JP2003080410A - Hole machining method of plate type member and plate type member on which hole is machined under this method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hole machining method of a plate type member capable of preventing lowering in strength of the plate type member on which a hole is machined and the plate type member on which the hole is machined under the method. SOLUTION: Hole machining is carried out on a glass pane 201 by using a hole machining device 200. The hole machining device 200 is furnished with a lower side core drill 202, an upper side core drill 203 and a seamer 207. The lower side core drill 202 has a blade part 204, the upper side core drill 203 has a blade part 205 and the seamer 207 has a blade part 208. A thread surface 211 is formed roughly coaxially with straight holes 209, 210 from an upper surface of the glass pane 201 by the blade part 208 of the seamer 207 on the glass pane 201 in the neighborhood of the upper surface of which a step difference 206 is produced, and the step difference 206 is removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a hole in a plate member and a plate member in which holes are formed by the method.

[0002]

2. Description of the Related Art A conventional plate-shaped member hole forming method is shown in FIG.
As shown in FIG. 3, a hole is formed in the glass plate 401 by using the hole forming device 400 of the upper and lower uniaxial type. Hole processing device 400
Comprises a lower core drill 402 and an upper core drill 404 fitted with a seamer 403.

In this hole drilling apparatus 400, a straight hole 405 is first formed by the lower core drill 402 from the lower surface of the glass plate 401 to approximately the center of the glass plate 401, and then the upper core drill 404 is used to form the glass plate 4.
A straight hole 406 is formed from the upper surface of 01 almost coaxially with the straight hole 405 and penetrates the straight hole 405. At this time, even if the upper core drill 404 is coaxially arranged with respect to the lower core drill 402, misalignment usually occurs, which causes straight holes 405, 4 to be formed in the hole processing portions (straight holes 405, 406).
A step 408 is formed at the joint portion of 06. After the upper core drill 404 forms the straight hole 406, the thread surface 407 is attached to the edge of the straight hole 406 by the seamer 403.
To form.

[0004]

However, since the step 408 is located far from the edge of the straight hole 406 and cannot be ground by the seamer 403, it remains at the joint between the straight holes 405 and 406. Since the step 408 is a discontinuous surface as a matter of course, there is a problem that the strength of the glass plate 401 is reduced.

An object of the present invention is to provide a plate-shaped member hole processing method capable of preventing the strength of a plate-shaped member in which holes are processed from being reduced, and a plate-shaped member in which holes are processed by the method. To provide.

[0006]

In order to achieve the above-mentioned object, the method of boring a plate-shaped member according to claim 1, wherein a plate-shaped member is formed by a first core drill from one surface thereof to the plate-shaped member. The first hole is drilled to a predetermined depth, and a second core drill is used to connect the plate-shaped member from the other surface so as to be substantially coaxial with the first hole and to be connected to the first hole. In the method of processing a plate-shaped member for processing two holes, expanding the first hole and the second hole connected to each other by a third core drill having a diameter larger than that of the first and second core drills. Is characterized by.

According to the hole drilling method for the plate-like member of the first aspect, the third hole having a diameter larger than those of the first and second core drills.
Since the diameter of the first hole and the second hole that are connected to each other is increased by the core drill, it is possible to easily remove the step generated in the hole-processed portion of the plate-shaped member, and thus to improve the strength of the plate-shaped member. It is possible to prevent the decrease.

A method of drilling holes in a plate member according to claim 2
A first core drill is used to form a first hole in the plate member from one surface thereof to a predetermined depth of the plate member.
In the method for processing a plate-shaped member, the second hole is processed in the plate-shaped member from the other surface so as to be connected to the first hole substantially coaxially with the first hole by the core drill of The predetermined depth reaches the vicinity of the other surface, and after the processing of the second hole, a thread surface is formed from the other surface to the second hole by a seamer.

According to the method of boring a plate-shaped member of claim 2, the first hole is drilled in the plate-shaped member from the one surface of the plate-shaped member to the vicinity of the other surface of the plate-shaped member by the first core drill. After the second hole is processed by the second core drill, the thread surface is formed from the other surface to the second hole by the seamer, so that the step generated near the other surface of the plate member can be easily performed. Therefore, it is possible to prevent the reduction of the strength of the plate-shaped member.

A method of drilling holes in a plate member according to claim 3 is
A hole is formed in the plate member from the one surface to the vicinity of the other surface by a core drill, and after the hole is formed, a thread surface is formed from the other surface to the hole by a seamer.

According to the third aspect of the present invention, there is provided a method for drilling a hole in a plate member, wherein a core drill is used to drill a hole from one surface of the plate member to the vicinity of the other surface, and then a hole is cut from the other surface by a seamer. Since the thread surface is formed on the surface, it is possible to prevent a step from being formed in the hole-processed portion of the plate-shaped member, and thus,
It is possible to prevent a decrease in the strength of the plate member.

According to a fourth aspect of the present invention, there is provided a method for forming a hole in a plate member,
The hole drilling method for a plate member according to claim 3, wherein the core drill is configured to drill the hole into a cylindrical shape.

According to the hole drilling method for the plate-shaped member of the fourth aspect, since the core drill processes the hole into a cylindrical shape, the work amount of the core drill can be reduced.

A method of drilling holes in a plate member according to claim 5
The plate-shaped member hole drilling method according to claim 3, wherein the core drill is configured to drill the hole into a cylindrical shape.

According to the hole drilling method for the plate member of the fifth aspect, since the core drill drills the hole in a cylindrical shape, the grinding amount of the seamer can be reduced.

A method of drilling holes in a plate member according to claim 6 is
The hole drilling method for a plate-shaped member according to any one of claims 3 to 5, wherein the seamer is provided with another core drill at a tip thereof.

According to the method of boring a plate-shaped member of claim 6, since the seamer is provided with another core drill at its tip, the grinding amount of the seamer can be further reduced.

A plate-shaped member according to a seventh aspect is characterized in that a hole is formed by the hole-forming method for a plate-shaped member according to any one of the first to sixth aspects.

According to the plate-shaped member of the seventh aspect, it is possible to prevent the decrease in strength.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION A hole drilling apparatus for carrying out a hole drilling method for a plate-shaped member according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a vertical cross-sectional view of a main part of a hole drilling device for carrying out the hole drilling method for a plate-shaped member according to the first embodiment of the present invention.

In FIG. 1A, the glass plate 100 is perforated by using a perforation device 101. The hole drilling apparatus 101 includes a lower core drill 102 and an upper core drill 104 to which a seamer 103 is attached and which has the same outer diameter as the lower core drill 102.

In the upper and lower core drills 102 and 104,
First, a straight hole 105 is formed by the lower core drill 102 (first core drill) from the lower surface of the glass plate 100 to approximately the center of the glass plate 100, and then the upper core drill 104 (second core drill) is used to form the glass plate 1.
00, the straight hole 106 is formed almost coaxially with the straight hole 105 and is connected to the straight hole 105. The upper core drill 104 is the lower core drill 102.
Even if they are arranged coaxially with respect to each other, a misalignment usually occurs, which causes a hole processing portion (straight hole 10).
5, 106), a step 107 is formed at the joint between the straight holes 105, 106.

The glass plate 100 has a material composition containing SiO ₂ as a main component. Straight hole 10 in glass plate 100
5, 106 have a hole diameter of, for example, 17.5 mmφ, and the step 107 is, for example, 0.5 mm due to the misalignment of the upper and lower core drills 102, 104 (FIG. 1A).

As shown in FIG. 1 (b), the hole drilling apparatus 101 includes the glass plate 1 having the step 107 as described above.
For drilling holes in 00, for example, 19.0 mm outer diameter
Cylindrical upper core drill 10 with φ and inner diameter 17.0 mm
8 (third core drill), and the upper core drill 108 further has a blade portion 109 having a length of 18.0 mm, for example, at the lower portion thereof. Above the blade portion 109, the upper core drill 108 has, for example, an apex angle of 90 ° and an outer diameter of 35.0 m.
A substantially frustoconical seamer 110 having an mφ, an inner diameter of 19.0 mmφ, and a maximum height of 13 mm may be externally fitted with the conical surface facing downward in the vertical direction, and may be fixed by a screw. The seamer 110 is attached to the conical surface. , For example, length 11.3 in the bus-bar direction
It has a blade part 111 of mm.

The operation of the hole drilling apparatus 100 shown in FIG. 1 will be described below.

Referring to FIG. 1, the hole drilling apparatus 101 includes a straight hole 10 which is formed by the lower core drill 102 from the lower surface of the glass plate 100 to the substantial center of the glass plate 100.
5 to form the glass plate 1 by the upper core drill 104.
The straight hole 106 is formed substantially coaxially with the straight hole 105 from the upper surface of 00 and is connected to the straight hole 105. Then, by the blade portion 109 of the upper core drill 108, the straight hole 112 is formed substantially coaxially with the straight holes 105 and 106 from the upper surface of the glass plate 100 in which the step 107 has been formed.
The diameters of 5 and 106 are increased, and the step 107 is removed. If necessary, the blade portion 1 of the seamer 103 and / or the seamer 110
A thread surface is formed on the edge of the straight hole 106 and / or 112 by 11.

According to the hole drilling apparatus 101 of FIG. 1, the straight holes 10 connected to each other by the upper core drill 108 having a diameter larger than that of the straight holes 105 and 106.
Since the diameters of the glass plates 5 and 106 are increased, it is possible to easily remove the step 107 generated in the hole-processed portions (straight holes 105 and 106) of the glass plate 100, thereby preventing the strength of the glass plate 100 from being lowered. can do.

FIG. 2 is a vertical cross-sectional view of the essential parts of a hole drilling apparatus for carrying out the hole drilling method for a plate-shaped member according to the second embodiment of the present invention.

In FIG. 2A, a hole is formed in a glass plate 201 (plate member) using a hole forming device 200. The hole drilling device 200 has, for example, an outer diameter of 19.0 mmφ and an inner diameter of 1
7.0 mmφ lower core drill 202 (first core drill), for example, outer diameter 19.0 mmφ, inner diameter 17.0 mm
and a φ upper core drill 203 (second core drill). The lower core drill 202 has a blade portion 204, and the upper core drill 203 has a blade portion 205. The blade portion 204 is longer than the blade portion 205, and the blade portion 205 has a length of 6.0 m, for example.
m, the blade portion 204 has a length of 18.0 mm, for example. The upper core drill 203 and the lower core drill 202 have the same outer diameter.

Further, the hole drilling apparatus 200 is shown in FIG.
As shown in FIG.
Equipped with a seamer 207 for drilling holes
7 is, for example, a vertical angle of 90 °, an outer diameter of 33.5 mmφ, an inner diameter of 1
It has a diameter of 7.5 mmφ and a maximum height of 13 mm, and is externally fitted with the conical surface facing downward in the vertical direction and fixed by screws. The seamer 207 has, for example, a length of 11.3 m in the busbar direction.
It has a blade part 208 of m. The inner diameter of the seamer 207 is smaller than the outer diameter of the lower core drill 202.

The operation of the hole drilling apparatus 200 shown in FIG. 2 will be described below.

In FIG. 2, the hole drilling device 200 forms a straight hole 209 from the lower surface of the glass plate 201 to the vicinity of the upper surface of the glass plate 201 by the lower core drill 202, and the glass plate 201 by the upper core drill 203.
A straight hole 210 is formed substantially coaxially with the straight hole 209 from the upper surface and is connected to the straight hole 209 (FIG. 2A). Next, in the glass plate 201 having the step 206, straight holes 209, 210 are formed from the upper surface of the glass plate 201 by the blade portion 208 of the seamer 207.
A yarn surface 211 is formed almost coaxially with and the step 206 is removed (FIG. 2 (b)).

According to the hole drilling apparatus 200 of FIG. 2, the glass plate 201 having the step 206 near the upper surface of the glass plate 201 is straightened from the upper surface of the glass plate 201 by the blade portion 208 of the seamer 207. Since the thread surface 211 is formed substantially coaxially with the holes 209 and 210, the step 206 can be removed, and thus the strength of the glass plate 201 can be prevented from being lowered. In addition, in the hole forming method for the plate-shaped member according to the second embodiment of the present invention, the seamer 2
Since it is not necessary to integrate 07 and the upper core drill 203, the tool cost and the tool maintenance cost can be reduced.

FIG. 3 is a vertical cross-sectional view of the essential parts of a hole drilling apparatus for carrying out the hole drilling method for a plate-shaped member according to the third embodiment of the present invention.

In FIG. 3, the glass plate 301 is perforated using the perforation device 300. The hole processing device 300 is
For example, a lower core drill 302 having an outer diameter of 19.0 mmφ and an inner diameter of 17.0 mmφ and an upper core drill 303 having an outer diameter of 17.5 mmφ and an inner diameter of 15.0 mmφ are provided.

The lower core drill 302 has, for example, a length of 1
It has an inner blade portion 304 and an outer blade portion 305 of 8.0 mm.
The upper core drill 303 has, for example, a length of 6.0 at its lower end.
It has a blade portion 306 of mm. Above the blade portion 306, the upper core drill 303 has, for example, an apex angle of 90 °, an outer diameter of 33.5 mmφ, an inner diameter of 17.5 mmφ, and a maximum height of 13 m.
A substantially frusto-conical seamer 307 of m is externally fitted and fixed. The seamer 307 has a blade portion 308 having a length of 11.3 mm in the generatrix direction on its conical surface.

The operation of the hole drilling apparatus 300 shown in FIG. 3 will be described below.

First, the inner blade portion 30 of the lower core drill 302
4 and the outer blade portion 305 form a cylindrical hole 309 from the lower surface of the glass plate 301 to the vicinity of the upper surface of the glass plate 301, and then the blade portion 306 of the upper core drill 303 from the upper surface of the glass plate 301. The straight hole 310 is formed almost coaxially with the cylindrical hole 309 to form the cylindrical hole 309.
Connect to. As a result, the portion of the glass plate 301 surrounded by the cylindrical hole 309 falls off. Then, the thread surface 311 is formed at the edge of the straight hole 310 by the seamer 307 integrated with the upper core drill 303.

According to the hole drilling apparatus 300 of FIG. 3, the cylindrical hole 309 is formed from the lower surface of the glass plate 301 to the vicinity of the upper surface of the glass plate 301 by the inner blade portion 304 and the outer blade portion 305 of the lower core drill 302. Then, the straight hole 31 is formed substantially coaxially with the cylindrical hole 309 from the upper surface of the glass plate 301 by the blade portion 306 of the upper core drill 303.
Since 0 is formed and connected to the cylindrical hole 309, it is possible to prevent a step from being formed in the hole-processed portion of the glass plate 301, and thus to prevent the strength of the glass plate 301 from decreasing. .

In the third embodiment, the lower core drill 302 may be replaced by a lower core drill 202 having only an outer blade portion as shown in FIG. 2 (a). Thereby, the hole 309 can be processed into a cylindrical shape to reduce the grinding amount of the seamer 307.

The core drill and seamer according to the above-mentioned first to third embodiments are mounted on a drill rotating device (not shown) capable of moving up and down, and a hole processing part (straight hole, cylinder) is formed on a glass plate. Shaped holes and thread surface), for example, 700 rpm at low speed and 1500 r at high speed
Vertical movement is performed while rotating at pm.

The materials of the blade portions of the upper and lower core drills and the blade portion of the seamer in the first to third embodiments are diamond layers, particularly metal bond diamond layers (diamond grinding) from the viewpoint of strength and accuracy of drilling. It is preferable that the particles are formed of a metal matrix having a bond matrix shape of metal particles, and may be made of a cemented carbide material.

In the above-mentioned first to third embodiments, the lower core drill directed upward in the vertical direction is used. However, in the case where the thread surface is formed on the lower surface of the glass plate, the lower core drill and the seamer are used. May be integrated. Moreover, you may process a countersink as needed.

In the above first to third embodiments,
A polishing liquid such as water can be appropriately supplied for the purpose of cooling the upper and lower core drills, the blade portion of the seamer, and the hole processing portion of the glass plate during the processing of the glass plate.

In the above first to third embodiments,
The size, strength, etc. of each part of the hole processing device 101, 200, or 300 depends on the thickness of the glass plate 100, 201, or 301 to be hole processed, the size of the hole processed part, the property of the polishing liquid supplied, and the like. Can be changed as appropriate.

In the first to third embodiments, the plate member is the glass plate 100, 201, or 301.
The plate is not limited to the glass plate 100, 201, or 301, but may be a synthetic resin plate made of an organic material such as polycarbonate, polystyrene, polymethylmethacrylate, or a plate made of an amorphous material. Furthermore, two or more of these plate-shaped members may be laminated.

[0048]

According to the hole drilling method for the plate-shaped member of the first aspect, the first hole and the second hole connected to each other by the third core drill having a diameter larger than that of the first and second core drills. Since the diameter is increased, it is possible to easily remove the step formed in the hole-processed portion of the plate-shaped member, and thus prevent the reduction in strength of the plate-shaped member.

According to the method for boring a plate-shaped member of claim 2, the first hole is bored in the plate-shaped member from the one surface of the plate-shaped member to the vicinity of the other surface of the plate-shaped member by the first core drill. After the second hole is processed by the second core drill, the thread surface is formed from the other surface to the second hole by the seamer, so that the step generated near the other surface of the plate member can be easily performed. Therefore, it is possible to prevent the reduction of the strength of the plate-shaped member.

According to the method of boring a plate member of claim 3, after boring the plate member from the one surface to the vicinity of the other surface by the core drill, the hole is drilled from the other surface by the seamer. Since the thread surface is formed on the surface, it is possible to prevent a step from being formed in the hole-processed portion of the plate-shaped member, and thus,
It is possible to prevent a decrease in the strength of the plate member.

According to the hole drilling method for the plate member of the fourth aspect, since the core drill processes the hole into a cylindrical shape, the work amount of the core drill can be reduced.

According to the hole drilling method for the plate member of the fifth aspect, since the core drill drills the hole in a cylindrical shape, the grinding amount of the seamer can be reduced.

According to the method for boring a plate-shaped member of claim 6, since the seamer is provided with another core drill at its tip, it is possible to further reduce the grinding amount of the seamer.

According to the plate-shaped member of the seventh aspect, it is possible to prevent the decrease in strength.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a main part of a hole drilling apparatus that executes a hole drilling method for a plate-shaped member according to a first embodiment of the present invention, in which (a) forms straight holes 105 and 106. And the step (b) shows the step of removing the step 107.

FIG. 2 is a vertical cross-sectional view of a main part of a hole drilling apparatus that executes a hole drilling method for a plate-shaped member according to a second embodiment of the present invention, in which (a) forms straight holes 209 and 210. (B) shows the step of removing the step 206.

FIG. 3 is a vertical cross-sectional view of a main part of a hole drilling device that performs a hole drilling method for a plate-shaped member according to a third embodiment of the present invention.

FIG. 4 is a vertical cross-sectional view of a main part of a hole drilling apparatus that executes a conventional hole drilling method for a plate-shaped member.

[Explanation of symbols]

100 glass plates 101 hole processing equipment 108 Upper core drill 112 straight hole 200 hole processing equipment 202 Lower core drill 206 step 209 straight hole 211 Thread surface 302 Lower core drill 304 Inner blade 305 Outer blade 309 cylindrical hole

Claims (7)

[Claims] 1. A first core drill is used to form a first hole from one surface of the plate member to a predetermined depth of the plate member, and a second core drill is used to form the other surface of the plate member. In the method of processing a plate-shaped member, wherein a second hole is processed so as to be substantially coaxial with the first hole and to be connected to the first hole, the first hole having a diameter larger than those of the first and second core drills. A hole drilling method for a plate-like member, comprising expanding the first hole and the second hole connected to each other by the core drill of No. 3. 2. A plate-shaped member is machined with a first core drill to form a first hole from one surface thereof to a predetermined depth of the plate-shaped member, and a second core drill is formed on the other surface of the plate-shaped member. In the method of processing a plate-shaped member for processing a second hole so as to be substantially coaxial with the first hole and to be connected to the first hole, the predetermined depth is near the other surface. A hole-forming method for a plate-shaped member, wherein a thread surface is formed from the other surface to the second hole by a seamer after processing the second hole. 3. A core drill is used to machine a hole from one surface of the plate member to the vicinity of the other surface, and after the hole is machined, a thread surface is formed in the hole from the other surface by a seamer. A method of drilling holes in a plate-shaped member. 4. The method for drilling holes in a plate-like member according to claim 3, wherein the core drill is configured to machine the holes into a cylindrical shape. 5. The method of drilling a plate-shaped member according to claim 3, wherein the core drill is configured to machine the hole into a cylindrical shape. 6. The seamer according to claim 3, further comprising another core drill at a tip thereof.
Item 7. A method for drilling holes in a plate-shaped member according to item. 7. A plate-shaped member, wherein a hole is formed by the hole forming method according to any one of claims 1 to 6.