CN211760560U

CN211760560U - Multi-angle grinding device

Info

Publication number: CN211760560U
Application number: CN201922466679.4U
Authority: CN
Inventors: 龙晓斌; 胡海峰; 龙川
Original assignee: Oms Machinery Co Ltd
Current assignee: Oms Machinery Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-10-27
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a multi-angle grinding device, include the base and be located the grudging post on the base, the grudging post can remove along Y axle direction on the base be equipped with the movable plate on the grudging post, the movable plate can remove along Z axle direction on the grudging post, is equipped with first power supply, rotary platform on the movable plate to and drive rotatory grinding structure by rotary platform, grinding structure includes the mounting panel, is located the abrasive band on the mounting panel to and be located the abrasive band a plurality of gyro wheel on the back side, a plurality of gyro wheel rotationally install on the mounting panel, be equipped with first arch along the circumference of gyro wheel on the surface of gyro wheel, the gyro wheel can support on the back of abrasive band, thereby make the abrasive band part by the back side to the sunken ridged ridge arch that can form the grinding work piece in the front side on the abrasive band of. Therefore, the utility model has the advantages of can follow a plurality of angles to the work piece carry out the grinding, carry out the grinding to the curved surface and the edge of special-shaped curved surface, efficiency is higher, grinding effect is better.

Description

Multi-angle grinding device

Technical Field

The utility model relates to a grinding mechanism field especially relates to a multi-angle grinding device.

Background

The special-shaped curved surface part has the advantages that due to the irregularity of the surface, the surface to be ground is a curved surface or a corner, the curved surface has radian, the space of the corner is narrow, and the grinding part of a common multi-angle grinding device is horizontally arranged, so that only a plane can be ground, and the special-shaped curved surface part is difficult to grind.

Chinese patent document CN 107553276a discloses a multi-angle grinding device for a special-shaped curved surface, which comprises a machine table, a suction mechanism, a grinding mechanism and a transmission mechanism, wherein the transmission mechanism comprises a motor, a driving wheel and a tensioning unit, the motor is fixedly mounted on the machine table, the driving wheel is fixedly connected with a power output end of the motor, the tensioning unit comprises a length-adjustable adjusting rod and a tensioning wheel, the adjusting rod is horizontally mounted on the machine table, one end of the adjusting rod is fixedly connected with the machine table, and the other end of the adjusting rod is rotatably connected with the tensioning wheel; the grinding mechanism comprises an abrasive belt, a supporting rod and a contact grinding wheel, the supporting rod is horizontally arranged on the machine table, one end of the supporting rod is fixedly connected with the machine table, the other end of the supporting rod is detachably connected with the contact grinding wheel, and the driving wheel, the tensioning wheel and the contact grinding wheel are vertically arranged on the same horizontal plane; the abrasive belt is in contact with the driving wheel, the driving wheel and the side wall in contact with the grinding wheel; the suction mechanism comprises a negative pressure suction machine, a first suction pipe and a second suction pipe, the first suction pipe and the second suction pipe are communicated with the negative pressure suction machine, one end, far away from the negative pressure suction machine, of the first suction pipe is opposite to the driving wheel, and one end, far away from the negative pressure suction machine, of the second suction pipe is opposite to the contact grinding wheel.

This kind of dysmorphism curved surface multi-angle grinding device among the above-mentioned prior art can carry out abrasive machining to some large tracts of land curved surface to a certain extent, however, still have the defect at the in-process of in-service use, if to the edge of dysmorphism curved surface part, above-mentioned prior art then can't process smoothly, the use has the limitation, usually to the edge, all convert manual the polishing into, not only the effect of polishing is uneven, there is great difference, and work load is big and inefficiency, be difficult to satisfy mass production, furthermore, it can not grind through the many work pieces of a plurality of angles, be difficult to satisfy various grinding demands.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can follow a plurality of angles to the work piece carry out the grinding, to the curved surface and the edge of dysmorphism curved surface carry out grinding, efficiency is higher, polish the better multi-angle grinding device of effect.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a multi-angle grinding device, includes the base and is located the grudging post on the base, the grudging post can move along the Y axle direction on the base, be equipped with the movable plate on the grudging post, the movable plate can move along the Z axle direction on the grudging post, be equipped with first power supply, by the rotary platform of first power supply drive on the movable plate, and by the rotatory grinding structure of rotary platform drive, the grinding structure includes the mounting panel, is located the abrasive band on the mounting panel, and is located a plurality of gyro wheels on the abrasive band back side, and a plurality of gyro wheels are rotationally installed on the mounting panel, are equipped with first arch along the circumference of gyro wheel on the surface of gyro wheel, and the gyro wheel can support on the back of abrasive band, makes the abrasive band part from the back side to the positive side sunken ridge-shaped protrusion that can grind the.

As an improvement of the present invention, the roller surface is curved surface transition at the intermediate position along the axial direction to both ends of the roller.

As an improvement of the utility model, still including installing the gyro wheel drive assembly on the mounting panel, gyro wheel drive assembly includes support and second power supply, and a plurality of gyro wheel is installed on the support, the second power supply with leg joint can drive the support removes to make the gyro wheel support and lean on or keep away from the abrasive band.

As an improvement of the utility model, the support includes pedestal and a plurality of gyro wheel mount pad, the gyro wheel with the installation of gyro wheel mount pad one-to-one, the gyro wheel mount pad is installed on the pedestal, just the gyro wheel mount pad can for the pedestal slides.

As the improvement of the utility model, be equipped with third guide rail or third slider, every on the pedestal be equipped with on the gyro wheel mount pad with third guide rail or third slider complex third slider or third guide rail, thereby realize the slip of gyro wheel mount pad on the pedestal through the cooperation of third guide rail and third slider.

As the utility model discloses an improvement still includes abrasive band tensioning assembly, abrasive band tensioning assembly includes the action wheel and follows the driving wheel, the action wheel is installed with following the driving wheel on the mounting panel, the abrasive band cover is established the action wheel with follow driving wheel on and by the action wheel with follow the driving wheel tensioning.

As an improvement of the utility model, still including installing third power supply on the mounting panel, the third power supply is connected with the action wheel and drives the action wheel rotation.

As the utility model discloses an improvement still includes automatic tensioning subassembly, automatic tensioning subassembly includes pull rod, compression elastic component, locating part, and the guide slot of seting up on the mounting panel can reciprocate in this guide slot from the driving wheel installation axle, and the one end of pull rod upwards along the guide slot with from driving wheel installation hub connection, the other end passes locating part and compression elastic component along the guide slot downwards in proper order, and the locating part supports in the guide slot bottom, and when compression elastic component opened, the pull rod can pull and move down from the driving wheel installation axle.

As an improvement of the utility model, the movable plate is through first mobile device along the Z axle direction removal on the grudging post, first mobile device includes first slider to and the first guide rail that matches with the slider, first guide rail is installed on the grudging post, first slider is installed on the movable plate and can slide on the first guide rail.

The utility model discloses owing to include the base and be located the grudging post on the base, the grudging post can remove along Y axle direction on the base be equipped with the movable plate on the grudging post, the movable plate can remove along Z axle direction on the grudging post be equipped with first power supply on the movable plate, by first power supply driven rotary platform to and drive rotatory grinding structure by rotary platform, grinding structure includes the mounting panel, is located the abrasive band on the mounting panel to and be located the abrasive band a plurality of gyro wheel on the back side, a plurality of gyro wheel rotationally installs on the mounting panel the surface of gyro wheel is equipped with first arch along the circumference of gyro wheel, and the gyro wheel can support on the back of abrasive band, thereby makes the abrasive band part form the ridge arch that can grind the work piece by the back side to the positive side sunken. In the utility model, the first protrusion of the roller is supported on the back of the abrasive belt, and the roller moves and clings to the abrasive belt along with the roller, so that the local part of the abrasive belt is sunken from the back side to the front side, thereby forming the ridge protrusion capable of grinding the workpiece on the front side, therefore, the ridge protrusion formed by the abrasive belt can not only be used for grinding the curved surface, but also be used for grinding the edge, furthermore, the utility model discloses in can also adjust the multi-angle grinding device in the Y-axis and Z-axis directions, and the abrasive belt can also rotate, therefore, the utility model discloses can grind the workpiece from a plurality of different angles, thereby dealing with different grinding demands, the utility model discloses an application scope is wider, and efficiency is higher, grinding effect is better; therefore, the utility model has the advantages of can carry out the grinding to the curved surface and the edge of dysmorphism curved surface, efficiency is higher, grinding effect is better.

Drawings

Fig. 1 is a schematic plan view of a first embodiment of the present invention;

fig. 2 is a schematic structural view of the roller in fig. 1 before abutting against the abrasive belt;

fig. 3 is a schematic view of the roller of fig. 1 in a position abutting against the sanding belt;

FIG. 4 is a top view of FIG. 2;

FIG. 5 is an enlarged view of the structure at A in FIG. 4;

FIG. 6 is a top view of FIG. 3;

FIG. 7 is a schematic view of a portion of the structure of FIG. 1;

FIG. 8 is a front view of FIG. 7;

fig. 9 is a schematic view of the roller abutting against the sanding belt;

FIG. 10 is a schematic perspective view of the structure of FIG. 1, partially broken away;

FIG. 11 is a schematic perspective view of the structure of FIG. 1, partially disassembled;

fig. 12 is a schematic plan view of a second embodiment of the present invention;

FIG. 13 is a schematic view of a portion of the structure of FIG. 12;

FIG. 14 is a side view of FIG. 13;

fig. 15 is a front view of fig. 13.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

referring to fig. 1 to 11, fig. 1 to 11 disclose a first embodiment of a multi-angle grinding apparatus, which includes a base 1 and a vertical frame 2 located on the base 1, wherein the vertical frame 2 can move on the base 1 along a Y-axis direction, a moving plate 3 is disposed on the vertical frame 2, the moving plate 3 can move on the vertical frame 2 along a Z-axis direction, a first power source 40, a rotating platform 41 driven by the first power source 40, and a grinding structure driven by the rotating platform 41 to rotate are disposed on the moving plate 3, the grinding structure includes a mounting plate 51, an abrasive belt 52 located on the mounting plate 51, and a plurality of rollers 53 located on a back side of the abrasive belt 52, in the present invention, specifically, a grinding surface of the abrasive belt 52 is defined as a front side of the abrasive belt, and a back side of the grinding surface is a back side of the abrasive belt; the surface of the roller 53 is provided with a first protrusion 54 along the circumferential direction of the roller 53, and in this embodiment, specifically, as shown in fig. 4 and 5, the first protrusion 54 is disposed at a middle position 56 on the surface of the roller 53, and of course, may be disposed at other positions on the surface, which is not limited by the present invention. Roller 53 may abut against back surface 521 of abrasive belt 52, such that abrasive belt 52 is partially recessed from back surface 521 toward front surface 522 to form ridge-shaped protrusions 55 on front surface 522 of abrasive belt 52 for grinding a workpiece. A rotary platform mounting position 510 is arranged on the back surface of the mounting plate 51, the rotary platform 41 is mounted on the rotary platform mounting position 510 on the back surface of the mounting plate 51, the first power source 40 is mounted on the side edge of the rotary platform 41, the rotary platform 41 is driven by the first power source 40 to move, so that the grinding structure is driven to rotate, the rotation of the whole grinding structure can be realized, and the abrasive belt 52 of the grinding structure naturally and simultaneously rotates, so that the workpiece can be ground at multiple angles; the utility model discloses in, grudging post 2 can be followed Y axle direction and removed on base 1, movable plate 3 can be removed along Z axle direction on grudging post 2, and to the work piece of difference, the position and the angle that need polish are different, the utility model discloses can remove along Y axle direction on base 1 through rotatory effect of subassembly, grudging post 2, and movable plate 3 removes along Z axle direction on grudging post 2, through the device that this three direction was adjusted to realize the transform of the direction of whole grinding structure, the abrasive band 52 of grinding structure also can alternate direction and angle thereupon, thereby realizes carrying out the grinding to the work piece from various angles, and grinding effect is better, and the grinding targets in place more.

In this embodiment, still including installing the roller drive assembly on mounting panel 51, roller drive assembly includes support 61 and second power supply 62, and a plurality of gyro wheel 53 is installed on the support 61, in this embodiment, gyro wheel 53 has threely, and of course, the quantity of gyro wheel 53 can be installed according to the grinding demand, the utility model discloses do not do the restriction. The second power source 62 is connected to the bracket 61 and can drive the bracket 61 to move, so that the roller 53 moves against or away from the sanding belt 52, when the roller 53 is needed, the second power source 62 is driven to drive the roller 53 to move and abut against the sanding belt 52 (as shown in fig. 9), and when the roller 53 is not needed, the second power source 62 is driven to drive the bracket 61 to drive the roller 53 to reversely move and away from the sanding belt 52 (as shown in fig. 8). In the present embodiment, the second power source 62 is a cylinder.

In this embodiment, the belt tensioning assembly includes a driving wheel 81 and a driven wheel 82, the driving wheel 81 and the driven wheel 82 are mounted on the mounting plate 51, and the belt 52 is sleeved on the driving wheel 81 and the driven wheel 82 and tensioned by the driving wheel 81 and the driven wheel 82. In order to enable rotation of sanding belt 52 and thus automatic sanding of a workpiece, a third power source 83 is mounted on mounting plate 51, and third power source 83 is connected to driving wheel 81 and drives driving wheel 82 to rotate, so as to drive driven wheel 82 to move, so that sanding belt 52 can be tensioned and moved between driving wheel 81 and driven wheel 82, and roller 53 can rotate in bracket 61, and when roller 53 abuts sanding belt 52, sanding belt 52 moves, and roller 53 in contact therewith also rolls.

In this embodiment, further, the surface of the roller 53 is curved at the middle position 56 toward the two ends 57 of the roller along the axial direction, and this is designed to make the highest position of the ridge-shaped protrusion 55 curved, which is beneficial to polishing the corner with narrow space and is not easy to damage the abrasive belt 52. In the grinding process of the present invention, the abrasive belt 52 is tensioned, the roller 53 approaches the abrasive belt 52 and the roller 53 abuts against the back surface 521 of the abrasive belt 52, so that the abrasive belt 52 is partially recessed from the back surface 521 to the front surface 522 side to form a ridge-shaped protrusion 55 (as shown in fig. 6) capable of grinding a workpiece at the front surface 522 side, in the present invention, the first protrusion 54 is disposed on the surface of the roller 53 along the circumferential direction of the roller 53, and due to the special structure of the roller 53, when the roller 53 abuts against the back surface 521 of the abrasive belt 52, mainly the first protrusion 54 of the roller 53 abuts against the back surface 521 of the abrasive belt 52, the local portion of the abrasive belt 52 is recessed from the back surface 521 to the front surface 522 side to form a ridge-shaped protrusion 55 capable of grinding a workpiece at the front surface 522 side, and the ridge-shaped protrusion 55 is in the shape of a long and thin strip, therefore, the formed ridge-shaped protrusion 55 not only can be used for grinding a curved surface, but also, use more in a flexible way, consequently, the utility model provides an abrasive band not only can be used for the grinding of curved surface, can also be used for the grinding of the comparatively narrow and small edge in space, for prior art, the utility model discloses an application scope is wider.

In this embodiment, the automatic tensioning device further includes an automatic tensioning assembly, the automatic tensioning assembly includes a pull rod 72, a compression elastic member 73, a limiting member 74, and a guide groove 71 formed in the mounting plate 51, in this embodiment, the compression elastic member 73 is a spring in a compressed state, the guide groove 71 is in an inverted U shape, the guide groove 71 penetrates through the edge of the mounting plate 51, a notch of the guide groove 71 is located at the bottom edge of the mounting plate 51, the driven wheel mounting shaft 84 can move up and down in the guide groove 71, one end of the pull rod 72 is connected to the driven wheel mounting shaft 84 along the guide groove 71, the other end of the pull rod 72 sequentially penetrates through the limiting member 74 and the compression elastic member 73 along the guide groove 71, the limiting member 74 abuts against the notch of the guide groove 71, the spring in the compressed state always has an external tension, and therefore, the spring always drives the pull rod 72 to pull, driven wheel 82 has a tendency to move downward by driven wheel mounting shaft 84 so that belt 52 is always in tension. The utility model discloses in, the automatic tensioning subassembly aim at of setting, among the prior art, after using a period, thereby abrasive band 52 yielding pine can not the tensioning at action wheel 81 and from between driving wheel 82, and the utility model discloses in, under the effect of automatic tensioning subassembly, just can make abrasive band 52 be the state of tensioning all the time to do not influence the effect of grinding.

In this embodiment, the moving plate 3 moves on the vertical frame 2 along the Z-axis direction through a first moving device, the first moving device includes a first slider and a first guide rail 21 matched with the first slider, the first guide rail 21 is mounted on the vertical frame 2, the first slider is disposed on the moving plate 3 and can slide on the first guide rail 21, in this embodiment, specifically, the moving plate 3 is driven by a first driving device, the first driving device includes a screw 91, a nut 92, a connecting block 90, a screw end driven wheel 93, a fourth power source end driven wheel 94, a belt 95 and a fourth power source 96, the screw 91, the screw end driven wheel 93, the fourth power source end driven wheel 94 and the fourth power source 96 are mounted on the vertical frame 2, specifically, the screw end driven wheel 93 is disposed at one end of the screw 91, the fourth power source end driving wheel 94 is arranged at the output end of a fourth power source 96, the belt 95 is sleeved on the screw rod end driven wheel 93 and the fourth power source end driving wheel 94 and is tensioned by the screw rod end driven wheel 93 and the fourth power source end driving wheel 94, the screw rod 91 penetrates through the nut 92, the nut 92 is arranged in the connecting block 90, the connecting block 90 is fixed on the moving plate 3, the fourth power source end driving wheel 94 is driven by the fourth power source 96 to rotate, the screw rod end driven wheel 93 rotates along with the screw rod end driven wheel under the action of the belt 95, the screw rod 91 is driven to rotate, the nut 92 and the connecting block 90 move relative to the screw rod 91, and the moving plate 3 can be driven to move up and down along the first guide rail 21. In this embodiment, the purpose of driving the moving plate 3 to move up and down along the first guide rail 21 is: during cutting, the grinding of the cutter handle of the cutter is adjusted in the vertical direction, so that the cutting degree and the cutting effect of the cutter handle can be controlled.

In this embodiment, the movement of the stand 2 on the base 1 along the Y-axis direction is realized by a second moving device, the second moving device includes a second slider 11 and a second guide rail 12 matched with the second slider 11, the second guide rail 12 is installed on the base 1, the second slider 11 is disposed at the bottom of the stand 2, and the second slider 11 can slide on the second guide rail 12.

The present invention can also be configured as a second embodiment (as shown in fig. 12 to 15), which is substantially the same as the first embodiment, except that the bracket 61 comprises a base 611 and a plurality of roller mounting seats 612, the surface of the roller 53 has different ranges of curved surface transition from the middle position 56 to the two ends 57 of the roller along the axial direction, so as to form the roller 53 having different sizes of the first protrusion 54, as shown in fig. 13, the surface of the five rollers 53 has different ranges of curved surface transition from the middle position 56 to the two ends 57 of the roller along the axial direction, so that the five rollers 53 having different sizes of the first protrusion 54 are provided, the rollers 53 having different sizes of the first protrusion 54 respectively abut against the abrasive belt 52, the protrusion range of the ridge protrusion 55 formed on the front surface 522 side of the abrasive belt 52 is also different, so as to meet different grinding requirements, thereby causing the workpiece to have different grinding effects. The rollers 53 and the roller mounting seats 612 are installed in a one-to-one correspondence, the roller mounting seats 612 are installed on the base body 611, and the roller mounting seats 612 can slide relative to the base body 611. Specifically, a third guide rail or a third slider 64 is disposed on the base body 611, and a third slider or a third guide rail that is matched with the third guide rail or the third slider 64 is disposed on each roller mounting base 612, in this embodiment, specifically, the third slider 64 is disposed on the base body 611, a third guide rail (not visible in the drawing) that is matched with the third slider 64 is disposed on each roller mounting base 612, and the roller mounting base 612 slides on the base body 611 through the matching of the third guide rail and the third slider. The utility model discloses when using, according to the grinding demand, select corresponding gyro wheel 53, pull out bolt 63, remove the gyro wheel mount pad 612 at this selected gyro wheel 53 place, make this gyro wheel 53 remove to the back side of abrasive band 52, utilize locating pin 63 to fix gyro wheel mount pad 612 on the pedestal 611, carry out relevant work of polishing again. In this embodiment, set up simultaneously the gyro wheel 53 that multiple can produce different grinding effects, can supply the operator to select in a flexible way, application scope is wider to convenient operation only needs just can switch the gyro wheel 53 of the difference of the size of the scope of curved surface transition through removing, and does not need frequently to dismantle the installation and trade the wheel, has improved work efficiency widely.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. A multi-angle grinding device is characterized by comprising a base (1) and a vertical frame (2) positioned on the base (1), wherein the vertical frame (2) can move on the base (1) along the Y-axis direction, a moving plate (3) is arranged on the vertical frame (2), the moving plate (3) can move on the vertical frame (2) along the Z-axis direction, a first power source (40), a rotating platform (41) driven by the first power source (40) and a grinding structure driven by the rotating platform (41) to rotate are arranged on the moving plate (3), the grinding structure comprises a mounting plate (51), an abrasive belt (52) positioned on the mounting plate (51) and a plurality of rollers (53) positioned on the back surface (521) side of the abrasive belt (52), the rollers (53) are rotatably arranged on the mounting plate (51), first bulges (54) are arranged on the surfaces of the rollers (53) along the circumferential direction of the rollers (53), the roller (53) can abut against the back surface (521) of the abrasive belt (52), so that the abrasive belt (52) is partially recessed from the back surface (521) side to the front surface (522) side, and ridge-shaped protrusions (55) capable of grinding workpieces are formed on the front surface (522) side of the abrasive belt (52).

2. A multi-angle grinding apparatus according to claim 1, characterized in that the surface of the roller (53) is curved axially towards the ends (57) of the roller at an intermediate position (56).

3. The multi-angle grinding apparatus according to claim 1 or 2, further comprising a roller driving assembly mounted on the mounting plate (51), the roller driving assembly comprising a bracket (61) and a second power source (62), a plurality of rollers (53) being mounted on the bracket (61), the second power source (62) being connected to the bracket (61) and driving the bracket (61) to move so that the rollers (53) abut against or move away from the sanding belt (52).

4. The multi-angle grinding device according to claim 3, wherein the bracket (61) comprises a base body (611) and a plurality of roller mounting seats (612), the rollers (53) are mounted in one-to-one correspondence with the roller mounting seats (612), the roller mounting seats (612) are mounted on the base body (611), and the roller mounting seats (612) are slidable relative to the base body (611).

5. The multi-angle grinding device according to claim 4, wherein a third guide rail or a third slide block (64) is provided on the base body (611), a third slide block or a third guide rail which is matched with the third guide rail or the third slide block (64) is provided on each roller mounting seat (612), and the sliding of the roller mounting seat (612) on the base body (611) is realized through the matching of the third guide rail and the third slide block.

6. The multi-angle grinding device according to claim 1 or 2, further comprising a belt tensioning assembly, wherein the belt tensioning assembly comprises a driving wheel (81) and a driven wheel (82), the driving wheel (81) and the driven wheel (82) are mounted on the mounting plate (51), and the belt (52) is sleeved on the driving wheel (81) and the driven wheel (82) and tensioned by the driving wheel (81) and the driven wheel (82).

7. The multi-angle grinding device according to claim 6, further comprising a third power source (83) mounted on the mounting plate (51), wherein the third power source (83) is connected with the driving wheel (81) and drives the driving wheel (81) to rotate.

8. The multi-angle grinding device according to claim 6, further comprising an automatic tensioning assembly, wherein the automatic tensioning assembly comprises a pull rod (72), a compression elastic member (73), a limiting member (74), and a guide groove (71) formed in the mounting plate (51), the driven wheel mounting shaft (84) can move up and down in the guide groove (71), one end of the pull rod (72) is connected with the driven wheel mounting shaft (84) along the guide groove (71) upwards, the other end of the pull rod (72) sequentially passes through the limiting member (74) and the compression elastic member (73) along the guide groove (71) downwards, the limiting member (74) abuts against the bottom of the guide groove (71), and when the compression elastic member (73) is opened, the pull rod (72) can pull the driven wheel mounting shaft (84) to move downwards.

9. The multi-angle grinding device according to claim 1 or 2, wherein the moving plate (3) is moved on the stand (2) in the Z-axis direction by a first moving means including a first slider, and a first guide (21) matched with the slider, the first guide (21) being mounted on the stand (2), and the first slider being mounted on the moving plate (3) and being slidable on the first guide (21).