alloy liquid cooling plate efficient precision stamping forming device and a working method thereof, and the aluminum alloy liquid cooling plate efficient precision stamping forming device comprises a base, a mold assembly, a temperature control system and an auxiliary supporting mechanism. The die assembly achieves high-precision forming through the micro air bag and the runner forming unit, the temperature control system adjusts the temperature of cooling liquid so as to optimize temperature field distribution, and the auxiliary supporting mechanism adapts to different thickness machining requirements. The working method comprises the steps of pressure and temperature real-time monitoring, runner forming, quality detection and the like. The plate can be effectively prevented from being deformed or warped, the runner is prevented from being collapsed or blocked, the forming precision and the cooling performance are improved, and the requirements for efficient heat dissipation and light weight of the power battery liquid cooling plate are met.

The utility model relates to the technical field of roll forming, in particular to a distortion correction seat group for roll forming of an automobile seat slide rail, which comprises a frame body, a support frame and a connecting frame, two ends of the connecting frame are respectively abutted against the surface of the support frame, the support frame is mounted in the middle of the frame body, and the surface of the connecting frame is connected with a correction component. The correcting assembly comprises a rotating shaft and a correcting pressing block, and a cooling structure is arranged in the correcting pressing block. The cooling structure comprises a cooling flow channel and a connecting block used for being installed with the connecting hole in a paired mode. The cooling structure is arranged in the correction pressing block, so that the cooling medium smoothly circulates in the cooling structure, and heat generated by friction of the correction pressing block in the rolling process in the machining process is reduced through the cooling medium in the cooling structure, so that the physical influence caused by expansion caused by heat and contraction caused by cold is avoided; the precision and the size of a rolled product are influenced, or the hardness is changed due to the annealing of the correction pressing block, or other adverse effects are caused.

The application discloses a motor shell anti-deformation processing device, which comprises a base, two symmetrical punching assemblies slidingly arranged on the base, and a clamping assembly arranged between the two punching assemblies. The clamping assembly comprises two supporting frames and a clamping cylinder. One of the supporting frames is slidingly arranged on the base and connected with the telescopic end of the clamping cylinder. The supporting frame is fixed with a tension cylinder and a tension piece. The tension piece comprises a plurality of split supporting molds and a plurality of tension blocks. When the tension cylinder is driven, the split supporting molds are first expanded radially outward to form an avoiding gap between adjacent split supporting molds, and then the tension blocks are moved radially through the gap until the tension blocks and the outer walls of the split supporting molds jointly form a complete cylindrical surface and abut against the inner wall of the motor shell. When the reverse action is performed, the tension blocks are first retracted, and then the split supporting molds are contracted radially inward. The application realizes large-area rigid support on the inner wall of the shell before drilling, effectively inhibits plastic deformation around the hole, and improves processing efficiency and quality.

The utility model discloses an elastic member suspension tension and compression testing device, which relates to the technical field of tension and compression testing devices and comprises a base, a fixed seat is fixedly connected to the left side of the top of the base, a central controller is fixedly connected to the rear side wall of the fixed seat, and fixed frames are fixedly connected to the tops of the fixed seat and a movable sliding seat. Pressure compensation clamping assemblies are arranged in the two fixing frames, and a testing assembly is arranged on the right side of the top of the base. According to the utility model, through the arranged pressure compensation clamping assembly, pressure adjustment can be carried out according to a pressure signal fed back by a pressure sensor, and the clamping force of the elastic member suspension is ensured to be within a proper range, so that the reliability of test data is improved; the device can accurately control and adjust the magnitude of the applied tension or pressure to meet different test requirements, so that the performance of the elastic part suspension under different tension and pressure conditions is accurately evaluated.

The invention belongs to the technical field of reinforcing steel bar straightening, and discloses a reinforcing steel bar straightening device for civil engineering construction, which comprises a fixed bracket, a driving assembly is arranged at the upper end of one side of the fixed bracket, a striking assembly is fixedly mounted on the top surface of the fixed bracket, and a connecting assembly is arranged on one side of the top surface of the fixed bracket. A straightening assembly is arranged in the middle of the top face of the fixing support, the connecting assembly comprises a rotating unit, and an abutting piece is fixedly installed at the top of the rotating unit. Through cooperation of a limiting ring, a connecting rod and other structures, a moving rod moves towards the position close to the connecting rod, a striking unit rotates, when an abutting piece does not abut against the moving rod, the striking unit continuously swings to impact a second straightening piece, a large amount of energy can be instantly released through impact, scratches and damage to the surface of a reinforcing steel bar are reduced, and the service life of the reinforcing steel bar is prolonged. And the good surface quality of the material is kept, and the effects that the material is not prone to deformation or fracture when stressed, and the fracture risk during fatigue is reduced are achieved.

The utility model discloses a bearing seat and tracking support relates to photovoltaic power generation technical field, and this support includes main beam, bearing seat, photovoltaic bearing and non -driven stand. Bearing seat is enclosed by the stamping cover plate and stamping bearing base of mutual adaptation, and the inside holds photovoltaic bearing, and the stamping bearing base is combined by two same stamping sub -units, and the bottom is connected with non -driven stand. Photovoltaic bearing is integral type spherical high molecule structure, and the sleeve joint is in main beam outside, and its spherical outer contour is adapted with bearing seat inner wall, can realize main beam angle adjustment, and the stamping sub -unit has H type and Y type two, is connected with non -driven stand wing plate or directly with waist board through corbel adapter, and the bearing seat axial both ends are equipped with flanging, and the base is equipped with the strip. The utility model discloses through stamping structure reduces the cost, shortens the period, and realizes flexible angle -adjusting with the help of spherical bearing, and the adaptability is strong, is applicable to large -scale photovoltaic power station.

This utility model provides a door reinforcement structure, a door assembly, and a vehicle, belonging to the field of automotive door technology. It includes a first outer panel reinforcement plate, a first force transmission structure, a second outer panel reinforcement plate, and a second force transmission structure. The first force transmission structure connects the first outer panel reinforcement plate and the inner door panel along the left-right direction of the vehicle body, and is located at the lower edge of the window frame of the inner door panel near the corner of the window frame. The second outer panel reinforcement plate is located below the first outer panel reinforcement plate, and at least one end is connected to the inner door panel. The second force transmission structure connects the first and second outer panel reinforcement plates along the up-down direction of the vehicle body. The inner door panel, first force transmission structure, first outer panel reinforcement plate, second force transmission structure, and second outer panel reinforcement plate of this utility model form a force transmission channel, which can distribute the force of opening and closing the door from the corner of the window frame to a larger area, reducing stress concentration at the corner of the window frame, avoiding local deformation, and improving the overall rigidity of the door assembly.

The utility model discloses a front bumper and upper grille riveting structure which comprises a front bumper body and an upper grille body, bumper sharp corners are arranged at the two ends of the front bumper body, grille sharp corners are arranged at the two ends of the upper grille body, and the bumper sharp corners and the grille sharp corners are arranged oppositely. The bumper sharp corner is provided with a rotatable connecting piece, the grille sharp corner is fixedly provided with a rivet hole inserting piece, the connecting piece and the rivet hole inserting piece are both provided with riveting holes, and the connecting piece and the rivet hole inserting piece are riveted through a rivet. The riveting structure of the front bumper and the upper grating is simple in layout and ingenious in conception, not only can guarantee smooth demolding of two parts, but also can increase the connection strength, adopts the simplest injection molding and riveting process, and plays roles in increasing local strength and preventing local deformation in the structure. According to the structure, a long-term and stable manufacturing process of the product can be realized only by inputting a simple riveting tool, so that the reliability of the product is improved, the manufacturing cost of the product is greatly reduced, and the project expense is reduced.

The utility model relates to a urine collector, and belongs to the technical field of medical auxiliary instruments. Comprising a urine collecting bottle and a urine collecting funnel, the urine collecting funnel is fixed to the upper portion of the urine collecting bottle in a detachable connection mode, and a flow dividing assembly and an air guide pipe are arranged in the urine collecting funnel. The shunting assembly comprises at least one separator, and the separator is arranged at the bottom of the urine collecting funnel and is provided with at least one shunting gap communicated with the urine collecting bottle and the urine collecting funnel; one end of the air guide pipe penetrates through the shunting assembly and extends into the urine collecting bottle, and the other end of the air guide pipe is communicated with the outside and used for balancing air pressure inside and outside the urine collecting bottle; when the liquid level of the urine in the urine collecting bottle is in contact with the bottom end of the gas guide tube, the urine is prevented from continuously flowing into the urine collecting bottle through the flow dividing gap by virtue of a pressure difference. By means of the urine collecting device, the problems that in the prior art, a urine collecting device is complex in structure and large in operation difficulty are solved.

The invention relates to a high-strength aluminum alloy residual stress testing device and method in the technical field of material mechanical property testing, the high-strength aluminum alloy residual stress testing device comprises a rack, a clamping assembly used for clamping a sample and a cutting assembly used for cutting the sample are arranged on the rack, and a plurality of strain gauges are arranged in the middle of the bottom face of the sample at intervals in the cutting direction; according to the invention, the second jacking piece is arranged to apply accurate jacking force at the trisection position of the sample in the length direction, so that static deformation of the sample caused by self weight is effectively compensated, and systematic errors of the gravity on a measurement result are eliminated from the source; compared with a mode depending on follow-up algorithm compensation or tedious early-stage calibration in the prior art, the method does not need complex calculation or manual intervention, the operation process is simplified, the technical requirements for operators are reduced, a detector system is simpler and more reliable, and the repeatability and accuracy of testing are improved.

The production line comprises a fiber material stirring system, a paving base plate conveying system, a lower-layer fiber material paving machine, an upper-layer fiber material paving machine, a pre-pressing machine, a stacking machine, a sandwich plate conveying and gluing system, a cold pressing machine, a plate dividing machine, a paving base plate returning system and a finished product processing system. The fiber material stirring system provides fiber materials to the upper-layer fiber material spreading machine and the lower-layer fiber material spreading machine through a fiber material conveying belt machine. The lower-layer fiber material spreading machine, the upper-layer fiber material spreading machine, the pre-pressing machine and the stacking machine are respectively arranged above the paving base plate conveying system at intervals along the conveying direction of the paving base plate conveying system; and the laminboard feeding and gluing system is arranged between the lower-layer fiber material spreading machine and the upper-layer fiber material spreading machine. The utility model has the advantages of high finished product quality, few production procedures, simple process, greatly shortened preparation period, high production efficiency and low cost.

The utility model relates to a technical field of case, put forward a kind of carbon fibre case with good pressure resistance, including case body, including blocking frame, blocking frame is connected on the inner side wall of case body, the front end of case body is rotatably connected with cabinet door, the inner side wall on the upper side of case body is rotatably connected with multiple support bars, the inner side wall on the side of case body is rotatably connected with multiple rotating plates, rotating plate is connected with strip groove in one end close to support bar, strip groove is provided with sliding slot in one end close to support bar, support bar is equipped with cylinder in one end close to strip groove, one end of cylinder is connected with circular blocking piece, one end of circular blocking piece is connected with circular seat, the inside of circular seat is slidably connected with sliding element, one end of sliding element is connected with locating block, spring is equipped between sliding element and circular blocking piece, locating hole is provided on rotating plate, to avoid equipment partial deformation when being subjected to heavy pressure on top, reach the purpose of improving equipment stability.

This invention provides a welding machine for assembling and splicing precision castings, relating to the field of welding machine technology. It includes a welding frame with a positioning area and adjustment areas on both sides of the positioning area. A welding robot is mounted on the side of the welding frame via a welding machine mounting base. The machine also includes a longitudinal adjustment frame, a longitudinal abutment component, a parallel positioning component, and an adaptive clamping component. Longitudinal adjustment frames are slidably mounted on both sides of the welding frame, and transverse adjustment frames are slidably mounted on the longitudinal adjustment frames. A longitudinal abutment component is mounted on the side of each transverse adjustment frame away from the positioning area. A parallel positioning component is installed within the positioning area, and an adaptive clamping component is mounted on each transverse adjustment frame. This invention provides a welding machine for assembling and splicing precision castings, solving the technical problem in related technologies where rigid clamping structures are difficult to adapt to the irregular shape of precision castings, leading to easy scratching of the castings during clamping and difficulty in maintaining stable clamping.

A pipe auxiliary support fixture for machine tools and a machine tool. The present invention fixes each slider by the cooperation between a rotating shaft end fixing plate, a limit stopper, a guide shaft, a linear bearing, an X-axis end fixing plate, and a slider fixing seat, so that the slider can be arranged along the guide shaft between the spring chuck and the bushing of the machine tool, so as to provide support and support for the middle part of the workpiece through the support sleeve on the top of the slider. The present invention can ensure that the machine tool can firmly clamp the workpiece and accurately position the workpiece during the process of processing precision thin-walled tubes with an outer diameter of less than 1 mm, so that the processing of the workpiece is more stable and reliable. The present invention can avoid the problems of tube depression and docking misalignment that occur in conventional positioning and clamping of the workpiece and continuous processing by supporting the sleeve and the slider. The present invention can realize the processing of precision thin-walled tubes with an outer diameter of less than 1 mm, and also provides a certain reference and reference for the processing of other similar small rotating parts.

The invention belongs to the technical field of open caisson control, and discloses a vertical shaft beam plate bottom sealing device and a construction method thereof.The vertical shaft beam plate bottom sealing device comprises a ring beam, a sliding rail, a beam plate and at least two limiting assemblies, the ring beam is arranged at the upper end of a shaft blade foot and matched with the sliding rail to serve as a running track of a heading machine, sufficient operation space is provided for the heading machine, and the heading efficiency is improved. In the bottom sealing stage, the sliding rails and the ring beams form a supporting frame, and local deformation of the beam plates is prevented; the limiting assembly can effectively ensure that the beam plate is fixed relative to the sliding rail, and the beam plate is prevented from shifting or loosening due to external force in the bottom sealing process; the grouting holes and the grout overflow holes are formed in the beam plate, redundant mud at the well bottom can be effectively discharged in the grouting process, and the uniformity of the bottom sealing concrete layer is ensured. According to the vertical shaft beam plate bottom sealing device and the construction method thereof, the thickness of the bottom sealing concrete layer is reduced, meanwhile, the excavation space of the tunneling machine is guaranteed, the tunneling efficiency is improved, the thickness uniformity of the bottom sealing concrete layer can be guaranteed, and the overall bottom sealing structural strength is improved.