WO2022186346A1

WO2022186346A1 - Machining tool and machining device using machining tool

Info

Publication number: WO2022186346A1
Application number: PCT/JP2022/009190
Authority: WO
Inventors: 浩神野; 太郎神野
Original assignee: オオノ開發株式会社
Priority date: 2021-03-04
Filing date: 2022-03-03
Publication date: 2022-09-09
Also published as: JP2022135073A; JP6945903B1; JP2022135883A

Abstract

The present invention addresses the problem of obtaining a machining tool capable of effectively cooling machining heat and a machining device using the machining tool. This machining device is a machining tool 100 having a rotation axis Ar, and is provided with: a cup-shaped tool body 110 that includes an upper portion 110a, a side wall 110b, and a bottom portion 110c; and a peripheral wall 120 provided to the tool body 110 so as to surround the outer periphery of the side wall 110a. The problem is solved by a plurality of through holes 102a through which a liquid can pass being formed in the side wall.

Description

Processing tool and processing equipment using the processing tool

The present invention relates to a machining tool for machining a workpiece and a machining apparatus using the machining tool.

Conventionally, as a processing device equipped with a processing tool for processing a workpiece, for example, a paint film stripping device equipped with a sander blade disclosed in Patent Document 1 is known.

This coating film peeling device is a disk sander, and includes a rotatable sander blade for scraping off the coating film of the workpiece. It has a rigid structure.

Japanese Patent Application Laid-Open No. 2000-202777

However, when a disk sander equipped with the sander blade described above is used to process the surface of concrete, etc., there is a problem that the sander blade is worn by the heat of processing, and the processing waste is fused to the sander blade, causing clogging. .

An object of the present invention is to obtain a processing tool capable of effectively cooling processing heat and a processing apparatus using the processing tool.

The present invention provides the following items.
(Item 1)
A processing tool having a rotating shaft,
a cup-shaped tool body including a top, side walls and a bottom;
A processing tool (item 2) comprising a peripheral wall provided in the tool body so as to surround the outer periphery of the side wall.
2. The processing tool according to item 1, wherein the side wall is formed with a plurality of through holes through which liquid can pass.
(Item 3)
at least one through-hole of the plurality of through-holes has a first opening provided on the upper surface side and a second opening provided on the bottom side;
At least one through-hole among the plurality of through-holes is configured such that the position of the first opening is spaced apart from the rotation shaft with respect to the position of the second opening. , item 2.
(Item 4)
4. The processing tool according to

item

2 or 3, wherein at least one through-hole among the plurality of through-holes is provided in the vicinity of a joint portion between the peripheral wall and the side wall.
(Item 5)
5. The processing tool according to any one of items 2 to 4, wherein at least one through-hole among the plurality of through-holes is arranged at predetermined intervals around the rotation direction of the rotating shaft.
(Item 6)
6. The processing tool according to any one of items 1 to 5, wherein the peripheral wall has a peripheral wall main body surrounding the side wall and a flange projecting toward the rotation shaft from an upper portion of the peripheral wall main body.
(Item 7)
7. The processing tool according to any one of items 1 to 6, wherein the peripheral wall has a height of about 5 mm or more.
(Item 8)
8. The processing tool according to any one of items 1 to 7, wherein the cup shape is a substantially truncated cone shape.
(Item 9)
A processing tool according to item 8, wherein the upper surface of the side wall is formed with a plurality of grooves extending radially outward in the radial direction with respect to the rotating shaft (item 10).
10. A processing tool according to item 9, wherein the depth of the groove is configured to become shallower toward the outside in the radial direction of the rotating shaft.
(Item 11)
11. The working tool according to any one of items 1 to 10, further comprising at least one working member provided on the bottom of the tool body.
(Item 12)
A processing device for processing a workpiece,
A processing tool according to any one of items 1 to 11;
a drive unit that rotationally drives the processing tool;
A processing apparatus comprising: a liquid supply unit that supplies liquid to the upper surface of the side wall.
(Item 13)
13. The processing apparatus according to item 12, further comprising a dust collection cover that covers the processing tool.
(Item 14)
14. The processing apparatus according to item 12 or 13, wherein the workpiece includes a material selected from the group consisting of asbestos, concrete, mortar, asphalt, brick, cement, stone and composite materials thereof.
(Item 15)
A processing method comprising processing the workpiece using the processing apparatus according to any one of items 12 to 14.

According to the present invention, it is possible to obtain a processing tool capable of effectively cooling processing heat and a processing apparatus using the processing tool.

FIG. 1 is a perspective view showing the appearance of a machining tool 100 according to Embodiment 1 of the present invention. FIG. 2 is a diagram showing a specific structure of the processing tool 110 shown in FIG. 1, and shows the structure of the processing tool 110 shown in FIG. 1 as viewed from above the plane of the paper. FIG. 3 is a diagram showing a specific structure of the processing tool 110 shown in FIG. 1, showing the structure of the processing tool 100 shown in FIG. 1 viewed from below. FIG. 4 is a perspective view schematically showing a processing apparatus 1 using the processing tool 100 shown in FIG. 1. FIG. FIG. 5 is a diagram for explaining a more specific structure of the processing apparatus 1 shown in FIG. 4. As shown in FIG. FIG. 6 is a perspective view for explaining the flow of liquid in the processing tool 100 when the liquid is supplied to the processing tool 100 of the processing apparatus 1 shown in FIG. 4 while the processing tool 100 is being rotated. FIG. 7 is a perspective view showing how the workpiece P is processed by the processing apparatus 1 shown in FIG. FIG. 8 is a perspective view showing the appearance of a working tool 100a according to Embodiment 2 of the present invention. FIG. 9 is a diagram showing a specific structure of the processing tool 100a shown in FIG. 8, and shows the structure of the processing tool 100a shown in FIG. 8 viewed from above the plane of the paper. FIG. 10 is a diagram showing a specific structure of the processing tool 100a shown in FIG. 8, and shows the structure of the processing tool 100a shown in FIG. 8 as viewed from below. 11 is attached to the processing apparatus 1 shown in FIG. 4 in place of the processing tool 100 shown in FIG. 1, and the processing tool 100a shown in FIG. 8 is supplied with liquid while being rotated. It is a perspective view for demonstrating the flow of a liquid.

The present invention will be described below. It should be understood that the terms used herein have the meanings commonly used in the art unless otherwise specified. Thus, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification (including definitions) will control.

As used herein, "processing" refers to a process of removing the surface of a workpiece, such as grinding, polishing, or cutting.

As used herein, "about" means within ±10% of the number that follows.

An object of the present invention is to obtain a processing tool that can effectively cool processing heat and that can sufficiently suppress heat generation at a contact portion with a workpiece.
A processing tool having a rotating shaft,
a cup-shaped tool body including a top, side walls and a bottom;
The above problem is solved by providing a peripheral wall provided on the tool body so as to surround the outer periphery of the side wall.

In the processing apparatus having such a configuration, when the liquid is supplied from the liquid supply portion to the upper surface of the side wall of the processing tool, the liquid is accumulated in the region between the side wall and the peripheral wall of the tool body, thereby causing the processing tool to move. Cooling becomes possible. Furthermore, the processing tool of the present invention may have a side wall formed with a plurality of through-holes through which liquid can pass. By doing so, the liquid can flow inside the tool body through the through holes. The liquid that has flowed inside the tool body flows to the tool body and the workpiece due to the rotating centrifugal force of the tool body. As a result, it is possible to effectively cool the processing heat generated by the contact of the processing tool with the workpiece, prevent the wear of the processing tool and the fusion of processing chips to the processing tool, and improve the life and processing accuracy of the processing tool. can be improved.

Therefore, the processing tool of the present invention includes a cup-shaped tool body having a side wall, a peripheral wall surrounding the outer periphery of the side wall, and a plurality of through holes formed in the side wall. It is not limited and can be arbitrary.

(tool body)
The tool body is for attaching a processing member for processing a workpiece to a processing device, and includes an upper portion mounted on the rotating shaft of the processing device, a bottom portion for attaching the processing member, and an upper portion and a bottom portion. and a connecting peripheral wall. Here, the shape of the tool body has a cup shape.

Also, the shape of the cup-shaped side wall portion may be a cylinder, a polygonal cylinder, or a truncated cone or truncated pyramid. Preferably, it may have a truncated cone shape.

Furthermore, the arrangement, number, size and shape of the plurality of liquid-passable through holes formed in the side wall of the cup-shaped tool body are not particularly limited and may be arbitrary. The shape of the through-hole is, for example, substantially circular, substantially elliptical, substantially rectangular, or the like.

Preferably, the plurality of through holes are arranged at predetermined intervals around the rotation axis of the tool body. By doing so, it becomes possible to supply the liquid substantially uniformly to the entire tool body. However, the present invention is not limited to this. For example, multiple through holes may be arranged at different intervals. Moreover, it is preferable that the through-hole is provided in the vicinity of the processing member provided on the bottom surface of the tool body. By doing so, it becomes possible to cool the processing plant more efficiently.

Also, preferably, at least one through-hole among the plurality of through-holes is arranged in the vicinity of the joint between the peripheral wall and the side wall. Here, the neighborhood means a range of about 5 mm on the rotating shaft side and the opposite side with respect to the connecting portion between the peripheral wall and the side wall. More preferably, the through hole is provided in the vicinity of the workpiece. By providing it in the vicinity of the workpiece, it is possible to efficiently cool not only the tool body but also the workpiece.

By doing so, the liquid that has passed through the through-hole can be supplied near the processing tool (especially the processing member), and the processing heat can be cooled more effectively. Furthermore, the liquid can be effectively supplied to the processing waste, and the scattering of the processing waste can be prevented more effectively.

Further, the plurality of through holes, for example, one or more of the plurality of through holes has a first opening provided on the upper side and a second opening provided on the bottom side. . In the one or more through holes, the position of the first opening and the position of the second opening may be the same distance from the rotation axis, or the position of the first opening may be the position of the second opening. It may be configured to incline so as to be positioned further away from the rotation axis than the position of the opening. By inclining the position of the first opening so that it is further away from the rotation axis than the position of the second opening, the liquid accumulated inside the tool body is evenly distributed to the machining area by centrifugal force. It becomes possible to supply to (processed member).

Furthermore, the plurality of through-holes includes one or more through-holes other than the one or more through-holes described above, and the other one or more through-holes are a first opening provided on the top side and a A second opening is provided, and the other one or more through holes are arranged such that the position of the first opening is positioned forward of the position of the second opening in the direction of rotation of the processing tool. You may be comprised so that it may incline. By doing so, the liquid can be efficiently supplied toward the processing site (workpiece), and the processing site can be cooled more efficiently.

A plurality of through holes (those inclined so that the position of the first opening is farther from the rotation axis than the position of the second opening and/or the position of the first opening is the position of the second opening) The size of the sloped portion positioned forward in the direction of rotation of the processing tool relative to the position of the portion may be arbitrary. For example, the size of the through-hole is φ about 2 mm to φ about 5 mm. However, the size of the through-hole can be appropriately adjusted in relation to the desired amount of liquid supply and/or rotation speed, and the size of the through-hole is not limited to the above numerical range. In one embodiment, the size of the through-hole is φ about 3 mm at a working tool of about 12000 rpm.

A plurality of grooves extending radially outward in the radial direction with respect to the rotating shaft may be formed on the upper surface of the side wall of the tool body. By providing such grooves, the water stored in the grooves flows vigorously to the peripheral wall, so that the tool body can be cooled more effectively. The depth of the groove may be configured to become shallower with increasing distance in the radial direction of the rotating shaft, or may be constant over the entire groove. By making the depth of the groove shallower with increasing distance in the radial direction of the rotating shaft, water accumulated in the groove can smoothly move toward the peripheral wall.

(Processing member)
Furthermore, the bottom portion of the tool body is not particularly limited as long as it is possible to mount a processing member capable of processing the workpiece.

For example, one or more processing members for processing the workpiece may be attached to the bottom of the tool body. Here, the processing member may be any member as long as it is a member for processing to remove the surface of the workpiece. For example, the processing member may be a whetstone for grinding, cutting, peeling, etc. Alternatively, it may be a processing blade (cutter) for cutting, cutting, peeling, or the like, or a polishing pad made of a flexible material such as urethane for polishing, peeling, or the like.

Also, the arrangement, shape, number, etc. of the processing members provided on the bottom may be arbitrary. For example, if the material to be processed is a hard material, such as a diamond cutter, it is preferable to reduce the depth of cut in processing and increase the number of members to be processed accordingly. If the processing member such as the urethane pad is made of a soft material, it is preferable to increase the depth of cut and reduce the number of cuts to prevent clogging. In one embodiment, when the tool body is a cylindrical body of φ125 mm, nine pieces of round piece-shaped cutting tips of φ10 mm are arranged substantially evenly.

(surrounding wall)
As long as the peripheral wall is provided in the tool body so as to surround the outer periphery of the side wall of the tool body, other configurations are not limited and may be arbitrary. For example, the peripheral wall may have a peripheral wall body surrounding the side wall of the tool body and a flange projecting toward the rotating shaft from the top of the peripheral wall body, or may have only the peripheral wall body without the flange. Moreover, the shape of the peripheral wall body is not limited as long as it surrounds the side wall of the tool body, and may be arbitrary.

Since such a peripheral wall is arranged so as to cover the outer periphery of the tool body, when liquid is supplied onto the side wall of the tool body, the liquid accumulates between the side wall and the peripheral wall of the tool body. The liquid that has been pumped can easily flow into the cup-shaped tool body through the through hole in the side wall of the tool body. As a result, the liquid is easily supplied to the tool body and the workpiece, and the liquid cools the processing heat generated by the machining of the workpiece in the workpiece. By providing the flange, it becomes difficult for the liquid to flow to the outside of the working tool, and it becomes possible to more effectively store the liquid between the side wall and the peripheral wall of the tool body.

The height of the peripheral wall (for example, in the peripheral wall body) can be arbitrary. Here, the height of the peripheral wall means the height from the portion where the peripheral wall (specifically, the peripheral wall main body) and the upper surface of the side wall abut against each other. For example, the height of the peripheral wall is approximately 5 mm or more. By setting the width to about 5 mm or more, the liquid flowing from the upper surface of the side wall (especially the linear groove described later) is accumulated in the area formed by the peripheral wall and the upper surface of the side wall due to centrifugal force during rotation of the processing tool. becomes possible. In one embodiment, the height of the peripheral wall body is about 25 mm, and the height from the portion where the peripheral wall body and the upper surface of the side wall abut is about 10 mm.

(Workpiece)
The work piece is not particularly limited as long as the surface of the work piece is processed. For example, the work piece consists of asbestos, concrete, mortar, asphalt, brick, cement, stone, and composite materials thereof. It may contain a material selected from the group. Moreover, the workpiece may have a base member and a surface covering material covering the surface of the base member. In this case, the base member is a structural member such as a steel member or a concrete member, and the surface covering material is selected from the group consisting of asbestos, mortar, asphalt, brick, stone and composite materials thereof. It may be composed of a material that is

Further, the above-described processing tool is used by being attached to a processing apparatus, and the processing apparatus includes the above-described processing tool, a driving unit that rotationally drives the processing tool, and a liquid supply unit that supplies liquid to the upper surface of the side wall. Other configurations are not particularly limited as long as they have a part.

(Drive part)
As long as the drive unit can rotate the machining tool, the specific configuration and configuration can be arbitrary. For example, the driving source may be electric power or compressed air. As a result, the machining tool can be rotated by the drive unit, and the machining apparatus can be used not as a manual tool but as a power tool such as an electric tool or an air tool.

(liquid supply unit)
Furthermore, the configuration of the liquid supply section is not limited, and may be any configuration. It may be a tube.

Furthermore, the processing apparatus preferably further includes a dust collection cover that covers the processing tool from the viewpoint of preventing the scattering of processing waste, but the dust collection cover is not necessarily essential.

(Dust collection cover)
The dust collection cover is a member that covers the processing tool, and may have any shape as long as it can prevent the scattering of processing waste after processing the workpiece with the processing tool. In one embodiment, the dust collection cover has a cup-shaped tubular body. Further, it preferably has a liquid supply section for supplying liquid into the dust collection cover and/or a processing waste discharge section for discharging processing waste and liquid within the dust collection cover to the outside. The shape of the dust collection cover may be a structure in which one end side opening of a cylindrical body is closed with a flat plate, or a dome shape forming part of a hollow sphere.

Alternatively, the dust collection cover may include an inner cover and an outer cover surrounding the inner cover, and the outer cover may be slidably supported with respect to the inner cover in the direction of the rotation axis of the processing tool by a cover support mechanism. good. By doing so, the processing tool can be hidden inside the dust collection cover when processing is not performed, and it is possible to prevent the processing tool from being accidentally hit and damaged. Furthermore, when machining is performed, the dust collecting cover is slid and retracted by pressing the machining tool against the workpiece, so that the machining tool can come into contact with the workpiece.

In addition, the liquid supply part and/or the processing waste discharge part may be attached to the cup-shaped top plate, or may be attached to the cup-shaped peripheral wall. Furthermore, the liquid supply pipe may be attached to the cup-shaped top plate and the waste discharge pipe may be attached to the cup-shaped peripheral wall, or the liquid supply pipe may be mounted to the cup-shaped peripheral wall and the waste discharge pipe It may be attached to a cup-shaped top plate.

It should be noted that the liquid supply section and/or the machining waste discharge section may be provided in the tool body, or may be provided in the drive section of the processing apparatus. Preferably, the processing device includes a liquid supply section and a processing waste discharge section, each provided at a different location. However, the invention is not so limited.

However, in the following embodiments, as an example of the processing apparatus of the present invention, the processing tool includes a tool body including a side wall made of a truncated cone-shaped cylindrical body, and a peripheral wall provided so as to surround the side wall of the tool body. The side wall of the tool body has a plurality of through holes arranged at equal intervals along the circumferential direction of the side wall.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
1 is a perspective view showing the appearance of a working tool 100 according to Embodiment 1 of the present invention, FIG. 1(a) shows the entire working tool 100, and FIG. 1(b) shows FIG. is an enlarged view of the B portion of.

[Processing tool 100]
A processing tool 100 of Embodiment 1 is a tool for processing the surface of a workpiece P, and has a rotation axis Ar. The machining tool 100 includes a cup-shaped tool body 110 including an upper portion 110a, a side wall 110b, and a bottom portion 110c, and a peripheral wall 120 provided in the tool body 110 so as to surround the outer periphery of the side wall 110a. through-holes (first through-holes) 102a are formed.
The processing tool 100 will be described in detail below.

2 and 3 are diagrams showing the specific structure of the processing tool 110 shown in FIG. 1, and FIG. 2(a) is a plan view showing the structure of the processing tool 110 shown in FIG. 2(b) is a cross-sectional view taken along line 2A-2A of FIG. 2(a), and FIG. 3(a) is a plan view showing the structure of the processing tool 100 shown in FIG. 3(b) is a sectional view taken along line 3A-3A of FIG. 3(a).

The machining tool 110 includes a cup-shaped tool body 110 and a peripheral wall 120, as well as a machining blade 130, as shown in FIGS.

That is, the upper portion 110a that constitutes the tool body 110 is a disk-shaped portion, and the side wall 110b that constitutes the tool body 110 is a truncated cone-shaped tubular portion connected to the upper portion 110a, and constitutes the tool body 110. The bottom portion 110c is a ring-shaped portion connected to the lower end of the side wall 110b, and a plurality of processing blades 130 are attached to the back surface of the bottom portion 110c.

One or more (here, six) through holes (first through holes) 102a are formed in the side wall 110b. are evenly spaced.

Here, as shown in FIG. 1B, each through hole 102a has a first opening 2a1 on the upper surface side of the sidewall 110b and a second opening 2a2 on the lower surface side of the sidewall 110b. , the position of the first opening 2a1 is tilted so that the position of the second opening 2a2 is further away from the rotation axis Ar. The through hole 102a may have a structure in which the position of the first opening 2a1 and the position of the second opening 2a2 are the same distance from the rotation axis Ar.

The side wall 110b of the tool main body 110 has a substantially truncated cone shape with the bottom side widening with respect to the top side. The linear grooves 101b are formed at equal intervals on one circumference around the rotation axis Ar. The depth of the linear groove 101b is configured to become shallower as the distance from the rotation axis Ar increases. The linear groove 101b may have a uniform depth inside.

The peripheral wall 120 has a cylindrical peripheral wall body 120a surrounding the side wall 110b of the tool body 110, and a flange (annular eaves) 120b provided at the upper end of the peripheral wall body 120a so as to protrude toward the rotating shaft. . In addition, the peripheral wall 120 may have only a peripheral wall main body without a flange.

A chip-shaped processing blade 130 is fixed as a processing member to the lower surface of the bottom portion 110c of the tool body 110 (the surface of the bottom portion 110c facing the workpiece P). Specifically, the processing blades 130 are evenly distributed at three locations on the back surface of the ring-shaped portion that constitutes the bottom portion 110c, and three processing blades 130 are arranged adjacent to each location. (See FIG. 3(a)).

Here, the processing blade 130 is a whetstone for grinding, cutting whetstone, peeling, and the like.

A tool fixing hole 103 is formed in the center of the upper portion 110a of the tool main body 110. The tool fixing hole 103 is a hole for fixing the processing tool 100 to the tool mounting shaft 12b (see FIG. 4) of the drive section 10 of the processing apparatus 1. As shown in FIG.

[Processing device 1]
FIG. 4 is a perspective view schematically showing a processing apparatus 1 using the processing tool 100 shown in FIG. 1. FIG.

The processing apparatus 1 includes a processing tool 100 for processing a workpiece P, a dust collection cover 200 covering the processing tool 100, and a liquid (for example, water, coolant, or polishing liquid) supplied inside the dust collection cover 200. It comprises a liquid supply pipe 210 , a waste discharge pipe 220 for discharging processing waste together with the liquid from the inside of the dust collection cover 200 , and a driving section 10 for rotationally driving the processing tool 100 . Here, the processing tool 100 is the processing tool 100 described with reference to FIGS. 1 to 3. FIG.

(Workpiece P)
The workpiece P is a column member of a building, and is made by applying asbestos as a surface covering material to the surface of a steel material that is a base member. However, the workpiece P is not limited to such a column member of a building, and may be a wall member, a ceiling member, or a floor member of a building. Not limited, it may be a concrete material, and the surface covering material is not limited to asbestos, even if it is a material selected from the group consisting of paint, mortar, asphalt, brick, cement, stone and composite materials thereof good.

(Drive unit 10)
The driving section 10 includes a motor section 11 and a gear section 12 . The motor section 11 has an electric motor 11a that generates a rotational force, and the gear section 12 includes a first gear section 12a that reduces the rotational speed of a motor shaft 11b of the electric motor 11a, and a first gear section 12a. and a second gear portion 12b for converting the direction of the rotation axis of the output shaft 12c to the direction of the rotation axis of the tool attachment shaft 12d. The motor section 11 and the gear section 12 are accommodated in the device housing 1a of the processing apparatus 100, and one end side of the tool mounting shaft 12d forming the gear section 12 protrudes from the device housing 1a.

(Dust collection cover 200)
The dust collection cover 200 is attached to one end side (tool attachment shaft 12d side) of the device housing 1a so as to surround the tool attachment shaft 12d and the machining tool 100 . A liquid supply pipe 210 for supplying water into the dust collection cover 120 is connected to the dust collection cover 200, and a waste discharge pipe 220 for discharging processing waste together with water from the dust collection cover 120 is connected.

A more specific structure of the dust collection cover 200 will be described below.

5A and 5B are diagrams for explaining a more specific structure of the processing apparatus 1 shown in FIG. 4, and FIG. 5A shows the structure of the processing apparatus 1 shown in FIG. 5A is a plan view, FIG. 5B is a cross-sectional view along line 5A-5A showing a state in which the lower end of the processing tool 100 is raised above the lower end of the dust collection cover of the processing device 1, and FIG. 5A is a cross-sectional view along line 5A-5A showing a state in which the lower end of the dust collection cover and the lower end of the processing tool 100 are aligned; FIG.

The dust collection cover 200 has a cup-shaped inner cover 200a, an annular outer cover 200b, and a cover support mechanism 200c.

The inner cover 200a is fixed to the apparatus housing 1a so as to surround the processing tool 100, the outer cover 200b is arranged so as to surround the inner cover 200a, and the cover support mechanism 200c includes the outer cover 200b. are slidably supported in the direction of the rotation axis Ar of the processing tool 100 with respect to the inner cover 200a.

Here, the cover support mechanism 200c includes a support plate 201, a fixing bolt 202, a fixing nut 203 with a washer, and an urging spring 204. The support plate 201 is fixed to the upper surface of the outer cover 200b. A fixing bolt 202 fixed to the upper surface of the inner cover 200a is inserted through an insertion hole (not shown) of the support plate 201 so that the support plate 201 can move up and down. A biasing spring 204 is attached to the fixing bolt 202, and a fixing nut 203 is attached to the fixing bolt 202 so that the biasing spring 204 biases the support plate 201 downward (toward the workpiece P). is installed.

One end of the liquid supply pipe 210 is attached to the upper surface of the inner cover 200a, and one end of the waste discharge pipe 220 is attached to the upper surface of the outer cover 200b. The other end of the liquid supply pipe 210 is a supply pipe joint portion 210a for connecting a water pipe, and the other end of the waste discharge pipe 220 is a discharge pipe joint for connecting to the hose 3 leading to the dust collector. 220a (see FIG. 4).

As shown in FIG. 5, the device housing 1a may be provided with a handle 1b for the operator to hold the device housing 1a. good.

Next, the operation of the processing device 1 equipped with the processing tool 100 will be described.

6 is a perspective view for explaining the flow of liquid in the processing tool 100 when water is supplied to the processing tool 100 of the processing apparatus 1 shown in FIG. 4 while rotating the processing tool 100. FIG. FIG. 5 is a perspective view schematically showing how a workpiece P is processed by the processing apparatus 1 shown in FIG. 4 ;

A water pipe such as the water pipe 2 is connected to the joint portion 210a of the liquid supply pipe 210 of the processing apparatus 100, and a suction port of a dust collector (not shown) is connected to the joint portion 220a of the waste discharge pipe 220. The hose 3 is connected, and the operation of peeling off the coating material Pa such as asbestos adhered to the surface of the substrate Pb of the workpiece P is started.

First, the power of the processing apparatus 1 is turned on to rotate the processing tool 100 by the electric motor 11a of the drive unit 10. At the same time, the power of the dust collector (not shown) is turned on, and the waste connected to the dust collector by the hose 3 is turned on. The air inside the dust collection cover 200 is sucked from the discharge pipe 220 and water is supplied into the dust collection cover 200 from the water pipe 2 connected to the liquid supply pipe 210 .

In this state, the processing apparatus 1 is pressed against the workpiece P so that the processing member 130 such as a grinding wheel of the processing tool 100 contacts the surface of the workpiece P, and the processing apparatus 1 is shown by an arrow X in FIG. , the coating material Pa adhered to the surface of the substrate Pb of the workpiece P is scraped off by the processing member 130 of the rotating processing tool 100 .

At this time, water is supplied from the liquid supply pipe 210 into the dust collection cover 200 that covers the processing tool 100 . Specifically, the water discharged from the liquid supply pipe 210 falls onto the side wall 110b of the tool body 110. As shown in FIG. Since the linear grooves 101b are formed in the side walls 110b, the water once contained in the linear grooves 101b rotates together with the linear grooves 101b, receives centrifugal force, and moves toward the peripheral wall 120 surrounding the side walls 110b. move to The movement of the water contained in the linear grooves 101b to the side of the peripheral wall 120 is performed smoothly and vigorously because the depth of the linear grooves 101b becomes shallower as the distance from the rotation axis Ar increases.

As the water moves from the linear groove 101b to the peripheral wall 120 side as described above, the annular groove 101a formed by the side wall 110b of the tool body 110 and the peripheral wall 120 is filled with water. The water accumulated in this manner is pressed against the peripheral wall 120 by centrifugal force, and the water pressure generated thereby passes through the plurality of through holes 102a formed in the side wall 110b, and the space inside the cup-shaped tool body 110 is discharged. (See arrows in FIGS. 2(b), 3(b) and 6).

In this way, the water that has entered the space inside the cup-shaped tool body 110 flows along the inner surface of the truncated cone-shaped side wall 110b to the bottom side of the tool body 110, and the bottom 110c and the workpiece P flow. It flows out from the inside of the tool main body 110 to the outside through the gap. At this time, the processing blade 130, which is a processing member formed on the bottom portion 110c of the tool body 110, is cooled by the water flowing between the bottom portion 110c and the workpiece P. As shown in FIG.

Further, water enters the inside of the tool body 110 through the through hole 102a formed in the side wall 110b of the tool body 110, and flows out of the tool body 111 through the gap between the grinding wheel 113 and the workpiece P. When the grinding wheel 130 of the machining tool 100 grinds the workpiece P, the machining waste generated mixes with the water flowing through the tool body 111 and changes from powder to muddy. As a result, the machining scraps are sucked into the dust collector through the scrap discharge pipe 220 without being blown up in the dust collection cover 120 .

Furthermore, in the processing tool 100, the peripheral wall 120 arranged so as to surround the side wall 110b of the tool body 110 consists of a cylindrical body 120a surrounding the tool body 110 and an annular canopy protruding inward from the upper end of the cylindrical body 120a. 120b, the water supplied from the liquid supply pipe 130 onto the side wall 110b of the tool body 110 can be prevented from overcoming the peripheral wall 120 and overflowing the annular groove 101a of the machining tool 100, The water supplied into the dust collection cover 200 efficiently flows into the inside of the tool body 110 through the through holes 102a of the side walls 110b of the tool body 110. As shown in FIG. Therefore, water is easily supplied between the tool main body 110 and the workpiece P, so that temperature rise due to heat generation in the processing member 130 can be further suppressed, and processing waste can be further prevented from flying up inside the dust collecting cover 200. In addition, it is possible to reduce health hazards caused by workers inhaling processing waste.

As described above, in the processing apparatus 100 according to the first embodiment, the contact portion with the workpiece can be effectively cooled when processing the workpiece, and heat generation at the contact portion with the workpiece can be reduced. It is possible to obtain a machining tool that can be sufficiently suppressed and a machining apparatus 1 using such a machining tool.

In the processing tool 100 of Embodiment 1, the position of the first opening on the upper surface side of the side wall 110b is farther from the rotation axis than the position of the second opening on the lower surface side of the side wall 110b. However, the through-hole 102a is inclined so that the position of the first opening is positioned forward in the rotational direction Dr relative to the position of the second opening. There may be.

Furthermore, the tool body 110 of the processing tool 100 of Embodiment 1 has a through-hole structure that is inclined such that the position of the first opening is located farther from the rotation axis than the position of the second opening. It may include a first through hole 102a and a second through hole 102b having an inclined structure such that the position of the first opening is located on the forward side in the rotational direction with respect to the position of the second opening. good.
(Embodiment 2)
Hereinafter, a processing tool 100a including such two types of through holes will be described as a processing tool 100a according to Embodiment 2 of the present invention.

8A and 8B are perspective views showing the appearance of a processing tool 100a according to Embodiment 2 of the present invention, FIG. 8A showing the entire processing tool 100, and FIG. is an enlarged view of part C of .

The working tool 100a of the second embodiment has, in addition to the configuration of the working tool 100 of the first embodiment, a second through hole 102b provided in the side wall 110b of the tool body 110. This working tool 100a Other configurations in are the same as those in the processing tool 100 of the first embodiment. It should be noted that the second through-hole 102b is desirably provided in the bottom portion 110c of the tool body 110, not in the side wall 110b of the tool body 110, in order to enhance the effect of discharging debris by water passing through this through-hole. In some cases, the second through hole 102b may be provided so as to extend from the side wall 110b of the tool body 110 to the bottom portion 110c.

A specific explanation is provided below.

9 and 10 are diagrams showing the specific structure of the processing tool 100a shown in FIG. 8, and FIG. 9(a) is a plan view showing the structure of the processing tool 100a shown in FIG. , FIG. 9(b) is a sectional view taken along line 9A-9A of FIG. 9(a), FIG. 9(c) is a sectional view taken along line 9B-9B of FIG. 9(a), and FIG. FIG. 10(b) is a plan view showing the structure of the processing tool 100a shown in FIG. 8 as viewed from below, and FIG. 10(b) is a cross-sectional view taken along the line 10A-10A of FIG.

As shown in FIG. 8B, the second through-holes 102b are the first opening 2b1 provided on the upper side of the side wall 110b of the tool body 110 and the lower side of the side wall 110b of the tool body 110. and a second opening 2b2. The second through hole 102b is configured to be inclined so that the position of the first opening 2b1 is positioned forward in the rotation direction Dr of the processing tool relative to the position of the second opening 2b2. .

Next, the operation of the processing apparatus 1 equipped with the processing tool 100a of Embodiment 2 will be described.

11 is attached to the processing apparatus 1 shown in FIG. 4 in place of the processing tool 100 shown in FIG. 1, and the processing tool 100a shown in FIG. 8 is attached and the liquid is supplied to the processing tool while rotating. is a perspective view for explaining the flow of.

As in the processing apparatus 1 using the processing tool 100 of Embodiment 1, the power of the processing apparatus (not shown) using the processing tool 100a of Embodiment 2 is turned on, and the driving unit rotates the processing tool 100a. , the dust collector (not shown) is turned on, the air in the dust collection cover 200 is sucked from the dust discharge pipe 220 connected to the dust collector by the hose 3, and the water pipe 2 connected to the liquid supply pipe 210 water is supplied into the dust collection cover 200 (see FIG. 7).

In this state, the rotating processing tool 100a scrapes off the coating material Pa adhered to the surface of the base portion Pb of the workpiece P (see FIG. 7).

At this time, water is supplied from the liquid supply pipe 210 into the dust collection cover 200 covering the processing tool 100a, and the water falling on the side wall 110b of the tool main body 110 is removed from the processing tool 100 of the first embodiment. As in the case, it is temporarily housed in the linear groove 101b of the side wall 110b of the tool main body 110, rotates together with the linear groove 101b, receives centrifugal force, and moves toward the peripheral wall 120 surrounding the side wall 110b. As a result, the annular groove 101a formed by the side wall 110b of the tool body 110 and the peripheral wall 120 is filled with water. The accumulated water is pressed against the peripheral wall 120 by centrifugal force, and the water pressure generated thereby flows into the cup-shaped tool body 110 through the plurality of first through holes 102a formed in the side wall 110b (Fig. 9(b), FIG. 10(b), and arrows in FIG. 11).

Further, the machining tool 100a is formed with a second through-hole 102b that is inclined in a direction different from that of the first through-hole 102a, and the upper opening 2b1 of the second through-hole 102b Since the processing tool 100a is positioned forward of the opening 2b2 in the rotational direction Dr, the rotation of the processing tool 100a causes the water accumulated in the annular groove 101a to flow into the second through-hole 102b. 2 through-hole 102b, water flows vigorously between the processing member 130 of the tool body 110 and the workpiece P. As shown in FIG. This flow of water washes away cutting wastes accumulated between the processing member 130 of the tool body 110 and the workpiece P. As shown in FIG. The cutting waste is collected together with water from the waste discharge pipe 220 to the dust collector. Since the cutting chips are mixed with water, it is possible to more effectively prevent the cutting chips from scattering to the outside, unlike the conventional air dust collection method.

As described above, the present invention has been illustrated using preferred embodiments of the present invention, but the present invention should not be construed as being limited to these embodiments. It is understood that the invention is to be construed in scope only by the claims. It is understood that a person skilled in the art can implement an equivalent range from the description of specific preferred embodiments of the present invention based on the description of the present invention and common technical knowledge. It is understood that the documents cited herein are to be incorporated by reference herein in the same manner as if the contents themselves were specifically set forth herein.

The present invention is useful as a processing tool capable of effectively cooling processing heat and a processing apparatus using the processing tool.

1

processing device

100, 100a processing tool 101a annular groove 101b linear groove 102a first through hole 102b second through hole 103 tool fixing hole 110 tool main body 110a upper portion 110b side wall 110c bottom portion 120 peripheral wall 120a cylindrical body 120b annular eaves 130 processing member (processing blade)
200 dust collection cover 200a inner cover 200b outer cover 200c cover support mechanism 210 liquid supply pipe 220 scrap discharge pipe P workpiece

Claims

A processing tool having a rotating shaft,
a cup-shaped tool body including a top, side walls and a bottom;
and a peripheral wall provided on the tool body so as to surround the outer periphery of the side wall.
The processing tool according to claim 1, wherein the side wall is formed with a plurality of through holes through which liquid can pass.
at least one through-hole of the plurality of through-holes has a first opening provided on the upper surface side and a second opening provided on the bottom side;
At least one through-hole among the plurality of through-holes is configured such that the position of the first opening is spaced apart from the rotation shaft with respect to the position of the second opening. 3. A working tool according to claim 2.
The processing tool according to claim 2 or 3, wherein at least one through-hole among the plurality of through-holes is provided in the vicinity of a connecting portion between the peripheral wall and the side wall.
The processing tool according to any one of claims 2 to 4, wherein one or more through-holes among the plurality of through-holes are arranged at predetermined intervals around the rotation direction of the rotating shaft.
The processing tool according to any one of claims 1 to 5, wherein the peripheral wall has a peripheral wall body surrounding the side wall and a flange projecting toward the rotation shaft from the top of the peripheral wall body.
The processing tool according to any one of claims 1 to 6, wherein the peripheral wall has a height of about 5 mm or more.
The processing tool according to any one of claims 1 to 7, wherein the cup shape is a substantially truncated cone shape.
The processing tool according to claim 8, wherein the upper surface of the side wall is formed with a plurality of grooves extending radially outward in the radial direction with respect to the rotating shaft.
The processing tool according to claim 9, wherein the depth of the groove is configured to become shallower toward the outside in the radial direction of the rotating shaft.
The working tool according to any one of claims 1 to 10, further comprising at least one working member provided on the bottom of the tool body.
A processing device for processing a workpiece,
A processing tool according to any one of claims 1 to 11;
a drive unit that rotationally drives the processing tool;
A processing apparatus comprising: a liquid supply unit that supplies liquid to the upper surface of the side wall.
The processing apparatus according to claim 12, further comprising a dust collection cover that covers the processing tool.
The processing apparatus according to claim 12 or 13, wherein the workpiece includes a material selected from the group consisting of asbestos, concrete, mortar, asphalt, brick, cement, stone and composite materials thereof.
A processing method comprising processing the workpiece using the processing apparatus according to any one of claims 12 to 14.