59results about How to "Guaranteed beat" patented technology

The invention relates to a flexible welding production line for a side wall plate of an automobile, which is used for improving the flexible production capacity of an autobody welding line body, and comprises a clamp body, a trolley, a frame, a drive mechanism and a PLC (programmable logic controller) control system. The clamp body is installed on the trolley which is connected with the drive mechanism. The trolley is controlled by the PLC control system and dragged by the drive mechanism to reciprocate on a track of the frame to convey the clamp and workpiece of the welding line body. The drive mechanism is arranged on the frame which is fixed on the level ground. The flexible welding production line for the side wall plate of the automobile provided by the invention has the advantages of stable performance, strong universality and high degree of automation, and according to the flexible welding production line, not only is the work efficiency of the welding operation improved remarkably and the production pace of the factory is ensured, but also the flexible production capacity of the welding line body is improved, the capital investment on devices is lowered, the period of new products in batch production is shortened, and large economic benefits is brought for enterprises.

The invention provides a multifunctional appearance detection device, which comprises a rotating plate, a detection system, a driving device and an installation rack, and is characterized in that the rotating plate can rotate freely, the rotating plate is provided with a plurality of detection stations used for placing workpieces, each detection station is provided with a detection core shaft which can rotate freely and is used for arranging a workpiece in a sleeved manner; the detection system comprises a shooting device used for detecting the outer surface of the workpiece, and the shooting device is arranged at the periphery of the rotating plate along the radial direction of the detection core shaft; the driving device is arranged below the rotating plate so as to drive the rotating plate to rotate intermittently in a stepping manner; the rotating plate, the detection device and the driving device are installed on the installation rack, the pace of detection for each workpiece is guaranteed through driving the rotating plate to rotate intermittently in a stepping manner, and the detection efficiency is improved; and meanwhile, the shooting device is arranged at the periphery of the rotating plate along the radial direction of the detection core shaft so as to detect the peripheral surface of each workpiece, and is enabled to detect the peripheral surface of each workpiece in an omnidirectional manner by being matched with free rotation of the detection core shaft, so that the detection accuracy is greatly improved.

The invention relates to the field of wire-arranging technology of a multi-head wire-rewinding machine, in particular to a wire-arranging mechanism of the multi-head wire-rewinding machine and a numerical control wire-arranging method. The wire-arranging mechanism of the multi-head wire-rewinding machine comprises a stander, a PLC controller, a screw rod driving device, wire-arranging guide wheels, a reversing guide wheel and a wire-arranging guide wheel driving device, wherein the wire-arranging guide wheel driving device is connected with the wire-arranging guide wheels; the screw rod driving device comprises a screw rod, a screw rod nut, an approach switch, two screw rod bearing seats, two synchronous belt pulleys, a synchronous belt and a constant speed motor, wherein the screw rod nut is connected with the wire-arranging guide wheel driving device; the PLC controller is connected with the approach switch and the constant speed motor; and the PLC controller is provided with a forward rotation monitoring timer, a reverse rotating monitoring timer, a millisecond-level reversing timer and a speed increasing and reducing timer. The invention not only reduces the interference amongwires and the production accidents and improves the wire-arranging quality and finished product wire quality, but also simplifies the structure, is easy for operation and reduces the manufacturing and maintaining costs.

The invention discloses a method of assembly and precision calibration of a numerical control four-axis circular ring die deep hole drill machine tool. The machine tool is used for machining a stainless steel ring die in a feeding stuff granulator, a vertical type rotary working platform is adopted in the middle of the machine tool, and four-axis double-station deep hole main shafts are adopted on two sides of the machine tool. When the machine tool machines, a workpiece is installed on a numerical control index table, a four-claw chuck is used for clamping a ring die of the workpiece, and the situation that the outer circle of the ring die beats and the end face of the ring die beats is guaranteed. Numerical control sliding tables are symmetrically arranged at the left and the right, and ball screws and ball guide rails are installed on the sliding tables. The machine tool is controlled by a servo motor to move front and back so as to enable a main shaft guide sleeve box to move, when the machine tool works, guide holes are tightly attached to the surface of the workpiece, and when moving cuttings are carried out, the machine tool moves on the ball guide rails to achieve the machining of holes in the outer circle of the ring die.

The invention discloses a machining tool for a brake drum. The machining tool comprises a three jaw chuck and a locking cap, wherein the axis of the locking cap is the same as that of the three jaw chuck; the locking cap is connected with the body of the three jaw chuck through a half sleeve; a space enclosed by the locking cap, the body of the three jaw chuck and the half sleeve has a shape corresponding to the appearance of a machined brake drum; and the surface of the body of the three jaw chuck is provided with positioning columns corresponding to screw holes on the machined brake drum. Through experimental production, the entire production line has stable quality and stable yield after the bottleneck problem of a lathed braking surface is solved.

The invention discloses an automatic drilling device of a short material sawing and drilling all-in-one machine. The automatic drilling device comprises a sawing, discharging and conveying device, a transverse material turning and temporary storage device, a transverse stepping feeding device, a drilling device and a drilling discharging device, wherein the sawing, discharging and conveying device is used for longitudinally conveying sawn bars; the transverse material turning and temporary storage device is used for transversely turning and conveying the longitudinally-placed bars to a temporary storage material frame; the transverse stepping feeding device is used for feeding the bars on a material taking station to a drilling supporting station in a stepping mode; the drilling device comprises a drilling machine base and a drilling supporting device, the drilling supporting device is used for supporting the bars conveyed by the transverse stepping mechanism, and a drill bit component and a drilling clamping device are longitudinally arranged on the drilling machine base in a sliding mode; and the drilling discharging device is used for discharging the bars on the drilling supporting device. According to the automatic drilling device, the bars can be automatically conveyed to the drilling device one by one to be drilled after the bars are sawn, so that the production efficiency is improved, and meanwhile, the occupied area of the whole equipment is smaller.

The invention discloses a method and device used for guaranteeing the wall thickness of a metal plate forming thin-wall ring part. The device comprises a ring body (1) and a pressing plate (2); the upper end face of the ring body (1) is a plane which is provided with an annular groove; the cross section shape of the annular groove is consistent with the cross section shape of the non-machining portion of the thin-wall ring part; the pressing plate (2) is located above the annular groove; and the bottom face of the pressing plate (2) is a plane, and the pressing plate (2) can move in the axialdirection and the radial direction of the ring body (1). During machining, firstly, the planeness standard exceeding position of the to-be-machined portion of the metal plate forming thin-wall ring part is compressed, and after it is guaranteed that the planeness of the portion is qualified, then remaining non-compressed positions are machined to the required thickness; and then the positions machined to the required thickness are compressed, and after it is guaranteed that the planeness of the portions is qualified, remaining non-compressed positions are machined to the required thickness.

The invention relates to a composite connection type hydraulic knife handle. The composite connection type hydraulic knife handle comprises a main knife handle body and an elastic thin-wall inner ringarranged in the main knife handle body, wherein a hydraulic oil cavity is arranged between the main knife handle body and the elastic thin-wall inner ring; the elastic thin-wall inner ring is arranged as a barrel thin-wall structure with two thick ends and a thin middle part; and the side outer rings of the two ends of the elastic thin-wall inner ring make contact with the support surfaces of inner holes of the main knife handle body. The main knife handle body and the elastic thin-wall inner ring are fixed in a manner of combining brazed connection and interference fit connection, the effectof stress on the connection performance of the main knife handle body and the elastic thin-wall inner ring is reduced, the joint of the main knife handle body and the elastic thin-wall inner ring isprevented from tear under the high pressure state, and therefore the service life of the hydraulic knife handle is prolonged. Meanwhile, by improving the structure of a piston rod and the structure ofa piston sleeve, the piston sleeve is quickly maintained, the overall sealing performance of a hydraulic access is improved, and the overall strength of the hydraulic knife handle is improved.

The invention discloses a method for machining end faces of a connecting shaft bearing outer ring. The method comprises the following steps of grinding the double end faces of the connecting shaft bearing outer ring obtained after quenching, conducting accurate grinding on the end faces of the connecting shaft bearing outer ring after the double end faces are ground, wherein a special rolling wheel clamp is adopted for conducting clamping in the process of conducting accurate grinding on the end faces, machining a cutting edge out of the end face of a grinding wheel, and by controlling axial movement of the grinding wheel, conducting accurate grinding machining on the end faces of the connecting shaft bearing outer ring by means of the grind wheel end face where the cutting edge is located. The special rolling wheel clamp comprises a ball-shaped backer and a rolling wheel clamp body, the rolling wheel clamp body is connected with a lathe head of a grinding lathe, when a workpiece is clamped, the ball-shaped backer is sleeved into an inner hole of the connecting shaft bearing outer ring through the boss end, and a ball joint at the other end abuts against the magnetic pole of the lathe head and the plane of a plane backer assembly. The method has the advantages of being high in machining precision and efficiency.

The invention discloses connecting rod pin hole fine grinding equipment and a crankshaft production process and relates to the technical field of crankshaft machining. According to the main points ofthe technical scheme, the connecting rod pin hole fine grinding equipment comprises a rack and a grinding shaft installed on the rack horizontally rotationally. A driving mechanism drive the grindingshaft is connected to one end of the grinding shaft. A cooling pipe is connected to the rack and is provided with a nozzle extending to the grinding shaft. A vertically arranged installing plate is fixed to the rack through a strut. A U-shaped groove is formed in the middle of the installing plate, and the grinding shaft can penetrate through the U-shaped groove. A jacking block and a clamping block are fixed to one end of the installing plate. The jacking block is located on one side of the U-shaped groove and extends in the axial direction of the grinding shaft. The clamping block is provided with a clamping groove. A limiting plate is connected to the other end of the installing plate. The limiting plate rotates around the axis perpendicular to the installing plate and relative to the installing plate. The end, away from the rotation axis, of the limiting plate is provided with a clamping connection part matched with the clamping groove. Through the connecting rod pin hole fine grinding equipment and the crankshaft production process, the problem of high circle jumping in the use process due to low precision of existing crankshaft machining is solved, a shaft rod of a crank is centered, fine grinding is conducted on a connecting rod, and thus precision of the crankshaft is improved.

The invention relates to a preparation method of myocardial ischemia/reperfusion model in rats. The preparing method comprises the following steps in turn: I, anesthetizing, namely placing rats in an induction box, performing inhalation anesthesia by using 2 to 3 percent isoflurane, taking the rats out of the induction box, allowing the rats to continuously inhale isoflurane under a mask to maintain anesthesia; II, cutting off the chest skin and extruding the heart, disinfecting the chest skin, cutting off the chest skin, expanding the subcutaneous muscle to enter the chest, and directly extruding the heart out of the intercostals; III, ligating the left anterior descending coronary artery, ligating a starting end of the left anterior descending coronary artery by using a slipknot, sending the heart back to the chest after ligation, making one end of the ligating line positioned out of the chest, sewing and closing the chest; and IV, loosening the ligating line after ischemia is finished, directly loosening the ligating line exposed out of the chest, and restoring blood supply in the coronary. The invention is simple in operation, short in time consumption and relatively high in survival rate of the rats.

The invention discloses a machining device used for a split-type ball bearing. A core shaft with one end being a stepped shaft is arranged, and a to-be-machined part, a limiting ring, a gasket and a nut are sequentially mounted on the stepped shaft of the core shaft; one end of the to-be-machined part makes contact with the end face of a shaft shoulder of the core shaft, and the other end of the to-be-machined part makes contact with one end of the limiting ring; and the other end of the limiting ring makes contact with the gasket, and the other end of the gasket makes contact with one end ofthe nut. Two to-be-machined semi-ball bearings are simultaneously clamped by the core shaft with the stepped shaft and then are closely combined through the limiting ring to ensure that jumping of theparts conforms to machining requirements. According to the machining device used for the split-type ball bearing, machining of the two semi-ball bearings in pairs is achieved, the machining device isreliable and safe in using, so that machining efficiency is doubled, and the material utilization of products is increased by one time.

The invention provides a positioning tool for a gear pitch circle clamp. The positioning tool comprises a clamp body; the upper end of the clamp body is provided with a gear workpiece mounting groove;the clamp body is provided with a positioning disc on the end face of a gear workpiece at the lower end of the gear workpiece mounting groove; the clamp body is provided with a plurality of wedge blocks at the periphery of the gear workpiece mounting groove; the clamp body is provided with a retainer at the upper portion of the gear workpiece mounting groove, the retainer comprises a pressing plate pressed on the gear workpiece, and ball structures are arranged at the portions, corresponding to the wedge blocks, of the lower end of the pressing plate and comprise balls which are in contact fit with the two toothed surfaces of the pitch circle of the gear workpiece and the end surfaces of the wedge blocks respectively; the upper end of the retainer is provided with a plurality of elastic pressing structures fixed to the clamp body. The positioning tool can realize a deep molten salt pump test under the action of variable liquid. The positioning tool meets the precision requirement of agear at first, then improves the working efficiency and is suitable for mass production; finally, the tool is convenient to disassemble and assemble and easy to understand.

The invention discloses a vibration absorbing structure for a thin-wall support of an auxiliary plate of a shaft part and a vibration absorbing method thereof. The vibration absorbing structure comprises rubber rings which are arranged at two sides of the auxiliary plate of the part, wherein bakelite plates cover the outer sides of the rubber rings; the rubber rings and the bakelite plates are correspondingly fixed to two sides of the auxiliary plate through fasteners and can be fixed to the auxiliary plate by bolts which correspondingly pass through mounting holes in the rubber rings and the bakelite plates. The method is characterized in that the mounting holes in the manufactured bakelite plate and the rubber ring at one side of the part are aligned, then the bakelite plate and the rubber ring are positioned on the part, and the mounting holes are aligned to through holes in the auxiliary plate; the processed mounting holes in the bakelite plate and the rubber ring at the other side of the part are aligned, and then the bakelite plate and the rubber ring are positioned to the part; the bakelite plates and the rubber rings are locked through the through holes in the auxiliary plate, so as to achieve the auxiliary supporting effect. The vibration absorbing structure and the vibration absorbing method are applicable to the processing of sealing teeth and threads in thin-wall supporting parts of various shaft parts of aircraft engines, and the vibration caused by poor support stiffness in the processing process can be effectively prevented.

The invention discloses a finish machining method of a camshaft. The finish machining method sequentially comprises the following steps that first, finishing is conducted on a workpiece; second, a shaft neck and a cam are accurately ground, wherein shaft neck allowance is reserved in the shaft neck accurate grinding process; third, the shaft neck at the farthest end of the workpiece which is completed in the second step is used as a supporting point to straighten the cam; fourth, fine grinding is conducted on the shaft neck. By the adoption of the method, it is guaranteed that cam base circle run-out of the camshaft can meet requirements, and therefore the machining precision of the camshaft is high.

The invention discloses a technology for machining a bushing with a conical hole. The technology for machining the bushing with the conical hole comprises the following steps that firstly, a bar material corresponding to the material designation is received; secondly, 100% light splitting inspection is conducted as required; thirdly, end faces are planed smooth by using a turning tool, rough turning is conducted on a large-diameter outer circle, a small-diameter outer circle and an inner hole; fourthly, heat treatment is conducted as required, and the strength of heat treatment is requested to reach the formula that sigma b is equal to 1175 +/- 100 MPa; fifthly, the small-diameter outer circle end is clamped, end surfaces are planed smooth, and finish turning is conducted on the conical hole; sixthly, the turning tool is turned round, locating is conducted according to the conical hole, and finish turning is conducted on the big-diameter outer circle and the small-diameter outer circle; seventhly, heat treatment is conducted as required, and low temperature tempering is conducted; and eighthly, a bushing is delivered for inspection. According to the technology for machining the bushing with the conical hole, finish turning is conducted on the conical hole firstly, then finish turning is conducted on the outer circles, circular run-out can be effectively guaranteed, technological requirements are met, and the part quality is also guaranteed; and the technological scheme conforms to reality, the operation is convenient, the technology is popular and easy to understand, and the machining method is easy to learn and popularize.

The invention relates to a processing method for a planet carrier. The processing method comprises the following steps that (1), after the planet carrier is subjected to rough processing, a splined hole is formed in a vertical broaching machine in a broaching manner; (2), the planet carrier is inserted into a high-precision-taper spline mandrel, axially and tightly wedging is performed by means ofthe taper, a jacking tip of a numerically controlled lathe tightly jacks center holes in the two ends of the spline mandrel, and a small end face of the planet carrier is subjected to finish turning;(3), the small end face of the planet carrier is placed on a bottom plate, positioning is performed through the splined hole and the small end face, the splined hole serves as the positioning benchmark, three planetary gear mounting holes are formed in a vertical machining centre, and the relative positions of the three planetary gear mounting holes are guaranteed by equipment precision; (4), thesplined hole and the small end face serve as the positioning benchmark, and processing of three blank portions is completed. Positioning is performed through the splined hole, the positioning benchmark is consistent with the design benchmark, the position precision is effectively guaranteed, the main precision is guaranteed by a high-precision fixture and the equipment precision of the machiningcenter, less human factors exist, and quality stability is high.