62results about How to "Solving Concentricity Problems" patented technology

The invention relates to a tool used for machining blade holes of an axial flow pump impeller body. The tool comprises a rotary body fixed to a lathe spindle, wherein a scale dividing block is fixed on the rotary body, a fastening device used for fixing a workpiece on the scale dividing block is arranged above the scale dividing block, a first layer of positioning pin holes, a second layer of positioning pin holes and a third layer of positioning pine holes are formed in the outer side of the scale dividing block in the circumferential direction from inside to outside, and positioning pins matched with the positioning pin holes are arranged on the scale dividing block. According to the technical scheme, an installation method with the tool directly connected with a lathe is adopted, a rotating center in the direction same as the rotating direction of the lathe spindle is generated for each blade hole to be machined, and concentricity is achieved between the blade holes to be machined and the lathe spindle; by means of the cooperation between the scale dividing block and the rotary body and the utilization of a scale dividing mechanism, fast and accurate scale division is achieved easily when the blade holes rotate along with the scale dividing block during machining; a cylindrical section arranged on a pull rod enables the measuring basis of the critical dimension to be available during lathe machining.

The invention discloses a method for processing an internal boring for a long-distance part, which comprises the following steps: clamping two bent plates provided with central holes on the front and the back side surfaces of a bored part, passing a spotting spindle through the central holes of the part and the bent plates to cause the center of the part and the centers of the bent plates to coincide, and pressing and fixing the bent plates; rounding the four main shaft of a boring lathe by using a dial test indicator after detaching the part and the spotting spindle, adjusting the four main shafts of the lathe to be coaxial with the central holes of the two bent plates, and tightly fixing the four main shafts; placing a part to be bored on the boring lathe and positioning through the bent plates, using a second spotting spindle to pass through the bent plates and the part, pressing the part tightly after positioning the part, removing the spotting spindle, and starting boring. The front hole and the back hole of a processed part are coaxial, the hole distance is consistent, the functions of the four shafts of the lathe are brought into full play, the product quality is improved, the boring time is saved, and the production efficiency is improved.

The invention discloses a combined tap and drill, belongs to the technical field of machining tool design and manufacture and provides a drilling and tapping integrated combined tap and drill which can ensure internal thread machining quality. The combined tap and drill comprises a tap and drill body, a guide drill hole cutting edge is arranged at the tip end of the tap and drill body, and a bottom hole before tapping is drilled in the tapping process by the tap and drill body under cooperation of the guide drill hole cutting edge.

The invention provides a flexible internal supporting type guide head for pipe penetration of a heat exchanger. The guide head comprises a guide piece (1) and an elastic supporting piece (2) which is located below the guide piece (1) and fixedly connected with the guide piece (1), wherein the guide piece (1) comprises a guide head body (11), a connecting part (12) and any transition part (13); the outer diameter of the guide head body (11), the outer diameter of the connecting part (12) and the outer diameter of the transition part (13) are decreased gradually; and the elastic supporting piece (2) comprises a connecting shaft (21) and an elastic supporting strip (22). The invention further provides a method for conducting pipe penetration of the heat exchanger by using the flexible internal supporting type guide head. The flexible internal supporting type guide head has good rigidity and high precision, and the problem that guiding and concentricity cannot be achieved in the pipe penetration process of the heat exchanger is effectively solved; installation is easy, guiding is reliable, firmness and stability are achieved, and using is easy and convenient; and the success rate is high, the pipe penetration time is shortened, the pipe penetration precision is improved, and the breakage rate of heat exchange pipes, pipe plates and baffle plates in the pipe penetration process is decreased.

The invention relates to a driving clamping chuck, in particular to a driving device without a hydraulic station or a pneumatic room used as a power source, is used for high-precision and high-coaxiality non-circular curve and complex shape machining of rotary parts, and specifically relates to a self-tightening end surface driving chuck. The chuck comprises a tailstock tip, a chuck tip, a guide seat, a spring tip seat and a connecting disk; the tailstock tip is opposite to the chuck tip; a guide hole is formed in the guide seat; the connecting disk is fixedly connected with the output end of an oil cylinder of a machine tool; and the central axis of the tailstock tip is overlapped with the central axis of the chuck tip. The chuck tip is used for centering, the tailstock tip clamps a workpiece for matching with forwards pushing and guarantees the concentricity of two ends of the workpiece, the problem about coaxiality of a precision part due to secondary clamping in a traditional process scheme can be effectively solved, the chuck is simple in structure, free of auxiliary devices and simple and convenient to maintain.

The invention relates to the technical field of outer rotor motors, and specifically relates to a plastic packaging stator module. Bearing supports nested onto the inner circle of a stator iron core are arranged on two sides of the stator iron core respectively; a bearing used for being in transition fit with a rotating shaft is arranged in each bearing support respectively; the stator iron core and the bearing supports are plastically packaged through a thermosetting plastic to form the integral plastic packaging stator module; and the stator iron core and the bearing supports are formed intoone body through injection molding in an integral injection molding manner. A unified assembling standard is adopted, the phenomenon of circular run-out existing between relative bearings during theoperation of the rotating shaft due to different assembling standards in components are assembled in the prior art is avoided, and the problem of concentricity between the rotating shaft and the stator iron core is solved effectively.

The invention discloses a one-time clamping symmetrical turning method for a glass die. The method includes the following steps that the glass die is clamped by a first clamping disc, the first clamping disc is driven by a first drive shaft to rotate, and turning is conducted on one end of the glass die; after turning of one end is completed, the glass die is driven by the first clamping disc to move towards a second clamping disc, the turned end of the glass die is clamped by the second clamping disc, the first clamping disc releases the glass die, the second clamping disc is driven by a second drive shaft to rotate and conducts turning on the end, clamped by the first clamping disc, of the glass die, a rotary shaft of the first clamping disc and a rotary shaft of the second clamping disc are concentric and oppositely arranged along the rotary shafts, and the movement direction of the first clamping disc is parallel to the rotating shaft direction. The invention further discloses a machining device suitable for the machining method. By the adoption of the method, the coaxiality problem generated in the two-time clamping process can be solved, and machining efficiency is high.

The invention discloses a double-fed wind driven generator novel seam allowance assembling structure comprising a machine support (1) and an end cap (2). The machine support (1) is provided with an inner seam allowance (3). The end cap is provided with an outer seam allowance (4). A gap exists between an outer circumference surface of the outer seam allowance (4) of the end cap (2) and an inner circumference surface of the inner seam allowance (3) of the machine support (1). A plurality of positioning holes A (5) are arranged uniformly along a circumferential direction on the end cap (2). The machine support (1) is provided with positioning holes B (6) matched with the positioning holes A (5). Positioning pins (7) are arranged inside the positioning holes A (5) and the positioning holes B (6). The invention also discloses an assembling method for the assembling structure. The beneficial effects of the present invention are that: problems of air gap uniformity and concentricity of front and back end cap bearing chambers are solved; the consistency of the double-fed wind driven generator novel seam allowance assembling structure is good, so that smooth bearing maintenance in wind fields is possible; the structure is more stable, and scratches do not easily occur; long-term operation is facilitated; and the economical efficiency is good.

The invention provides a device for installing a cylindrical flange. The device comprises a mounting mechanism and a transmission mechanism, wherein the mounting mechanism comprises a mounting angle seat, a positioning block, a positioning plate, a handle, a handle screw, horizontal clamp forceps and a lifting ring, wherein the mounting angle seat serves as a mounting platform, the handle and thepositioning plate are fixed at the side, provided with a rib, of the mounting angle seat, the positioning block and the horizontal clamp forceps are fixed at the other side of the mounting angle seat,the positioning block is located in the vertical center line of the mounting angle seat, and the horizontal clamp forceps are uniformly distributed on the left and right sides of the mounting angle seat by taking the center of the mounting angle seat as the center of a circle and taking a fixed radius as a datum; the transmission mechanism comprises an angle seat supporting plate, a guide rail, ahand wheel, a ball screw, a drive sliding block, a guide rail sliding block, a limiting angle bracket and a bearing base, wherein the guide rail and the limiting angle bracket are arranged on a workbench, the guide rail sliding block is embedded in the guide rail and moves front and back along the back and rear of the guide rail, the angle seat supporting plate is fixed on the guide rail slidingblock, the drive sliding block is fixed on the angle seat supporting plate, and the whole mounting mechanism is vertically placed on the angle seat supporting plate of the transmission mechanism.

The invention discloses a novel needle cylinder, inner and outer sinker cam-caps and a sinker cap structure of a computer-controlled hosiery machine. The structure comprises a needle cylinder, an inner sinker cam-cap, an outer sinker cam-cap and a sinker cap, wherein the needle cylinder and the inner sinker cam-cap are overall or integrally formed, the outer sinker cam-cap is arranged at the upper part of the needle cylinder and sleeved with a bearing, and the sinker cap is fixed on an outer ring of the bearing. Original two single pieces, namely, the needle cylinder and the inner sinker cam-cap are replaced with an integrated part, and concentricity and synchronism are realized; the bearing is added to the outer sinker cam-cap, the sinker cap is directly fixed with the outer sinker cam-cap through the bearing, concentricity and synchronism of a machine part are ensured, and the problem of face runout of the sinker cap is solved; the mutually matching position of the sinker cap and a stitch cam can be changed; an original adjustable and invariable sinker cam is changed in the mode that the radial position of the sinker cam is variable under the action of curved slots due to the fact that a moving disc with curved slots can be moved on the sinker cap and performs forward or backward motion with the circle center under the action of a stepping motor.

The invention relates to the technical field of outer rotor motors, and particularly relates to a rotor aluminum casting structure of an outer rotor motor. The rotor aluminum casting structure comprises an injection mold main body, a rotor core is fixedly arranged in the injection mold main body, a plurality of liquid circulation holes are formed in the circumferential direction of the rotor core,the liquid circulation holes are arranged along the axial direction of the rotor core, a waterproof ring is arranged on one side of the rotor core, the waterproof ring is fixed in the injection moldmain body, a rotating shaft is coaxially arranged in the rotor core, a shaft seat is fixedly sleeved at the tail of the rotating shaft, the shaft seat is fixed in the injection mold main body, and therotor core, the waterproof ring, the shaft seat and the rotating shaft are packaged together through injection molding equipment to form a plastic package main body. The rotor aluminum casting structure provided by the invention effectively eliminates the assembly error caused by the conversion, and effectively solves the problem of the circular rotation of the rotating shaft, and as the rotor core, the waterproof ring, the shaft seat and the rotating shaft are packaged together, the problem of concentricity of the rotating shaft with the plastic package main body and the rotor core is effectively solved, and the service life of the motor is effectively prolonged.

The invention relates to a novel spinning cradle. The novel spinning cradle comprises a handle, a casing, an upper fixing clamp and a lower fixing clamp, and is characterized in that any one or more of the casing, the upper fixing clamp and the lower fixing clamp are not integrally formed. The novel spinning cradle has the beneficial effects as follows: the technology for the casing, the upper fixing clamp and the lower fixing clamp is simple, concentricity is high, and batch production can be realized.

The invention relates to a precision gang tool level bed numerically controlled lathe with a tailstock and belongs to the technical field of metal cutting machine tools. The lathe comprises a base, wherein a headstock seat and a bed are fixedly arranged on the base; a headstock unit is fixedly arranged on the headstock seat; a Z-axis linear rail and a Z-axis lead screw are fixedly arranged on the bed; a first Z-axis linear rail slide block is arranged on the Z-axis linear rail in a sliding fit manner; a middle planker is fixedly arranged on the first Z-axis linear rail slide block and connected with the Z-axis lead screw; an X-axis linear rail and an X-axis lead screw are fixedly arranged on the middle planker; an X-axis linear rail slide block is arranged on the X-axis linear rail in a sliding fit manner; a small planker is fixedly arranged on the X-axis linear rail slide block and connected with the X-axis lead screw; a multistation cutter turret is fixedly arranged on the small planker; a second Z-axis linear rail slide block is arranged on the Z-axis linear rail in a sliding fit manner; a tailstock unit is fixedly arranged on the second Z-axis linear rail slide block; and the bottom of the tailstock unit is connected with a hydraulic tailstock push cylinder. The lathe has positive significance for popularization of the numerically controlled machine tools.

The invention discloses a clamping die used for sensor base drilling. The clamping die comprises a die body of a single-layer structure. A set of workpiece holes are formed in the die body. A positioning block in interference fit with the corresponding workpiece hole is arranged in each workpiece hole. A positioning hole is formed in the center of each positioning block. The positioning holes areconcentric with the workpiece holes. The positioning blocks are used for achieving height positioning on sensor bases placed in the workpiece holes. The two rows workpiece holes are arranged in parallel. Two fixing pins are arranged in the die body in a penetrating manner and are used for fixing the positioning blocks in the two rows of workpieces correspondingly in a penetrating and inserting manner. The single-layer die body is adopted, the thickness of the die body is the same as that of an original double-layer die plate, and the die body is not likely to deform in the machining process when being heated; and the height positioning problem and the concentric problem are solved at the same time through the annular positioning blocks, on one hand, the positioning blocks are in interference fit with the workpiece holes, on the other hand, the positioning blocks are firmly fixed through the fixing pins, the phenomenon that the positioning holes of the positioning blocks and the workpiece holes are dislocated cannot occur, it is ensured that the workpiece holes and the positioning holes can be accurately concentric in the use process, and the product quality is ensured.

The invention provides a stepped annular part high-precision butt joint circular welding inner supporting tool and a design method and welding method thereof. Two sets of supporting petals are designed for two parts, and the outer diameter of each set of supporting petals is the same as the inner diameter of the corresponding supporting part; two sets of staggered wedge-shaped transmission shafts are designed, and a main shaft is sleeved with the wedge-shaped transmission shafts and used for driving the supporting petals to support outwards; and two flanges with locking bottoms are designed at the two ends and can be inserted into the inner sides of the ends of two parts for clamping and fixing, and finally welding of butt joint circular welds is completed. The stepped annular part high-precision butt joint circular welding inner supporting tool solves the problems of easy misalignment, substandard coaxiality and roundness and the like after welding of stepped circular welds with butt joint interface size differences, is suitable for high-precision butt joint circular welding and auxiliary post-welding fine machining of stepped variable-diameter annular (cylindrical or non-cylindrical) parts with butt joint welded junctions with size differences, can guarantee the weld quality and the post-welding shape and position size effectively and can improve the welding efficiency remarkably.

The invention relates to an HMCVT three-planet-row converging mechanism of a high-power tractor. The mechanism comprises a three-planet-row converging mechanism body, a tooth-embedded connection further-optimized planet gear mechanism and a tooth-embedded connection further-optimized planet gear mechanism. The three-planet-row converging mechanism body comprises a needle bearing, a sun gear P1, a shaft elastic check ring, a motor shaft driven wheel, a shaft elastic check ring, a deep groove ball bearing, a driving wheel sleeve welding part C3, planetary gear shafts P1P2 , a needle bearing spacer bush, planetary gears P1P3, a planetary carrier P1, an elastic pin, a gear ring P1, a planetary gear P2, a planetary carrier P2, a gear ring P2, a needle bearing, a driving wheel gear ring welding part C1 and a thrust copper gasket. The device solves the problem that a single-stage planetary gear transmission system cannot meet the engineering operation requirements of low speed, heavy load and large torque, the problem of concentricity of the sun gear, the planetary carrier and the gear ring of the HMCVT converging mechanism of the high-power tractor is solved, and the problems of uneven load and stress unbalance loading in the meshing process of the planetary row gears are solved.

The invention relates to a stable pressing cutter mechanism, a high-precision magnet loading device and an operating method thereof. The stable pressing cutter mechanism comprises a lower cross beam,a second driving mechanism, a pressing cutter assembly, an iron core and an elastic recovery mechanism, wherein the elastic recovery mechanism comprises second guide shafts and a compression spring, the two second guide shafts are provided with a pressing block in a threaded manner; the upper end of the iron core is fixed on the pressing block after passing through the pressing cutter assembly; and the second driving mechanism is positioned above the pressing block, and the second driving mechanism downwardly drives the pressing block and the iron core to move downwards. According to the stable pressing cutter mechanism, the high-precision magnet loading device and the operating method thereof, the upper end of the iron core is connected and fixed to the pressing block, the joint is flatlymilled so as to prevent rotation of the iron core; the pressing block is arranged and driven by means of the second driving mechanism so as to drive the iron core, the second guide shafts are arranged on two sides of the center of the pressing block to ensure that stress and motion directions of the iron core are vertically downward in the downward moving process driven by means of the second driving mechanism, the coaxiality problem of the iron core and the pressing cutter is solved, the service life of the iron core and the pressing cutter is prolonged, and the probability of occurrence ofthe magnet jamming phenomenon is reduced.