JP5114986B2 - Drilling method - Google Patents
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- JP5114986B2 JP5114986B2 JP2007073067A JP2007073067A JP5114986B2 JP 5114986 B2 JP5114986 B2 JP 5114986B2 JP 2007073067 A JP2007073067 A JP 2007073067A JP 2007073067 A JP2007073067 A JP 2007073067A JP 5114986 B2 JP5114986 B2 JP 5114986B2
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- 238000005553 drilling Methods 0.000 title claims description 44
- 238000000034 method Methods 0.000 title claims description 34
- 238000004080 punching Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 description 6
- 239000004744 fabric Substances 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- Laser Beam Processing (AREA)
- Drilling And Boring (AREA)
Description
本発明は、主として電気機器等の部品として用いられる印刷配線板の製造に好適な穴開け加工方法に関する。 The present invention relates to a punching method suitable for manufacturing a printed wiring board mainly used as a component of an electric device or the like.
可撓性を有する（すなわち、自立性のない）シート状の被加工物として、例えば印刷配線板の構成部材であるプリプレグがある。印刷配線板は年々薄型化されており、そのプリプレグは、可撓性を有するシート状の部材となってきている。そのような印刷配線板の新たな製造方法も開発されており、例えば、予めプリプレグに穴を形成しておき、その穴に導電性ペースト等を埋め込んだ後、加熱プレスする方法が携帯電話機等の部品として用いられる印刷配線板に広く採用されている。 As a sheet-like workpiece having flexibility (that is, having no self-supporting property), for example, there is a prepreg that is a constituent member of a printed wiring board. Printed wiring boards are becoming thinner year by year, and their prepregs have become flexible sheet-like members. A new manufacturing method of such a printed wiring board has also been developed. For example, a method of pre-forming a hole in a prepreg, embedding a conductive paste or the like in the hole, and then performing heat pressing is used for a mobile phone or the like. Widely used in printed wiring boards used as parts.
上述したようなプリプレグ等、可撓性を有するシート状の被加工物に対する穴の形成は、自立性を有する板状の被加工物に対する穴の形成に用いられてきた従来の数値制御（ＮＣ）穴開け機によって行われるのが一般的である。 The conventional numerical control (NC) that has been used to form holes in plate-like workpieces that are self-supporting, such as the formation of holes in flexible sheet-like workpieces such as the prepregs described above. It is common to use a punching machine.
例えば、特許文献１には、図６に示されるように、貫通穴１ａが形成された冶具板１上に、可撓性を有するシート状の被加工物Ｓを水平に載置し、冶具板１の貫通穴１ａに対応する位置にレーザ光線Ｌを照射することで被加工物Ｓに穴Ｈを形成する穴開け加工方法が記載されている。
For example, in Patent Document 1, as shown in FIG. 6, a flexible sheet-like workpiece S is placed horizontally on a jig plate 1 in which a
また、特許文献２には、図７に示されるように、可撓性を有するシート状の被加工物Ｓの両端をチャックして外側に張力をかけることにより被加工物Ｓを水平に保持し、所定の位置にレーザ光線Ｌを照射することで被加工物Ｓに穴Ｈを形成する穴開け加工方法が記載されている。
しかしながら、特許文献１記載の穴開け加工方法にあっては、被加工物の種類毎に専用の冶具板を準備しなければならないため、低コスト化が妨げられるおそれがある。更に、被加工物に形成する穴間のピッチが小さい場合には、冶具板の貫通穴が接近し過ぎるという問題もある。また、特許文献２記載の穴開け加工方法にあっては、被加工物が湾曲するように垂れ下がった状態で穴が形成されるため、穴の形成位置の精度が低下するおそれがある。 However, in the drilling method described in Patent Document 1, it is necessary to prepare a dedicated jig plate for each type of workpiece, which may hinder cost reduction. Furthermore, when the pitch between the holes formed in the workpiece is small, there is a problem that the through holes of the jig plate are too close. In addition, in the drilling method described in Patent Document 2, since the hole is formed in a state of being hung so that the workpiece is curved, the accuracy of the hole forming position may be lowered.
そこで、本発明は、このような事情に鑑みてなされたものであり、可撓性を有するシート状の被加工物に穴を形成するに際し、低コスト化及び穴の形成位置の高精度化を図ることができる穴開け加工方法を提供することを目的とする。 Therefore, the present invention has been made in view of such circumstances, and when forming a hole in a sheet-like workpiece having flexibility, the cost is reduced and the position of the hole is highly accurate. An object of the present invention is to provide a drilling method that can be achieved.
上記目的を達成するために、本発明に係る穴開け加工方法は、可撓性を有するシート状の被加工物に穴を形成するための穴開け加工方法であって、被加工物の厚さ方向が鉛直方向と垂直となるように被加工物を保持し、被加工物の保持は、被加工物の揺れが防止されるように被加工物の周縁部のうち少なくとも隅部をチャックすることで行われ、その状態で被加工物に穴を形成することを特徴とする。 In order to achieve the above object, a drilling method according to the present invention is a drilling method for forming a hole in a flexible sheet-like workpiece, the thickness of the workpiece. direction holds the workpiece such that the vertical direction and the vertical, the holding of the workpiece, the chuck at least a corner portion of the peripheral portion of the workpiece as shaking of the workpiece is prevented In this state, a hole is formed in the workpiece.
この穴開け加工方法によれば、被加工物の種類毎に専用の冶具板を準備する必要がなく、また、被加工物が湾曲するように垂れ下がることがないため、可撓性を有するシート状の被加工物に穴を形成するに際し、低コスト化及び穴の形成位置の高精度化を図ることができる。また、この穴開け加工方法によれば、被加工物の保持が、被加工物の揺れが防止されるように被加工物の周縁部のうち少なくとも隅部をチャックすることにより行われるため、穴の形成位置の更なる高精度化を図ることができる。 According to this drilling method, it is not necessary to prepare a dedicated jig plate for each type of workpiece, and the workpiece does not hang down so as to be curved, so that it has a flexible sheet shape. When forming a hole in the workpiece, it is possible to reduce the cost and increase the accuracy of the hole forming position. Further, according to this drilling method, the workpiece is held by chucking at least the corner of the peripheral edge of the workpiece so that the workpiece is prevented from shaking. It is possible to further increase the accuracy of the formation position of the.
本発明に係る穴開け加工方法は、被加工物の厚さが２μｍ〜２ｍｍである場合に特に有効である。 The drilling method according to the present invention is particularly effective when the thickness of the workpiece is 2 μm to 2 mm.
本発明に係る穴開け加工方法においては、穴の形成はレーザ光線の照射によって行われてもよいし、ドリル又はエンドミルによって行われてもよいし、パンチによって行われてもよい。 In the drilling method according to the present invention, the hole may be formed by laser beam irradiation, a drill or an end mill, or a punch.
本発明によれば、可撓性を有するシート状の被加工物に穴を形成するに際し、低コスト化及び穴の形成位置の高精度化を図ることができる。 According to the present invention, when forming a hole in a flexible sheet-like workpiece, it is possible to reduce the cost and increase the accuracy of the hole forming position.
以下、本発明の好適な実施形態について、図面を参照して詳細に説明する。 DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
図１に示されるように、チャッキング装置１１を用いて、可撓性を有する矩形シート状の被加工物Ｓの上一辺をチャックし、被加工物Ｓを鉛直方向下向きに懸垂させる。これにより、被加工物Ｓは、その自重で真っ直ぐに（すなわち、湾曲することなく）鉛直方向下向きに垂れ下がり、被加工物Ｓの厚さ方向が鉛直方向と略垂直となるように保持される。
As shown in FIG. 1, the
続いて、その状態で数値制御穴開け機（ここでは、穴開け工具としてレーザ光線を使用するレーザ穴開け機）を用いて、被加工物Ｓの所定の位置にレーザ光線Ｌを照射することで穴Ｈを形成する。レーザ光線Ｌとしては、波長が９．３μｍ〜９．４μｍの遠赤外線である炭酸ガスレーザ、紫外線であるＵＶ−ＹＡＧレーザ、エキシマレー等が用いられる。 Subsequently, by using a numerically controlled drilling machine (here, a laser drilling machine that uses a laser beam as a drilling tool) in that state, a predetermined position of the workpiece S is irradiated with the laser beam L. Hole H is formed. As the laser beam L, a carbon dioxide gas laser that is a far infrared ray having a wavelength of 9.3 μm to 9.4 μm, a UV-YAG laser that is an ultraviolet ray, an excimer, or the like is used.
以上の穴開け加工方法によれば、被加工物Ｓの種類毎に専用の冶具板を準備する必要がなく、また、被加工物Ｓが湾曲するように垂れ下がることがないため、可撓性を有するシート状の被加工物Ｓに穴Ｈを形成するに際し、低コスト化及び穴の形成位置の高精度化を図ることができる。 According to the above drilling method, it is not necessary to prepare a dedicated jig plate for each type of the workpiece S, and the workpiece S does not hang down so as to be curved. When forming the hole H in the sheet-like workpiece S having, it is possible to reduce the cost and increase the accuracy of the hole forming position.
また、被加工物Ｓが軽くなるほどその自重が小さくなり、被加工物Ｓの伸びが抑制される。これにより、その状態で数値制御穴開け機を用いて被加工物Ｓに穴Ｈを形成すると、被加工物Ｓの伸びが非常に小さい状態で穴Ｈが形成される。そのため、極めて位置精度の高い穴開け加工が可能となる。 Further, the lighter the workpiece S, the smaller its own weight, and the elongation of the workpiece S is suppressed. Thereby, if the hole H is formed in the workpiece S using the numerically controlled drilling machine in that state, the hole H is formed in a state where the elongation of the workpiece S is very small. Therefore, drilling with extremely high positional accuracy is possible.
更に、図２に示されるように、被加工物Ｓの上下二辺をチャックしたり、図３に示されるように、被加工物Ｓの上一辺及び下二隅をチャックしたりすることが好ましく、図４に示されるように、被加工物Ｓの上下左右四辺をチャックしたり、図５に示されるように、被加工物Ｓの上下四隅をチャックしたりすることがより好ましい。これらによれば、被加工物Ｓの揺れや自重による伸びが防止されるため、穴Ｈの形成位置の更なる高精度化を図ることができる。 Furthermore, it is preferable to chuck the upper and lower two sides of the workpiece S as shown in FIG. 2 or to chuck the upper and lower corners of the workpiece S as shown in FIG. 4, it is more preferable to chuck the upper, lower, left and right sides of the workpiece S, and chuck the upper and lower four corners of the workpiece S as shown in FIG. According to these, since the workpiece S is prevented from being shaken or stretched due to its own weight, the accuracy of the formation position of the hole H can be further increased.
なお、上述の穴開け加工方法は、被加工物Ｓの厚さが２μｍ〜２ｍｍである場合に特に有効であるが、望ましい厚さは材質によって異なる。つまり、厚さが１ｍｍで自立性が発現する材料であれば、被加工物Ｓの厚さが１ｍｍ以上の場合、従来の水平方向の保持での穴開け加工で十分である。また、厚さが５μｍで鉛直方向下向きに懸垂させると切れてしまうほど脆い材料であれば、被加工物Ｓの厚さとして１０μｍ以上の一定の厚さが必要である。例えば、上述の穴開け加工方法を印刷配線板用材料の穴開け加工に適用する場合は、厚さが９μｍ〜０．５ｍｍの被加工物Ｓが有用である。 The above-described drilling method is particularly effective when the thickness of the workpiece S is 2 μm to 2 mm, but the desired thickness varies depending on the material. That is, if the thickness of the workpiece S is 1 mm or more as long as the material has a thickness of 1 mm, the conventional drilling process with holding in the horizontal direction is sufficient. Further, if the thickness is 5 μm and the material is so brittle that it is cut when suspended vertically downward, the workpiece S needs to have a certain thickness of 10 μm or more. For example, when the above-described drilling method is applied to drilling of printed wiring board material, a workpiece S having a thickness of 9 μm to 0.5 mm is useful.
また、レーザ穴開け機に代えて、穴開け工具としてドリル又はエンドミルを使用するドリル穴開け機や、穴開け工具としてオス型及びメス型を使用するパンチ穴開け機を用いてもよい。数値制御穴開け機による穴開け加工においては、被加工物Ｓ及び穴開け工具の少なくとも一方を移動させながら穴開け加工が行われる。一般的に、レーザ光線Ｌを穴開け工具として用いる場合は、被加工物Ｓを移動させ、レーザ光線Ｌを固定する方法が採用されることが多い。また、ドリル又はエンドミル、或いはパンチを穴開け工具として用いる場合は、例えば、Ｘ方向に被加工物Ｓを移動させ、Ｙ軸方向に穴開け工具を移動させる方法、或いは被加工物Ｓを固定し、穴開け工具を移動させる方法が採用されることが多い。 Instead of the laser drilling machine, a drilling machine using a drill or an end mill as a drilling tool, or a punching machine using a male type and a female type as a drilling tool may be used. In drilling with a numerically controlled drilling machine, drilling is performed while moving at least one of the workpiece S and the drilling tool. In general, when the laser beam L is used as a drilling tool, a method of moving the workpiece S and fixing the laser beam L is often employed. When using a drill, end mill, or punch as a drilling tool, for example, a method of moving the workpiece S in the X direction and moving the drilling tool in the Y axis direction, or fixing the workpiece S. In many cases, a method of moving a drilling tool is employed.
［実施例１］
厚さが５０μｍ、寸法が３４０ｍｍ×５１０ｍｍのガラス布エポキシプリプレグ（日立化成工業（株）製、商品名ＧＥＡ−６７９ＦＧ）を準備し、このガラス布エポキシプリプレグの３４０ｍｍ側の二辺をチャックして、その厚さ方向が鉛直方向と略垂直となるように保持し（すなわち、鉛直に保持し）、４００ｍｍの間隔でインクによりマークを付けた。
[Example 1]
A glass cloth epoxy prepreg having a thickness of 50 μm and a dimension of 340 mm × 510 mm (manufactured by Hitachi Chemical Co., Ltd., trade name GEA-679FG) is prepared, and two sides on the 340 mm side of the glass cloth epoxy prepreg are chucked, The thickness direction was held so as to be substantially perpendicular to the vertical direction (that is, held in the vertical direction), and the ink was marked with an interval of 400 mm.
チャックを外した後、ガラス布エポキシプリプレグを水平台上に載置し、マークの間隔を測定した結果、４００ｍｍであった。この方式で、マーキングを数値制御穴開け機に置き換えれば、同等の精度が得られ、且つ専用の冶具板も必要ない。 After removing the chuck, the glass cloth epoxy prepreg was placed on a horizontal table and the distance between the marks was measured. As a result, it was 400 mm. By replacing the marking with a numerically controlled drilling machine in this manner, the same accuracy can be obtained, and a dedicated jig plate is not required.
［比較例１］
実施例１と同じガラス布エポキシプリプレグの３４０ｍｍ側の二辺をチャックして、その厚さ方向が鉛直方向と略平行となるように保持し（すなわち、水平に保持し）、ガラス布エポキシプリプレグの重力による垂れ下がりを防止するため、チャック間に２ｋｇ重（１９．６Ｎ）の張力をかけ、４００ｍｍの間隔でインクによりマークを付けた。
[Comparative Example 1]
The two sides on the 340 mm side of the same glass cloth epoxy prepreg as in Example 1 are chucked and held so that the thickness direction is substantially parallel to the vertical direction (that is, held horizontally). In order to prevent sag due to gravity, a tension of 2 kg (19.6 N) was applied between the chucks, and marks were made with ink at intervals of 400 mm.
チャックを外した後、ガラス布エポキシプリプレグを水平台上に載置し、マークの間隔を測定した結果、３９９．５ｍｍであった。つまり、張力をかけた分だけガラス布エポキシプリプレグが伸び、その状態でマーキングされたため、チャックを外した後、０．５ｍｍの精度悪化を起こした。このマーキングを数値制御穴開け機に置き換えれば、同等の精度悪化が確認される。 After removing the chuck, the glass cloth epoxy prepreg was placed on a horizontal table and the distance between the marks was measured. As a result, it was 399.5 mm. That is, the glass cloth epoxy prepreg was stretched by the amount of tension applied, and was marked in that state. Therefore, after removing the chuck, the accuracy deteriorated by 0.5 mm. If this marking is replaced with a numerically controlled drilling machine, an equivalent deterioration in accuracy is confirmed.
Ｓ…被加工物、Ｈ…穴。 S ... Workpiece, H ... Hole.
Claims (5)
前記被加工物の厚さ方向が鉛直方向と垂直となるように前記被加工物を保持し、
前記被加工物の保持は、前記被加工物の揺れが防止されるように前記被加工物の周縁部のうち少なくとも隅部をチャックすることで行われ、
その状態で前記被加工物に前記穴を形成することを特徴とする穴開け加工方法。 A punching method for forming a hole in a flexible sheet-like workpiece,
Wherein holding the workpiece the as the thickness direction of the workpiece is vertical and vertical,
Holding the workpiece is performed by chucking at least a corner of the peripheral edge of the workpiece so as to prevent the workpiece from shaking.
A hole forming method, wherein the hole is formed in the workpiece in that state.
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| JP2007073067A JP5114986B2 (en) | 2006-03-20 | 2007-03-20 | Drilling method |
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| JP2007073067A JP5114986B2 (en) | 2006-03-20 | 2007-03-20 | Drilling method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH01310896A (en) * | 1988-06-08 | 1989-12-14 | Canon Inc | Arrangement structure of drilling device and transport device |
| JP3071227B2 (en) * | 1991-03-06 | 2000-07-31 | 日本たばこ産業株式会社 | Band-shaped sheet punch |
| JPH05154797A (en) * | 1991-12-02 | 1993-06-22 | Japan Steel Works Ltd:The | Printed board machining method and device |
| DE4322791B4 (en) * | 1993-07-08 | 2005-06-30 | Heidelberger Druckmaschinen Ag | Rotary press |
| JP4857544B2 (en) * | 2004-10-29 | 2012-01-18 | 富士電機株式会社 | Flexible substrate drilling method, thin-film substrate through-hole processing apparatus, and thin-film solar cell manufacturing apparatus |
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