KR102232025B1 - Method for alignment of brush disk - Google Patents

Abstract

Disclosed is an alignment guide method of a grinding brush disk which can be universally applied. According to the present invention, the alignment guide method of a grinding brush disk comprises: a step of coupling a plurality of extension alignment keys to extension plates of extension means while the extension plates are not extended; a step of stacking brush disks to insert the plurality of extension alignment keys into rotation prevention grooves of the brush disks; a step of arranging a lower protection plate and an upper protection plate above and below when the brush disks are completely stacked; a step of arranging a gap adjustment unit on the plurality of extension alignment keys to move the plurality of extension alignment keys from the gap adjustment unit to match the inner diameter of the brush disks; a step of coupling the plurality of extension alignment keys to the gap adjustment unit to fix the positions of the plurality of extension alignment keys; a step of rotating a rotating means forwards such that the extension plates are radially extended to the outside by a cam follower to move to precisely align the brush disks in a loose alignment state; a step of vertically pressing the stacked and aligned brush disks by a press in accordance with control of a control board; a step of rotating the rotating means backwards to easily separate the fully pressed brush disks from the extension means, and then returning the extended extension plates to the original positions; and a step of separating the brush disks while the gap adjustment unit, the extension alignment keys, the lower protection plate, and the upper protection plate are separated.

Description

How to guide the alignment of abrasive brush discs{METHOD FOR ALIGNMENT OF BRUSH DISK}

The present invention relates to a polishing brush disk, and more particularly, to a method of aligning a polishing brush disk for convenient and accurate lamination and compression in a process of laminating polishing brushes in multiple layers.

In general, steel sheets are rolled, heat treated, and cooled in the air to generate scales, which are oxides on their surface, and these scales are removed by corrosion treatment with hydrochloric acid or sulfuric acid solution after going through a pretreatment process.

The pretreatment process is a process to help increase the pickling efficiency by creating a crack in the scale of the steel plate by a mechanical method in order to increase the pickling efficiency, and the steel plate is repeatedly repeated with a tension roll or a scale breaker. Various methods are used, such as bending or spraying a steel ball on the steel plate with a shot blast to create a crack in the steel plate scale.

There are several methods known to remove scale from the steel plate using hydrochloric acid or sulfuric acid solution, but recently, pickling liquid is strongly sprayed onto the surface of the steel plate through spray nozzles arranged at regular intervals on the upper, lower, and side surfaces of the steel plate. This is because the process is widely used, and the pickling method using such a jet nozzle has an advantage of having a very high pickling efficiency compared to other pickling methods by increasing the jetting pressure of the pickling liquid.

However, even after the above-described pretreatment and pickling process, the oxide scale of the steel sheet is often still present, and thus, the surface of the steel sheet is removed at the same time as the pickling liquid is sprayed on the surface of the steel sheet or after the pickling is completed. Clean once again with a brush.

On the other hand, due to the characteristics of the steel plate polishing process, polishing defects can be reduced only when brush disks are compressed to each other and bonded to the brush roll shaft. There is an urgent need to develop a device that can automatically perform alignment and compression work.

In particular, when the diameters of the brush disks are different, there is a limitation in general use, and thus an improvement plan is also required.

The above-described technical configuration is a background technique to aid understanding of the present invention, and does not mean a conventional technique widely known in the art to which the present invention pertains.

Korean Registered Patent Publication No. 10-1160847 (Masan Co., Ltd.) 2012. 06. 22.

Accordingly, an object of the present invention is to provide an alignment guide method of a polishing brush disk that can be conveniently and accurately stacked and compressed in the process of stacking polishing brushes into multiple layers, and can be applied universally.

According to an aspect of the present invention, the step of coupling a plurality of expansion alignment keys to the expansion plate in the non-expanded state of the expansion plate of the expansion means; Stacking the plurality of expansion alignment keys into the rotation preventing grooves of each of the brush disks; Disposing a lower protective plate and an upper protective plate on the lower and upper portions, respectively, when lamination of the brush disks is completed; Disposing a gap adjusting part on the plurality of expansion alignment keys to move the plurality of expansion alignment keys in the gap adjusting part according to the inner diameter of the brush disk; Fixing the plurality of expansion alignment keys by coupling the plurality of expansion alignment keys to the gap adjustment unit; Aligning the alignment of each of the loose brush disks more precisely by rotating the rotating means forward so that each expansion plate is radially extended and moved outward by a cam follower; Pressing each of the brush disks stacked and aligned through a press in an up-down direction under the control of a control panel; Rotating the rotating means to facilitate separation of each of the brush disks on which the pressing operation has been completed from the expansion means, and then returning each of the expanded expansion plates to their original positions; And separating the brush disk while the gap adjusting part, the expansion alignment key, and the lower protection plate and the upper protection plate are separated.

The gap adjusting part may be disposed on the upper protective plate and detachably coupled to upper ends of the plurality of expansion alignment keys.

The gap adjusting unit may include a base body disposed above the plurality of expansion alignment keys and provided with body holes; And a plurality of extension bodies provided on the base body so as to correspond to the plurality of extension alignment keys to guide movement of the plurality of extension alignment keys and to which the plurality of extension alignment keys are coupled, the plurality of extension bodies There is provided a moving guide groove into which a plurality of the expansion alignment keys are inserted, a plurality of guide groove fastening holes are provided in the moving guide groove, and the gap adjusting part is provided with a plurality of expansion alignment through the plurality of guide groove fastening holes. Can be detachably coupled to the key.

In the embodiments of the present invention, a plurality of expansion alignment keys are moved from the gap adjustment unit to match the inner diameter of the brush disk by arranging the gap adjustment unit on a plurality of expansion alignment keys, and a plurality of expansion alignment keys are coupled to the gap adjustment unit. By fixing the position of the plurality of expansion alignment keys, it is possible to conveniently and accurately stack the polishing brushes in the process of stacking them in multiple layers, and to compress them.

1 is a flowchart schematically illustrating a method of guiding an alignment of a polishing brush disk according to an exemplary embodiment of the present invention.
2 is a schematic block diagram of a main part applied to the method of guiding the alignment of the disk shown in FIG. 1.
3 is a diagram schematically illustrating a polishing apparatus applied to FIG. 1.
4 is an exploded view showing a process in which the brush disk is stacked on the expansion means shown in FIG. 3 and the compression protection means is arranged.
5 is a view showing a state in which the brush disk is stacked on the expansion means shown in FIG. 4 and the compression protection means is disposed.
6 is a view showing a cross-section so that the inside of the expansion means shown in FIG. 4 is visible, and a view schematically showing that a pair of expansion alignment keys are moved left and right outward.
7A and 7B are views each showing a process of moving the expansion plate to radially expand outward according to the rotation of the rotating rod and the rotating means based on FIGS. 4 and 6.
FIG. 8 is a schematic bottom view of the gap adjusting unit shown in FIG. 4.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the implementation of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by describing a preferred embodiment of the present invention with reference to the accompanying drawings. The same reference numerals shown in each drawing indicate the same members.

1 is a flow chart schematically illustrating a method of guiding an alignment of a brush disk for polishing according to an embodiment of the present invention, and FIG. 2 is a schematic block diagram of a main part applied to the method of guiding an alignment of a disk shown in FIG. 1. .

As shown in these drawings, in the alignment guide method of the polishing brush disk according to the present embodiment, a plurality of expansion alignment keys 620 are applied to the expansion plate 610 in the non-expanded state of the expansion plate 610 of the expansion means 600. ), and the step (S20) of stacking the brush disk 1 so that the plurality of expansion alignment keys 620 are fitted into the rotation preventing grooves of each of the brush disks (1), and the stacking of the brush disk 1 is completed. The step of disposing the lower protection plate 710 and the upper protection plate 720 at the lower and upper sides (S30), and the inner diameter of the brush disk 1 by disposing the gap adjustment unit 1000 on a plurality of expansion alignment keys 620 In accordance with the step (S40) of moving the plurality of expansion alignment keys 620 in the gap adjustment unit 1000 (S40), and a plurality of expansion alignment keys by combining a plurality of expansion alignment keys 620 to the gap adjustment unit 1000 The step of fixing the position 620 (S50), and by rotating the rotating means 400 forwardly rotated so that each of the expansion plates 610 radially expands and moves outward by a cam follower 500, a loose brush disk ( 1) The step of aligning each of the alignment states more precisely (S60), and the step of compressing each of the stacked and aligned brush disks 1 through a press 800 under the control of the control panel 900 in the vertical direction ( S70) and the step of reversing the rotating means 400 to facilitate separation of each of the brush disks 1 on which the compression work has been completed from the expansion means 600, and then returning each of the expanded expansion plates 610 to their original positions (S80 ), and a step (S90) of separating the brush disk 1 in a state in which the gap adjustment unit 1000, the expansion alignment key 620, the lower protection plate 710, and the upper protection plate 720 are separated.

In the step (S10) of coupling the plurality of expansion alignment keys 620 to the expansion plate 610 in the non-expanded state of the expansion plate 610 of the expansion means 600, the plurality of expansion alignment keys 620 are connected to the expansion plate 610 Can be fitted to fit.

In the step (S20) of stacking the brush disk 1 so that the plurality of expansion alignment keys 620 are fitted in each of the rotation preventing grooves (S20), the plurality of disks may be stacked in the height direction of the plurality of expansion alignment keys 620 .

When the lamination of the brush disk 1 is completed, in the step (S30) of disposing the lower protection plate 710 and the upper protection plate 720 on the lower and upper sides, respectively, the upper surface of the lower protection plate 710 is among the plurality of expansion plates 610. The bottom portion of the expansion plate 610 disposed at the lowermost portion may be in contact, and the bottom portion of the upper protection plate 720 may contact the upper surface portion of the expansion plate 610 disposed at the uppermost portion.

In the step (S40) of moving the plurality of expansion alignment keys 620 in the gap adjustment unit 1000 according to the inner diameter of the brush disk 1 by arranging the gap adjustment unit 1000 on the plurality of expansion alignment keys 620 , The plurality of expansion alignment keys 620 may be moved on the expansion groove 230 provided in the expansion guide plate 210.

In the step (S50) of fixing the position of the plurality of expansion alignment keys 620 by coupling the plurality of expansion alignment keys 620 to the gap adjustment unit 1000, the plurality of expansion alignment keys 620 is a gap adjustment unit 1000 ) May be screwed detachably to the expansion body 1200 through the guide groove fastening hole 1220 provided in the expansion body 1200 of ).

Afterwards, the rotation means 400 is rotated forward so that each of the expansion plates 610 is radially extended and moved outward by a cam follower 500 to more precisely align the alignment of each of the loose brush disks 1 Step (S60), a step (S70) of pressing each of the stacked and aligned brush disks 1 through the press 800 under the control of the control panel 900 in the vertical direction (S70), and the brush disk 1 in which the pressing operation is completed. ) Step (S80) of returning each of the expanded expansion plates 610 to their original positions after rotating the rotating means 400 to facilitate separation from the expansion means 600 (S80), and the gap adjustment unit 1000, expansion alignment A step (S90) of separating the brush disk 1 in a state in which the key 620, the lower protective plate 710, and the upper protective plate 720 are separated may be sequentially performed.

Hereinafter, a polishing apparatus to which the present embodiment is applied will be described with reference to FIGS. 3 to 8.

The polishing apparatus according to the present embodiment includes a lower plate 100, an expansion guide plate 200 coupled to the lower plate, a rotating rod 300, a rotating means 400, a cam follower 500, an expanding means ( 600), compression protection means 700, a press (press, 800), the control panel 900, and comprises a gap adjustment unit (1000).

The lower plate 100 is fixedly installed on the worktable 101, as shown in FIGS. 3 to 6, and a plurality of fixing holes 110 are formed through it. Here, the fixing hole 110 communicates with the expansion hole 210 formed through the expansion guide plate 200 to be described later and the coupling hole 602 formed through the expansion plate 610 of the expansion means 600, respectively, and the bolt, The lower plate 100, the expansion guide plate 200, and the expansion plate 610 are coupled to each other through a fastening member 50 including a nut and a washer. In addition, the lower plate 100 is formed through a fixed fastening hole (not shown) communicating with the fastening hole 220 of the expansion guide plate 200 so that the expansion guide plate 200 to be described later is fixedly coupled.

The expansion guide plate 200 is fixedly coupled to the upper side of the lower plate, as shown in Figs. 3 to 6, a plurality of expansion holes 210 are formed, and the fastening hole 220 so as to be fixedly coupled to the lower plate 200 It is formed through. Here, the reason for configuring the expansion guide plate 200 is to allow the expansion plate 600 of the expansion unit 600 to be described later to expand and move radially outward, which will be described in detail in the expansion unit 600.

In the present embodiment, the expansion guide plate 200 may be additionally provided with an expansion groove 230 as shown in FIGS. 4 to 6. In this embodiment, the expansion groove 230 may provide a space in which the plurality of expansion alignment keys 620 can be moved in the left and right directions with reference to FIG. 6, as shown in FIG. 6. As a result, when the inner diameter of the brush disk 1 is different, the plurality of expansion alignment keys 620 may be moved in the left-right direction based on FIG. 6 to support the inner diameter 1 of the brush disk 1. In this embodiment, since the plurality of expansion alignment keys 620 are strictly inserted into the rotation prevention groove 22 (refer to FIG. 1) of the brush disk 1 and 1, the depth of the rotation prevention groove 22 may be considered. .

The rotating rod 300 is rotatably coupled to the lower plate 100 and the expansion guide plate 200 as shown in Figs. 3 to 6, and is engaged with a tool including a hexagon wrench on the upper surface to rotate in a forward or reverse rotation. The rotation groove 310 is formed.

To this end, the lower plate 100 and the expansion guide plate 200 are provided with sliding bearings 102 and 201 on each of the coupling surfaces with the rotating rod 300.

The rotating means 400 is separated from each other in the vertical direction to the outer circumferential surface of the rotating rod 300 so as to rotate in a forward or reverse rotation together with the rotating rod 300 as shown in Figs. Each disk 420 is provided.

A plurality of cam followers 500 are coupled to each of the upper rotating disk 410 and the lower rotating disk 420, and the head 510 is coupled in an exposed state while being rotatable. Here, the cam follower refers to a shaft-attached bearing that is used as a cam mechanism or a guide roller for linear motion because a needle roller is assembled inside, and the outer ring of the head 510 performs rotational motion while directly in contact with the mating surface. It is designed to withstand impact load by making it thicker, and in this embodiment, the inner diameter of the inner circumferential surface of the expansion plate 610 provided in the expansion unit 600 to be described later according to the rotation of the rotating rod 300 and the rotating unit 400 is greater than that of other parts. It is configured for the purpose of pressing the small pressing part 601 part so that the expansion plate 610 radially expands and moves outward.

The expansion means 600 is coupled to the upper side of the expansion guide plate 200 as shown in FIGS. 3 to 7, and a plurality of rotation prevention grooves 22 are formed in the hollow part 21 as each brush 10 is planted. A plurality of brush disks (1) (1) consisting of the formed disk (20) are stacked, the expansion alignment key (620) coupled to the rotation preventing groove (22) is detachably coupled, and the upper rotating disk (410) and It is a means for aligning each of the stacked brush disks 1 by moving a part of the inner circumferential surface by the head 510 of the cam follower 500 to expand radially outward according to the rotation of the lower rotating disk 420 . Here, the expansion means 600 is a plurality of expansion plates 610 radially disposed so as to be in close contact with the outer circumferential surfaces of the upper rotating disk 410 and the lower rotating disk 420, depending on the height of the stacked brush disks (1). The dogs can be stacked in multiple stages in the vertical direction in a radially arranged state, and as an example, three expansion plates 610 are arranged in a radial shape to form a first stage, and are stacked in four stages as shown in FIGS. 4, 5 and 7 Can be.

To this end, each of the expansion plate 610 is formed with a pressing portion 601, a coupling hole 602, and a detachable groove 603.

The pressing part 601 of the expansion plate 610 is located in the center of the inner circumferential surface so as to be pressed by the head 510 of the cam follower 500 according to the rotation of the upper rotating disk 410 and the lower rotating disk 420. ) Each inner circumferential surface has a smaller inner diameter than the rim, so it is a convexly protruding part compared to the other parts.

In addition, the coupling hole 602 has an inner diameter equal to the outer diameter of the bolt so as to be coupled to the upper side of the expansion guide plate 200 through a fastening member 50 including a bolt, a nut and a washer, and the fixing hole 110 and expansion It communicates with the hole 210, and a plurality is formed. Here, the inner diameter of each of the fixing hole 110 and the expansion hole 210 is, when pressing by the head 510 of the cam follower 500, each of the expansion plates 610 is moved from the top of the expansion guide plate 200 to the outside. It is formed through a larger than the outer diameter of the bolt and the inner diameter of the coupling hole 602 so as to extend and move radially. That is, the coupling hole 602 has the same inner diameter as the outer diameter of the bolt included in the fastening member 50 so that even if it is stacked in one or multiple stages, it is radially extended to the outside to move or return, and the fixing hole 110 and The inner diameter of the expansion hole 210 is formed to be larger than the outer diameter of the bolt and the inner diameter of the coupling hole 602 so that each of the expansion plates 610 can move above the expansion guide plate 200 together with the bolt. At this time, the inner diameter of the fixing hole 110 is perforated larger than the outer diameter of the washer or nut fastened with the bolt so that the bolt can move in the horizontal direction within the expansion hole 210.

In addition, the detachable groove 603 is formed on the outer circumferential surface so that a part of the expansion alignment key 620 is detachably coupled while being exposed to the outside. here. The cross section of the expansion alignment key 620 has a shape and size such that it is in close contact with a part of the rotation preventing groove 22 of the brush disk 1 only when the expansion plate 610 is moved to expand radially. In addition, the reason why the expansion alignment key 620 is configured to be detachable to the detachable groove 603 is that when each of the brush disks 1 is stacked on the outer circumferential surface of the expansion plate 610, it is laminated by combining it with the detachable groove 603 in advance. And the expansion alignment key 620 to facilitate the alignment, to facilitate separation when separating each of the brush disks (1) all completed from the outer peripheral surface of the expansion plate 610 through the press 800 to be described later, lamination, alignment, and compression work. ) Is to be separated first.

In addition, Figures 7 (a) and (b) are moved so that the expansion plate 610 radially expands outward according to the rotation of the rotating rod 300 and the rotating means 400 based on the embodiment of FIGS. 4 and 6 It is a diagram showing each process. That is, as described above, according to the rotation of the rotating rod 300 and the rotating means 400, the head 510 of the cam follower 500 presses the pressing portions 601 of each of the expansion plates 610, and thus the expansion plate ( 610) Each is moved so as to expand radially outward. FIG. 7 (a) is a diagram and a photograph of the expansion plate 610 in a state before expansion, showing that they are in close contact with each other on the interface of each expansion plate 610, and FIG. 7(b) is a drawing and a photograph of the expansion plate 610 in a state in which the expansion plate 610 has been expanded and moved, showing that the boundary surfaces of the expansion plate 610 are spaced apart from each other.

The compression protection means 700 is a brush disk 1 stacked to prevent damage to the brush disk 1 when each of the brush disks 1 stacked on the expansion means 600 is compressed as shown in FIGS. 4 and 5 A lower protection plate 710 disposed below the brush disk 1 and an upper protection plate 720 disposed above the brush disk 1 are provided. Here, a plurality of rotation preventing holes 711 and 721 are formed through each of the lower protection plate 710 and the upper protection plate 720, which is when pressing the plurality of brush disks 1 stacked through a press 800 to be described later. In order to prevent the brush disk 1 from being damaged by twisting and rotating the lower protection plate 710 and the upper protection plate 720, the rotation prevention holes 711 and 721 have a size longer than the vertical separation distance between the rotation prevention holes. Branches can be combined with an anti-rotation key (not shown). In addition, on the upper surface of the upper protection plate 720, the press pressing surface 722 is recessed so that the vertical load of the press is transmitted to the center of the disk 20 of the brush disk 1 when pressing through the press 800. Is formed.

The press 800 is installed above the expanding means 600 to press each of the brush disks 1 stacked on the expanding means 600 in the vertical direction, as shown in FIG. 3. A portion performing compression so that a vertical load is transmitted to the plurality of brush disks 1 and the upper protection plate 720 stacked on the outer circumferential surface of the expansion plate 610 of the expansion means 600 may be formed as a cylinder having a hollow portion.

The control panel 900 is a means for controlling the power supply and operation of the press 800 as shown in FIG. 3, and may be installed close to the work table 101 to facilitate operation, and power ON/OFF, the press It may be provided with an operation button, such as up and down.

The gap adjusting unit 1000 is a brush disk used to polish the steel plate by adjusting the gap of the plurality of expansion alignment keys 620 to correspond to the inner diameter of the brush disk 1 by being coupled to the plurality of expansion alignment keys 620 It is adjusted to correspond to the inner diameter of (1) and can be applied universally to the brush disk 1 for polishing steel sheets having various inner diameters.

In this embodiment, the gap adjusting unit 1000 may be disposed on the upper protection plate 720, as shown in FIG. 4, and is coupled to the upper end of the plurality of expansion alignment keys 620 to have various inner diameters. It serves to fix the upper ends of the plurality of expansion alignment keys 620 moved to correspond to the disk (1).

In this embodiment, as shown in FIG. 4, the gap adjusting unit 1000 is disposed on the plurality of expansion alignment keys 620 and provided with a body hole 1110 and a base body 1100, and a plurality of expansions It is provided on the base body 1100 so as to correspond to the alignment key 620 and guides the movement of the plurality of expansion alignment keys 620 and includes a plurality of expansion bodies 1200 to which the plurality of expansion alignment keys 620 are coupled. do.

In the present embodiment, a moving guide groove 1210 into which a plurality of expansion alignment keys 620 are inserted may be provided in the plurality of expansion bodies 1200, as illustrated in FIG. 8.

In addition, in the present embodiment, the moving guide groove 1210 is provided with a plurality of guide groove fastening holes 1220 as shown in FIG. 8, and the gap adjusting part 1000 is a plurality of guide groove fastening holes 1220. Through a fastening part coupled to the plurality of expansion alignment keys 620, for example, it may be detachably coupled to the plurality of expansion alignment keys 620 by screws.

As discussed above, in this embodiment, the gap control unit is arranged on a plurality of expansion alignment keys to move the plurality of expansion alignment keys from the gap adjustment unit to match the inner diameter of the brush disk, and a plurality of expansion alignment keys to the gap adjustment unit. By combining the plurality of expansion alignment keys to fix the position, the polishing brush can be conveniently and accurately stacked and pressed in the process of stacking the polishing brushes in multiple layers.

As described above, the present invention is not limited to the described embodiments, and it is obvious to those of ordinary skill in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the scope of the claims of the present invention.

100: lower plate 200: expansion guide plate
300: rotating rod 400: rotating means
500: cam follower 600: expansion means
700: compression protection means 800: press
900: control panel 1000: gap control unit

Claims (3)

Coupling a plurality of expansion alignment keys to the expansion plate in the non-expanded state of the expansion plate of the expansion means;
Stacking the plurality of expansion alignment keys into the rotation preventing grooves of each of the brush disks;
Disposing a lower protective plate and an upper protective plate on the lower and upper portions, respectively, when lamination of the brush disk is completed;
Disposing a gap adjusting part on the plurality of expansion alignment keys to move the plurality of expansion alignment keys in the gap adjusting part according to the inner diameter of the brush disk;
Fixing the plurality of expansion alignment keys by coupling the plurality of expansion alignment keys to the gap adjustment unit;
Aligning the alignment of each of the loose brush disks more precisely by rotating the rotating means forward so that each expansion plate is radially extended and moved outward by a cam follower;
Pressing each of the brush disks stacked and aligned through a press in an up-down direction under the control of a control panel;
Rotating the rotating means to facilitate separation of each of the brush disks on which the pressing operation has been completed from the expansion means, and then returning each of the expanded expansion plates to their original positions; And
And separating the brush disk while the gap adjusting part, the expansion alignment key, the lower protection plate and the upper protection plate are separated. The method according to claim 1,
The gap adjusting part is disposed on the upper protective plate and detachably coupled to the upper end of the plurality of expansion alignment keys. The method according to claim 2,
The gap adjusting part,
A base body disposed above the plurality of expansion alignment keys and provided with body holes; And a plurality of extension bodies provided on the base body so as to correspond to the plurality of extension alignment keys to guide movement of the plurality of extension alignment keys and to which the plurality of extension alignment keys are coupled, the plurality of extension bodies There is provided a moving guide groove into which a plurality of the expansion alignment keys are inserted, a plurality of guide groove fastening holes are provided in the moving guide groove, and the gap adjusting part is provided with a plurality of expansion alignment through the plurality of guide groove fastening holes. How to guide the alignment of the polishing brush disk that is detachably attached to the key.

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