CN113910015B

CN113910015B - High-precision screw outer circle polishing machine

Info

Publication number: CN113910015B
Application number: CN202111157644.8A
Authority: CN
Inventors: 王爱东; 王佩文
Original assignee: Yancheng Sikeda Machinery Technology Co ltd
Current assignee: Yancheng Sikeda Machinery Technology Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-10-18
Anticipated expiration: 2041-09-30
Also published as: CN113910015A

Abstract

The invention relates to the technical field of polishing machines, in particular to a high-precision screw outer circle polishing machine which comprises a supporting seat, wherein a clamping seat is fixedly connected to the front side of the upper end of the supporting seat, an upper-layer mounting seat is embedded and installed on the inner side of the clamping seat, a middle-layer mounting seat is installed below the upper-layer mounting seat, a bottom-layer mounting seat is arranged on a bottom plate of the middle-layer mounting seat, and a mounting table is embedded and installed inside the bottom-layer mounting seat. The upper layer mounting seat is arranged on the uppermost layer, the upper layer mounting seat, the middle layer mounting seat and the bottom layer mounting seat are mutually overlapped and placed together, the whole working space is changed from the transverse direction to the longitudinal direction, meanwhile, the arrangement is also favorable for completing the transmission of a screw rod by matching with gravity, the loss of consumables on a transmission mechanism is reduced, and in addition, a roll shaft rod vertically penetrates through the upper layer mounting seat, the middle layer mounting seat and the bottom layer mounting seat and is in rotary connection with the upper layer mounting seat, the middle layer mounting seat and the bottom layer mounting seat.

Description

High-precision screw rod excircle polishing machine

Technical Field

The invention relates to the technical field of polishing machines, in particular to a high-precision screw outer circle polishing machine.

Background

The burnishing machine is one of the equipment that present apparatus production process must be used, come to polish the surface of part through using the burnishing machine, let the more smooth level and smooth of surface of part, make the whole quality of part better, according to the polish to the different positions of part, also divided into several kinds of good types with the burnishing machine, wherein, excircle burnishing machine is one of them kind, the screw rod belongs to an important indispensable class part in the spare part, the screw rod is in the production process, need utilize the excircle burnishing machine to come the surface of screw rod to polish, make the screw rod can accord with the standard of plant use.

The existing external circle polishing machine is used for moving a screw rod by placing the screw rod on a transmission device, and is contacted with a grinding wheel in the moving process to finish polishing.

However, present external circle polishing machine is in the use, and whole area is great, and equipment length is longer for area is great, and in addition, the suitability is relatively poor, can not fix a position the installation according to the length size of screw flexibly.

Disclosure of Invention

The invention aims to provide a high-precision screw outer circle polishing machine.

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

the utility model provides a high accuracy screw rod excircle burnishing machine, includes the supporting seat, the upper end front side fixedly connected with cassette of supporting seat, and the inboard gomphosis of cassette installs upper mount pad, the middle level mount pad is installed to the below of upper mount pad, and the bottom plate of middle level mount pad is provided with the bottom mount pad, the inside gomphosis of bottom mount pad is provided with the mount table, the roller shaft pole has vertically been interlude on the axis of upper mount pad, and the outside of roller shaft has cup jointed the axle sleeve, the constant head tank has been seted up on the surface of upper mount pad, and the inside gomphosis of constant head tank settles and have grinding device, the outer fringe of middle level mount pad vertically is provided with connecting screw, the surface of axle sleeve is connected with places the draw-in groove, and places the inner wall gomphosis of draw-in groove and install the guide arm, grinding device's left side inside is provided with the fixing base, and one side surface mounting of fixing base has the wheel of polishing, the top of wheel is connected with driving motor, the inside of grinding device is provided with the positioning seat, and the inside arrangement of positioning seat has the screw rod body, the inner wall of positioning seat is installed the transmission lead screw, the inside of middle level mount pad is provided with the slide, and the bottom mount pad, the axis of the axle sleeve is all located the center shaft axis and the bottom mount pad and the axis of bottom mount pad is connected with the bottom mount pad, and the axle center shaft axis of bottom mount pad, and the bottom mount pad, and all constitute from the central shaft axis of bottom mount pad.

Preferably, the surface of mount table is including cover seat, magnetism axis of rotation, motorized spindle, link, dull polish cover, thread groove, diamond sand grain and hydraulic lifting rod of inhaling, and movable mounting has magnetism to inhale the pivot in the middle of the inside of cover seat, run through on the axis of cover seat and install motorized spindle, and motorized spindle's inside is provided with hydraulic lifting rod, the link has been cup jointed in the outside of hydraulic lifting rod, the inside interlude of one end of link installs the dull polish cover, and the thread groove has been seted up to the inner wall of dull polish cover.

Preferably, the sanding sleeve is annularly distributed about the vertical center line of the motor rotating shaft, and the outer diameter of the sanding sleeve is matched with the inner diameter of the sleeve seat.

Preferably, the thread groove is spirally distributed in the sanding sleeve, and the diamond sand grains are uniformly distributed on the surface of the thread groove.

Preferably, the surface of guide arm is including connecting block, holder, coupling spring, end section of thick bamboo and rubber buffer, and the front side surface integration of connecting block is connected with the holder, the inside top of guide arm is connected with coupling spring, and the bottom of guide arm is provided with the rubber buffer, an end section of thick bamboo is installed in the outside of rubber buffer.

Preferably, the vertical central line of the guide rod and the vertical central line of the bottom barrel are overlapped, and the outer structure of the bottom barrel is wide at the top and narrow at the bottom.

Preferably, the surface of the transmission screw rod comprises an active transmission device, a loop bar, a supporting wheel, a loop plate and a ruler plate, the loop bar is sleeved below the active transmission device, the supporting wheel is installed on the inner side of the loop bar, the loop plate is installed on the rear side of the loop bar, and the ruler plate is inserted in the loop plate.

Preferably, the sleeve plate and the ruler plate are in sliding connection, and the sleeve rods are provided with two groups along the vertical direction of the transmission screw rod.

The invention has at least the following beneficial effects:

1. the upper-layer mounting seat is positioned on the uppermost layer, the upper-layer mounting seat, the middle-layer mounting seat and the bottom-layer mounting seat are mutually overlapped and placed together, the whole working space is changed from the transverse direction to the longitudinal direction, and meanwhile, the arrangement is also favorable for matching with gravity to finish the transmission of the screw rod and reducing the loss of consumable materials on a transmission mechanism;

2. the motor-driven rotating shaft is connected with the sanding sleeve through the connecting frame, the sanding sleeve installed at one end of the connecting frame and one end of the connecting frame can be rotated by utilizing the rotation of the motor-driven rotating shaft, the angle adjustment is carried out, the flexibility of the sanding sleeve is improved, meanwhile, a hydraulic lifting rod is arranged in the motor-driven rotating shaft, the connection height of the outer side can be adjusted, a sleeve seat can be arranged to place a screw rod which is transferred from the upper side, the sanding sleeve can be arranged to polish the surface of the screw rod again, in addition, the sleeve seat can be arranged to position the screw rod, the sanding sleeve is conveniently sleeved on the outer side of the screw rod, a magnetic attraction mechanism is arranged on the surface of the magnetic attraction rotating shaft, the screw rod can be accurately positioned in the sleeve seat, the screw rod can be kept vertical to the magnetic attraction rotating shaft under the action of the magnetic force direction, and the accuracy of the sanding sleeve installed on the outer side of the screw rod is improved;

3. the arrangement of the thread groove can ensure that the surface of the grinding sleeve is more attached to the thread structure on the surface of the screw rod, the precision of the grinding sleeve for grinding the screw rod is improved, high-density diamond sand grains are distributed on the inner wall of the grinding sleeve, the hardness of the diamond sand grains is high, the grinding effect is good, the loss is less, when the density of the diamond sand grains reaches a sufficient value, the high-density grinding can be carried out on the surface of the screw rod, and the surface of the screw rod is more smooth;

4. through the arrangement of the guide rod, the screw rod can be placed on the clamping seat for transmission and conveying, the screw rod can accurately enter the interior of the polishing device, the guide rod and the lower end bottom barrel are mutually sleeved and connected to form an integrated structure, through the arrangement of the rubber plug, air pressure can be generated with an internal cavity of the bottom barrel, slow descending of the guide rod is facilitated, the falling speed is prevented from being too fast, the screw rod is influenced to enter the polishing device, the upper part of the bottom barrel is wide, the guide rod and the rubber plug can naturally descend at the upper end of the bottom barrel, but the inner diameter of the bottom barrel is smaller along with descending, the descending speed of the rubber plug is limited, air can quickly descend inside the bottom barrel due to previous quick descending, the air pressure at the bottom inside of the bottom barrel is increased along with continuous descending of the rubber plug, and further the descending speed of the rubber plug is reduced;

5. initiative transmission's setting, can with mutually support between the lead screw, and impel the loop bar under the cooperation of lead screw, and then realize carrying out the transmission to the screw through the removal to the loop bar, install the support riding wheel in the front side of loop bar, support the riding wheel and carry out the bearing to the screw rod body of installing on the positioning seat, and can utilize the A sliding connection between lagging and the chi board, can adjust the interval of two sets of loop bars along the chi board, thereby be favorable to using not unidimensional screw rod body, the inner wall surface of lagging is more crude, and the surface design of chi board becomes the frosting, so the lagging slides with the chi board mutually supporting, contact surface is all more crude between the two simultaneously, therefore, frictional force also can increase, the loop bar can not follow the chi board easily and slide like this.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the bushing structure of the present invention;

FIG. 3 is a schematic view of a guide bar structure of the present invention;

FIG. 4 is a schematic view of an internal exploded structure of the polishing device of the present invention;

FIG. 5 is a schematic structural view of a drive screw of the present invention;

FIG. 6 is a schematic view of the inner structure of the middle layer mounting base of the present invention;

FIG. 7 is a schematic view of the structure of the mounting table of the present invention;

fig. 8 is a schematic view of the internal cross-sectional configuration of the sanding cover of the present invention.

In the figure: 1. a supporting seat; 2. a card holder; 3. an upper layer mounting base; 4. a middle layer mounting base; 5. a bottom layer mounting base; 6. an installation table; 601. a sleeve seat; 602. a rotating shaft is magnetically attracted; 603. a motorized rotating shaft; 604. a connecting frame; 605. a frosted sleeve; 606. a thread groove; 607. diamond sand grains; 608. a hydraulic lifting rod; 7. a roll shaft lever; 8. a shaft sleeve; 9. positioning a groove; 10. a polishing device; 11. connecting a screw rod; 12. placing a clamping groove; 13. a guide bar; 1301. connecting blocks; 1302. a holder; 1303. a connecting spring; 1304. a bottom cylinder; 1305. a rubber plug; 14. a fixed seat; 15. grinding the wheel; 16. a drive motor; 17. positioning seats; 18. a screw body; 19. a transmission screw rod; 1901. an active transmission; 1902. a loop bar; 1903. supporting the riding wheel; 1904. sheathing the board; 1905. a ruler plate; 20. a slide plate; 21. a chute.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-8, a high-precision screw outer circle polishing machine comprises a supporting seat 1, a clamping seat 2 is fixedly connected to the front side of the upper end of the supporting seat 1, an upper layer installation seat 3 is installed on the inner side of the clamping seat 2 in an embedded mode, a middle layer installation seat 4 is installed below the upper layer installation seat 3, a bottom layer installation seat 5 is arranged on the bottom plate of the middle layer installation seat 4, an installation table 6 is installed on the inner portion of the bottom layer installation seat 5 in an embedded mode, a roller shaft rod 7 is vertically inserted into the central axis of the upper layer installation seat 3 in a penetrating mode, a shaft sleeve 8 is sleeved on the outer side of the roller shaft rod 7, a positioning groove 9 is formed in the surface of the upper layer installation seat 3, a polishing device 10 is installed in the inner portion of the positioning groove 9 in an embedded mode, a connecting screw rod 11 is vertically arranged on the outer edge of the middle layer installation seat 4, a placing clamping groove 12 is connected to the surface of the shaft sleeve 8, a guide rod 13 is installed in an embedded mode on the inner wall of the placing groove 12, a fixing seat 14 is arranged inside the left side of the polishing device 10, a polishing wheel 15 is arranged on the surface of one side of a fixed seat 14, a driving motor 16 is connected to the top of the polishing wheel 15, a positioning seat 17 is arranged inside the right side of the polishing device 10, a screw rod body 18 is arranged inside the positioning seat 17, a transmission screw rod 19 is embedded and installed on the inner wall of the positioning seat 17, a sliding plate 20 is arranged inside the middle layer installation seat 4, a sliding groove 21 is formed in the surface of the sliding plate 20, the upper layer installation seat 3, the middle layer installation seat 4 and the bottom layer installation seat 5 can be supported and installed by arranging a supporting seat 1 and a clamping seat 2, the appearance of the traditional cylindrical polishing machine is changed, the occupied space of the equipment is changed from the transverse direction to the longitudinal direction, the occupied area of the equipment is greatly reduced, the upper layer installation seat 3, the middle layer installation seat 4 and the bottom layer installation seat 5 are all located on the same axis, and a roll rod 7 penetrates through the central axis of the bottom layer installation seat 5 from the central axis of the upper layer installation seat 3, and roll shaft pole 7 and upper mount pad 3, all constitute between middle level mount pad 4 and the bottom mount pad 5 to rotate and be connected, upper mount pad 3 is located the superiors, and superpose each other between upper mount pad 3 and middle level mount pad 4 and the bottom mount pad 5 and place together, change whole workspace into vertically by horizontal, this setting simultaneously, also be favorable to cooperating gravity to accomplish the transmission to the screw rod, reduce the loss of consumptive material on the drive mechanism, in addition, roll shaft pole 7 is vertical to be run through in upper mount pad 3, middle level mount pad 4 and bottom mount pad 5's centre, and constitute simultaneously with the three and rotate and be connected, be favorable to adjusting the rotation between the three like this.

Further, the surface of the mounting table 6 includes a sleeve seat 601, a magnetic rotation shaft 602, a motorized rotation shaft 603, a connecting frame 604, a sanding sleeve 605, a threaded groove 606, diamond sand particles 607 and a hydraulic lifting rod 608, and the magnetic rotation shaft is movably mounted in the middle of the inside of the sleeve seat 601, the motorized rotation shaft 603 is mounted on a central axis of the sleeve seat 601 in a penetrating manner, the hydraulic lifting rod 608 is disposed inside the motorized rotation shaft 603, the connecting frame 604 is sleeved outside the hydraulic lifting rod 608, the sanding sleeve 605 is mounted inside one end of the connecting frame 604 in a penetrating manner, the threaded groove 606 is formed in the inner wall of the sanding sleeve 605, the motorized rotation shaft 603 is connected with the sanding sleeve 605 through the connecting frame 604, the motorized rotation shaft 603 is used for rotating the connecting frame 604 and the sanding sleeve 605 mounted at one end of the connecting frame 604, and performing angle adjustment to improve flexibility of the sanding sleeve, meanwhile, the hydraulic lifting rod 608 is disposed inside the motorized rotation shaft 603, so that the height of the connection outside can be adjusted, and the sleeve seat 601 can place a screw rod transferred from above.

Further, the vertical central line of dull polish cover 605 about motorized spindle 603 is cyclic annular distribution, and the external diameter of dull polish cover 605 is identical with the internal diameter size of cover seat 601, the setting of dull polish cover 605, can polish once more to the surface of screw rod, the setting of cover seat 601 in addition, can fix a position the position of screw rod, make things convenient for dull polish cover 605 to overlap in the outside of screw rod, the mechanism is inhaled to magnetism on the surface of inhaling axis of rotation 602, can let the screw rod pinpoint in the inside of cover seat 601, and under the effect of magnetic force direction, the screw rod can keep perpendicular with magnetism axis of rotation 602, be favorable to improving like this that dull polish cover 605 and install the outside precision at the screw rod.

Further, thread groove 606 becomes the heliciform and distributes in the inside of dull polish cover 605, and diamond sand grain 607 is at the surperficial evenly distributed of thread groove 606, the setting of thread groove 606, can let dull polish cover 605's surface and the more laminating degree of the helicitic texture on screw rod surface, improve the precision when dull polish cover 605 polishes the screw rod, and it has the diamond sand grain 607 of high density to distribute on the inner wall of dull polish cover 605, diamond sand grain 607 hardness is high, it is effectual to polish, the loss is also less, when the density of diamond sand grain 607 reaches sufficient numerical value, can carry out the polishing of high density to the surface of screw rod, let the surface of screw rod level and more smooth.

Further, the surface of guide arm 13 is including connecting block 1301, holder 1302, coupling spring 1303, end section of thick bamboo 1304 and rubber buffer 1305, and the front side surface integration of connecting block 1301 is connected with holder 1302, the inside top of guide arm 13 is connected with coupling spring 1303, and the bottom of guide arm 13 is provided with rubber buffer 1305, end section of thick bamboo 1304 is installed in the outside of rubber buffer 1305, setting through guide arm 13, can place the screw rod on holder 1302 and transmit the transport, let the screw rod accurately get into grinding device 10's inside, cup joint each other between guide arm 13 and the lower extreme end section of thick bamboo 1304, and constitute the integrated structure, setting through rubber buffer 1305, can produce atmospheric pressure with the inside cavity of end section of thick bamboo 1304, be favorable to realizing slowly falling to guide arm 13, avoid falling speed too fast, the screw rod has been influenced and has got into grinding device 10.

Further, the vertical center line of guide arm 13 and the vertical center line of a bottom section of thick bamboo 1304 coincide each other, and the exterior structure of a bottom section of thick bamboo 1304 is wide from top to bottom, the upper portion broad of a bottom section of thick bamboo 1304, guide arm 13 and rubber buffer 1305 can carry out the falling of natural speed in the upper end of a bottom section of thick bamboo 1304, but along with down more, the internal diameter of a bottom section of thick bamboo 1304 is less, the falling speed of rubber buffer 1305 has received the restriction, because the preceding quick falling causes the air to carry out the inside of a bottom section of thick bamboo 1304 fast, and along with the constantly sinking of rubber buffer 1305, the atmospheric pressure of the inside bottom of a bottom section of thick bamboo 1304 increases, and then make the falling speed of rubber buffer 1305 slow down.

Further, the surface of the driving screw 19 includes an active driving device 1901, a sleeve stem 1902, a supporting riding wheel 1903, a sleeve board 1904 and a ruler board 1905, the sleeve stem 1902 is sleeved under the active driving device 1901, the supporting riding wheel 1903 is installed on the inner side of the sleeve stem 1902, the sleeve board 1904 is installed on the rear side of the sleeve stem 1902, the ruler board 1905 is inserted in the sleeve board 1904, the active driving device 1901 is arranged to be capable of being matched with the screw stem, the sleeve stem 1902 is pushed under the matching of the screw stem, and then the screw stem is driven by moving the sleeve stem 1902.

Furthermore, the sleeve plate 1904 and the ruler plate 1905 form a sliding connection, two sets of the sleeve rods 1902 are disposed in the vertical direction of the transmission screw rod 19, the supporting riding wheels 1903 are mounted on the front side of the sleeve rods 1902, the supporting riding wheels 1903 support the screw rod bodies 18 mounted on the positioning seats 17, and the distance between the two sets of the sleeve rods 1902 can be adjusted along the ruler plate 1905 by utilizing the sliding connection between the sleeve plates 1904 and the ruler plate 1905, so that the screw rod bodies 18 with different sizes can be used favorably, the inner wall surface of the sleeve plate 1904 is rough, and the surface of the ruler plate 1905 is designed to be a frosted surface, so that the sleeve plate 1904 and the ruler plate 1905 are matched with each other to slide, and the contact surfaces between the sleeve plate 1904 and the ruler plate 1905 are rough, therefore, the friction force is increased, and the sleeve rods are not easy to slide off the ruler plate 1902.

The scheme has the following working processes:

firstly, the screw rod is put into the placing grooves on the surface of the shaft sleeve 8 in sequence, the screw rod body 18 is arranged on the clamping base 1302, when the screw rod body 18 is arranged on the clamping base 1302, the connecting block 1301 can drive the guide rod 13 to descend by force, the upper part of the bottom barrel 1304 is wider, the guide rod 13 and the rubber plug 1305 can drop at the upper end of the bottom barrel 1304 at natural speed, but the descending speed of the rubber plug 1305 is limited as the inner diameter of the bottom barrel 1304 is smaller as going downwards, air rapidly goes into the bottom barrel 1304 as the previous rapid dropping causes, the air pressure at the bottom inside the bottom barrel 1304 is increased as the rubber plug 1305 sinks continuously, the descending speed of the rubber plug 1305 is reduced, until the screw rod body 18 is put into the positioning seat 17 inside the grinding device 10, and according to the actual length size of the screw rod body 18, the sliding connection relationship between the sleeve plate 1904 and the ruler plate 1905 is utilized, adjusting the distance between the upper and lower two sets of sleeves 1902, and allowing the supporting riding wheels 1903 on the inner side of the lower sleeves 1902 to support from the bottom of the screw body 18, then, transmitting the screw body 18 by using a sensing screw rod, and in the moving process, contacting with the polishing wheels 15 on the other side, the polishing wheels 15 rotating under the driving of the driving motor 16, allowing the polishing wheels 15 to polish the surface of the screw body 18, until the screw is completely polished, sliding the screw body 18 into the corresponding sleeves 601 in sequence through the sliding slots 21 on the sliding plates 20 in the middle-layer mounting seat 4, wherein the three sets of sliding plates 20 correspond to the three sets of sleeves 601, the sleeves 601 are provided with six sets of sleeves 601, and the six sets of sleeves 601 can correspond to the three sets of sliding plates 20 under the rotation of the motorized rotating shaft 603, and under the magnetic force, the screw body 18 is placed in the sleeves 601, then, the connecting frame 604 is rotated by the motorized rotating shaft 603, the center lines of the polishing sleeve 605 on the connecting frame 604 and the sleeve seat 601 are correspondingly overlapped, then the height of the connecting frame 604 is lowered by the hydraulic lifting rod 608, the polishing sleeve 605 is sleeved in the gap between the magnetic suction rotating shaft 602 and the sleeve seat 601 and forms a tabling connection with the sleeve seat 601 and the magnetic suction rotating shaft 602, then the magnetic suction rotating shaft 602 rotates to drive the polishing sleeve 605 to rotate, under the action of centrifugal force, the screw rod can be separated from the surface of the magnetic suction rotating shaft 602 and forms a threaded connection with the thread groove 606 in a matching way, under the threaded connection relation, as the friction between the polishing sleeve 605 and the screw rod body 18 is continuously increased, diamond sand grains 607 can continuously rub the surface of the screw rod body 18, and finally, after the use is finished, the middle layer mounting seat 4 and the bottom layer mounting seat 5 are connected by the connecting screw rod 11, the stability of the device is ensured when the device is not used, and the service life is prolonged.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited by the foregoing embodiments, which are merely illustrative of the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A high-precision screw outer circle polishing machine comprises a supporting seat (1), and is characterized in that a clamping seat (2) is fixedly connected to the front side of the upper end of the supporting seat (1), an upper-layer mounting seat (3) is installed on the inner side of the clamping seat (2) in an embedded mode, a middle-layer mounting seat (4) is installed below the upper-layer mounting seat (3), a bottom plate of the middle-layer mounting seat (4) is provided with a bottom-layer mounting seat (5), a mounting table (6) is installed on the inner side of the bottom-layer mounting seat (5) in an embedded mode, a roller shaft rod (7) vertically penetrates through the center axis of the upper-layer mounting seat (3), a shaft sleeve (8) is sleeved on the outer side of the roller shaft rod (7), a positioning groove (9) is formed in the surface of the upper-layer mounting seat (3), a polishing device (10) is installed on the inner side of the positioning groove (9) in an embedded mode, a connecting screw rod (11) is vertically arranged on the outer edge of the middle-layer mounting seat (4), a clamping groove (12) is connected to the surface, a guide rod (13) is installed on the inner wall where the clamping groove (12) is arranged, a guide rod (13) is installed, a fixed seat (14) is arranged inside the left-side of the polishing device (14) is arranged, a polishing wheel (15) is installed on one side of the fixed seat (15) and a polishing motor (15) is installed on the top of the polishing device (15) and a polishing machine (17) is installed, a screw body (18) is arranged in the positioning seat (17), a transmission screw rod (19) is embedded and installed on the inner wall of the positioning seat (17), a sliding plate (20) is arranged in the middle layer installation seat (4), a sliding groove (21) is formed in the surface of the sliding plate (20), the upper layer installation seat (3), the middle layer installation seat (4) and the bottom layer installation seat (5) are all located on the same axis, a roller shaft rod (7) penetrates through the central shaft of the bottom layer installation seat (5) from the central shaft of the upper layer installation seat (3), the roller shaft rod (7) and the upper layer installation seat (3), the middle layer installation seat (4) and the bottom layer installation seat (5) are in rotating connection, a magnetic suction rotating shaft (602), a motorized rotating shaft (603), a connecting frame (604), a grinding sleeve (605), a thread groove (606), a diamond (607) and a hydraulic lifting rod (608) are movably installed in the middle of the installation seat (6), a magnetic suction rotating shaft (602) is movably installed in the sleeve seat (601), a hydraulic lifting rod (603) penetrates through the hydraulic lifting rod (603) and is connected with the lifting rod (603), the sanding sleeve (605) is installed inside the one end of link (604) interlude, and threaded groove (606) have been seted up to the inner wall of sanding sleeve (605).

2. The high-precision screw outer circle polishing machine is characterized in that the grinding sleeve (605) is annularly distributed about the vertical center line of the motorized rotating shaft (603), and the outer diameter of the grinding sleeve (605) is matched with the inner diameter of the sleeve seat (601).

3. A high precision screw outer circle polishing machine according to claim 1, characterized in that the thread groove (606) is distributed in a spiral shape in the inner part of the polishing sleeve (605), and the diamond sand grains (607) are distributed evenly on the surface of the thread groove (606).

4. A high precision screw outer circle polishing machine according to claim 1, characterized in that the surface of the guide rod (13) is provided with a connecting block (1301), a holder (1302), a connecting spring (1303), a bottom cylinder (1304) and a rubber plug (1305), the front side surface of the connecting block (1301) is integrally connected with the holder (1302), the top of the inside of the guide rod (13) is connected with the connecting spring (1303), the bottom of the guide rod (13) is provided with the rubber plug (1305), and the bottom cylinder (1304) is installed on the outside of the rubber plug (1305).

5. A high precision screw rod outer circle polishing machine according to claim 4, characterized in that the vertical center line of the guide rod (13) and the vertical center line of the bottom cylinder (1304) are coincident with each other, and the outer structure of the bottom cylinder (1304) is wide at the top and narrow at the bottom.

6. The high-precision screw outer circle polishing machine according to claim 1, characterized in that the surface of the transmission screw rod (19) is provided with an active transmission device (1901), a sleeve rod (1902), a supporting riding wheel (1903), a sleeve plate (1904) and a ruler plate (1905), the sleeve rod (1902) is sleeved below the active transmission device (1901), the supporting riding wheel (1903) is installed on the inner side of the sleeve rod (1902), the sleeve plate (1904) is installed on the rear side of the sleeve rod (1902), and the ruler plate (1905) is inserted in the sleeve plate (1904).

7. A high accuracy screw outer circle polishing machine according to claim 6, characterized in that, the sleeve plate (1904) and the ruler plate (1905) form a sliding connection, and the sleeve rods (1902) are arranged in two groups along the vertical direction of the transmission screw rod (19).