634 results about "Abnormal shaped" patented technology

The invention particularly relates to a double-sealing special-shaped ball valve which comprises a valve body, a valve rod rotating and lifting operation mechanism movably installed at the top of the valve body and a connector arranged at the bottom end of the valve rod rotating and lifting operation mechanism. A notch is formed in the top of the special-shaped ball valve clack movably installed in the valve body and can be tensioned, a thin-layer slotting plate part is arranged at the bottom of the special-shaped ball valve clack, deformation is easier, a side through opening is formed in the middle of the special-shaped ball valve clack and used for switching rapid water passing, and therefore the whole structure is an inverted-C-shaped special-shaped ball, and the special-shaped ball valve has the high opening and contracting functions. The left side and the right side of the special-shaped ball valve clack shrink and deform towards the middle portion, the two inclined holes close the notch in the top of the special-shaped ball valve clack, so that the second sealing gasket is separated from the first sealing gasket, and at the moment, in the whole rotating opening and closing process of the valve, the second sealing gasket of the special-shaped ball valve clack and the first sealing gasket of the connecting pipe do not rub; the service life is long.

The invention relates to the technical field of part machining and positioning, in particular to a positioning device for part machining and a using method.The positioning device comprises a mounting rail, a primary clamping mechanism, a non-planar clamping mechanism, a shape follow-up mechanism, an axis keeping mechanism and a clamping, locking and pressurizing mechanism; the outer wall of the main gear is engaged with a displacement rack, and a fixed seat and a sliding seat are arranged above the mounting rail. Primary axis positioning is conducted on the shaft part through the primary clamping mechanism, then when one end of the machined shaft part is in a special shape, the shape follow-up mechanisms are attached to the special-shaped end face, and then any shape follow-up mechanism can trigger the axis maintaining mechanism to lock the position of each shape follow-up column at the moment; the shape follow-up mechanism is suitable for special-shaped faces of any shapes, and the shape follow-up mechanism can be matched with the clamping, locking and pressurizing mechanism to enable the non-planar clamping mechanism to pull force downwards and inwards, so that clamping of the clamping rubber on the outer walls of the special-shaped shaft parts is enhanced.

The invention relates to the technical field of positioning machining clamps, in particular to an engine right suspension support positioning machining clamp which is characterized in that a rocker is rotated to drive a first bevel gear to rotate, and a second bevel gear meshed with the first bevel gear rotates along with the first bevel gear and drives a rotary disc to rotate synchronously. The shifting grooves in the surface of the rotary disc push the shifting rods inserted into the shifting grooves to move in the radial direction, the bottoms of the shifting rods are fixedly connected with the sliding blocks, and the sliding blocks slide in the sliding grooves of the fixed disc, so that the three sets of positioning blocks in a circumferential array synchronously move centripetally or centrifugally, and reference positioning of supports of different sizes is achieved; and then the L-shaped shifting piece is loosened and is automatically clamped between teeth of the limiting gear under the action of the first spring to achieve self-locking, displacement is prevented in the machining process, the outer surfaces of the engine right suspension supports of special shapes or different sizes can be positioned through the three sets of positioning blocks arranged in a circumferential array mode, and the application range is wide.

The invention relates to the technical field of forging, in particular to an air suspension aluminum cylinder assembly forging process which comprises the steps that a pre-forging blank is placed in a forging die and pre-forged, a forging face is divided into a plurality of annular areas, and point cloud data of a plurality of points in each annular area in the pre-forging process are obtained in real time; stopping pre-forging and pressing based on the change condition of the characteristic coordinate values, screening a raised characterization area, judging whether the shape change of the pre-forging blank is abnormal or not, forging the pre-forging blank with the abnormal shape change in a forging compensation manner to obtain a forging part, annealing the forging part to obtain an aluminum cylinder forging part, and further, performing pre-forging and pressing on the aluminum cylinder forging part to obtain the aluminum cylinder forging part. The forming shape stability of the special-shaped forged piece is analyzed according to the local deformation state of the material in the forging process, the forging mode is adaptively adjusted according to the material state difference, and the shape and size precision and the performance consistency of the special-shaped aluminum cylinder forged piece of the air suspension are improved.

According to the forest and fruit tree body profiling flapping fruit harvester based on the special-shaped crankshaft structure, transmission is achieved through special-shaped crankshafts with different crank throw eccentricity degrees, and the movement amplitude of flapping strips is limited through the inner side edges of amplitude limiting plates; the purpose that the flapping strips are arranged in a manner of imitating the contour of a tree crown can be achieved while the flapping strips are flapped, the flapping strips are arranged in a shape of imitating a tree shape, missed flapping of the top of the tree crown and the pole position of the symmetry axis is avoided, and the net picking rate of different positions is increased. The device comprises a chassis vehicle body and a tree-like flapping device, in the tree-like flapping device, a crankshaft with a plurality of crank throws is rotationally arranged on a base, and the eccentric distances of the crank throws are different; the lower end of each beating strip is hinged to a crank throw of the crankshaft; opposite amplitude limiting plates are arranged on the higher parts of the two sides of the base, and an amplitude limiting hole is formed between the opposite inner side edges of the two amplitude limiting plates; the distance between the inner side edges of the two amplitude limiting plates close to the center of the amplitude limiting plate in the direction parallel to the axial direction of the crankshaft is smaller than the distance between the inner side edges of the two amplitude limiting plates close to the two ends of the amplitude limiting plate.

The invention relates to a multi-station cold heading forming process for a special-shaped pipe fitting of an automobile shock absorber, and belongs to the technical field of cold heading of special-shaped pipe fittings of automobiles. A combined female die with a three-stage gradual-change fillet structure is adopted, and the diameters of fillets are gradually increased to be matched with a gradient stiffness belleville spring buffer unit, so that staging release of stress is realized; a cross section sudden change stress peak value of the root of the flange is eliminated, the crack risk is reduced, a special-shaped punch of a 45-degree helical angle gradually-shrinking type flow guide groove is designed, axial and radial flow of materials is dynamically guided, meanwhile, the filling amount is controlled in real time through a hydraulic adjustable limiting mechanism, and the problems of folding and wall thickness fluctuation are radically solved; three sets of gradient clamping force clamping jaws distributed at 120 degrees and V-shaped pre-indentations are arranged, asymmetric deformation generated by preorder cold heading is compensated in a self-adaptive mode, and the coaxiality error of a special-shaped contour and a flange is reduced. The problems that in the multi-station cold heading process in the prior art, cracks are caused due to stress concentration of a fixed fillet die, and folding defects are caused due to out-of-control flowing of a linear flow guide groove material are solved.

The invention discloses a precision clamp device for machining special-shaped workpieces in mechanical design, and relates to the technical field of mechanical manufacturing, the precision clamp device comprises a base main body, a reference bottom plate, a plurality of rotating shafts and corresponding elastic clamping blocks, the reference bottom plate is arranged on the base main body, and positioning slots are formed for the rotating shafts to be rotatably mounted; the rotating shafts can independently rotate and drive the elastic clamping blocks to deflect to adapt to the irregular surface of the special-shaped workpiece, the rotating shafts comprise rotating blocks matched with the inserting grooves and adjusting sliding grooves extending along the shaft length, and the rotating shafts are evenly distributed on the circumference of the reference bottom plate; an elastic clamping block is connected with a transmission screw and an adjusting nut, a linear sliding block is arranged to be matched with an adjusting sliding groove, a self-adaptive contact is arranged on the side, facing the clamping center, of the elastic clamping block, the contact is provided with an elastic protection contact end cover, and a stress sensing connecting rod and an elastic buffering spring are installed in the contact. A movable rod penetrates through the base body, one end of the movable rod is connected with a control handle, the other end of the movable rod is connected with a self-adaptive pressing plate, the movable rod is sleeved with a reset spring, the pressing plate is provided with a profiling abutting block, and the clamping stability is improved.

The invention discloses a clamping mechanism for special-shaped metal part machining, and relates to the technical field of flexible clamps, the clamping mechanism comprises at least one positioning unit which is arranged at intervals in the workpiece clamping direction, and a clamping driving unit which is connected with the positioning unit and is used for driving the positioning unit to move towards the workpiece side so as to realize clamping, the positioning unit is provided with a positioning column capable of stretching and retracting in a self-adaptive mode along the contour of the workpiece and an adjusting rod used for locking the stretching and retracting state of the positioning column, and the clamping driving unit comprises a U-shaped base, a U-shaped frame connected with the positioning unit and a linear driving piece driving the U-shaped frame to move in the direction close to or away from the workpiece. The clamping mechanism is convenient to operate on the whole, low in manufacturing cost, capable of being suitable for effectively clamping different metal pieces, reliable in structure and good in use performance.

The utility model aims at providing the two-section type clamping jaw structure suitable for the automobile interior cup holder, and the problems that a clamping jaw of an original one-section type clamping jaw structure is directly connected with the cup holder, a special-shaped cup (bottle) is prone to being clamped when taken out and needs to be put back for the second time and then taken out, and the connecting position of the clamping jaw and the cup holder is extremely prone to being damaged after the special-shaped cup (bottle) needs to be taken out after the special-shaped cup (bottle) is taken out after the special-shaped cup (bottle) is taken out are solved. A first hole A in the clamping jaw is coaxially matched with a first rotating shaft B on the upper clamping jaw bracket; a second rotating shaft D on the upper clamping jaw bracket is coaxially matched with a second hole C in the lower clamping jaw bracket; and the spring is coaxially matched with a third rotating shaft E on the lower clamping jaw bracket. The cup holder has the advantages that the two-section type clamping jaw structural design is adopted, the clamping force generated after a water cup (bottle) is placed in the cup holder cannot be reduced, the water cup (bottle) can be firmly fixed, and the situation that the water cup (bottle) cannot be taken out due to the fact that the water cup (bottle) is clamped very tightly is avoided.

The invention discloses a numerical control planer type milling machine convenient for clamping workpieces, which belongs to the technical field of numerical control machine tools and comprises a bottom frame, an H-shaped frame is fixedly mounted in the bottom frame, a linear module is fixedly mounted on the upper surface of the H-shaped frame, a placing plate is fixedly mounted on the upper surface of a moving block of the linear module, and a lifting mechanism slidably sleeves the upper end of the outer surface of the placing plate. The inner ring wall of the lifting mechanism is engaged with the four pressing and clamping mechanisms, and the four pressing and clamping mechanisms slide on the upper surface of the lifting mechanism at the same time and can slide and adjust the pressing and clamping directions on the upper surface of the lifting mechanism by taking the frame appearance of the lifting mechanism as a guide rail through engagement transmission force. Through the design of the lifting mechanism and the pressing and clamping mechanism, only manual workpiece placement, follow-up parameter recognition, height and direction adjustment and full-automatic clamping force control are needed, manual clamp adjustment is not needed, the special-shaped workpiece can be adapted, and the machining quality consistency is guaranteed.

The present invention belongs to the technical field of processing special-shaped valve bodies, and specifically relates to a grinding device for special-shaped valve body forgings; it comprises a turntable which can reciprocate horizontally, a clamping mechanism, a dustproof mechanism and a grinding mechanism; the clamping mechanism is arranged on the turntable, and clamps and fixes the special-shaped valve body placed on the turntable; the dustproof mechanism comprises a grinding frame, a screw rod and a retractable dustproof cover; the dustproof cover is used for sealing and protecting the valve flow opening on the special-shaped valve body; the grinding mechanism comprises a grinding roller, and the grinding roller adaptively grinds the gap at the connection of the valve flow opening on the side wall of the special-shaped valve body; the present invention is designed for the special-shaped valve body, and can effectively grind the connection of the pipe mouth of the valve body forging, thereby solving the problem that the existing grinding device is difficult to operate and the grinding effect is poor.

The utility model relates to the technical field of clamps, in particular to a three-coordinate measurement supporting assembly which mainly solves the technical problem that an existing three-coordinate measurement supporting structure for special-shaped parts is low in reuse value. The assembly comprises a clamping and supporting seat, the clamping and supporting seat comprises a first lifting base, a base shaft which is vertically arranged is fixed to the top end of the first lifting base, a connecting shaft is rotatably installed at the top end of the base shaft, the rotating axis is horizontally arranged, the connecting shaft is perpendicular to the base shaft, and a first locking piece is arranged between the connecting shaft and the base shaft; a web plate of the U-shaped seat is rotationally installed at the end, away from the basic shaft, of the connecting shaft, the rotating axis coincides with the axis of the connecting shaft, a second locking piece is arranged between the U-shaped seat and the connecting shaft, and a jackscrew is perpendicularly installed on at least one wing plate of the U-shaped seat in a penetrating mode. When the assembly is used, reliable supporting of the special-shaped parts can be completed by matching different numbers of clamping and supporting bases, and the assembly can be suitable for supporting the special-shaped parts of different specifications and is high in reutilization value.

The invention discloses a creep-resistant deep groove ball bearing with a special-shaped structure. Belongs to the technical field of new energy automobile bearings. The deep groove ball bearing mainly solves the problems that when an existing deep groove ball bearing with an O-shaped ring structure on an outer ring is installed, the O-shaped ring is prone to falling off, and after press fitting, due to the fact that the O-shaped ring is prone to deformation, the size of the outer diameter D1 is uncontrollably changed, and the product performance is affected. The deep groove ball bearing is mainly characterized in that the deep groove ball bearing consists of an outer ring, an inner ring, a steel ball and a retainer, wherein an outer ring annular groove is formed in the outer diameter surface of the outer ring; and a special-shaped rubber ring which has the same section shape as the outer ring annular groove and is higher than the outer ring annular groove is pressed in the outer ring annular groove. The bearing has the advantages of being firm in assembly, small in deformation, small in variation of the outer diameter size of the rubber ring after press fitting, excellent in creep resistance and the like, and is mainly used for new energy automobile speed reducers and motor input shafts.

According to the mechanical gripper with the self-adaptive grabbing function, the exposed end of a piston rod is sleeved with a connecting rod base through a vertical through hole A, and the connecting rod base is fixedly connected with a cylinder barrel; the exposed end of the piston rod is fixedly sleeved with the pushing seat through a vertical through hole B, two pairs of movable seat lug plates A are symmetrically arranged at the left end and the right end of the upper portion of the pushing seat, and two movable seat lug plates B are symmetrically arranged at the left end and the right end of the lower portion of the pushing seat; the two clamping jaw mechanisms are oppositely distributed on the left side and the right side of the piston rod. The clamping jaw mechanism comprises a clamping jaw base, a plurality of elastic jaw teeth and a shovel body; the two transmission assemblies are distributed corresponding to the two clamping jaw mechanisms correspondingly. Each transmission assembly comprises a connecting frame A, a connecting frame B and a connecting frame C; each transmission assembly is connected with the corresponding connecting rod base, the corresponding pushing base and the corresponding clamping jaw mechanism on one side. The mechanical claw has the self-adaptive posture adjusting capacity, self-adaptive grabbing operation of objects in different shapes or special-shaped workpieces can be achieved under the condition that the mechanical claw is not replaced, and the grabbing operation efficiency can be remarkably improved.

The invention provides a pneumatic swing head tool for machining a sealing surface of a gate valve body, and belongs to the technical field of valve machining. Comprising a machine tool, one side of the machine tool is provided with a control center, the surface of the machine tool is slidably connected with a sliding support, one side of the sliding support is provided with a sliding groove disc, the interior of the sliding groove disc is rotatably connected with a rotating handle with a rod, the top of the machine tool is provided with a square box body, and the top of the square box body is connected with a pressing disc in an inserted mode. By arranging the hydraulic clamping assembly and the angle adjusting assembly, dynamic balanced distribution of clamping force of multiple sets of synchronous cylinders is achieved, the problem of stress concentration in the clamping process is avoided, the deformation probability of a valve body is reduced, modules are rapidly replaced, the fault maintenance time is shortened, a multi-angle adjustable swing head is achieved, and the working efficiency is improved. The adaptability to special-shaped valve bodies with different pipe diameters is improved, the cutting fluid is clamped, the service life of a cutter is prolonged, meanwhile, the machining stability and the production efficiency are guaranteed, and the smoothness of the sealing face of the valve body is improved.

The invention discloses an intelligent grinding and polishing device suitable for special-shaped parts, and relates to the technical field of part machining, the intelligent grinding and polishing device comprises a bearing assembly, the bearing assembly comprises a supporting table, an empty groove is formed in the top of the supporting table, an anti-skid groove is formed in the bottom in the empty groove, and an auxiliary frame is fixed to the supporting table; and the positioning assembly is arranged on the supporting table and comprises a workbench located at the top of the supporting table, and storage shells are fixed to the two sides of the top of the workbench correspondingly. The special-shaped part machining device has the beneficial effects that through the arrangement of the positioning assembly and the processing assembly, special-shaped parts of different shapes can be preliminarily positioned through the multiple positioning rods, then locking is conducted in cooperation with the upward-moving displacement frame, the clamping stability of the special-shaped parts is guaranteed, and meanwhile the machining efficiency is improved according to different grinding and polishing machining requirements. And the surface of the special-shaped part is treated in cooperation with different machining heads, the machining heads are convenient to disassemble and assemble, and the overall machining efficiency is guaranteed.

The invention belongs to the field of boring cutters, and particularly relates to a multipurpose deep hole boring cutter bit which comprises a cutter holder, a supporting block and a boring cutter bit body, a fixing groove is formed in the cutter holder, the supporting block is arranged in the fixing groove, the boring cutter bit body is arranged in the supporting block, and the side wall of the cutter holder is in threaded connection with an adjusting bolt. According to the boring tool bit, the problem of shaking caused by the size adaptation problem of the supporting block and the fixing groove in the prior art is solved through the hydraulic device, when the supporting block is installed, the supporting block is fixed through the hydraulic device, and the supporting block is fixed through the hydraulic device. The hydraulic oil suction pump is started, the limiting ejector rod is pushed through hydraulic oil, the stretching-out position can be flexibly adjusted according to the shape change of the supporting blocks, the limiting ejector rod is precisely matched with the supporting blocks of different shapes, stable limiting and fixing are achieved, multiple gaskets of different sizes do not need to be prepared, and special-shaped gaskets do not need to be specially customized.

The invention provides a bidirectional variable-curvature special-shaped barrel roll bending forming method and system and electronic equipment, and belongs to the technical field of roll bending forming. The method comprises the steps that a working roll displacement expression of roll bending equipment is determined based on shape parameters of the roll bending equipment and material performance parameters of a plate; the roll bending equipment comprises a working roll and a servo motor; the working roll comprises a convex upper roll, a concave lower roll and a concave side roll which are meshed to form a variable-curvature forming surface; determining a displacement parameter of the working roll based on the plate thickness parameter and the working roll displacement expression; the displacement parameters are input into the trained network model to obtain servo motor control parameters, the servo motor control parameters are input into a PI controller, a servo motor is controlled, and a working roller is driven to move to conduct roller bending forming on the plate; the network model is obtained based on WNN neural network training. According to the method, the problems of low machining efficiency and low forming precision of a bidirectional variable-curvature special-shaped barrel roll bending forming method can be solved.

The invention discloses a special-shaped metal part surface grinding and deburring device which is characterized in that a driving motor is fixedly mounted at the upper part of the inner side of a bracket; the transmission mechanism is installed on the upper portion in the support and used for conveying the special-shaped metal parts; the grinding mechanism is mounted at the upper part of the inner side of the bracket and is used for grinding and deburring the upper surface of the special-shaped metal part; the grinding mechanism comprises a third gear, a fourth gear, a tensioning roll shaft, a conveying roll shaft and an abrasive paper conveying belt. The third gear, the fourth gear, the tensioning roll shaft and the conveying roll shaft are all rotationally connected to one side of the interior of the support. According to the special-shaped metal part deburring device, by arranging the transmission mechanism and the grinding mechanism, the deburring precision and efficiency of special-shaped metal parts are improved, surface damage and non-uniformity caused by manual grinding are avoided, and therefore the overall quality and use performance of the parts are improved.

The utility model provides a clamp for machining a special-shaped workpiece, relates to the technical field of clamps, and solves the technical problem that a clamp in the prior art is not easy to clamp and fix according to the asymmetric shape of the special-shaped workpiece. The device comprises a clamp base, mounting grooves are symmetrically formed in the periphery of the upper end face of the clamp base, rotating shafts are rotatably mounted in the mounting grooves and horizontally extend out of the upper end face of the clamp base, adjusting grooves are formed in the rotating shafts, clamping plates are slidably mounted on the adjusting grooves, screws are rotatably mounted in the adjusting grooves, and the screws penetrate through the clamping plates in a threaded mode. A handle is fixed to the bottom of the end, away from the clamp base, of the rotating shaft, a movable plate is elastically installed on the side face of the handle, and an abutting piece is fixed to the top end of the movable plate. The rotating shaft can be fixed to the edge of the clamp base at various angles, so that a special-shaped workpiece is fixed to the upper end face of the clamp base, use is flexible, and operation is easy.

A special-shaped bearing ring, a raceway diameter measuring mechanism and an auxiliary tool are included, the special-shaped bearing ring comprises a small outer circle, one side of the small outer circle is connected with a flange end face, a large outer circle is arranged on the outer wall of the flange end face, and the large outer circle is connected with the raceway diameter measuring mechanism. An arc-shaped blade shoulder is arranged at the joint of the flange end face and the small outer circle, an arc-shaped groove and a U-shaped groove are formed in the bottom of the flange end face at the same time, the arc-shaped groove extends to the small outer circle, and a roller path is arranged on the inner wall of the small outer circle in a surrounding mode; comprising the following specific steps that S1, turning is conducted, specifically, the rough shape of the bearing is turned; s2, soft grinding of double end faces; s3, softly grinding an outer circle; s4, turning a large hole; according to the machining and manufacturing method of the special-shaped bearing ring with the flange, the bearing strength can be enhanced and the machining precision can be guaranteed at the same time by improving the bearing design and the machining process.

The invention belongs to the technical field of ring piece rolling forming and manufacturing, and discloses a design method for a complex special-shaped ring rolling preformed blank with inner and outer grooves based on metal flow regulation and control. The shape of a preformed blank is designed to be a special-shaped section annular blank with the height of an outer side groove lower than that of an outer side groove of a target ring piece; the deformation amount of the pre-rolling step and the deformation amount of the final rolling step are distributed, the total deformation amount, the deformation amount of the pre-rolling step and the deformation amount of the final rolling step in the ring rolling process are determined through the outer diameter ratio, and the numerical value relation among the three deformation amounts is met; on the basis of the deformation distribution result, various size parameters of the preformed blank are determined, and the size parameters comprise the height, the outer side transition area bevel angle, the outer side groove depth, the outer side groove outer diameter, the end face outer diameter and the inner diameter. According to the method, metal flowing regulation and control are achieved through multi-step rolling, metal is effectively promoted to fill the cavity, the defect of under-filling is avoided, and the material utilization rate and the preformed blank design efficiency are improved.

The utility model discloses a ceramic wheel valve which comprises a valve body, a round valve element assembly is installed in the middle of a cavity of the valve body, and a valve rod used for being in matched transmission with the round valve element assembly is arranged in the middle of the valve body. The circular valve element assembly comprises a clamping spring, a bevel tooth bushing and a valve element, the bevel tooth bushing is installed on the periphery of the valve element, and the clamping spring is arranged between the bevel tooth bushing and the valve element in a sleeved mode. And the bevel tooth bushing is matched with a bevel gear at the tail end of the valve rod to form gear vertical transmission. A plurality of first flow holes are evenly distributed in the center of the valve element. A positioning column is installed in the center of the right valve seat in the axis direction and penetrates into a center hole of the valve element. A plurality of second flow holes with the same size as the first flow holes are evenly distributed in the end face of the end, close to the round valve element assembly, of the right valve seat. Angular travel transmission is achieved through transmission of the tail end of the valve rod and the special-shaped bevel gear on the outer contour of the round valve element assembly, the size of the valve is reduced, and installation flexibility is improved. Through the design that the valve element and the right valve seat correspond to the flow holes, buffering of media is achieved.

The invention provides a special-shaped test piece fatigue test loading device. The special-shaped test piece fatigue test loading device comprises an upper connector, a lower connector, a main shaft, a transverse shaft, a lower connector transverse shaft, a clamping plate, a bolt, a support and a clamping block. The test piece is connected through the main shaft and the two transverse shafts, and the support and the test piece are connected through the clamping plates and the bolts. The pull rods on the single-lug upper connector and the double-lug lower connector are clamped on an electro-hydraulic servo fatigue testing machine, and loading of a test piece is achieved through pulling and pressing of the testing machine on the lugs of the upper connector. The strain measuring device comprises a strain gauge and a signal transmission processing device, and the strain gauge is installed on a main examination part of the test piece according to test requirements. Through the fatigue test device, accurate load application of the special-shaped structural member is realized, and a fatigue test is completed.

The invention discloses a high-dimensional-precision large-diameter special-shaped ring forging and a production method and application thereof, and belongs to the technical field of metal material machining. According to the method, the special-shaped surface of the ring forging is machined by using the hot rotary swaging round pressure head on ring rolling equipment, so that the metal streamline is obviously damaged, the isotropy of the structure of the special-shaped surface is improved, and quenching deformation is reduced. Besides, by means of real-time adjustment of the rotary forging and pressing head, special-shaped ring forgings which are concave and cannot be machined through traditional grinding rings can be machined, the size precision of finished products can be remarkably improved, the follow-up machining amount is reduced, machining deformation is reduced, the single-side machining allowance of the special-shaped faces of the final finished products is not larger than 1 mm, and axial and radial deformation does not exceed 0.5 mm / m.

The utility model relates to the technical field of welding fixtures, and particularly discloses an automobile maintenance welding fixture which comprises a bearing mechanism and a clamping mechanism, the bearing mechanism comprises a base and a movable rail plate installed on the base, a movable groove is formed in one surface of the movable rail plate, and a movable protruding block is installed in the movable groove. The clamping mechanism comprises a second extrusion plate fixedly installed on the vertical plate and an open groove formed in the vertical plate, the open groove penetrates through the vertical plate, a sliding protruding block is slidably connected into the open groove, and one end of the sliding protruding block is fixedly connected with a first extrusion plate; according to the device, the movable rail plate with the two movable seats is arranged, some special-shaped workpieces with radians can be clamped and fixed, meanwhile, the stand columns, provided with the arc-shaped positioning plates, on the movable seats can contract or expand along with movement of the movable seats, and therefore circular workpieces of different sizes can be clamped and fixed; the device can be suitable for various types of workpieces, operation is easy and convenient, and practicability is high.

The invention discloses an industrial mechanical clamping jaw, and relates to the technical field of mechanical clamping jaws, the industrial mechanical clamping jaw comprises mounting plates, one end between the mounting plates is connected with a first hinge rod through a driving assembly, the front and rear ends of the mounting plates are both provided with second hinge rods, and the first hinge rod is connected with the second hinge rods; a clamping box is mounted at the lower end of one end between the second hinge rods; a clamping mechanism used for limiting the special-shaped workpiece is arranged on the inner side of the clamping box, and adjusting mechanisms used for adjusting the height of the clamping mechanism are arranged at the front end and the rear end of the clamping box. According to the industrial mechanical clamping jaw, the upper end of the clamping box can be matched with a workpiece, the workpiece is clamped, when the special-shaped workpiece needs to be clamped, a positioning hole is reserved in the surface of the special-shaped workpiece, and a limiting block on the outer side of a gear ring is clamped into the positioning hole to limit the position of the special-shaped workpiece; and then the special-shaped workpiece is clamped through the upper end of the clamping box.

The present invention relates to a special-shaped interface inflation sealing device for airtightness testing, which includes a bracket, a housing arranged on the bracket, an inflation sealing assembly arranged in the housing, and a cylinder arranged on the bracket for driving the inflation sealing assembly; the inflation sealing assembly includes a U-shaped frame with its tail connected to the driving end of the cylinder, a slider arranged in the U-shaped frame, a spring arranged between the inner end of the slider and the tail of the U-shaped frame, a guide post arranged at the outer end of the slider, a pressing block arranged at the head of the U-shaped frame and sleeved on the guide post, a pressing part arranged on the pressing block and sleeved on the guide post, a limiting part arranged at the head of the guide post with a diameter larger than that of the guide post, and a sealing ring sleeved on the guide post and located between the pressing part and the limiting part; an inflation hole is arranged in the guide post along the length direction of the guide post; since the inflation sealing mechanism of the present invention uses internal expansion for sealing, it can effectively seal the special-shaped interface, thereby improving the testing accuracy.

A method for closing a facility (1) for extrusion of a profiled element (2) comprising a roller (3) supported by a bearing (4), a tool module (10) intended to interact with the roller (3) so as to form an air gap (12) for shaping the profiled element (2), and at least a first head module (13) having a first extruder (14) comprises an engagement step (s1), during which the tool module (10) is urged against the first bearing (4) by a preload force (F_Z), in an engagement direction (Z), then a clamping step (s2) during which the tool module (10) is clamped between the first head module (13) and a second head module (23), on either side of the tool module (10), and by subjecting them to a clamping force (F_X), in a coupling direction (X) which is transverse to the engagement direction (Z).

The utility model provides a tool fixture of special-shaped joint, including fixture base, fixed structure and clamping structure, wherein, fixed structure and clamping structure are installed in fixture base respectively, and fixed structure is used to position special-shaped joint, and clamping structure can move relative to fixture base, and clamping structure includes clamping drive assembly, flexible clamping assembly and clamping assembly, and flexible clamping assembly and clamping assembly are connected with clamping drive assembly respectively, and special-shaped joint is positioned and clamped through the cooperation of flexible clamping assembly and fixed structure, and after special-shaped joint is positioned and clamped, special-shaped joint is fixed through the cooperation of clamping assembly and fixed structure, so as to reduce the positional deviation of special-shaped joint in the clamping process, thereby improving the inner hole machining precision of special-shaped joint.