2623results about "Turning machines" patented technology

The invention relates to the technical field of turning machining, in particular to a numerical control turning machine tool for fastener machining, which comprises a machine shell, a tool rest column body, a tool apron body and a chuck, and further comprises a surface cover shell bolted to the tool apron body, a plurality of auxiliary rollers are rotatably connected to the inner side of the cover shell, a magnetic synchronous belt is further arranged on the inner side of the cover shell, and the magnetic synchronous belt is arranged on the outer side of the tool apron body. The side, close to the housing, of the tool apron body is further in bolting connection with a fixing plate, and the surface of the fixing plate is in bolting connection with a square electromagnet. The square electromagnet is started, and when the tool apron body moves, metal chips on the top and the side edge of the tool rest column body are attracted to the surface of the magnetic synchronous belt, so that the situation that the magnetic synchronous belt is directly contacted with the tool rest column body to be stained and damaged in a large area is avoided; in the process of adsorbing the metal chips, the metal chips cannot move slightly on the surface of the tool rest column body, the tool rest column body is not prone to being abraded, and the service life of the tool rest column body is prolonged.

The invention relates to the technical field of machining, in particular to a flexible clamp for turning a variable-diameter thin-wall cylinder component and a turning method. The flexible clamp comprises a supporting mechanism and a flexible supporting clamp mechanism which are detachably connected, the supporting mechanism comprises a supporting rod, the supporting rod is detachably connected with the flexible supporting clamp mechanism, and the flexible supporting clamp mechanism comprises a plurality of first supporting assemblies arranged in the circumferential direction. The flexible supporting clamp mechanism can be inserted into the variable-diameter cylinder section of the variable-diameter thin-wall cylinder component in the axial direction of the variable-diameter thin-wall cylinder component, and the first supporting assembly is adjusted to extend in the radial direction so that the first supporting assembly can abut against the inner wall of the variable-diameter cylinder section. The flexible supporting clamp mechanism can effectively avoid workpiece deformation caused by lateral component force, and the flexibility of the flexible clamp is improved. In the machining process, the elastic deformation and vibration of the barrel are controlled within a very small range, and the machining precision is remarkably improved.

The invention discloses a turning device for an electronic control valve of an automobile refrigeration compressor, and belongs to the field of metal processing.The turning device comprises a machine tool, a through rotating groove is formed in the upper surface of the machine tool, the front end of the rotating groove extends to the front surface of the machine tool, a part base is arranged in the rotating groove, and first motors are fixed to the left side and the right side of the machine tool correspondingly; two sliding ways are formed in the front surface of the machine tool, an output shaft of the first motor penetrates into the sliding ways and is fixedly provided with a screw rod, and the outer surface of the screw rod is in threaded connection with a telescopic frame. The machining efficiency is greatly improved, the time needed for machining a single part is shortened, the production yield is increased, the requirement for large-scale production is met, the part base is driven by the motor to turn over, and machining at different angles is achieved.

The invention relates to the technical field of turning equipment, in particular to an automobile motor shell turning device. Comprising a supporting table, a rotating mechanism and baffles. A guide rail is fixedly installed on one side above the supporting table, a sliding table is slidably installed above the guide rail, a fixing rod is fixedly installed at the center position above the sliding table, turning parts are movably installed on the two sides of the surface of the fixing rod, and the turning parts are slidably adjusted above the guide rail through the sliding table. The rotating mechanism comprises a rotating disc and a clamping assembly, the clamping assembly is fixedly installed on the periphery of the surface of the rotating disc, the clamping assembly comprises a clamping snap ring, and the clamping snap ring is telescopically adjusted on the periphery of the surface of the rotating disc; the baffle is fixedly installed at the intersection position of the turning piece and the surface of the clamping snap ring, and a collecting groove is formed below the baffle. And the rotating disc rotates along with the rotating disc, so that the automobile motor shells of different sizes are clamped and fixed, convenience and rapidness are achieved, and subsequent turning treatment on the automobile motor shells is facilitated.

The invention relates to the technical field of roller machining, and provides a roller forming device and method.The roller forming device comprises a base which serves as a basic mounting part and is used for providing a basic mounting face and providing space for treatment of metal chippings; the fixing frame is fixedly connected to the top end of the base and used for providing a machining platform for forming treatment of the roller; the compression mechanism is arranged in the base and used for compressing and quantitatively transferring the concentrated metal chippings; the blowing mechanism is arranged in the middle of the top end of the base and used for assisting in collection of metal scraps; and the fixing mechanism is arranged in the fixing frame and used for supporting and fixing the roller. Through the arrangement of the fixing mechanism, the swing amplitude of the roller can be limited, the situation that the roller cannot be effectively fixed or collides with other parts due to swing is prevented, meanwhile, the position of the roller can be actively adjusted when the roller deviates to one side, the working process is simplified, and the placing and fixing efficiency is improved.

The invention relates to the technical field of precision automatic lathe machining, in particular to a precision automatic lathe workpiece machining method which comprises the steps that a double-spindle synchronous machining mode is adopted to achieve seamless connection of rough machining and finish machining, clamping errors are reduced, a servo motor drives a tool shaft to achieve nanoscale feeding compensation, and traditional mechanical transmission precision limitation is broken through. The integrated infrared temperature measurement module monitors the temperature of a cutting area in real time and dynamically adjusts the spraying angle and flow of cooling liquid based on machining parameters, machining thermal deformation is effectively controlled, and a dynamic weight self-adaptive interpolation model is established to balance machining efficiency and contour precision. Main shaft load, tool vibration and workpiece deformation data are collected in real time through a multi-sensor data fusion system, axial following errors are corrected through an iterative learning control algorithm, contour consistency is improved, surface defects are eliminated through a nanoscale vibration compensation mechanism, machining efficiency is improved, and machining precision is improved.

The invention discloses a turning machine tool for continuous machining, and belongs to the technical field of turning machine tools, the turning machine tool comprises a machine tool body, a spindle box is arranged on the machine tool body, a rotating assembly used for clamping a plurality of workpieces is connected to the spindle box, the workpieces are arranged in an annular array, and a connecting assembly is sleeved with the output end of the spindle box. According to the lathe, the multiple workpieces to be machined are turned under the same machining condition, the consistency of the machining size, the shape and the surface quality can be guaranteed, when the multiple workpieces to be machined are continuously machined, the temperature of the lathe body and the temperature of the chuck are relatively stable, and the machining efficiency is improved. And the influence of thermal deformation caused by temperature change on the machining precision is reduced, and the operation frequency and the working intensity of operators can be reduced through batch clamping and unloading, so that the labor cost is reduced, the operators can complete more machining tasks in a shorter time, and the labor productivity is improved.

The invention relates to the technical field of processing machine tools, and discloses an intelligent forming machine tool for metal processing machinery manufacturing, which comprises a rack, a transverse moving assembly, a linear motor, a workbench, a spindle motor and a frame body, an annular rail is arranged at the upper end of the rack, and two arc-shaped guide rails are jointly connected to the upper end of the annular rail; the two arc-shaped guide rails are installed on the two opposite sides of the frame body respectively, a propelling mechanism is installed in the frame body and used for fixedly installing a spindle motor, positioning assemblies for adjusting the inclination angle of the propelling mechanism are installed on the two opposite sides of the frame body, and a shell is arranged below the frame body. The shell is connected with the propelling mechanism and connected to an output shaft of the spindle motor in a sleeving mode, and an unbalance loading resisting mechanism is installed in the frame body. According to the intelligent forming machine tool manufactured through the metal machining machine, the machine tool can machine a workpiece of a special-shaped curved surface structure, and pressure can be actively applied to offset the unbalance loading force borne by the turning head and the transmission shaft.

The invention relates to an automatic clamping transmission chuck for an axle numerical control lathe. The automatic clamping transmission chuck comprises a power supply control box, a stop key, a hexagon socket screw I, a travel switch, a copper pin, a spring and a center body, the power supply control box is fixed on one side in the center body; the stop key is arranged on one side of the rear end face of the center body in the radial direction. The inside hexagonal bolt I is mounted on the stop key; axial cylindrical grooves are respectively formed in the upper side and the lower side of the front end of the tip body; the copper pins are respectively and correspondingly connected in the cylindrical grooves in a sliding manner; the spring is axially arranged between the inner end of the copper pin and the cylindrical groove; the travel switches are fixed to the two sides of the interior of the center body, and the signal input ends of the travel switches on the two sides are correspondingly connected with the inner sides of the two copper pins respectively. One-time clamping machining of the axle can be completed, time and labor are saved, the machining efficiency is improved, and the machining quality of the axle can be improved. The problems that traditional clamping wastes time and labor, the coaxiality of secondary clamping is poor, and automatic clamping cannot be achieved are effectively solved.

The invention provides efficient integrated machining equipment for automobile hubs, and relates to the technical field of hub machining, the efficient integrated machining equipment comprises a turning numerical control table, a hydraulic expansion mandrel, a turning assembly and a turning rack, the turning numerical control table is fixedly installed at the side end of the turning rack, the hydraulic expansion mandrel is fixedly installed on the turning numerical control table, and the hydraulic expansion mandrel is fixedly installed on the turning rack. The turning assembly is fixedly installed on the turning machine frame, a recycling mechanism for recycling waste liquid is arranged on the turning machine frame, a processing mechanism for processing the waste liquid is arranged on the turning machine frame, and the recycling mechanism comprises a turning protective cover, a cooling spray head and a V-shaped guide plate. According to the device, the V-shaped guide plate, the coarse separation box, the stainless steel wire net, the recycling box, the filtering layer and the scrap box are matched, and functional modules such as waste liquid diversion recycling, preliminary separation, metal scrap adsorption, scraping and collection, waste liquid fine filtering and waste scrap temporary storage are compactly integrated on turning equipment; and extra arrangement of a huge and dispersed external system for waste treatment is avoided.

The invention relates to the technical field of lathes, in particular to a cylinder sleeve machining multi-tool lathe with tool rests convenient to disassemble and assemble, which comprises a lathe body, a moving table is mounted on the lathe body, a bearing vertical plate is fixedly arranged at one end of the moving table, and mounting through holes are symmetrically formed in the bearing vertical plate; a bearing vertical plate is arranged on the movable table, positioning grooves are symmetrically formed in the movable table, locking insertion holes are symmetrically formed in the two ends of the interior of each positioning groove, matched connecting plates are symmetrically and fixedly arranged on the two sides of the end, close to the bearing vertical plate, of the movable table, and insertion channels are formed in the matched connecting plates. Positioning of the tool rests is achieved through cooperation of the bearing positioning plate and the positioning grooves, then the driving connecting plate is pushed, synchronous installation of the two tool rests can be achieved under the action of the installation inserting rods, meanwhile, automatic locking of the driving connecting plate can be achieved, installation firmness of the tool rests is guaranteed, and operation is easy, convenient and rapid.

The invention relates to the technical field of annular part machining, and discloses an automatic production line for annular parts, which comprises a first numerical control lathe and a second numerical control lathe, the first robot can clamp a to-be-machined workpiece to the first numerical control lathe and the second numerical control lathe for machining, and a turnover mechanism used for assisting the first robot in turning over the to-be-machined workpiece is arranged at the position between the first numerical control lathe and the second numerical control lathe; the first material cache area is located in the clamping range of the first robot. According to the automatic production line for the annular parts, rapid switching among different stations in the product machining process is achieved, manual carrying, clamping and other work are replaced, the production efficiency is effectively improved, and the product production period is shortened.

The invention discloses a vertical lathe and a using method for furnace pipe machining, and relates to lathes, the vertical lathe comprises a machining table, a turning head is arranged on the machining table through a longitudinal moving assembly, two machining stations are arranged on the machining table, and the longitudinal moving assembly can drive the turning head to move between the two machining stations; the two machining stations are each provided with a machining assembly, and each machining assembly comprises a clamping table, a fixing unit, an overturning unit and a rotating unit. Through overturning of the clamping tables, chippings on the clamping tables fall and cannot be accumulated on the clamping tables, through the two clamping tables and the movable turning head, the machining efficiency of the turning head cannot be reduced when the chippings are cleaned by the clamping tables, and when the turning head conducts machining on one clamping table, the supporting assembly supports the clamping tables, so that the machining efficiency of the turning head is improved. The clamping table capable of being overturned is prevented from being unstable, the stability is improved, meanwhile, the overturned clamping table is cleaned through the cleaning brush, the cleaning effect on the clamping table is better, and chippings are prevented from affecting part machining.

The invention relates to the technical field of shaft part machining, in particular to shaft part turning multi-station machining equipment which comprises a multi-station machining table and a rotary table rotationally installed on the multi-station machining table, and a plurality of containing holes evenly distributed in the circumferential direction are formed in the top of the rotary table. Depth adjusting mechanisms which are in one-to-one correspondence with the placing holes and are positioned below the placing holes, and fixing mechanisms for fixing the shaft parts are mounted on the rotary table. According to the device, through linkage cooperation of the clamping assembly, the second movable plate, the fixing assembly, the connecting assembly and the driving assembly, multiple shafts with different diameters can be fixed at the same time, meanwhile, the driving assembly drives the second movable plate to move downwards, when the clamping assembly clamps the shafts, the fixing assembly on the second movable plate conducts secondary locking on the clamping assembly, and therefore the clamping assembly is fixed. And meanwhile, the second movable plate and the rotary table are connected and locked through the connecting assembly, it is ensured that the position of the second movable plate is stable, and the locking firmness of the fixing assembly on the clamping assembly is further improved.

The invention relates to the technical field of shaft part machining devices, in particular to a turning device for metal shaft part machining, which comprises a machine tool body, a guide rail and a chuck, a frame body is arranged on the guide rail, one end of the frame body is slidably connected with a sleeve, one end of the sleeve penetrates through the frame body and extends to the outside of the frame body, and the chuck is arranged on the guide rail. A clamping mechanism is arranged at the end, located outside the frame body, of the sleeve, a material leaking hole is formed in the lower surface of the sleeve and communicates with the frame body, a strip-shaped groove is formed in the upper surface of the sleeve, and a discharging assembly is arranged in the strip-shaped groove; according to the metal shaft cutting device, the clamping assembly, the discharging assembly, the buffering assembly and the like are arranged and used in cooperation, when the metal shaft is cut off, the clamping assembly can clamp the metal shaft, in this way, when the metal shaft is cut off, the metal shaft cannot directly fall off, and then the problem that the metal shaft with huge kinetic energy directly falls off and is prone to damage is avoided.

The invention generally provides a folded compact inflatable structure transformable into a robust load-bearing structure within a matter of seconds.

The invention belongs to the technical field of ball valve production equipment, particularly relates to a ball valve machining lathe and method for machining a raw material into an accurate spherical valve element, and aims to overcome the defects that in the prior art, after the valve element is turned, the valve element cannot be polished, and when the valve element is turned, waste chips cannot be conveniently collected. The lathe comprises a base, the base is of a box structure, a discharging hole is formed in the inner wall of the top of the base, a material guiding plate is installed in the discharging hole, the bottom of the material guiding plate extends into the base, a baffle is fixedly installed on one side of the top of the base, and a driving mechanism is connected to the baffle in a penetrating mode. According to the valve element machining device, a turned valve element can be ground and polished, so that good convenience can be provided when the valve element is machined, sweeps can be prevented from splashing everywhere when the valve element is machined, and meanwhile, the sweeps can be conveniently collected and cleaned.

The production equipment comprises a base and a top frame, a first rotating and fixing mechanism is fixedly installed on one side of the top end of the base, and a second rotating and fixing mechanism is fixedly installed on the side, close to the first rotating and fixing mechanism, of the top end of the base; a bearing ring blank to be machined is arranged between the first rotating and fixing mechanism and the second rotating and fixing mechanism, an inner cutting mechanism is fixedly arranged at the bottom of the top frame, and an outer cutting mechanism is fixedly arranged at the top of the top frame. The first rotating and fixing mechanism comprises a first longitudinal frame, and the first longitudinal frame is fixedly installed on one side of the top end of the base. According to the bearing ring machining device, the first rotating and fixing mechanism and the second rotating and fixing mechanism are arranged, and the internal cutting mechanism and the external cutting mechanism are used in cooperation, so that bearing ring blanks can be subjected to external expansion positioning; and in addition, synchronous turning machining of the inner side and the outer side of the bearing ring blank is achieved, the turning machining efficiency of the bearing ring blank is improved, and the overall machining efficiency of the bearing ring is effectively improved.

The invention provides a high-precision spinning forming process method for a ribbed cylinder section, and aims to solve the problems of diameter expansion, unevenness in deformation and the like in the traditional spinning process. The process comprises the following steps: performing double-sided turning on a prefabricated cylinder blank to ensure the inclination, mounting a spinning mold with a rib structure, heating the cylinder blank, and sleeving the heated cylinder blank on a mold with an inner cross groove to realize interference fit. And then, a three-spinning-roller spinning machine is started for spinning, the plasticity of the material is improved through induction heating, and the material flows into a cross groove of the mold. And after spinning is completed, the spinning roller is replaced with a turning tool, the outer surface is turned, and finally the part is taken out. According to the method, the inner diameter is controlled through material thermal expansion coefficient difference and diameter compensation, and boundary dimension homogenization is achieved through the induction heating and in-situ turning technology. The process is suitable for materials such as aluminum alloy and high-strength steel, the size precision of the cylinder section is remarkably improved, and technical support is provided for overall near-net forming of aircraft cylinder sections such as tactical projectiles. The spinning process is optimized, and the quality and performance of a final product are improved.

The invention discloses a chamfering machine for machining mechanical parts, and belongs to the technical field of chamfering machines, the chamfering machine for machining the mechanical parts comprises a fixed rack, and a sliding limiting mechanism is fixedly mounted in the center of the top of the fixed rack; a rotary limiting mechanism is fixedly mounted at the center of the top of the sliding limiting mechanism, a rotary feeding mechanism matched with the rotary limiting mechanism is further fixedly mounted at the top of the fixed rack, and two sets of symmetrically-arranged turning and chamfering mechanisms are slidably mounted on the two sides of the top of the sliding limiting mechanism correspondingly; a servo driving mechanism used for driving the two turning and chamfering mechanisms is installed at the bottom of the sliding limiting mechanism. According to the rotary feeding mechanism simple in design, the left feeding disc and the right feeding disc are controlled by the first servo motor to move, so that the conveying, machining pause and conveying and discharging processes are smoother, the machining pause time is shortened, and meanwhile the overall machining efficiency is improved.

The invention relates to a machining device for optical workpieces, to a use of a cross-table, and to a method for facing an optical workpiece, wherein the workpiece is first fed to a tool along a roller-supported feed axle and is then machined by facing only by axial movement of the tool. Furthermore, the workpiece being machined is moved along a transverse axis with hydrostatic mounting during machining. This enables a simple and cost-effective design and highly precise machining.

The invention belongs to the technical field of flange machining, and particularly relates to a stainless steel flange turning device which comprises a base frame, a turning structure is arranged at the upper end of the base frame and comprises a lifting plate, the lifting plate is arranged at the upper end of the base frame, and an end face turning tool, an outer circle turning tool and a grooving tool are arranged on the surface of the lifting plate. And a clamping structure is arranged at one end of the turning structure. By arranging the adjusting structure, after a flange piece is turned, the opening plate can move towards the inner wall of the center of the flange piece, so that the flange piece is fixed by the opening plate, then the transfer clamp can move to wrap the flange piece, at the moment, a motor located on one side of the transfer clamp is started, the flange piece can be clamped, and the flange piece can be fixed. And then in the reset process of the telescopic air cylinder, the flange piece can be transferred to be far away from the turning structure by the transfer clamp, so that the flange piece can be automatically taken out after turning, and the taking-out work of the flange piece can be continuously carried out through the reciprocating work of the telescopic air cylinder.

The invention relates to the field of lathes, in particular to a wind power bolt slender shaft turning special machine which comprises a machine body composed of a shell and a base. A main shaft unit, a sliding table unit and a tool rest unit are arranged on the base; the self-avoiding positioning unit is arranged on the main shaft unit, the self-avoiding positioning unit comprises a telescopic positioning assembly and a locking assembly used for locking the positioning assembly, and the positioning assembly is used for conducting double positioning of axial jacking and radial clamping on the wind power bolt; the positioning assembly can contract in the machining process so as to avoid a tool feeding space. The retractable positioning assembly is matched with the locking assembly for linkage unlocking, when the tool rest unit moves to a clamping area, unlocking can be automatically triggered, the claw petals are retracted, the machining space of a tool is completely avoided, and therefore integrated continuous machining of a wind power bolt shaft body and threads at the two ends is achieved. And the procedures of end waste cutting and secondary clamping are thoroughly eliminated.

The invention relates to the technical field of turning devices, and discloses a sheet metal turning device and a stainless steel sheet metal turning method.The sheet metal turning device comprises a lathe bed, a main shaft installed in the lathe bed, a guide rail, a feeding base and a tool rest, and is characterized in that a vibration disc, a driving assembly, a clamp and an overturning assembly are further installed in the lathe bed; and the clamp is movably mounted on the vibration disc. The driving assembly, the vibration disc, the clamp and the overturning assembly are arranged on the lathe bed, when a stainless steel metal plate workpiece is machined, rough machining is conducted firstly, then the workpiece on the main shaft is transferred and fixed to the vibration disc through the driving assembly, the clamp and the overturning assembly, and then the stress of the workpiece is eliminated through vibration; and finally, the workpiece is transferred again and fixed to the main shaft for finish machining, the turning machining of the stainless steel sheet metal part can be adapted through the rough machining, stress removing and finish machining modes, the probability of workpiece deformation is reduced, and the machining quality of products can be improved.

The automatic machining numerical control roller lathe comprises a roller lathe body, a feeding and discharging mechanism is arranged at one end of the roller lathe body, and a carrying mechanism is arranged on the rear portion of the roller lathe body and the rear portion of the feeding and discharging mechanism. The roller lathe main body comprises a rack, the rack is provided with a feed assembly and a center assembly in a sliding mode, and the rack is provided with a first adjusting lead screw for driving the feed assembly to move in a reciprocating mode; a chuck, a driving motor and a transmission assembly are mounted on the rack, the transmission assembly is driven by the driving motor, and the chuck is driven by the transmission assembly; the cutter feeding assembly comprises a first base, a sleeve matched with the first adjusting lead screw is installed on the first base, a second base is installed on the top of the first base in a sliding mode, and a rotating base is rotatably installed on the top of the second base. According to the invention, the rotating seat is arranged, so that the rotating adjustment of the fixed seat is realized, and the angle adjustment of the cutter is realized.

The invention is suitable for the technical field of cutout cock valve balls, and provides an integrated valve ball machining device for a cutout cock, the integrated valve ball machining device for the cutout cock comprises a detection assembly, and a repairing assembly is arranged on one side of the detection assembly; the detection assembly comprises a detection processing machine tool, a supporting frame, a driving motor, a driving table, a supporting plate, a first limiting strip, a second limiting strip, a fixing piece and a detection piece. The repairing assembly comprises a bearing plate, a sliding rail, an electric sliding table, a transverse plate, an adjusting air cylinder, a displacement plate, a vertical plate, an extension column and a repairing cutter. Through the design of the detection assembly, the surface of the turned spherical valve element can be subjected to circular surface detection, so that the surface quality of the spherical valve element meets the standard, the machining precision of a product is improved, the service life of the product is prolonged, and the production efficiency and the quality stability of the product are improved.

The invention relates to a multi-tool-position metal cutting numerical control lathe which comprises a lathe body, a main shaft, an annular piece, a tool clamping mechanism and a feeding mechanism. The main shaft is rotatably mounted on the lathe body; the annular piece and the main shaft are coaxially arranged; the multiple tool clamping mechanisms are arranged in the circumferential direction of the annular part at intervals. Each tool clamping mechanism comprises a sliding base, a clamping base, a clamping plate and a limiting driving assembly. The sliding seat is mounted on the annular piece in a sliding manner along the radial direction of the annular piece; the clamping seat is rotatably mounted on the sliding seat; the multiple clamping plates are installed on the clamping base in a sliding mode, and the multiple clamping plates are arranged in a circular array mode with the axis of the clamping base as the circle center. The limiting driving assembly can drive the clamping plate to move so as to clamp the tool, and the limiting driving assembly can further limit rotation of the clamping base. Therefore, the cutters can be clamped, the angles of the cutters can be adjusted, and then the CNC system controls the feeding mechanism to drive the cutters to cut workpieces at the same time.

The invention relates to the technical field of pipe end turning and rounding, and in particular to a device for turning and rounding the pipe end of a welded pipe. In order to solve the problem that the inner diameter and outer diameter of the pipe cannot be turned at the same time during the existing pipe turning, which increases the time cost of processing and reduces the processing efficiency; the invention can clamp the welded pipe through a clamping component, then clamp the left end of the welded pipe body into the inside of the welded pipe groove, and then start the motor A and the electric telescopic rod B at the same time. When the movable connecting rod and the rounding component come to the right end of the pipe mouth of the welded pipe body, start the motor B to rotate the disc, and the rotating disc will expand the arc plate, so that the honing bar contacts the inner diameter of the welded pipe body for turning, and then start the motor to let the active roller rotate with the welded pipe body. At this time, a lathe tool holder equipped with a turning tool will turn the outer diameter of the welded pipe body, and at this time, the inner and outer diameters of the pipe mouth of the welded pipe body are turned at the same time, thereby improving the processing efficiency of the welded pipe body.

The invention discloses a crankshaft turning eccentric tool and a machining process, and belongs to the technical field of crankshaft machining. The crankshaft eccentric turning tool comprises a flange plate, the flange plate is installed on a machine tool spindle, an eccentric block is arranged on one side of the upper portion of the flange plate, an end cover is arranged above the eccentric block, an eccentric gasket is arranged between the eccentric block and the end cover, an installation rod is further arranged above the flange plate, and an expansion sleeve is connected into the installation rod in a sleeved mode. A through groove for the crankshaft to penetrate through is formed in the center line of the expansion sleeve, and a pull rod is arranged below the expansion sleeve. The problems that an existing clamping tool is complex in working procedure and long in model changing time, and the dimensional stability is difficult to guarantee are solved. The requirements of crankshafts of different specifications are met by changing the thickness of the eccentric gasket, the model changing step is simplified, the size precision and quality stability of products are guaranteed, the production efficiency is effectively improved, and the production cost is reduced.

The invention relates to the technical field of eccentric shaft machining lathes, in particular to an eccentric shaft machining lathe with an eccentric center structure, which comprises a lathe main body, a fixed frame is fixedly connected to one side of the lathe main body, a movable frame is arranged on the fixed frame in a sliding fit manner, and a rotating seat is rotatably connected to the movable frame; a transmission mechanism is rotationally connected to the rotating seat, a stabilizing ring frame is rotationally connected to the rotating seat, a follow-up rotating ring is rotationally connected to the stabilizing ring frame, an eccentric block center mechanism is fixedly connected to the follow-up rotating ring, and an eccentric shaft is clamped and fixed to a three-jaw chuck on the lathe body; the eccentric block center mechanism is arranged on the follow-up rotating ring, the two angle-adjustable center plates abut against the fan-shaped eccentric block on the eccentric shaft, when the eccentric shaft rotates for machining, the fan-shaped eccentric block on the eccentric shaft is more stably and accurately supported, vibration, unbalance and deformation are reduced, and the machining precision and quality are improved.