CN210387602U

CN210387602U - Feeding device of high-precision lathe

Info

Publication number: CN210387602U
Application number: CN201921466701.9U
Authority: CN
Inventors: 蒋华明; 汤成瑞; 黄顺仁
Original assignee: Precision Huanyu Hardware Shenzhen Co Ltd
Current assignee: Precision Huanyu Hardware Shenzhen Co Ltd
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2020-04-24
Anticipated expiration: 2029-09-04

Abstract

The utility model discloses a material feeding unit of high accuracy lathe, its technical scheme main points are: the automatic lathe comprises a frame, the frame is connected with damper, damper includes the cushion socket of being connected with the frame slides, press from both sides tight a plurality of tight pieces of clamp with the work piece clamp, respectively with press from both sides tight piece and rotate a plurality of first gyro wheels of being connected and the hydro-cylinder that the drive cushion socket removed, the shock attenuation groove has been seted up to the frame upper end, the cushion socket lower extreme is arranged in and is slided in the shock attenuation groove, the mounting groove with the coaxial setting of lathe main shaft is seted up to the cushion socket near the terminal surface of lathe, press from both sides tight piece and arrange in the mounting groove, it is connected with the rotation of first gyro wheel to press from both sides the terminal surface that tight piece is close to the mounting groove axis, the axis of first gyro wheel is. The utility model discloses a rational in infrastructure utilizes damper to inject the position that lathe one end was kept away from to the work piece, makes the work piece be difficult for producing when rotating and beats.

Description

Feeding device of high-precision lathe

Technical Field

The utility model belongs to lathe auxiliary assembly, more specifically say, it relates to a material feeding unit of high accuracy lathe.

Background

With the rapid development of mechanical automation technology, mechanical automation production is gradually replacing traditional manual production and gradually developing towards integrated processing equipment. In order to make the lathe work continuously during machining, a feeding device is usually used to feed the material in the form of a rod tube to the lathe.

Chinese patent CN2584350 discloses an automatic feeding, clamping and tripping device of a numerical control lathe, which has the technical key points that: the automatic clamping and tripping device is driven to linearly move by reciprocating and circulating operation of an air pressure or hydraulic piston rod controlled by an electromagnetic valve, and the sliding block is longitudinally driven to move forwards or backwards.

Above-mentioned scheme does not prescribe a limit to the holistic position of work piece when using, and when the main shaft of lathe drove the work piece rotatory, the work piece was kept away from the one end of lathe main shaft and can be produced huge beating, can arouse the vibrations of lathe this moment to influence the rotary accuracy of main shaft and the quality of the work piece of processing.

Therefore, a new technical solution is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a material feeding unit of high accuracy lathe for solve the work piece and rotate the in-process and produce and beat, influence the problem of lathe main shaft rotation accuracy.

In order to achieve the above purpose, the utility model provides a following technical scheme: a feeding device of a high-precision lathe comprises a frame arranged on one side of a lathe spindle box, wherein the frame is connected with a damping mechanism for limiting one end position of a workpiece far away from the lathe, the damping mechanism comprises a damping seat connected with the frame in a sliding manner, a plurality of clamping blocks for clamping the workpiece, a plurality of first rollers respectively connected with the clamping blocks in a rotating manner and an oil cylinder for driving the damping seat to move, a damping groove parallel to the lathe spindle is formed in the upper end of the frame, the lower end of the damping seat is arranged in the damping groove in a sliding manner, an installation groove coaxial with the lathe spindle is formed in the end face of the damping seat close to the lathe, the clamping blocks are arranged in the installation groove, the end face of the clamping blocks close to the axis of the installation groove is rotatably connected with the first rollers, the axis of the first rollers is parallel to the axis of the installation groove, the first rollers jointly clamp, and a piston rod of the oil cylinder is connected with the damping seat.

Through adopting above-mentioned technical scheme, utilize the cushion socket to promote the work piece and pass the main shaft and process, utilize when the work piece rotates to press from both sides the tight piece and prescribe a limit to the position that the lathe one end was kept away from to the work piece, reduce the range of beating of work piece to reduce the influence to lathe processing work piece, also make the precision of the work piece of processing difficult to receive the influence.

The utility model discloses further set up to: the damping seat is connected with a driving mechanism for driving the clamping block to be close to or far away from a workpiece, the driving mechanism comprises a plurality of connecting rods hinged with the damping seat and sliding, a driving rod hinged with the connecting rods, a spring for driving the driving rod to move towards the direction far away from the damping seat and a butting block fixed with the frame, a waist-shaped groove penetrates through the side wall of each connecting rod, the damping seat and a hinged shaft of each connecting rod slide in the waist-shaped groove, one end of each connecting rod is fixed with the end face, far away from the axis of the mounting groove, of the clamping block, the other end of each connecting rod is hinged with the driving rod, one end, hinged with the driving rod, of each connecting rod inclines towards the axis of the mounting groove, the axis of each driving rod coincides with the axis of the mounting groove and penetrates through one end, far away from the mounting groove, of the spring is sleeved on one, the other end of the spring is fixed with one end, far away from the damping seat, of the driving rod, when the damping mechanism does not limit the workpiece, the driving rod is abutted to the abutting block, the spring is in a contraction state, and the first rollers are far away from each other.

Through adopting above-mentioned technical scheme, before arranging the work piece in the mounting groove, thereby the actuating lever makes three gyro wheel keep away from with butt piece butt, can directly arrange the work piece in the mounting groove this moment, only the hydro-cylinder promotes the cushion socket and removes towards the lathe, thereby the spring exerts the elasticity of keeping away from the lathe to the actuating lever and removes towards the direction of keeping away from the lathe, thereby it is confirmed to drive the position that three first gyro wheel was close to the work piece each other.

The utility model discloses further set up to: the machine frame is connected with a supporting mechanism for supporting a workpiece, the supporting mechanism comprises a supporting seat connected with the machine frame and two second rollers rotatably connected to the upper end of the supporting seat, the side walls of the two second rollers are abutted to the side wall of the workpiece, and the axis of each second roller is parallel to the axis of a lathe spindle.

By adopting the technical scheme, the middle position of the workpiece is supported by the supporting mechanism, so that the workpiece cannot bend downwards under the action of gravity, the vibration generated by the workpiece is reduced during rotation, and the rotation of the main shaft of the lathe is not easily influenced.

The utility model discloses further set up to: the end face of the shock absorption seat close to the lathe is fixedly connected with a guide rod, the other end of the guide rod is connected with a supporting seat, the supporting seat is arranged in the shock absorption groove to slide, and the guide rod is a telescopic rod.

Through adopting above-mentioned technical scheme, promote the supporting seat towards the lathe when the work piece moves towards the lathe, make the supporting seat can not produce the hindrance to the removal of shock attenuation seat, utilize the guide bar to make the supporting seat resume the normal position simultaneously.

The utility model discloses further set up to: the supporting seat upper end articulates there is the compressing rod that compresses tightly the work piece, compressing rod is connected with the work piece upper end, compressing rod is connected with its downward pivoted torsional spring of drive, the one end and the supporting seat of torsional spring are connected, the other end and the compressing rod of torsional spring are connected.

By adopting the technical scheme, the pressing rod is utilized to apply downward pressure to the workpiece, so that the workpiece is not easy to be disconnected from the second roller in the rotating process, the workpiece is not easy to jump in the rotating process, and the influence on the rotation of the lathe spindle is reduced.

The utility model discloses further set up to: one end, far away from the supporting seat, of the pressing rod is rotatably connected with a third roller, the side wall of the third roller is abutted to the upper end of the workpiece, and the axis of the third roller is parallel to the lathe spindle.

Through adopting above-mentioned technical scheme, utilize the third gyro wheel to change the sliding friction of compressing tightly pole and work piece into rolling friction, reduced the frictional force between work piece and the compressing tightly pole to reduce the wearing and tearing of compressing tightly pole, made the compressing tightly effect of compressing tightly pole to the work piece be difficult for receiving the influence.

The utility model discloses further set up to: the guide rod penetrates through the supporting seat and is connected with the supporting seat in a sliding way, the end face of the supporting seat far away from the damping seat is fixedly connected with a limiting block, one end of the guide rod, which is far away from the shock absorption seat, is abutted against the limiting block, a push rod for driving the pressing rod to rotate upwards is arranged at the upper end of the supporting seat in a penetrating way, the upper end of the guide rod is fixedly connected with a driving block which drives the pushing rod to move upwards, the upper end of the driving block is provided with a wedge-shaped surface, one end of the wedge-shaped surface close to the shock absorption seat is inclined downwards, the wedge-shaped surface is abutted with the lower end of the push rod, the frame is fixedly connected with a positioning block for limiting the movement of the supporting seat, one end of the positioning block, which is far away from the damping seat, is abutted against the end face of the supporting seat, which is close to the damping seat, when the locating piece during with the supporting seat butt, wedge and catch bar lower extreme butt, catch bar upper end and compression bar lower extreme butt, the third gyro wheel removes towards the direction of keeping away from the supporting seat.

Through adopting above-mentioned technical scheme, when the one end that the shock mount was kept away from to the locating piece and the one end butt that the supporting seat is close to the shock mount, the guide bar is in tensile state, and ascending thrust is applyed to the catch bar to the drive block this moment, utilizes the catch bar to drive and compresses tightly the pole rebound, can directly place the work piece this moment between two second gyro wheels, no longer need the manual work to compress tightly the pole rebound.

The utility model discloses further set up to: the terminal surface fixedly connected with blotter that the locating piece is close to the supporting seat, blotter and supporting seat lateral wall butt.

Through adopting above-mentioned technical scheme, utilize the blotter to slow down the impact force between supporting seat and the locating piece to the probability that the locating piece produced the deformation has been reduced.

To sum up, the utility model discloses following beneficial effect has:

1. the position of one end of the workpiece, which is far away from the lathe, is limited by the damping mechanism, so that the workpiece is not easy to jump when rotating, the influence on the rotating precision of a lathe spindle is reduced, and the machining precision of the workpiece is not easy to be influenced;

2. the rotation of the workpiece is further limited through the supporting mechanism and the pressing rod, and the jumping of the workpiece in the rotation process is further reduced.

Drawings

FIG. 1 is a perspective view of the present embodiment;

FIG. 2 is a schematic diagram of the present embodiment for showing the driving mechanism;

fig. 3 is a schematic view for showing the supporting mechanism of the present embodiment.

Description of the drawings: 1. a frame; 11. a damping groove; 12. positioning blocks; 13. a cushion pad; 2. a damping mechanism; 21. a shock absorbing seat; 211. mounting grooves; 22. a clamping block; 23. a first roller; 24. an oil cylinder; 25. a guide bar; 26. a drive block; 261. a wedge-shaped surface; 3. a drive mechanism; 31. a connecting rod; 311. a waist-shaped groove; 32. a drive rod; 321. a fixed block; 33. a spring; 34. a butting block; 4. a support mechanism; 41. a supporting seat; 411. connecting grooves; 42. a second roller; 43. a hold down bar; 44. a third roller; 45. a torsion spring; 46. a push rod; 47. and a limiting block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

A feeding device of a high-precision lathe is shown in figure 1 and comprises a machine frame 1 arranged on one side of a lathe spindle box, the lower end of the machine frame 1 is arranged on the ground, the machine frame 1 is connected with a damping mechanism 2 limiting one end position of a workpiece far away from the lathe, the damping mechanism 2 comprises a damping seat 21 connected with the machine frame 1 in a sliding mode, three clamping blocks 22 for clamping the workpiece, a plurality of first rollers 23 (shown in figure 2) connected with the clamping blocks 22 in a rotating mode and an oil cylinder 24 for driving the damping seat 21 to move. The upper end of the frame 1 is provided with a damping groove 11 parallel to the lathe spindle, and the lower end of the damping seat 21 slides in the damping groove 11. The end face of the damping groove 11 close to the lathe is provided with a mounting groove 211 which is coaxial with the lathe spindle, the clamping block 22 is circumferentially arranged in the mounting groove 211, and the three clamp the workpiece together. The first rollers 23 are respectively disposed on the end surfaces of the clamping blocks 22 close to the axis of the mounting groove 211, the axis of the first rollers 23 is parallel to the axis of the mounting groove 211, and the side walls of the first rollers are abutted to the side walls of the workpiece. The cylinder body of the oil cylinder 24 is fixedly connected with the frame 1 by using bolts, the oil press for driving the oil cylinder to work is connected with the oil cylinder, and the piston rod of the oil cylinder 24 is connected with the shock absorption seat 21 by using bolts. The damping seat 21 is used for pushing a workpiece to penetrate through the spindle for machining, the position of one end, away from the lathe, of the workpiece is limited by the clamping block 22 when the workpiece rotates, the jumping amplitude of the workpiece is reduced, the influence on the workpiece machined by the lathe is reduced, and the precision of the machined workpiece is not easily influenced.

As shown in fig. 2, since the first rollers 23 are required to abut against the outer wall of the space when the damper mechanism 2 is used, it is difficult to place the workpiece between the three first rollers 23. Therefore, the damping seat 21 is connected with a driving mechanism 3 for driving the clamping block 22 to approach or leave away from a workpiece, the driving mechanism 3 comprises three connecting rods 31 hinged to the damping seat 21, driving rods 32 hinged to the three connecting rods 31, springs 33 for driving the driving rods 32 to move towards the direction away from the lathe, and abutting blocks 34 fixed with the frame 1, a waist-shaped groove 311 penetrates through the side wall of each connecting rod 31 along the length direction of the connecting rod, and the damping seat 21 and the hinge shaft of the connecting rod 31 slide in the waist-shaped groove 311. Three connecting rods 31 are all arranged in mounting groove 211 and are in contact with the inner wall of mounting groove 211, connecting rod 31 is arranged around the axis of mounting groove 211, and one end of connecting rod 31 is welded with the end face of clamping block 22 far away from first roller 23, the other end of connecting rod 31 is hinged with one end of driving rod 32 arranged in mounting groove 211, and the end of connecting rod 31 connected with driving rod 32 inclines towards the axis of mounting groove 211. The driving rod 32 penetrates through the shock absorption seat 21 and is connected with the shock absorption seat 21 in a sliding mode, the axis of the driving rod coincides with the axis of the installation groove 211, the driving rod is located on one side, away from the lathe, of the clamping block 22, and one end, away from the shock absorption seat 21, of the driving rod is connected with the fixing block 321 in a threaded mode. The spring 33 is sleeved on one end of the driving rod 32 extending out of the damper base 21, one end of the spring abuts against the end face of the damper base 21 far away from the lathe, and the other end of the spring abuts against the end face of the fixing block 321 facing the damper base 21. The abutting block 34 is fixed on the upper end face of the machine frame 1 by using a bolt, and is positioned on one side of the shock absorption seat 21 away from the lathe, when the shock absorption mechanism 2 does not limit the position of the workpiece, the driving rod 32 abuts against the abutting block 34, the spring 33 is in a contraction state, and the three first rollers 23 are away from each other. Before the workpiece is placed in the mounting groove 211, the driving rod 32 is abutted to the abutting block 34 so as to enable the three rollers to be far away, the workpiece can be directly placed in the mounting groove 211 at the moment, only the oil cylinder 24 pushes the shock absorption seat 21 to move towards the lathe, the spring 33 applies elastic force far away from the lathe to the driving rod 32 so as to move towards the direction far away from the lathe, and the three first rollers 23 are driven to mutually approach so as to determine the position of the workpiece.

As shown in fig. 3, since the damping mechanism 2 is only positioned at one end of the workpiece far away from the lathe, and the length of the workpiece is long, the middle part of the workpiece bends downwards, and the bending part vibrates when the workpiece rotates, thereby affecting the rotation of the lathe spindle. Therefore, the upper end of the frame 1 is connected with the supporting mechanism 4 at the middle position of the workpiece, the supporting mechanism 4 comprises a supporting seat 41 connected with the frame 1 and two second rollers 42 rotatably connected with the upper end of the supporting seat 41, the axes of the two second rollers 42 are parallel to the axis of the lathe spindle, and the side walls of the two second rollers 42 are simultaneously abutted against the side walls of the workpiece. The middle position of the workpiece is supported by the supporting mechanism 4, so that the workpiece cannot bend downwards under the action of gravity, the vibration generated by the workpiece is reduced during rotation, and the rotation of the spindle of the lathe is not easily influenced.

As shown in fig. 3, since the workpiece is continuously moved toward the lathe during the machining process, the position of the support mechanism 4 is not changed, so that the damping mechanism 2 can block the movement of the damping mount 21 when pushing the workpiece to move toward the lathe. Therefore, the lower end of the supporting seat 41 is arranged in the damping groove 11 to slide, the end surface of the damping seat 21 close to the lathe is connected with the guide rod 25 which is horizontally arranged by using a bolt, and one end of the guide rod 25 far away from the damping seat 21 is connected with the supporting seat 41 and is a multi-section telescopic rod. At this time, when the workpiece moves toward the lathe, the support base 41 is pushed toward the lathe so that the support base 41 does not obstruct the movement of the damper base 21, and the support base 41 can be returned to the original position by the guide rod 25.

As shown in fig. 3, the workpiece may jump due to the fast rotation speed during the processing of the workpiece. Therefore, the upper end of the supporting seat 41 is hinged with a pressing rod 43 for pressing the workpiece, and one end of the pressing rod 43, which is far away from the hinged point, is abutted against the upper end of the workpiece. The compressing rod 43 is connected with a torsion spring 45 which drives the compressing rod to rotate downwards, one end of the torsion spring 45 is abutted against the upper end of the supporting seat 41, and the other end of the torsion spring is abutted against the compressing rod 43. The pressing rod 43 is used for applying downward pressure to the workpiece, so that the workpiece is not easy to be separated from the second roller 42 in the rotating process, the workpiece is not easy to jump in the rotating process, and the influence on the rotation of the lathe spindle is reduced.

As shown in fig. 3, the workpiece may continuously rub against the lower end surface of the pressing rod 43 during the rotation process, which may aggravate the wear of the pressing rod 43, thereby affecting the pressing effect of the pressing rod 43 on the workpiece. Therefore, the end of the pressing rod 43 away from the supporting seat 41 is rotatably connected with a third roller 44, the axis of the third roller 44 is parallel to the hinge axis of the pressing rod 43, and the side wall of the third roller 44 abuts against the side wall of the workpiece. The third roller 44 is used for converting the sliding friction between the pressing rod 43 and the workpiece into rolling friction, so that the friction between the workpiece and the pressing rod 43 is reduced, the abrasion of the pressing rod 43 is reduced, and the pressing effect of the pressing rod 43 on the workpiece is not easily influenced.

As shown in fig. 3, since it is necessary to manually rotate the pressing lever 43 upward when placing the workpiece on the two second rollers 42, it is troublesome at this time. Therefore, the end surface of the support base 41 close to the lathe is provided with a connecting groove 411, the upper end of the support base 41 is penetrated with a push rod 46 for pushing the pressing rod 43 to move upwards, the lower end of the push rod 46 is arranged in the connecting groove 411, and the upper end of the push rod is abutted against the lower end of the pressing rod 43. The one end that shock mount 21 was kept away from to guide bar 25 passes supporting seat 41 and stretches out in the spread groove 411, and guide bar 25 slides with supporting seat 41 and is connected, and it uses bolted connection to be located the lateral wall upper end in spread groove 411 and drives catch bar 46 rebound's drive block 26, and wedge 261 has been seted up to drive block 26 upper end, and wedge 261 is close to the one end downward sloping of shock mount 21, wedge 261 and catch bar 46 lower extreme butt. The end face of the support seat 41 far away from the shock absorption seat 21 is connected with a limit block 47 for closing the opening of the connecting groove 411 by using a bolt, and one end of the guide rod 25 far away from the shock absorption seat 21 can be abutted against the end face of the limit block 47 near the support seat 41. Frame 1 upper end uses bolted connection to have the locating piece 12 of restriction supporting seat 41 removal, when the one end that shock mount 21 was kept away from to locating piece 12 and supporting seat 41 were close to the one end butt of shock mount 21, guide bar 25 was in tensile state, and ascending thrust is applyed to catch bar 46 to drive block 26 this moment, utilizes catch bar 46 to drive compressing tightly pole 43 rebound, can directly place the work piece this moment between two second gyro wheels 42, no longer need the manual work with compressing tightly pole 43 upward rotation.

As shown in fig. 3, when the support seat 41 and the positioning block 12 contact each other, the support seat 41 may collide with each other, so that the positioning block 12 may be deformed to affect the restriction of the support seat 41. Therefore, the end face of the positioning block 12 close to the supporting seat 41 is adhered with the cushion pad 13, and the cushion pad 13 is made of rubber and is abutted against the side wall of the supporting seat 41. The impact between the support seat 41 and the positioning block 12 is reduced by the cushion pad 13, so that the probability of deformation of the positioning block 12 is reduced.

The working principle is as follows:

the workpiece is placed on the upper ends of the two second rollers 42, the third roller 44 is pressed against the upper end of the workpiece, and the end of the workpiece remote from the lathe is placed between the three first rollers 23. The cylinder 24 then pushes the shock mount 21 toward the lathe and pushes the support base 41 toward the lathe when the guide rod 25 is in the contracted state. After the feeding is finished, the oil cylinder 24 drives the shock absorption seat 21 to move towards the direction away from the lathe, at the moment, the guide rod 25 continuously extends, and when the guide rod 25 completely extends, the support seat 41 is driven to move towards the direction away from the lathe. When the support seat 41 abuts against the positioning block 12, the guide rod 25 continues to move in a direction away from the lathe, and the wedge-shaped surface 261 applies upward thrust to the push rod 46, so that the push rod 46 drives the pressing rod 43 to rotate upward. When the pushing rod 46 rotates upward, the abutting block 34 applies a pushing force to the driving rod 32 toward the lathe, so that the driving rod 32 moves toward the lathe, thereby moving the end of the connecting rod 31 connected with the clamping block 22 toward a direction away from the axis of the mounting groove 211, and at this time, placing one end of the workpiece in the mounting groove 211.

The specific embodiments are only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a material feeding unit of high accuracy lathe, is including setting up in frame (1) of lathe headstock one side, its characterized in that: the lathe is characterized in that the rack (1) is connected with a damping mechanism (2) for limiting the position of one end, away from the lathe, of a workpiece, the damping mechanism (2) comprises a damping seat (21) connected with the rack (1) in a sliding manner, a plurality of clamping blocks (22) for clamping the workpiece, a plurality of first rollers (23) respectively connected with the clamping blocks (22) in a rotating manner and an oil cylinder (24) for driving the damping seat (21) to move, a damping groove (11) parallel to a lathe spindle is formed in the upper end of the rack (1), the lower end of the damping seat (21) is arranged in the damping groove (11) in a sliding manner, an installation groove (211) coaxial with the lathe spindle is formed in the end face, close to the lathe, of the damping seat (21), the clamping block (22) is arranged in the installation groove (211), the end face, close to the axis of the installation groove (211), of the clamping block (22) is rotatably connected with the first rollers (23), the first roller (23) clamps a workpiece together, a cylinder body of the oil cylinder (24) is fixedly connected with the rack (1), and a piston rod of the oil cylinder (24) is connected with the shock absorption seat (21).

2. The feeding device of the high-precision lathe according to claim 1, wherein: the damping seat (21) is connected with a driving mechanism (3) which drives the clamping block (22) to be close to or far away from a workpiece, the driving mechanism (3) comprises a plurality of connecting rods (31) hinged with the damping seat (21), a driving rod (32) hinged with the connecting rods (31) at the same time, a spring (33) which drives the driving rod (32) to move towards the direction far away from the damping seat (21) and a butting block (34) fixed with the frame (1), a waist-shaped groove (311) penetrates through the side wall of the connecting rod (31), a hinging shaft of the damping seat (21) and the connecting rod (31) slides in the waist-shaped groove (311), one end of the connecting rod (31) is fixed with the end face of the clamping block (22) far away from the axis of the mounting groove (211), the other end of the connecting rod (31) is hinged with the driving rod (32) at the same time, one end of the connecting rod (31) hinged with the driving rod (32, the axis of actuating lever (32) and the axis coincidence of mounting groove (211) and its one end that passes shock mount (21) and keep away from mounting groove (211), spring (33) cup joint in actuating lever (32) and stretch out the one end of shock mount (21), the one end of spring (33) and shock mount (21) keep away from the one end butt of mounting groove (211), the other end of spring (33) and actuating lever (32) are kept away from the one end of shock mount (21) and are fixed, work as damper (2) do not limit the time to the work piece, actuating lever (32) and butt piece (34) butt and spring (33) are in the contraction state, and are a plurality of first gyro wheel (23) are kept away from each other.

3. The feeding device of a high-precision lathe according to claim 2, wherein: the lathe is characterized in that the rack (1) is connected with a supporting mechanism (4) for supporting a workpiece, the supporting mechanism (4) comprises a supporting seat (41) connected with the rack (1) and two second rollers (42) rotatably connected to the upper end of the supporting seat (41), the side walls of the two second rollers (42) are simultaneously abutted to the side wall of the workpiece, and the axis of the second rollers (42) is parallel to the axis of a lathe spindle.

4. The feeding device of a high-precision lathe according to claim 3, wherein: the end face of the shock absorption seat (21) close to the lathe is fixedly connected with a guide rod (25), the other end of the guide rod (25) is connected with a supporting seat (41), the supporting seat (41) is arranged in the shock absorption groove (11) to slide, and the guide rod (25) is a telescopic rod.

5. The feeding device of the high-precision lathe according to claim 4, wherein: the articulated pole (43) that compresses tightly of supporting seat (41) upper end, compress tightly pole (43) and be connected with the work piece upper end, compress tightly pole (43) and be connected with its pivoted torsional spring (45) downwards of drive, the one end and the supporting seat (41) of torsional spring (45) are connected, the other end and the pole (43) that compresses tightly of torsional spring (45) are connected.

6. The feeding device of the high-precision lathe according to claim 5, wherein: one end, far away from the supporting seat (41), of the pressing rod (43) is rotatably connected with a third roller (44), the side wall of the third roller (44) is abutted against the upper end of a workpiece, and the axis of the third roller (44) is parallel to the lathe spindle.

7. The feeding device of the high-precision lathe according to claim 6, wherein: guide bar (25) pass supporting seat (41) and its and supporting seat (41) and slide and be connected, the terminal surface fixedly connected with stopper (47) of shock attenuation seat (21) are kept away from in supporting seat (41), the one end and stopper (47) butt of shock attenuation seat (21) are kept away from in guide bar (25), drive compressing rod (43) pivoted catch bar (46) are worn to be equipped with to supporting seat (41) upper end, fixedly connected with drive catch bar (46) rebound's drive block (26) in guide bar (25) upper end, wedge (261) have been seted up to drive block (26) upper end, the one end downward sloping that shock attenuation seat (21) are close to in wedge (261), wedge (261) and catch bar (46) lower extreme butt, frame (1) fixedly connected with restricts locating piece (12) that supporting seat (41) removed, the one end that shock attenuation seat (21) were kept away from in locating piece (12) and supporting seat (41) are close to the terminal surface of shock attenuation seat (21) And when the positioning block (12) is abutted to the supporting seat (41), the wedge-shaped surface (261) is abutted to the lower end of the push rod (46), the upper end of the push rod (46) is abutted to the lower end of the pressing rod (43), and the third roller (44) moves towards the direction away from the supporting seat (41).

8. The feeding device of a high-precision lathe according to claim 7, wherein: the end face of the positioning block (12) close to the supporting seat (41) is fixedly connected with a cushion pad (13), and the cushion pad (13) is abutted against the side wall of the supporting seat (41).