53results about How to "Smooth linear motion" patented technology

The invention discloses a gear-rack transmission type horizontal three-cylinder plunger reciprocating pump. The gear-rack reciprocating pump comprises a transmission end and a hydraulic end; at the transmission end, mainly, three pairs of non-full gears with the phase difference and three pairs of racks with the phase difference are matched, and plungers and the racks are connected; at the hydraulic end, the plungers are matched with plunger cylinders, valve bodies are matched with check valves, the plunger cylinders are connected with the valve bodies, and the plunger cylinders are connected with transmission cases; and according to the connection between each plunger cylinder and the corresponding transmission case, a newly-designed gland plate component is utilized, one end of the gland plate component is used for being connected with the corresponding plunger cylinder and pressing a seal in the plunger cylinder, and the other end of the gland plate component is used for assembling a linear bearing and being connected with the corresponding transmission case. According to the gear-rack transmission type novel horizontal three-cylinder plunger reciprocating pump, the output flow and the pressure impulsiveness of the reciprocating pump are basically eliminated in theory, the interior structure of the reciprocating pump is simplified, and the mechanism failure rate is decreased; and operation is stable, reversing is quick, a precise electric control system does not need to be configured, and the development investment is greatly reduced.

The invention discloses a control method of an intelligent low-pressure drawer unit system. The control method is characterized in that a servo motor is controlled by an infrared manner to rotate clockwise and anticlockwise according to the single-chip microcomputer principle, so as to keep a drawer unit in the existing and exiting state, and the drawer running position is accurately positioned and monitored; in case of power failure or electrical accident, a backup power supply is put into use, a single-chip microcomputer controls the servo motor to rotate anticlockwise and a drawer is automatically ejected out to reach the original position, so as to realize full-automatic intelligent control; the drawer working information can also be fed back to a remote control terminal, thus the failure information can be timely found out, and the drawer can be controlled to exist and exit through a background remote terminal. With the adoption of the control method of the intelligent low-pressure drawer unit system, the drawer unit can freely exist and exit; the motor-based control mode is carried out, the motor lead-screw driving is selected as the main process, the linear motion is performed, thus the fit clearance is small, and little shaking is caused; the automatic driving avoids forced operation, and therefore, the service life of the drawer unit is also prolonged; the remote control function is realized through background remote terminal control software.

The invention provides a traverse feeding device of an external groove plungecut grinder. The traverse feeding device comprises a roller cross guide rail pair, a traverse feed table and a drive unit, wherein the roller cross guide rail pair comprises guide rails, a roller retainer and a cylindrical roller, and the cylindrical roller is arranged on the guide rails through the roller retainer; the drive unit comprises a stepping motor, a harmonic speed reducer and a ballscrew, wherein the stepping motor drives the harmonic speed reducer to connect the ballscrew, an output shaft of the harmonic speed reducer is fixedly connected with a shaft end of a screw of the ballscrew, a nut of the ballscrew is connected with the transverse feed table, and the nut of the ballscrew can move forth and back on the screw of the ballscrew. By means of the transverse feeding device, the deceleration with large rotation ratio can be carried out through the harmonic speed reducer so that the transverse feeding is more stable, and the transverse feeding precision is improved by controlling the stepping motor through electric programs, thus accurate feeding and reversing are realized, and the machining precision of a bearing ring is accurate; and simultaneously, the stroke of the transverse feeding is also enlarged, the purchase cost of new equipment is reduced, and the purpose of a machine tool is widened.

The present invention relates to a linear motion rolling guide device which enables a movable element to linearly move through rolling elements, and to a lens device including the linear motion rolling guide device.

A linear motion rolling guide device according to the present invention includes: a guide element 2 including a first guide groove 7 extending linearly and fitting holes 11; a movable element 3 including a second guide groove 8 extending linearly and facing said first guide groove 7 with a predetermined interval; a fixed element 4 for retaining the guide element 2; a roller unit 5 including a plurality of cylindrical rollers 14, which rolls freely and is placed between the first guide groove 7 and the second guide groove 8; and a pair of spring plates 6A, 6B for giving preload to the roller unit 5 through the guide element 2 and the movable element 3. Fitting pins 22 capable of fitting into the fitting holes 11 of the guide element 2 are provided to the fixed element 4 and the fitting holes 11 are long holes extended in a direction perpendicular to a direction in which the first guide groove 7 extends.

According to the present invention, a suitable preload can be given to the roller unit and a lens barrel can be moved linearly smoothly stably.

The invention discloses a weft selecting mechanism for big tows. The mechanism includes a rapier clamping head and a multi-selection turntable; the multi-selection turntable is provided with multipleyarn guiding channels which can run through big tow fibers; by rotating the multi-selection turntable, the yarn discharging end of each yarn guiding channel can correspond to a clamping part of the rapier clamping head in sequence; a motor is adopted for locating, and conversion of the tows is fast and accurate.

The invention relates to a prosthetic foot with a base spring (23) with a forefoot area (231) and a heel area (232), a connecting means (9, 10) arranged above the base spring (23) and used to fasten the prosthetic foot to a prosthesis, and a frontal support (25, 26, 27), at the upper end (140) of which the connecting means (9, 10) is arranged and which, at its lower end (250), is secured on a torsion element (28) that can twist about the longitudinal axis (230) of the prosthetic foot, wherein the torsion element (28) is designed as a leaf spring arrangement secured to the base spring (23) at one end in the heel area (232) or in the forefoot area (231).

The invention discloses oil cylinder part machining equipment and belongs to the oil cylinder part machining technology. The equipment comprises a base and a PLC, wherein the PLC is fixed at an upperend of the base, a moving mechanism, a fixing mechanism and a driving mechanism are arranged at an upper end of the base, the driving mechanism is connected with the moving mechanism to drive the moving mechanism to slide left and right, the fixing mechanism is located on the right of the moving mechanism, the fixing mechanism is used for fixing a to-be-machined oil cylinder part, a drilling mechanism is arranged on the right side of the moving mechanism, the drilling mechanism comprises common motors and drill bits, the number of the common motors is two, the two common motors are installed on the right side of the moving mechanism, the number of the drill bits is two, the two drill bits are fixed to output ends of the two common motors respectively, the moving mechanism pushes the drilling mechanism to achieve drilling, and the driving mechanism and the drilling mechanism are both electrically connected with the PLC. The equipment is advantaged in that the equipment is high in punching efficiency, low in manual labor intensity, free of manual punching and high in automation degree.

The invention discloses a nanoscale precision piezoelectric driving linear displacement table which comprises a matrix, a sliding rail, a driving base, a flexible mass block, a piezoelectric driving unit, a position sensor unit and a stick-slip friction assembly. The flexible mass block and the piezoelectric driving unit are matched through a spherical contact and a spherical concave surface, a self-positioning function is realized, it can be effectively guaranteed that a stress point does not deviate, and the requirements for machining precision and assembling precision are lowered. Comparedwith a traditional point contact or plane contact mode, the contact area is increased, and the service life is prolonged. A flat bridge part on the flexible mass block has an elastic function and canaccept certain deformation, so that the influence of installation errors on plane contact is effectively eliminated. In addition, the whole structure of the nanoscale precision piezoelectric driving linear displacement table is simple and compact, the size is small, the sliding rail is driven in a stick-slip mode without up-down friction, and only single friction in the stick-slip motion exists, so that the power loss and the requirements for other parts are effectively reduced, the working stability is good, and the application range is wide.

The invention discloses an electromagnetic transplanting mechanism, an electromagnetic transplanting cover closing device and an electromagnetic transplanting cover closing method. The electromagnetictransplanting mechanism comprises a machine table, sliding assemblies, lifting assemblies and sucking assemblies, and the machine table comprises two transverse frames arranged in parallel and longitudinal frames connected with the transverse frames and perpendicular to the transverse frames; the sliding assemblies are arranged on the transverse frames and can slide along the axes of the transverse frames; the lifting assemblies are fixedly arranged on the sliding assemblies and slide synchronously with the sliding assemblies; and the sucking assemblies are arranged on the lifting assemblies,can be driven by the lifting assemblies to relatively move up and down, and are used for accurately sucking an upper cover plate. The electromagnetic transplanting mechanism, electromagnetic transplanting cover closing device and electromagnetic transplanting cover closing method have the beneficial effects that full-automatic equipment is adopted, and the phenomenon that a dielectric film is wrinkled and deformed possibly in the manual transplanting process is avoided; and meanwhile, accurate positioning of the upper cover plate and a lower cover plate can be achieved, and the yield is greatly increased.

The invention discloses a method for setting a manipulator rotating mechanism of a hydraulic system. The method comprises the following steps that firstly, a section of valve control circuit is additionally arranged between a variable pump and a hydraulic cylinder, a hydraulic control reversing valve is arranged in the valve control circuit, and a swinging motor is arranged in a manipulator rotating hydraulic system; then, a one-way valve and an overflow valve are additionally arranged in a hydraulic circuit connected with the periphery of the motor, and when an electromagnetic valve returns to the middle position, because the pressures at both ends of the cycloidal motor are unbalanced, if the pressure at the left end of the cycloidal motor is larger, the hydraulic fluid flows to a hydraulic tank through the one-way valve and the overflow valve; a three-position and four-way one-way valve is adopted as the one-way valve, and the locking of the hydraulic motor and the buffering of the hydraulic fluid are realized by the additional one-way valve and the overflow valve. The method has the beneficial effects that the stability and the easy speed adjustment in the linear movement are realized, the running precision of the machine is favorably improved, and the service life of the machine is prolonged; and meanwhile, the convenient and flexible arrangement is favorably realized according to requirements, the operation controllability is improved, and the labor strength is reduced.

The invention relates to a planetary shaft difference adjusting differential mechanism. The differential mechanism is characterized in that: two output free degrees of the differential mechanism are input to two groups of planetary gear sets through a planetary gear frame, wherein the two groups of planetary gear sets are interlocked; the rotation speed difference between the two output free degrees is adjusted by controlling the two planetary gear sets; a constant-speed driving worm wheel (2) is directly driven by using a constant-speed driving shaft and a worm (1), wherein the constant-speed driving worm wheel (2) is integrated with a differential mechanism gear frame (3); and the differential mechanism is formed by arranging a differential mechanism planetary gear (4), a right half shaft bevel gear (5) and a left half shaft bevel gear (6) in the differential mechanism gear frame (3). Through the skillfully designed difference adjusting differential mechanism, the speed difference between two rotating wheels can be effectively controlled, complete constant-speed and precisely controllable rotation speed difference can be realized and then stable rectilinear motion and accurate steering can be realized.

The invention discloses a multifunctional Bluetooth earphone with an adjusting device, which comprises a Bluetooth earphone body, two groups of receivers are symmetrically arranged on the Bluetooth earphone body, and a plurality of groups of circumferentially arranged movable parts are arranged in cavities of the two groups of receivers; a driving ring is rotationally clamped on the outer wall of the receiver, and the driving ring is engaged with the input ends, located on the inner cavity wall of the receiver, of the plurality of groups of moving parts. According to the multifunctional Bluetooth earphone with the adjusting device, the driving ring and the movable part are arranged, a threaded rod can be driven to rotate through rotation, a movable plate can be driven to do linear motion through a threaded pipe, the inner diameter of a listening cavity of a receiver can be changed to adapt to the requirements of different ear sizes, a limiting sliding block is installed at the lower end of the movable plate. The movable plate can be driven by the threaded pipe to do stable linear motion, the elastic buffering cushion is fixed to the outer wall of the movable plate, the pressure between the movable plate and the ear can be buffered through the elastic buffering cushion, and the use comfort of the ear cushion is improved.

The invention relates to the technical field of guide rails, in particular to a roller guide rail pair. The roller guide rail pair comprises a T-shaped guide rail and sliding blocks, the T-shaped guide rail is composed of an upper rectangular strip and a lower rectangular strip, the lower rectangular strip is installed in the middle position of the bottom of the upper rectangular strip, the upperrectangular strip is provided with four equal oblique angles in the length direction, the oblique angles can be at least 45 degrees, the upper two oblique angles and the lower two oblique angles are symmetrically arranged, and the left two oblique angles and the right two oblique angles are symmetrically arranged; and at least two guide rail mounting holes which are provided with counterbores andpenetrate through the lower rectangular strip are formed in the upper rectangular strip, and at least one sliding block is arranged on the T-shaped guide rail. The roller guide rail pair has the characteristics that the tightness of the guide rail can be adjusted according to the size of a load on an installation site, and the roller guide rail pair is convenient to install, debug, maintain and replace and easy to produce.

The invention discloses a precise reference type production processing flow for an engine connecting rod. The production processing flow comprises the following steps of firstly, carrying out the first phase of processing before cutting of a connecting rod body and a cover, respectively carrying out blank inspection, magnetic particle inspection and rough drilling of a small-end hole, and preparing for the processing of upper and lower end surfaces, the small-end hole, two planes at bolt hole ends, an outer surface of a large-end hole, and the like in the precise basis way; then, carrying out processing after cutting of the connecting rod body and the cover, roughening the large-end hole, except for precise referencebasis, and preparing for the roughening of the bolt hole and the combining surface, and the processing of a bearing counterbored groove; and carrying out processing after cutting of the connecting rod body and the cover, and sequentially carrying out the finishing of the large-end hole after the assembly of the connecting rod, the finishing of the upper and lower end surfaces, and the finishing of the large-end hole and the small-end hole. The production processing flow has the beneficial effects that the speed of the linear movement can be smoothly adjusted, the running precision of the machine is favorably improved, the service life of the machine is prolonged, the arrangement is conveniently and flexibly realized according to requirements, the operation controllability is improved, and the labor strength is reduced.