WO2022062299A1

WO2022062299A1 - Polishing main machine having good stability

Info

Publication number: WO2022062299A1
Application number: PCT/CN2021/075021
Authority: WO
Inventors: 林智敏; 洪培英; 魏随吉; 林榕栋; 黄嘉鸿
Original assignee: 泉州市海恩德机电科技发展有限公司
Priority date: 2020-09-27
Filing date: 2021-03-29
Publication date: 2022-03-31
Also published as: CN112276793B; CN113798994B; CN113714929B; CN112276793A; CN113714929A; CN113798994A

Abstract

A polishing main machine having good stability, comprising a base body (1), a spindle (2), a polishing head (4), and a driving motor (3). The spindle is rotatably mounted on the base body, the driving motor is fixedly mounted on the base body to drive the spindle to rotate, and the polishing head is mounted at the lower end of the spindle; and the base body is formed by machining after casting. The polishing main machine uses an integrally cast base body, so that the overall stability is improved, and the machining quality is guaranteed.

Description

A stable grinding host

技术领域technical field

The invention relates to the field of grinding equipment, in particular to a grinding host with good stability.

背景技术Background technique

The grinding and polishing of stone or plate-like materials is to continuously grind the surface to be processed by the grinding head, so that the surface to be processed reaches a certain smoothness. Most of the current stone grinding and polishing devices use the belt conveying mechanism to convey the stone, and a swing beam is arranged above the belt conveying mechanism. , drive the grinding head on it to polish the surface of the stone.

The seat of the traditional grinding machine is made of steel plates spliced together and connected by screws or welding. The machined seat body has poor stability. Easy to deform and vibrate, thus affecting the effect of the sanding.

The main shaft of the traditional grinding host needs to pass through the middle of the pendulum beam, which affects the structural strength of the pendulum beam, thereby reducing the grinding and polishing accuracy of the overall grinding host.

In view of this, the applicant has conducted in-depth research on the above-mentioned defects in the prior art, resulting in this case.

发明内容SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a grinding host with good stability, which has the characteristics of good stability of the seat body, and can reduce the vibration deviation of the main shaft and the grinding head during grinding.

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

A grinding host with good stability includes a seat body, a main shaft, a grinding head and a driving motor; the main shaft is rotatably mounted on the seat body, and the driving motor is fixedly installed on the seat body to drive the main shaft Rotating, the grinding head is installed on the lower end of the main shaft; wherein, the seat body is machined after casting.

Further, the seat body is integrally formed of cast steel.

Further, the base body includes a supporting frame, a central cylinder and a motor mounting seat that are integrally connected, the central cylinder is formed in the middle of the supporting frame, and the main shaft is rotatably connected in the central cylinder; the motor mounting seat is connected to The upper end of the support frame is overhanging the outside of the support frame; an installation abutment surface is formed on the outer side wall of the support frame below the motor mounting seat, and a support slot is formed at the upper end of the installation and abutment surface.

Further, a mounting rib is formed on the upper edge of the motor mounting seat, and a plurality of motor mounting holes are machined on the mounting rib; the main shaft of the driving motor is downwardly mounted on the mounting rib.

Further, the main shaft includes an outer shaft barrel and an inner shaft, the outer shaft barrel is rotatably connected with the central barrel, a spline sleeve is arranged in the outer shaft barrel, and an inner wall is formed on the inner wall of the spline sleeve. Splines, external splines are arranged on the outside of the inner shaft, and the inner shaft is connected with the spline sleeve through the splines to be able to slide along the axial direction of the outer shaft barrel; the upper end of the outer shaft barrel is connected with a A driven wheel, the driven wheel is connected with the driving wheel on the output shaft of the drive motor through a transmission component.

Further, an upper support bearing for supporting the outer shaft tube is arranged on the upper part of the central cylinder; the driven wheel abuts against the upper end of the inner ring of the upper support bearing from top to bottom.

Further, the driven pulley and the driving pulley are pulleys, and the transmission component is a plurality of transmission belts connected to the driving pulley and the driven pulley.

Further, an installation through groove is provided on the outer shaft barrel, a drive key is installed in the installation through groove, and the drive key protrudes from the installation through groove and is connected with the spline sleeve and the driven wheel. connect.

Further, the upper part of the inner shaft is connected with a lifting device for driving the lifting and lowering of the inner shaft; the lifting device includes a driving seat, a lifting oil cylinder and an oil cylinder mounting seat; the driving seat is rotatably connected with the inner shaft, and the oil cylinder The 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 the piston rod of the lifting oil cylinder is fixedly connected with the driving seat.

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

Further, a pipeline installation plate is arranged between the oil cylinder mounting base and the base body, a through hole is formed in the middle of the pipeline installation plate, and the edge of the through hole forms a first flange higher than the upper surface of the pipeline installation plate; A second flange is formed downward on the lower cover plate; the outer diameter of the first flange is smaller than the inner diameter of the second flange.

Further, a solenoid valve for driving and controlling the lift cylinder is provided in the support frame, and the solenoid valve is connected with the lift cylinder through a pipeline.

Further, a lubricating sleeve is provided at the lower end of the inner cavity of the outer shaft barrel, and the inner wall of the lubricating sleeve is in abutting contact with the outer wall of the inner shaft.

Further, the lower part of the central cylinder is provided with a lower supporting bearing for supporting the outer shaft cylinder, and a sealing end cover is provided below the lower supporting bearing; the central cylinder is provided with a bearing seat for mounting with the lower supporting bearing A lubricating oil channel communicated with the cavity; an oil supply device is arranged in the support frame, and the oil supply device is communicated with the lubricating oil channel through a pipeline.

Further, a water passage is formed in the center of the inner shaft, an extension pipe is connected to the upper end of the water passage, a water injection sleeve is arranged at the upper end of the oil cylinder mounting seat, and a water injection pipe is arranged in the middle of the water injection sleeve. The water pipe extends into the extension pipe from top to bottom, and the outer wall of the water injection pipe does not contact the inner wall of the extension pipe.

Further, the lower end of the seat body is provided with a limit installation hole; the lower end of the seat body is installed with a limit fixing plate, and the limit fixing plate is fixedly connected with the limit installation hole through a fixing member; the limit fixing plate is A limit through hole that penetrates up and down is formed, and a limit rod is slid up and down in the limit through hole.

Further, the middle part of the support frame is integrally provided with a reinforcing baffle.

After adopting the above structure, the present invention relates to a grinding host with good stability, which at least has the following beneficial effects:

1. The overall stability of the seat body formed by one-piece casting and then machining is better than that of the traditional seat body formed by plate splicing or welding, and the stability of the device can be better ensured when the grinding head is ground. , thereby improving the machining quality of the machined surface.

2. A mounting surface and a supporting slot are formed on the outer side wall of the support frame under the motor mounting seat outside the support frame, so that the seat body is attached to the mounting surface through the mounting surface It is fixedly installed on the side of the pendulum beam, and the motor mounting seat is located above the pendulum beam; in this way, drilling holes on the pendulum beam for installing the main shaft are avoided, and the weight of the drive motor and the main shaft are more balanced on the pendulum beam, so that the grinding machine is More stable on the swing beam.

3. By arranging a main shaft with an outer shaft barrel and an inner shaft, the outer shaft barrel is rotatably connected to the seat body and a driven wheel is connected to the outer shaft barrel, and the drive motor drives the driven wheel to rotate through the transmission component, thereby driving the driven wheel to rotate. The outer shaft barrel rotates. The outer shaft barrel is provided with a spline sleeve, which can not only drive the inner shaft to rotate, but also enable the inner shaft to slide up and down relative to the outer shaft barrel.

4. The drive key is connected with the inner shaft, the spline sleeve and the driven wheel at the same time, and has the feature of compact structure.

Compared with the prior art, the present invention improves the overall stability and ensures the processing quality by adopting an integrally casted base.

附图说明Description of drawings

FIG. 1 is a schematic diagram of the three-dimensional structure of a grinding host with good stability according to the present invention.

FIG. 2 is a schematic structural diagram of a cross-section of the present invention.

FIG. 3 is a schematic cross-sectional structure diagram of another angle of the present invention.

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3 .

Figure 5 is a schematic cross-sectional structural diagram of the outer shaft barrel, the spline sleeve and the drive key.

6 and 7 are schematic diagrams of the three-dimensional structure of the other two angles of the present invention.

FIG. 8 is a schematic diagram of the exploded structure of the seat body and the limit fixing plate. FIG. 9 is a schematic three-dimensional structure diagram of the seat body.

FIG. 10 is a schematic cross-sectional structure diagram of the seat body.

FIG. 11 is a schematic diagram of the three-dimensional structure of the grinding head.

FIG. 12 is a schematic cross-sectional structure diagram of a grinding head.

FIG. 13 is a three-dimensional cross-sectional structural schematic diagram of a grinding head.

FIG. 14 is a schematic three-dimensional structure diagram of the swing seat.

FIG. 15 is a schematic diagram of the matching structure of the swing seat and the track block.

FIG. 16 is a schematic three-dimensional structural diagram of the first outer teeth and the inner gear ring.

In the picture:

base body 1; support frame 11; mounting surface 111; support slot 112; sealing end cover 113; limit mounting hole 114; center cylinder 12; lubricating oil passage 121; upper support bearing 122; Rib plate 131; motor mounting hole 132; oil supply device 14; limit fixing plate 15; limit through hole 151; limit rod 16; solenoid valve 17;

main shaft 2; outer shaft barrel 21; inner shaft 22; water passage 221; extension pipe 222; spline sleeve 23; lubricating bushing 24; lower support bearing 25; drive key 26;

Drive motor 3; driving wheel 31; driven wheel 32; transmission belt 33;

Grinding head 4; Center shaft 41; Flange joint 411;

Shell 42; first external gear 431; second external gear 432; inner gear 433; bearing support 434; needle roller bearing without inner ring 435; upper fixed seat 436; track block 44; slide rail 441; Drive swing rod 451; Needle roller bearing 452; Grinding block mounting seat 453;

Lifting device 5; driving seat 51; four-corner contact bearing 511; upper cover plate 512; spacer 513; lower cover plate 514; second flange 515; ; Pipeline mounting plate 6 ; The first flange 61 .

具体实施方式detailed description

In order to further explain the technical solutions of the present invention, the present invention will be described in detail below through specific embodiments.

As shown in FIGS. 1 to 16 , it is a grinding host with good stability involved in the present invention, comprising a seat body 1, a main shaft 2, a grinding head 4 and a driving motor 3; the main shaft 2 is rotatably installed on the seat On the body 1, the driving motor 3 is fixedly installed on the base body 1 to drive the main shaft 2 to rotate, and the grinding head 4 is installed at the lower end of the main shaft 2; the base body 1 is machined after casting. become.

In this way, the present invention relates to a grinding host machine with good stability, by using the seat body 1 formed by integral casting and then machining, the overall stability is better than that of the traditional seat body 1 formed by splicing or welding plates , the stability of the device can be better ensured when the grinding head 4 is grinding, thereby improving the processing quality of the processed surface. Preferably, the seat body 1 is integrally formed of cast steel.

Preferably, the base body 1 includes a supporting frame 11 , a central cylinder 12 and a motor mounting base 13 that are integrally connected, the central cylinder 12 is formed in the middle of the supporting frame 11 , and the main shaft 2 is rotatably connected to the central cylinder 12; the motor mounting seat 13 is connected to the upper end of the support frame 11 and overhangs outside the support frame 11; a mounting surface 111 is formed on the outer side wall of the support frame 11 below the motor mounting seat 13, and the said A support slot 112 is formed on the upper end of the mounting and fitting surface 111 . The motor mount 13 is outside the support frame 11, and a mounting surface 111 and a support slot 112 are formed on the outer side wall of the support frame 11 below the motor mount 13, so that the mount 1 passes through the mounting The abutment surface 111 is fitted and fixedly installed on the side of the swing beam, and the motor mounting seat 13 is located above the swing beam; thus avoiding drilling holes on the swing beam for installing the main shaft 2, and the weight of the drive motor 3 and the main shaft 2 is in the swing beam. The distribution on the beam is more balanced, making the grinding machine more stable on the swing beam.

Further, a mounting rib 131 is formed on the upper edge of the motor mounting seat 13 , and a plurality of motor mounting holes 132 are machined on the mounting rib 131 ; the main shaft 2 of the driving motor 3 is installed on the mounting rib downward. On the board 131 , it is convenient to install the drive motor 3 on the motor mount 13 .

Preferably, the main shaft 2 includes an outer shaft barrel 21 and an inner shaft 22, the outer shaft barrel 21 is rotatably connected with the central barrel 12, and a spline sleeve 23 is arranged in the outer shaft barrel 21. An inner spline is formed on the inner wall of the key sleeve 23 , an outer spline is arranged on the outside of the inner shaft 22 , and the inner shaft 22 is connected with the spline sleeve 23 through the spline and can follow the outer shaft barrel 21 . The upper end of the outer shaft barrel 21 is connected with a driven wheel 32, and the driven wheel 32 is connected with the driving wheel 31 on the output shaft of the drive motor 3 through a transmission component. By arranging the main shaft 2 with the outer shaft barrel 21 and the inner shaft 22, the outer shaft barrel 21 is rotatably connected with the base body 1, and the outer shaft barrel 21 is connected with a driven wheel 32, and the drive motor 3 drives the The driven wheel 32 rotates, thereby driving the outer shaft barrel 21 to rotate. The outer shaft barrel 21 is provided with a spline sleeve 23 , which can not only drive the inner shaft 22 to rotate, but also enable the inner shaft 22 to slide up and down relative to the outer shaft barrel 21 .

Preferably, an upper support bearing 122 for supporting the outer shaft tube 21 is provided on the upper part of the central cylinder 12 ;

Further, the driven pulley 32 and the driving pulley 31 are pulleys, and the transmission components are several transmission belts 33 connected to the driving pulley 31 and the driven pulley 32 .

Preferably, the outer shaft barrel 21 is provided with a through-installation through groove, a drive key 26 is installed in the installation through groove, the drive key 26 protrudes from the installation through groove and is connected with the spline sleeve The drum 23 is connected to the driven wheel 32 . The drive key 26 is connected with the inner shaft 22, the spline sleeve 23 and the driven wheel 32 at the same time, and has a compact structure.

Preferably, the upper part of the inner shaft 22 is connected with a lifting device 5 for driving the inner shaft 22 to rise and fall; the lifting device 5 includes a driving seat 51, a lifting oil cylinder 52 and an oil cylinder mounting seat 53; the driving seat 51 is connected to the The inner shaft 22 is rotatably connected, the oil cylinder mounting seat 53 is arranged on the base body 1, the lifting oil cylinder 52 is fixedly connected with the oil cylinder mounting seat 53, and the lower end of the piston rod of the lifting oil cylinder 52 is connected to the drive The seat 51 is fixedly connected. As the lift cylinder 52 rises or falls, the drive base 51 is driven to rise or fall, thereby realizing the adjustment of the height position of the inner shaft 22 . When grinding the stone, the lifting cylinder 52 descends, and the grinding head 4 on the inner shaft 22 descends to grind the plate. After grinding, the lift cylinder 52 drives the inner shaft 22 to rise, thereby separating the grinding head 4 from the plate.

Preferably, the upper end of the inner shaft 22 is provided with a four-corner contact bearing 511 connected with the drive seat 51 , an upper cover plate 512 is provided above the four-corner contact bearing 511 , and a sleeve sleeved on the bottom of the four-corner contact bearing 511 is provided. The spacer 513 on the inner shaft 22 is provided with a lower cover plate 514 below the spacer 513 . The quadrangular contact bearing 511 plays a role of supporting the upper end of the inner shaft 22 and reduces the resistance of the inner shaft 22 to rotate.

Preferably, a pipeline mounting plate 6 is arranged between the oil cylinder mounting seat 53 and the seat body 1 , a through hole is formed in the middle of the pipeline mounting plate 6 , and the edge of the through hole is formed higher than the upper surface of the pipeline mounting plate 6 . The first flange 61 ; the lower cover plate 514 is formed with a second flange 515 downward; the outer diameter of the first flange 61 is smaller than the inner diameter of the second flange 515 . The second flange 515 rotates with the rotation of the inner shaft 22. By setting the second flange 515 and the first flange 61 up and down, the water droplets falling on the second flange 515 from top to bottom Or particles cannot easily pass through the through holes on the pipeline mounting plate 6 . Avoid the influence of water droplets and impurities on the rotation of the outer shaft barrel 21 and the inner shaft 22 .

Preferably, the support frame 11 is provided with a solenoid valve 17 for driving and controlling the lift cylinder 52 , and the solenoid valve 17 is connected to the lift cylinder 52 through a pipeline. In this way, the solenoid valve 17 switches the oil passages, so that the lift cylinder 52 is raised or lowered.

Preferably, the lower end of the inner cavity of the outer shaft barrel 21 is provided with a lubricating sleeve, and the inner wall of the lubricating sleeve is in abutting contact with the outer wall of the inner shaft 22 . The lubricating bushing serves to reduce the resistance of the inner shaft 22 to rotate on the outer shaft barrel 21 .

Preferably, a lower support bearing 25 for supporting the outer shaft barrel 21 is provided at the lower part of the central cylinder 12 , and a sealing end cover 113 is provided below the lower supporting bearing 25 ; The lubricating oil channel 121 communicates with the mounting cavity of the bearing seat of the support bearing 25 ; the support frame 11 is provided with an oil supply device 14 , and the oil supply device 14 communicates with the lubricating oil channel 121 through a pipeline. In this way, the lubricating oil is delivered by the oil supply device 14 , which can conveniently add lubricating oil to the lower support bearing 25 , which saves labor costs and avoids the need to stop the equipment to add lubricating oil, which affects the work efficiency.

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 , and a water injection sleeve 531 is provided at the upper end of the oil cylinder mounting seat 53 . A water injection pipe 532 is provided, 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 does not contact the inner wall of the extension pipe 222 . Water can pass through the water injection pipe 532 and be injected into the water passage 221 to be fed to the polished surface of the plate. Since the outer wall of the water injection pipe 532 is not in contact with the inner wall of the extension pipe 222, during operation, the inner shaft 22 rotates to drive the extension pipe 222 to rotate, and the water injection pipe 532 is connected to the oil cylinder mounting seat through the water injection sleeve 531 53 is fixedly connected, so that it is convenient to inject water into the water passage 221 in the center of the inner shaft 22 .

Preferably, the lower end of the seat body 1 is provided with a limit installation hole 114; the lower end of the seat body 1 is installed with a limit fixing plate 15, and the limit fixing plate 15 is fixedly connected to the limit installation hole 114 through a fixing member; The limit fixing plate 15 is formed with a limit through hole 151 penetrating up and down, and a limit rod 16 is slidably arranged in the limit through hole 151 up and down.

The grinding head 4 includes a central shaft 41, a casing 42, a differential mechanism, a track block 44 and a number of swing seats 45; the casing 42 is provided with a central shaft 41, and the casing 42 and the central shaft 41 have the same speed Rotation; the track block 44 is arranged in the outer casing 42 and is rotatably connected to the central shaft 41, a plurality of the swinging seats 45 are rotatably connected to the outer casing 42, and the swinging seats 45 are formed on the outer casing. The grinding block mounting seat 453 on the outside of 42; the track block 44 is coaxially connected to the central shaft 41; the track block 44 is provided with a slide rail 441, and the swing seat 45 is at one end of the housing 42 A driving pendulum rod 451 is provided, and the free end of the driving pendulum rod 451 is provided with a roller that can be rolled and connected in the sliding rail 441; a differential mechanism is connected between the rail block 44 and the central shaft 41, The differential mechanism drives the track block 44 and the central shaft 41 to form a differential motion; a bearing support 434 is provided on the outside of the inner gear 433 , and the inner gear 433 and the bearing support 434 are connected to each other. A needle roller bearing 435 without an inner ring is arranged between them; an upper fixing seat 436 is connected to the bearing support 434, the upper fixing seat 436 is rotatably connected with the central shaft 41, and the fixing seat is connected with the limit rod 16 lower end connections.

Preferably, the swing axis of the swing seat 45 is perpendicular to the central axis 41 . In this way, the swing axis of the swing seat 45 is substantially parallel to the grinding plane, so that the grinding operation on the to-be-ground plane can be better performed.

Preferably, the roller is a needle roller bearing 452 , and the roller shaft of the needle roller bearing 452 is screw-locked and installed on the driving swing rod 451 . In this way, the needle roller bearing 452 can ensure the smoothness of the roller on the sliding rail 441 , and ensure that the swing seat 45 can better swing 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 with the central shaft 41 through splines, and the second external gear 432 is fixedly connected with the track block 44 and is coaxially arranged with the central shaft 41; the outer ring gear is eccentrically arranged with the central shaft 41 and is meshed with the first external gear 431 and the second external gear 432 at the same time. ; The number of teeth of the first external gear 431 and the second external gear 432 is different. Through the cooperation of the first external gear 431 , the second external gear 432 and the inner gear 433 , there is a difference in the rotational speed between the second external gear and the second external gear 432 , so that the speed of the track block 44 is different. The rotational speed relative to the housing 42 is much smaller than the rotational speed relative to the housing 42 . Furthermore, when the swing seat 45 swings, the grinding block mounting seats 453 on two adjacent swing seats 45 are close to each other or away from each other. And the two adjacent swinging seats 45 reciprocate between the inner and outer states.

Preferably, the number of teeth of the first external gear 431 and the second external gear 432 differ by one tooth. In this way, for example, the first external gear 431 has 35 teeth, and the second external gear 432 has 36 teeth. After this setting, the housing 42 needs to rotate 36 times, and the track block 44 rotates relative to the housing 42 1 lap.

Preferably, the central shaft 41 is formed with a water passage 221 penetrating along the central shaft 41 , and a flange joint 411 connected to the lower end of the inner shaft 22 is formed on the upper end of the central shaft 41 . When grinding, water needs to be sprayed on the grinding plane to improve the grinding effect and reduce dust. The water injection through the central hole makes the structure more compact and can move with the position of the grinding head 4 .

Compared with the prior art, the present invention improves the overall stability and ensures the processing quality by adopting the seat body 1 which is integrally cast.

The above-mentioned embodiments and drawings do not limit the product form and style of the present invention, and any appropriate changes or modifications made by those of ordinary skill in the art should be regarded as not departing from the scope of the present invention.

Claims

A grinding host with good stability is characterized in that it includes a seat body, a main shaft, a grinding head and a driving motor; the main shaft is rotatably installed on the seat body, and the driving motor is fixedly installed on the seat body to The main shaft is driven to rotate, and the grinding head is installed on the lower end of the main shaft; the seat body is machined after casting.
The grinding host with good stability according to claim 1, wherein the seat body is integrally formed of cast steel.
as claimed in claim 1 A grinding host with good stability is characterized in that the base body comprises a supporting frame, a central cylinder and a motor mounting seat that are integrally connected, the central cylinder is formed in the middle of the supporting frame, and the main shaft is rotatably connected to the supporting frame. the motor mounting seat is connected to the upper end of the support frame and overhangs the outside of the support frame; the outer side wall of the support frame under the motor mounting seat is formed with a mounting fitting surface, and the mounting fitting surface A support slot is formed on the upper end.
as claimed in claim 3 A grinding host with good stability is characterized in that a mounting rib is formed on the upper edge of the motor mounting seat, and a plurality of motor mounting holes are machined on the mounting rib; Install the rib plate as described above.
as claimed in claim 3 A grinding host with good stability is characterized in that the main shaft comprises an outer shaft barrel and an inner shaft, the outer shaft barrel is rotatably connected with the central barrel, and a spline sleeve is arranged in the outer shaft barrel, An inner spline is formed on the inner wall of the spline sleeve, an outer spline is arranged on the outside of the inner shaft, and the inner shaft is connected with the spline sleeve through the spline and can follow the shaft of the outer shaft barrel. The upper end of the outer shaft barrel is connected with a driven wheel, and the driven wheel is connected with the driving wheel on the output shaft of the driving motor through a transmission component.
as claimed in claim 5 A grinding host with good stability is characterized in that an upper support bearing for supporting the outer shaft barrel is arranged on the upper part of the central cylinder; the driven wheel abuts against the inner part of the upper support bearing from top to bottom top of the circle.
as claimed in claim 5 A grinding host with good stability is characterized in that the driven wheel and the driving wheel are pulleys, and the transmission components are several transmission belts connected to the driving wheel and the driven wheel.
as claimed in claim 5 A grinding host with good stability is characterized in that a through-installation groove is arranged on the outer shaft barrel, a drive key is installed in the installation through-groove, and the drive key protrudes from the installation through-groove and is connected with the spline sleeve and the driven wheel.
as claimed in claim 5 A grinding host with good stability is characterized in that a lifting device for driving the inner shaft to rise and fall 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 It is rotatably connected with the inner shaft, the oil cylinder mounting seat is arranged on the base body, the lifting oil cylinder is fixedly connected with the oil cylinder mounting seat, and the lower end of the piston rod of the lifting oil cylinder is fixedly connected with the driving seat.
as claimed in claim 9 A grinding machine with good stability is characterized in that a water passage is formed in the center of the inner shaft, an extension pipe is connected to the upper end of the water passage, and a water injection sleeve is arranged on the upper end of the oil cylinder mounting seat, and the water injection A water injection pipe is arranged in the middle of the sleeve, the water injection pipe extends into the extension pipe from top to bottom, and the outer wall of the water injection pipe does not contact the inner wall of the extension pipe.