380 results about "Ball screw drive" patented technology

The invention discloses a multi-nozzle 3D printer and a printing method. The multi-nozzle 3D printer comprises a lifting rotary tray, a printing nozzle assembly moving in the direction X and the direction Y and six printing nozzles synchronously stretching out and drawing back in the radial direction of a supporting arm. The printing nozzles and the tray relatively rotate, and the multi-nozzle 3D printer is especially suitable for printing a large. A ball screw drives the rotary tray to move vertically, and product stacking in the height direction is achieved. A fifth driving motor drives a large gear to rotate, six small gears are engaged with the large gear, the small gears do reciprocating motion through a synchronous belt and a sliding block in the radial direction, and all the printing nozzles can be driven to work synchronously; at most six products can be printed at the same time, so that the printing work efficiency of small products is greatly improved; or the six printing nozzles are used for printing a large product at the same time, the six printing nozzles work at the same time, therefore, the printing speed of a single product is increased, multiple purposes of the printer are achieved, and flexibility and convenience are achieved.

The invention consists of turbine steam valve actuation apparatus providing both precise modulation of valve position control and independent fail-safe emergency valve closure regardless of modulated position. The invention consists of a tandem arrangement of an electric valve actuator (utilizing a roller or ball screw drive mechanism) operated by a conventional servo position controller under resolver feedback with a hydraulic cylinder of equal or greater stroke supplied by a conventional synthetic fluid delivery system. The electric actuator and the hydraulic cylinder are reversible in installed positions and applicable to both direct steam valve stem coupling and operation of fulcrumed lever valve racks.

The invention relates to a travel driving device for a robot, which comprises a planar frame inner driving device. The planar frame inner driving device comprises a lifting driving device and a left-right horizontal driving device, the left-right horizontal driving device drives a linear module slider to horizontally move left and right through a servo motor, a manipulator of the spraying robot horizontally moves left and right along with the linear module slider, the lifting driving device drives a ball screw to rotate through a servo motor, and the ball screw drives a ball nut slider seat to lift, so that the left-right horizontal driving device is driven to vertically lift. By implementing the composite travel driving device for the intelligent spraying robot, the problems of complicated structure, inconvenience in installation and maintenance, cumbersome control and the like of a parallel transmission robot and a series transmission robot can be solved.

The invention relates to the technical field of electronic component machining equipment, in particular to a charging tray picking-placing and pushing device. The charging tray picking-placing and pushing device comprises a charging tray pushing mechanism, a charging tray falling-placing mechanism and a controller, wherein the charging tray falling-placing mechanism and the controller are arranged on the upper portion of the charging tray pushing mechanism. The charging tray pushing mechanism comprises a mounting frame, two guide rails, an electric ball screw and a pushing plate, wherein the two guide rails are parallelly arranged on the upper portion of the mounting frame, the electric ball screw is fixedly mounted in the mounting frame, and the pushing plate is fixedly mounted on a sliding block of the electric ball screw. The charging tray falling-placing mechanism comprises a containing structure and at least one pair of electric control extending-retracting baffles, wherein the containing structure is mounted on the mounting frame and used for containing charging trays placed in a stacking mode, and the at least one pair of electric control extending-retracting baffles are oppositely arranged in the containing structure and used for supporting the charging trays. The distance between each electric control extending-retracting baffle and the corresponding sliding rail is exactly the thickness of one charging tray. When the controller controls the electric control extending-retracting baffles to retract, the charging trays falls down into the guide rails, and the electric ball screw drives the pushing plate under control of the controller to push the charging trays to move to the designated position in the guide rails.

The invention relates to a leg structure of a quadruped bionic robot. The leg structure comprises a shoulder blade, a shoulder joint, a femur (thign-bone), a knee joint, a tibia (shin bone), a passive ankle joint, a sole and a driving module. The shoulder joint of the leg structure of the quadruped bionic robot is connected with the shoulder blade and the femur, the knee joint is connected with the femur and the tibia, and the passive ankle joint is connected with the tibia and the sole. The joints are driven by ball screws, and accordingly the leg structure has the advantages of high driving efficiency and precision and the like; as the friction force of rolling friction is low, heat generated by friction is reduced and energy consumption is decreased. As the shoulder blade and the femur are of hollow casing structures, the weight is reduced and the energy consumption is further reduced. Since the femur is of elastic buffering and spring energy-storage structure, energy consumption can be further decreased and impact to ground can be buffered. Since the tail ankle joint is provided with a ball hinge coupling and the sole is in the shape of a circular face, the bionic robot can fall to the ground more stably.

The invention discloses a spherical articulated type three-coordinate flexible attitude-adjusting unit which comprises a base seat, an X direction ballscrew, a longitudinal planker, a cross planker, an upper planker, a supporting cylinder body, a telescopic column, a clamping sleeve, a ball-end clamping device, a technological ball-end, a Z direction grating ruler, a Z direction ballscrew, a worm gear reducer, a Y direction guide rail slide, a Y direction linear guide rail, an X direction reducer, an X direction servo motor, an X direction linear guide rail, an X direction guide rail slide, a Y direction servo motor, a Y direction reducer, a Z direction servo motor and a Y direction ballscrew, wherein, the closed-loop control is carried out through the driving of the servo motor and the ballscrews and the feedback of the grating ruler, the accurate positioning in the X, Y and Z directions is realized, and an organ cover is provided for protection. The spherical articulated type three-coordinate flexible attitude-adjusting unit realizes the accurate space positioning through the gang control in the three directions, a force sensor is arranged in the Z direction to ensure the safety, the stability and the reliability of the operation, the ball-end clamping device is provided with the characteristic of automatic following, and attitude-adjusting systems with various operating performances can be formed through the attitude-adjusting unit as the basic module.

The invention discloses a multi-function plate ink-jet printing machine with moving machine head, comprising machine frame foundation, ball screw, bearing seat of ball screw, moving nut of ball screw, linear guide, linear guide slider, machine head component, machine head support beam, machine head connecting beam, printing plate, plate support, double ink supply boxes, servo motor. Structure characteristics are that the machine head component is fixed with the machine head connecting beam by the machine head support beam; the central point of machine head connecting beam is connected with the moving nut of ball screw; two ends of machine head connecting beam are supported on two parallel linear guides at two sides of machine frame foundation by four liner guide sliders; the ball screw is fixed on the machine frame foundation by the bearing seat of ball screw; one end is connected with the servo motor directly and the ball screw drives the moving nut of ball screw. Structure merits are that the servo motor connecting with the ball screw directly drives the machine head component to accomplish ink-jet printing on accurate position; practical occupied space of machine is decreased; the design is reasonable, new and concise.

The invention relates to a six-freedom-degree industrial robot with ball screw pair transmission. Waist whole circle rotating is achieved through a waist swing mechanism, a shoulder swing mechanism and an elbow swing mechanism form a two-freedom-degree parallel mechanism to achieve two-dimensional horizontal moving, and ball screws are driven by motors arranged on a swing platform respectively. Three mutual-orthometric rotating shafts connected through a front arm rotating mechanism, a wrist swing mechanism and a tool clamping base swing mechanism are driven independently by three motors respectively, and three-freedom-degree gesture adjusting of an executing tail end tool is achieved. The advantage of the large working space of a serial mechanism is kept, ball screw transmission is used, the rigidness of the mechanism is guaranteed, the positions of the driving motors are lowered, good dynamic characteristics are obtained, bearing capacity is large, high-speed or superspeed operation can be easily achieved, and the six-freedom-degree industrial robot has the advantages that side gaps do not exist, rigidness is high, micro-motion feeding can be conveniently achieved, accumulated errors are small, motion accuracy is high, positive and athwart kinematics solving is convenient, and control is convenient.

The invention discloses a numerical control cutting machine, which comprises an upper workbench, a guide post, a guide sleeve, a screw support, a ball screw, a numerical control moving head, a connecting seat, a step motor, a rotary die holder, a servomotor, a workbench, a balancing connecting rod, a swing plate, a connecting plate, an oil cylinder, and a numerical control box. The computer programming control technology and a human-computer interface are adopted by the machine, a chain wheel on the servomotor drives a chain wheel on the ball screw through a chain, so that the connecting seat on the ball screw drives the numerical control moving head to advance and retreat in the longitudinal direction to realize mobile cutting; the rotary die holder on the numerical control moving head driven by the step motor can rotate 360 DEG; layout and blanking are carried out digitally; and the computer controls a hydraulic system to push the guide post on the oil cylinder to drive a balance mechanism, so that the upper workbench drives the numerical control moving head ascend and descend to realize automatic cutting. The machine has quick response, high precision, stable mechanical properties, low failure rate, high automation degree, and high production efficiency without waste and ungraded product, is convenient and safe to operate, and obviously saves energy.

An omni-directional mobile carrying trolley comprises a framework, a travelling module and a carrying module. The travelling module comprises four Mecanum omni-directional wheels and a control module. Each Mecanum omni-directional wheel is provided with a direct-current motor used for driving the wheel. Each direct-current motor regulates the rotating speed according to a control instruction sent by the control module. The carrying module comprises horizontal object stages arranged on the upper surface of the framework, a ball screw drive motor and a push rod motor. The object stages are divided into the first object stage and the second object stage along the central axis. A slide rail is formed between the first object stage and the second object stage. A ball screw is embedded in the slide rail. A main electric push rod perpendicular to the object stages is arranged on a slide nut of the ball screw. The main electric push rod is driven by the push rod motor. A carrying fork is arranged at the top of a movable rod. The omni-directional mobile carrying trolley is simple in structure, small in size and capable of moving in all directions; and when cargos are carried, the cargos and the carrying fork are moved above the trolley, and no excessive space is occupied.

The invention discloses an end effector for automatically drilling a curved surface, comprising a drilling unit, a compressing unit, a normal-direction measuring unit, a positioning ring, a two-dimensional normal-direction adjusting unit and an external support ring. The drilling unit and the compressing unit are fixed on the positioning ring; the normal-direction measuring unit is fixed on the compressing unit; a compressing head is connected to the compressing unit through a spherical joint; a measuring plate is fixed on the inner side of the compressing head; the measuring plate can rotate along with the compressing head; four displacement sensors are fixed on four corners of the compressing unit; the four corners of the measuring plate respectively contact with the four displacement sensors; the four displacement sensors respectively measure the displacements of four corners of the measuring plate so as to calculate the normal direction of the curved surface at the drilling coordinate; the compressing unit is driven by a servo motor and a ball screw; the compressing force can be controlled by controlling the torque of the servo motor; and the positioning rind is fixed on the two-dimensional normal-direction adjusting unit and can rotate around the X axis and the Y axis. Therefore, the normal-direction adjustment can be finished. The end effector with the structure can better finish drilling the curved surface.

The invention discloses a vacuum adsorption type three-coordinate flexible attitude-adjusting unit which comprises a base seat, an X direction ballscrew, an X direction reducer, an X direction servo motor, longitudinal and cross plankers, an upper planker, a supporting cylinder body, a telescopic column, a clamping sleeve, a vaccum adsorption ball-end, a Z direction ballscrew, a Z direction grating ruler, a worm gear reducer, a Y direction guide rail slide, a Y direction linear guide, an X direction organ cover, an X direction linear guide, an X direction guide rail slide, a Y direction ballscrew, a Y direction organ cover, a Z direction servo motor, a Y direction reducer and a Y direction servo motor; the closed-loop control is carried out through the driving of the servo motor and the ballscrew and the feedback of the grating ruler, the accurate positioning in the X, Y and Z directions is realized, and the organ cover is arranged in the corresponding direction for protecting. The component part with complex profile can be supported and fixed through the vacuum adsorption, the supporting is steady and reliable, and the cooperative motion can be realized in the three directions. By adopting the vacuum adsorption type three-coordinate flexible attitude-adjusting unit as the core unit, the attitude-adjusting systems for different purposes can be formed through certain configuration.

A numerically-controlled groove planing machine for cutting a V-shaped groove in a metal sheet comprises a base part, an upper frame part, a tool rest part and a metal sheet presser foot assembly, wherein the upper frame part is located above the base part and can move lengthways along linear rails fixed on the base part; the tool rest part is driven by a ball screw and can move transversely along linear rails fixed on the upper frame part; and a tool fixing plate can be driven by a ball screw to move up and down along linear rails fixed on the tool rest part and meanwhile drive a tool to perform tool feeding and retracting motion. The groove planing machine has the advantages as follows: since the upper frame part can move lengthways on the base part, V-shaped groove cutting in a large-scale piece is realized; and meanwhile, since the tool rest part adopts a linear rail structure to enable the tool to be fed and retracted up and down along the linear rails, the machining precision of the V-shaped groove is improved, and high automation and high efficiency in V-shaped groove machining are realized.

The invention discloses a miniature table press of a ball screw driven by an AC servo direct drive motor. The miniature table press comprises an AC servo motor, wherein the AC servo motor drives a driving wheel to rotate through a planet wheel speed reducer, a belt transmits the torque of the driving wheel to a driven wheel and a nut, threads are arranged at the outside of the upper end of a nut sleeve to be matched with the nut, the nut sleeve is installed on a ball screw, the nut sleeve rotates in situ and drives the ball screw to rotate, the other end of the ball screw is connected with a ball screw pressing plate, the ball screw pressing plate is limited by a guide post to rotate and only perform linear motion, an upper mould is connected with the ball screw, the rotation motion of the nut sleeve is converted into linear motion through the ball screw pressing plate, the ball screw and the upper mould linearly reciprocate according to the direction of the guide post to stamp a plate to be formed, the plate is formed in a lower mould, a grating ruler monitors the position of the upper mould, and the miniature table press disclosed by the invention can realize a plurality of kinds of pressing curves, improve the pin forming quality of electronic chips and reduce the waste product rate.

A hemming machine for sheet metal is disclosed having a base adapted to be supported on a ground support surface. A cradle is vertically slidably mounted to the base while a nest is mounted to the cradle and adapted to support the part to be hemmed. Hemming tooling is mounted to the base and movable between an extended position in which the hemming tooling overlies the nest, and a retracted position in which the hemming tooling is spaced laterally outwardly from the nest. A pair of spaced ball screws are rotatably mounted to the base and threadably connected to the cradle on opposite sides of the nest so that rotation of the ball screws vertically displaces the cradle relative to the base. A single drive motor is drivingly connected through a two speed gear box to both ball screws to rotatably drive the ball screws in synchronism with each other.

An injection unit including a heating barrel and an injection screw rotationally and axially movable and placed in the heating barrel is disposed on one side of a clamping mechanism for clamping a mold. The injection screw is driven and controlled for operation through a ball screw by an electric motor. Products, each of a moving speed of the ball screw and an operating current supplied to the electric motor in a unit time, are accumulated to calculate a total energy value indicating the amount of total energy supplied to the ball screw. A life energy value is predetermined on the basis of products, each of force generated by the ball screw and a moving speed of the ball screw. It is decided that a life of the ball screw has terminated when the total energy value A is equal to or greater than the life energy B (A>=B).

A space locking docking mechanism, the movable bracket is set on the fixed bracket and can move relative to the fixed bracket, two ">" shaped locking links are symmetrically hinged on both sides of the movable bracket, and there are grooves on the inner surface of the locking links . The disc spring is installed at the bottom of the movable bracket, the nut of the ball screw is axially fixed, the screw of the ball screw passes through the movable bracket, the disc spring and the fixed bracket in sequence, and the end is connected with the support frame, and the support frame is supported on the locking connecting rod in the groove. The two ends of the receiving spring are respectively fixed on the movable bracket and the locking link to provide the restoring force when the locking link rotates relative to the movable bracket. When working, the nut of the ball screw rotates under the action of external force, and the screw driving the ball screw drives the support frame, locking connecting rod, and movable support to move together. After moving to a certain distance, the disc spring is compressed by the fixed support, and the support frame Slip out from the inner surface groove of the locking link and slide along the inner surface of the locking link, and spread the upper end of the locking link to achieve locking of the target.

A shear mode mechanism capable of being controlled in a numerical mode comprises a support unit and further comprises a machine base, a numerical control motor arranged on the machine base, and a ball screw driven by the numerical control motor. End portions of multiple pairs of crossed shear mode supports are sequentially hinged to one another to form the support unit, one of the two ends of the bottoms of the nethermost pair of shear mode supports of the support unit is used as the original point and hinged to the machine base, the other of the two ends of the bottoms of the nethermost pair of shear mode supports of the support unit is hinged to a nut of the ball screw, and therefore the displacement of the shear mode mechanism in the vertical direction can be accurately calculated according to the travel of the numerical control motor, and the aim of controlling the displacement of the shear mode mechanism in the numerical mode is achieved. The shear mode mechanism is accurate in stretching positioning and large in stretching ratio in comparison with a shear mode mechanism, driven by a servo motor, of a joint type mechanical arm. In addition, when the shear mode mechanisms are combined in series or in parallel or in series and in parallel to form a shear mode mechanism drive system, the loading capacity and the stability of the shear mode mechanisms can be greatly improved.

The invention provides a dynamic driving system adopting servo force. The dynamic driving system adopting servo force comprises a mechanical body, a motor, a force sensor, an A / D converter, a controller and a servo driver, wherein the mechanical body comprises a front loading disc and a rear loading disc, a plurality of springs are arranged between the front loading disc and the rear loading disc, and the rear loading disc is fixed to a nut of a ball screw in the mechanical body; the motor can drive the ball screw, and the ball screw drives the rear loading disc, so that the front loading disc and the rear loading disc move relatively to compress the springs to enable loading force to be generated. During loading, the controller controls the servo driver to drive the motor according to set force and signals of the force sensor, and thus accurate loading according to the set force can be achieved. According to the dynamic driving system adopting servo force, due to the fact that the compression springs which are connected in parallel are adopted, output force is increased in a multiplied mode; due to the fact that the compression springs are fixed to the loading discs which can roll along a fixed support and the stroke is determined by the length of the ball screw, the dynamic driving system has the advantages that the output force is large and the stroke is large; due to the fact that a self-adaptive sliding-mode control algorithm with a disturbance observer involved is adopted by the controller, dynamic high-precision loading can be achieved under the condition that external disturbance exists.

A docking ring capturing and locking mechanism comprises at least three capturing handles; each capturing handle comprises a movable paw, a motor, a ball screw, a transmission gear, a movable paw switching piece, a linear guide rail and a shell; the motors drive the ball screws to rotate through the transmission gears; the movable paws are mounted on the ball screws through the movable paw switching pieces; the ball screws drive the movable paws to move along the linear guide rails; the ball screws and the linear guide rails are mounted on the shells; and the movable paws are used for capturing and locking external docking rings. The docking ring capturing and locking mechanism can directly cooperate with a control sub system to finish all capturing, docking and locking tasks without othermechanisms such as a mechanical arm to carry out preliminary assisted capturing and connection and is especially suitable for on-orbit and follow-up uncustomized satellites to realize on-orbit services.

In a reciprocating compressor with delivery rate control the actuation device (3) for the valve unloader (2) of the suction valve (1) to be held open comprises as drive an electric motor (5), whose driven element (6) in conjunction with the non-rotating lifting element (10) of the valve unloader (2) and the rolling elements (8) arranged in between forma ball screw drive. This results in a small-dimensioned, precisely to be regulated actuation device (3) with high actuating forces and with high motion dynamic.

The invention discloses a lifting platform system. The lifting platform system is characterized by comprising a motor, a transmission mechanism and a platform which is used for placing workpieces. A plurality of lifting guide rods are connected below the periphery of the platform. A lifting shaft is connected below the middle of the platform. Each lifting guide rod is connected with a straight line bearing in a sleeved mode. The other end of each lifting guide rod is connected with a lifting plate. The lifting shaft is connected with a ball screw which penetrates through the lifting plate. The lifting plate and the ball screw driven by the transmission mechanism of the motor can be freely lifted. The lifting platform system has the advantages that convenience is brought to operation through lifting driven by the motor, and meanwhile the plurality of lifting guide rods are connected below the periphery of the platform, the lifting guide rods have an effect on the platform when the motor drives the lifting shaft to drive the platform to achieve the lifting so that the platform is enabled to reliably keep on the same horizontal surface, and braced force to the platform is capable of being strengthened.

The invention relates to a modularized multi-control Cartesian coordinate robot, which comprises a linear robot and a rotating robot; the linear robot is provided with a linear robot or a rotating robot; the number of the liner robot is at least one; the number of the rotating robot is at least one; the linear robot is provided with a motor which drives a ball screw through a coupler, and a screw nut on the ball screw drives a motion platform to perform linear motion; and the rotating robot is provided with a motor which drives a worm gear through a coupler, and the worm gear drives a rotating platform to rotate. Students can constitute a multi-degree-of-freedom robot through recombining and constructing certain modules by hands, so that the method allows the students to comprehensively grasp the application development and the integration technology of the mechatronics technology, helps the students to recognize constituent parts of a system from the perspective of the whole system so as to grasp the constitution, functions and control principles of an electromechanical control system, and trains the practical ability and the innovation and development ability of the students.

The invention provides an intelligent leather cloth clipping device. The intelligent leather cloth clipping device comprises a clipping board, a precision synchronous belt drive system, a gantry truss, a ball screw drive system, a clipping system, pressing devices and a control panel. The precision synchronous belt drive system is arranged on the clipping board, the gantry truss is arranged on the clipping board, the ball screw drive system is arranged on the gantry truss, the clipping system is arranged on the ball screw drive system, the pressing devices are arranged at the front end and the rear end of the clipping board, and the control panel is arranged on the clipping board through a control panel supporting frame. According to the intelligent leather cloth clipping device, the clipping process of leather cloth is automated, and multiple layers of leather cloth can be clipped at a time. Due to the fact that the automation degree of the whole process is high and precision is greatly improved compared with manual operation, the clipping efficiency and quality precision of leather or cloth are greatly improved, the quality of bags, suitcases and garments is improved, and development of bag, suitcase and garment industries is promoted.

The invention provides a conveying system for an integrated circuit chip loader framework. The conveying system comprises a feeding mechanism, a track mechanism, a discharging mechanism and program controlled equipment, wherein the feeding mechanism comprises a feeding mechanical hand and a feeding sensor, an open type platform is adopted for the track mechanism, the width and the thickness of a lead framework groove in the track mechanism can be regulated, the discharging mechanism comprises a discharging mechanical hand and a discharging sensor, and the conveying system is driven by a ball screw driven a motor. The conveying system is suitable for conveying lead frameworks of various specifications, is accurate in feeding amount control and high in automation degree, and can be used in an integrated circuit chip loader in scale production.

The invention relates to a small and medium-sized internal high pressure forming machine for bulging pressure pulsation loading. An electro-hydraulic servo valve is used for controlling linear supercharging of a pressure cylinder, an impulse cylinder piston rod is driven by a servo motor and a ball screw to reciprocate to form pulsating pressure, pulsating pressure is formed without main engine system pressure change or reciprocating advancing and retreating of the pressure cylinder, and unstable status caused by fluctuation of system pressure or high-frequency fluttering of the pressure cylinder is avoided; conventional linear loading, sine wave pulsation loading, triangular wave pulsation loading, rectangular wave pulsation loading and time-sharing combined loading of the above four modes of bulging pressure during internal high pressure forming can be realized, pressure pulsation frequency and amplitude are adjustable within a certain range, process application range of equipment is enlarged, and production forming quality is improved.

The invention provides a system and method of lifting and conveying a concrete slab and / or associated works. The slab has an area includes a plurality of apertures therethrough. A jack at least comprising a shaft having a portion passes through the aperture and contacts a lower support means. The system includes a means for connecting the slab to the shaft. The connection means incorporates at least one supporting member connecting the slab to the shaft. Each supporting member passes through another said aperture and engages the slab. Also included is a means for effecting longitudinal travel of said supporting means along said shaft, resulting in the raising or lowering of said slab. Position sensors are associated with each jack and the system includes a means for communicating and controlling between each jack and one or more main controllers. There is also provided a jack for lifting a concrete slab which includes a shaft and ball screw, a drive assembly, a hanger assembly, a support device. The drive assembly drives the ball screw to raise the shaft with respect to the hanger assembly such that the jack has climbed the support device supports the shaft to prevent toppling and provide stability.

A braking device for a hydraulic motor vehicle braking system having an electromechanically driven booster stage and a ball screw drive. In order to provide a braking device which is of particularly compact, cost-effective and weight-saving construction and has short pedal strokes, and an easily adjustable pedal characteristic curve, at the same time enabling effective direct action in case of failure of the booster stage and comfortable haptic feedback at the pedal during normal operation, the actuating force from a piston rod is introduced into the spindle, wherein the piston rod can be moved axially to a limited extent relative to the spindle and a spring element is inserted in the flow of force of the actuating force between the piston rod and the spindle, which spring is compressed axially when the actuating force is introduced.

The invention relates to the fields of machining and manufacturing and particularly relates to an automatic clearing device for drill bit winding chips and an operation control method of the automatic clearing device. The automatic clearing device comprises a drill rod box, a tool, a chip scraper, a feeding sliding table and an air cylinder, wherein the drill rod box is mounted at the bottom side of the front of the device and is provided with the tool; the feeding sliding table is provided with a ball screw driving the drill rod box to make cutting and feeding motion; an upper fixed plate and a lower fixed plate are arranged above the feeding sliding table, the air cylinder is mounted between the upper fixed plate and the lower fixed plate; and the tail end of a telescopic rod of the air cylinder is provided with the chip scraper. The device is of a rapid chip removal structure designed for solving the problem of drill bit winding chips generated during efficient machining of a numerical control drilling machine, the chip scraper at the upper end of a drill bit is driven by the air cylinder with double functions so as to rapidly move to the root of the drill bit, a servo feeding system of a machine tool drives the drill bit to rapidly retreat, and iron chips wound on the drill bit are rapidly scrapped by using the chip scraper. A numerical control system controls a pneumatic system to drive the air cylinder with double functions to finish all actions of chip scrapping, so that the automation degree is high.

Electronically controlled linear pump drive actuator for operating a dispensing pump comprising: - a servo motor unit that has: - a stator with a central hollow cavity; - a rotor extending coaxially in the hollow cavity of the stator with a front portion that has a central bore open at the front end; and a rear shaft with a stepped diameter forming a rear extension of the front portion; - respective front and rear support members attached to the front and rear faces of the stator; - a support bearing in the rear support member designed to take and resist substantial axial loads; - a front bearing; and - a position sensor; - a ball screw drive mechanism with a ball screw nut and a ball screw shaft, the ball screw nut is arranged in and attached to the rotor; - a hollow cylinder attached to a front end of the front support member that extends in forward direction; - an actuator member guided for axial movement in the hollow cylinder and has a central rear part fixed to a front end section of the ball screw shaft, and a hollow front part; - a pump plunger adaptor fixed in the hollow front part of the actuator member for releasable attachment of a plunger element of the dispensing pump.