221 results about "Ball screw drive" patented technology

The invention discloses a wear state and precision degradation prediction method for a ball screw drive system, and the method comprises the steps: employing a dual-label obtaining strategy, and constructing a'strong label + weak label 'mixed label sequence covering a whole life cycle; mapping a macroscopic working condition into a contact interface micromechanical state quantity, and converting a time domain signal into a travel domain / space domain stable sequence by adopting equal travel synchronous resampling, so as to weaken the influence of speed fluctuation on feature extraction; a double-flow physical guidance neural network is further constructed, and a physical attention mechanism is introduced to realize data feature and physical prior fusion; training is completed based on supervision loss and physical consistency constraint, and online recursive correction is carried out by using sparse laser interferometer calibration data. By adopting the method, the prediction deviation caused by equipment aging and working condition change can be reduced, and stable prediction of the wear state and the repeated positioning error degradation trend is realized.

The invention discloses an intelligent polishing machine for stone plate surface polishing. The intelligent polishing machine comprises a workbench, a stone plate rapid clamping mechanism, a grinding mechanism, a cooling mechanism and an intelligent control module. The clamping mechanism is used for locking the stone plate through combination of pneumatic clamping and vacuum adsorption, and multi-directional fixation is realized by adopting an adjustable positioning block and an inclined pressing assembly; the polishing mechanism is composed of a joint arm driven by a ball screw and a polishing disc, the polishing disc integrates an aluminum alloy base layer, a silica gel buffer layer and a diamond polishing layer, and a pressure sensor is arranged at the bottom to detect polishing pressure in real time; the intelligent control module is used for dynamically adjusting the down pressure, the rotating speed and the cooling liquid flow based on sensor feedback, monitoring the surface appearance in combination with a binocular vision camera and generating a three-dimensional polishing path; and an atomization cooling system and a negative pressure dust removal system are synchronously configured. The device has the advantages of high-precision polishing, quick reloading and green production, and is suitable for automatic machining of stones such as marble and granite.

The invention relates to the technical field of aluminum alloy die-casting, and discloses a high-silicon aluminum alloy die-casting device which comprises a workbench and further comprises a mounting frame connected to the top of the workbench, a die-casting mechanism arranged on the mounting frame, a placing frame arranged on the top of the workbench, a die mounted in the placing frame through bolts, an ejection mechanism arranged on the workbench, and a die-casting mechanism arranged on the workbench. And the temperature control mechanism is arranged at the top of the workbench and used for preheating and cooling the die. In the ejection mechanism, when a ball screw ascends to eject a workpiece, a large gear and a small gear are driven to rotate through ball transmission of a ball sleeve and the ball screw, so that a first rotating rod drives a knocking block to knock the two sides of a mold, and meanwhile, a surrounding sleeve and a lifting rod drive a knocking plate to swing to knock the bottom of the mold; the adsorption force between the workpiece and the mold is destroyed through mechanical knocking, the workpiece is prevented from deforming or remaining during ejection, and manual intervention is reduced.

The utility model relates to the technical field of motion platforms, in particular to a differential screw rigid-flexible coupling motion platform. In order to solve the problems that although a rigid-flexible coupling motion platform can reduce friction and improve precision, a flexible hinge is easy to vibrate, and lead, driving precision and load capacity of ball screw driving in a motion platform driving mode are mutually restricted, the following technical scheme is provided: the rigid-flexible coupling motion platform comprises a base, and the base is arranged in a box shape with an opening in the top; the driving mechanism is mounted in the base; the synchronous plate, the positioning plate and the motor plate are arranged above the base; the adjusting assembly is installed below the synchronous plate, the positioning plate and the motor plate and used for finely adjusting the distance between the synchronous plate and the positioning plate, and the moving end of the driving mechanism is connected with the positioning plate. The application efficiency of the motion platform in industrial production and scientific research can be improved, the increasing requirements for high precision and high stability are met, and the motion platform has important practical significance and application value.

A power transmission unit of a single-acting plunger type includes a ball screw, a ball nut driven by the ball screw, and a plunger piston coupled to the ball nut. A block housing at least partially encloses the plunger piston and the ball screw. A plunger chamber is at least partially defined by the block housing and a face of the plunger piston. The plunger chamber is selectively pressurized by reciprocal motion of the plunger piston with respect to the block housing driven by longitudinal motion of the ball nut. An electric motor selectively drives the ball screw to responsively reciprocate the plunger piston within the plunger chamber. A motor housing at least partially encloses the ball nut, the electric motor, and the plunger piston. The motor housing includes a block lip which is crimped to the block housing to maintain the motor housing in relation to the block housing.

The invention relates to the technical field of electric power accessories, in particular to electronic connector end grinding equipment which comprises a storage mechanism used for bearing an electronic connector and functional assemblies. The adsorption fixing mechanism is mounted on the storage mechanism and is used for fixing an electronic connector; the grinding mechanism is arranged on one side of the storage mechanism, and the grinding mechanism comprises a driving assembly, a rough grinding assembly and a fine grinding assembly. A strain gauge type pressure sensor is used for detecting the contact pressure between a grinding roller and an end in real time, and after a signal is fed back to a control system, the grinding roller is driven to rotate; the servo motor drives the sleeve and the grinding roller to finely adjust the feeding amount through the ball screw, the grinding pressure is stabilized within a reasonable range, excessive end grinding or material damage caused by too large pressure is effectively avoided, meanwhile, surface defect residues caused by too small pressure are prevented, and the rough grinding precision and the product consistency are remarkably improved.

The utility model discloses an ultrasonic nondestructive testing platform for metal plates, which relates to the technical field of metal plate detection, and comprises a bottom plate, the top of the bottom plate is fixedly connected with two fixed plates, the ultrasonic nondestructive testing platform for the metal plates is provided with a limiting block, a second ball screw and a first moving block, and an operator rotates a rotating rod, so that the metal plates can be accurately detected. The limiting on the metal plate is relieved, then an operator resets and rotates a second ball screw, the second ball screw drives a limiting block to move downwards, the top end of the limiting block is located in a moving groove, then the output end of a servo motor drives a third ball screw to reset and rotate, and the third ball screw drives a third moving block to move downwards; the two third moving blocks synchronously drive the worktable to move downwards to a proper height, so that a metal plate at the top of the worktable can be conveniently carried or carried to the top of the worktable, and then the height of the worktable is adjusted, so that ultrasonic nondestructive testing can be carried out on the metal plate.

The invention provides an intelligent pipe connecting device in pipe jacking and pulling construction and a construction method, and belongs to the technical field of trenchless pipeline construction. The intelligent pipe connecting device comprises an intelligent clamping mechanism, a laser centering module, a movable centering mechanism, a sealing enhancing mechanism, an online detection module and a ground remote monitoring module; the intelligent clamping mechanism comprises a self-adaptive hydraulic clamp, and a pressure sensor is arranged in the self-adaptive hydraulic clamp; the laser centering module comprises a cross laser transmitter and a high-precision CCD visual module; the movable centering mechanism comprises a ball screw driven by a servo motor and a multi-stage hydraulic jack; the sealing enhancing mechanism comprises a self-sealing joint and a hydraulic pressing device, and inverted tooth threads are arranged in the self-sealing joint; the online detection module comprises an air pressure sensor and a leakage detection camera; full-automatic pipe connection is achieved by integrating the intelligent clamping module, the laser centering module, the automatic moving module, the sealing enhancing module and the like, manual well descending operation is effectively avoided, construction safety is guaranteed, and the butt joint precision is improved.

Ball screw drive (1), with a threaded spindle (2), a spindle nut (3), and rolling elements (5), namely balls, arranged between the threaded spindle (2) and the spindle nut (3) in a thread (4), wherein spring elements (8, 9) are also arranged in the thread (4) between stops (6, 7) on the nut side, characterized in that there is at least one setting of the threaded spindle (2) and spindle nut (3), in which the balls (5) and the spring elements (8, 9) are arranged in the thread (4) with play.

The utility model relates to the technical field of metal production and processing, and discloses a straightening device capable of accurately controlling the rolling reduction of an aluminum-clad steel wire, which comprises a rack and an arranged outer frame seat, a PLC (Programmable Logic Controller) is arranged on the front side of the rack, and a touch screen is connected above the PLC; a ball screw is additionally arranged at the top of an inner cavity of the servo motor, and the surface of the ball screw is sleeved with a movable pressing block; a lower pressing roller is additionally arranged below the upper pressing roller and connected with the left side and the right side of the inner wall of the outer frame base, and a pressure sensor is installed on the upper surface of the upper pressing roller. According to the straightening device capable of accurately controlling the rolling reduction of the aluminum-clad steel wire, a pressure value is set through a touch screen, a PLC receives a signal of a pressure sensor, a servo motor is controlled to operate according to the preset pressure value, the servo motor drives a ball screw to rotate on an outer frame seat, and the ball screw drives a movable pressing block to move up and down; and the upper compression roller is matched with the lower compression roller to accurately control the rolling reduction of the aluminum-clad steel wire.

The present application provides a rail holding locking mechanism, a locking docking mechanism and a rail hanging robot. The rail hanging robot can travel along a walking guide rail, and a charging base station is arranged along the line. The rail holding locking mechanism comprises a driving mechanism including a ball screw, a driving motor and a horizontal sliding table driven by the ball screw; a connecting rod mechanism fixed to the horizontal sliding table of the driving mechanism; a sliding lifting mechanism installed at the center of the connecting rod mechanism and connected to the connecting rod mechanism; and a clamping centering mechanism, wherein the clamping centering mechanism comprises a positioning block fixed to the top end of the connecting rod mechanism and a positioning groove fixed to the bottom side of the parking fixed beam of the charging base station, and when the horizontal sliding table is driven to move to the center of the rail holding locking mechanism, the driving mechanism drives the top end of the connecting rod mechanism to move to the center, so that the positioning block of the clamping centering mechanism tightly holds the positioning groove to form a lock, and the sliding lifting mechanism vertically moves upward.

A lead screw (1) for a threaded drive (10), in particular a ball screw drive, comprises an inner sleeve (2) and a sleeve-shaped outer part (3) fixedly connected to the inner sleeve and having a screw thread (5), in which the inner sleeve (2) and the outer part (3) are made of different materials. The inner sleeve (2) is shaped in the outer part (3) in a form-locked manner such that the inner sleeve replicates the spindle thread (5).

This utility model discloses an automatic electrolyte injection machine for soft-pack batteries, relating to the field of lithium battery manufacturing technology. It includes a frame, an injection mechanism, a flaring mechanism, a turntable mechanism, and a centering clamping mechanism. The injection mechanism drives the injection plate to rise and fall via a lifting module. The injection tube is equipped with an independent quantitative injection pump and a coaxial nitrogen injection pipe, achieving precise electrolyte injection and oxidation protection. The flaring mechanism uses a vacuum suction cup to adsorb the battery opening, and a ball screw drives the flaring plate to open and close laterally. The centering clamping mechanism uses an elastic buffer component and a pressure sensor to adaptively clamp the battery, avoiding damage to the aluminum-plastic film. The turntable mechanism is driven by a direct-drive motor to rotate the positioning turntable in increments, enabling continuous operation with multiple stations. This utility model integrates nitrogen protection, residual liquid adsorption, and flexible clamping functions, solving the problems of low efficiency, poor injection accuracy, and contamination risk of traditional equipment. It is suitable for mass production of high-consistency soft-pack batteries.

This utility model relates to a double-acting arc-extinguishing chamber based on ball screw transmission, including a housing, a moving contact and a stationary contact disposed within the housing, a ball screw rotatably disposed within the housing, a first fixed block fixedly connected to the moving contact, and a second fixed block fixedly connected to the stationary contact. One end of the ball screw is connected to a drive device. The ball screw has a first threaded section and a second threaded section with opposite directions of rotation. The first fixed block is threadedly connected to the first threaded section, and the second fixed block is threadedly connected to the second threaded section. A first guide rail is fixedly disposed on the housing, slidingly engaging with the first fixed block, and a second guide rail is slidably engaged with the second fixed block. This utility model, through ball screw transmission, converts rotational motion into linear motion of the first and second fixed blocks, realizing the opposite or opposite movements of the moving and stationary contacts, improving the closing and opening speeds of the arc-extinguishing chamber, shortening the breaking time, and effectively improving the breaking capacity of the circuit breaker.

The utility model discloses a full servo high -speed punch groove machine with tangential straight line chute punch -stamping structure, including punch press bottom plate, index seat and tablet seat, inside one end of punch press bottom plate is installed with bearing seat, and one end of bearing seat is installed with first servo motor, the output shaft of first servo motor is connected with ball screw drive, and ball screw is installed inside punch press bottom plate, the utility model discloses, when processing, drive ball screw to rotate through first servo motor, cooperate nut seat to drive index seat whole left and right translation, synchronously drive fixed silicon steel sheet on index shaft to translate, and then adjust the punch groove position of silicon steel sheet, and this design makes full use of the inside space of index seat and punch press bottom plate, does not need to adjust the thickness of workstation board, gives the maximum spacing between workstation board and punch head, and is convenient for mould replacement and robot silicon steel sheet taking and placing, and the workstation board of fixed installation helps to improve the punch groove precision.

Featuring an anti-rotation device: at least one locking element (2) provided on a moving element configured to move longitudinally without rotation and projecting outwards in a radial direction from the surface of the moving element at at least one point, and at least one guide element (5) having a groove and configured to be arranged in a recess of an enclosure of the moving element such that its groove is arranged substantially parallel to the longitudinal axis of the moving element, and to guide the protruding part of the locking element (2) in its groove during longitudinal movement of the moving element, wherein the at least one guide element (5) is designed such that it has no degree of freedom along the longitudinal axis of the groove, but at least the rotational degree of freedom about an axis parallel to the longitudinal axis of the groove.

The invention discloses an X-ray tomography system for cultural relic standing, which is characterized by comprising a rack, a scanning bed body, a guide rail motor, a guide rail and a ball screw, the rack is of an annular structure, and an X-ray source and a linear array detector are arranged on the rack; the rack is located on the guide rail, and the guide rail motor is connected with the rack through the ball screw. The guide rail motor is used for driving the ball screw to drive the rack to translate along the guide rail; the scanning bed body is located in the center of the annular structure, is parallel to the guide rail, and is used for placing a to-be-scanned cultural relic and scanning the cultural relic in the horizontal direction when the rack translates along the guide rail; and when the rack rotates along the cultural relics, the cultural relics are rotationally scanned. The invention relates to a high-energy X-ray tomography system capable of meeting the requirement of non-rotating low-gravity-center placement of cultural relics, and full-view X-ray tomography of the cultural relics in a standing state can be realized.

This application involves a suspended ball screw vehicle box extension mechanism, including an extendable box, a load-bearing plate, a carrying box, a support frame, a modular guide assembly, and a ball screw drive assembly. The extendable box is set at the opening of the vehicle body, with corresponding carrying boxes below the relative side walls. The load-bearing plate is fixed on the carrying box, the modular guide assembly is fixed on one side to the support frame and on the other side to the load-bearing plate, and the ball screw drive assembly is fixed to the support frame and load-bearing plate. The carrying box has a long slot at the bottom, allowing it to slide along the lower end of the support frame. This application can achieve the extension and retraction of the vehicle body, increasing the usable space within the vehicle.

A tensioning module for an electromechanical wheel brake and to an electromechanical brake device comprises a stop bearing washer; an axial bearing; and a ball screw drive. The the ball screw drive comprises a spindle and a nut. The stop bearing washer is arranged at an axial end of a radial extension of the spindle, An anti-rotation safeguard arranged between the nut and a housing surrounding the tensioning module. The tensioning module is used to move a brake piston in the electromechanically operable wheel brake of a motor vehicle.

The utility model relates to the technical field of wood processing, in particular to a planing and drilling integrated device for wood, which comprises a base and a conveyor belt arranged on the upper end face of the base, a planing component is arranged at the upper end of the base, and the planing component comprises four groups of mutually symmetrical adjusting seats arranged at the upper end of the base. When the wood is conveyed to the lower end of the square frame, a conveying belt is closed, a first motor is started, a first ball screw drives a first ball screw sleeve to slide downwards till the wood is located at the middle end of the square frame, a first air cylinder is started to extend, four sets of planing cutters are all attached to the outer wall of the wood, and a second motor is started to drive a second ball screw sleeve to slide; the first air cylinder drives the planing cutters to slide along the surface of wood to grind and cut the wood, the four sets of planing cutters can cut multiple edges of the wood at the same time, the wood processing efficiency is improved, and the wood cutting time is saved.

To improve durability of an injection control part for injection of a plasticized material at a predetermined pressure to the outside.SOLUTION: A material discharge device includes a cylinder connected to a channel through which a plasticization material flows, a plunger reciprocating in the cylinder, a ball screw configured so as to detach the plunger on one end, a nut connecting with the ball screw, and a suction delivery part having a motor that drives the plunger via the ball screw, wherein the motor has a rotor and a stator arranged opposite to the rotor, either one of the rotor and the stator has a magnet, either one of the rotor and the stator is connected with an outer peripheral surface of the nut, and the rotor rotates in a state of having a spacing to the stator by a magnetic force of the magnet.SELECTED DRAWING: Figure 5

The piston-free type guide rail guiding electric cylinder structurally comprises a hollow cylindrical cylinder body, double-V-shaped anti-rotation groove linear guide rails which are symmetrically arranged, a multi-stage nested type rigid push rod, a ball screw driving assembly and a corrugated pipe sealing cover. Linear guide rails (the symmetric angle is 90-150 degrees) are symmetrically distributed on the outer surface of the cylinder body along the circumference, the cross section of each guide rail is of a double-V-shaped groove structure, the groove depth is 1 / 4-1 / 3 of the height of the cross section of the guide rail, the surface of each guide rail is coated with a silicon nitride-tungsten carbide composite ceramic layer (the thickness is 50-80 micrometers, and the microhardness is larger than or equal to 1500 HV), and the abrasion resistance and the deflection prevention capacity are remarkably improved.

The invention discloses a mold opening and closing stroke control method of an electric injection molding machine, which comprises the following steps: S1, acquiring key geometric parameters of a toggle rod system in a five-hinge-point inclined double-toggle mold closing mechanism, and adjusting main variable conditions of a mechanism kinematic chain based on theoretical formulas of a movable mold plate stroke (Sm) and a ball screw driving stroke (So), data association points between the driving stroke of the ball screw and the stroke of the movable template are obtained; s2, constructing a function mapping model between a moving template stroke (Sm) and a ball screw driving stroke (So) according to the data obtained in the step S1, and forming a fitting expression in a form of Sm = f (So); and S3, establishing a reverse fitting function, and forming function mapping of So = (Sm). Reverse control is realized by precisely fitting the relationship between the template and the stroke of the ball screw, so that errors caused by using an interpolation method are reduced, the system control precision in the mold opening and closing process is improved, the calculation efficiency is greatly improved, the storage space is saved, and the cost is further reduced.

A kind of ball screw drive error compensation method based on composite integral control, due to the influence of manufacturing and assembly error and other factors, ball screw system has certain error and deviation, in order to reduce the influence on the precision and performance of machine tool system, a kind of error compensation method of composite integral control is designed, considering the influence of friction, stiffness, lead error and elastic deformation, first, the corresponding model is established to estimate the corresponding factors;Second, by designing integral sliding surface and error observer to reduce the error in ball screw composite control system and improve the anti-interference ability of system, ensure the stability of closed-loop system, can effectively reduce the error of ball screw drive, has robustness to the change of friction, cutting force and other interference.

A ball screw drive, in particular for an actuator of a hydraulic brake system, includes two spindle drive elements, namely a threaded spindle and a spindle nut which can be rotated relative to the threaded spindle. One of the spindle drive elements is provided as a rotatable drive element, and the second spindle drive element is provided as an output element which can be moved in a secured manner against rotation. The ball screw drive additionally includes a damping element that is configured as an annular element concentric relative to a central axis of the threaded spindle. The annular element is rigidly connected to one of the two spindle drive elements, and can be simultaneously rotated and moved relative to the other spindle drive element in a play-free manner.

The utility model discloses roller equipment for tobacco processing, which is applied to the technical field of tobacco processing equipment, and is characterized in that a humidifying and scraping mechanism comprises a scraping motor which is fixedly arranged on the outer wall of an outer cylinder through a motor frame I, the output end of the scraping motor is fixedly connected with a circular shaft through a coupler, the circular shaft is hollow, and the scraping motor is arranged on the outer wall of the outer cylinder. The device has the technical effects that water mist generated by the ultrasonic humidifier enters an inner cavity of the inner barrel through the humidifying pipe, the cylindrical shell, an inner cavity of the circular shaft and the thin circular hole, tobacco leaves in the inner barrel are humidified, after humidification is completed, the scraping motor is started to drive the circular shaft to rotate, the circular shaft is driven to rotate, and then the tobacco leaves are scraped. The ball screw drives the round scraper to move leftwards, tobacco leaves in an inner cavity of the inner barrel are pushed to a port of the inner barrel, the side wall of the round scraper can scrape off the tobacco leaves adhering to the inner wall of the inner barrel, the interior of the inner barrel is clean, extra cleaning is not needed, and meanwhile the humidified tobacco leaves can be conveniently moved out.

The utility model discloses a steel pipe inner diameter detection device with an adjustable limiting structure, which relates to the technical field of pipeline detection devices and comprises a cylindrical main shell, and a limiting assembly with an adjustable extension range is arranged in the cylindrical main shell. According to the steel pipe inner diameter detection device with the adjustable limiting structure, by arranging a servo motor, a motor fixing plate, a ball screw, an optical axis, a screw sliding block, a hinge seat, an extension arm, a limiting groove, a driving wheel, a driving motor, a movable groove and a limiting pin shaft, when the steel pipe inner diameter detection device is used, the servo motor drives the ball screw to rotate, the ball screw drives the screw sliding block to move rightwards, and the screw sliding block is driven to move rightwards; the extension arm extends outwards by taking the limiting pin shaft as a fulcrum, the driving motor drives the driving wheel to continuously rotate through the belt pulley, and the equipment rapidly advances in the pipeline and can adapt to pipelines of different sizes, so that the laser distance measuring sensor can conveniently collect inner diameter information, and the functions of adjusting the size and adapting to the pipe diameter are realized; the problem that the device does not have the function of adjusting the size to adapt to the pipe diameter is solved.

The utility model discloses an automatic welding slag cleaning device for a main welding seam of H-shaped steel. The automatic welding slag cleaning device comprises a welding slag cleaning mechanism and a distance adjusting mechanism, the welding slag cleaning mechanism comprises a welding slag cleaning base, a welding slag cleaning motor is fixed to the welding slag cleaning base, a rotating disc shaft inserted into the welding slag cleaning base is sleeved with a rotating disc, the welding slag cleaning motor is in transmission connection with the rotating disc through a welding slag cleaning transmission mechanism, one end of a rocker is fixed to the rotating disc, and the other end of the rocker is fixedly connected with an impact shaft. The distance adjusting mechanism comprises a distance adjusting base, a distance adjusting motor is fixed to one end of the distance adjusting base, a ball screw transmission mechanism is fixed to the distance adjusting base, and the ball screw transmission mechanism is connected with the distance adjusting motor and driven by the distance adjusting motor. And a screw rod sliding table on the ball screw rod transmission mechanism is fixedly connected with the welding slag cleaning base. The device disclosed by the utility model is reasonable in structural design, capable of realizing mechanical slag removal, high in operation efficiency and good in application prospect.

The invention relates to a method for producing a ball screw (10), wherein the ball screw (10) is first formed by producing the ball thread (12) from a semi-finished product. After producing the ball thread (12), the surface of the ball thread (12) of the ball screw (10) is smooth-rolled.

The utility model relates to a small-size electric actuator. The small-size electric actuator comprises a driving motor, a small synchronous belt pulley connected with the driving motor, a large synchronous belt pulley connected with the small synchronous belt pulley, a ball screw connected with the large synchronous belt pulley, and a screw nut connected with the ball screw, the output guide sleeve is connected with the lead screw nut; the output connecting block is connected with the output guide sleeve; the driving motor is used for driving the small synchronous belt pulley to rotate, the small synchronous belt pulley is used for driving the large synchronous belt pulley to rotate through a synchronous belt, the large synchronous belt pulley is used for driving the ball screw to rotate, and the ball screw is used for driving the lead screw nut to move linearly. The lead screw nut is used for driving the output guide sleeve to move linearly, and the output guide sleeve is used for driving the output connecting block to move linearly. The small-size electric actuator is simple in structure, small in occupied space and low in production and manufacturing cost.