CN112157492A

CN112157492A - Shaft grinding equipment

Info

Publication number: CN112157492A
Application number: CN202011137736.5A
Authority: CN
Inventors: 张家
Original assignee: Wenzhou Fenjia Technology Co Ltd
Current assignee: Wenzhou Fenjia Technology Co Ltd
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-01-01

Abstract

The invention relates to the field of grinding devices, in particular to shaft type grinding equipment which comprises a box body, wherein a feed inlet with a right opening is arranged in the box body, the feed inlet is upwards communicated with an upper rotating cavity, a fixed box fixedly connected to the box body is arranged in the upper rotating cavity, a positioning cavity is arranged in the fixed box, a positioning block capable of sliding up and down is arranged between the left end wall and the right end wall of the positioning cavity, an upper feeding shaft penetrating through the fixed box is rotatably arranged between the front end wall and the rear end wall of the upper rotating cavity, and an upper feeding wheel is fixedly arranged between the upper feeding shaft and the fixed box. Meanwhile, the feeding speed can be adjusted through the feeding device, so that the working efficiency is improved, and the machining precision is also ensured.

Description

Shaft grinding equipment

Technical Field

The invention relates to the field of grinding devices, in particular to shaft type grinding equipment.

Background

The grinding is a processing method for cutting off redundant materials on a workpiece by using an abrasive material and a grinding tool, the grinding processing method has various forms according to different process purposes and requirements, and in order to meet development requirements, the grinding technology develops towards precision, low roughness, high efficiency, high speed and automatic grinding. The grinding processing method has a plurality of forms, mainly grinding by using a grinding wheel in production, and currently, cylindrical grinding is mostly adopted for grinding shaft parts, and the grinding depth cannot be automatically adjusted according to the change of the shaft diameter, so that a shaft grinding device is needed to be arranged to solve the problems.

Disclosure of Invention

The invention aims to provide a shaft grinding device which can overcome the defects in the prior art, so that the practicability of the device is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to shaft grinding equipment which comprises a box body, wherein a feed inlet with a rightward opening is arranged in the box body, the feed inlet is upwards communicated with an upper rotating cavity, a fixed box fixedly connected to the box body is arranged in the upper rotating cavity, a positioning cavity is arranged in the fixed box, a positioning block capable of sliding up and down is arranged between the left end wall and the right end wall of the positioning cavity, an upper feeding shaft penetrating through the fixed box is rotatably arranged between the front end wall and the rear end wall of the upper rotating cavity, an upper feeding wheel is fixedly arranged between the fixed boxes by the upper feeding shaft, a positioning rod which is in threaded connection with the upper end surface of the fixed box and extends upwards out of the box body is arranged in the positioning cavity, a positioning spring is fixedly arranged between the positioning rod and the upper end surface of the positioning block in the positioning cavity, a positioning rotary disc is fixedly arranged outside the, a transmission cavity is arranged in the box body, a gear transmission cavity is arranged in the box body, the motor is in power connection with a motor shaft which extends upwards and penetrates through the transmission cavity to the upper end wall of the gear transmission cavity, a transmission device is arranged in the transmission cavity of the motor shaft, a worm and worm wheel cavity is arranged in the box body, a worm wheel shaft which extends upwards and extends to the lower end wall of the gear transmission cavity is rotatably arranged between the upper end wall and the lower end wall of the worm and worm wheel cavity, a feeding device is arranged in the gear transmission cavity of the worm wheel shaft, a grinding cavity is arranged in the feeding hole, the grinding cavity is communicated leftwards with a discharging hole which penetrates through the left end wall of the box body, a fixed disc is fixedly arranged between the upper end wall and the lower end wall of the grinding cavity, a fixed plate is fixedly arranged on the fixed disc, the grinding machine is characterized in that a rotating disc connecting rod is fixedly arranged on the rotating disc, a rotating positioning block is in threaded connection with the incomplete threaded rod, a connecting rod rotating shaft extending leftwards is fixedly arranged on the rotating positioning block, the connecting rod rotating shaft is hinged to the rotating disc connecting rod, and a grinding device for grinding is arranged in the grinding cavity of the rotating disc.

Further, the transmission device comprises a spline fixedly arranged in the transmission cavity of the motor shaft, the motor shaft is slidably provided with a sliding shaft sleeve matched with the spline, a cylinder is arranged in the box body, the cylinder is in power connection with a push rod extending upwards into the transmission cavity, the push rod is fixedly provided with a push plate in the transmission cavity, the left end of the push plate is rotatably connected on the sliding shaft sleeve, the incomplete threaded rod is provided with a small bevel gear in the bevel gear transmission cavity, the rear end wall of the bevel gear transmission cavity is rotatably provided with a fixed shaft sleeve extending backwards into the box body, the fixed shaft sleeve is sleeved in the bevel gear transmission cavity and is provided with a large bevel gear meshed with the small bevel gear, an overload protection cavity is arranged in the fixed shaft sleeve, and the overload protection cavity is rotatably provided with a polishing positioning shaft extending rightwards into the transmission cavity, six small supporting rods are fixedly arranged in the overload protection cavity of the polishing positioning shaft, the tail ends of the small supporting rods are fixedly provided with rotating springs, the tail ends of the rotating springs are fixedly provided with rotating stop blocks, the inner wall of the fixed shaft sleeve is fixedly provided with six fixed stop blocks for stopping the rotating stop blocks from rotating, the sliding shaft sleeve is fixedly provided with a bidirectional bevel gear, the tail ends of the polishing positioning shaft are fixedly provided with polishing shaft bevel gears meshed with the bidirectional bevel gears, a belt transmission cavity is arranged in the box body, a transmission shaft extending forwards into the transmission cavity is rotatably arranged between the front end wall and the rear end wall of the positioning cavity, the transmission shaft is provided with a transmission bevel gear meshed with the bidirectional bevel gear in the transmission cavity, the transmission belt wheel is fixedly provided with a transmission belt wheel in the belt transmission cavity, and a worm and worm wheel cavity, a worm shaft which extends forwards to the front end wall of the worm and worm wheel cavity is rotatably arranged between the front end wall and the rear end wall of the belt transmission cavity, a worm shaft belt wheel is fixedly arranged in the belt transmission cavity of the worm shaft, and the worm shaft belt wheel is in transmission connection with the transmission belt wheel through a belt. The worm shaft is fixedly provided with a worm in the worm and worm wheel cavity, and the worm wheel shaft is fixedly provided with a worm wheel meshed with the worm in the worm and worm wheel cavity.

Further, feed arrangement includes the fixed ring gear backup pad that is provided with of gear drive chamber lower extreme wall, the fixed feeding axle backup pad that is provided with the front and back symmetry of ring gear backup pad top surface, the upwards intercommunication in gear drive chamber is provided with down rotates the chamber, two it is provided with down the feeding axle to rotate between the feeding axle backup pad, the fixed feeding wheel that is provided with down on the feeding axle down, the feeding axle is in down rotate the intracavity setting down and be provided with the gear wheel, the fixed ring gear bracing piece that is provided with evenly distributed in the ring gear backup pad, slide on the ring gear bracing piece be provided with gear wheel mesh's vertical ring gear, the motor shaft is in the gear drive intracavity fixation is provided with the gear vertical ring gear surface mounting be provided with gear mesh's horizontal ring gear.

Furthermore, the grinding device comprises three grinding wheel shafts which are arranged on the fixed disc and are symmetrical with respect to the center, a positioning sliding block is arranged on the supporting disc in a sliding mode, four supporting rods which are symmetrical with respect to the center are fixedly arranged on the supporting disc, a positioning disc is fixedly arranged on the left side of each supporting rod, the positioning disc is rotatably arranged on the positioning disc and extends to the right direction on the positioning sliding block, the grinding wheel shafts are hinged to the grinding wheel shafts, the grinding wheel shafts can slide on the inner walls of the positioning sliding blocks, the left and right sides are fixedly arranged at the tail ends of the grinding wheel shafts, grinding wheel motors are fixedly arranged on the right sides, and the grinding wheel motors are connected with grinding wheel motor shafts which extend to the left side in.

The invention has the beneficial effects that: the shaft grinding equipment provided by the invention can realize the grinding process of shaft parts, the distance between grinding wheels can be automatically adjusted through the grinding device, and meanwhile, the feeding speed can be adjusted through the feeding device, so that the working efficiency is improved and the processing precision is also ensured.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of the overall structure of a shaft type grinding device of the invention.

Fig. 2 is a schematic view of the structure a-a in fig. 1.

FIG. 3 is a schematic diagram of B-B in FIG. 1.

Fig. 4 is a schematic view of the structure of C-C in fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The shaft grinding equipment disclosed by the attached figures 1-4 comprises a box body 11, a feed inlet 10 with a rightward opening is arranged in the box body 11, an upper rotating cavity 12 is upwards communicated with the feed inlet 10, a fixed box 14 fixedly connected to the box body 11 is arranged in the upper rotating cavity 12, a positioning cavity 17 is arranged in the fixed box 14, a positioning block 15 capable of sliding up and down is arranged between the left end wall and the right end wall of the positioning cavity 17, an upper feeding shaft 16 penetrating through the fixed box 14 is rotatably arranged between the front end wall and the rear end wall of the upper rotating cavity 12, an upper feeding wheel 13 is fixedly arranged between the fixed boxes 14 by the upper feeding shaft 16, a positioning rod 19 in threaded connection with the upper end face of the fixed box 14 and extending upwards to the outside of the box body 11 is arranged in the positioning cavity 17, a positioning spring 18 is fixedly arranged between the positioning rod 19 and the upper end face of the positioning block 15, the positioning rod 19 is fixedly provided with a positioning rotary disc 21 outside the box body 11, a motor 43 is arranged in the box body 11, a transmission cavity 75 is arranged in the box body 11, a gear transmission cavity 56 is arranged in the box body 11, the motor 43 is in power connection with a motor shaft 42 which extends upwards and penetrates through the transmission cavity 75 to the upper end wall of the gear transmission cavity 56, a transmission device 101 is arranged in the transmission cavity 75 of the motor shaft 42, a worm and worm wheel cavity 49 is arranged in the box body 11, a worm wheel shaft 48 which extends upwards and extends to the lower end wall of the gear transmission cavity 56 is rotatably arranged between the upper end wall and the lower end wall of the worm and worm wheel cavity 49, a feeding device 102 is arranged in the gear transmission cavity 56 of the worm wheel shaft 48, a grinding cavity 24 is arranged in the feeding port 10, the grinding cavity 24 is communicated with a discharging port 32 which penetrates through the left end wall of the box, the fixed disc 22 is fixedly provided with a fixed plate 36, a bevel gear transmission cavity 65 is arranged in the box body 11, an incomplete threaded rod 37 extending backwards into the bevel gear transmission cavity 65 is rotatably arranged on the fixed plate 36, a rotary disc connecting rod 61 is fixedly arranged on the rotary disc 23, a rotary positioning block 63 is in threaded connection with the incomplete threaded rod 37, a connecting rod rotating shaft 62 extending leftwards is fixedly arranged on the rotary positioning block 63, the connecting rod rotating shaft 62 is hinged with the rotary disc connecting rod 61, and a grinding device 103 for grinding is arranged in the grinding cavity 24 of the rotary disc 23.

Advantageously, the transmission device 101 comprises the motor shaft 42 fixedly provided with a spline 41 in the transmission cavity 75, the motor shaft 42 is slidably provided with a sliding sleeve 20 engaged with the spline 41, the box 11 is provided with a cylinder 44 therein, the cylinder 44 is in power connection with a push rod 45 extending upward into the transmission cavity 75, the push rod 45 is fixedly provided with a push plate 47 in the transmission cavity 75, the left end of the push plate 47 is rotatably connected to the sliding sleeve 20, the incomplete threaded rod 37 is provided with a small bevel gear 64 in the bevel gear transmission cavity 65, the rear end wall of the bevel gear transmission cavity 65 is rotatably provided with a fixed sleeve 38 extending backward into the box 11, the fixed sleeve 38 is provided with a large bevel gear 66 engaged with the small bevel gear 64 in the bevel gear transmission cavity 65, and an overload protection cavity 80 is provided in the fixed sleeve 38, a polishing positioning shaft 39 extending rightwards into the transmission cavity 75 is rotatably arranged in the overload protection cavity 80, six small support rods 77 are fixedly arranged in the overload protection cavity 80 of the polishing positioning shaft 39, a rotating spring 78 is fixedly arranged at the tail end of each small support rod 77, a rotating stop 79 is fixedly arranged at the tail end of each rotating spring 78, six fixed stops 76 for stopping the rotation of the rotating stop 79 are fixedly arranged on the inner wall of the fixed shaft sleeve 38, a bidirectional bevel gear 46 is fixedly arranged on the sliding shaft sleeve 20, a polishing shaft bevel gear 40 meshed with the bidirectional bevel gear 46 is fixedly arranged at the tail end of the polishing positioning shaft 39, a belt transmission cavity 71 is arranged in the box body 11, a transmission shaft 68 extending forwards into the transmission cavity 75 is rotatably arranged between the front end wall and the rear end wall of the positioning cavity 17, and a transmission bevel gear 67 meshed with the bidirectional bevel gear 46 is arranged in the transmission cavity 75 of the transmission shaft 68, the transmission belt wheel 69 is fixedly provided with a transmission belt wheel 69 in the belt transmission cavity 71, the box body 11 is internally provided with a worm and worm wheel cavity 49, a worm shaft 73 which extends forwards to the front end wall of the worm and worm wheel cavity 49 is rotatably arranged between the front end wall and the rear end wall of the belt transmission cavity 71, the worm shaft 73 is fixedly provided with a worm shaft belt wheel 74 in the belt transmission cavity 71, and the worm shaft belt wheel 74 is in transmission connection with the transmission belt wheel 69 through a belt 70. The worm shaft 73 is fixedly provided with a worm 72 in the worm and worm wheel cavity 49, and the worm wheel shaft 48 is fixedly provided with a worm wheel 59 engaged with the worm 72 in the worm and worm wheel cavity 49.

Advantageously, the feeding device 102 comprises a toothed ring support plate 60 fixedly arranged on the lower end wall of the gear transmission chamber 56, the top surface of the gear ring supporting plate 60 is fixedly provided with a front and back symmetrical feeding shaft supporting plate 53, the gear transmission cavity 56 is upwards communicated with a lower rotating cavity 50, a lower feeding shaft 51 is rotatably arranged between the two feeding shaft supporting plates 53, a lower feeding wheel 52 is fixedly arranged on the lower feeding shaft 51, a big gear 81 is fixedly arranged on the lower feeding shaft 51 in the lower rotating cavity 50, the toothed ring supporting plate 60 is fixedly provided with toothed ring supporting rods 57 which are uniformly distributed, the toothed ring supporting rods 57 are slidably provided with vertical ring gears 54 which are meshed with the large gears 81, the motor shaft 42 is fixedly provided with a gear 58 in the gear transmission cavity 56, and the outer surface of the vertical ring gear 54 is fixedly provided with a transverse ring gear 55 meshed with the gear 58.

Beneficially, the grinding device 103 includes three grinding wheel shafts 25 symmetrically arranged with respect to the center on the fixed disk 22, a positioning slider 33 is slidably arranged on the supporting disk 28, four supporting rods 26 symmetrically arranged with respect to the center are fixedly arranged on the supporting disk 28, a positioning disk 27 is fixedly arranged on the left side of the supporting rods 26, a grinding wheel shaft 35 which can slide on the inner wall of the positioning slider 33 is rotatably arranged on the positioning disk 27, a left-right symmetrical 83 is fixedly arranged at the tail end of the grinding wheel shaft 35, a grinding wheel motor 31 is fixedly arranged in the right side 83, the grinding wheel motor 31 is in power connection with a grinding wheel motor shaft 30 which extends leftwards to the left side in the 83, and a grinding wheel 29 is fixedly arranged between two grinding wheel shafts 83 of the grinding wheel motor shaft 30.

The fixing and connecting method in this embodiment includes, but is not limited to, bolting, welding, and the like.

As shown in fig. 1-4, the polishing shaft bevel gear 40 is engaged with the bidirectional bevel gear 46 in the initial state of the apparatus of the present invention.

Sequence of mechanical actions of the whole device:

before the device starts to work, the positioning rotary table 21 is rotated according to the diameter of the shaft to be ground, the distance between the upper feeding wheel 13 and the lower feeding wheel 52 is adjusted, and the shaft to be ground is fed from the feeding hole 10.

When the device of the present invention starts to work, the grinding wheel motor 31 is started to drive the grinding wheel motor shaft 30 to rotate, so as to drive the grinding wheel 29 to rotate, and the grinding of the outer surface of the shaft starts, and at the same time, the motor 43 is started to drive the motor shaft 42 to rotate, so as to drive the gear 58 to rotate, the transverse ring gear 55 is driven to rotate through gear engagement, so as to drive the vertical ring gear 54 to rotate, the bull gear 81 is driven to rotate through gear engagement, so as to drive the lower feed wheel 52 to rotate to start feeding, and at the same time, the motor shaft 42 rotates to drive the sliding shaft sleeve 20 to rotate, so as to drive the bidirectional bevel gear 46 to rotate, the polishing shaft bevel gear 40 is driven to rotate through bevel gear engagement, so as to drive the rotating stop 79 to rotate, and the rotating stop 79 interacts with the fixed stop 76, the incomplete threaded rod 37 is driven to rotate by bevel gear engagement, the rotary positioning block 63 moves leftwards on the incomplete threaded rod 37 by threaded connection, so as to drive the rotating disc 23 to rotate clockwise, so as to drive the positioning disc 27 to rotate, so as to drive the grinding wheel 35 to rotate around the grinding wheel shaft 25, so as to drive the polishing positioning shaft 39 to rotate towards the direction close to the center of the circle of the rotating disc 23 until the rotating disc 23 contacts with the outer surface of the shaft to start grinding, the polishing positioning shaft 39 cannot drive the fixed stop block 76 to rotate to start idle rotation under the action of the rotating spring 78, so as to start the grinding process, when the feeding speed needs to be adjusted, the air cylinder 44 is started, so as to drive the push rod 45 to move upwards, so as to drive the push plate 47 to move upwards, so as to drive the sliding shaft sleeve 20 to move upwards, so as to drive the bidirectional bevel gear 46 to be engaged with the, thereby rotating the drive shaft 68, and the worm shaft 73 via the belt 70, thereby engaging the worm 72, and the worm-gear shaft 48 via the worm-and-gear engagement, thereby rotating the ring gear support plate 60, thereby rotating the feed shaft support plate 53, thereby changing the relative angle between the lower feed wheel 52 and the upper feed wheel 13, thereby changing the feed rate.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an axle type grinding equipment, includes the box, its characterized in that: a feed inlet with a rightward opening is arranged in the box body, the feed inlet is upwards communicated with an upper rotating cavity, a fixed box fixedly connected to the box body is arranged in the upper rotating cavity, a positioning cavity is arranged in the fixed box, a positioning block capable of sliding up and down is arranged between the left end wall and the right end wall of the positioning cavity, an upper feeding shaft penetrating through the fixed box is rotatably arranged between the front end wall and the rear end wall of the upper rotating cavity, an upper feeding wheel is fixedly arranged between the fixed boxes by the upper feeding shaft, a positioning rod in threaded connection with the upper end face of the fixed box and extending upwards out of the box body is arranged in the positioning cavity, a positioning spring is fixedly arranged between the positioning cavity and the upper end face of the positioning block, a positioning turntable is fixedly arranged outside the box body by the positioning rod, a motor is arranged in the box body, a gear transmission cavity is arranged in the box body, the motor is in power connection with a motor shaft which extends upwards and penetrates through the transmission cavity to the upper end wall of the gear transmission cavity, a transmission device is arranged in the transmission cavity of the motor shaft, a worm and worm wheel cavity is arranged in the box body, a worm wheel shaft which extends upwards to the lower end wall of the gear transmission cavity is rotatably arranged between the upper end wall and the lower end wall of the worm and worm wheel cavity, a feeding device is arranged in the gear transmission cavity by the worm wheel shaft, a grinding cavity is arranged in the feeding hole, the grinding cavity is communicated leftwards with a discharging hole which penetrates through the left end wall of the box body, a fixed disc is fixedly arranged between the upper end wall and the lower end wall of the grinding cavity, a fixed plate is fixedly arranged on the fixed disc, a bevel gear transmission cavity is, the grinding machine is characterized in that a rotating disc connecting rod is fixedly arranged on the rotating disc, a rotating positioning block is in threaded connection with the incomplete threaded rod, a connecting rod rotating shaft extending leftwards is fixedly arranged on the rotating positioning block, the connecting rod rotating shaft is hinged to the rotating disc connecting rod, and a grinding device for grinding is arranged in the grinding cavity of the rotating disc.

2. The shaft grinding apparatus of claim 1, wherein: the transmission device comprises a motor shaft, wherein a spline is fixedly arranged in a transmission cavity, the motor shaft is slidably provided with a sliding shaft sleeve matched with the spline, a cylinder is arranged in a box body, the cylinder is in power connection with a push rod which extends upwards into the transmission cavity, the push rod is fixedly provided with a push plate in the transmission cavity, the left end of the push plate is rotatably connected on the sliding shaft sleeve, an incomplete threaded rod is provided with a small bevel gear in the bevel gear transmission cavity, the rear end wall of the bevel gear transmission cavity is rotatably provided with a large bevel gear which extends backwards into the box body, a fixed shaft sleeve is sleeved in the bevel gear transmission cavity and is provided with a large bevel gear meshed with the small bevel gear, an overload protection cavity is arranged in the fixed shaft sleeve, and a polishing positioning shaft which extends rightwards into the transmission cavity is rotatably arranged in the, six small supporting rods are fixedly arranged in the overload protection cavity of the polishing positioning shaft, the tail ends of the small supporting rods are fixedly provided with rotating springs, the tail ends of the rotating springs are fixedly provided with rotating stop blocks, the inner wall of the fixed shaft sleeve is fixedly provided with six fixed stop blocks for stopping the rotating stop blocks from rotating, the sliding shaft sleeve is fixedly provided with a bidirectional bevel gear, the tail ends of the polishing positioning shaft are fixedly provided with polishing shaft bevel gears meshed with the bidirectional bevel gears, a belt transmission cavity is arranged in the box body, a transmission shaft extending forwards into the transmission cavity is rotatably arranged between the front end wall and the rear end wall of the positioning cavity, the transmission shaft is provided with a transmission bevel gear meshed with the bidirectional bevel gear in the transmission cavity, the transmission belt wheel is fixedly provided with a transmission belt wheel in the belt transmission cavity, and a worm and worm wheel cavity, a worm shaft which extends forwards to the front end wall of the worm and worm wheel cavity is rotatably arranged between the front end wall and the rear end wall of the belt transmission cavity, a worm shaft belt wheel is fixedly arranged on the worm shaft in the belt transmission cavity, the worm shaft belt wheel is in transmission connection with the transmission belt wheel through a belt,

the worm shaft is fixedly provided with a worm in the worm and worm wheel cavity, and the worm wheel shaft is fixedly provided with a worm wheel meshed with the worm in the worm and worm wheel cavity.

3. The shaft grinding apparatus of claim 1, wherein: feed arrangement includes the fixed ring gear backup pad that is provided with of gear drive chamber lower extreme wall, the fixed feeding axle backup pad that is provided with the front and back symmetry of ring gear backup pad top surface, the upwards intercommunication in gear drive chamber is provided with down rotates the chamber, two it is provided with down the feeding axle to rotate between the feeding axle backup pad, the fixed feeding wheel that is provided with down on the feeding axle down, the feeding axle is in down rotate the intracavity fixation and be provided with the gear wheel, the fixed ring gear bracing piece that is provided with evenly distributed in the ring gear backup pad, slide on the ring gear bracing piece be provided with gear wheel toothing's vertical ring gear, the motor shaft is in the gear drive intracavity is fixed be provided with the gear vertical ring gear surface mounting be provided with gear toothing's horizontal ring gear.

4. The shaft grinding apparatus of claim 1, wherein: the grinding device comprises three grinding wheel shafts which are arranged on the fixed disc and are symmetrical about the center, a positioning slider is arranged on the supporting disc in a sliding mode, four supporting rods which are symmetrical about the center are fixedly arranged on the supporting disc, a positioning disc is fixedly arranged on the left side of each supporting rod, the positioning disc is rotatably arranged on the positioning disc and extends to the right side of the positioning slider, the grinding wheel shafts are hinged to grinding wheel shafts which can slide on the inner wall of the positioning slider, the tail ends of the grinding wheel shafts are fixedly arranged and are symmetrical about the center, a grinding wheel motor is fixedly arranged on the right side of the grinding wheel shafts, and the grinding wheel motor is connected with a grinding wheel motor shaft which extends to the left side of the grinding wheel.