JPH05116014A - Drilling method and drilling machine - Google Patents
Drilling method and drilling machineInfo
- Publication number
- JPH05116014A JPH05116014A JP27998591A JP27998591A JPH05116014A JP H05116014 A JPH05116014 A JP H05116014A JP 27998591 A JP27998591 A JP 27998591A JP 27998591 A JP27998591 A JP 27998591A JP H05116014 A JPH05116014 A JP H05116014A
- Authority
- JP
- Japan
- Prior art keywords
- drill
- drilling
- vibration
- work plate
- printed circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はドリル加工方法及びドリ
ル加工機に関し、特に、プリント基板等の薄肉板の小径
穴加工に適用して有用なものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drilling method and a drilling machine, and is particularly useful when applied to drilling small-diameter holes in a thin plate such as a printed circuit board.
【０００２】[0002]
【従来の技術】小径ドリル加工機として、主にプリント
基板に直径が３mmから０．１mmの小径穴を加工する機械
が知られている。プリント基板は例えば、ガラス繊維等
で強化された熱硬化性樹脂製であり、工具は超硬製のド
リルが使用されている。2. Description of the Related Art As a small-diameter drilling machine, there is known a machine for mainly making a small-diameter hole having a diameter of 3 mm to 0.1 mm on a printed circuit board. The printed circuit board is made of, for example, a thermosetting resin reinforced with glass fiber or the like, and a tool made of a cemented carbide is used as the tool.
【０００３】図４、図５を参照して従来の小径ドリル加
工機を説明する。これらの図において、スピンドル１は
数万回転の速度で回転するものであり、Ｙ軸移動用ビー
ム２にＺ軸移動用ヘッド３を介して取付けられている。
このスピンドル１の先端に工具（ドリル）４が装着され
る。一方、プリント基板５はＸ軸移動台６上に、位置決
めピン７で固定される。従い、Ｘ軸移動台６とＹ軸移動
用ビーム２を操作して、プリント基板５上の穴をあける
位置をドリル４の直下に設定することにより、所定位置
に穴をあけることができる。A conventional small-diameter drilling machine will be described with reference to FIGS. 4 and 5. In these figures, the spindle 1 rotates at a speed of tens of thousands of rotations, and is attached to the Y-axis moving beam 2 via the Z-axis moving head 3.
A tool (drill) 4 is attached to the tip of the spindle 1. On the other hand, the printed circuit board 5 is fixed on the X-axis moving table 6 with the positioning pins 7. Therefore, by operating the X-axis moving table 6 and the Y-axis moving beam 2 to set the position for making a hole on the printed circuit board 5 immediately below the drill 4, it is possible to make a hole at a predetermined position.
【０００４】穴を明ける場合、まずスピンドル１の外周
で押え用軸８に組付けられている基板押え９により、Ｘ
軸移動台６上のプリント基板５の穴明け位置周囲を押え
つけ、この状態で加工をする。基板押え９による押えつ
けは、加工初期でのドリル４のプリント基板５への食い
つきを精度良く行うために必要な機能である。なお、１
０はヘッドである。When making a hole, first, the X-axis is moved by the substrate retainer 9 mounted on the retainer shaft 8 on the outer periphery of the spindle 1.
The periphery of the drilling position of the printed circuit board 5 on the axis moving table 6 is pressed down, and processing is performed in this state. The pressing by the board pressing member 9 is a function necessary for accurately biting the drill 4 to the printed circuit board 5 in the initial stage of processing. 1
0 is the head.
【０００５】[0005]
【発明が解決しようとする課題】プリント基板の小径穴
加工では、穴位置精度がその品質を決めるため、通常、
所定の穴加工数でドリル４を交換している。この穴位置
精度は、初期食いつき時の設定穴あけ位置に対する位置
ずれ量（Ｌ1）と、プリント基板５内でのドリル４の曲
り量（Ｌ2 ）と、設定穴あけ位置に対するドリル貫通出
口側での位置ずれ量（Ｌ3 ）で評価される。これら位置
ずれ量（Ｌ1 ，Ｌ3 ）及び曲り量（Ｌ2 ）は、１本のド
リル４で多数の穴を加工してゆく場合、あけた穴数につ
れて大きな値となり、穴位置精度が悪くなる。これは、
ドリル４の刃先が加工によって摩耗することにより生ず
るものと考えられる。In the processing of small-diameter holes on a printed circuit board, the hole position accuracy determines its quality.
The drill 4 is replaced with a predetermined number of holes. This hole position accuracy is determined by the amount of displacement (L 1 ) from the set drilling position at the time of initial biting, the bending amount of the drill 4 in the printed circuit board 5 (L 2 ), and the drill penetration exit side with respect to the set drilling position. The displacement amount (L 3 ) is evaluated. When a large number of holes are machined by one drill 4, these positional deviation amounts (L 1 , L 3 ) and bending amounts (L 2 ) become large as the number of drilled holes increases, resulting in poor hole position accuracy. Become. this is,
It is considered that this is caused by wear of the cutting edge of the drill 4 due to processing.
【０００６】従って、ドリル４の摩耗を少なくすること
ができれば、ドリル１本当りの穴加工数を多くとること
ができ、ドリル交換に要する時間が短縮して生産性を向
上させることができる。Therefore, if the wear of the drill 4 can be reduced, the number of drilled holes per drill can be increased, the time required for exchanging the drill can be shortened, and the productivity can be improved.
【０００７】本発明はドリル摩耗が少ないドリル加工方
法及びドリル加工機を提供することを目的とするもので
ある。It is an object of the present invention to provide a drilling method and a drilling machine with less wear of the drill.
【０００８】[0008]
【課題を解決するための手段】本発明のドリル加工方法
の構成は、プリント基板等の被削板に、振動を与えつつ
ドリル加工をすることを特徴とするものである。The structure of a drilling method of the present invention is characterized in that a drilling work is performed while applying vibration to a work plate such as a printed circuit board.
【０００９】また本発明のドリル加工機の構成は、プリ
ント基板等の被削板に穴をあけるドリル加工機におい
て、ドリルの送り方向と同一方向に移動可能な押え用軸
と、この押え用軸に設けられた被削板押えと、この被削
板押えに設けられた、交流電源により駆動される振動子
とを具備することを特徴とするものである。Further, the structure of the drilling machine of the present invention is, in a drilling machine for making a hole in a work plate such as a printed circuit board, a pressing shaft movable in the same direction as the feed direction of the drill, and the pressing shaft. And a vibrator driven by an AC power source, the vibrator being provided on the work plate retainer.
【００１０】更に、本発明の他のドリル加工機の構成
は、プリント基板等の被削板に穴をあけるドリル加工機
において、ドリルの送り方向と同一方向に移動可能な押
え用軸と、この押え用軸に設けられた被削板押えと、前
記被削板を挟んでドリルと反対側に設けられた、交流電
源により駆動される振動子を有する振動台とを具備する
ことを特徴とするものである。Further, another structure of the drilling machine of the present invention is, in a drilling machine for making a hole in a work plate such as a printed circuit board, a holding shaft movable in the same direction as the feed direction of the drill, It is characterized by comprising: a work plate retainer provided on a retainer shaft; and a vibrating table having an oscillator driven by an AC power source, which is provided on the opposite side of the drill with the work plate sandwiched therebetween. It is a thing.
【００１１】[0011]
【作用】本発明のドリル加工方法によると小径穴等のド
リル加工時に、プリント基板等の被削板とドリル刃先と
の間に、振動数に比例した速度で間隙が繰返し生じる。
この間隙の空気層は付与した振動に合わせて流出、流入
を繰返し、そのためドリル刃先には常に空気の流れが生
じ、この空気流によって切粉の排出がスムーズにでき、
且つドリル刃先の冷却も効果的に行われる。従って、プ
リント基板中のガラス繊維等の切粉が粒状で排出される
ことになり、ドリル刃先の摩耗が従来に比べて大幅に低
減する。According to the drilling method of the present invention, at the time of drilling a small diameter hole or the like, a gap is repeatedly generated between the work plate such as a printed circuit board and the drill blade at a speed proportional to the frequency.
The air layer in this gap repeats outflow and inflow in accordance with the applied vibration, so that a flow of air is constantly generated at the drill cutting edge, and this air flow allows the chips to be discharged smoothly.
Moreover, cooling of the drill cutting edge is also effectively performed. Therefore, chips such as glass fibers in the printed circuit board are discharged in a granular form, and the wear of the drill cutting edge is significantly reduced as compared with the conventional case.
【００１２】本発明のドリル加工機では、被削板押えあ
るいは振動台に設けた振動子を交流電源に接続すると、
被削板押えあるいは振動台が振動するため、被削板押え
が被削板を押えた時に被削板が振動する。この振動状態
でドリル加工を行い、被削板に穴をあける。In the drilling machine of the present invention, when the vibrator provided on the work plate holder or the vibrating table is connected to the AC power source,
Since the work plate retainer or the vibrating table vibrates, the work plate vibrates when the work plate retainer presses the work plate. Drilling is performed in this vibration state to make a hole in the work plate.
【００１３】[0013]
【実施例】以下、本発明の実施例を図１〜図３に基づい
て説明する。Embodiments of the present invention will be described below with reference to FIGS.
【００１４】〔実施例１〕図１、図２により被削板押え
に振動子を組込んだ場合の実施例を説明する。本実施例
はプリント基板用の小径ドリル加工についてのものであ
り、小径ドリル加工機の基板押え９に、２０kHz で振動
する振動子１１を組込み、０．３mm径の小径ドリル加工
を実施した。被削板であるプリント基板５は厚さ１．６
mmのガラスエポキシ製であり、このプリント基板５を２
枚重ねとし、裏うち用の１枚と重ねて穴あけ加工に供し
た。[Embodiment 1] An embodiment in which a vibrator is incorporated in a work plate retainer will be described with reference to FIGS. 1 and 2. This embodiment relates to a small-diameter drilling process for a printed circuit board, and a vibrator 11 vibrating at 20 kHz was incorporated in a substrate holder 9 of a small-diameter drilling machine to carry out a small-diameter drilling process with a diameter of 0.3 mm. The printed board 5, which is a work plate, has a thickness of 1.6.
It is made of mm-mm glass epoxy.
A stack of sheets was prepared, and one sheet for the back side was piled up and subjected to drilling.
【００１５】図１、図２により本実施例の小径ドリル加
工機を説明すると、スピンドル１は数万回転の速度で回
転するものであり、Ｙ軸移動用ビーム２にＺ軸移動用ヘ
ッド３を介して取付けられている。このスピンドル１の
先端にドリル４が装着される。一方、プリント基板５は
Ｘ軸移動台６上に、位置決めピン７で固定される。そし
て、スピンドル１の外周にドリル４の送り方向と同一方
向に移動可能な押え用軸８を組付け、更に、この押え用
軸８の先端に基板押え９を取付け、この基板押え９に振
動子１１を組込んである。振動子１１としては、図２に
示すように圧電体１２と電極１３を重ねて座金１４とボ
ルト１５で締結したものであり、リード線１６により２
０kHz の交流電源１７に接続してある。The small-diameter drilling machine of this embodiment will be described with reference to FIGS. 1 and 2. The spindle 1 rotates at a speed of tens of thousands of rotations, and the Z-axis moving head 3 is attached to the Y-axis moving beam 2. Is installed through. A drill 4 is attached to the tip of the spindle 1. On the other hand, the printed circuit board 5 is fixed on the X-axis moving table 6 with the positioning pins 7. Then, a retainer shaft 8 that is movable in the same direction as the feed direction of the drill 4 is attached to the outer periphery of the spindle 1, and a substrate retainer 9 is attached to the tip of the retainer shaft 8, and a vibrator is attached to the substrate retainer 9. 11 is incorporated. As the vibrator 11, as shown in FIG. 2, a piezoelectric body 12 and an electrode 13 are stacked and fastened with washers 14 and bolts 15.
It is connected to an AC power supply 17 of 0 kHz.
【００１６】小径ドリル加工に際しては、基板押え９で
２枚重ねのプリント基板５をヘッド１０上のＸ軸移動台
６に押付け、振動子１１に交流を印加してプリント基板
５に振動を与えた状態で、ドリル４を送る。ここで、ス
ピンドル回転数を７万rpm とし、ドリル１回転当りの加
工速度を２０μｍ（２０μｍ／rev ）とした。また振動
数は２０kHz 、全振幅は１０μｍとした。これにより、
スピンドル１の送り速度は２３．３mm／sec となり、ド
リル４が２３．３mm進む間に２００００回の振動が付加
することになるので、１振動当りのドリル送り距離は約
１．１７μｍである。従って、１．１７μｍの送り距離
に対して全振幅１０μｍで振動させれば、ドリル４の刃
先部に十分な間隙が生じ、ドリル刃先の摩耗が大幅に低
減する。具体的には、２０kHz 加振では所定位置精度を
下まわるまでに約１２０００穴を加工できたのに対し
て、加振なしでは約８０００穴となり、ドリル寿命が
１．５倍に伸長した。In the small-diameter drilling, the two printed circuit boards 5 are pressed against the X-axis moving base 6 on the head 10 by the substrate pressing 9 and an alternating current is applied to the vibrator 11 to vibrate the printed circuit board 5. Then, send the drill 4. Here, the spindle rotation speed was 70,000 rpm, and the processing speed per one rotation of the drill was 20 μm (20 μm / rev). The frequency was 20 kHz and the total amplitude was 10 μm. This allows
The feed speed of the spindle 1 is 23.3 mm / sec, and 20,000 vibrations are added while the drill 4 moves 23.3 mm, so the drill feed distance per vibration is about 1.17 μm. Therefore, when vibrating with a total amplitude of 10 μm for a feed distance of 1.17 μm, a sufficient gap is created at the cutting edge of the drill 4, and wear of the drill cutting edge is significantly reduced. Specifically, with 20 kHz vibration, about 12,000 holes could be machined before the precision fell below the predetermined position accuracy, while without vibration, there were about 8,000 holes, and the drill life was extended 1.5 times.
【００１７】〔実施例２〕図３により振動子を組込んだ
振動台を用いた場合の実施例を説明する。本実施例もプ
リント基板用の小径ドリル加工についてのものである
が、４０kHz の振動子１１を組込んだ振動台１８をべッ
ド１０上に設け、振動子１１を４０kHz の交流電源１７
にリード線１６で接続した。なお、振動子１１の構造は
図２と同じであり、またスピンドル１、Ｙ軸移動用ビー
ム２、Ｚ軸移動用ヘッド３、ドリル４、プリント基板
５、Ｘ軸移動台６、位置決めピン７、押え用軸８、基板
押え９等については図１と同様である。[Embodiment 2] An embodiment using a vibrating table incorporating a vibrator will be described with reference to FIG. This embodiment is also for small-diameter drilling for a printed circuit board, but a vibrating table 18 incorporating a vibrator 11 of 40 kHz is provided on the bed 10, and the vibrator 11 is an AC power supply 17 of 40 kHz.
To the lead wire 16. The structure of the vibrator 11 is the same as that of FIG. 2, and the spindle 1, the Y-axis moving beam 2, the Z-axis moving head 3, the drill 4, the printed board 5, the X-axis moving table 6, the positioning pin 7, The pressing shaft 8, the substrate pressing member 9 and the like are the same as in FIG.
【００１８】小径ドリル加工に際しては、基板押え９で
２枚重ねのプリント基板５をベッド１０上の振動台１８
に押付け、振動子１１に４０kHz の交流を印加してプリ
ント基板５に振動を与えた状態で、ドリル４を送る。こ
こで、前述の実施例１と同条件で０．３mm径の小径ドリ
ル加工を行ったところ、４０kHz の加振では約１１００
０穴を加工でき、加振なしの約８０００穴に対して大幅
にドリル寿命が伸長した。When processing a small-diameter drill, the two printed circuit boards 5 are stacked on the bed 10 by the substrate holder 9 and the vibrating table 18 is provided.
Then, the drill 4 is fed while the printed circuit board 5 is vibrated by applying an alternating current of 40 kHz to the vibrator 11. Here, when a small-diameter drill having a diameter of 0.3 mm was carried out under the same conditions as in the above-mentioned Example 1, it was about 1100 when the vibration of 40 kHz was applied.
It is possible to machine 0 holes, and the drill life is greatly extended compared to about 8000 holes without vibration.
【００１９】[0019]
【発明の効果】本発明によれば、被削板を振動させなが
らドリル加工を行うので、ドリル刃先に空気流が生じて
これが切粉をスムーズに排出する。従って、プリント基
板の小径ドリル加工等において、ドリル刃先の磨耗が低
減し、ドリル寿命が伸長する。According to the present invention, since the drilling is performed while vibrating the work plate, an air flow is generated at the drill cutting edge, which smoothly discharges the chips. Therefore, in a small-diameter drilling process for a printed circuit board, wear of the drill cutting edge is reduced and the drill life is extended.
【図１】本発明の実施例１に係る装置構造を示す図。FIG. 1 is a diagram showing a device structure according to a first embodiment of the present invention.
【図２】振動子の取付構造例を示す図。FIG. 2 is a diagram showing an example of a vibrator mounting structure.
【図３】本発明の実施例２に係る装置構造を示す図。FIG. 3 is a diagram showing a device structure according to a second embodiment of the present invention.
【図４】従来例の装置構造を示す図。FIG. 4 is a diagram showing a device structure of a conventional example.
【図５】従来例の装置構造を示す図。FIG. 5 is a diagram showing a device structure of a conventional example.
１ スピンドル ２ Ｙ軸移動用ビーム ３ Ｚ軸移動用ヘッド ４ ドリル ５ プリント基板（被削板） ６ Ｘ軸移動台 ７ 位置決めピン ８ 押え用軸 ９ 基板押え（被削板押え） １０ ベッド １１ 振動子 １２ 圧電体 １３ 電極 １４ 座金 １５ ボルト １６ リード線 １７ 交流電源 １８ 振動台 1 Spindle 2 Y-axis moving beam 3 Z-axis moving head 4 Drill 5 Printed circuit board (working plate) 6 X-axis moving table 7 Positioning pin 8 Holding shaft 9 Board pressing (working plate pressing) 10 Bed 11 Transducer 12 Piezoelectric body 13 Electrode 14 Washer 15 Volt 16 Lead wire 17 AC power supply 18 Shaking table
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中村 克己 京都府京都市右京区太秦巽町１番地 三菱 重工業株式会社京都精機製作所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsumi Nakamura No. 1 Uzumasacho, Ukyo-ku, Kyoto City, Kyoto Prefecture Mitsubishi Heavy Industries, Ltd. Kyoto Seiki Co., Ltd.
Claims (3)
つつドリル加工をすることを特徴とするドリル加工方
法。1. A drilling method, characterized in that a work plate such as a printed circuit board is drilled while vibrating.
リル加工機において、ドリルの送り方向と同一方向に移
動可能な押え用軸と、この押え用軸に設けられた被削板
押えと、この被削板押えに設けられた、交流電源により
駆動される振動子とを具備することを特徴とするドリル
加工機。2. In a drilling machine for making a hole in a work plate such as a printed circuit board, a holding shaft movable in the same direction as the drill feed direction and a work plate holding member provided on the holding shaft. A drilling machine, comprising: a vibrator that is provided on the work plate retainer and that is driven by an AC power supply.
リル加工機において、ドリルの送り方向と同一方向に移
動可能な押え用軸と、この押え用軸に設けられた被削板
押えと、前記被削板を挟んでドリルと反対側に設けられ
た、交流電源により駆動される振動子を有する振動台と
を具備することを特徴とするドリル加工機。3. In a drilling machine for making a hole in a work plate such as a printed circuit board, a holding shaft movable in the same direction as the drill feed direction, and a work plate holding member provided on the holding shaft. And a vibrating table provided on the opposite side of the drill with the work plate sandwiched between the vibrating table and a vibrator driven by an AC power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27998591A JPH05116014A (en) | 1991-10-25 | 1991-10-25 | Drilling method and drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27998591A JPH05116014A (en) | 1991-10-25 | 1991-10-25 | Drilling method and drilling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05116014A true JPH05116014A (en) | 1993-05-14 |
Family
ID=17618702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27998591A Withdrawn JPH05116014A (en) | 1991-10-25 | 1991-10-25 | Drilling method and drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05116014A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007098477A (en) * | 2005-09-30 | 2007-04-19 | Toshiba Mach Co Ltd | Machining apparatus and machining method |
| US20100296886A1 (en) * | 2007-10-30 | 2010-11-25 | Dirk Prust | Method for machining workpieces on a cutting machine tool |
| JP2011230270A (en) * | 2010-04-30 | 2011-11-17 | Hitachi Via Mechanics Ltd | Printed circuit board working machine |
-
1991
- 1991-10-25 JP JP27998591A patent/JPH05116014A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007098477A (en) * | 2005-09-30 | 2007-04-19 | Toshiba Mach Co Ltd | Machining apparatus and machining method |
| US20100296886A1 (en) * | 2007-10-30 | 2010-11-25 | Dirk Prust | Method for machining workpieces on a cutting machine tool |
| US8257002B2 (en) * | 2007-10-30 | 2012-09-04 | Chiron-Werke Gmbh & Co. Kg | Method for machining workpieces on a cutting machine tool |
| JP2011230270A (en) * | 2010-04-30 | 2011-11-17 | Hitachi Via Mechanics Ltd | Printed circuit board working machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990107 |