462results about "Tailstocks/centres" patented technology

The invention relates to the field of machine tools, in particular to a built-in oil cylinder integrated tailstock with double-movement and double-adjustment functions, which comprises a tailstock body and a tailstock body driving mechanism, the tailstock body driving mechanism is used for driving the tailstock body to slide on a machine tool, a center is arranged on the tailstock body in a sliding manner, and the center is arranged opposite to a main shaft of the machine tool. An oil cylinder assembly is arranged in the tailstock body and used for driving the center to slide, and the sliding direction of the center is consistent with the sliding direction of the tailstock body. The problems that an existing machine tool is limited in adjusting range and large in size can be solved.

The invention provides multichannel spinning and turning integrated equipment for a cylindrical part of a carrier rocket and a machining method. The multichannel spinning and turning integrated equipment comprises a lathe bed, a main spindle box, a closing-in spindle box, a spinning roller frame, a tail top, a heating system, a control system and a hydraulic system. The main spindle box, the closing-in spindle box, the spinning roller frame and the tail top are installed on the lathe bed. The main spindle box is connected with the closing-in spindle box and drives the closing-in spindle box to work, a cylindrical part blank is clamped between the closing-in spindle box and the tail top, the spinning roller frames are located on the two sides of the cylindrical part blank, and the heating system is installed on the spinning roller frames; the control system is connected with the main spindle box, the closing-in spindle box, the spinning roller frame, the heating system and the hydraulic system. The hydraulic system is connected with the main spindle box, the closing-in spindle box, the spinning roller frame and the tail top. Through cooperation of the main spindle box, the closing-in spindle box, the spinning roller frame, the tail top and the like, the in-situ machining function combining forced spinning machining, closing-in machining and turning machining of cylindrical parts, conical parts and curved-bus-shaped parts of the carrier rocket is achieved.

The invention relates to a multi-tool-position metal cutting numerical control lathe which comprises a lathe body, a main shaft, an annular piece, a tool clamping mechanism and a feeding mechanism. The main shaft is rotatably mounted on the lathe body; the annular piece and the main shaft are coaxially arranged; the multiple tool clamping mechanisms are arranged in the circumferential direction of the annular part at intervals. Each tool clamping mechanism comprises a sliding base, a clamping base, a clamping plate and a limiting driving assembly. The sliding seat is mounted on the annular piece in a sliding manner along the radial direction of the annular piece; the clamping seat is rotatably mounted on the sliding seat; the multiple clamping plates are installed on the clamping base in a sliding mode, and the multiple clamping plates are arranged in a circular array mode with the axis of the clamping base as the circle center. The limiting driving assembly can drive the clamping plate to move so as to clamp the tool, and the limiting driving assembly can further limit rotation of the clamping base. Therefore, the cutters can be clamped, the angles of the cutters can be adjusted, and then the CNC system controls the feeding mechanism to drive the cutters to cut workpieces at the same time.

The invention relates to the technical field of eccentric shaft machining lathes, in particular to an eccentric shaft machining lathe with an eccentric center structure, which comprises a lathe main body, a fixed frame is fixedly connected to one side of the lathe main body, a movable frame is arranged on the fixed frame in a sliding fit manner, and a rotating seat is rotatably connected to the movable frame; a transmission mechanism is rotationally connected to the rotating seat, a stabilizing ring frame is rotationally connected to the rotating seat, a follow-up rotating ring is rotationally connected to the stabilizing ring frame, an eccentric block center mechanism is fixedly connected to the follow-up rotating ring, and an eccentric shaft is clamped and fixed to a three-jaw chuck on the lathe body; the eccentric block center mechanism is arranged on the follow-up rotating ring, the two angle-adjustable center plates abut against the fan-shaped eccentric block on the eccentric shaft, when the eccentric shaft rotates for machining, the fan-shaped eccentric block on the eccentric shaft is more stably and accurately supported, vibration, unbalance and deformation are reduced, and the machining precision and quality are improved.

The utility model discloses center-height-adjustable car jacking equipment for motor machining, and belongs to the technical field of machining machinery. The equipment comprises a lathe body, a lathe spindle is arranged at one end of the lathe body, a lathe tailstock is arranged at the other end of the lathe body, the lathe spindle is provided with a left center, the lathe tailstock is provided with a right center, the left center and the right center are coaxially arranged, and a motor to be turned is arranged between the left center and the right center in a jacking mode. The lathe body is provided with a lifting seat capable of supporting a motor to be turned, the lifting seat is provided with a lifting assembly for driving the lifting seat to ascend and descend, and the motor to be turned is axially centered between the left tip and the right tip through ascending and descending. The utility model has the advantage that the centering top-mounting of motors to be turned with different sizes is convenient.

A horizontal turning and milling combined machining center comprises an inclined lathe bed, a first guide rail and a second guide rail are arranged on the inclined face of the inclined lathe bed in the Z-axis direction, and the first guide rail is located above the second guide rail. A turning and milling cutter tower assembly is connected to the first guide rail in a sliding mode, and a tailstock unit is connected to the second guide rail in a sliding mode. A main shaft unit is further fixed to the inclined lathe bed, and the main shaft unit is located at the end of the second guide rail and is opposite to the tailstock unit. An automatic tool changing system is arranged behind the lathe bed; the main shaft unit is a heavy-load main shaft unit which is convenient to upgrade and reconstruct, the tailstock unit is a tailstock unit for accurately controlling the moving position of the numerical control machine tool, and the numerical control machine tool is used for overcoming the defects in the prior art.

The utility model discloses a hydraulic end face driving clamp for a shaft. The hydraulic end face driving clamp comprises a driving pin seat, a support and a base which are sequentially connected in the axial direction. A lower tip is embedded in the axis of the driving pin seat, and a driving pin penetrates through the driving pin seat and is movably arranged; a floating assembly, a lower push rod and a lower pull rod are sequentially arranged below the driving pin in an ejecting mode and axially penetrate through the support and the base. According to the hydraulic end face driving clamp for the shaft, the upper portion and the lower portion of the clamp are positioned through center holes, a lower tip is changed into a fixed tip, the end face is driven through the floating assembly after positioning, the driving pin is made to be in a floating free movement mode and can float along with jumping of the end of a part, and it is guaranteed that the driving pin is evenly stressed.

Clamping device (S) for a workpiece (W), with a) a sleeve (2) for exerting a clamping force on the workpiece (W), which is displaceably guided and supported by a spring element (34), b) a self-locking feed device (3) for the spindle sleeve (2), c) an electric motor (6) for driving the feed device (3), d) an electrical measuring device (42) for continuously recording the actual value of the compression travel (344) of the spring element (34), and e) a control system (7) which e1) determines a first actual value of the clamping force of the sleeve (2) from the current of the motor (6) and stops the motor (6) when a target value of the clamping force is reached, and e2) determines a second actual value of the clamping force of the sleeve (2) from the actual value of the compression travel (344) achieved in this process and switches off the motor (6) if the value matches the target value and / or the first actual value of the clamping force of the sleeve (2).

The invention provides a clamping mechanism and method for driving a shaft gear to rotate for machining. A clamping ring is mounted on a top positioning sleeve of a clamp seat in a clearance fit manner; one side of the clamping ring is fixedly provided with a single-acting oil cylinder in the radial direction, the single-acting oil cylinder penetrates through a U-shaped groove formed in the top positioning sleeve, the other side of the clamping ring is fixedly provided with guide plates in the radial direction, and the guide plates penetrate through guide grooves formed in the top positioning sleeve; spring jacking mechanisms are mounted in pairs in the radial direction of the clamping ring and located on the two sides of the guide plate, and the spring jacking mechanisms are matched with the outer circle of the top positioning sleeve; a positioning disc for axially limiting the clamping ring is fixedly mounted at the top of the clamp seat; the upper tip and the lower tip are used for tightly jacking the two axial ends of the shaft gear. The radial clamping position can be adjusted according to the actual condition of the shaft gear clamping outer circle, the coaxial requirement for the clamped shaft gear outer circle relative to center holes in the two ends does not exist, and over-positioning cannot be generated in shaft gear clamping.

The present invention relates to the technical field of mechanical manufacturing, and disclosed are a centering fixture, machining tool and machining method for a hollow shaft. The centering fixture comprises a center rod; truncated-conical holes for matching tool centers are formed at two ends of the center rod; a first end of the center rod is provided with a truncated-conical boss for abutting against one end of the hollow shaft; a truncated-conical plug for abutting against the other end of the hollow shaft is movably fitted over a second end of the center rod; the truncated-conical plug and the center rod rotate synchronously; and a power pin for fitting a transmission rod of the tool centers is provided on the truncated-conical boss. The centering fixture for a hollow shaft provided by the present invention uses the friction force and clamping force between tool centers and a center rod of a centering fixture, and also increases a mechanical transmission mode by means of fitting of a power pin provided on the centering fixture and a transmission rod of the tool centers, thereby avoiding the problem of rotation delay of the hollow shaft during machining, and improving the finish machining effect of the hollow shaft.

The present invention relates to the technical field of turning machine tools, and discloses a valve core turning device and a valve core production process, comprising a machine tool, wherein the machine tool is provided with a turning mechanism and a driving mechanism, wherein a driving motor and a tailstock are provided inside the machine tool, a three-jaw chuck is fixedly connected to the output shaft of the driving motor, and a cutting mechanism is provided on the driving motor, wherein the cutting mechanism comprises a cutter, a pushing assembly, and an electric push rod, wherein the cutter is used to cut a workpiece, the pushing assembly is used to drive the cutter to cut the workpiece after turning, and the electric push rod is used to adjust the cutting position of the cutter; the machine tool is also provided with a locking mechanism. The present invention realizes the effect of being able to turn and shape the stop valve core, and after turning is completed, it can also automatically cut the turned workpiece, and can also adjust the cutting position of the cutter, and can also achieve the effect of automatic top fixing.

The invention belongs to the technical field of eccentric shaft machining, and particularly discloses an eccentric shaft multi-procedure one-time clamping machining technology and device which comprises a lathe bed body, a switchable positioning unit, a modular tool magazine, a precision detection module and a control system, and the switchable positioning unit, the modular tool magazine, the precision detection module and the control system are arranged on the lathe bed body. The switchable positioning unit comprises a three-jaw centering assembly, a manual fine adjustment chuck, an automatic compensation positioning mechanism and a tailstock center, the three-jaw centering assembly is in sliding connection with the top position of the lathe bed body, and the manual fine adjustment chuck and the automatic compensation positioning mechanism are both connected with the three-jaw centering assembly through a switching gear set; the modularized tool magazine is located on one side of the lathe bed body. According to the multi-procedure one-time clamping machining technology and device for the eccentric shaft, one-time clamping can meet two precision requirements, the equipment specialization problem is solved, the equipment input cost is reduced, the equipment utilization rate is increased, and meanwhile the machining precision and efficiency are guaranteed.

The invention relates to equipment and a method for machining an internal thread with a large length-diameter ratio by adopting a whirlwind thread milling cutter. The technical problem that machining efficiency and precision are affected due to the fact that the length-diameter ratio of an existing workpiece is large is solved. Comprising a stand column vertically arranged on a lathe bed, a horizontal sliding seat is vertically and movably arranged on one side of the stand column through a sliding seat lifting assembly, a spindle device is horizontally and movably arranged on one side of the horizontal sliding seat through a spindle translation mechanism, and the spindle device is provided with a clamping assembly used for clamping cylindrical workpieces which are vertically distributed; a whirlwind thread milling cutter is arranged above the main shaft device, the whirlwind thread milling cutter is arranged on an electric main shaft assembly, and a main shaft tip assembly is arranged below the main shaft device through a tip lifting assembly. The device has the advantages that the radial distance between a workpiece and the milling cutter is adjusted through movement linkage of the sliding seat lifting assembly, the main shaft translation mechanism and the tip lifting assembly, it is ensured that the milling cutter can accurately cut into the complex position on the inner side of the workpiece, meanwhile, large-length-diameter-ratio internal threads can be machined, and limitation of traditional machining is avoided.

The invention belongs to the technical field of metal material cold machining strengthening, and particularly relates to an omni-directional powerful numerical control rolling machine tool for axle strengthening, which comprises a machine tool body, and a spindle box, a radial feeding mechanism and a tailstock which are sequentially arranged on the machine tool body, opposite rotary tables are arranged above the radial feeding mechanism, and rolling devices are arranged on the rotary tables; the rolling device is internally provided with two rolling heads arranged back to back, and the rolling heads are switched through a rotary table. The invention further discloses an axle strengthening machining method which comprises six steps that three-dimensional space accurate positioning is achieved through the axial and radial numerical control seven-axis linkage interpolation technology, and the rolling device is pushed through the hydraulic driving system to apply high-strength acting force; the rotary table is adopted to drive the rolling heads to quickly switch the rolling heads for different shaft sections, so that the efficiency is improved; the device has the advantages of high automation, large rolling force, high reliability and the like, the roughness of the workpiece surface is remarkably reduced, the surface hardness is improved, the axle surface layer is strengthened, the wear resistance is improved, and the service life is prolonged.

The invention discloses a multi-station turning device for part production, and particularly relates to the technical field of turning machining, the multi-station turning device for part production comprises a numerical control lathe body, an electric tailstock is slidably connected in the numerical control lathe body, a first mounting frame is arranged in the numerical control lathe body, and a second mounting frame is arranged on one side of the first mounting frame; according to the numerical control lathe, multiple connecting columns drive clamping plates to be closed to clamp and fix the two ends of the long-axis part through springs in multiple mounting caps, so that the two ends of the long-axis part can be clamped and fixed at the same time, the stability of the device during placement is kept, a second driving motor can be started through a PLC of the numerical control lathe body, and the machining precision is improved. Furthermore, the two second moving seats are far away from each other in opposite directions under the thread transmission action of the two-way screw rod, and then the use distance between the two mounting frames can be adjusted, so that the mounting frames can adapt to long-axis parts with lengths.

The invention discloses a high-rigidity ejector pin tailstock for blade machining, and relates to the technical field of ejector pin tails.The high-rigidity ejector pin tailstock comprises an operation table, an adjusting block is installed at the upper end of the operation table in a sliding mode, and meanwhile an ejector pin is installed on one side of the adjusting block in a sliding mode; according to the high-rigidity ejector pin tailstock for blade machining, when the adjusting plate moves, the adjusting plate is matched with the butt joint block to synchronously drive the arc-shaped plates to move, the multiple sets of arc-shaped plates surround to form a cylindrical shape, and the rubber ring is limited through the groove holes formed in the arc-shaped plates, so that when the arc-shaped plates move, the rubber ring is stretched, and the blade machining precision is improved. And meanwhile, in the stretching process, a gap between every two adjacent arc-shaped plates is filled with a rubber ring, and it is guaranteed that the whole blade is kept stable when the ends of the blade are centered.

The invention relates to the technical field of production and machining, and particularly discloses a floating center device and a using method, the floating center device is installed on a machine tool tailstock, and the floating center device comprises a center body, a center head and a ball head rod. The center body serves as a mounting base body and is connected with the center head, and an end chamfer of the center head makes contact with a spherical line of a to-be-machined product. The ball head rod is arranged in the center body and can adapt to different directions, and the gap between the ball head rod and the center head is controlled to be smaller than or equal to 1 degree. The center body and a machine tool tailstock are installed in a matched mode, and an autorotation Morse tailstock can be selected. The center body is provided with a conical section and a cylindrical section, and the cylindrical section is provided with a spherical groove for installing the ball head rod. The pressing plate assists in fixing the ball head rod, so that the ball head rod floats slightly, and lubricating liquid is filled between contact surfaces. The using method comprises the steps that the device is installed on a machine tool tailstock, adjusted and moved downwards to the center head to make contact with a to-be-machined product, tight attachment is achieved through self-adaptive adjustment of the ball head rod, and therefore the product is pressed and positioned, and follow-up machining is facilitated. According to the device and the using method, the machining precision and efficiency are improved.

The invention relates to the technical field of motor shell punching, and discloses a small and special motor shell mounting hole punching device which comprises an operation table; the supporting assembly is used for supporting and fixing the motor shell; the cleaning assembly is used for cleaning the punched motor shell; the polishing assembly is used for polishing the warped edge on the motor shell; a perforating machine is installed on the operation table, the supporting assembly comprises a motor, the motor is installed at the bottom of the operation table, and the output end of the motor is connected with a first gear. Through the arrangement of the supporting assembly, the two supporting rods and the two elastic rods are matched to support and fix the interior of the motor shell, and when the two supporting rods rotate to convey the motor shell to the position below the perforating machine for perforating operation, the motor shell is conveyed to the position below the perforating machine through an internal supporting mode; and the situation that the motor shell deforms during punching is avoided as much as possible, so that the product quality is improved.

The invention relates to the technical field of numerical control machine tools, and particularly discloses a diameter-linked rigidity-adjustable hydraulic tailstock structure and a control system.The diameter-linked rigidity-adjustable hydraulic tailstock structure comprises a base and a tip arranged on the base; the diameter acquisition mechanism is fixedly arranged on the end part, facing one end of the workpiece, in the base, and the diameter acquisition mechanism is used for outputting linear driving power related to the diameter parameter of the workpiece according to the diameter of the workpiece; the linkage adjusting piece is in transmission connection with the diameter obtaining mechanism, and the linkage adjusting piece is arranged in an inner cavity of the base in a linear moving mode; the force adjusting mechanism is fixedly installed on the base, connected to the linkage adjusting piece and used for changing the pressure applying force on the tip according to the moving stroke of the linkage adjusting piece. The tailstock device solves the problem that the tailstock device generally lacks the adjusting capacity of real-time linkage with the workpiece size.

The invention discloses a top clamping tool clamp for machining a complete sphere, which comprises an alignment template, a cutter bar device and a tool sleeve, and the tool sleeve is divided into a front-end tool sleeve and a rear-end tool sleeve; the longitudinal spherical shape of the alignment template is asymmetrical in the front-back direction, a wide step is arranged on the surface of the hemisphere on the rear side, and a wide outer cylindrical surface machined through tool setting according to the wide step is matched with the first inner cylindrical surface in the front-end tool sleeve. The invention further discloses a machining method of the complete ball, and on a center lathe, the clamping and jacking tool clamp for machining the complete ball is utilized, and the machining method comprises the steps that the position of the alignment sample plate is determined; clamping the cylindrical blank; rough machining twice; adjusting the positions of a tailstock and a middle sliding plate; installing and adjusting the height position of the blade; two times of finish machining; and the two tip chucks are removed, and a workpiece of a finished product sphere is obtained. The invention belongs to the technical field of mechanical equipment manufacturing, and solves the problems that a clamp in the prior art is unreasonable in structure, and a center lathe is difficult to accurately machine a whole ball.

The invention belongs to the technical field of turning, and particularly relates to a turning device for motor shaft machining, which comprises a lathe body and a slide rail arranged on the lathe body, a splash-proof door is slidably arranged on the lathe body, a three-jaw chuck is rotatably arranged on the lathe body, a tool apron and a moving part are slidably arranged on the slide rail, and the moving part comprises a containing seat. An avoiding groove and a limiting groove are formed in the accommodating seat; according to the turning device for machining the motor shaft, when a solid motor shaft blank is machined, a conical structure composed of the sharp claws can be directly utilized to abut against a center hole of the motor shaft blank to achieve positioning, and when a hollow motor shaft blank is machined, inner supporting and fixing can be achieved only by driving the sharp claws to expand in the radial direction through an adjusting mechanism; the embedded seat of the limiting mechanism can be matched with the limiting groove of the containing seat to lock the position of the mounting column, when workpieces of the same model are machined, the second handle is pulled to enable the sharp claw to be separated from the workpieces after locking of the mounting column is removed, rapid unloading of the workpieces is achieved, and when a new workpiece is clamped again, only the mounting column needs to be reset, and the original positioning precision can be restored.

The invention relates to a machining method of an oil cylinder and the oil cylinder. The machining method of the oil cylinder comprises the steps that a process threaded hole is formed in the small-diameter end of the oil cylinder to be machined, one end of a double-thread screw is used for being assembled with the process threaded hole, the other end of the double-thread screw is used for being assembled with a positioning disc of a lathe, the large-diameter end of the oil cylinder to be machined is assembled with an umbrella-shaped tip installed on a tailstock of the lathe, and the oil cylinder to be machined is attached to the end face of a four-jaw chuck of the lathe. Tightening the locking nut and the four-jaw chuck; an adjusting screw rod is arranged between the four-jaw chuck and the scapular plane of the oil cylinder to be machined, and the adjusting screw rod and the four-jaw chuck are adjusted respectively, so that the jerk value of the large-diameter end of the oil cylinder to be machined and the jerk value of an inner hole of the large-diameter end are smaller than or equal to 0.02; and turning the large-diameter end of the oil cylinder to be machined, and turning the first aperture section, the second aperture section and the third aperture section of the oil cylinder to be machined. The invention further provides the oil cylinder which is obtained through the machining method. The problems that an existing oil cylinder machining method is low in machining precision and efficiency and high in cost are solved.

The application provides a special tool for a flat top center, which can guarantee the positioning accuracy and stability of the top center and ensure the machining accuracy of the blade. The tool comprises a top center shaft, which is installed in a top center seat, the top center seat is installed in a mounting cavity of a machine tool slide cylinder, and the top center seat and the top center shaft are connected by screws, the shape of the mounting cavity of the machine tool slide cylinder is matched with the shape of the top center seat; the top center shaft comprises a shaft body and a top head, the top surface of the top head is a flat surface, and the top surface of the top head is fixedly installed with a tooth surface pressing block; the shaft body comprises three cylindrical sections with decreasing radii from top to bottom, namely a first cylindrical section, a second cylindrical section and a third cylindrical section, the outer part of the joint between the third cylindrical section and the top center seat is successively sleeved with a thrust ball bearing and a needle bearing from top to bottom; the outer part of the joint between the second cylindrical section and the top center seat is successively sleeved with a pair of angular contact ball bearings from top to bottom, the upper end surface of the outer ring of the upper angular contact ball bearing is press-fitted with an end cover, the end cover is sleeved on the outer part of the first cylindrical section, and a first sealing ring is arranged at the joint between the end cover and the first cylindrical section.

The machine tool (10) according to the invention has a work spindle (20), a workpiece table (12) and a workpiece holding device (15), which is attachable to the workpiece table (12), for supporting workpieces (11) that are long and / or have a complex shape, wherein the workpiece holding device (15) has an interchangeable workpiece bearing unit (21) which can be used to hold or support the workpiece (11) at a particular point. The particular feature of the present invention is that the workpiece bearing unit (21) can be interchanged automatically by the work spindle (20).

The present invention discloses a tailstock center device with a fine-tuning function, including a seat body, a mandrel for center installation, and a fine-tuning mechanism for radial deflection of the mandrel. The mandrel is inserted into the seat body, the fine-tuning mechanism is arranged on the seat body, and the fine-tuning mechanism is connected to the mandrel in a transmission manner. The present invention is provided with a fine-tuning mechanism for radial deflection of the mandrel. The fine-tuning shaft of the fine-tuning mechanism drives the radial deflection of the mandrel through a fine-tuning deflection member. One end of the fine-tuning deflection member is arranged on the mandrel, and the other end is arranged in the annular groove of the fine-tuning shaft. The fine-tuning deflection member abuts against the side wall of the annular groove, and the mandrel is driven to move through such cooperation. The abutting surface between the fine-tuning deflection member and the side wall of the annular groove is an arc surface. The contact point between the fine-tuning deflection member and the side wall of the annular groove will adaptively move up and down with the axial movement of the fine-tuning shaft, thereby driving the radial deflection of the mandrel. The present invention does not need to deflect the entire device to achieve the deflection of the mandrel. The operation is simple, the adjustment error is small and the precision is high, thereby ensuring a high precision and ensuring the processing accuracy of the workpiece.

A workpiece support (18) for supporting a workpiece (14), the workpiece support (18) comprising a workpiece support body (54) and a workpiece support element (20) associated with the workpiece support body (54) for engaging the workpiece (14) and a piezo electric actuator (32) being associated with the workpiece support body (54) for moving the workpiece support element (20) for supporting the workpiece (14). The workpiece support body (54) comprising one or more flexures (44) that enable a movable portion (42) of the workpiece support body (54) to move when acted on by the piezo electric actuator (32) and to move the workpiece support element (20). The workpiece support (18) can comprise two or more workpiece support bodies (54) and a piezo electric actuator (32) being associated with each workpiece support body (54) for moving the respective workpiece support elements (20).

This application discloses a fixing device for a double-ended stud bolt used in machine tools, relating to the technical field of machine tool fixtures. It includes a machine tool body, a chuck rotatably mounted on the machine tool body, an abutment member, and a tailstock slidably mounted on the machine tool body. The chuck is perpendicular to the sliding direction of the tailstock. The abutment member is rotatably mounted on the tailstock, with an abutment hole at one end away from the mounting rod, the center of which is at the same height as the center of the chuck. The chuck clamps one end of the double-ended stud bolt, and then the tailstock slides, causing the abutment member on the tailstock to abut against the other end of the double-ended stud bolt. One end of the double-ended stud bolt is held by the chuck, while the other end directly abuts against the abutment hole. This eliminates the need for pre-drilling and cutting off the drilled portion, simplifying the processing flow and improving production efficiency. Furthermore, it eliminates the need to reserve space for cutting off the drilled portion, saving production costs.

The invention discloses a horizontal double-supporting-plate machine tool with a tailstock, and relates to the technical field of numerical control machine tools. The horizontal double-supporting-plate machine tool with the tailstock comprises a spindle box, a machining base is fixedly connected to the right side of the spindle box, a tailstock sliding rail is fixedly connected to the top of the machining base, a tailstock body is movably connected to the top of the tailstock sliding rail, an auxiliary feeding frame is fixedly connected to the top of the machining base, and an anti-rolling mechanism is fixedly connected to the top of the machining base. According to the horizontal type double-supporting-plate machine tool with the tailstock, fan blades rotate to push air to the air outlet head through the connecting pipe, the air outlet head generates air flow blown out, the air flow flows through the surface of a machined part to blow downwards, chippings cut by machining are sucked towards the left side, the chippings are prevented from being wound on a tool, and the machining efficiency is improved. And the chippings can be broken under the action of gravity and airflow thrust along with the increase of the length of the chippings, so that the influence of coiling and cutting on machining is avoided, and the effect of increasing the machining speed can be achieved.

The utility model relates to the technical field of numerical control machine tools, and discloses a numerical control machine tool safety ejector rod mechanism which comprises a support and a supporting rod, the bottom of the support is slidably connected with a support through a guide rail, a sleeve is arranged at the top end of the support, and an electric push rod is fixedly installed on the inner wall of the top end of the support through a backup plate. A telescopic rod of the electric push rod is connected with the top of a sleeve through a connecting plate, a sealing assembly is arranged on one side of the sleeve, and the interior of the sleeve is rotationally connected with a supporting shaft through a bearing. The electric push rod drives the sleeve to drive the tip to horizontally move, the tip can limit one side of a workpiece and can be suitable for workpieces of different sizes, manual operation is not needed, manpower and time are saved, the guide rail can support and guide the sleeve through the support, and the stability of the sleeve can be kept; buffering can be provided between the center and the workpiece through the damping gas spring.