CN211760560U - A multi-angle grinding device - Google Patents

Abstract

The utility model discloses a multi-angle grinding device, which comprises a base and a vertical frame located on the base, the vertical frame can move along the Y-axis direction on the base, a moving plate is arranged on the vertical frame, and the vertical frame is arranged on the vertical frame. The moving plate can move along the Z-axis direction on the vertical frame. The moving plate is provided with a first power source, a rotating platform, and a grinding structure driven by the rotating platform to rotate. The grinding structure includes a mounting plate and a The abrasive belt, and several rollers located on the back side of the abrasive belt, the several rollers are rotatably mounted on the mounting plate, the surface of the roller is provided with a first protrusion along the circumferential direction of the roller, and the roller can abut against the back of the abrasive belt On the upper side, the abrasive belt is partially recessed from the back side to the front side to form a ridge-shaped protrusion that can grind the workpiece on the front side of the abrasive belt. Therefore, the utility model has the advantages that the workpiece can be ground from multiple angles, the curved surfaces and corners of the special-shaped curved surface can be ground, the efficiency is higher, and the grinding effect is better.

Description

A multi-angle grinding device

technical field

The utility model relates to the field of grinding mechanisms, in particular to a multi-angle grinding device.

Background technique

Due to the irregularity of the surface of the special-shaped curved surface parts, the surface to be ground is the curved surface or the corner. Therefore, only the plane can be ground, and it is difficult to grind the special-shaped curved parts.

Chinese patent document CN 107553276A discloses a special-shaped curved multi-angle grinding device, including a machine table, a suction mechanism, a grinding mechanism and a transmission mechanism, the transmission mechanism includes a motor, a driving wheel and a tensioning unit, the motor is fixed Installed on the machine table, the driving wheel is fixedly connected with the power output end of the motor, the tensioning unit includes an adjusting rod and a tensioning wheel with adjustable length, the adjusting rod is horizontally installed on the machine table, and one end of the adjusting rod is It is fixedly connected with the machine table, and the other end of the adjustment rod is rotatably connected with the tension wheel; the grinding mechanism includes an abrasive belt, a support rod and a contact grinding wheel, the support rod is installed horizontally on the machine table, and one end of the support rod is connected to the grinding wheel. The machine table is fixedly connected, the other end of the support rod is detachably connected with the contact grinding wheel, and the driving wheel, the tension wheel and the contact grinding wheel are all vertically arranged on the same horizontal plane; the abrasive belt is connected to the driving wheel, the driving wheel and the contact grinding wheel. the side walls are in contact; the suction mechanism includes a negative pressure suction machine, a first suction pipe and a second suction pipe, and the first suction pipe and the second suction pipe are both communicated with the negative pressure suction machine, and the first suction pipe and the second suction pipe are in communication with the negative pressure suction machine. One end of the suction pipe away from the negative pressure suction machine is opposite to the driving wheel, and one end of the second suction pipe away from the negative pressure suction machine is opposite to the contact grinding wheel.

The above-mentioned multi-angle grinding device for special-shaped curved surfaces in the prior art can grind some large-area curved surfaces to a certain extent, but there are still defects in the actual use process, such as for special-shaped curved surface parts. At the corners, the above-mentioned prior art cannot process smoothly, and the use has limitations. Usually, for the corners, it is converted into manual manual grinding, not only the grinding effect is uneven, there is a large difference, and the workload is Large and inefficient, it is difficult to meet mass production. In addition, it cannot be ground through multiple angles and multiple workpieces, and it is difficult to meet various grinding needs.

Utility model content

The purpose of the utility model is to provide a multi-angle grinding device capable of grinding workpieces from multiple angles, and grinding the curved surfaces and corners of special-shaped curved surfaces, with higher efficiency and better grinding effect.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: a multi-angle grinding device is provided, comprising a base and a stand on the base, the stand can move along the Y-axis direction on the base, and the stand is A moving plate is arranged on the frame, and the moving plate can move along the Z-axis direction on the vertical frame. The moving plate is provided with a first power source, a rotating platform driven by the first power source, and driven by the rotating platform. A rotating grinding structure, the grinding structure includes a mounting plate, an abrasive belt located on the mounting plate, and several rollers located on the back side of the abrasive belt, and the several rollers are rotatably mounted on the mounting plate, where the The surface of the roller is provided with a first protrusion along the circumference of the roller, and the roller can abut on the back of the abrasive belt, so that the abrasive belt is partially recessed from the back side to the front side, thereby forming a ridge shape on the front side of the abrasive belt that can grind the workpiece Raised.

As an improvement of the present invention, the surface of the roller is in the middle position along the axial direction to form a curved transition to both ends of the roller.

As an improvement of the present invention, it also includes a roller drive assembly mounted on the mounting plate, the roller drive assembly includes a bracket and a second power source, a plurality of rollers are mounted on the bracket, and the second power source is connected to the support. The support is connected and can drive the support to move, so that the roller is against or away from the abrasive belt.

As an improvement of the present invention, the bracket includes a seat body and several roller mounting seats, the rollers and the roller mounting seats are installed in a one-to-one correspondence, the roller mounting seats are installed on the seat body, and the The roller mount is slidable relative to the body.

As an improvement of the present invention, the seat body is provided with a third guide rail or a third sliding block, and each roller mounting seat is provided with a third sliding block matched with the third guide rail or the third sliding block Or the third guide rail, the sliding of the roller mounting seat on the seat body is realized through the cooperation of the third guide rail and the third sliding block.

As an improvement of the present invention, it also includes an abrasive belt tensioning assembly, the abrasive belt tensioning assembly includes a driving wheel and a driven wheel, the driving wheel and the driven wheel are mounted on the mounting plate, and the abrasive belt is sleeved There is tension on and by the drive and driven wheels.

As an improvement of the present invention, it also includes a third power source installed on the mounting plate, the third power source is connected with the driving wheel and drives the driving wheel to rotate.

As an improvement of the present invention, it also includes an automatic tensioning assembly, the automatic tensioning assembly includes a pull rod, a compression elastic member, a limit member, and a guide groove opened on the mounting plate, and the mounting shaft of the driven wheel can be installed in the The guide groove moves up and down, one end of the pull rod is connected to the driven wheel installation shaft along the guide groove upward, and the other end follows the guide groove downward through the limiter and the compression elastic piece in turn, and the limiter is pressed against the bottom of the guide groove. When the compression elastic member is opened, the pull rod can pull the driven wheel installation shaft to move down.

As an improvement of the present invention, the moving plate is moved along the Z-axis direction on the vertical frame by a first moving device, and the first moving device includes a first sliding block and a first guide rail matched with the sliding block, so The first guide rail is installed on the vertical frame, and the first sliding block is installed on the moving plate and can slide on the first guide rail.

The utility model includes a base and a stand on the base, the stand can move on the base along the Y-axis direction, and a moving plate is arranged on the stand, and the moving plate can move along the Z on the stand moving in the axial direction, the moving plate is provided with a first power source, a rotating platform driven by the first power source, and a grinding structure driven by the rotating platform to rotate. and several rollers on the back side of the abrasive belt, the several rollers are rotatably mounted on the mounting plate, the surface of the roller is provided with a first protrusion along the circumference of the roller, and the roller can abut on the mounting plate. On the back side of the abrasive belt, the abrasive belt is partially recessed from the back side to the front side so as to form a ridge-shaped protrusion that can grind the workpiece on the front side of the abrasive belt. In the utility model, the first protrusion of the roller is mainly pressed against the back of the abrasive belt, and as the roller moves to the abrasive belt, the abrasive belt is partially recessed from the back side to the front side, thereby forming a grindable surface on the front side. The ridge-shaped protrusion of the workpiece, therefore, the ridge-shaped protrusion formed by the abrasive belt in the present invention can not only be used for the grinding of curved surfaces, but also can be used for the grinding of corners. The multi-angle grinding device can be adjusted in the Y-axis and Z-axis directions, and the abrasive belt can also be rotated. Therefore, the utility model can grind the workpiece from multiple different angles to meet different grinding requirements. The utility model The utility model has the advantages of wider application range, higher efficiency and better grinding effect; therefore, the utility model has the advantages of being able to grind the curved surfaces and corners of the special-shaped curved surface, with higher efficiency and better grinding effect.

Description of drawings

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

Fig. 2 is the structural representation before the roller in Fig. 1 abuts against the abrasive belt;

Fig. 3 is the structural schematic diagram when the roller in Fig. 1 abuts against the abrasive belt;

Fig. 4 is the top view of Fig. 2;

Fig. 5 is the enlarged structure schematic diagram at A place in Fig. 4;

Fig. 6 is the top view of Fig. 3;

Fig. 7 is the partial structure schematic diagram in Fig. 1;

Fig. 8 is the front view of Fig. 7;

Fig. 9 is the structural schematic diagram when the roller is against the abrasive belt;

Fig. 10 is the three-dimensional structure schematic diagram after the partial structure in Fig. 1 is disassembled;

Fig. 11 is the three-dimensional structure schematic diagram after the partial structure of Fig. 1 is disassembled;

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

Fig. 13 is the partial structure schematic diagram in Fig. 12;

Figure 14 is a side view of Figure 13;

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

Detailed ways

Below, in conjunction with accompanying drawing and specific embodiment, the utility model is further described:

Please refer to FIGS. 1 to 11 first. FIGS. 1 to 11 disclose the first embodiment of the multi-angle grinding device, a multi-angle grinding device, comprising a base 1 and a stand 2 on the base 1, The stand 2 can move along the Y-axis direction on the base 1, and a moving plate 3 is provided on the stand 2, and the moving plate 3 can move along the Z-axis direction on the stand 2. The plate 3 is provided with 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. The grinding structure includes a mounting plate 51 and is located on the mounting plate 51 The abrasive belt 52, and several rollers 53 located on the back side of the abrasive belt 52, in the utility model, specifically, the grinding surface of the abrasive belt 52 is defined as the front of the abrasive belt, and the back of the abrasive surface is the back of the abrasive belt. ; The surface of the roller 53 is provided with a first protrusion 54 along the circumference of the roller 53. In this embodiment, specifically, as shown in Figures 4 and 5, the first protrusion 54 is provided on the surface of the roller 53. The middle position 56, of course, can also be set at other positions on the surface, which is not limited by the present invention. The rollers 53 can be pressed 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 to form a ridge-shaped protrusion 55 on the front surface 522 side of the abrasive belt 52 that can grind the workpiece. The back of the mounting plate 51 is provided with a rotating platform mounting position 510 , the rotating platform 41 is mounted on the rotating platform mounting position 510 on the back of the mounting plate 51 , and the first power source 40 is mounted on the rotating platform On the side of 41, the first power source 40 drives the rotating platform 41 to move, thereby driving the grinding structure to rotate, so as to realize the rotation of the entire grinding structure, and the abrasive belt 52 of the grinding structure also rotates naturally, so as to realize the rotation of the grinding structure. Grinding the workpiece at multiple angles; in the present utility model, the stand 2 can move along the Y-axis direction on the base 1, and the moving plate 3 can move along the Z-axis direction on the stand 2. For different workpieces , the positions and angles that need to be polished are different, the utility model can be rotated by the rotating component, the stand 2 can move along the Y-axis direction on the base 1, and the moving plate 3 can move on the stand 2 along the Z-axis direction , through these three direction adjustment devices, the direction of the entire grinding structure can be changed, and the abrasive belt 52 of the grinding structure can also change the direction and angle accordingly, so as to realize the grinding and grinding of the workpiece from various angles. The cutting effect is better, and the grinding is more in place.

In this embodiment, it also includes a roller drive assembly mounted on the mounting plate 51. The roller drive assembly includes a bracket 61 and a second power source 62. Several rollers 53 are installed on the bracket 61. In this embodiment, There are three rollers 53. Of course, the number of rollers 53 can be installed according to grinding requirements, which is not limited by the present invention. The second power source 62 is connected with the bracket 61 and can drive the bracket 61 to move, so that the roller 53 moves against or away from the abrasive belt 52. When the roller 53 is required, the second power source 62 is driven to drive The roller 53 moves and abuts on the abrasive belt 52 (as shown in FIG. 9 ). When the roller 53 is not needed, the second power source 62 is driven, so that the bracket 61 drives the roller 53 to move in the reverse direction and away from the abrasive belt 52 (as shown in FIG. 9 ). 8), in this embodiment, the roller 53 is automatically controlled to move closer to or away from the abrasive belt, which is more convenient to operate. In this embodiment, the second power source 62 is a cylinder.

In this embodiment, the abrasive 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 abrasive belt 52 is sleeved on the driving wheel 82. The pulley 81 and the driven pulley 82 are tensioned on and by the drive pulley 81 and the driven pulley 82 . In order to enable the abrasive belt 52 to rotate and realize automatic grinding of the workpiece, a third power source 83 is installed on the mounting plate 51 . The third power source 83 is connected to the driving wheel 81 and drives the driving wheel 82 to rotate, thereby driving The driven wheel 82 moves so that the abrasive belt 52 can be tensioned and moved between the driving wheel 81 and the driven wheel 82. The roller 53 can rotate in the bracket 61. When the roller 53 is in contact with the abrasive belt 52, the abrasive belt 52 moves, and the roller 53 in contact with it also rolls.

In this embodiment, further, the surface of the roller 53 transitions to the two ends 57 of the roller at the intermediate position 56 in the axial direction. The curved surface is favorable for grinding the corners with relatively narrow space, and at the same time, it is not easy to damage the abrasive belt 52 . When the utility model is grinding, the abrasive belt 52 is tensioned, the roller 53 is close to the abrasive belt 52 and the roller 53 is pressed against the back side 521 of the abrasive belt 52, so that the abrasive belt 52 is partially recessed from the back side 521 side to the front side 522 side, so that the The front 522 side is formed with a ridge-shaped protrusion 55 (as shown in FIG. 6 ) that can grind the workpiece. In the present invention, since the surface of the roller 53 is provided with the first protrusion 54 along the circumferential direction of the roller 53, the roller 53 With this special structure, when the roller 53 abuts on the back side 521 of the abrasive belt 52, the first protrusion 54 of the roller 53 is mainly pressed against the back side 521 of the abrasive belt 52, and a part of the abrasive belt 52 is laterally from the back side 521 to the front side. The 522 side is concave to form a ridge-shaped protrusion 55 on the front side 522 that can grind the workpiece. The ridge-shaped protrusion 55 is in the shape of an elongated strip. Therefore, the formed ridge-shaped protrusion 55 can not only carry out special-shaped curved surface Grinding, and can also be used for the grinding of parts with relatively narrow space such as corners, which is more flexible to use. Therefore, the abrasive belt in the present invention can not only be used for the grinding of curved surfaces, but also can be used for space. Compared with the prior art, the scope of application of the present invention is wider for grinding at relatively narrow corners.

In this embodiment, an automatic tensioning assembly is also included. The automatic tensioning assembly includes a pull rod 72 , a compression elastic member 73 , a limiting member 74 , and a guide groove 71 opened on the mounting plate 51 . In this embodiment, , the compression elastic member 73 is a spring, and is a spring in a compressed state, the guide groove 71 is an inverted U shape, the guide groove 71 penetrates to the edge of the mounting plate 51, and the notch of the guide groove 71 is located at On 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 upward, and the other end follows the guide groove 71 downward in sequence. Passing through the limiting member 74 and the compression elastic member 73, the limiting member 74 is against the notch of the guide groove 71, and the spring in the compressed state always has external tension, so the spring always drives the pull rod 72 to pull the driven wheel mounting shaft 84 Moving downward, the driven wheel 82 tends to move downward under the action of the driven wheel mounting shaft 84, so that the abrasive belt 52 is always in a state of tension. In the present invention, the purpose of the automatic tensioning assembly is that, in the prior art, after a period of use, the abrasive belt 52 is easily deformed and loosened so that it cannot be tensioned between the driving wheel 81 and the driven wheel 82, while the utility model In the new type, under the action of the automatic tensioning component, the abrasive belt 52 can always be in a tensioned state, so that the grinding effect is not affected.

In this embodiment, the moving plate 3 is moved along the Z-axis direction on the stand 2 by a first moving device, and the first moving device includes a first sliding block and a first guide rail matched with the first sliding block. 21. The first guide rail 21 is installed on the stand 2, and the first sliding block is arranged on the moving plate 3 and can slide on the first guide rail 21. In this embodiment, specifically, the The moving plate 3 is driven by a first driving device, and the first driving device includes a screw rod 91, a nut 92, a connecting block 90, a screw end driven wheel 93, a fourth power source end driving wheel 94, a belt 95 and The fourth power source 96, the screw rod 91, the screw end driven wheel 93, the fourth power source end driving wheel 94 and the fourth power source 96 are mounted on the stand 2, specifically, the screw rod end The driven wheel 93 is arranged on one end of the screw rod 91 , the fourth power source end driving wheel 94 is arranged at the output end of the fourth power source 96 , and the belt 95 is sleeved on the screw end driven wheel 93 and the fourth power source 96 . The power source end driving wheel 94 is tensioned by the screw end driven wheel 93 and the fourth power source end driving wheel 94, the screw rod 91 passes through the nut 92, and the nut 92 is arranged in the connecting block 90, The connecting block 90 is fixed on the moving plate 3, and the fourth power source end driving pulley 94 is driven to rotate by the fourth power source 96. Under the action of the belt 95, the screw end driven pulley 93 also rotates accordingly. , thereby driving the screw rod 91 to rotate, and the nut 92 and the connecting block 90 move relative to the screw rod 91 , thereby driving the moving plate 3 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 to adjust the grinding of the handle of the tool in the vertical direction during cutting, so as to control the degree of cutting and the effect of the handle. .

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, and the second moving device includes a second sliding block 11 and a second sliding block 11 that matches The second guide rail 12 , the second guide rail 12 is installed on the base 1 , the second sliding block 11 is arranged at the bottom of the stand 2 , and the second sliding block 11 can be on the second guide rail 12 Sliding, in this embodiment, specifically, the stand 2 is driven by a second driving device. In this embodiment, the second driving device has the same structure as the first driving device, which will not be repeated here. .

The present invention can also be set to a second embodiment (as shown in FIGS. 12 to 15 ). The second embodiment is substantially the same as the first embodiment, except that the bracket 61 includes a seat body 611 and several roller mounting seats 612, the surface of the roller 53 at the intermediate position 56 along the axial direction of the two ends 57 of the roller transitions to the different sizes of the curved surfaces, so as to form the rollers 53 with different sizes of the first protrusions 54, As shown in FIG. 13 , the sizes of the transitions of the surfaces of the five rollers 53 to the curved surfaces of the two ends 57 of the rollers at the intermediate position 56 in the axial direction are all different, so there are five types of rollers 53 with different sizes of the first protrusions 54 . The rollers 53 with different protrusions 54 abut on the abrasive belt 52 respectively, and the ridge-shaped protrusions 55 formed on the front surface 522 side of the abrasive belt 52 have different protrusion amplitudes, so it can meet different grinding requirements, thereby Make the workpiece form different grinding effects. The rollers 53 are installed in a one-to-one correspondence with the roller mounting seat 612 , the roller mounting seat 612 is mounted on the seat body 611 , and the roller mounting seat 612 can slide relative to the seat body 611 . Specifically, the seat body 611 is provided with a third guide rail or a third sliding block 64 , and each roller mounting seat 612 is provided with a third sliding block that cooperates with the third guide rail or the third sliding block 64 . Or the third guide rail, in this embodiment, specifically, the seat body 611 is provided with a third sliding block 64 , and each of the roller mounting seats 612 is provided with a third sliding block 64 that cooperates with the third sliding block 64 . For the guide rail (not visible in the figure), the sliding of the roller mounting seat 612 on the seat body 611 is realized through the cooperation of the third guide rail and the third sliding block. When the utility model is in use, according to the grinding requirements, select the corresponding roller 53, pull out the latch 63, move the roller mounting seat 612 where the selected roller 53 is located, and make the roller 53 move to the back side of the abrasive belt 52, The roller mounting seat 612 is fixed on the seat body 611 by the positioning pin 63, and then the related grinding work is performed. In this embodiment, a variety of rollers 53 that can produce different grinding effects are provided at the same time, which can be flexibly selected by the operator, has a wider application range, and is easy to operate. It only needs to move to switch the size of the surface transition range. Different rollers 53 do not need to be disassembled and installed frequently to change the wheels, which greatly improves the work efficiency.

For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all these changes and deformations should fall within the protection scope of the claims of the present invention.

Claims (9)

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).

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