230results about How to "Guaranteed machining accuracy" patented technology

The invention discloses an automatic feeding and discharging device, which comprises a distribution mechanism, a dropping mechanism and a conveyance mechanism. The conveyance mechanism is arranged between the distribution mechanism and the dropping mechanism and consists of a base, a feeding mechanism, a lifting mechanism and a conveying mechanism are disposed on the base, the lifting mechanism is arranged between the feeding mechanism and the conveying mechanism, and the feeding mechanism is connected with the distribution mechanism, and is also connected with the dropping mechanism. By the aid of the joint action of the distribution mechanism, the feeding mechanism, the lifting mechanism, the conveying mechanism and the dropping mechanism, automatic feeding and discharging of pipes can be realized, labor intensity of feeding and discharging of the pipes can be greatly reduced, production efficiency is enhanced, and production cost is lowered.

The invention discloses a clamping deformation resistant jig for machining a large-diameter elbow. Three combined clamping blocks are arranged on a clamping base plate, each combined clamping block consists of an upper clamping block, a lower clamping block, a base plate and connecting bolts, inner sides of the upper clamping blocks and the lower clamping blocks are provided with circular arc-shaped gaps and form a circle consistent with the outer circumference of an elbow to be machined after closed, the upper clamping blocks and the lower clamping blocks are connected and fastened by the connecting bolts, and the base plates are arranged at the bottoms of the lower clamping blocks and are provided with chutes. Lock bolts pass through the chutes on the base plates of the combined clamping blocks and fix the combined clamping blocks on the clamping base plate after being fastened. In the invention, the large-diameter elbow is clamped by adopting a way of directly clamping a pipe blank in a surface-contact manner, thus the elbow does not generate a radial compaction force in the clamping process and is not easy to generate the radial forced deformation and the torsional moment; in addition, the clamping deformation resistant jig disclosed by the invention is applied to machining of a large-diameter thin-wall elbow machine, thereby ensuring the machining precision of the elbow.

The invention discloses a carbon fiber composite rotary ultrasonic milling and grinding device and a carbon fiber composite rotary ultrasonic milling and grinding method. The carbon fiber composite rotary ultrasonic milling and grinding device comprises an ultrasonic generator, an ultrasonic transducer, an amplitude transformation pole, a tool, a tool handle and a machine tool body. The carbon fiber composite rotary ultrasonic milling and grinding method is achieved by using ultrasound to assist in milling and grinding so as to process non-ablating carbon/ carbon composite materials. According to the carbon fiber composite rotary ultrasonic milling and grinding device and the carbon fiber composite rotary ultrasonic milling and grinding method, frequency of an ultrasonic power source used in the carbon fiber composite rotary ultrasonic milling and grinding method is consistent with inherent frequency of the amplitude transformation pole, and therefore the effect that vibration applied onto the amplitude transformation pole can cause resonance of the amplitude transformation pole is guaranteed; ultrasonic milling and grinding is adopted, and therefore surface quality of a carbon fiber composite work piece is obviously improved, and roughness of the carbon fiber composite work piece is reduced by about 16%-36%; ultrasonic machining is adopted, and therefore stress in the feed direction of a grinding head is reduced by about 44%, and stress in the downward pressing direction of the grinding head is reduced by about 46%; ultrasonic processing temperature rise is reduced by 29% from comparison between ultrasonic milling and grinding temperature and traditional milling and grinding cutting temperature of a carbon fiber composite.

Disclosed in the invention is an apparatus for boring a hole in a steel tube. The apparatus comprises a hole boring unit and at least one support unit. The support unit consists of a support plate and a hydraulic cylinder; a first chute is formed in the support plate and two first sliding blocks are arranged in the first chute; each first sliding block is provided with one support plate and the two support plates are parallel to each other; the two first sliding blocks are in transmission connection with the hydraulic cylinder by connecting rods with equal lengths. The hole boring unit contains a plurality of drilling heads, wherein the extending directions of the drilling heads are perpendicular to the extending directions of the support plates; and the drilling heads are distributed along the extending directions of the support plates; and horizontal distances between the drilling heads and the two support plates are equal. According to the invention, on the basis of the support unit design, the processing precision can be guaranteed even steel tubes with different diameters and different lengths are processed; and hole boring work can be carried out at different positions of the steel tubes can be carried out. With designs of a first extending plate and a second extending plate, sinking of walls of the steel tubes can be effectively prevented, thereby guaranteeing the processing quality.

The invention provides a method for machining a car differential shell. On the basis of ensuring the machining precision of a product, the development time of the product is shortened, the equipment investment is reduced, and machining of the car differential shell is realized by using general equipment. The invention adopts the technical scheme that the method for machining the car differential shell comprises the following steps of: (1) roughly turning an end face, an external circle and an axial inner hole at one end of the car differential shell on a numerical control lathe, and chamfering; (2) roughly turning an end face, an external circle, an axial inner hole and an annular groove at the other end of the car differential shell on the numerical control lathe, and chamfering; (3) finely turning the external circle in the step (1) and the external circle and the annular groove in the step (2) on the numerical control lathe; (4) finely machining the axial inner holes in the step (1) and the step (2) on a machining center; and (5) finely machining a cavity spherical surface on the machining center.

The invention discloses a composite ultrasonic elliptical vibratory cutting device. The device consists of an ultrasonic vibrating unit, a cylindrical servo cutter frame, hollow piezoelectric ceramic and a base, wherein a cutter is arranged at the output end of the ultrasonic vibrating unit; the ultrasonic vibrating unit is arranged in the hollow piezoelectric ceramic; the hollow piezoelectric ceramic is arranged in the cylindrical servo cutter frame; the base is arranged on the end part of the cylindrical servo cutter frame; and the cylindrical servo cutter frame is provided with four elastic hinge structures. Due to the design of symmetrical hinges, cylindrical ceramic is prevented from being deviated while driving the cutter; and the processing accuracy of the surface appearance of a nanoscale three-dimensional micro-structure of the cutter is realized through the gapless transmission of the elastic hinges. The ultrasonic vibrating unit adopts two exciting sources with different structures, so that ultrasonic vibration of the cutter in a longitudinal direction and a bending direction is realized during processing. The cutting device of the invention can be suitable for making shark skin imitation structural skin.

The invention discloses a high-precision board drilling platform. The high-precision board drilling platform comprises a base, wherein two lateral guide rails which are in parallel are arranged on two sides of the surface of the base; lateral sliding blocks are connected to the lateral guide rails in a sliding manner; a lateral movable board is fixedly connected to the tops of the lateral sliding blocks; a lateral screw rod which is parallel to the lateral guide rails is arranged at the middle part of the surface of the base through a lateral supporting seat; two ends of the lateral screw rod are connected with the lateral supporting seat through bearings, and one end of the lateral screw rod penetrates through the lateral supporting seat and is connected with a lateral motor; the lateral motor is fixedly connected with the side surface of the base; a lateral movable block is also mounted on the side surface of the lateral screw rod in a matching manner through screw thread pairs, and is fixedly connected with the middle part of the bottom surface of the lateral movable board. According to the high-precision board drilling platform disclosed by the invention, the processing precision is high, board debris are collected, boards can be fixed, the board can be placed flatly, and the qualified rate of board drilling can be increased.

The invention provides a valve seat material, which comprises the following components in percentage by weight: 55 to 63 percent of Cu, 1 to 5 percent of Pb, 1 to 5 percent of Mn, 0.03 to 0.12 percent of Sn, less than or equal to 5 parts per million of Cd and the balance of Zn and inevitable impurities. Due to the composition of the components, a valve seat has the good machining performance, the machining precision can be ensured, and the requirement of sealing is met. The valve seat material is low in Cd contents, and improves the environmental performance of the material; and in addition, due to the addition of the Mn, the valve seat material reduces the heat conductivity effectively. When the valve seat is used for a four-way reversing valve, high-temperature gas and low-temperature gas flow through the four-way reversing valve simultaneously, and because the valve seat is low in heat conductivity, heat loss between high-temperature and low-temperature coolants can be reduced, and the energy-saving effect of air conditioners is improved effectively.

The invention relates to a processing method of a chemical centrifugal pump shaft. The processing method comprises the following steps of 1) center hole drilling: a three-claw chuck is used for clamping a blank excircle, and a center drill is used for drilling center holes at two ends of the shaft; 2) rough turning: a machine core clamp head is used for propping the shaft, each excircle is subjected to rough turning, 0.2mm of working allowance is retained, each step is subjected to rough turning, and 1mm of working allowance is retained; 3) tempering treatment; 4) finish turning: the machine core clamp head is used for propping the shaft, the maximum excircle on the shaft is subjected to the finish turning to reach the drawing requirement, various screw threads are subjected to finish turning to reach the drawing requirement, the length of each step is subjected to finish turning to reach the drawing requirement, and in addition, the chamfering is carried out; 5) grinding: the excircles in the rest positions on the shaft are ground to the size according to the drawing; 6) inspection: the inspection is carried out according to the drawing requirement; 7) milling: key grooves are milled according to the drawing requirement; 8) inspection: the work procedure 7 is inspected according to the drawing requirement. The processing method has the advantages that the processing is convenient, the processing precision can be ensured, and the production efficiency is improved. The processing method is suitable for the processing of industrial pump shafts.

The invention discloses a combined Mecanum wheel hub which comprises a hub body and a plurality of roller supporting frames. Connectors are arranged on the rim of the hub body. The connectors are distributed in a circumference array mode by using the axis of the hub body as a center line. Each connector comprises a side plane and at least one positioning groove, wherein the side plane is arranged on the hub body and is parallel to the axis of the hub body, and the positioning groove is axially formed in the side plane in the axial direction of the hub body. A roller axial hole is formed in the upper end of each roller supporting frame. A positioning block is arranged at the lower end of each roller supporting frame. An inclined included angle is formed between the extending direction of each positioning block and the axis direction of the corresponding roller axial hole. Each connector in the rim is connected with one roller supporting frame. The positioning blocks of the roller supporting frames are embedded into the positioning grooves in the rim. The roller supporting frames are fixed to the hub body. According to the combined Mecanum wheel hub, machining is facilitated due to the fact that the split combined structure is adopted, the machining precision is ensured due to the fact that the positioning embedded structure is adopted, and the roller supporting frames of different dimensions can be combined with the hub body to form Mecanum wheel hubs of different dimensions.

The invention relates to a full automatic numerical control connecting rod milling potential machine tool. The machine tool comprises a charging funnel, a discharging funnel, a feeding mechanism, a spindle box, a workbench, a manipulator, a cutter and a cutter bar, wherein the charging funnel is connected with the feeding mechanism; the feeding mechanism is arranged on one side of the workbench; the upside of the workbench is provided with the cutter; the cutter is arranged on the cutter bar; and one end of the cutter bar is tightened by a tension rod, while the other end is fixed on a cuttersaddle by a quick chuck. A workpiece to be processed is arranged in the charging funnel, fed by the feeding mechanism, and is automatically taken and put in a processing station by the manipulator; the manipulator takes the work piece out after the processing is completed, feeds the workpiece to the discharging funnel, and simultaneously puts the next workpiece to be processed in the processing station. Compared with the prior art, the full automatic numerical control connecting rod milling potential machine tool has the characteristics of high processing speed, high precision, stable processing quality and the like.

The invention provides an assembling and machining process for a steam cabinet of a steam turbine and a nozzle group. A jig tool is arranged for the assembling and machining process for the steam cabinet of the steam turbine and the nozzle group. Concentric circular bump and circular shrinkage pool are respectively arranged on both sides of the jig tool. Assembling holes of the steam cabinet of the steam turbine and the nozzle group are respectively machined by using the circular bump and circular shrinkage pool as positioning reference, so that the steam cabinet of the steam turbine and the nozzle group can be precisely positioned in the vertical and horizontal directions. Therefore, the assembling holes of the steam cabinet of the steam turbine and the nozzle group are consistent in position, so that the quality and machining precision of assembly of the steam cabinet of the steam turbine and the nozzle group can be ensured. According to the method in the process, the assembling holes in the steam cabinet of the steam turbine and the nozzle group can be conveniently and precisely machined, so that the assembling requirement of the steam cabinet of the steam turbine and the nozzle group can be satisfied.

The invention discloses a drill jig used for circumferential and axial hole combination processing of a cover plate of an electrohydraulic servo valve, which comprises a drill jig body (1), a drill jig plate (3), a fixed drill bush (4) and a special drill bush (6); wherein, the drill jig body (1) is rectangular and the drill jig plate (3) is arranged at the top; the fixed drill bush (4) is arranged on the drill jig plate (3); the special drill bush (6) is arranged at lateral face of the drill jig body (1); a plurality of workpieces arranged between the drill jig body (1) and the drill jig plate (3) are fixed and pressed with a screw (2) and a locating pin (6). The invention has the advantages of simple structure, low manufacturing cost, good manipulability, long service life, assured processing precision, improved processing efficiency and uneasy damage.

The invention relates to the technical field of integral spinning forming type hemispherical shell molded surface precision machining, in particular to an integral spinning hemispherical shell dot-matrix flexible fixing and supporting device, which comprises a tooling base and a dot-matrix flexible supporting mechanism; the tooling base is composed of a base upper flat plate, a base lower flat plate, a plurality of base shaping plates and a plurality of connecting rings, all the connecting rings are of circular structures, and the radiuses of the connecting rings are sequentially reduced fromtop to bottom; the dot-matrix flexible supporting mechanism comprises a plurality of flexible supporting assemblies installed on the connecting rings; and the flexible supporting assemblies all pointto the center of a hemispherical shell. An integral flexible positioning and supporting system formed by multiple sets of dot-matrix hydraulic floating supporting cylinders is matched with a pressingmechanism of an inner profile machining tooling to fixedly press an integral spinning hemispherical shell product blank onto the supporting mechanism, and the product machining precision is guaranteed; and the machining clamping efficiency and reliability of the inner profile of the whole spinning hemispherical shell product are improved.

The invention discloses a manufacturing method of a blind-hole compressor impeller. The manufacturing method comprises the following steps: step 1, installing an impeller blank on a numerical-control vertical lathe, turning the bottom end surface, a bottom end outer circle, a back arc and a large outer circle, and machining a blind hole by utilizing a reamer; step 2, clamping the large outer circle by utilizing three claws, leveling the bottom end surface, and turning a meridian plane and a top end surface; step 3, locating by utilizing the bottom end surface, connecting a bolt with the blind hole by threads, straining the bolt, clamping the back arc and the bottom end outer circle by utilizing a clamp, machining a threaded hole, and milling an inner hexagonal hole, blades and runner. By adopting the manufacturing method, the machining precision can be guaranteed, the production efficiency is improved, and the manufacturing cost is reduced.

The invention provides a machining fixture and method of eccentric bushings for cone crushers. The fixture comprises a mandrel and a pressure plate matching with the mandrel. Two ends of the mandrel are provided with a small cone frustum and a cylinder respectively. The middle of the mandrel is provided with a large cone frustum. The cylinder is provided with a first ejector pin hole. The small cone frustum is provided with a second ejector pin hole. The pressure plate is provided with a third ejector pin hole. The axis penetrating the first ejector pin hole and the second ejector hole and the axis penetrating the first ejector pin hole and the third ejector pin hole form a first included angle; the axis of the outer surface of an eccentric bushing and the axis of the inner surface of the eccentric bushing form a second included angle; the first included angle and the second included angle are different. The machining fixture and method of eccentric bushings for cone crushers has the advantages that machining precision of eccentric bushings is guaranteed effectively, operational reliability of the cone crusher with the eccentric bushing machined by the method is improved, efficient operation of the cone crusher can be guaranteed, yield is increased, and consumption is lowered.

The invention discloses a method of accurate location of a diamond turning tool in a micro-turning process, and belongs to the field of micro-manufacture. The method of accurate location of the diamond turning tool in the micro-turning process is characterized by comprising extracting an image of a tool through a high-precision charge coupled device (CCD) measuring technology, calculating a coordinate position of a tool nose in a CCD image system, detecting a three-dimensional locating error of the diamond turning tool, comparing a position, obtained through measurement, of the tool nose with an original position of the tool nose, carrying out error compensation on line by being matched with an accurate locating platform of a tool system, and improving locating accuracy of the tool nose. The method of accurate location of the diamond turning tool in the micro-turning process is a non-contact type detection method which is capable of achieving location accuracy, in a submicron level, of the diamond turning tool, and meanwhile is simple in needed equipment, and convenient to implement.

The invention provides equipment for automatically polishing and chamfering the both ends of construction steel bar materials. The equipment comprises a mounting bracket, and the mounting bracket is provided with a process moving mechanism, a feeding device, a cutting and polishing device, a clamping and grinding device and a polishing and rear corner chamfering device; the feeding device is usedfor conveying bars to the cutting and polishing device, and the cutting and polishing device comprises a clamping mechanism a, a polishing and front corner chamfering mechanism, a cutting mechanism and a power mechanism b; the clamping mechanism a is used for clamping the bars, and the power mechanism b is used for providing cutting and rising power for the cutting mechanism, and walking power forthe polishing and front corner chamfering mechanism; the cutting mechanism is used for cutting the bars under the effect of the cutting and rising power, and the polishing and front corner chamferingmechanism is used for polishing the free ends of the bars and chamfering front corners of the bars under the effect of the walking power; and the polishing and rear corner chamfering device is used for polishing the bars and chamfering rear corners of the bars.

The invention discloses a cutting device for airtight encapsulation of quartz glass. The device includes a rack body, the rack body is equipped with a cutting knife mechanism, the cutting knife mechanism consists of a cutting knife fixator fixed on the lower surface of a fixator 1, telescopic cylinders fixedly mounted on both sides of the cutting knife fixator's lower surface, and telescopic headsfixedly mounted on one sides of the telescopic cylinders, the position of glass can be adjusted through cooperation of a glass clamping mechanism and linear motors, a glass cutting knife is employedto cut glass, the operation is convenient, the machining precision can be ensured, no personal harm can be caused to operators, and the work efficiency also can be effectively improved, a spray mechanism is employed to dispose the dust generated during cutting, thus being conducive to cleaning air and reducing environmental pollution. The cutting device provided by the invention is added with a support rod, a fixed mount, an alarm bell, a spring, a limit plate, an electric push rod, a support platform, a movable frame, a fixed plate, a nut seat, a motor, a screw rod and a groove, and realizesthe fast clamping function of glass plates.

The invention discloses a welding clamping method for an automotive suspension control arm. The welding method comprises the steps that a ball head connecting end clamping mechanism, a sleeve connecting end clamping mechanism and a ball head pin mounting end clamping mechanism are arranged on a working platform; before welding, firstly, a top cover and a bottom cover are clamped together through the ball head connecting end clamping mechanism and the ball head pin mounting end clamping mechanism, wherein the top cover and the bottom cover are located at a ball head connecting end and a ball head pin mounting end; then, a sleeve is tightly pressed onto a sleeve connecting end through the sleeve connecting end clamping mechanism; and then, welding is conducted. By means of the welding clamping method, machining precision of the automotive suspension control arm can be guaranteed; the operation is convenient and fast to conduct; and machining efficiency is improved.

The invention discloses a ram deflection deformation compensation device. A pull rod is arranged at the upper part of a ram along the axis direction of the ram and in a pull rod hole on the ram; a counter bore at the front end of the ram is matched with an end part circular bead at the front part of the pull rod; and at the rear part of the ram, the pull rod is fastened by a force transmission nut. Due to adoption of the technical scheme, the pulling force of the pull rod is adjusted continuously; straightness of the ram at each position in the moving and extending process is not changed; rigidity when the ram and a main shaft system move is improved; the rotary precision of the main shaft is effectively improved; and the processing precision of parts when a machine tool is used for cutting is guaranteed. Fit clearance is eliminated; predeformation occurs between the contact surfaces of the rams; the production efficiency is improved; manpower and material resources are saved; and innovative features are achieved in the aspects of technique, performance and structure.

The invention provides a manufacturing method for aluminum honeycomb cores. The manufacturing method comprises the following steps: (S1) aluminum foil strip substrates are rolled or punched to form corrugated flaky substrates; and (S2) multiple flaky substrates are laminated in sequence; and two adjacent flaky substrates are welded to form the aluminum honeycomb cores. The manufacturing method ofthe aluminum honeycomb cores solves the problems of complicated procedures in a manufacturing method of the aluminum honeycomb cores in the prior art, irregular core cells, low strength and low production efficiency of prepared aluminum honeycomb cores caused by difficult control of the manufacturing method of the aluminum honeycomb cores for thicker aluminum foils, and limitation of the product application fields.

The invention discloses a machine tool chuck clamping detection device, and belongs to a machine tool chuck part. When a workpiece is not clamped in place, the machining precision is affected. The device comprises a hollow pull rod, a detection seat mounting block, a pressure detection valve and three same positioning detection mechanisms, wherein the pull rod is connected with the detection seat mounting block arranged at the front end face of a chuck body, and the three same positioning detection mechanisms are arranged on the detection seat mounting block at intervals along the circumference; each positioning detection mechanism comprises a positioning column, a detection ejector rod and a detection seat arranged on the detection seat mounting block, wherein the rear section of the positioning column is arranged in the groove cavity of the detection seat, the hollow cavity of the positioning column and the groove cavity form a piston cavity, the front section of the detection ejector rod is in zero clearance fit with the cavity wall of the positioning column, the bottom of the groove cavity of the detection seat is provided with an axial through hole and a lateral through hole, and the rear section of the detection ejector rod is provided with a piston cover for covering the axial through hole; the cavity of the pull rod, the axial through hole and an air passage in the detection seat mounting block are connected to form an air path; and the rear end of the pull rod is connected with the pressure detection valve, and workpiece clamping detection is realized by detecting the pressure change of air.

The invention discloses a 3D printer spray head with nozzle diameters changed in real time. The 3D printer spray head with the nozzle diameters changed in real time comprises a feeding throat pipe, a heating block arranged on the outer end portion of the feeding throat pipe, a nozzle butt joint position is arranged on the lower end face of the heating block, and a heating block discharging opening with an inner end communicating with a feeding inner pipe of the feeding throat pipe is arranged at the nozzle butt joint position. The 3D printer spray head with the nozzle diameters changed in real time further comprises a plurality of nozzles. A walking track groove is formed in the lower end face of the heating block, and the multiple nozzles are arranged in the walking track groove in a sliding manner. The nozzle butt joint position is arranged on the bottom wall of the walking track groove. A drive frame is arranged among the multiple nozzles in a mutual fixing manner. A drive motor is in transmission connection with the drive frame and is used for driving the multiple nozzles to slide in the walking track groove and enabling the multiple nozzles to switch at the nozzle butt joint position, and when each nozzle slides and is switched to the nozzle butt joint position, a nozzle feeding opening communicates with the heating block discharging opening in a butt joint manner. The 3D printer spray head has the beneficial effect that the nozzle diameters can be switched in real time in the printing process.

The invention discloses a housing drill, which comprises a working table, a base for the placement of a housing is arranged on the working table, a first drilling head module, a first motor for driving the first drilling head module to act and a first feeder for driving the first drilling head module to move are arranged on one side of the base, a positioning mechanism which is used for positioning the housing when the housing is placed on the base is arranged on the base, a holddown for pressing the housing on the base and a driver for driving the holddown to move up and down are arranged over the base, a second drilling head module, a second motor for driving the second drilling head module to act and a second feeder for driving the second drilling head module to move are arranged on the other side of the base, both the first drilling head module and the second drilling head module are multi-spindle drilling heads, and drill bits on the first drilling head module and the second drilling head module are correspondingly and coaxially arranged. The housing drill can effectively ensure the coaxiality between the mounting holes of both sides of the housing.

The invention relates to the technical field of pipe fitting processing, in particular to a pipe fitting double-end pipe contracting device. The device comprises a rack, a positioning mechanism arranged on the rack, a feeding frame arranged on the rack, a two-way adjusting pipe contracting mechanism arranged on the rack and located at two sides of the positioning mechanism, and a discharging framearranged on the rack, wherein the two-way adjusting pipe contracting mechanism comprises adjusting pipe contracting mechanism bodies which are the same in structure and arranged on the two sides of the positioning mechanism correspondingly, and each adjusting pipe contracting mechanism body comprises a corresponding fixed frame fixedly mounted on the rack in a vertical state, a corresponding rotating disc vertically mounted on the corresponding fixed frame in a mode of being capable of rotating around the axis thereof, and a corresponding rotating disc driving mechanism arranged on the bottomof the rack, wherein a plurality of hydraulic cylinders are mounted on the rotating discs, and the output end of each hydraulic cylinder is provided with a corresponding pipe contracting mold. According to the device, automatic feeding and discharging can be achieved, pipe contracting can be automatically conducted on the two ends according to pipe fittings with different diameters, the processing precision is guaranteed, and the working efficiency is improved.

The invention discloses a measuring tool for measuring dimensional tolerance between a carrying surface and a reference surface of a fir-type race of a steam turbine rotor and a measuring method of the measuring tool and belongs to the technical field of steam turbine processing. The invention aims to solve the problem that the dimensional tolerance between the carrying surface and the reference surface of the fir-type race of the steam turbine rotor cannot be measured by adopting a general measuring tool. The measuring tool comprises an adjusting nut, a specimen column, a clamping locating piece, a hexagon socket cap screw, a micrometer head, a screw piece and a set screw. The measuring method of the measuring tool comprises the following steps: zeroing the measuring tool, measuring the dimensional tolerance, and acquiring the dimensional tolerance. The measuring tool and measuring method disclosed by the invention can be widely applied to measuring the dimensional tolerance between the carrying surface and the reference surface of the fir-type race of the steam turbine rotor.

The invention discloses a blank mold combination surface clamp. The blank mold combination surface clamp comprises a rotary table tailstock mother plate structure, side locating and clamping mechanisms, a middle locating mechanism and a side direction locating mechanism. The two side locating and clamping mechanisms are installed on the two sides of a mother plate, the middle locating mechanism is installed in the middle of the mother plate, and the side direction locating mechanism is installed behind the mother plate. The blank mold combination surface clamp has the advantages that a movable pressing plate automatically corrects the process step surfaces of parts when pressing the parts towards locating supporting blocks, the content of two surfaces can be machined after one time of clamping, and part machining is easy and convenient to operate; just the locating supporting blocks and the movable pressing plate need to be changed when remodeling is carried out, repeated tool setting is not needed, the work time is saved, the location accuracy is high, and therefore the production accuracy is guaranteed, and the qualification rate of machining is increase; in addition, the double-station clamp is adopted and can machine two parts at a time, the two parts share the middle locating mechanism, and therefore materials are saved and the machining efficiency is improved.

The invention discloses a method for machining a submerged pump impeller. The method comprises the steps that firstly, a three jaw chuck clamps a large outer circle of the impeller, and rough turning is performed on an impeller opening ring, a plane A and a front cover board after calibration; secondly, surfacing adjusting is performed, the three jaw chuck clamps the opening ring, rough turning is performed on a plane B after calibration, drilling is performed, rough turning is performed on a rear cover board and a sealing surface, and rough turning is performed on the large outer circle; thirdly, rough turning is performed on the plane B, boring is performed, the rear end cover and the sealing surface undergo finish turning so as to meet the requirements of a drawing, and chamfering is performed; fourthly, turning is performed on a core rod, the impeller is sleeved in the core rod and screwed through a nut, finish turning is performed on the plane A (1), the overall length is controlled according to the requirements of the drawing, the opening ring and the front end cover (3) undergo turning so as to meet the requirements of the drawing, the large outer circle undergoes finish turning so as to meet the requirements of the drawing, and chamfering is performed; fifthly, checkout is performed; sixthly, a static equilibrium test is performed as the requirements; seventhly, a keyway is inserted; eighthly, checkout is performed; ninth, cleaning, burring, oiling and stockroom entering are performed. The method for machining the submerged pump impeller facilitates machining, ensures machining precision and improves production efficiency, and is suitable for machining of industrial pump impellers.

The invention relates to the technical field of stamping dies, in particular to an automatic bonding and stamping die in stator and rotor core dies. The shortcomings in the prior art are overcome, andthe automatic adhesive stamping die comprises a base; a lower die, guide pillars arranged symmetrically, and fixing plates arranged symmetrically are fixed to the top of the base by bolts separately;a top plate is fixedly installed on the tops of the guide pillars, and a lift pressing plate is slidably arranged at the exteriors of the guide pillars; after completion of stamping and bonding treatment through inner workpieces, the pressure held by a second pressure sensor is reduced due to coating melting, and fed back to the interior of a discharging cylinder through pressure reduction signals, so that the discharging cylinder acts once to pull a discharge sliding seat to slide toward the both sides in a side groove; thus, a product falls down through a material falling slot automatically, and automatic discharge is achieved; bonding treatment is finished in the die through the stamping die, so that the stamping die does not need to be placed in heating equipment for processing; and alarge amount of operation time and manpower are saved, and the production efficiency is high.