CN112223111A - Polishing main machine with good lubricating effect - Google Patents

Abstract

The invention discloses a polishing host with good lubricating effect, which comprises a seat body, a main shaft, a grinding head and a driving motor, wherein the main shaft is arranged on the seat body; the main shaft is rotatably arranged on the seat body, the driving motor is fixedly arranged on the seat body to drive the main shaft to rotate, and the grinding head is arranged at the lower end of the main shaft; a lower support bearing used for supporting the main shaft is arranged at the lower part of the main shaft, and a sealing end cover is arranged below the lower support bearing; a lubricating oil channel communicated with the mounting cavity of the lower support bearing is formed in the base body; an oil supply device is arranged in the base body and communicated with the lubricating oil channel through a pipeline. Compared with the prior art, the spindle lubricating device has the characteristic of conveniently lubricating the rotation of the spindle, and can reduce the labor cost and improve the working efficiency of polishing equipment.

Description

Polishing main machine with good lubricating effect

Technical Field

The invention relates to the field of polishing equipment, in particular to a polishing main machine with a good lubricating effect.

Background

The grinding and polishing of stone or plate material is to grind the surface to be processed continuously by a grinding head to make the surface to be processed reach certain smoothness. Most of the existing stone grinding and polishing devices utilize a belt conveying mechanism to convey stones, a swing beam is arranged above the belt conveying mechanism, sliding rail seats fixed at two ends of the swing beam are slidably mounted on a rack, and when the stones are machined, the swing beam swings back and forth to drive a grinding head on the swing beam to polish the surfaces of the stones.

In order to ensure that the main shaft rotating at high speed can keep a better using state, lubricating oil or lubricating grease needs to be added periodically. The mode that adopts artifical the interpolation to go on usually, not only need consume a large amount of manual works still need shut down the equipment of polishing and maintain for the practical efficiency of the equipment of polishing is lower. The manual lubricating oil pumping mode has the problem that the lubrication is not timely due to the fact that maintenance is carried out after shutdown is needed, so that the service life is affected due to insufficient lubrication of equipment.

In view of the above, the applicant has made an intensive study on the above-mentioned defects in the prior art, and has made this invention.

Disclosure of Invention

The invention mainly aims to provide a polishing main machine with a good lubricating effect, which can facilitate the polishing main machine to add lubricating oil or lubricating grease, improve the working efficiency of the polishing main machine and save the labor cost.

In order to achieve the above purpose, the solution of the invention is:

a polishing main machine with good lubricating effect comprises a base body, a main shaft, a grinding head and a driving motor; the main shaft is rotatably arranged on the seat body, the driving motor is fixedly arranged on the seat body to drive the main shaft to rotate, and the grinding head is arranged at the lower end of the main shaft;

a lower support bearing used for supporting the main shaft is arranged at the lower part of the main shaft, and a sealing end cover is arranged below the lower support bearing; a lubricating oil channel communicated with the mounting cavity of the lower support bearing is formed in the base body; an oil supply device is arranged in the base body and communicated with the lubricating oil channel through a pipeline. Preferably, the oil supply device includes an oil distribution block provided in the seat body.

Further, the base body comprises a support frame, a central cylinder and a motor mounting seat, the central cylinder is formed in the middle of the support frame, and the main shaft is rotatably connected in the central cylinder; the motor mounting seat is connected to the upper end of the supporting frame and is suspended outside the supporting frame; an installation binding surface is formed on the outer side wall of the supporting frame below the motor installation seat, and a supporting clamping groove is formed at the upper end of the installation binding surface.

Further, the spindle comprises an outer shaft cylinder and an inner shaft, the outer shaft cylinder is rotatably connected with the central cylinder, a spline sleeve is arranged in the outer shaft cylinder, an inner spline is formed on the inner wall of the spline sleeve, an outer spline is arranged outside the inner shaft, and the inner shaft is connected with the spline sleeve through the spline and can slide along the axial direction of the outer shaft cylinder; the upper end of the outer shaft cylinder is connected with a driven wheel, and the driven wheel is connected with a driving wheel on an output shaft of the driving motor through a transmission part.

Furthermore, an upper support bearing used for supporting the outer shaft cylinder is arranged at the upper part of the central cylinder; the driven wheel is propped against the upper end of the inner ring of the upper supporting bearing from top to bottom.

Furthermore, the driven wheel and the driving wheel are belt pulleys, and the transmission part is a plurality of transmission belts connected to the driving wheel and the driven wheel.

Further, an installation through groove penetrating through the outer shaft barrel is formed in the outer shaft barrel, a driving key is installed in the installation through groove, and the driving key extends out of the installation through groove and is connected with the spline sleeve and the driven wheel.

Furthermore, the upper part of the inner shaft is connected with a lifting device for driving the inner shaft to lift; the lifting device comprises a driving seat, a lifting oil cylinder and an oil cylinder mounting seat; the driving seat is rotatably connected with the inner shaft, the oil cylinder mounting seat is arranged on the seat body, the lifting oil cylinder is fixedly connected with the oil cylinder mounting seat, and the lower end of a piston rod of the lifting oil cylinder is fixedly connected with the driving seat.

Furthermore, a pipeline mounting plate can be detachably arranged between the oil cylinder mounting seat and the seat body.

Further, a four-corner contact bearing connected with the driving seat is arranged at the upper end of the inner shaft, an upper cover plate is arranged above the four-corner contact bearing, a spacer sleeve sleeved on the inner shaft is arranged below the four-corner contact bearing, and a lower cover plate is arranged below the spacer sleeve.

Furthermore, the oil supply device is also connected with an upper lubricating pipeline, and one end of the upper lubricating pipeline, which is far away from the oil supply device, is communicated with the mounting cavity of the four-corner contact bearing; the upper lubrication pipe is formed with a screw adjustment section.

Furthermore, the oil supply device is fixedly arranged inside the base body, an operation window is formed on the side wall of the base body, and a sealing cover is detachably arranged on the operation window.

Further, a lubricating oil tank is arranged outside the seat body and connected with the oil supply device through a pipeline.

After the structure is adopted, the polishing main machine with good lubricating effect provided by the invention at least has the following beneficial effects:

the lubricating oil channel and the oil supply device are arranged, so that lubricating oil can be conveniently added into the lower supporting bearing of the main shaft, and the running resistance of the main shaft is reduced. Because the oil is supplied to the lubricating oil channel through the oil supply device, the lubricating oil can be added even if the main shaft rotates.

Secondly, an installation binding surface and a support clamping groove are formed outside the support frame of the motor installation seat and on the outer side wall of the support frame below the motor installation seat, so that the seat body is fixedly installed on the side surface of the swing beam in a binding mode through the installation binding surface, and the motor installation seat is located above the swing beam; so avoided punching on the pendulum beam and be used for installing the main shaft, the weight of driving motor and main shaft distributes more balancedly on the pendulum beam moreover for the host computer of polishing is more steady on the pendulum beam.

And thirdly, through arranging the upper lubricating pipeline, the four-corner contact bearing on the driving seat can be lubricated, so that the lubricating effect is ensured.

Compared with the prior art, the spindle lubricating device has the characteristic of conveniently lubricating the rotation of the spindle, and can reduce the labor cost and improve the working efficiency of polishing equipment.

Drawings

Fig. 1 is a schematic perspective view of a polishing main machine with good lubrication effect according to the present invention.

Fig. 2 is a schematic cross-sectional structure of the present invention.

FIG. 3 is a schematic cross-sectional view of another embodiment of the present invention.

Fig. 4 is an enlarged schematic view of a portion a in fig. 3.

Fig. 5 and 6 are schematic perspective views of the present invention.

Fig. 7 is a schematic perspective view of the base.

Fig. 8 is a schematic perspective view of the present invention with the cylinder mount hidden.

Fig. 9 is an enlarged schematic view of a structure at B in fig. 8.

FIG. 10 is a cross-sectional view of the outer shaft sleeve, spline sleeve and drive key.

Fig. 11 is a schematic perspective view of the grinding head.

Fig. 12 is a schematic sectional structure view of the grinding head.

Fig. 13 is a schematic cross-sectional view of another angle of the grinding head.

Fig. 14 is an enlarged schematic view of the structure at C in fig. 13.

Fig. 15 is a schematic perspective sectional structure of the grinding head.

Fig. 16 is a perspective view of the swing seat.

Fig. 17 is a schematic view of the structure of the swing seat and the track block.

Fig. 18 is a perspective view of the first external gear and the ring gear.

In the figure:

a seat body 1; a support frame 11; a mounting attachment surface 111; a support slot 112; a seal end cap 113; a limit mounting hole 114; a center cylinder 12; a lubricating oil passage 121; a motor mounting base 13; installing a rib plate 131; a motor mounting hole 132; an oil supply device 14; an upper lubrication line 141; a helical adjustment section 142; a fixed plate 15; a stopper rod 16; an operation window 17; a cover 171; a lubricating oil tank 18;

a main shaft 2; an outer shaft tube 21; an upper support bearing 211; an inner shaft 22; a water passage 221; an extension tube 222; a spline sleeve 23; a lower support bearing 24; a drive key 25;

a drive motor 3; a driven wheel 31; a drive wheel 32; a drive belt 33;

a grinding head 4; a central shaft 41; a housing 42; an upper case 421; a lower case 422; angular contact thrust knuckle bearing 423; a drive cap 424; a drive aperture 4241; locking end caps 425; a lock nut 426; a first oil plug 427; a second oil dam 428; a first external gear 431; a second external gear 432; an inner gear ring 433; bearing supports 434; the needle roller has no inner ring bearing 435; an upper fixing seat 436; a track block 44; a slide rail 441; a cylindrical roller bearing 442; a double row self aligning roller bearing 443; a gland 444; a swing seat 45; the drive pendulum 451; needle roller bearings 452; a grinding block mount 453;

a lifting device 5; a driving seat 51; a four-corner contact bearing 511; an upper cover plate 512; a spacer 513; a lower cover plate 514; a lift cylinder 52; a cylinder mount 53; a water injection sleeve 531; a water injection pipe 532; the pipeline mounting plate 6.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

As shown in fig. 1 to 18, the main polishing machine with good lubrication effect according to the present invention includes a base 1, a spindle 2, a polishing head 4 and a driving motor 3; the main shaft 2 is rotatably mounted on the seat body 1, the driving motor 3 is fixedly mounted on the seat body 1 to drive the main shaft 2 to rotate, and the grinding head 4 is mounted at the lower end of the main shaft 2; a lower support bearing 24 for supporting the main shaft 2 is arranged at the lower part of the main shaft 2, and a sealing end cover 113 is arranged below the lower support bearing 24; a lubricating oil passage 121 communicated with the mounting cavity of the lower support bearing 24 is formed in the base body 1; an oil supply device 14 is arranged in the base body 1, and the oil supply device 14 is communicated with the lubricating oil channel 121 through a pipeline. Preferably, the oil supply device 14 includes an oil distribution block disposed in the base body 1.

Thus, the polishing main machine with good lubricating effect according to the present invention can conveniently add lubricating oil to the lower support bearing 24 of the main shaft 2 by providing the lubricating oil passage 121 and the oil supply device 14, so as to reduce the running resistance of the main shaft 2. Since the oil is supplied to the lubricating oil passage 121 through the oil supply device 14, the lubricating oil can be supplied even when the main shaft 2 is rotated.

Preferably, the base body 1 comprises a supporting frame 11, a central cylinder 12 and a motor mounting base 13, the central cylinder 12 is formed in the middle of the supporting frame 11, and the spindle 2 is rotatably connected in the central cylinder 12; the motor mounting base 13 is connected to the upper end of the supporting frame 11 and is suspended outside the supporting frame 11; an installation abutting surface 111 is formed on the outer side wall of the support frame 11 below the motor installation seat 13, and a support clamping groove 112 is formed at the upper end of the installation abutting surface 111. The motor mounting seat 13 is arranged outside the supporting frame 11, and a mounting attachment surface 111 and a supporting clamping groove 112 are formed on the outer side wall of the supporting frame 11 below the motor mounting seat 13, so that the seat body 1 is fixedly attached to the side surface of the swing beam through the mounting attachment surface 111, and the motor mounting seat 13 is positioned above the swing beam; so avoided punching on the pendulum beam and be used for installing main shaft 2, the weight of driving motor 3 and main shaft 2 distributes more balancedly on the pendulum beam moreover for the host computer of polishing is more steady on the pendulum beam. Preferably, a mounting rib plate 131 is formed on the upper edge of the motor mounting base 13, and a plurality of motor mounting holes 132 are processed on the mounting rib plate 131; the main shaft 2 of the driving motor 3 is downwards arranged on the mounting rib plate 131.

Preferably, the main shaft 2 includes an outer shaft cylinder 21 and an inner shaft 22, the outer shaft cylinder 21 is rotatably connected with the central cylinder 12, a spline sleeve 23 is arranged in the outer shaft cylinder 21, an inner spline is formed on an inner wall of the spline sleeve 23, an outer spline is arranged outside the inner shaft 22, and the inner shaft 22 is connected with the spline sleeve 23 through a spline and can slide along the axial direction of the outer shaft cylinder 21; the upper end of the outer shaft cylinder 21 is connected with a driven wheel 31, and the driven wheel 31 is connected with a driving wheel 32 on an output shaft of the driving motor 3 through a transmission part.

Preferably, the upper part of the central cylinder 12 is provided with an upper support bearing 211 for supporting the outer shaft cylinder 21; the driven wheel 31 abuts against the upper end of the inner ring of the upper support bearing 211 from top to bottom. The upper support bearing 211 further improves the support stability, and the driven wheel 31 abuts against the inner ring of the upper support bearing 211 from top to bottom, so that the driven wheel 31 is convenient to axially position. Preferably, the driven wheel 31 and the driving wheel 32 are belt pulleys, and the transmission part is a plurality of transmission belts 33 connected to the driving wheel 32 and the driven wheel 31.

Preferably, the outer shaft cylinder 21 is provided with a through installation groove, the through installation groove is internally provided with a drive key 25, and the drive key 25 extends out of the through installation groove and is connected with the spline sleeve 23 and the driven wheel. Thus, the driving key 25 is arranged and simultaneously connected with the installation through groove, the spline sleeve 23 and the driven wheel, so that the whole structure is more compact and stable.

Preferably, a lifting device 5 for driving the inner shaft 22 to lift is connected to the upper part of the inner shaft 22; the lifting device 5 comprises a driving seat 51, a lifting oil cylinder 52 and an oil cylinder mounting seat 53; the driving seat 51 is rotatably connected with the inner shaft 22, the cylinder mounting seat 53 is arranged on the seat body 1, the lift cylinder 52 is fixedly connected with the cylinder mounting seat 53, and the lower end of a piston rod of the lift cylinder 52 is fixedly connected with the driving seat 51. With the ascending or descending of the lifting cylinder 52, the driving seat 51 is driven to ascend or descend, and the height position of the inner shaft 22 is adjusted. When the stone is ground, the lifting cylinder 52 descends, and the grinding heads 4 on the inner shaft 22 descend to grind the stone. After finishing the grinding, the lifting cylinder 52 drives the inner shaft 22 to ascend, thereby separating the grinding heads 4 from the plate.

Preferably, the pipeline mounting plate 6 is detachably arranged between the oil cylinder mounting seat 53 and the base body 1, so as to facilitate the mounting and fixing of the oil pipeline.

Preferably, a four-corner contact bearing 511 connected to the driving seat 51 is disposed at the upper end of the inner shaft 22, an upper cover plate 512 is disposed above the four-corner contact bearing 511, a spacer 513 sleeved on the inner shaft 22 is disposed below the four-corner contact bearing 511, and a second flange 514 is disposed below the spacer 513. Furthermore, the oil supply device 14 is further connected with an upper lubrication pipeline 141, and one end of the upper lubrication pipeline 141, which is far away from the oil supply device 14, is communicated with the installation cavity of the four-corner contact bearing 511; the upper lubrication conduit is formed with a helical adjustment section 142. By providing the upper lubrication duct 141, the four corner contact bearing 511 on the driving seat 51 can be lubricated, thereby ensuring a lubricating effect. When the driving seat 51 ascends and descends, the screw adjusting section 142 of the upper lubrication pipe 141 is stretched upwards or compressed downwards to ensure the stable connection of the upper lubrication pipe 141 and the driving seat 51.

Preferably, the oil supply device 14 is fixedly disposed inside the seat body 1, an operation window 17 is formed on a side wall of the seat body 1, and a cover 171 is detachably disposed on the operation window 17. When maintenance of the oil supply device 14 is required, the cover 171 can be removed for maintenance operation.

Preferably, a water passage 221 is formed in the center of the inner shaft 22, an extension pipe 222 is connected to the upper end of the water passage 221, a water injection sleeve 531 is arranged at the upper end of the oil cylinder mounting seat 53, a water injection pipe 532 is arranged in the middle of the water injection sleeve 531, the water injection pipe 532 extends into the extension pipe 222 from top to bottom, and the outer wall of the water injection pipe 532 is not in contact with the inner wall of the extension pipe 222.

Preferably, a lubricating oil tank 18 is arranged outside the seat body 1 for storing lubricating oil. The lubricating oil tank 18 is connected to the oil supply device 14 through a pipe.

Preferably, the lower end of the seat body 1 is provided with a limit mounting hole 114; a limiting fixing plate 15 is mounted at the lower end of the seat body 1, and the fixing plate 15 is fixedly connected with the limiting mounting hole 114 through a fixing piece; a limiting through hole which is through up and down is formed in the fixing plate 15, and a limiting rod 16 is arranged in the limiting through hole in a sliding mode up and down.

The grinding head 4 comprises a central shaft 41, a shell 42, a differential mechanism, a track block 44 and a plurality of swinging seats 45; a central shaft 41 is arranged in the shell 42, and the shell 42 and the central shaft 41 rotate at a constant speed; the track block 44 is arranged in the shell 42 and is rotatably connected to the central shaft 41, a plurality of swing seats 45 are rotatably connected to the shell 42, and a grinding block mounting seat 453 positioned outside the shell 42 is formed on each swing seat 45; the track block 44 is coaxially and rotatably connected with the central shaft 41; a slide rail 441 is arranged on the rail block 44, a driving swing rod 451 is arranged at one end of the swing seat 45 in the housing 42, and a roller capable of being connected in the slide rail 441 in a rolling manner is arranged at the free end of the driving swing rod 451; a differential mechanism is connected between the track block 44 and the central shaft 41, and the differential mechanism drives the track block 44 and the central shaft 41 to form differential motion; a bearing support 434 is arranged on the outer side of the inner gear ring 433, and a needle-roller inner-ring-free bearing 435 is arranged between the inner gear ring 433 and the bearing support 434; an upper fixed seat 436 is connected to the bearing support 434, the upper fixed seat 436 is rotatably connected to the central shaft 41, and the fixed seat is connected to the lower end of the limit rod 16. Preferably, the lower end of the limiting rod 16 is abutted against or fixedly connected to the fixing seat.

Preferably, the swing axis of the swing seat 45 is perpendicular to the central axis 41. Therefore, the swinging shaft of the swinging seat 45 is approximately parallel to the grinding plane, and the grinding operation can be better carried out on the plane to be ground.

Preferably, the roller is a needle roller bearing 452, and a roller shaft of the needle roller bearing 452 is mounted on the driving swing rod 451 in a threaded locking manner. Thus, the needle roller bearing 452 can ensure the smoothness of the roller on the slide rail 441, and ensure that the swing seat 45 can swing better along with the rotation of the housing 42.

Preferably, the differential mechanism includes a first external gear 431, a second external gear 432, and an internal gear 433; the first external gear 431 is connected to the central shaft 41 by a spline, and the second external gear 432 is fixedly connected to the track block 44 and is coaxially disposed with the central shaft 41; is eccentrically arranged with the central shaft 41 through an inner gear ring 433 and is simultaneously in meshed connection with the first outer gear 431 and the second outer gear 432; the first external gear 431 and the second external gear 432 have different numbers of teeth. Through the mutual matching of the first external gear 431, the second external gear 432 and the internal gear 433, the rotation speed between the second external gear and the second external gear 432 is caused to be different, so that the rotation speed of the track block 44 relative to the shell 42 is far less than the rotation speed of the shell 42 relative to the shell. Further, when the swing seats 45 swing, the grinding block mounting seats 453 of two adjacent swing seats 45 are close to or far from each other. And two adjacent swing seats 45 change back and forth between the inner splayed state and the outer splayed state.

Preferably, the number of teeth of the first and second external gears 431 and 432 is different by 1 tooth. Thus, for example, the first external gear 431 has 35 teeth and the second external gear 432 has 36 teeth, so that after the arrangement, the housing 42 needs to rotate 36 times, and the track block 44 rotates 1 time relative to the housing 42.

Preferably, the lower end of the outer shell 42 is connected with the central shaft 41 through an angular contact thrust knuckle bearing 423, a transmission cover 424 is connected to the central shaft 41 through a spline, the transmission cover 424 is located below the outer shell 42, a plurality of transmission holes 4241 are formed in the transmission cover 424, a plurality of transmission bolts are installed on the outer shell 42, and bolt heads of the transmission bolts extend into the transmission holes 4241; a locking end cover 425 is arranged on the central shaft 41 below the transmission cover 424, and a locking nut 426 for locking the locking end cover 425 is further arranged on the central shaft 41. By arranging the angular contact thrust knuckle bearing 423, the housing 42 can swing at a small angle, so that the polishing effect when the surface to be processed has large undulation is improved.

Preferably, a cylindrical roller bearing 442 and a double-row self-aligning roller bearing 443 are arranged between the track block 44 and the central shaft 41, a gland 444 is arranged at the lower end of the track block 44, and the gland 444 is locked on the track block 44 and abuts against the cylindrical roller bearing 442 and the double-row self-aligning roller bearing 443.

Preferably, the housing 42 includes an upper housing 421 and a lower housing 422, the upper housing 421 and the lower housing 422 are detachably and fixedly connected and enclose a cavity for mounting the differential mechanism and the track block 44, and the swing seat 45 is rotatably connected to the lower housing 422. Thus, the assembly of the internal device structure is greatly facilitated by the way of assembling the upper shell 421 and the lower shell 422 to form the outer shell 42.

Preferably, a first oil plug 427 and a second oil plug 428 which are communicated with the cavity of the shell 42 are arranged on the lower shell 422, the first oil plug 427 is arranged on the side wall of the lower shell 422, and the second oil plug 428 is arranged on the lower shell 422 at the bottom of the oil cavity of the shell 42. The oil can be conveniently added into and released from the cavity of the housing 42 through the first oil plug 427 and the second oil plug 428.

Compared with the prior art, the spindle device has the characteristic of conveniently lubricating the rotation of the spindle 2, and can reduce the labor cost and improve the working efficiency of polishing equipment.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.

Claims (10)

1. A polishing main machine with good lubricating effect is characterized by comprising a base body, a main shaft, a grinding head and a driving motor; the main shaft is rotatably arranged on the seat body, the driving motor is fixedly arranged on the seat body to drive the main shaft to rotate, and the grinding head is arranged at the lower end of the main shaft;

a lower support bearing used for supporting the main shaft is arranged at the lower part of the main shaft, and a sealing end cover is arranged below the lower support bearing; a lubricating oil channel communicated with the mounting cavity of the lower support bearing is formed in the base body; an oil supply device is arranged in the base body and communicated with the lubricating oil channel through a pipeline.

2. A sanding main machine with good lubricating effect as defined in claim 1, wherein said base body includes a supporting frame, a central cylinder and a motor mounting seat, said central cylinder is formed in the middle of said supporting frame, and said main shaft is rotatably connected in said central cylinder; the motor mounting seat is connected to the upper end of the supporting frame and is suspended outside the supporting frame; an installation binding surface is formed on the outer side wall of the supporting frame below the motor installation seat, and a supporting clamping groove is formed at the upper end of the installation binding surface.

3. A polishing main machine with good lubricating effect as claimed in claim 2, wherein the main shaft includes an outer shaft cylinder and an inner shaft, the outer shaft cylinder is rotatably connected with the central cylinder, a spline sleeve is arranged in the outer shaft cylinder, an inner spline is formed on the inner wall of the spline sleeve, an outer spline is arranged outside the inner shaft, and the inner shaft is connected with the spline sleeve through a spline and can slide along the axial direction of the outer shaft cylinder; the upper end of the outer shaft cylinder is connected with a driven wheel, and the driven wheel is connected with a driving wheel on an output shaft of the driving motor through a transmission part.

4. A sanding main machine with excellent lubricating effect as claimed in claim 3, characterized in that the upper part of the central cylinder is provided with an upper supporting bearing for supporting the outer shaft cylinder; the driven wheel is propped against the upper end of the inner ring of the upper supporting bearing from top to bottom.

5. A sanding main machine with excellent lubrication effect as defined in claim 3, wherein the driven wheel and the driving wheel are belt pulleys, and the transmission members are a plurality of transmission belts connected to the driving wheel and the driven wheel.

6. A sanding main machine with good lubricating effect as defined in claim 3, wherein the outer shaft cylinder is provided with a mounting through groove which is arranged in a penetrating manner, a driving key is mounted in the mounting through groove, and the driving key extends out of the mounting through groove and is connected with the spline sleeve and the driven wheel.

7. A sanding main machine with good lubricating effect as claimed in claim 3, characterized in that a lifting device for driving the inner shaft to lift and lower is connected to the upper part of the inner shaft; the lifting device comprises a driving seat, a lifting oil cylinder and an oil cylinder mounting seat; the driving seat is rotatably connected with the inner shaft, the oil cylinder mounting seat is arranged on the seat body, the lifting oil cylinder is fixedly connected with the oil cylinder mounting seat, and the lower end of a piston rod of the lifting oil cylinder is fixedly connected with the driving seat.

8. A grinding machine with good lubricating effect as claimed in claim 7, characterized in that a four-corner contact bearing connected with the driving seat is arranged at the upper end of the inner shaft, an upper cover plate is arranged above the four-corner contact bearing, a spacer sleeve sleeved on the inner shaft is arranged below the four-corner contact bearing, and a lower cover plate is arranged below the spacer sleeve.

9. A grinding host machine with good lubricating effect as claimed in claim 8, wherein the oil supply device is further connected with an upper lubricating pipeline, and one end of the upper lubricating pipeline, which is far away from the oil supply device, is communicated with the mounting cavity of the four-corner contact bearing; the upper lubrication pipe is formed with a screw adjustment section.

10. A sanding main machine with good lubricating effect as claimed in claim 1, wherein a lubricating oil tank is arranged outside the seat body, and the lubricating oil tank is connected with the oil supply device through a pipeline.

Images