JPH09141509A - Controller for automatic magnetic drilling machine - Google Patents

Controller for automatic magnetic drilling machine

Info

Publication number
JPH09141509A
JPH09141509A JP30609395A JP30609395A JPH09141509A JP H09141509 A JPH09141509 A JP H09141509A JP 30609395 A JP30609395 A JP 30609395A JP 30609395 A JP30609395 A JP 30609395A JP H09141509 A JPH09141509 A JP H09141509A
Authority
JP
Japan
Prior art keywords
amount
electric drill
return
drilling
stepping motor
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.)
Pending
Application number
JP30609395A
Other languages
Japanese (ja)
Inventor
Hajime Kikuchi
一 菊池
Kenji Kataoka
健治 片岡
Eiji Nakayama
栄二 中山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koki Holdings Co Ltd
Original Assignee
Hitachi Koki Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Koki Co Ltd filed Critical Hitachi Koki Co Ltd
Priority to JP30609395A priority Critical patent/JPH09141509A/en
Publication of JPH09141509A publication Critical patent/JPH09141509A/en
Pending legal-status Critical Current

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  • Drilling And Boring (AREA)

Abstract

PROBLEM TO BE SOLVED: To shorten the time of drilling by providing detection means for detecting the number of revolutions of a feed motor and a circuit for setting the amount of return to move up an electric drill to a desired position after drilling. SOLUTION: The amount of return to the position where a stepping motor 4 is stopped rotating when an electric drill is moved up is calculated by adding the setting amount of return detected via a circuit 19 for setting the amount of return to the amount of feed during drilling. The electric drill is moved up by reversely rotating the stepping motor 4. The amount of return is counted by counting the driving pulses of the stepping motor 4. When the amount of return reaches the setting amount of return calculated, a main motor 2 and the stepping motor 4 are stopped to stop the electric drill from rotating and moving up.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、自動磁気ボール盤
の制御装置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an automatic magnetic drilling machine.

【0002】[0002]

【従来の技術】従来の自動磁気ボール盤は、穿孔中にお
いて電気ドリルの電流が一定になるよう送りモータの回
転数を制御しており、電気ドリルの電流が低下すること
によって穿孔終了を検出し、送りモータを逆転させてド
リルスタンドに取付けられているリミットスイッチが、
電気ドリルの上昇に伴い非接触となる位置まで自動戻り
させていた。
2. Description of the Related Art A conventional automatic magnetic drilling machine controls the rotational speed of a feed motor so that the electric current of an electric drill is constant during boring, and detects the end of boring when the electric drill current decreases. The limit switch attached to the drill stand by reversing the feed motor
As the electric drill went up, it automatically returned to the non-contact position.

【0003】[0003]

【発明が解決しようとする課題】従来の自動磁気ボール
盤においては、穿孔終了後、電気ドリルを上昇させる自
動戻り時、ドリルスタンドに取付けられているリミット
スイッチがオフ状態であるため、電気ドリルの上昇を停
止させていた。しかし、短い錐を使用した場合や被穿孔
物が低い位置にある場合においても電気ドリルは一定の
高さまで戻されており、このため穿孔作業に係る時間が
長くなり、結果的に作業効率の低下を招いていた。
In the conventional automatic magnetic drilling machine, when the electric drill is automatically returned after the completion of drilling, the limit switch attached to the drill stand is in the off state, so that the electric drill is raised. Had been stopped. However, even when using a short cone or when the object to be drilled is at a low position, the electric drill is returned to a certain height, which increases the time required for drilling work and consequently reduces work efficiency. Was invited.

【0004】本発明の目的は、電気ドリルの自動戻り停
止位置を穿孔開始位置よりも作業者が設定する戻り量だ
け高い位置に戻すことができることにより、穿孔作業に
係る時間の短縮化を図ることである。
An object of the present invention is to reduce the time required for drilling work by allowing the automatic return stop position of the electric drill to be returned to a position higher than the drilling start position by a return amount set by the operator. Is.

【0005】[0005]

【課題を解決するための手段】上記目的は、送りモータ
の回転数を検出する検出手段と戻り量設定回路を設ける
ことにより、穿孔中の電気ドリルの送り量を算出し、こ
れに作業者の設定した戻り量を加えた値、即ちこの値に
見合った所望の位置まで穿孔終了後に電気ドリルを戻す
ことにより達成される。
The above object is to calculate the feed amount of an electric drill during drilling by providing a detecting means for detecting the number of revolutions of a feed motor and a return amount setting circuit. This is achieved by returning the electric drill to the desired value corresponding to the value including the set amount of return, i.e., the desired value, after completion of drilling.

【0006】[0006]

【発明の実施の形態】本発明になる自動磁気ボール盤の
一実施例を図1乃至図3を用いて説明する。図1は本発
明になる自動磁気ボール盤の制御装置を示す回路図、図
2は本発明になる自動磁気ボール盤の制御手順を示すフ
ローチャート、図3は本発明になる自動磁気ボール盤の
一実施例を示す外観斜視図であり、1はドリルスタン
ド、2は主モータ、3は電気ドリル、4は送りモータで
あるステッピングモータ、5はマグネット、6はセンタ
ピン、7は錐、8は交流電源、9は電源スイッチ、10
はドリルスイッチ、11は整流ブリッジ、12はマグネ
ットコイル、13は半導体制御素子、14はリミットス
イッチ、15はステッピングモータ用直流電源、16は
ステッピングモータ駆動素子、17は点孤回路、18は
電流検出回路、19は戻り量設定回路、20は電源回
路、21はマイクロコンピュータ、22はドライバであ
る。
BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an automatic magnetic drilling machine according to the present invention will be described with reference to FIGS. 1 is a circuit diagram showing a control device for an automatic magnetic drilling machine according to the present invention, FIG. 2 is a flow chart showing a control procedure for the automatic magnetic drilling machine according to the present invention, and FIG. 3 is an embodiment of the automatic magnetic drilling machine according to the present invention. FIG. 1 is an external perspective view showing 1 is a drill stand, 2 is a main motor, 3 is an electric drill, 4 is a stepping motor that is a feed motor, 5 is a magnet, 6 is a center pin, 7 is a cone, 8 is an AC power supply, and 9 is Power switch, 10
Is a drill switch, 11 is a rectifying bridge, 12 is a magnet coil, 13 is a semiconductor control element, 14 is a limit switch, 15 is a DC power supply for a stepping motor, 16 is a stepping motor drive element, 17 is an ignition circuit, and 18 is current detection. A circuit, 19 is a return amount setting circuit, 20 is a power supply circuit, 21 is a microcomputer, and 22 is a driver.

【0007】図2のスタートは、センタピン6と錐7を
電気ドリル3に固定し、電源スイッチ9及びドリルスイ
ッチ10を投入する手順を示しており、電源スイッチ9
が投入されると交流電源8は整流ブリッジ11により整
流され、マグネット5に内蔵されたマグネットコイル1
2に電流を流し被穿孔物を吸着固定する。ドリルスイッ
チ10が投入されると電源回路20が動作し、マイクロ
コンピュータ21が動作を開始する。手順401では、
マイクロコンピュータ21が動作を開始すると主モータ
2の駆動信号を出力ポート211、ドライバ22、点孤
回路17の順で半導体制御素子13に伝え主モータ2を
回転させる。手順402では、主モータ2の無負荷電流
0 を電流検出回路18を介して検出し、マイクロコン
ピュータ21に記憶する。手順403では、作業者が望
む戻り量を戻り量設定回路19を介して検出している。
因みに検出する戻り量は、穿孔開始位置、即ち被穿孔物
表面から電気ドリルの自動戻りが終了した時点での錐の
刃先までの高さであり、この値をマイクロコンピュータ
21に記憶する。手順404では、ステッピングモータ
4を制御して電気ドリル3を下降させる。この動作では
マイクロコンピュータ21内の出力ポート212からス
テッピングモータ駆動素子16に制御信号が伝達され、
ステッピングモータ4が駆動される。手順405では、
主モータ2の電流を電流検出回路18を介して検出し、
主モータ2の電流が先に検出した無負荷電流I0 +2A
以上になれば錐7が被穿孔物に接触し、穿孔を開始した
と判断する。
The start of FIG. 2 shows a procedure in which the center pin 6 and the cone 7 are fixed to the electric drill 3 and the power switch 9 and the drill switch 10 are turned on.
Is turned on, the AC power supply 8 is rectified by the rectification bridge 11, and the magnet coil 1 built in the magnet 5
An electric current is applied to 2 to adsorb and fix the object to be perforated. When the drill switch 10 is turned on, the power supply circuit 20 operates and the microcomputer 21 starts operating. In step 401,
When the microcomputer 21 starts operating, the drive signal of the main motor 2 is transmitted to the semiconductor control element 13 in the order of the output port 211, the driver 22 and the firing circuit 17 to rotate the main motor 2. In step 402, the no-load current I 0 of the main motor 2 is detected via the current detection circuit 18 and stored in the microcomputer 21. In step 403, the return amount desired by the operator is detected via the return amount setting circuit 19.
Incidentally, the return amount to be detected is the drilling start position, that is, the height from the surface of the object to be drilled to the cutting edge of the cone at the time when the automatic return of the electric drill ends, and this value is stored in the microcomputer 21. In step 404, the electric drill 3 is lowered by controlling the stepping motor 4. In this operation, the control signal is transmitted from the output port 212 in the microcomputer 21 to the stepping motor drive element 16,
The stepping motor 4 is driven. In step 405,
The current of the main motor 2 is detected via the current detection circuit 18,
The no-load current I 0 + 2A detected by the current of the main motor 2 first
When the above is reached, it is determined that the cone 7 has come into contact with the object to be drilled and has started drilling.

【0008】穿孔開始を検出すると手順406では、送
りモータの回転数検出手段としてステッピングモータ4
の駆動パルスを数えることにより、送り量のカウントを
開始する。ステッピングモータは駆動パルスが与えられ
るたびにある角度だけ回転するモータであり(本例では
0.9度/パルス)、送り機構部の減速比、ファイナル
ギヤ直径から駆動パルス数が分かれば送り量を計算する
ことができる。手順407では、主モータ2の電流が一
定値Irefとなるように電気ドリル3の送り速度を制
御して穿孔を行う。手順408では、主モータ2の電流
を電流検出回路18を介して検出し、主モータ2の電流
が先に検出した無負荷電流I0 +2A以下になれば穿孔
を終了したと判断する。穿孔終了を検出すると手順40
9では、ステッピングモータ4の回転を停止し、電気ド
リル3の下降を停止する。手順410では、穿孔中に行
っていたステッピングモータ4の駆動パルスのカウント
を終了する。手順411では、先の手順で測定した穿孔
中の送り量に手順403で検出した戻り量設定値を加え
て、電気ドリル3の上昇時のステッピングモータ4の回
転を停止させる位置までの戻り量を演算する。因みに戻
り量の設定値は、本実施例のように外部から設定された
値、またはメモリ装置に記憶された値、或いは所定の計
算式に従って算出されるものでも良い。手順412で
は、ステッピングモータ4を逆回転させ電気ドリル3の
上昇を開始する。手順413では、ステッピングモータ
4の駆動パルスを数えることにより、戻り量のカウント
を開始する。手順414では、戻り量が手順411で算
出した戻り量の設定値まで達したかどうかの確認をす
る。ここで戻り量まで達すれば次の手順に移る。手順4
15では、主モータ2及びステッピングモータ4を停止
させ、電気ドリルの回転及び上昇を停止させている。
When the start of drilling is detected, in step 406, the stepping motor 4 is used as a rotation speed detecting means of the feed motor.
By counting the drive pulses of, the counting of the feed amount is started. The stepping motor is a motor that rotates by a certain angle each time a drive pulse is given (0.9 degrees / pulse in this example). If the number of drive pulses is known from the reduction ratio of the feed mechanism and the final gear diameter, the feed amount can be changed. Can be calculated. In step 407, the feed speed of the electric drill 3 is controlled so that the electric current of the main motor 2 becomes a constant value Iref, and the drilling is performed. In step 408, the current of the main motor 2 is detected via the current detection circuit 18, and if the current of the main motor 2 becomes equal to or less than the previously detected no-load current I 0 + 2A, it is determined that the drilling is completed. When the end of drilling is detected, step 40
At 9, the rotation of the stepping motor 4 is stopped and the lowering of the electric drill 3 is stopped. In step 410, the counting of the drive pulse of the stepping motor 4 which has been performed during the punching is ended. In step 411, the return amount set value detected in step 403 is added to the feed amount during drilling measured in the previous step to determine the return amount to the position where the rotation of the stepping motor 4 when the electric drill 3 is raised is stopped. Calculate Incidentally, the set value of the return amount may be a value set from the outside as in the present embodiment, a value stored in the memory device, or a value calculated according to a predetermined calculation formula. In step 412, the stepping motor 4 is rotated in the reverse direction and the ascending of the electric drill 3 is started. In step 413, the number of drive pulses for the stepping motor 4 is counted to start counting the return amount. In step 414, it is confirmed whether the return amount has reached the set value of the return amount calculated in step 411. If the amount of return is reached here, move to the next step. Step 4
At 15, the main motor 2 and the stepping motor 4 are stopped to stop the rotation and the raising of the electric drill.

【0009】[0009]

【発明の効果】本発明によれば、穿孔終了後の電気ドリ
ルを穿孔開始位置より作業状況に応じて設定した設定量
だけ高い位置まで上昇させることにより、次の穿孔作業
へ素速く移行することができるので、作業効率の向上を
図ることができる。
According to the present invention, the electric drill after the completion of drilling is moved up to a position higher than the drilling start position by a set amount set according to the work situation, so that the next drilling work can be quickly performed. Therefore, the work efficiency can be improved.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 本発明になる自動磁気ボール盤の制御装置を
示す回路図である。
FIG. 1 is a circuit diagram showing a control device for an automatic magnetic drilling machine according to the present invention.

【図2】 本発明になる自動磁気ボール盤の制御手順を
示すフローチャートである。
FIG. 2 is a flowchart showing a control procedure of the automatic magnetic drilling machine according to the present invention.

【図3】 本発明になる自動磁気ボール盤の一実施例を
示す外観斜視図である。
FIG. 3 is an external perspective view showing an embodiment of an automatic magnetic drilling machine according to the present invention.

【符号の説明】[Explanation of symbols]

1はドリルスタンド、3は電気ドリル、4は送りモー
タ、5はマグネット、12はマグネットコイル、18は
電流検出回路、19は戻り量設定回路である。
1 is a drill stand, 3 is an electric drill, 4 is a feed motor, 5 is a magnet, 12 is a magnet coil, 18 is a current detection circuit, and 19 is a return amount setting circuit.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 鉄心にマグネットコイルが巻装されたマ
グネットと、該マグネットの上部に取付けられたドリル
スタンドと、該ドリルスタンドに上下動可能に取付けら
れた電気ドリルと、該電気ドリルを上下動させるための
送りモータとを備えた自動磁気ボール盤において、穿孔
終了後、前記電気ドリルを所望の位置に上昇させるた
め、前記送りモータの回転数を検出する検出手段と戻り
量設定回路とを設けたことを特徴とする自動磁気ボール
盤の制御装置。
1. A magnet having a magnet coil wound around an iron core, a drill stand attached to the upper part of the magnet, an electric drill attached to the drill stand so as to be vertically movable, and a vertical movement of the electric drill. In an automatic magnetic drilling machine equipped with a feed motor for causing the electric drill to rise to a desired position after completion of drilling, a detection means for detecting the rotation speed of the feed motor and a return amount setting circuit are provided. An automatic magnetic drilling machine control device characterized by the above.
JP30609395A 1995-11-24 1995-11-24 Controller for automatic magnetic drilling machine Pending JPH09141509A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30609395A JPH09141509A (en) 1995-11-24 1995-11-24 Controller for automatic magnetic drilling machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30609395A JPH09141509A (en) 1995-11-24 1995-11-24 Controller for automatic magnetic drilling machine

Publications (1)

Publication Number Publication Date
JPH09141509A true JPH09141509A (en) 1997-06-03

Family

ID=17952952

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30609395A Pending JPH09141509A (en) 1995-11-24 1995-11-24 Controller for automatic magnetic drilling machine

Country Status (1)

Country Link
JP (1) JPH09141509A (en)

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