77 results about "Ball spline" patented technology

The invention discloses a reverse type annular tooth groove planetary roller screw which comprises a nut, a screw rod, a plurality of rollers and a retainer, a multi-head internal thread is arranged in the nut, the rollers and the screw rod are both of an annular tooth groove structure without a helix angle, and the annular tooth grooves of the rollers are meshed with the internal thread of the nut and the annular tooth grooves of the screw rod respectively; first gears are machined at the two ends of the annular tooth groove of the lead screw, second gears are machined at the two ends of the annular tooth groove of the roller, and the first gears are meshed with the multiple second gears at the same time. The retainer is of an integral flexible retainer structure, and the pin rollers have the self-adaptive capacity in multiple directions in the circumferential direction and the radial direction through the retainer. And an arc-shaped roller path is designed on the screw rod and is matched with the ball spline housing to play a linear rolling guiding and rotation stopping role on the screw rod. The reverse lead screw has the advantages of being large in transmission ratio, compact in structure, easy to machine and assemble, low in cost, good in self-adaptive performance, high in positioning precision, good in reliability and the like.

The utility model provides a gear transmission device, which belongs to the technical field of mechanical transmission and comprises a gear box body, a driving transmission mechanism and a driven transmission mechanism. A driving bearing seat and a driven bearing seat are arranged in the gear box body; the driving transmission mechanism comprises a driving shaft which is horizontally mounted on a driving bearing seat through a driving bearing and a driving gear which sleeves the periphery of the driving shaft; the shaft end of the driving shaft is arranged outside the gear box body and is connected with a prime motor; the driven transmission mechanism comprises a driven gear meshed with the driving gear, a driven hollow shaft arranged in the driven gear in a penetrating mode, a ball spline sleeve arranged in the driven hollow shaft and a spline shaft arranged in the ball spline sleeve in a penetrating mode. By means of the gear box, the problems that in the prior art, a gear box can only transmit torque, does not have the axial telescopic function, needs to be combined with other mechanisms to achieve axial movement, is large in occupied space, increases structural complexity and the like can be solved.

The utility model discloses a slidable impact-resistant starlike sleeve universal joint assembly. The driving shaft assembly mainly solves the problem that a traditional driving shaft assembly is limited in sliding stroke and cannot meet the requirement for large sliding amount. The first channel (42) is arranged on the inner wall of the mounting groove; the second channel is formed in the circumferential outer wall of the intermediate shaft; the retainer (43) is arranged between the mounting groove and the intermediate shaft; and the rolling element (44) is arranged on the retainer and is matched with the first channel and the second channel. According to the slidable impact-resistant starlike sleeve universal joint assembly, the starlike sleeve is of a ball spline structure, torque transmission is guaranteed, meanwhile, the slippage function is achieved, power transmission is even, efficiency is high, and carrying is stable and safe.

A ball spline device includes a spline shaft, the outer side wall provided with raceway grooves extending in the axial direction, each raceway groove comprising, a first groove section and a second groove section, and the width of the second groove section being greater than that of the first groove section; a spline nut coaxially fitted over the spline shaft; and first rolling bodies. When the spline nut is located at a first position, the first rolling bodies are located in the first groove sections and in constraint fit with the first groove sections; and when the spline nut is located at a second position, the first rolling bodies are located in the second groove sections, such that the spline nut and the spline shaft have a preset movement amount in the circumferential direction. Further provided are an automated guided vehicle and a stereoscopic warehouse system.

The utility model provides an alternating control mechanism for a ground knife and a handcart of an electric cabinet. The alternating control mechanism comprises a ball spline shaft, a ground knife spline shaft, a handcart assembly, a ground knife assembly and a handcart head, the motor reducer is connected with the ball spline shaft through a synchronous belt structure and controls the ball spline shaft to stretch; the driven gear inner ring sleeves the outer edge of the ball spline shaft and rotates along with the ball spline shaft; one end of the ball spline shaft is fixedly connected with a handcart head, and the other end of the ball spline shaft is provided with a second connecting seat which is fixed on a linear sliding block of the grounding knife-switch assembly; the handcart assembly stretches out and draws back along the sliding mechanism along with the ground knife spline shaft through the telescopic support. The outer edge of the ground knife spline shaft is sleeved with a driving gear through a positioning flange, and the driving gear and the driven gear are in meshing transmission through a transition gear. Under the condition that the appearance of the cabinet body is not changed and the original manual operation service is not interfered, the operation service of the robot on the switch cabinet is realized, the use of human resources is reduced, and the working efficiency is improved.

A perforated plastic shoe cover winding and packaging machine, comprising a frame and a large winding plate connected with the frame. A large hole is formed at the center of the large winding plate, an outer edge rotor is rotationally connected at the large hole, a planetary carrier is arranged on the outer edge rotor, planetary traction driven rollers are respectively arranged on the two sides of the large winding plate, a planetary support shaft is arranged at the center of the outer edge rotor, the tail end of the planetary support shaft is rotationally connected to the frame, ball spline lifting / lowering and rotating mechanisms are symmetrically mounted on the two sides of the outer edge rotor, each ball spline lifting / lowering and rotating mechanism comprises a ball spline lead screw, and the end part of the ball spline lead screw passes through the outer edge rotor and is connected to a fork-shaped winding shaft. The perforated plastic shoe cover winding and packaging machine not only has high efficiency and good stability in shoe cover winding, but also has a high degree of automation, so that manual participation is less in the shoe cover processing process, thereby reducing labor intensity, and further improving shoe cover packaging efficiency.

The utility model provides a ball spline structure which comprises a spline shaft provided with a plurality of ball grooves, an outer cylinder arranged on the spline shaft in a sliding and sleeving mode and an end cover located at one end of the outer cylinder, the outer wall of the side, away from the end cover, of the outer cylinder protrudes to form an installation portion, and first ball grooves corresponding to the ball grooves are formed in the inner wall of the outer cylinder. A second ball groove communicated with the first ball groove is formed in the mounting part, a third ball groove communicated with the first ball groove is formed in the end cover, and the first ball groove, the second ball groove and the third ball groove are matched to form a ball channel used for containing balls; an annular oil cavity is formed in the mounting part, and an elastic lubricating assembly is arranged in the oil cavity. The elastic lubricating assembly automatically adjusts the supply amount of lubricating oil according to the motion state and the lubricating requirement of the balls, and it is guaranteed that the optimal lubricating effect can be kept under different working conditions.

This invention provides a polyurethane test piece production apparatus, including a casting device and a post-curing device. The casting device includes a first cavity, a second cavity, a front fixing plate, a rear fixing plate, and a base plate. The front and rear fixing plates are detachably mounted on the base plate, and a plurality of first and second cavities are alternately installed between the front and rear fixing plates via ball-spline shafts. The post-curing device includes a receiving box and a clamping frame. This invention also provides a method for preparing polyurethane test pieces using this polyurethane test piece production apparatus. The polyurethane test piece production apparatus provided by this invention can simultaneously produce test pieces of multiple specifications, improving product reliability and work efficiency. It can also perform multi-layer curing on test pieces of multiple specifications to determine the tensile strength and tear strength of different parts of the polyurethane layer in the thickness direction, thereby guiding the design of NDI-type polyurethane rollers to obtain the optimal design scheme.

This application relates to a ball spline shaft without a ball retainer. A shaft assembly for transmitting torque in a transmission system is provided. The shaft assembly includes an outer shaft member extending along an axis and including an inner surface defining a bore and a plurality of outer recesses at least partially defining the bore. An inner shaft member extends along the axis and includes an outer surface defining a plurality of inner recesses or at least one of the plurality of inner recesses aligned with the outer recesses. At least one rolling element is positioned between the outer recesses and the inner recesses or between the outer recesses and the inner recesses. At least one of the outer surface of the inner shaft member or the inner surface of the outer shaft member is configured to axially retain at least one rolling element, and the shaft assembly does not include a ball retainer.

The invention provides an immersed tunnel gravel foundation bed sludge property in-situ monitoring device, which belongs to the field of environment monitoring equipment and comprises a driving unit, a decoupling speed regulation unit and a monitoring acquisition unit. The driving unit comprises a ball spline screw assembly and a driving motor, and the ball spline screw assembly comprises a spline shaft, a ball spline nut and a ball nut. The decoupling speed regulation unit comprises a shell, an input shaft and an output shaft, an input regulation assembly is arranged on the input shaft, an output regulation assembly is arranged on the output shaft, and the top end of the input shaft is connected with the spline shaft. The monitoring and collecting unit comprises a collecting cover and a variable stirring rotor, the collecting cover is arranged at the bottom of the shell, and the variable stirring rotor is arranged in the collecting cover and connected with the output shaft. According to the immersed tunnel gravel foundation bed sludge property in-situ monitoring device, the lifting action and the rotating action can be achieved through one driving motor, the size of the device is reduced, and operation convenience is improved.

The high-rigidity push rod linear motor comprises a guide shaft, a locking nut, a front bearing, a front end cover, a hollow shaft, a rotor, a stator, a rear bearing and a rear end cover, one end of the hollow shaft penetrates through the front bearing and then is connected with the front end cover, the other end of the hollow shaft penetrates through the rear bearing and then is connected with the rear end cover, and the rotor is installed on the outer side of the hollow shaft. The stator is installed on the outer side of the rotor, the linear motor further comprises a ball spline, and the guide shaft sequentially penetrates through the ball spline and the locking nut and then is connected with the hollow shaft. Compared with the prior art, the utility model has the advantages of high rigidity, high precision and the like.

An adaptive tool holder of a robotic arm includes: a tool shank; a hollow barrel seat, connected below the tool shank; a ball spline with an upper section, an outer convex ring and a lower section; a spring seat, disposed within the barrel seat and located on the upper section of the ball spline; an elastic element, disposed within the barrel seat, where both ends of the elastic element abut against a bottom of the tool shank and the spring seat respectively; a spring guide pin, disposed through the spring seat; a connecting post, disposed within the lower section of the ball spline, where a top of the connecting post is connected and fixed to the spring guide pin; and a friction stir welding tool inserted and fixed detachably at a bottom end of the connecting post.

The invention relates to the technical field of mechanical transmission, in particular to a self-locking positioning ball spline, a system and a method.The self-locking positioning ball spline comprises a sliding rod, a sliding sleeve, a self-locking positioning actuator, a position sensing module and a control module, and at least one load roller path extending in the axial direction is arranged on the outer circumferential surface of the sliding rod; the sliding sleeve is arranged on the sliding rod, a ball circulation loop corresponding to the load raceway is arranged on the inner circumferential surface of the sliding sleeve, and a plurality of balls are arranged in the ball circulation loop, so that the sliding sleeve can slide in the axial direction of the sliding rod at low friction; the self-locking positioning actuator is arranged on the sliding sleeve, and the self-locking positioning actuator is configured to receive a locking instruction and apply mechanical acting force to the sliding rod, so that static friction force is generated to prevent relative movement between the sliding sleeve and the sliding rod, and self-locking positioning is achieved; the device is more stable and reliable in the occasions of vertical installation, bearing of non-directional external force or intermittent work, and potential safety hazards and precision loss caused by sliding or displacement are avoided.

This utility model discloses a flower-tying machine belonging to the technical field of flower-tying machines. It includes a machine head, a winding box at one end of the bottom of the outer casing of the machine head, a photoelectric positioning plate and a winding shaft synchronous wheel sequentially arranged on the top of the winding box, a bobbin inside the winding box, a flower-tying nozzle at the bottom of the winding box, a hook needle inside the flower-tying nozzle, a ball spline shaft at the top of the winding box, a needle bar at the top of the ball spline shaft, a first photoelectric switch on the outside of the ball spline shaft, a lead screw synchronous wheel on one side of the top of the machine casing, and a lead screw at the bottom of the lead screw synchronous wheel. By adopting microcomputer control, the machine operates intelligently and conveniently, eliminating the need for frequent adjustments by operators, thus improving production efficiency. The mechanical movement uses a lead screw and a ball spline shaft, which efficiently transmits power and reduces operating noise. The main body of the machine is compact, significantly reducing its size and weight, and the internal parts are tightly fitted, greatly reducing the failure rate.

The invention discloses a high-bearing secondary jacking mechanism, which relates to the technical field of motor production, and comprises a jacking positioning assembly and a pressure head assembly, the jacking positioning assembly comprises a movable plate, positioning sliding rods are fixedly connected to the four corners of the top of the movable plate, a tray supporting plate is fixedly connected to the tops of the four positioning sliding rods, and a first base plate is slidably connected to the outer sides of the four positioning sliding rods. The invention discloses a high-bearing-capacity two-stage jacking mechanism. A two-stage positioning mechanism of tray jacking and machine shell jacking is adopted, a tray jacking air cylinder drives a first base plate to slide and ascend along a positioning sliding rod, and preliminary tray positioning is completed; and then the casing jacking cylinder pushes the casing positioning block to perform secondary jacking through the guide of a jacking rod and a ball spline, and a clamping structure of a locking block and a locking groove of the height positioning cylinder is combined, so that the casing positioning precision reaches a relatively high level, the problem of accumulative errors caused by single action in a traditional positioning mode is effectively solved, and the positioning precision of the casing is improved. And a high-precision precondition is provided for press fitting.

This invention relates to the field of braised food processing technology, and more particularly to a lifting-type braising device for braised food processing, comprising a movable support base, a support frame, a braising barrel, and a connecting plate. The support frame is fixedly installed on the movable support base, and the connecting plate is fixedly installed on the upper part of the support frame. A motor is fixedly installed on one side of the connecting plate, and a drive wheel is fixedly connected to the output end of the motor. The end of the connecting plate away from the motor is rotatably connected to a ball spline via a bearing. In this invention, by designing a lifting-type braising device for braised food processing, the automatic rotation of the inner filter cylinder during the lifting process is achieved through the linkage design of the motor, toothed belt, gear set, and ball spline. The inner cylinder rotates slowly in the braising broth, replacing the traditional manual turning. This not only makes the food heated more evenly but also completely avoids the breakage and damage of the food caused by manual stirring, maintaining the appearance and quality of the braised food.

The utility model discloses an assembling platform of a wind power gear box, which belongs to the technical field of wind power gear box processing equipment and comprises a base, a fixing groove is arranged in the center of the base, support columns are arranged at two ends of the base, a limit rod and a lead screw are arranged between the support columns, the lead screw penetrates through the support columns and is connected with a moving motor, and the outer walls of the limit rod and the lead screw are connected with a moving disc. A hoisting assembly is arranged at the bottom of the movable disc, and a shaking restraining assembly is arranged in the movable disc. According to the gear lifting appliance, the lifting assembly is arranged, when a gear provided with a gear shaft is lifted, the gear shaft can penetrate through the through hole formed in the center of the lifting scaffold, so that the lifting appliance does not need to be replaced when the gear is lifted, and the ball spline is driven by the lifting splined hub to vertically descend to a proper position through the shake suppression assembly; the clamping splined hub drives the ball spline to rotate synchronously, the ball spline drives the restraining clamping plate to rotate synchronously, the restraining clamping plate clamps the hanging scaffold from the periphery, and therefore shaking of the hanging scaffold is restrained before assembling.

The utility model provides a ball spline pair assembly. The ball spline pair assembly comprises a spline shaft, a nut, a retainer, a lining and a limiting structure. A ball groove is formed in the surface of the spline shaft, multiple sets of ball channels are arranged in the nut and divided into load channels and non-load channels, circulating rolling of balls is achieved, friction loss is reduced, and transmission efficiency is improved. Five groups of ball channels are arranged in the retainer, so that the bearing capacity and the rigidity are enhanced; the lining is located between the shell and the retainer and provides buffering and high-precision guiding. The limiting plate adopts a C-shaped buckle structure and is matched with annular grooves and pin holes in the two ends of the shell, so that stable assembly of the assembly is ensured. And the gasket is arranged between the C-shaped buckle and the lining, so that the sealing performance is improved, and pollution invasion is prevented. The assembly is compact in structure, stable in operation, high in bearing capacity and suitable for high-precision transmission occasions such as numerical control machine tools and industrial robots, and has good application prospects.

An apparatus for aligning a bioprocessing drive head includes: a rotary and sliding bearing assembly configured to operatively connect a drive motor to a rotatable shaft; and a drive head operatively connected to the rotatable shaft, configured to rotate an impeller within a bioprocessing container. The apparatus further includes a linear motion mechanism operatively connected to a rotary ball spline mechanism and / or the rotatable shaft. The linear motion mechanism is configured to linearly move the drive head via the rotatable shaft to operatively contact the impeller, without linearly moving the drive motor.

The invention discloses a device for machining an elliptical inner wall of a pump body by using a double-tool-rest vertical lathe, which comprises a ball spline shaft assembly, a live center assembly and a turning tool fixing telescopic assembly, and the ball spline shaft assembly comprises a vertically arranged ball spline shaft body, a first ball spline sleeve and an elliptical cam; the first ball spline sleeve is arranged on the ball spline shaft body in a sleeving mode, the oval cam is fixed to the first ball spline sleeve, the lower end of the ball spline shaft body is connected with a workbench of the vertical lathe through the connecting mechanism, and the live center assembly is connected with a left tool rest of the vertical lathe and abuts against the ball spline shaft body from top to bottom. The turning tool fixing telescopic assembly comprises a sliding bottom plate, a support, a tool apron and a turning tool body and can vertically ascend and descend along with the right tool rest, when the oval cam rotates, the sliding bottom plate can telescopically move in the left-right direction, and a pump body to be machined is fixed to the center of the workbench. The problem that the elliptical inner wall of the pump body cannot be cut in the prior art is solved, and the device is low in cost and good in machining precision.

The utility model discloses a miniature integrated rotating device, which relates to the technical field of integrated rotating devices and comprises a ball shaft, a ball spline sleeve is connected to the outer side of the ball shaft, an outer bearing sleeve is connected to the outer side of the ball spline sleeve, and a flange is fixed at the top end of the outer bearing sleeve. A plurality of sets of first balls are arranged between the ball shaft and the ball spline housing, and a synchronizing wheel is arranged at the top end of the ball spline housing. When the ball spline housing moves on the ball shaft, the multiple groups of first balls arranged on the surface, in contact with the spline housing, of the ball spline housing slide in the bearing ball channel in the outer bearing housing, so that the outer bearing housing and the flange integrally formed at the bottom end of the outer bearing housing rotate, and the bearing housing is prevented from rotating; and the space for externally mounting standard bearings and flanges is greatly reduced, the weight of the whole set of product is reduced, the load of the product is reduced, and the service life is prolonged.

The invention discloses a tandem type coaxial electric injection unit of a multi-component injection molding machine, which comprises a screw rod used for plasticizing and injecting raw materials; the ball spline lead screw is coaxially connected with the screw rod and can move synchronously with the screw rod; the ejection hollow motor sleeves the front end, close to the screw rod, of the ball spline lead screw; the rotary hollow motor sleeves the rear end, away from the screw, of the ball spline lead screw; the load cell sensor is arranged at the front end, close to the screw rod, of the ejection hollow motor, of the ball spline lead screw and used for detecting the back pressure borne by the screw rod; the control system is connected with the load cell sensor, the ejection hollow motor and the rotary hollow motor; the ejection hollow motor and the rotary hollow motor are arranged on the same axis in series. The two hollow motors (the injection hollow motor and the rotary hollow motor) which are coaxially connected in series are matched with the ball spline lead screw, and through cooperation and differential control of the double motors, the extremely compact structure and precise function control of the injection unit are achieved.

The utility model discloses a horizontal four-axis industrial robot which comprises a base, a large arm, a small arm, a first motor, a second motor, a third motor, a fourth motor and a ball spline lead screw pair. One end of the big arm is movably connected with the base, and the other end is movably connected with the small arm; the ball spline lead screw pair is arranged at the end, away from the large arm, of the small arm. The first motor is arranged in the base, connected with the big arm and used for driving the big arm to rotate relative to the base; the second motor is arranged in the large arm, connected with the small arm and used for driving the small arm to rotate relative to the large arm; the third motor is arranged in the big arm, is connected with the ball spline lead screw pair and is used for driving the ball spline lead screw pair to realize lifting motion; the fourth motor is arranged in the small arm and connected with the third speed reducing mechanism, and the third speed reducing mechanism is connected with the ball spline lead screw pair. The robot with the structure is small in rotational inertia and stable in operation.

The present invention provides an Xθ stage device in which an electric motor that drives the X-axis actuator and an electric motor that drives the θ-axis actuator are fixedly positioned outside the vacuum processing chamber. [Solution] An Xθ stage device 100 applicable to a vacuum container for moving a workpiece placed on a sample stage 30 inside a vacuum container, comprising: an X-axis actuator 2 for moving the workpiece in the X-axis direction; a θ-axis turntable gearhead 3 for rotating the workpiece in the θ-axis direction on a slider of the X-axis actuator; an X-axis electric motor 29 provided outside the vacuum container, connected to the screw shaft of the X-axis actuator, and driving the X-axis actuator; a θ-axis electric motor 39 provided outside the vacuum container, connected to a ball spline shaft, and applying rotational torque to the ball spline shaft; a drive force transmission unit slidably provided on the ball spline shaft, converting the rotational torque transmitted from the ball spline shaft into rotational torque around the θ-axis, and transmitting the rotational torque to the θ-axis turntable gearhead; and a housing constituting the drive force transmission unit, fixed to the end of the X-axis actuator, and along the ball spline shaft, causing the θ-axis turntable gearhead to follow the movement of the X-axis actuator in the X-axis direction.

The utility model discloses an integrated sucking and clamping mechanism for a ZR assembly of clamping and inserting equipment, which relates to the technical field of guide-shaped electronic component inserting operation and comprises a ZR shaft, a vent hole is formed in the center of the interior of the ZR shaft, and a clamping jaw suction nozzle mechanism is connected to the bottom of a quick connecting assembly. Suction nozzle adsorption and clamping jaw clamping are innovatively combined, the problem that an existing single mode is prone to damage special-shaped fragile elements is solved, the clamping success rate and reliability are improved, the product quality is guaranteed, a ZR axis vent hole enables negative pressure of the suction nozzle to be stably transmitted through a connecting cylinder, a vent piece connecting thread guarantees powerful adsorption, and the driving piston rod cooperates with a rotating hole and a driving groove to accurately open and close the clamping jaw. A buffer spring buffers impact, a ball spline of a ZR shaft, a reciprocating ball channel, a bearing, a belt pulley and an external thread cooperate ingeniously, a ball structure keeps smooth movement and bears radial force, the bearing reduces friction to assist movement, the belt pulley and the external thread accurately change movement to drive displacement, efficiency and precision are improved, and great advantages and prospects are achieved in electronic element plug-in operation.

The application relates to a motor insulation paper flattening device and belongs to the technical field of new energy motor processing. The motor insulation paper flattening device comprises a workbench, a dividing mechanism is arranged at the middle position of the workbench, and flattening mechanisms are symmetrically arranged at the two sides of the dividing mechanism. The motor insulation paper flattening device realizes a full-automatic flattening process of motor stator insulation paper, saves a large amount of manpower, improves processing efficiency, replaces traditional linear bearings with ball spline, can bear a large radial force to realize dividing rotation on one hand, and can move axially up and down on the other hand, saves mechanical installation space, after the movable flattening tooth and the fixed flattening tooth reach the best flattening pressing force, the flattening retreat cylinder is unloaded to realize the buffer retreat of the movable flattening tooth and the fixed flattening tooth, and the damage of the insulation paper to be flattened caused by excessive flattening pressure is prevented. In addition, the flattening top tooth can be quickly disassembled and replaced, can adapt to the flattening of insulation paper of different types of motors and electronic devices, and is widely applied.

The utility model discloses a raw material mixing reaction kettle for producing a rust transforming agent, which relates to the technical field of reaction kettles, and adopts the technical scheme that the raw material mixing reaction kettle comprises a reaction kettle body, and a mixing mechanism is arranged in the reaction kettle body; the mixing mechanism comprises a rotating shaft, the bottom of the rotating shaft is fixedly provided with a spline shaft, the spline shaft is sleeved with a ball spline pair, the ball spline pair is sleeved with a spline sleeve, one side of the spline sleeve is fixedly provided with a connecting roller, and the spline sleeve is sleeved with a fixed sleeve; the raw material mixing reaction kettle for rust transforming agent production has the beneficial effects that the stirring rod and the stirring blades can longitudinally move while rotating, so that the stirring position is adjusted, and rust transforming agent raw materials at different depths in the reaction kettle can be stirred and mixed; the problem that the stirring shaft of the existing reaction kettle can only rotate in a fixed area, so that the bottom area of the reaction kettle is non-uniformly stirred is effectively solved, and the mixing effect is improved.

The utility model provides a kind of material transfer mechanism and packaging box conveying system, it is related to material conveying technical field, including mounting plate, lifting rotary assembly and pick-and-place assembly;Lifting rotary assembly includes ball screw, lifting drive part and rotary drive part;Ball screw includes screw rod and ball nut and spline nut that are spacedly sleeved on screw rod;Pick-and-place assembly is installed on the lower end of screw rod to pick up or release material;Ball nut and spline nut are rotatably installed on mounting plate by bearing respectively;Lifting drive part and rotary drive part are fixed on mounting plate;On the upside of mounting plate, lifting drive part is connected with ball nut transmission to drive ball nut rotation by lifting transmission wheel group;On the downside of mounting plate, rotary drive part is connected with spline nut transmission to drive spline nut rotation by rotary transmission wheel group.The utility model alleviates the problem that material lifting and rotating function implementation mode are complex, response speed is slow and space is large in prior art.

A constant velocity joint configured to be coupled to an interconnecting shaft of a driveshaft includes: an outer race forming a plurality of outer ball tracks; an inner race forming a plurality of inner ball tracks corresponding to the plurality of the outer ball tracks; a ball cage interposed between the outer race and the inner race and forming a plurality of windows; and a plurality of torque transmitting balls respectively disposed in spaces formed by the pairs of the outer and inner ball tracks in a state of being respectively housed in the windows. The inner race is coupled to the interconnecting shaft via a ball spline coupling structure to implement a length displacement function through relative axial displacement along an axial direction of the interconnecting shaft. The outer race comprises an inner circumferential surface having a shape of a spherical surface with a first diameter, and a diagonal length of the inner race is smaller than the first diameter.

A constant velocity joint configured to be coupled to an interconnecting shaft includes: an outer race forming a plurality of outer ball tracks; an inner race forming a plurality of inner ball tracks; a ball cage interposed between the outer race and the inner race and forming a plurality of windows; and a plurality of torque transmitting balls. The outer race and the inner race are configured to implement an angular articulation function that allows for relative angular displacement therebetween, and the inner race is coupled to the interconnecting shaft via a ball spline coupling structure to implement a length displacement function. The ball spline coupling structure includes: an outer spline groove; an inner spline groove; a sleeve member interposed between the inner race and the interconnecting shaft; and a plurality of spline balls, with said spline balls being accommodated within a sleeve window formed on the sleeve member.