76 results about "Headframe" patented technology

The utility model relates to the technical field of bending machines, in particular to copper-clad steel bending equipment which comprises a rack, a rotary driving assembly, a sliding frame, a lifting driving assembly and an angle measuring assembly. A headstock is arranged on the machine frame and coaxially connected with a rotating shaft, and the rotating shaft is connected with a connecting rod which is rotationally connected with a supporting roller. The rotary driving assembly is connected with the headstock and the rotating shaft, so that the supporting point of the supporting roller and the supporting point of the headstock are kept at the same height through the rotary driving assembly when the equipment is vacant; the sliding frame is located above the head frame and is in sliding connection with the rack, and two pushing heads rotationally connected with the sliding frame are symmetrically arranged on the sliding frame; the lifting driving assembly is connected with the rack and drives the sliding frame to ascend and descend. The angle measuring assembly comprises an angle sensor, and a sliding sheet of the angle sensor is driven to slide through a connecting rod, so that the bending angle of the copper-clad steel is automatically measured. The copper-clad steel bending machine automatically bends copper-clad steel to a set angle, can be suitable for bending various types of materials, and is simple in structure and convenient to operate.

The present invention discloses a magnetically assembled golf club bag head frame including a head frame body and a top annular piece. A clamping groove is provided on a side wall of the head frame body. A clamping joint is provided on a side wall of the top annular piece. The clamping groove is provided with a magnet groove in which a first magnet is provided. The clamping joint is provided with a magnet groove in which a second magnet is provided. During transportation, the golf club bag is a semi-finished product, a bag body is connected to the top annular piece, and the top annular piece and the head frame body are in a separated state.

This utility model provides a headstock for an external cylindrical grinding machine, including a housing and a top cover, with cavities inside the housing and top cover. A second through hole and a first through hole are transversely arranged on the housing, penetrating the cavity. A headstock spindle, rotatably connected, passes through the second and first through holes, with the head of the headstock spindle positioned near the first through hole. A front bearing sleeve is installed in the first through hole, and a No. 1 bearing is installed between the front bearing sleeve and the headstock spindle. The headstock spindle is interference-fitted and fixedly installed in the inner ring of the No. 1 bearing. A rear bearing sleeve is installed in the second through hole, and a No. 2 bearing is installed between the rear bearing sleeve and the headstock spindle. The headstock spindle is interference-fitted and fixedly installed in the inner ring of the No. 2 bearing. This design can increase the axial force on small workpieces by several times, enabling the clamping and smooth rotation of large workpieces.

An auxiliary head frame used in cooperation with a try-on frame comprises a frame body and a head band which are used for cooperating with each other to form an annular structure so that the auxiliary head frame can be conveniently worn on the head of a human body, inserting grooves used for being matched with the two ends of the head band are formed in the two sides of the frame body, and adjusting holes are further formed in the positions, at the inserting grooves, of the frame body. Adjusting gears are embedded in the adjusting holes, strip-shaped holes are formed in the two sides of the head band, and adjusting teeth used for being matched with the adjusting gears to adjust the tightness of the head band are arranged on the inner hole walls of the strip-shaped holes. An open hole is further formed in the middle of the frame body, a rack which is vertically arranged is inserted into the open hole, a hook which is used for supporting and matching the trial frame is hinged to the bottom of the rack, and a pinion which is used for being matched with the rack to adjust the height of the hook is installed on the frame body at the open hole. Part of weight of the try-on frame is transferred to the head, so that pressure of the lenses and the try-on frame on the patient during fitting can be reduced, and discomfort of the patient during try-on is reduced.

The utility model belongs to the technical field of forklift assembly, and particularly discloses a front axle plate front end positioning inner supporting mechanism which comprises a clamping device, the clamping device comprises a set of positioning headstock used for clamping the front end of a left front axle plate and the front end of a right front axle plate, the inner supporting mechanism further comprises an inner supporting device, and the inner supporting device comprises a connecting support fixedly connected with the clamping device. An inner supporting lead screw is rotationally connected into the connecting support, inner supporting pieces are in threaded connection with the two ends of the inner supporting lead screw respectively, the inner supporting lead screw is rotated to enable the two inner supporting pieces to move face to face or back to back, and the inner supporting pieces located at the same end and the positioning head frame conduct inner and outer clamping positioning on the front end of a front axle plate together. The positioning headstock on the clamping device is located on the outer sides of the front ends of the left front axle plate and the right front axle plate for clamping, and the inner supporting piece of the inner supporting device is located on the inner sides of the front ends of the left front axle plate and the right front axle plate, so that the outer side and the inner side of the front axle plate are clamped and positioned at the same time, deformation of the front axle plate during welding is prevented, correction after welding is avoided, and labor intensity is reduced.

The utility model discloses a headstock suitable for a belt conveyor with a limited length of a roadway, which is positioned in the roadway with the limited length and can realize coal unloading under the condition that an unloading arm is not arranged. The machine head frame comprises a heightening frame, a machine head left vertical plate, a machine head right vertical plate, a driving roller and a turnabout roller. The mounting position of the turnabout drum is close to the driving drum and lower than that of the driving drum, and the turnabout drum is used for upwards changing the wrap angle of the belt; wherein the heightening frame is used for raising the horizontal position of the driving roller, so that a coal unloading point of the driving roller is overlapped with a coal falling point of a belt conveyor of a next roadway; according to the utility model, the unloading arm is completely removed, so that the length of the roadway is matched with the conveying length of the belt conveyor, and the unloading point of the whole device is lifted by using the heightening frame, so that the unloading point of the whole device is overlapped with the coal falling point of the next roadway, and the high-position coal unloading is realized.

The application relates to the field of half shaft machining, in particular to an automobile half shaft grinding device which comprises a track assembly and a grinding assembly, a fixed headstock and a left and right sliding tailstock are arranged on the track assembly, a center mechanism for aligning and locking the end of the half shaft is arranged on the headstock and the tailstock, an auxiliary mechanism for supporting the area of the half shaft after polishing is further arranged on the track assembly, the positioning center, the limiting center and the abutting disc are arranged in a mutually nested sliding mode, the half shaft is sequentially positioned and limited, so that the double functions of high-precision positioning and bearing grinding load which are simultaneously borne by the traditional center are separated, meanwhile, the axial thrust and the radial load generated in the grinding process are borne by the abutting disc and the limiting center; the V-shaped block is further matched to support the area of the half shaft after grinding with high precision, so that stable positioning in the whole grinding process of the half shaft is realized, and long-time high-precision grinding operation can be carried out.

The utility model discloses a grinding wheel correction device for application in cylindrical grinding machine relates to cylindrical grinding machine technical field, including the body, the top fixedly connected with workstation of body, the workstation top fixedly connected with guide rail, the outer surface sliding connection of guide rail has headstock, the outer surface sliding connection of one end of guide rail away from headstock has tailstock, and the outer surface of one side close to headstock of tailstock is installed with correction mechanism. The utility model discloses through the pressure ring and the boss, fixes the grinding wheel disc between the cover shell and the baffle, and the positioning column can greatly reduce the time needed to center during installation, can also reduce eccentric situation, guarantees the machining accuracy, and the extrusion elastic ring, the buffer ring and the cushion block can all produce deformation when installing the grinding wheel disc, to reduce the gap on each structure connection, and the key groove on the transmission shaft can prevent the grinding wheel disc from slipping when rotating, so that the surface precision of workpiece is affected.

The application discloses a workpiece top holding force automatic adjustment method and relates to the technical field of mechanical manufacturing. L Data preparation: calculating the top holding force F L ; tailstock position adjustment: through the numerical control system, the servo motor is powered on to drive the tailstock to move forward to the target grinding station; feeding: through the mechanical arm, the workpiece to be processed is placed above the station; centering: through the servo hydraulic drive mechanism, the tailstock center is driven into the tailstock hole of the workpiece; grinding: the headstock drives the workpiece to grind through the workpiece automatic driving device, and the top holding force F L is adjusted according to different grinding positions of the workpiece; and discharging. The application can automatically adjust the top holding force of the workpiece and can adapt to different sizes and weight specifications and different machining precision requirements.

A lifting head assembly capable of adjusting the direction comprises a lifting head frame, the lifting head frame is in running fit with a bearing cross beam, the bearing cross beam is connected with a connecting plate, the connecting plate is in running fit with a pulley pin shaft, and the pulley pin shaft is in running fit with a pulley. The lifting head frame comprises an upper lifting rod, a lower U-shaped frame and an oil cylinder installation supporting sleeve, the top of the lower U-shaped frame is connected with the upper lifting rod, and the side portion of the lower U-shaped frame is connected with the oil cylinder installation supporting sleeve. Z-axis active angle adjustment is achieved through running fit of the lifting head frame and the bearing cross beam, multi-degree-of-freedom automatic centering is achieved in combination with guide fit of four-edge grooves of the lower U-shaped frame and four-edge bosses of the lifting lugs, and the lifting device adapts to complex working conditions such as inclined gate grooves.

The present invention discloses a buckle-assembled type golf club bag, including: a head frame, a chassis, a bag body that connects the head frame and the chassis, and a plurality of support rods located between the head frame and the chassis and configured to stretch the bag body, a top portion of the bag body is connected to a top ring member, a bottom portion of the bag body is connected to a bottom ring member, the top ring member is clamped to the head frame, and the bottom ring member is clamped to the chassis. During transportation, the golf club bag is a semi-finished product, and the bag body is connected to the top ring member and the bottom ring member, while the top ring member and the head frame, as well as the bottom ring member and the chassis, are separated.

This utility model relates to the field of grinding machine technology and discloses a grinding machine for cover plate forming grinding. The machine includes a machine tool with two electrically driven translational slides fixedly mounted on it. A slide base is slidably connected to the first electrically driven translational slide. A mounting bracket and a slide rail are fixedly mounted at the end of the slide base away from the first electrically driven translational slide. A headstock and a limiting seat are fixedly mounted on the slide rail. An internal support fixture is fixedly mounted at the output end of the headstock. A roller motor is fixedly mounted on the limiting seat. A grinding wheel is fixedly mounted on the output shaft end of the roller motor. This grinding machine for cover plate forming grinding features a horizontal alignment design between the grinding wheel and the internal support fixture, ensuring the coaxiality of the cover plate workpiece during grinding. Furthermore, the T-shaped distribution of the first and second electrically driven translational slides forms an XY-axis linkage structure, enabling the grinding wheel to grind the three-dimensional contour of the cover plate edge, thus improving its practicality.

The utility model belongs to the technical field of welding machine manufacturing, and particularly relates to a welding machine tailstock convenient to move, which comprises a box seat, a center seat, a center and an advance and retreat adjusting mechanism, the box seat is movably connected with a track, the center seat is arranged at the top of the box seat, and the front end of the center seat is connected with the center. A fork head frame is arranged in the wheel seat, a spring is arranged between the top of the fork head frame and the T-shaped bolt, the bottom of the fork head frame is connected with the walking wheel through a wheel shaft, the two sides of the fork head frame are movably connected with a sliding groove in the inner side of the wheel seat, and a limiting table is arranged at the bottom of the sliding groove. The tailstock has the advantages that the wheel seat is additionally arranged on the basis of an existing tailstock, when the tailstock needs to move, only the clamping pressing plate needs to be separated from the track, the walking wheel rises under the action of the spring, the tailstock is separated from the track, at the moment, the tailstock can be manually pushed to move, the friction resistance of the walking wheel is very small, operation is convenient, and the working efficiency is improved. And the labor intensity is greatly reduced.

This utility model relates to the field of drawbridge technology, specifically a drawbridge with reduced friction, comprising: a headframe on which a drawbridge body is mounted; an installation groove is formed on the inner wall of the drawbridge body, a locking block is integrally formed on the inner wall of the installation groove, an installation strip is slidably mounted inside the installation groove, an arc groove is formed on the bottom surface of the installation strip, a locking groove is formed on the side wall of the installation strip, and installation holes are formed on the surface of the drawbridge body; a guide wheel structure is mounted on the drawbridge body, the guide wheel structure including bolts. This utility model reduces the weight of the guide wheel by creating slots inside the rotating shaft and the guide wheel disc, and further reduces the resistance of the guide wheel disc during rotation by rotatably connecting the rotating shaft to the fixed shaft via bearings. This allows the guide wheel disc to rotate quickly when the material is transmitted across its surface, reducing friction on the material and ensuring a better user experience.

The invention relates to the technical field of thread machining, in particular to a planet lead screw high-precision numerical control thread grinding machine for driving joints of a humanoid robot, which comprises a machine frame, a control system is arranged on the machine frame, a working table is slidably connected to the outer wall of the machine frame, and a headstock and a tailstock are slidably connected to two ends of the working table respectively. Through the arranged carrying mechanism, when a detection value of a second distance measuring instrument is lower than a threshold value, a control system controls an overturning motor to rotate in the forward direction, a lead screw is separated from a loading ring through an avoiding opening, meanwhile, an unloading ring rotates to the position below the lead screw, after machining is completed, the lead screw falls into the unloading ring, and during discharging, the overturning motor is controlled to rotate in the reverse direction; the discharging ring drives the machined lead screw to move to the side close to the collecting groove and slide into the collecting groove through the receding opening, meanwhile, the loading ring drives the lead screw placed in advance to complete the positioning work again, then automatic feeding and discharging are achieved, and the working efficiency is greatly improved.

This golf bag features a removable telescopic tube that allows the user to remove and attach the tube themselves, improving the bag's functionality. [Solution] The golf bag with a removable telescopic tube according to the present invention comprises a bag body 10, a head frame assembly 20, and a telescopic tube 30. The bag body 10 has a storage space 11 inside and an opening 12 at the top that communicates with the storage space 11. A plurality of brackets 13 are provided in the storage space 11, one end of each bracket 13 is fixed to the bottom of the bag body 10, and the other end extends along a direction toward the opening 12. The head frame assembly 20 has a first head frame 21, a second head frame 22, and control components 23. The telescopic tube 30 is removablely provided in the storage space 11 of the bag body 10 and is driven to move along a direction toward or away from the bag body 10.

The utility model discloses a steel bar cutting-off device which comprises a cutting-off head frame body, a sliding seat and a cutting-off tool. Two parallel track shafts are arranged on the cutting head frame body, the sliding seat is arranged on the two track shafts in a sliding manner, and the cutting tool is fixed on the sliding seat; the cut-off tool comprises a cylinder body and a piston rod connected with the cylinder body through a piston, and a blade is arranged at the front end of the piston rod; the front end of the piston rod is inclined downwards, and the cut reinforcing steel bar can smoothly fall into the material receiving groove at the preset position. The supporting mode of the cutting-off head is optimized, the impact force in the pushing process of the steel bar cutting-off head is reduced, the torque in the cutting-off pushing process is reasonably balanced, equipment runs stably, and the service life is prolonged; in addition, the front end of the piston rod is inclined downwards, so that the steel bar can fall into a preset track smoothly after being cut off, and accumulation of machining scraps and the like can be prevented.

The utility model relates to the technical field of headstock motors, in particular to a headstock motor with a damping base, which comprises a headstock motor and a damping base top plate, a stud hole is arranged on the surface of the headstock motor, a stud is fixed at the top end of the damping base top plate, the stud is movably inserted in the stud hole, and the damping base top plate is fixed on the surface of the headstock motor. A nut is mounted on the surface of the stud in a threaded connection manner; the anti-loosening device has the beneficial effects that the anti-loosening plate is pressed downwards to be completely retracted into the anti-loosening plate mounting groove, then the nut is screwed on the stud through threaded connection, after basic screwing, the nut continues to be finely adjusted in the screwing direction to enable the nut to be aligned with an inner ring of the anti-loosening plate, and then the anti-loosening plate is loosened; the anti-loosening spring pushes one end of the anti-loosening plate out of the anti-loosening plate mounting groove under the elastic effect of the anti-loosening spring, so that the nut is sleeved with one end of the anti-loosening plate to conduct circumferential limiting on the nut, the thread anti-loosening function between the nut and the stud is achieved, and the headstock motor is firmly mounted at the top end of the damping base top plate.

The utility model relates to the technical field of headstocks for dance of dragon and lion, and discloses a headstock for dance of dragon and lion with an adjustable internal space, which comprises a main body mechanism, sliding mechanisms are connected to two sides of the main body mechanism in a sliding manner, and a telescopic mechanism is arranged at the top of the main body mechanism. Through the arrangement of the first frame body and the second frame body in the main body mechanism, the stability of the device can be guaranteed through the first frame body and the second frame body, so that the stability of the device is improved, and through the arrangement of the first protection plate and the second protection plate on the two sides of the first frame body, the device can be prevented from being collided; the device is arranged in the first frame body, so that damage and danger are caused to the device and operators in the device, the reliability and safety of the device are improved, the device can be controlled through a roll shaft arranged in the first frame body, and the portability of the device is improved.

The invention provides a clamping jaw mechanism. The clamping jaw mechanism comprises a headstock, a first clamping component, a second clamping component, a split ring, a movement mechanism, a machine body and a lifting mechanism. A sliding rail is arranged on the headstock; the first clamping component is installed on the sliding rail in a sliding mode. The second clamping component is installed on the sliding rail in a sliding mode. The first clamping component and the second clamping component are matched to clamp a workpiece; a split ring is mounted at the lower end of the headstock; the movement mechanism is mounted on the headstock; the split ring drives the movement mechanism to operate; the movement mechanism enables the first clamping component and the second clamping component to be closed or opened. A notch is formed in the front portion of the machine body, and a notch gear is installed in the notch. The headstock is mounted on the notched gear; the lifting mechanism is mounted on the machine body; and the lifting mechanism is used for pushing the split ring to move.

The invention discloses a disassembly-free ball screw pair precision retentivity loading test device. The device comprises a lathe bed part, a driving mechanism, an integrated headstock, a movable workbench, two loading mechanisms, a stroke error measuring mechanism, a friction torque measuring mechanism, a contact rigidity measuring mechanism and a temperature measuring mechanism. Wherein the stroke error measuring mechanism is arranged on the lathe bed part; the friction torque measuring mechanism is arranged on the movable workbench, and the contact rigidity measuring mechanism is also arranged on the movable workbench; a zero position sensor and two mechanical limiting sensors are arranged on the side of the movable workbench. Therefore, the device integrates a loading function and intelligent online measurement, synchronous monitoring of multiple key parameters can be completed without disassembling the lead screw pair, damage to the shaft end of the lead screw and assembly errors caused in the assembling and disassembling process are effectively avoided, the test efficiency and the test data precision are remarkably improved, and the device is suitable for precision retentivity evaluation of the high-precision ball screw pair.

A belt adjusting device for a self-moving tail of a belt conveyor relates to the technical field of belt conveyor equipment and comprises two floating cylinders, an adjusting frame, a carrier roller set and two lifting cylinders. The two floating cylinders are arranged in the Y direction, and cylinder bodies of the floating cylinders are hinged to the belt conveyor self-moving machine tail frame body. The adjusting frame is located below the floating cylinder and hinged to the belt conveyor self-moving machine tail frame body, and a piston rod of the floating cylinder is hinged to the adjusting frame. The carrier roller set is arranged above the adjusting frame in the Y direction. The two lifting cylinders are arranged on the two sides of the carrier roller set in the Y direction and are vertically arranged, cylinder bodies of the lifting cylinders are installed on the adjusting frame, and piston rods of the lifting cylinders are connected with the ends of the carrier roller set. The position of the belt can be adjusted up, down, left and right, it is guaranteed that the reversed loader unloads coal smoothly, scattering is prevented, the labor intensity of workers is relieved, and the maintenance cost is reduced.

The numerical control grinding machine comprises a machining rack, a clamping assembly and a driving assembly, a mounting rail is arranged on the machining rack, a headstock and a tailstock are arranged on the mounting rail, the clamping assembly comprises a first ejector pin and a second ejector pin, and a first connecting rod is arranged on the side, close to the tailstock, of the headstock; a first connecting rod is arranged on one side of the headstock, a second connecting rod is arranged on one side of the tailstock close to the headstock, the first connecting rod and the second connecting rod are coaxially arranged, the first ejector pin is arranged on the first connecting rod, the second ejector pin is arranged on the second connecting rod, and the driving assembly is arranged on a mounting rail between the headstock and the tailstock. The driving gear is arranged on the reduction gearbox, the center axis of the driving gear is parallel to the center axis of the first connecting rod, and a driving source used for driving the driving gear to rotate is arranged on the reduction gearbox. The grinding device has the effect of improving the grinding quality of the end of the transmission shaft with the helical teeth.

The invention relates to the technical field of potato processing, and provides a potato machine which comprises a rack, a machine head is arranged at one end of the rack, a potato shoveling-out assembly is arranged on the machine head, and a feeding and screening assembly is arranged on the rack; the potato shoveling-out assembly comprises a headstock, the headstock is arranged at the front end of the machine head, a traveling wheel is arranged at the front end of the headstock, a follower wheel is arranged on the inner side wall of the machine head, a blocking piece is arranged in the follower wheel, a shoveling frame is arranged on the inner side wall of the machine head, a shoveling plate is arranged on the shoveling frame, and a moving chain is arranged in the machine head. And a feeding roller is arranged on the inner side wall of the movable chain. By means of the technical scheme, the technical problems that in the prior art, traditional potato planting and harvesting mainly depend on manpower, labor intensity is large, efficiency is low, the requirement for large-scale planting cannot be met, and therefore mechanical equipment is urgently needed to replace manual labor are solved.

The utility model discloses an end face positioning device for welding a circular punch, which relates to the technical field of machining, and comprises a lathe working headstock and a positioning component arranged in the lathe working headstock, and a machine tool body is arranged at the bottom end of the lathe working headstock; a shockproof assembly is arranged on the inner wall, close to the switching disc, of the lathe working headstock. Through the positioning assembly and the shockproof assembly, the effects of improving the working efficiency and improving the quality are achieved, workpieces can be quickly positioned through the positioning assembly, when the workpieces are disassembled and reinstalled, tool setting is not needed again, the workpieces can be directly installed, and therefore when the workpieces of the same batch are machined, only tool setting is needed for the first time, and the machining efficiency is improved. The workpiece can be machined only by installing and fixing the workpiece every time, in the machining process, the stability of the positioning assembly is guaranteed through the anti-vibration assembly, the positioning assembly is made to abut against the end of the workpiece all the time, and therefore the working efficiency and quality are improved.

The utility model provides a self-positioning shaft part grinding driving clamp with an opening type tooth groove, and belongs to the technical field of machining clamps. The machine tool is provided with a machine tool headstock and a tailstock which are respectively provided with a tip used for clamping two ends of a workpiece. The device further comprises a shaft sleeve, a sliding shaft, a shifting block and a spring. The shaft sleeve is coaxially and fixedly connected with a driving plate of a machine tool headstock; the sliding shaft is supported on the outer circle of the shaft sleeve through dense ball bearings and can move in the axial direction, and the shaft sleeve and the sliding shaft are connected through a guide structure to achieve circumferential rotation limiting of the sliding shaft. The shifting block is fixed to the end of the sliding shaft and used for being inserted into an opening tooth groove of a workpiece. A spring is arranged between the shaft sleeve and the sliding shaft and used for pushing the sliding shaft and the shifting block to reset. One-time clamping and grinding of the workpiece are achieved through automatic alignment of the shifting block and the tooth groove of the workpiece, and the shifting block can be replaced to adapt to different tooth groove structures. The clamp is simple in structure, suitable for an automatic production line and capable of remarkably improving the machining efficiency and precision.

The invention relates to the field of semi-axle machining, in particular to an automobile semi-axle grinding device which comprises a rail assembly and a grinding assembly, the rail assembly is provided with a fixed-position headstock and a left-right sliding tailstock, and the headstock and the tailstock are each provided with a center mechanism for aligning and locking the end of a semi-axle. According to the semi-shaft grinding center, the positioning top, the limiting top and the abutting disc which are arranged in a mutually-nested and sliding mode are adopted, the semi-shaft is sequentially positioned and limited, and therefore the dual functions of high-precision positioning and grinding load bearing which need to be borne by a traditional center at the same time are separated; meanwhile, the abutting disc piece and the limiting top jointly bear axial thrust and radial load generated in the grinding process; and then the V-shaped block is matched to carry out high-precision supporting on the ground half shaft area, so that stable limiting in the whole half shaft grinding process is achieved, and long-time high-precision grinding operation can be carried out.

This technology provides efficient and accurate positioning of test heads while reducing their footprint. [Solution] The test head frame includes a holding member to which the test head is fixed, a rectangular first frame that holds the holding member on the outside of the holding member, a rectangular second frame that holds the first frame on the outside of the first frame, and a third frame that holds the second frame on the outside of the second frame. The holding member and the first frame are provided with a first adjustment mechanism that allows the holding member to move relative to the first frame in a first direction. The first frame and the second frame are provided with a second adjustment mechanism that allows the first frame to move relative to the second frame in a second direction perpendicular to the first direction. The second frame and the third frame are provided with a tilt adjustment mechanism that allows the second frame to be tilted relative to the third frame.

A rotating shaft device and a machine tool belong to the technical field of machine tool processing. A rotor of the torque motor is connected with the rotary spindle through a rotor connecting disc and bolts, a stator is fixed to a rear end cover through screws, the rear end cover is rigidly connected with the rear end of the headstock box through screws, an annular cooling water groove is formed in the outer circle of the stator, and the stator is connected with the headstock box and matched with the hole wall of the headstock box. The rotary spindle is directly driven by the torque motor to rotate, no mechanical transmission mechanism is arranged in the middle of the rotary spindle, and the rotary spindle is simple in structure, easy to maintain, free of lubrication and free of mechanical abrasion. No reverse transmission gap exists, the transmission precision is high, and the dynamic performance is good. Three sealing structures are arranged, a tight protective barrier is built for the rotating shaft device, cuttings and cutting fluid can be effectively prevented from entering the device, and reliable and stable operation of a machine tool is guaranteed.

The application discloses a kind of automatic assembly workbench of climbing vehicle boom, including bottom frame, conveying roller mechanism, centering positioning mechanism, positioning inner core, bolt positioning mechanism, side plate positioning mechanism, tail frame top mechanism and head frame rolling mechanism, conveying roller mechanism, centering positioning mechanism are evenly arranged in a straight line on climbing vehicle boom assembly station, two bolt positioning mechanisms are oppositely arranged in the head of climbing vehicle boom assembly station, and several side plate positioning mechanisms are evenly arranged in the middle and tail of climbing vehicle boom assembly station, and movable rack is provided on the length direction of climbing vehicle boom on the both sides of bottom frame, and head frame rolling mechanism and tail frame top mechanism are movably arranged on movable rack.The application can be combined with feeding boom automatic feeding, and combined with spot welding robot to realize automatic positioning and automatic assembly, which can greatly reduce labor cost, improve production efficiency, and its positioning is accurate, to ensure the production quality of climbing vehicle boom.