44results about How to "Repeat positioning is accurate" patented technology

A railcar truck bolster side bearing mounting pad milling machine and method. A milling machine of the present invention includes a pair of milling heads and associated cutters suspended from an overhead frame member. A sliding saddle unit is provided for transporting the bolster into and out of a work envelope of the milling machine. At least one fixturing assembly is attached to the sliding saddle unit to support and fix the position of the bolster in three directions. The bolster is rigidly supported from its underside, thereby eliminating the risk that the bolster may move downward during machining. Since the vertical position of the bolster when presented to the cutters is fixed, thereby the need to raise the bolster into a working position is also eliminated.

The invention discloses a seedling box structure of a pot seedling transplanter. The seedling box structure comprises a fixed guide rail base, a box shifting guide rail support base, box shifting guide rail brackets, a seedling box bracket, a seedling feeding chain mechanism, a seedling feeding swing rod mechanism, a seedling tray return bracket, a seedling feeding positioning mechanism, a box shifting guide rail and a chain box and the like, wherein the fixed guide rail base is arranged on the chain box; the box shifting guide rail support base is arranged on the fixed guide rail base; the left and right box shifting guide rail brackets are arranged on two side surfaces of the seedling box; the seedling feeding swing rod mechanism is arranged on the box shifting guide rail brackets; the lower end of the seedling box bracket is connected with the chain box and the upper end of the seedling box bracket is connected with a bracket support plate; a connection part is arranged at the upper end of the seedling box; and the lower end of the seedling box is fixed on the box shifting guide rail. The seedling box structure has the beneficial effects that accurate step-by-step seedling feeding, accurate repeated positioning, seedling tray return and accurate box shifting are achieved through operation of the seedling feeding swing rod mechanism, the seedling feeding positioning mechanism and the seedling feeding chain mechanism and the matching of a seedling take manipulator and a seedling transplanting support arm; and the seedling box structure has the characteristics of being simple in structure and convenient to use.

The invention discloses a stroke regulation built-in precise fast press machine, and an oil cylinder and a use method thereof, belongs to the field of a hydraulic press machine, and solves the problems of low production efficiency, high cost and complicated structure of a slide block regulating mechanism of the existing hydraulic press machine. The oil cylinder provided by the invention comprises a main cylinder piston rod and a main cylinder body, wherein one end of the main cylinder piston rod extends into the main cylinder body; one end extending into the main cylinder body is provided with a cavity; a regulating screw nut is arranged at the upper part of the inner wall of the cavity; the regulating screw nut and the inner wall of the cavity are connected through screw threads; a regulating screw rod is also arranged in the cavity; the lower end of the regulating screw rod extends into the cavity; the middle end passes through the regulating screw nut; the upper end extends out of the main cylinder body; the upper end, extending out of the main cylinder body, of the regulating screw rod is fixedly provided with a worm wheel; the middle end, penetrating through the regulating screw nut, of the regulating screw rod is provided with a key slot; a guide key is arranged on the corresponding regulating screw nut. The press machine, the oil cylinder and the use method have the advantages that the cost can be reduced; the production efficiency is improved; the applicability to various processing processes can be realized.

The invention discloses a bridge crack detecting device which comprises a support frame, a walking device and an image recording device, wherein the support frame can be detachably mounted on the bottom surface of a bridge; the image recording device is movably disposed on the support frame through the walking device; and the image recording device driven by the walking device is movable in at least one direction on the support frame. The image recording device performs image recording on the bottom surface of the bridge during the movement, and an inspector checks cracks at the bottom of thebridge according to the image recording. The device has the advantages of simple structure, convenient disassembly, high stability, accurate positioning and the like, and is capable of quickly and accurately detecting the cracks at the bottom of the bridge.

The invention discloses a positioning and clamping mechanism. The positioning and clamping mechanism comprises an annular main body of which the interior is provided with a containing space, profiling faces fixed on the inner ring of the main body, a buckle switch assembly which is located in the containing space and partially stretches out of the main body and buckle parts; each buckle part comprises a buckle part main body, buckle claws extending out of the main body from the buckle part main body to the positions above the profiling faces and a buckle resetting part which is located between the main body and the buckle part main body and makes contact with the main body and the buckle part main body, and an oblique face upwards transiting from outside to inside is adopted as the lower surface of each buckle claw; the buckle switch assembly can drive the buckle part main bodies to compress the buckle resetting parts to enable the buckle claws to be far away from the profiling faces; the buckle resetting parts can push the buckle part main bodies to be close to the profiling faces. The positioning and clamping mechanism is applied to an automatic production line of thin products and can accurately position and fix workpieces to be machined and prevent damage to the workpieces due to clamping.

The invention discloses a motor shaft conveying line. The motor shaft conveying line comprises a shaft grabbing robot, wherein a grabbing tool is arranged on the shaft grabbing robot, a conveying frame is arranged at the left side of the shaft grabbing robot, a conveying guide rail and a centering device are arranged on the conveying frame, and the centering device comprises a location cone and apush cone; and grabbing jaws are arranged on the grabbing tool, a walking device is arranged on the conveying guide rail, a transport lifting plate is arranged on the walking device, radial clamping devices are arranged on the transport lifting plate, double-station numerically-controlled machining equipment is arranged at the front side of the conveying guide rail, a transposing device is arranged at the rear side of the conveying guide rail, and the transposing device comprises two transposing clamps. The two plate transposing clamps form one-to-one correspondence with the two radial clamping devices separately, and the left-right positions of the two plate transposing clamps are not changed in the case that motor shafts are inserted into the radial clamping devices by the plate transposing clamps and in the case that the motor shafts are taken out from the radial clamping devices by the plate transposing clamps; and in this way, accurate repeated location for the plate transposing clamps can be conveniently realized by a simple mechanical structure. The motor shaft conveying line is used for machining for the motor shafts.

The invention discloses a numerical control double-sided grinding structure, and relates to the technical field of hardware cutter and shear machining equipment. The numerical control double-sided grinding structure comprises a lathe bed, an X-axis feeding assembly, a Y-axis feeding assembly, a clamp, a first cutter feeding assembly, a second cutter feeding assembly, a left axle box assembly, a right axle box assembly, an electric box, a numerical control operation panel and a water tank, wherein the X-axis feeding assembly is fixedly installed at the front end of the lathe bed, and the Y-axis feeding assembly is fixedly installed on a sliding table of the X-axis feeding assembly. According to the numerical control double-sided grinding structure, the X-axis feeding assembly and the Y-axis feeding assembly are controlled by a system to operate in a matched linkage mode, double-sided cutting edge track machining of a workpiece is completed under the synchronous feeding of the left axle box assembly and the right axle box assembly, an exquisite arc-shaped curved surface can be machined, the machining track of the workpiece can be conveniently completed, the defects of a traditional machine for manually manufacturing a mold are overcome, two spindle box assemblies are driven by a servo motor, repeated positioning is accurate and stable, action is flexible, the operation is convenient, the application range is wide, and efficiency is high.

The invention belongs to general electronic blood pressure measuring apparatuses, aiming at providing a wristlet typed human body blood pressure trauma-free continuous checkout gear for realizing theconvenient and comfortable continuous blood pressure measurement. The technical scheme adopted by the invention is that the wristlet typed human body blood pressure trauma-free continuous checkout gear consists of two parts of a wristwatch and a human body pulse wave checkup gear, and the two parts are connected by a wristlet and an electric signal wire; the human body pulse wave checkup gear consists of a piezoresistive pulse wave sensor and a base of the pulse wave sensor; a pulse wave signal processor unit is attached to the inside of the wristwatch of the wristlet typed human body blood pressure continuous checkout gear; the wristlet consists of a pressing belt of the pulse wave sensor, a sensor location adjustment strip, a length size regulating mass used for regulating the length ofthe wristlet, a camber regulating mass used for regulating the measuring point locating relation between the wristlet and the pulse and a fastening belt. The checkout gear is mainly used for manufacturing blood pressure continuous monitoring and measuring apparatuses.

The invention discloses a bottle body automatic screen printing machine. The machine comprises a conveying and loading device, a circular conveying working line and an unloading device; a bottle bodycircular conveying working line comprises the circular conveying working line arranged on a stand; the circular conveying working line comprises an annular guide rail set, a linear motor magnetic suspension motion mechanism and a servo control system; the linear motor magnetic suspension motion mechanism is provided with a mover for circularly moving along annular guide rails; the mover is provided with a bottle body fixture; a screen plate and an ink curing device are arranged beside the linear motor magnetic suspension motion mechanism; a scraper is arranged on the screen plate; the screen plate and the ink curing device are both positioned above a motion trajectory of the bottle body fixture; and the ink curing device is positioned between an ink plate and the unloading device. The machine is precise in repeated positioning, safe, reliable and high in speed, improves the chromatography precision and the printing quality, adopts ultraviolet rays or electronic beams to cur ink on bottle bodies, and is suitable for printing of some glass bottles and cosmetic bottles with complicated shapes.

The invention discloses a gear-driven automatic precision focusing mechanism of a beam expander. The gear-driven automatic precision focusing mechanism comprises a beam expander main body part and a beam expander seat, wherein a beam expander external fastening part is arranged on the beam expander seat. The gear-driven automatic precision focusing mechanism is characterized in that: a beam expander pressing plate is fastened at the upper end of the beam expander main body part; the beam expander pressing plate is pressed against the beam expander external fastening part from the side upper part; an outer ring of a beam expander rotary fastening sleeve fastens a bull gear; the interior of the beam expander rotary fastening sleeve is in coaxial fastening connection with a beam expander focusing part regulating sleeve; a stepping motor seat is fixed on the beam expander seat; a stepping motor is fixed on the stepping motor seat; a pinion is fixed on a stepping motor shaft; a triggering sheet is fixed on a sleeve fastening pressing ring; the triggering sheet is connected with the beam expander focusing part regulating sleeve; a photoelectric interrupter is fastened on a sensor seat; and the sensor seat is fastened on the beam expander seat. The gear-driven automatic precision focusing mechanism of the beam expander is simple and compact in structure, small in occupation space, accurate in repeated positioning and easy in adjustment and maintenance; and the operating safety environment of a laser operator is greatly improved.

The invention discloses a friction induction-based single crystal quartz surface selective etching method. The method comprises the following steps of: arranging a probe with ball coronary tip on an atomic force microscope, fixing single crystal quartz on a sample platform, starting the atomic force microscope, and applying constant load F or variable load F' to the probe, wherein the value of the F or the variable range of the F' is 0.03 to 0.14 times critical load Fy of yield on the quartz surface; performing scanning on the surface of the single crystal quartz along the set track and cycletimes by the probe; and after scanning, corroding the single crystal quartz for over 2.5 hours by using 15 to 25 percent KOH solution. The method can effectively perform nano processing by combining scanning under extremely low load and subsequent corrosion, does not need a mask or repeated corrosion, and can process a multistage nano structure. The method does not damage or pollute the structureand the surface outside the processed area, and is a simple, accurate and clean nano quartz processing method.

The invention discloses a continuous forging and pressing die for a safety belt guide ring. The continuous forging and pressing die comprises an upper die and a lower die, wherein the upper die is provided with punches, a die cavity corresponding to the punch is formed in the lower die, the punches comprise a first trimming punch, a second trimming punch, an outer groove forging and pressing punch, an intermediate groove forging and pressing punch, a first outer ring forging and pressing punch, a second outer ring forging and pressing punch, a third trimming punch, a fourth trimming punch, a bending punch, a first forming punch, a second forming punch, a shaping punch and a cutting punch which are sequentially arranged. According to the continuous forging and pressing die, two processes of forging and stamping are combined to be completed in one set of die, the manufacturing efficiency can be obviously improved, repeated positioning is accurate, friction and abrasion are reduced, and the part yield is improved.

The invention discloses a positioning and clamping mechanism. The positioning and clamping mechanism comprises an annular main body of which the interior is provided with a containing space, profiling faces fixed on the inner ring of the main body, a buckle switch assembly which is located in the containing space and partially stretches out of the main body and buckle parts; each buckle part comprises a buckle part main body, buckle claws extending out of the main body from the buckle part main body to the positions above the profiling faces and a buckle resetting part which is located between the main body and the buckle part main body and makes contact with the main body and the buckle part main body, and an oblique face upwards transiting from outside to inside is adopted as the lower surface of each buckle claw; the buckle switch assembly can drive the buckle part main bodies to compress the buckle resetting parts to enable the buckle claws to be far away from the profiling faces; the buckle resetting parts can push the buckle part main bodies to be close to the profiling faces. The positioning and clamping mechanism is applied to an automatic production line of thin products and can accurately position and fix workpieces to be machined and prevent damage to the workpieces due to clamping.

The invention discloses an automatic detection and automatic unloading and sorting wire mesh machine, which includes a frame, which is equipped with a man-machine interface control system, an image detection system, a lifting column assembly, a CCD lens assembly, a turntable workbench, and a blanking machine. The manipulator and foot switch, the lifting column assembly is provided with a beam that can move up and down along the lifting column assembly, the lifting column assembly is equipped with a lifting towline, the beam is equipped with a lifting towline buckle, and the lifting towline is connected to the lifting towline buckle , There are adjustable and fixed left net arm and right net arm on the crossbeam, there is a printing seat that can slide left and right along the crossbeam between the left net arm and the right net arm, there is a printing seat drag chain on the crossbeam, and a printing seat is set on the printing seat. There is a drag chain buckle of the printing seat, the drag chain of the printing seat is connected with the drag chain buckle of the printing seat, the image detection system is electrically connected with the CCD lens assembly, the turntable table is set on the CCD lens assembly, the unloading manipulator, the left mesh arm and the right mesh arm below.

The invention discloses a multi-station tyre gripper rotating device of a tyre spraying coater and a rotating manner thereof. The device comprises a multi-station tyre gripper component, a vertical center rotating shaft component, a rotating drive component and a dual-node metal diaphragm coupler. The multi-station tyre gripper component forms a rib-shaped structure by no less than three groups of tyre grippers and corresponding connecting cross arms and connecting arm supports. The rib-shaped structure is fixedly connected to the upper part of the vertical center rotating shaft. The lower end of the vertical center rotating shaft is connected to the rotating drive component including a cam divider through the dual-node metal diaphragm coupler. When the device rotates, a vertical output end of the cam divider drives a vertical shaft connected to the vertical output end, and the multi-station tyre gripper component to rotate by driving a horizontal input end of the cam divider through a gear motor, so as to achieve actions of simultaneously rotating of the multi-station tyre grippers. The multi-station tyre gripper rotating device is simple in structure, high in rotating efficiency, and accurate to position; and the grippers and the connecting cross arms are simply installed and conveniently adjusted.