211results about How to "Realize automatic centering" patented technology

The invention relates to a novel numerical control bamboo splitting machine, which includes a lathe bed guide rail, a rotation mechanism, a driving chain, a bamboo tube loading mechanism, a bamboo tube diameter measurement device, a stepping motor, a cutter combination assembly, a bamboo centring combination assembly, a transmission system, a swinging mechanism, a push plate combination assembly, and a sash weight, and is characterized in that a push plate combination component is arranged on tool body guide rails; a driving chain for driving the push plate combination component to move back and forth is arranged between the two guide rails; a rotational cutter disc combination component is arranged at the front ends of the tool body guide rails; a bamboo tube loading mechanism is arranged on right sides of the tool body guide rails; two movable bamboo tube centering combination components are arranged on the upper left sides of the tool body guide rails; and when the push plate combination component does backlash motion, the bamboo tube loading mechanism conveys a bamboo tube into a measuring device to measure the diameter of a small head of the bamboo tube, the bamboo tube enters two V-shaped bearings, and combination cutters which are matched are rotated to the center of the bamboo tube and aligned; and a transmission system is reversed, and the push plate combination component pushes the bamboo tube to the combination cutters, so that the bamboo tube is split into bamboo chips. Compared with the conventional bamboo splitting machine, the numerical control bamboo splitting machine has the advantages that automatic loading, automatic tool changing and automatic centering of the bamboo tube are realized, one operator is reduced, the labor strength is lowered, the width error of the split bamboo clips is reduced, and the utilization rate of bamboo woods is improved.

The invention relates to material mechanical performance testing equipment, and aims to provide a tensile test clamp for a high-pressure hydrogen environment material testing machine. The clamp comprises an upper load transfer frame, a lower load transfer frame, an upper clamp arranged in the upper load transfer frame and a lower clamp arranged in the lower load transfer frame, wherein the upper clamp and the lower clamp respectively comprise a spherical cavity seat and a spherical hinge support seat; each spherical cavity seat is a cylinder with an opening formed in the center; a spherical mold cavity body is inward formed in one end of each cylinder; each spherical hinge support seat comprises a cylinder, a spherical coronal body and a convex part in sequence; the spherical cavity seats and the spherical hinge support seats are positioned in the corresponding load transfer frames; the cylinder of each spherical hinge support seat penetrates through an opening in the center of the spherical cavity seat and a central through hole in the corresponding load transfer frame in sequence and can move freely; the upper clamp and the lower clamp are symmetrical vertically. By utilizing the clamp disclosed by the invention, a sample installation process is rapid, simple and convenient; a sample can be automatically centered in the situations of parallel misalignment, deflection misalignment or mixed misalignment, and the test data accuracy is improved.

The invention relates to high-torque hydraulic wrenching and disassembling equipment suitable for an outer-flat drilling rod, belonging to the field of drilling and exploring machineries. The high-torque hydraulic pipe-wrenching machine for wrenching and disassembling the outer-flat drilling rod is characterized by comprising lower clamping tongs, a floating device, clasp punching tongs, an orifice leaving oil cylinder, a sliding block at the lower end part of a left floating post and a sliding block at the lower end part of the right floating post of the floating device respectively correspond to the insides of a left chute and a right chute of a lower clamping tongs support of the lower clamping tongs, the body of the orifice leaving oil cylinder is fixed at the rear end part of the lower clamping tongs support, and a piston rod of the orifice leaving oil cylinder is articulated with a floating frame; and the clasp punching tongs are arranged on a floating plate of the floating device, and clasp turning tongs are arranged on a bottom plate of the clasp punching tongs. The invention adopts an integral structure of clamping, clasp turning, clasp punching/pre-tightening and is suitable for the wrenching and the disassembling of the outer-flat drilling rod.

The invention belongs to the technical field of steering control of vehicles, and relates to a hydraulic steering system. A front left steering oil cylinder and a front right steering oil cylinder are connected with a front steering knuckle arm; a rear left steering oil cylinder and a rear right steering oil cylinder are connected with a rear steering knuckle arm; a port P, a port T, a port Ls, a port R and a port L of a flow amplifier are connected with a port P, a port T, a port Ls, a port R and a port L of a hydraulic steering device respectively; a port PP and the port P of the flow amplifier are connected with each other; a port CR of the flow amplifier is connected to a port T of an electro-hydraulic steering valve; a port CL of the flow amplifier is connected with a large cavity of the front left steering oil cylinder and a small cavity of the front right steering oil cylinder; a port P of the electro-hydraulic steering valve is connected with a small cavity of the front left steering oil cylinder and a large cavity of the front right steering oil cylinder; a port A of the electro-hydraulic steering valve is connected with a large cavity of the rear left steering oil cylinder and a small cavity of the rear right steering oil cylinder; and a port B of the electro-hydraulic steering valve is connected with a small cavity of the rear left steering oil cylinder and a large cavity of the rear right steering oil cylinder. The hydraulic steering system has the advantages that the system has two interchangeable steering modes and is easy to operate.

The invention discloses an automatic centering and clamping device, which comprises a cylindrical mandrel and a cylindrical expansion mould. One end of the mandrel is fixed onto a chuck, the expansion mould is sleeved on the mandrel, a cavity with an annular section is arranged inside the expansion mould, an air inlet hole is arranged on one side of the expansion mould positioned on the chuck and is communicated with the air inlet hole, an air inlet pipe is connected outside the air inlet hole, and a valve is arranged on an air inlet pipe. The automatic centering and clamping device is used for clamping and fixedly machining a workpiece, the operation is extremely convenient, the labor intensity of operators is reduced, and workpiece clamping efficiency and workpiece machining precision are improved.

The invention discloses an automatic centering and damping brush component for a collector ring. The automatic centering and damping brush component for the collector ring comprises a brush and an automatic damping mechanism, wherein the automatic damping mechanism is used for mounting the brush and comprises a connector and two brush connecting plates; the two brush connecting plates are arranged at two sides of the connector respectively; one end of each brush connecting plate is hinged with the connector body and the other end is hinged with a fixed block connected with the brush; the brush connecting plates are in an elongated plate-like structure; the two brush connecting plates are connected with each other through an elastic element, so that the distance between the two brush connecting plates can change along with expansion and contraction of the elastic element; the middle part of the elastic element is supported on an extension plate of the connector; and the brush is hinged with the fixed block. The invention aims at providing the brush component which can still reliably contact a conductive ring in the radar collector ring under the conditions of strong impact and strong vibration.

The invention discloses a self-centering clamp used for a taper hole product. The self-centering clamp comprises a base. A mandrel is fixedly connected to the base. A taper sleeve is slidably arranged on the mandrel in a sleeving mode, and the taper sleeve is used for being inserted into a taper hole of the product to be machined so as to achieve radial positioning. The base is provided with an axial positioning face used for being in contact with the product to be machined. The self-centering clamp further comprises a detachable locking assembly, and the detachable locking assembly is used for pressing and fixing the product to be machined onto the axial positioning face so that the product to be machine can be prevented from moving in the axial direction of the mandrel. An elastic ejecting assembly is arranged between the base and the taper sleeve and used for making the taper sleeve and the taper hole be in contact fit tightly. The self-centering clamp has the advantages that the positioning accuracy is high, the stability and reliability are good, detachment is convenient, the product is not prone to being damaged, and the clamping efficiency is high. The self-centering clamp can adapt to products to be machined with different taper holes and clamping of different kinds of machining equipment (including lathing equipment, milling equipment, boring equipment, drilling equipment, rolling equipment, inserting equipment, grinding equipment and the like) by manufacturing multiple sets of bases and taper sleeves of different specifications.

The invention relates to the technical field of agitating lorries, and discloses a support device, which is used for supporting an agitator drum of an agitating lorry. The support device comprises a riding wheel assembly, wherein the bottom end of the riding wheel assembly is fixed to a lorry body of the agitating lorry through an elastic device. The bottom end of the riding wheel assembly of the support device is fixed to the lorry body of the agitating lorry through the elastic device; and when the agitating lorry runs on bumpy and uneven roads quickly, the impact generated by the upward jumping of the agitator drum can be absorbed by the elastic device, so that the impact generated by the upward jumping of the agitator drum can be reduced, and the agitator drum and the riding wheel assembly are protected effectively. The invention also discloses the agitating lorry.

The invention discloses an inspection device for the coaxiality of a cylinder cover valve base hole and a guide pipe bottom hole, which comprises a dial indicator, and is characterized by further comprising a core shaft which is of a hollow structure is can be inserted in the guide pipe bottom hole, a core rod inserted at one end of the core shaft and a rotatable inspection device base arranged atone end of the core rod in a sleeved manner, wherein one side of the inspection device base is provided with a measuring lever which can be inserted into the valve base hole can be connected with theside wall of the valve base hole in a contacted manner, the lower part of the measuring lever and the inspection device base are provided with a first spring therebetween, and a measuring head of thedial indicator penetrates through the inspection device base and is connected with the upper part of the measuring lever in a contact manner; and the core shaft is internally provided with a positioning mechanical capable of automatically positioning the axis of the guide pipe bottom hole below the core rod. The inspection device is simple in structure and convenient to operate, can measure the coaxiality of the cylinder cover valve base hole and the guide pipe bottom hole quickly and accurately, greatly improves the measurement efficiency and accuracy and reduces the labor intensity and theproduction cost.

The invention provides an inner hole clamping device, which can solve the problem that the traditional spring sleeve cannot reliably clamp and pick up workpieces with small inner holes, large self-weight, and long inner holes, so as to meet the requirements of automatic production of industrial machinery . It includes a mandrel and a driving mechanism. The mandrel is provided with an axial center through hole, and an axially movable pull rod is installed through the axial center through hole. The outer peripheral surface of the front end is evenly distributed along the circumferential direction with three slide grooves that extend horizontally in the axial direction and are parallel to each other. The sliding claw and the sliding claw are provided with a wedge-shaped inclined surface cooperating with the wedge-shaped groove to slide, and the front end of the sliding claw is fixedly connected with the pulling block.

A detaching-installing machine with locating and supporting roller driving units and following cover plate for the bearing holder of supporting roller is composed of big carrier, anti-tilting unit of said big carrier, fixed cover plate, detaching-installing frame, chain-type driver unit, and such units on said big carrier as the transversely movable left and right supporting plates, centering unit, the front and back following cover plates, electric oil coater, lift table, horizontal hydraulic cylinder for driving big carrier, transverse hydraulic cylinder for driving said supporting plates, lifting hydraulic cylinder, electric controller consisting of electric control cabinet and control panel, and hydraulic controller.

The invention relates to an expansion drum device for tyre retreading and a tyre retreading method. The expansion drum device for tyre retreading comprises a first moving mechanism, a second moving mechanism and a supporting part at the tail end of the second moving mechanism, wherein the radial motion of the second moving mechanism is driven by virtue of the axial motion of the first moving mechanism; the first moving mechanism comprises a main shaft, a tapered shaft sleeved at the main shaft, and a driving mechanism used for driving the axial motion of the tapered shaft; the second moving mechanism comprises a radial shaft matched with the inclined surface of the tapered shaft; the radial shaft is clamped between a left tray and a right flange plate. The driving mechanism is used for driving the tapered shaft to move forward and backward in the axial direction, so that the radial shaft with the inclined surface at the lower end is driven to extend out at the same time, and therefore, self centering of a tyre is realized; the expansion drum device is simple in structure; a gas passage structure adopted by the expansion drum device is relatively simple, so that winding of a gas pipe caused by the rotation of an expansion drum is avoided, and the expansion drum device is safe and reliable and is convenient to use.

The invention provides an automatic multi-stage sleeve hydraulic cylinder mounting device comprising a main case body. A control device is arranged at one side of the main case body, a central clamping device is arranged on the main case body, a central limiting device is arranged at the tail end of the main case body, an abutting device is arranged at the head end of the main case body, and the central clamping device, the central limiting device and the abutting device are connected with the control device. The multi-stage hydraulic cylinder with the central clamping device, the central limiting device and the abutting device can be easily operated, automatic centering and assembling can be realized, quality reliability is guaranteed, and efficiency is increased; the workpieces are not lifted manually but pushed to convey, and working intensity is greatly reduced; the device is simple to operate and high in applicability, precise degree of assembling work is increased, assembling damage rate in an assembling process is reduced; and automatic control and special auxiliary devices are adopted, so that working intensity of workers is reduced and assembling efficiency is greatly increased.

An annular part grinding fixture comprises a taper handle shaft of hollow structure, an outer taper shaft, an inner taper shaft and a pushing disc. An outer taper face is arranged at one end of the outer taper sleeve, and an inner taper face is arranged at one end of the inner taper sleeve; the outer surface of the outer taper sleeve is sleeved with the inner taper sleeve, and the outer taper face of the outer taper sleeve is matched with the inner taper face of the inner taper sleeve; the outer taper sleeve is fixedly connected with the taper handle shaft, and the inner taper sleeve is fixedly connected with the pushing disc; and the pushing disc is arranged in the outer taper sleeve, and a plurality of axial opening gaps are formed in the outer taper sleeve in the circumferential direction. The annular part grinding fixture is simple in structure, convenient to use, capable of achieving automatic centering, and high in centering precision; and clamping force is controlled, so that clamping deformation can be reduced, and the machining precision is ensured.

The invention relates to the field of motor rotors, in particular to a center-adjusting device for pressing and assembling a bearing. The center-adjusting device for pressing and assembling the bearing comprises a supporting frame and a support which is used for accommodating the bearing to be assembled. A hole through which a rotating shaft to be assembled can pass is formed in the support, and a center-adjusting bearing assembly is arranged between the support and the supporting frame. An inner ring and an outer ring of the center-adjusting bearing assembly are connected with the support and the supporting frame respectively, the inner ring and the outer ring of the center-adjusting bearing assembly can mutually float, the axis of the inner ring and the axis of the outer ring can not be overlapped, and therefore the support connected with the outer ring can float relative to the supporting frame. When the bearing is pressed and assembled, the rotating shaft of a rotor penetrates through an inner hole of the bearing and then extends into the hole in the support in a hanging mode. When the axis of the bearing and the axis of the rotating shaft are not located in the same straight line, the support can swing in a deviation mode along with the extending of the rotating shaft until the axis of the bearing and the axis of the rotating shaft are overlapped. Therefore, the center can be automatically adjusted when the bearing is pressed and assembled, the concentricity of the bearing and the rotating shaft is guaranteed, and the quality of the rotator is improved.

The invention discloses a hydraulic rapid automatic centering chuck which is suitable for processing machines such as machine tools and the like. The chuck comprises a clamping jaw assembly, a chuck body, a connector and a ball-screw hydraulic drive mechanism, wherein the clamping jaw assembly is provided with three or four jaws, the connector and the ball-screw hydraulic drive mechanism are arranged in the chuck body, the ball-screw hydraulic drive mechanism comprises a multi-head ball-screw assembly, a hydraulic oil cylinder and a hydraulic converter, the multi-head ball-screw assembly is composed of a multi-head lead screw and a ball nut, the hydraulic converter is connected with a hydraulic system, the multi-head all-screw assembly and the hydraulic oil cylinder are arranged in a spindle hole of a machine tool, and the hydraulic converter is communicated with the hydraulic oil cylinder. Hydraulic oil flows into the hydraulic oil cylinder through the hydraulic converter, so that a cylinder body of the hydraulic oil cylinder makes a forward-and-backward motion, and then pushes the ball nut to make a forward-and-backward motion and drives the multi-head lead screw to make a forward or backward rotating motion, the multi-head lead screw after extending to the inside of the chuck body is connected with the connector so as to drive the connector to operate, and the connector drives the clamping jaws to move radially to and fro through an Archimedes planar spiral disc.

The invention relates to a pneumatic abrasion-resisting angle stop valve which is small in size, light in weight, flexible to open, good in seal performance, resistant to abrasion and impact, easy to install, low in production cost and suitable for cutting off dust and ash dregs. The pneumatic abrasion-resisting angle stop valve comprises a valve body, a valve body sleeve, a valve base, a valve cover and a valve body neck bush, a valve rod, a valve clack sleeve and a valve clack are installed in the valve body, and a packing pad and a packing ring are arranged between the upper portion of the valve cover and the valve rod from bottom to top. The pneumatic abrasion-resisting angle stop valve is characterized in that a screw hole is formed in the valve cover, a round nut used for clamping a pneumatic device is installed at the upper end of the valve rod, the valve clack and the valve base are made of tungsten and cobalt hard alloy, the sealing face of the valve base and the valve clack is a conical face, the valve clack sleeve and the valve clack are connected through a spherical surface antifriction bearing, the lower end of the valve rod and the valve clack sleeve are connected in a conical face mode to achieve automatic centering, the lower end face of the valve rod is a spherical surface and makes contact with the upper end face of the valve clack for automatic center adjustment, and a lower end opening of a center through hole of the valve cover is a conical face to form an upper sealing point.

The invention provides a machine tool spindle trial run platform capable of simulating working conditions. A front spindle fixing support and a rear spindle fixing support are arranged on a working table and used for supporting the front portion and the rear portion of a spindle to be tested correspondingly. A displacement information acquisition mechanism used for acquiring displacement information of a check rod and an angle/speed measurement information acquisition mechanism used for acquiring rotation information of a spindle holder are arranged on the working table and correspond to the check rod at the front end of the spindle to be tested and the spindle holder. The front end and the rear end of the spindle to be tested are both provided with acceleration sensors and temperature sensors, and the acceleration sensors and the temperature sensors are used for acquiring vibration information and temperature information of the spindle to be tested in the running process. A driving motor used for driving the spindle to be tested to rotate, a motor position adjustment mechanism used for adjusting the horizontal position of the driving motor and a force sensor module used for acquiring the magnitude of tensile force of the driving motor during movement are arranged below the working table. A motor sheave of the driving motor is connected with a spindle sheave at the rear end ofthe spindle to be tested through a transmission belt. The machine tool spindle trial run platform capable of simulating the working conditions is a machine tool spindle dynamic performance test platform capable of realizing omni-directional system integration.

The invention provides an engagement fixture for square steel blade milling, and can solve the problems of long blade manufacturing period and high machining difficulty easily caused by positioning and clamping blades by a traditional engagement fixture. The engagement fixture for square steel blade milling comprises a turntable, and is characterized by further comprising an engagement clamping mechanism and a floating tip mechanism; the engagement clamping mechanism includes two engagement blocks and a lead screw translation structure; the lead screw translation mechanism is mounted on the turntable; the floating tip mechanism is arranged in the center position of the lead screw translation mechanism; and the two engagement blocks are respectively mounted on the lead screw translation mechanism, are positioned on two sides of the floating tip mechanism, and can oppositely or reversely move along the lead screw translation mechanism.