CN216298784U

CN216298784U - High-precision numerical control vertical double-end-face grinding machine

Info

Publication number: CN216298784U
Application number: CN202122517465.2U
Authority: CN
Inventors: 饶钦萍
Original assignee: Deqing Qinlong Grinder Manufacturing Co ltd
Current assignee: Deqing Qinlong Grinder Manufacturing Co ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-04-15
Anticipated expiration: 2031-10-18

Abstract

The utility model provides a high-precision numerical control vertical double-end-surface grinding machine, and belongs to the technical field of grinding machine tools. The grinding assembly comprises a grinding head, the grinding head is connected with a grinding head frame through a grinding head rotating mechanism, the grinding head frame is connected with a rack through a lifting mechanism, an XY moving mechanism is arranged on one side of the rack and on a base, at least one workpiece mounting seat is arranged on the XY moving mechanism and is connected with a workpiece rotation driving assembly, the two grinding assemblies are respectively arranged on an upper stand column and a lower stand column, and the grinding head rotating mechanism comprises an electric main shaft and a grinding head arranged on the output end of the electric main shaft. The movable working table can be moved through the XY moving mechanism, so that when one workpiece arranged on the workpiece mounting seat is ground, the other workpiece mounting seat is loaded, the time for replacing a new workpiece to be ground is saved, and the machining efficiency of the workpiece is accelerated.

Description

High-precision numerical control vertical double-end-face grinding machine

Technical Field

The utility model belongs to the technical field of grinding machine tools, and relates to a high-precision numerical control vertical double-end-surface grinding machine.

Background

In the eighteenth century, grinding machines were developed which could grind parts such as timepieces and sewing machines in order to quickly process these parts. The grinding machine is formed by additionally arranging the grinding head on the existing machine tools such as a lathe, a planer and the like, and the grinding machine is simple in structure, easy to vibrate during grinding and low in rigidity of the grinding head. With the progress of the technology, the grinding machine is more and more precise in working and wider in application range, and even materials with higher brittleness, such as glass, granite and the like, can be finely processed by the grinding machine. In the prior art, after a workpiece needs to be polished, the operation of a machine tool is stopped. When the machine tool is suspended from running, a new workpiece to be polished is replaced, and time and labor are consumed in the operation process. In addition, because the rotating speed of the grinding tool is high in the process of grinding the workpiece, the thickness of the ground workpiece is difficult to control to be the same, and an operator needs to have high skills to grind the precise workpiece.

Disclosure of Invention

The utility model aims to solve the problems and provides a high-precision numerical control vertical double-ended grinding machine.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a high-precision numerical control vertical double-end-face grinding machine comprises a base frame, wherein a machine frame is arranged on the base frame, two grinding assemblies which are symmetrically arranged up and down are arranged on the machine frame, each grinding assembly comprises a grinding head, the grinding head is connected with a grinding head frame through a grinding head rotating mechanism, the grinding head frame is connected with the machine frame through a lifting mechanism, an XY moving mechanism is arranged on one side of the machine frame and is arranged on one side of the machine frame, at least one workpiece mounting seat is arranged on the XY moving mechanism and is connected with a workpiece rotating driving assembly, the machine frame comprises an upper stand column and a lower stand column, the two grinding assemblies are respectively arranged on the upper stand column and the lower stand column, the upper stand column and the lower stand column are connected through a first detachable structure, the lower stand column is connected with the base frame through a second detachable structure, and the grinding head rotating mechanism comprises an electric spindle arranged on the grinding head frame, the output end of the electric spindle is provided with the grinding head.

In the high-precision numerical control vertical double-ended grinding machine, the grinding head comprises grinding wheel flanges, a grinding wheel is mounted on the grinding wheel flanges, the grinding wheel flanges are fixed on the output end of the electric spindle, a grinding fluid nozzle is arranged between the two grinding wheel flanges and connected with the fluid delivery mechanism through a fluid delivery pipe, the fluid delivery pipe penetrates through one of the electric spindles, and the outer end of the fluid delivery pipe is connected with the grinding head frame through a fluid delivery pipe fixing seat.

In the high-precision numerical control vertical double-ended grinding machine, the lifting mechanism comprises guide rail pressing plates respectively arranged at two sides of the grinding head frame, a lifting slide way is formed between each guide rail pressing plate and the machine frame, lifting guide rails capable of being matched with the lifting slide ways at the two sides of the grinding head frame are respectively arranged at the two sides of the grinding head frame, and a screw rod lifting assembly is arranged between the grinding head frame and the machine frame.

In the high-precision numerical control vertical double-ended grinding machine, the screw rod lifting assembly comprises a vertically arranged feed screw rod, a feed nut is sleeved on the feed screw rod and fixed on the grinding head frame, two ends of the feed screw rod are respectively connected with the frame through bearing seats, and a worm gear reducer and a feed servo motor are sequentially connected to the outer end of the feed screw rod.

In the high-precision numerical control vertical double-ended grinding machine, the workpiece rotation driving assembly comprises a workpiece rotation shaft arranged below the workpiece mounting seat, the workpiece rotation shaft is arranged on the rotation shaft seat in a penetrating manner, the upper end of the workpiece rotation shaft is fixed on the workpiece mounting seat, and the lower end of the workpiece rotation shaft is connected with a workpiece shaft rotation servo motor through a synchronous belt.

In the high-precision numerical control vertical double-ended grinding machine, a rotary shaft sleeve is arranged between the workpiece rotating shaft and the rotary shaft seat, at least two rotating shaft bearings are arranged between the rotary shaft sleeve and the workpiece rotating shaft, and the rotary shaft sleeve is connected with the rotary shaft seat through a rotating shaft sleeve fixing seat.

In the high-precision numerical control vertical double-ended grinding machine, the XY moving mechanism is provided with two workpiece mounting seats, the two workpiece mounting seats are arranged on the moving workbench, and the moving workbench is connected with the XY moving mechanism.

In the high-precision numerical control vertical double-ended grinding machine, the chassis is sequentially provided with a first slope, a plane section and a second slope from one end to the other end, the first slope and the second slope are gradually inclined downwards from the outer end to the inner end, the first slope is provided with a rack fixing table, the second slope and the plane section are provided with an XY moving mechanism fixing table, the rack is arranged on the rack fixing table, the XY moving mechanism is arranged on the XY moving mechanism fixing table, and a liquid outlet is arranged on one side of the plane section.

Compared with the prior art, the utility model has the advantages that:

the equipment is suitable for parts needing double-sided machining, such as step sheets, friction plates, brake discs and the like. The two grinding assemblies are oppositely arranged to form a grinding station, so that double surfaces of a workpiece to be ground can be conveniently machined simultaneously. The two sides are processed simultaneously, so that on one hand, the whole thickness is the same and the processing precision is high after the workpiece to be polished is polished; on the other hand, the processing efficiency is improved. The movable workbench can move through the XY moving mechanism, so that the feeding of the other workpiece mounting seat is convenient when one workpiece mounted on the workpiece mounting seat is ground, the time for replacing a new workpiece to be ground after the workpiece is ground is saved, and the processing efficiency of the workpiece is accelerated.

The movable workbench can also move through the XY moving mechanism, so that workpieces to be polished at various positions can be conveniently polished in the polishing process.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a side view of the apparatus.

Fig. 3 is a cross-sectional view of the present invention.

Fig. 4 is a partially enlarged view of a in fig. 1.

In the figure: the grinding machine comprises a chassis 1, a frame 2, a grinding component 3, a grinding head 4, a grinding head rotating mechanism 5, a grinding head frame 6, a lifting mechanism 7, an XY moving mechanism 8, a workpiece mounting seat 9, a workpiece rotating driving component 10, an upper upright post 11, a lower upright post 12, an electric spindle 13, a flange 14, a grinding liquid spray head 15, a liquid through pipe 16, a liquid through pipe fixing seat 17, a guide rail pressing plate 18, a grinding wheel 19, a lifting slide way 20, a lifting guide rail 21, a screw rod lifting component 22, a workpiece shaft rotating servo motor 23, a feed screw rod 24, a feed nut 25, a feed servo motor 26, a workpiece rotating shaft 27, a rotating shaft seat 28, a rotating shaft sleeve 29, a rotating shaft bearing 30, a rotating shaft sleeve fixing seat 31, a moving worktable 32, a first slope 33, a plane section 34, a second slope 35, a frame fixing seat 36, an XY moving mechanism fixing seat 37, a liquid outlet 38, a first detachable structure 39, a second detachable structure 40, Side frame 42, first platform 43 and second platform 44, planker 45.

Detailed Description

The present invention is further illustrated by the following specific examples.

As shown in fig. 1 and 2, a high-precision numerical control vertical double-end-face grinding machine comprises a base frame 1, a frame 2 is arranged on the base frame 1, two grinding assemblies 3 which are symmetrically arranged up and down are arranged on the frame 2, each grinding assembly 3 comprises a grinding head 4, each grinding head 4 is connected with a grinding head frame 6 through a grinding head rotating mechanism 5, each grinding head frame 6 is connected with the frame 2 through a lifting mechanism 7, an XY moving mechanism 8 is arranged on one side of the frame 2 on the base frame 1, at least one workpiece mounting seat 9 is arranged on each XY moving mechanism 8, each workpiece mounting seat 9 is connected with a workpiece rotating driving assembly 10, the frame 2 comprises an upper upright post 11 and a lower upright post 12, the two grinding assemblies 3 are respectively arranged on the upper upright post 11 and the lower upright post 12, the upper upright post 11 and the lower upright post 12 are connected through a first detachable structure 39, the lower upright post 12 is connected with the base frame 1 through a second detachable structure 40, the grinding head rotating mechanism 5 comprises an electric spindle 13 arranged on the grinding head frame 6, and the grinding head 4 is arranged on the output end of the electric spindle 13.

In this embodiment, two upper and lower symmetries set up grinding subassembly 3 on frame 2, and two bistriques 4 can open a knife simultaneously from top to bottom, realize that two bistriques 4 polish two upper and lower terminal surfaces of grinding work piece simultaneously. The upper end face and the lower end face of the grinding workpiece are simultaneously machined, so that on one hand, the whole thickness is the same and the machining precision is high after the workpiece to be ground is conveniently controlled to be ground; on the other hand, the processing efficiency is improved. The grinding head frame 6 drives the grinding head 4 to lift through the lifting mechanism 7, and a grinding workpiece can conveniently enter a grinding station. The XY moving mechanism 8 is provided with at least one workpiece mounting seat 9, so that when one workpiece mounted on the workpiece mounting seat 4 is ground, the other workpiece mounting seat 4 is conveniently loaded, the time for replacing a new workpiece to be ground after the workpiece is ground is saved, and the machining efficiency of the workpiece is accelerated.

As shown in fig. 2, an upper upright 11 and a lower upright 12 are stacked on the frame 2 along the vertical direction, one side of each upright close to the workpiece mounting seat 9 is provided with one grinding assembly 3, a grinding station is formed between the two grinding assemblies 3, the two grinding assemblies 3 can feed a workpiece to be ground up and down simultaneously, and simultaneously grind the upper end face and the lower end face of the workpiece to be ground. In addition, a lifting mechanism 7 capable of driving the corresponding grinding assembly 3 to move along the vertical direction is arranged between each grinding assembly 3 and the corresponding upright column. In the embodiment, the electric spindle 13 is adopted to drive the grinding head 4 to rotate, so that the equipment is simple in structure, compact in space, light in weight of the whole machine and small in occupied area.

Preferably, first detachable construction 39 includes that the corresponding position of last stand 11 and lower stand 12 all is provided with the installation screw, through the screw assembly to the installation screw in, realizes the assembly between stand 11 and lower stand 12, and this kind of fixed mode convenient to detach and equipment provide convenience for equipment disassembly back transport. The second detachable structure 40 includes that the corresponding position of stand 12 and chassis 1 all is provided with the assembly screw down, through with the screw assembly to the assembly screw in, realizes the assembly between stand 12 and the chassis 1 down, this kind of fixed mode convenient to detach and equipment, carries after dismantling for equipment and provides convenience.

As shown in fig. 3, preferably, the grinding head 4 includes a grinding wheel flange 14, a grinding wheel 19 is mounted on the grinding wheel flange 14, the grinding wheel flange 14 is fixed on an output end of the electric spindle 13, a grinding fluid nozzle 15 is disposed between the two grinding wheel flanges 14, the grinding fluid nozzle 15 is connected to the fluid delivery mechanism through a fluid conduit 16, the fluid conduit 16 penetrates through one of the electric spindles 13, and an outer end of the fluid conduit 16 is connected to the grinding head frame 6 through a fluid conduit fixing seat 17. The electric main shaft 13 can adopt a water-cooling circulation electric main shaft, and the concrete structure is as follows: a grinding fluid nozzle 15 is arranged between the two grinding wheel flanges 14, a liquid through pipe 16 penetrates through the axial middle of one electric spindle 13, and a liquid feeding mechanism supplies liquid for the grinding fluid nozzle 15 through the liquid through pipe 16. The grinding fluid nozzle 15 is arranged between the two grinding wheel flanges 14, and the liquid through pipe 16 penetrates through the structure in one electric spindle 13, so that the occupied area of the whole machine is reduced, the weight of the whole machine is light, and the equipment is applied to any construction occasion.

As shown in fig. 1, preferably, the lifting mechanism 7 includes guide rail pressing plates 18 respectively disposed at two sides of the grinding head frame 6, a lifting slide 20 is formed between each guide rail pressing plate 18 and the frame 2, lifting guide rails 21 capable of being matched with the lifting slides 20 at two sides of the grinding head frame 6 are respectively disposed at two sides of the grinding head frame 6, and a screw lifting assembly 22 is disposed between the grinding head frame 6 and the frame 2. The guide rail pressing plates 18 on the two sides of the grinding head frame 6 are driven by the screw rod lifting assembly 22 to lift along the lifting slide way 20, so that the two grinding heads 4 can simultaneously grind the upper end surface and the lower end surface of the grinding workpiece.

As shown in fig. 3, preferably, the lead screw lifting assembly 22 includes a vertically arranged feed lead screw 24, a feed nut 25 is sleeved on the feed lead screw 24, the feed nut 25 is fixed on the grinding head frame 6, two ends of the feed lead screw 24 are respectively connected with the frame 2 through bearing seats, and a worm gear reducer and a feed servo motor 26 are sequentially connected to the outer end of the feed lead screw 24. Under the drive of the feed servo motor 26, the upper upright post 11 or the lower upright post 12 is lifted along the feed screw rod 24, so that the grinding head 4 is lifted, on one hand, a workpiece to be ground is conveniently moved into or out of a grinding station, and on the other hand, the grinding angle of the grinding wheel for grinding the workpiece is conveniently adjusted.

As shown in fig. 3 and 4, preferably, the workpiece rotation driving assembly 10 includes a workpiece rotation shaft 27 disposed below the workpiece mounting seat 9, the workpiece rotation shaft 27 is disposed on a rotation shaft seat 28 in a penetrating manner, an upper end of the workpiece rotation shaft 27 is fixed on the workpiece mounting seat 9, and a lower end of the workpiece rotation shaft 27 is connected to the workpiece shaft rotation servo motor 23 through a timing belt. The servo motor 23 and the synchronous belt are adopted to drive the workpiece mounting seat 9 to rotate, so that the surface of the workpiece to be ground, which needs to be polished, is conveniently turned to the grinding wheel 19, and the angular positioning of the workpiece to be ground is completed.

Preferably, a rotating shaft sleeve 29 is arranged between the workpiece rotating shaft 27 and the rotating shaft seat 28, at least two rotating shaft bearings 30 are arranged between the rotating shaft sleeve 29 and the workpiece rotating shaft 27, and the rotating shaft sleeve 29 is connected with the rotating shaft seat 28 through a rotating shaft sleeve fixing seat 31. The fixing of the rotary shaft bearing 30 is achieved by fixing the rotary shaft sleeve 29 to the rotary shaft seat 28 by means of the rotary shaft sleeve holder 31. The rotating shaft bearing 30 arranged between the workpiece rotating shaft 27 and the rotating shaft seat 28 reduces the friction force of the workpiece rotating shaft 27 during rotation, improves the grinding precision and improves the processing efficiency.

Preferably, the rotating shaft seat 28 includes a pair of symmetrically disposed side frames 42, a first platform 43 and a second platform 44 detachably mounted on the two side frames 42, the workpiece mounting seat 9 is disposed above the first platform 43, the rotating shaft sleeve 29 penetrates through the first platform 43, and the workpiece shaft rotating servo motor 23 is disposed on the upper side of the second platform 44. Each workpiece rotation driving assembly 10 is independently provided with a detachable rotation shaft seat, and the first platform 43, the second platform 44 and the side frame 42 are conveniently disassembled and assembled, so that the convenience in disassembling and assembling of equipment is guaranteed, and the carrying is facilitated.

Preferably, the first platform 43 is located at a height not lower than the height of the second platform 44. The first stage 43 is located at a height not lower than that of the second stage 44, the first stage 43 being for mounting the workpiece mount 9, and the second stage 44 being for mounting the workpiece axis rotation servo motor 23.

Preferably, the XY moving mechanism 8 is provided with two workpiece mounting seats 9, the two workpiece mounting seats 9 are both arranged on a moving worktable 32, and the moving worktable 32 is connected with the XY moving mechanism 8. The present embodiment can use a robot to perform the feeding and discharging operations. The XY moving mechanism 8 includes an X-axis moving component and a Y-axis moving component. The X-axis moving mechanism comprises a carriage 45 provided with an X-axis guide rail at the upper side, and the movable worktable 32 is arranged on the X-axis guide rail at the upper side of the carriage 45 in a sliding manner. The upper surface of the carriage 45 is also provided with an X-axis screw rod parallel to the extending direction of the X-axis guide rail, one end of the X-axis screw rod is provided with an X-axis driver, and the lower side of the movable workbench 32 is in threaded connection with the X-axis screw rod. The driver drives the X-axis lead screw to drive the movable workbench 32 to move left and right along the X-axis guide rail, so that when one workpiece arranged on the workpiece mounting seat 9 is ground, the other workpiece mounting seat 9 is loaded, and the time for replacing a new workpiece to be ground after the workpiece is ground is saved. The Y-axis driving component comprises a carriage 45 which is connected to the Y-axis guide rail in a sliding mode, a Y-axis screw rod parallel to the extending direction of the Y-axis guide rail is further arranged on the rack 2, a carriage driver is arranged at one end of the Y-axis screw rod, and the lower side of the carriage 45 is in threaded connection with the Y-axis screw rod. Under the drive of the carriage driver, the carriage 45 is driven by the Y-axis lead screw to move along the Y-axis guide rail, so that the movable workbench 32 can move back and forth, and workpieces to be polished at various positions can be conveniently polished in the polishing process. The carriage 45 and the movable table 32 mentioned in this embodiment are easy to disassemble and assemble, and provide convenience for carrying after the equipment is disassembled.

Preferably, the chassis 1 is provided with a first slope 33, a plane section 34 and a second slope 35 in sequence from one end to the other end, the first slope 33 and the second slope 35 are both inclined downwards gradually from the outer end to the inner end, the first slope 33 is provided with a rack fixing table 36, the second slope 35 and the plane section 34 are provided with an XY moving mechanism fixing table 37, the rack 2 is arranged on the rack fixing table 36, the XY moving mechanism 8 is arranged on the XY moving mechanism fixing table 37, and a liquid outlet 38 is arranged on one side of the plane section 34. During polishing, the grinding fluid nozzle 15 between the two grinding wheel flanges 14 sprays liquid to the polishing part, and the sprayed liquid wets the ground slag to prevent the slag from flying in disorder. The first slope 33, the plane section 34 and the second slope 35 realize the topography with high two sides and low middle of the surface of the chassis 1, and facilitate the liquid to be discharged from the liquid outlet 38 in the middle.

The working process of the embodiment is as follows: (1) the spacing between the grinding assemblies 3 is adjusted by the lifting mechanism 7. After a workpiece to be polished is arranged on the workpiece mounting seat 9, the XY moving mechanism 8 drives the moving workbench 9 to move along the X axis and the Y axis and move into the space between the two oppositely arranged grinding assemblies 3. The grinding assembly 3 is adjusted to the working position by the lifting mechanism 7 and grinding is started. (2) In the grinding process, the other workpiece mount 9 is loaded. (3) In the grinding process, the servo motor 23 and the synchronous belt are adopted to drive the workpiece mounting seat 9 to rotate, the surface needing to be ground is conveniently turned to the grinding wheel 19 through the structure, the workpiece to be ground at each point is guaranteed to be ground, and the grinding degree is positioned. (4) After polishing, the movable worktable 3 is moved left and right to replace a new workpiece to be polished.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. A high-precision numerical control vertical double-end-face grinding machine is characterized by comprising a base frame (1), wherein a rack (2) is arranged on the base frame (1), two grinding assemblies (3) which are symmetrically arranged up and down are arranged on the rack (2), each grinding assembly (3) comprises a grinding head (4), each grinding head (4) is connected with a grinding head frame (6) through a grinding head rotating mechanism (5), each grinding head frame (6) is connected with the rack (2) through a lifting mechanism (7), an XY moving mechanism (8) is arranged on one side of the rack (2) and is provided with at least one workpiece mounting seat (9) on the XY moving mechanism (8), each workpiece mounting seat (9) is connected with a workpiece rotating driving assembly (10), each rack (2) comprises an upper stand column (11) and a lower stand column (12), and the two grinding assemblies (3) are respectively arranged on the upper stand column (11) and the lower stand column (12), the grinding head device is characterized in that the upper upright post (11) is connected with the lower upright post (12) through a first detachable structure (39), the lower upright post (12) is connected with the base frame (1) through a second detachable structure (40), the grinding head rotating mechanism (5) comprises an electric spindle (13) installed on a grinding head frame (6), and the output end of the electric spindle (13) is provided with the grinding head (4).

2. A high-precision numerical control vertical double-ended grinding machine according to claim 1, characterized in that the grinding head (4) comprises grinding wheel flanges (14), a grinding wheel (19) is mounted on the grinding wheel flanges (14), the grinding wheel flanges (14) are fixed on the output ends of the electric spindles (13), a grinding fluid nozzle (15) is arranged between the two grinding wheel flanges (14), the grinding fluid nozzle (15) is connected with the fluid delivery mechanism through a fluid delivery pipe (16), the fluid delivery pipe (16) penetrates through one of the electric spindles (13), and the outer ends of the fluid delivery pipe (16) are connected with the grinding head frame (6) through a fluid delivery pipe fixing seat (17).

3. A high-precision numerical control vertical double-ended grinding machine according to claim 1 or 2, wherein the lifting mechanism (7) comprises guide rail pressing plates (18) respectively arranged at two sides of the grinding head frame (6), a lifting slideway (20) is formed between each guide rail pressing plate (18) and the machine frame (2), lifting guide rails (21) capable of being matched with the lifting slideways (20) at the two sides of the grinding head frame (6) are respectively arranged at the two sides of the grinding head frame (6), and a screw rod lifting assembly (22) is arranged between the grinding head frame (6) and the machine frame (2).

4. The high-precision numerical control vertical double-ended grinding machine according to claim 3 is characterized in that the lead screw lifting assembly (22) comprises a vertically arranged feed lead screw (24), a feed nut (25) is sleeved on the feed lead screw (24), the feed nut (25) is fixed on the grinding head frame (6), two ends of the feed lead screw (24) are respectively connected with the frame (2) through bearing seats, and the outer end of the feed lead screw (24) is sequentially connected with a worm gear reducer and a feed servo motor (26).

5. The high-precision numerical control vertical double-ended grinding machine according to claim 1 or 2, wherein the workpiece rotation driving assembly (10) comprises a workpiece rotation shaft (27) arranged below the workpiece mounting seat (9), the workpiece rotation shaft (27) is arranged on a rotation shaft seat (28) in a penetrating manner, the upper end of the workpiece rotation shaft (27) is fixed on the workpiece mounting seat (9), and the lower end of the workpiece rotation shaft is connected with a workpiece shaft rotation servo motor (23) through a synchronous belt.

6. A high-precision numerically-controlled vertical double-ended grinding machine according to claim 5, wherein a rotary sleeve (29) is provided between the workpiece rotating shaft (27) and the rotary shaft seat (28), at least two rotary shaft bearings (30) are provided between the rotary sleeve (29) and the workpiece rotating shaft (27), and the rotary sleeve (29) is connected to the rotary shaft seat (28) through a rotary sleeve fixing seat (31).

7. The high-precision numerical control vertical double-ended grinding machine according to claim 6, wherein the rotary shaft seat (28) comprises a pair of side frames (42) which are symmetrically arranged, a first platform (43) and a second platform (44) which are detachably mounted on the two side frames (42), the workpiece mounting seat (9) is arranged above the first platform (43), the rotary shaft sleeve (29) penetrates through the first platform (43), and a workpiece shaft rotation servo motor (23) is arranged on the upper side of the second platform (44).

8. A high precision numerically controlled vertical double-ended grinding machine according to claim 7, wherein the first table (43) is located at a height not lower than the height at which the second table (44) is located.

9. A high-precision numerical control vertical double-ended grinding machine according to claim 1 or 2, wherein the XY moving mechanism (8) is provided with two workpiece mounting seats (9), both workpiece mounting seats (9) are provided on a moving table (32), and the moving table (32) is connected with the XY moving mechanism (8).

10. The high-precision numerical control vertical double-ended grinding machine according to claim 1 or 2, characterized in that a first slope (33), a plane section (34) and a second slope (35) are sequentially arranged from one end to the other end of the base frame (1), the first slope (33) and the second slope (35) are both gradually inclined downwards from the outer end to the inner end, a frame fixing table (36) is arranged on the first slope (33), an XY moving mechanism fixing table (37) is arranged on the second slope (35) and the plane section (34), the frame (2) is arranged on the frame fixing table (36), the XY moving mechanism (8) is arranged on the XY moving mechanism fixing table (37), and a liquid outlet (38) is arranged on one side of the plane section (34).