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

Clamping deformation resistant jig for machining large-diameter elbow

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.
Owner:扬州华宇管件有限公司

Carbon fiber composite rotary ultrasonic milling and grinding device and method

InactiveCN104647147AGuaranteed machining accuracyUltrasonic machiningGrinding
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.
Owner:DALIAN KANGSAIPU TECH DEV

Apparatus for boring hole in steel tube

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.
Owner:WUHU BEISI SCI & TECH PARK

Composite ultrasonic elliptical vibratory cutting device suitable for making shark skin imitation structural skin

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.
Owner:BEIHANG UNIV

High-precision board drilling platform

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.
Owner:SUZHOU ZHILVE INTELLECTUAL PROPERTY OPERATION CO LTD

Processing method of chemical centrifugal pump shaft

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.
Owner:JIANGSU YAMEI PUMP IND GRP

Combined Mecanum wheel hub

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.
Owner:CHINA UNIV OF MINING & TECH

Full automatic numerical control connecting rod milling potential machine tool

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.
Owner:SHANGHAI HUIDIAN ELECTROMECHANICAL TECH

Integral spinning hemispherical shell dot-matrix type flexible fixing and supporting device

PendingCN112571089AGuaranteed machining accuracyThe product fixing and clamping process is fast and efficientWork clamping meansPositioning apparatusPhysicsEngineering
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.
Owner:CAPITAL AEROSPACE MACHINERY

Machining fixture and method of eccentric bushings for cone crushers

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.
Owner:SHENYANG HUAYANG MACHINERY

Equipment for automatically polishing and chamfering both ends of construction steel bar materials

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.
Owner:芜湖七创工业设计有限公司

Machine tool chuck clamping detection device

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.
Owner:ZHEJIANG RIFA AVIATION DIGITAL EQUIP

3D printer spray head with nozzle diameters changed in real time

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.
Owner:ZHEJIANG IND & TRADE VACATIONAL COLLEGE

Pipe fitting double-end pipe contracting device

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.
Owner:陈春

Blank mold combination surface clamp

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.
Owner:WUXI RUIZHEN PRECISION MACHINERY

Method for machining submerged pump impeller

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.
Owner:JIANGSU YAMEI PUMP IND GRP

Automatic bonding and stamping die in stator and rotor core dies

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.
Owner:昆山铭钜精密模具有限公司
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