JPS62239880A - Work-piece carriage mechanism in automatic reciprocating superfinishing planer - Google Patents
Work-piece carriage mechanism in automatic reciprocating superfinishing planerInfo
- Publication number
- JPS62239880A JPS62239880A JP8444986A JP8444986A JPS62239880A JP S62239880 A JPS62239880 A JP S62239880A JP 8444986 A JP8444986 A JP 8444986A JP 8444986 A JP8444986 A JP 8444986A JP S62239880 A JPS62239880 A JP S62239880A
- Authority
- JP
- Japan
- Prior art keywords
- material feeding
- distance
- workpiece
- circuit
- commutator 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
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 58
- 230000002457 bidirectional effect Effects 0.000 claims description 15
- 230000002441 reversible effect Effects 0.000 claims description 15
- 239000004065 semiconductor Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000005012 migration Effects 0.000 abstract 1
- 238000013508 migration Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 10
- 230000000630 rising effect Effects 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Milling, Drilling, And Turning Of Wood (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本)明は交流整流子電動機によシ駆動される超仕上鉋盤
の自動往復機構に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an automatic reciprocating mechanism for a superfinishing planer driven by an AC commutator motor.
交流整流子電動機によシ駆動される超仕上鉋盤にて、被
加工材を所定の位置で停止させ、送材方向を反転させる
には、交流!Ifi子電動機の慣性力が大きいため、制
動装置が必要である。In order to stop the workpiece at a predetermined position and reverse the material feeding direction on a super finishing plane machine driven by an AC commutator motor, the AC! Since the inertia of the Ifi motor is large, a braking device is required.
従来は第8図、第9図に示すような構成、及び交流整流
子電動機6の逆起電圧を利用した発電制動回路を有して
いた。第9図において、リレー接点Xは交141整流子
電動機6の運転・停止を、リレー接点Yは正転・逆転を
規制し、リレー接点Yのコモン端子間にはブレーキコイ
ルB、と可変抵抗VRとリレー接点Xのb接点が直列に
接続されていた。この従来方式では、リレー接点Xのa
接点を閉じ、b接点を開くと交流整流子電動機6が正転
し、送材ベルト9が反時計方向に回転し、被加工材11
を送るととKなる。送行方向を終端を検出器12によシ
検出した後、一定時間T経過して、リレー接点Xのa接
点を開き、交流整流子電動機への電源を遮断させ、同時
にリレー接点のb接点が閉じるため、Ate ’)レー
接点Yのb1接点、ブレーキコイル81%可変抵抗VR
,IJレー接点Xのb接点、リレー接点IDb2接点と
閉回路を形成して、制動電流が流れ、交流整流子電動機
6が制動停止する。Conventionally, the motor has a configuration as shown in FIGS. 8 and 9, and a dynamic braking circuit that utilizes the back electromotive voltage of the AC commutator motor 6. In Fig. 9, relay contact X controls the operation/stop of the AC 141 commutator motor 6, relay contact Y controls normal rotation/reverse rotation, and between the common terminal of relay contact Y, there is a brake coil B and a variable resistor VR. and the b contact of relay contact X were connected in series. In this conventional method, a of relay contact
When the contact is closed and the B contact is opened, the AC commutator motor 6 rotates forward, the material conveying belt 9 rotates counterclockwise, and the workpiece 11 is rotated in the counterclockwise direction.
When I send it, it becomes K. After the end of the feed direction is detected by the detector 12, after a certain period of time T has elapsed, the a contact of the relay contact X is opened to cut off the power to the AC commutator motor, and at the same time the b contact of the relay contact is closed. Therefore, Ate ') b1 contact of relay contact Y, brake coil 81% variable resistance VR
, the b contact of the IJ relay contact X, and the relay contact IDb2 contact form a closed circuit, a braking current flows, and the AC commutator motor 6 is braked to a stop.
(l)シかし交流整流子電動機6においては、電源電圧
変動により、又被加工材11の形状によシ大きな負荷変
動が生じるため、送材速度が大幅に変化する。このため
、被加工材11の終端を検出して、一定時間T後に交流
整流子電動機6の電源を遮断するまでに強制送材される
距離Llが大きくばらつく。更に発電制動により、送材
を停止させているため、電源電圧の変動、送材負荷変動
、ブレーキコイルの温度上昇による抵抗値変動、整流子
と!!l!流ブラタブ2フの状態及び温度上昇による摺
動抵抗値変動又IA発的に生じる制@遅れ等の影響によ
り、制動力が大きくばらつき、被加工材11の制動距離
L2を安定に保つことができない。上記強制送材される
距fiL1と制動距離L2の和のばらつきを補正するた
め、可変抵抗VRの抵抗値を調整し、制動電流を変え、
制動力を加減する機構としているが、前述の不確実な変
動要因が多いため、この方式では被加工材11を所定の
位置で確実に反転させることが不可能であり、自動往復
動作の信頼性を確保できないという問題があった。(l) In the AC commutator motor 6, large load fluctuations occur due to power supply voltage fluctuations and depending on the shape of the workpiece 11, so the material feeding speed changes significantly. For this reason, the distance Ll over which the workpiece is forcibly fed from when the end of the workpiece 11 is detected to when the AC commutator motor 6 is powered off after a certain period of time T varies widely. Furthermore, since material feeding is stopped by dynamic braking, fluctuations in power supply voltage, material feeding load fluctuations, resistance value fluctuations due to temperature rise of the brake coil, and commutator! ! l! Due to the sliding resistance value fluctuation due to the state of flow bra tab 2 and temperature rise, and the influence of IA-induced braking @ delay, etc., the braking force varies greatly, making it impossible to maintain a stable braking distance L2 of the workpiece 11. . In order to correct the variation in the sum of the forced material feeding distance fiL1 and the braking distance L2, the resistance value of the variable resistor VR is adjusted, the braking current is changed,
Although this method uses a mechanism to adjust the braking force, due to the many uncertain fluctuation factors mentioned above, it is impossible to reliably reverse the workpiece 11 at a predetermined position with this method, and the reliability of automatic reciprocating operation is affected. There was a problem that it was not possible to secure the
(2)更に、交流整流子電動機6を起動、停止、制動を
頻繁に繰り返すため、交流整流子電動機6の温度上昇が
激しく、この温度上昇のため整流ブラシの摩耗が早く、
寿命が短いという問題があった。(2) Furthermore, since the AC commutator motor 6 is repeatedly started, stopped, and braked, the temperature of the AC commutator motor 6 increases rapidly, and this temperature increase causes the commutator brushes to wear out quickly.
The problem was that it had a short lifespan.
本発明の目的h1前記の欠点をなくシ、交流整流子電動
機を有した超仕上鉋盤にて、(1)被加工材の終端を送
材路の所定の位置で制動停止させ、確実な反転動作を行
い自動往復機構の信頼性を向上させることである。 (
2)交流整流子電動機の温度上昇値を低減し、整流ブラ
シの寿命を向上させることである。(3)制動装置の温
度上外を軽減し、寿命を向上させることである。Objective of the present invention h1 To eliminate the above-mentioned drawbacks, in a super finishing planer equipped with an AC commutator motor, (1) the end of the workpiece is stopped by braking at a predetermined position on the material feeding path, and reversal is ensured; The objective is to improve the reliability of automatic reciprocating mechanisms. (
2) To reduce the temperature rise value of the AC commutator motor and improve the life of the commutator brush. (3) To reduce the temperature fluctuations of the braking device and improve its lifespan.
本発明は、(1)電源電圧変動、送材負荷変動により送
材速度が大幅に変化しても被加工材の送行方向終端の位
置を精度良く把握するため、被加工材の送行距離を計数
して、自動往復送材を行わせる。The present invention has the following features: (1) Even if the material feeding speed changes significantly due to power supply voltage fluctuations and material feeding load fluctuations, the feeding distance of the workpiece is counted in order to accurately determine the position of the end of the material in the feeding direction. Then, automatic reciprocating material feeding is performed.
(2)交流整流子電動機の温度上昇を低減するため、ソ
フトスタート機構を設ける。(3)制動装置として、電
源電圧変動、送材負荷変動の影響の少ない電磁ブレーキ
を使用し、且つ電磁ブレーキの寿命を向上させるため、
交流電動機の1!源を遮断した後、慣性により被加工材
を所定の距離送行させ、慣性力を軽減させた時点で電磁
ブレーキを駆動させる。(2) A soft start mechanism is provided to reduce the temperature rise of the AC commutator motor. (3) In order to use an electromagnetic brake that is less affected by power supply voltage fluctuations and material feeding load fluctuations as a braking device, and to improve the life of the electromagnetic brake,
AC motor 1! After the source is shut off, the workpiece is transported a predetermined distance by inertia, and when the inertial force is reduced, the electromagnetic brake is activated.
本発明の実施例を第1図の自動往復超仕上鉋盤の概略構
成を示す正面図によシ説明する。ペース1の上部に鉋刃
10を有するテーブル2を設け、鉋刃10の上方には一
対のコラム3で支持されネジ軸4、及び図示していない
昇降ノ・ンドルや昇降用電動機によシ昇降可能にヘッド
5を配設している。ヘッド5には交流整流子電動機6(
以下Mと略記する。)から連動される駆動ローラ7と従
動ローラ8と両ローラ間に送材ベルト9が取り付けられ
ている。テーブル2上には被加工材11の送行方向終端
を検出する検出器12.13が配設されている。第2図
はヘッド5の立面図で、送材駆動系を示す図であり、M
の出力軸からベルト等の減速手段により動力伝達され、
更に減速機14を介して駆動ローラ7を駆動して、送材
ベルト9を回転せしめる。減速機14の入力軸には電磁
ブレーキ15が組み込まれ、送材中適宜動作させて、送
材駆動系に制動をかける構造としている。第3図は被加
工材11の送行距離に応じてパルスを発するパルス発生
手段を示す図であり、駆動ローラ7の軸7aの適所に固
着したエンコーダ16とエンコーダ16のスリットの有
無を検出する検出器17がヘッド5の適所に設けている
。An embodiment of the present invention will be explained with reference to a front view showing a schematic configuration of an automatic reciprocating super-finishing planer shown in FIG. A table 2 having a planer blade 10 is provided above the pace 1, and above the planer blade 10 is supported by a pair of columns 3 and a screw shaft 4, and is lifted and lowered by a lifting knob (not shown) or a lifting electric motor. The head 5 is arranged as possible. The head 5 is equipped with an AC commutator motor 6 (
Hereinafter, it will be abbreviated as M. ) A driving roller 7 and a driven roller 8 are interlocked with each other, and a material conveying belt 9 is attached between both rollers. Detectors 12 and 13 are arranged on the table 2 to detect the end of the workpiece 11 in the feeding direction. FIG. 2 is an elevational view of the head 5, showing the material feeding drive system, and M
Power is transmitted from the output shaft of the
Furthermore, the drive roller 7 is driven via the speed reducer 14 to rotate the material conveying belt 9. An electromagnetic brake 15 is incorporated in the input shaft of the speed reducer 14, and is operated appropriately during material feeding to apply braking to the material feeding drive system. FIG. 3 is a diagram showing a pulse generating means that emits pulses in accordance with the feeding distance of the workpiece 11, and is a diagram showing an encoder 16 fixed to a proper position on the shaft 7a of the drive roller 7 and a detection device for detecting the presence or absence of a slit in the encoder 16. A container 17 is provided at a suitable position on the head 5.
第4図は本発明の具体例を示すブロック回路図であり、
以下動作について説明する。FIG. 4 is a block circuit diagram showing a specific example of the present invention,
The operation will be explained below.
電源ライン71%/1とMのS、コイル、Atコイルと
リレー接点18a、19m、及び双方向性半導体素子2
0とを直列に接続し、リレー接点18a。Power line 71%/1 and M S, coil, At coil and relay contacts 18a, 19m, and bidirectional semiconductor element 2
0 is connected in series with the relay contact 18a.
19mによりArコイルを入れ換え、正転・逆転可能に
電気的接続をしている。更に電源ライン/Iより、リレ
ー接点18al、19alを並列接続してトリガ回路2
1に接続し、トリガ回路21の内部回路を介して双方向
性半導体素子の’L 、T曹、G端子に接続されている
。従ってリレー接点1111&、18alを閉じること
により、トリガ回路21から双方向性半導体素子20の
G端子、T。The Ar coil is replaced by 19m, and the electrical connection is made to allow forward and reverse rotation. Furthermore, from the power line /I, relay contacts 18al and 19al are connected in parallel to form trigger circuit 2.
1, and is connected to the 'L', T', and G terminals of the bidirectional semiconductor element through the internal circuit of the trigger circuit 21. Therefore, by closing the relay contacts 1111&, 18al, the G and T terminals of the bidirectional semiconductor element 20 are removed from the trigger circuit 21.
端子に負のトリガパルスを印加して、双方向性半導体素
子20のT、端子、T、端子間を導通させ、Mを正転駆
動させる。同様にリレー接点19a119a1を閉じる
ことKより、Mを逆転駆動させる。尚、Mを正転・逆転
起動する際に、第5図に示す如くMの起!l!l]′w
IL流を抑制するため、トリガ回路21から発する負の
トリガパルスの位相角を電源電圧の周期に対して、一定
時間t3の開栓々に進めて行き、双方向性半導体素子の
導通角を大きくするような、ソフトスタート機構を有し
ている。By applying a negative trigger pulse to the terminal, conduction is established between the T terminal and the T terminal of the bidirectional semiconductor element 20, and M is driven to rotate in the normal direction. Similarly, by closing the relay contact 19a119a1, K causes M to be driven in the reverse direction. In addition, when starting M in forward or reverse rotation, as shown in FIG. l! l]'w
In order to suppress the IL flow, the phase angle of the negative trigger pulse emitted from the trigger circuit 21 is advanced with respect to the cycle of the power supply voltage for a certain period of time t3, and the conduction angle of the bidirectional semiconductor element is increased. It has a soft start mechanism.
(尚、ソフトスタート機構は一般的であり詳細は省略す
る。)
検出器12.13は被加工材11を検出していないとき
、論理「H」、検出しているとき論理「L」の信号を出
力する。フリップフロップ22.23はそれぞれ終端検
出器12.13の出力信号中の論理「L」から「H」の
立上りで、そのQ出力を論理rLJから「H」に反転さ
せる回路である。フリップフロップ22は送材ベルト9
が正転中(図1において時計方向)、即ちアンドゲート
31が論理rHJで、オアゲート24を介した論理「H
」の信号をR端子に入力されているとき動作可能となる
。フリップフロップ23は送材ベルト9が逆転中(図1
(<おいて反時計方向)、即ちアンドゲート32が論理
「II Jで、アンドゲート25を介した論理「H」の
信号をR端子に入力されているとき動作可能と々る。(Note that the soft start mechanism is common and details are omitted.) When the detectors 12 and 13 do not detect the workpiece 11, the signal is logic "H", and when it is detected, the signal is logic "L". Output. Flip-flops 22 and 23 are circuits that invert their Q outputs from logic rLJ to "H" at the rise of logic "L" to "H" in the output signals of termination detectors 12, 13, respectively. The flip-flop 22 is connected to the material conveying belt 9
is rotating in the normal direction (clockwise in FIG. 1), that is, the AND gate 31 is at logic rHJ and the logic "H
” is input to the R terminal, operation becomes possible. The flip-flop 23 indicates that the material conveying belt 9 is rotating in reverse (Fig.
(counterclockwise in <), that is, when the AND gate 32 is at the logic "II J" and the logic "H" signal is input to the R terminal via the AND gate 25, it becomes operable.
距離計数回路27は、フリップフロップ22.23のQ
出力が論理「I(」の信号をオアゲート26を介して受
け、検出器17からのパルス信号を計数し、予め設定回
路28に設定された値n1まで計数したとき論理「H」
の単パルスを出力する。フリップフロップ29け距離計
数回路27の単パルス金堂けて、そのQ出力を論理「L
」からrHJに、そのQ出力を論理「H」からrLJに
反転する。このQ出力の論理rLJにより、アンドゲー
ト31.32の出力を論理rLJにして、リレーコイル
18.19の励磁を断つ。距離計数回路33は7リツプ
フロツプ29のQ出力の論理「H」を受けて検出器17
からのパルス信号を計数し、予め設定回路34に設定さ
れた値n2まで計数したとき論理rHJの単パルスを出
力する。The distance counting circuit 27 is connected to the Q of the flip-flops 22 and 23.
A signal whose output is logic "I(") is received via the OR gate 26, the pulse signal from the detector 17 is counted, and when the count reaches the value n1 set in advance in the setting circuit 28, the logic becomes "H".
Outputs a single pulse of The single pulse circuit of the distance counting circuit 27 with 29 flip-flops outputs its Q output as logic "L".
” to rHJ, and inverts its Q output from logic “H” to rLJ. According to the logic rLJ of this Q output, the output of the AND gates 31 and 32 becomes the logic rLJ, and the excitation of the relay coils 18 and 19 is cut off. The distance counting circuit 33 receives the logic "H" from the Q output of the 7-lip flop 29 and outputs the signal to the detector 17.
It counts the pulse signals from , and outputs a single pulse of logic rHJ when the count reaches a value n2 set in advance in the setting circuit 34.
リトリガブルバイブレータ36はフリップフロップ29
のQ出力が論理rHJのとき動作可能となり、検出器1
7からのパルス信号の立上シ信号で、予め設定した時間
t1間出力を論理rHJにし、この論理「H」の状態は
検出器17のパルス信号中任意のn個目のパルスの立上
りから、n+1個のパルスの立上シまでの周期幅tが1
) 1.となったとき、n個目のパルスの立上シから
t0間統御て、論理「L」に反転する。従って、距離計
数回路33にて検出器17からのパルス信号をn2個計
数する以前に、パルス間の周期幅tが1)1.となった
とき、即ち送材負荷が非常に大きく、n2個壕で計数で
きない場合には、リトリガブルバイブレータ36の信号
によシ、又それ以外の場合は距離計数回路33からの論
理rl(Jの単パルス信号をインバータゲート35によ
り反転して、アンドゲート37の出力から論理rHJか
ら「L」への立下シ信号を出力する。The retriggerable vibrator 36 is a flip-flop 29
It becomes operational when the Q output of is logic rHJ, and detector 1
With the rising edge signal of the pulse signal from 7, the output is set to logic rHJ for a preset time t1, and this logic "H" state starts from the rising edge of any n-th pulse in the pulse signal of the detector 17. The period width t up to the rising edge of n+1 pulses is 1
) 1. When this happens, the logic is inverted to "L" during the period t0 from the rising edge of the n-th pulse. Therefore, before the distance counting circuit 33 counts n2 pulse signals from the detector 17, the period width t between the pulses is 1) 1. When this happens, that is, when the material feeding load is so large that it cannot be counted in n2 trenches, the signal from the retriggerable vibrator 36 is used, and in other cases, the logic rl ( The single pulse signal of J is inverted by the inverter gate 35, and a falling signal from logic rHJ to "L" is output from the output of the AND gate 37.
このアンドゲート37の立下夛信号によりタイマ38を
動作させ、予め設定した時間t1の間、論理rHJ信号
を出力し、リレーコイル43を励磁しリレー接点43a
を閉じ、電磁ブレーキ15を励磁して、送材駆動系に制
動をかけて、停止させる。時間t1経過後、タイマ39
を動作させ、予め設定した時間t2後輪理「L」の単パ
ルスを発して、フリップフロップ29をリセットし、そ
のQ出力を論理rHJからrLJに、Q出力を論理rL
JからrHJ K反転させる。The timer 38 is operated by the falling signal of the AND gate 37, and a logic rHJ signal is output for a preset time t1, and the relay coil 43 is energized to contact the relay contact 43a.
is closed, the electromagnetic brake 15 is energized, and the material feeding drive system is braked and stopped. After time t1 has elapsed, timer 39
After a preset time t2, a single pulse of "L" is issued to reset the flip-flop 29, changing its Q output from logic rHJ to rLJ, and changing its Q output to logic rL.
J to rHJ K invert.
フリップフロップ30のQ出力が論理rHJで7リツプ
フロツプ29のQ出力が論理「H」のときはアンドゲー
ト31が論理rHJとなシリレーコイル18が励磁して
、リレー接点181,18alが閉じ、Mは正転となる
。7リツプフロツプ30のQ出力が論理「H」で7リツ
プフロツプ29のQ出力が論理rHJのときは、アンド
ゲート・32が論理rHJとなり、リレーコイル19が
励磁して、リレー接点191N 19alが閉じ、M
は逆転となる。フリップフロップ30は1フリツプフロ
ツプ29のQ出力の論理「L」からrI(Jへの立上り
信号を受ける毎に、そのQ出力、Q出力を反転して、M
の回転方向を指示する回路となっている。When the Q output of the flip-flop 30 is logic rHJ and the Q output of the flip-flop 29 is logic "H", the AND gate 31 is logic rHJ, the relay coil 18 is excited, the relay contacts 181 and 18al are closed, and M is positive. It becomes a turn. When the Q output of the 7 lip flop 30 is logic "H" and the Q output of the 7 lip flop 29 is logic rHJ, the AND gate 32 becomes the logic rHJ, the relay coil 19 is energized, the relay contacts 191N and 19al are closed, and the M
is reversed. Each time the flip-flop 30 receives a rising signal from the logic "L" of the Q output of the flip-flop 29 to rI (J), the flip-flop 30 inverts the Q output and the Q output,
This is a circuit that indicates the direction of rotation.
従って、送材ベルト9が正転中に被加工材11を送材路
へ送り込むと、被加工材11により検出2712が動作
して論理「H」からrLJになる。Therefore, when the workpiece 11 is fed into the workpiece path while the conveyance belt 9 rotates normally, the detection 2712 is activated by the workpiece 11 and the logic changes from "H" to rLJ.
被加工材11が送行され、その終端が検出器12を通過
すると、論理「L」からrHJ K反転する。When the workpiece 11 is fed and its terminal end passes the detector 12, rHJK is reversed from logic "L".
この立上り信号により、フリップフロップ22がセット
され、そのQ出力が論理rHJとなシ、検出器17から
送行距離L1に相当するn1個のパルス信号を距離計数
回路27で計数した時点で論理rHJの単パルスを発し
て、フリップ70ツブ29をセットし、そのQ出力、Q
出力を反転させ、アンドゲート31の出力を論理「L」
にしてリレーコイル18の励磁を断ち、リレー接点18
&、18alを開いて、Mへの電源を遮断する。Mへの
電源を遮断した後も慣性により被加工材11が送行され
、この慣性送行中に1検出器17から、送行圧111L
2に相当するn2個のパルス信号を距離計数回路33で
計数した時点で論理rHJの単パルスを発して、インバ
ータ35、アンドゲート37を介して、タイマ38を動
作させ、時間1゜の間リレーコイル43を励磁して、リ
レー接点43aを閉じ、電磁ブレーキ15を励磁して、
送材駆動系に制動かけて、被加工材11を所定の位置で
停止させる。The flip-flop 22 is set by this rising signal, and its Q output becomes the logic rHJ.When the distance counting circuit 27 counts n1 pulse signals corresponding to the feeding distance L1 from the detector 17, the logic rHJ is set. Emit a single pulse, set flip 70 knob 29, and calculate its Q output, Q
Invert the output and set the output of AND gate 31 to logic "L"
to cut off the excitation of the relay coil 18 and close the relay contact 18.
&, open 18al and cut off the power to M. Even after the power to M is cut off, the workpiece 11 is fed due to inertia, and during this inertial feeding, the feed pressure 111L is detected from the first detector 17.
When the distance counting circuit 33 counts n2 pulse signals corresponding to 2, a logical rHJ single pulse is generated, the timer 38 is operated via the inverter 35 and the AND gate 37, and the relay is activated for a time of 1°. The coil 43 is energized, the relay contact 43a is closed, the electromagnetic brake 15 is energized,
Braking is applied to the material feeding drive system to stop the workpiece 11 at a predetermined position.
即ち、送行距離L2送行中に、送材駆動系の慣性エネル
ギーを減じた後に制動停止させ、電磁ブレーキ15の寿
命改善を図ることができる。時間t、の後、リレーコイ
ル43の励磁を断ち、リレー接点43&を開いて、電磁
ブレーキの動作を解除し、タイマ39を動作して時間1
.後単パルスを発して、フリップ70ツブ29をリセッ
トしそのQ出力を論理「L」、Q出力を論J4Q「l(
Jとし、ア/ドゲート32の出力を論理rHJ Kする
。この論理「[■」によシ、リレーコイル19が励磁さ
れ、リレー接点19a% 19alが閉じて、前述の
如く、双方向性半導体素子の導通角を時間t、の間、徐
々に大きくして、起動電流を抑制しなからMを逆転起動
させ、送材ベルト9を逆転して、被加工材を逆送性させ
る。送材ベルト9が逆転中に被加工材11の終端が検出
器13を通過すると、その出力がVFu r L Jか
らrHJに反転する。この立上シ信号によりフリップフ
ロップ23がセットされ、そのQ出力が論理rHJとな
り、以下送材ベルト9が正転中の場合と同様の動作を繰
り返し、被加工材11が自動往復することになる。That is, during the feeding distance L2, the inertia energy of the material feeding drive system is reduced and then the material is braked to a stop, thereby improving the life of the electromagnetic brake 15. After time t, the relay coil 43 is de-energized, the relay contacts 43 & are opened, the electromagnetic brake is released, and the timer 39 is activated for time 1.
.. After that, a single pulse is emitted to reset the flip 70 knob 29, and the Q output is set to logic "L", and the Q output is set to logic J4Q "l(
J, and the output of the add/do gate 32 is a logic rHJK. According to this logic "[■"], the relay coil 19 is energized, the relay contacts 19a% 19al are closed, and the conduction angle of the bidirectional semiconductor element is gradually increased for a time t, as described above. , M is started in reverse without suppressing the starting current, the material feeding belt 9 is reversed, and the workpiece is fed in reverse. When the end of the workpiece 11 passes the detector 13 while the material conveying belt 9 is rotating in reverse, its output is reversed from VFurLJ to rHJ. The flip-flop 23 is set by this start-up signal, and its Q output becomes logic rHJ. From then on, the same operation as when the material conveying belt 9 is rotating normally is repeated, and the workpiece 11 automatically reciprocates. .
尚、被加工材11の切削を終了し、手前側(第1図にお
いて右側)に引き出す場合は、材料引出回路40中の抵
抗RでプルアップされたスイッチSWを開くことにより
、送材ベルト9逆転中アンドゲート42の出力を論理[
HJとし、インバータゲート41を介してアンドゲート
25の出力を論理「L」とし、フリップフロップ23を
リセット状態にし、逆にオアゲート24の出力を論理r
f(Jにし、フリップフロップ22を動作可能にし、検
出器12により、被加工材11の終端を検出させ、被加
工材11が手前側に引き出た後、送材ベルトを逆転から
正転に戻すようにしている。In addition, when finishing the cutting of the workpiece 11 and pulling it out to the front side (right side in FIG. 1), the material feeding belt 9 During reversal, the output of the AND gate 42 is set to logic [
HJ, the output of the AND gate 25 is set to logic "L" via the inverter gate 41, the flip-flop 23 is set to the reset state, and conversely, the output of the OR gate 24 is set to the logic "L".
f(J), enable the flip-flop 22, make the detector 12 detect the end of the workpiece 11, and after the workpiece 11 is pulled out to the front side, change the feed belt from reverse rotation to normal rotation. I'm trying to get it back.
第4図中、■、は適尚な回路電源であシ、v+1は、電
磁ブレーキ用の電源を示すものである。In FIG. 4, ■ indicates a suitable circuit power supply, and v+1 indicates a power supply for the electromagnetic brake.
第6図に被加工材11の終端を検出器12、又は13で
検出した後のMの回転数(N)と被加工材11の送行距
離(L)の関係図を示す。図中Ll、L2けそれぞれ検
出器17からのパルス信号のn1個、n2個の計数値に
相当する送行距離で、L3は、制動中に被加工材11が
送行する距離である。図中(11と(2)に示す如く、
電源電圧変動、送材負荷変動によって生ずるMの回転速
度(N)が異なる場合においても、被加工材11が停止
するまでの送行距離の和(L1+L2+L3)の差は非
常に小さく、はぼ所定の位置で被加工材11を停止させ
ることができ、安定した、信頼性の高い自動往復!Φ作
が可能となる。FIG. 6 shows a relationship diagram between the number of revolutions (N) of M and the distance (L) in which the workpiece 11 is fed after the end of the workpiece 11 is detected by the detector 12 or 13. In the figure, L1 and L2 are the traveling distances corresponding to n1 and n2 counts of pulse signals from the detector 17, respectively, and L3 is the distance that the workpiece 11 travels during braking. As shown in (11 and (2)) in the figure,
Even when the rotational speed (N) of M differs due to power supply voltage fluctuations and material feeding load fluctuations, the difference in the sum of the feeding distances (L1+L2+L3) until the workpiece 11 stops is very small, and it is almost impossible to reach the specified speed. The workpiece 11 can be stopped at any position, resulting in stable and reliable automatic reciprocation! Φ production becomes possible.
これに対し、第7図に時限動作によ、り制御した場合を
示す。第6図の(11のLl、L2の送行距離に相当す
る時間を仮にTI、T2とすると、電源電圧変動、送材
負荷変動によりMの回転速度(N)が低下しく2)とな
った場合、時間TI、72間に送行する距離はそれぞれ
L 1’(L 1’<L 1) 、L 2’(L2’<
Ll)となり、更に制動時の送行距離がL 3’ (L
3’< L 3)となり、被加工材11が停止する壕
での送行距離の和の差異ΔL′は非常に大きくなるため
、被加工材11が自動往復中に送材路から抜は出たり、
又は鉋刃lOによる切削残しが生じたりして、自動往復
の信頼性に欠ける。従って交流整流子電動機により駆動
される超仕上鉋盤においては、本発明の送材機構が有効
となるものである。On the other hand, FIG. 7 shows a case where the control is performed using a timed operation. Assuming that the times corresponding to the feeding distances of Ll and L2 in Figure 6 (11) are TI and T2, the rotational speed (N) of M decreases due to power supply voltage fluctuations and material feeding load fluctuations and becomes 2). , time TI, and the distance traveled during 72 are L 1' (L 1'<L 1) and L 2'(L2'<
Ll), and furthermore, the traveling distance during braking becomes L3' (L
3'< L 3), and the difference ΔL' in the sum of the feeding distances at the trench where the workpiece 11 stops becomes very large, so the workpiece 11 may be pulled out of the material feeding path during automatic reciprocation. ,
Alternatively, the plane blade lO may leave cutting residue, resulting in a lack of reliability in automatic reciprocation. Therefore, the material feeding mechanism of the present invention is effective in a superfinishing planer driven by an AC commutator motor.
本発明によれば、交流整流子電動機6によシ駆動される
自動往復超仕上鉋盤において、被加工材11の送行距離
を計数して、交流整流子電動機6の電源を遮断し、且つ
慣性送行させた後、電磁ブレーキ15を駆動して送材駆
動系に制動をかけ、被加工材11を停止させるようにし
たので、電源電圧変動や送材負荷変動によシ送材速度が
大幅に変動しても、被加工材11の終端を送材路の所定
の位置に、精度良く制動停止させることができ、確実な
反転動作を行い、自動往復動作の信頼性を向上すること
ができる。According to the present invention, in an automatic reciprocating superfinishing planer driven by an AC commutator motor 6, the feeding distance of the workpiece 11 is counted, the power supply of the AC commutator motor 6 is cut off, and the inertia After feeding, the electromagnetic brake 15 is actuated to brake the material feeding drive system and stop the workpiece 11, so that the material feeding speed can be significantly reduced due to power supply voltage fluctuations or material feeding load fluctuations. Even if the workpiece 11 fluctuates, the end of the workpiece 11 can be accurately braked and stopped at a predetermined position on the material feeding path, a reliable reversal operation can be performed, and the reliability of the automatic reciprocating operation can be improved.
また、ソフトスタート機構を有するトリガ回路21によ
り、双方向性半導体素子20の導通角を徐々に大きくし
て、起@電流を抑制し、交流整流子電動機6を起動させ
るようにしたので、頻繁に起動・停止を繰り返しても、
交流V、流子電動機6の温度上昇値を低減でき、且つ電
流ブラシの寿命を大幅に向上でき、更に正転・逆転切換
用リレーの接点寿命も大幅に向上できる。In addition, the trigger circuit 21 having a soft start mechanism gradually increases the conduction angle of the bidirectional semiconductor element 20 to suppress the generated current and start the AC commutator motor 6, so that the alternating current commutator motor 6 is started frequently. Even if you repeatedly start and stop,
The temperature rise value of the AC V and flow motor 6 can be reduced, the life of the current brush can be greatly improved, and the life of the contacts of the forward/reverse rotation switching relay can also be greatly improved.
さらに、慣性送行させて、送材駆動系の慣性エネルギー
を減じてから、電磁ブレーキ15を駆動する、しうにし
たので、電磁ブレーキの温度上昇値を低減し、寿命を向
上させることができる。Further, since the electromagnetic brake 15 is driven after inertial feeding and reducing the inertial energy of the material feeding drive system, the temperature rise value of the electromagnetic brake can be reduced and the service life can be improved.
以上の如く安定な信頼性の高い、経済的な送材機構を伊
供できる。As described above, a stable, highly reliable, and economical material feeding mechanism can be provided.
第1図は超仕上鉋盤の概略構成を示す正面図、第2図は
ヘッドの立面図、第3図は送材距離を検出する検出機構
部、第4図はブロック回路図、第5図は起動電流の説明
図、第6図、第7図は交流整流予電@機の回転速度と被
加工材の送行距離の関係図、第8図〜第10図は従来技
術になる超仕上鉋盤を示す正面図、回路図、タイムチャ
ート図である。
図において、2はテーブル、5はヘッド、6は交流整流
子電動機、7は駆動ローラ、8は従動ローラ、9は送材
ベルト、10は鉋刃、11は被加工材、12.13.1
7は検出器、14け減速機、15は電磁ブレーキ、16
はエンコーダ、18.19.43はリレーコイル、20
は双方向性半導体素子、21けトリガ回路、22.23
.29.30けフリップフロップ、24.26はオアゲ
ート、25.31132.37.42はアンドゲート、
27.33は距離計数回路、28.34は設定回路、3
5.41はインバータゲート、36はリトリガブルバイ
ブレータ、38.39はタイマ、40は材料引出回路、
18a、18al、19a119al、43aXXXY
はリレー接点、Rは抵抗、RVは可変抵抗である。
特許出願人の名称 株式会社日立工機原町+/[D
中2図
第3I¥1
中4図
2t)6図
+7(2)
運行踵姐(L)
中8(21
中fo国
制動電5先Fig. 1 is a front view showing the schematic configuration of the super finishing planer, Fig. 2 is an elevational view of the head, Fig. 3 is the detection mechanism for detecting the material feeding distance, Fig. 4 is a block circuit diagram, and Fig. 5 is a block diagram. The figure is an explanatory diagram of the starting current, Figures 6 and 7 are relationship diagrams of the rotational speed of the AC rectified pre-voltage machine and the feeding distance of the workpiece, and Figures 8 to 10 are super-finishing methods using conventional technology. They are a front view, a circuit diagram, and a time chart diagram showing a plane board. In the figure, 2 is a table, 5 is a head, 6 is an AC commutator motor, 7 is a drive roller, 8 is a driven roller, 9 is a material feeding belt, 10 is a plane blade, 11 is a workpiece, 12.13.1
7 is a detector, 14-digit reducer, 15 is an electromagnetic brake, 16
is the encoder, 18.19.43 is the relay coil, 20
is a bidirectional semiconductor device, a 21-digit trigger circuit, 22.23
.. 29.30 flip-flop, 24.26 is or gate, 25.31132.37.42 is and gate,
27.33 is a distance counting circuit, 28.34 is a setting circuit, 3
5.41 is an inverter gate, 36 is a retriggerable vibrator, 38.39 is a timer, 40 is a material drawing circuit,
18a, 18al, 19a119al, 43aXXXY
is a relay contact, R is a resistance, and RV is a variable resistance. Name of patent applicant Hitachi Koki Haramachi Co., Ltd.
Claims (1)
ルトに対向した鉋刃により送材路を形成し、送材ベルト
により被加工材を往復動して、鉋刃により切削を行う超
仕上鉋盤において、可逆電動機に交流整流子電動機を用
い、交流整流子電動機のS_iコイル、又はA_rコイ
ルの一方の接続を入れ換えて正転、逆転駆動を制御する
回転方向切換回路と、交流整流子電動機の運転・停止を
制御する双方向性半導体素子、及び双方向性半導体素子
をトリガ制御するトリガ回路を設け、交流整流子電動機
と回転方向切換回路と双方向性半導体素子を直列に接続
した回路構成とし、前記送材路の適所に被加工材の送行
方向終端を検出する終端検出器と、交流整流子電動機と
送材ベルト間の動力伝達部の適所に被加工材の送行距離
に応じパルスを発生するパルス発生手段を設け、該パル
ス発生手段のパルス出力信号を受け、被加工材の送行距
離を計数する距離計数回路と、更に交流整流子電動機と
送材ベルト間の動力伝達部に制動装置としての電磁ブレ
ーキを配設した構成とし、前記終端検出器の出力信号を
受け、パルス発生手段のパルス信号を距離計数回路にて
計数し、予め設定した被加工材の送行距離L1に達した
時点で、トリガ回路を介して双方向性半導体素子、及び
回転方向切換回路を消勢し、更に予め設定した被加工材
の送行距離L2に達した時点で電磁ブレーキを一定時間
t_1の間駆動し、その後時間t_2経過後、回転方向
切換回路を付勢し、トリガ回路を介して双方向性半導体
素子を付勢させることを特徴とした自動往復超仕上鉋盤
における送材機構。 2、前記双方向性半導体素子のトリガ回路として、双方
向性半導体素子の付勢開始時に一定時間t_3の間、導
通角を徐々に大きくして、交流整流子電動機の起動電流
を抑制するソフトスタート機構を有する特許請求の範囲
第1項記載の自動往復超仕上鉋盤における送材機構。 3、前記送行距離L2を慣性により送行させ、送材駆動
系の慣性エネルギーを減じた後、電磁ブレーキを駆動さ
せる特許請求の範囲第1項記載の自動往復超仕上鉋盤に
おける送材機構。 4、前記送行距離L2を計数中にパルス発生手段からの
パルス信号の周期幅を遂次測定する回路を有し、送行距
離L2が計数不能の場合、強制的にパルスを発して、自
動往復動作を続行させる特許請求の範囲第1項記載の自
動往復超仕上鉋盤における送材機構。[Scope of Claims] 1. A material feeding path is formed by a material feeding belt driven by a reversible electric motor and a plane blade facing the material feeding belt, and the material feeding belt moves the workpiece back and forth to create a plane blade. In a super finishing planer that performs cutting, an AC commutator motor is used as the reversible motor, and a rotation direction switching circuit that controls forward rotation and reverse rotation by switching the connection of one of the S_i coil or A_r coil of the AC commutator motor. , a bidirectional semiconductor element that controls the start/stop of the AC commutator motor, and a trigger circuit that triggers the bidirectional semiconductor element, and connects the AC commutator motor, rotation direction switching circuit, and bidirectional semiconductor element. The circuit is connected in series, with an end detector for detecting the end of the feed direction of the workpiece at a suitable location on the material feeding path, and an end detector for detecting the end of the workpiece in the feeding direction, and an end detector for detecting the end of the workpiece in the feeding direction between the AC commutator motor and the material feeding belt. A pulse generating means for generating pulses according to the conveying distance is provided, a distance counting circuit receives the pulse output signal of the pulse generating means and counts the conveying distance of the workpiece, and a distance counting circuit is provided between the AC commutator motor and the material conveying belt. The power transmission unit is configured to have an electromagnetic brake as a braking device, and upon receiving the output signal of the end detector, the pulse signal of the pulse generating means is counted by a distance counting circuit, and the preset workpiece is fed. When the distance L1 is reached, the bidirectional semiconductor element and the rotation direction switching circuit are deenergized via the trigger circuit, and when the preset workpiece feeding distance L2 is reached, the electromagnetic brake is applied for a certain period of time. A material feeding mechanism in an automatic reciprocating super-finishing plane machine characterized by driving for a period of time t_1, and then energizing a rotation direction switching circuit and energizing a bidirectional semiconductor element via a trigger circuit after a time t_2 has elapsed. . 2. As a trigger circuit for the bidirectional semiconductor device, a soft start that suppresses the starting current of the AC commutator motor by gradually increasing the conduction angle for a certain period of time t_3 at the start of energization of the bidirectional semiconductor device. A material feeding mechanism in an automatic reciprocating super-finishing plane machine according to claim 1, which has a mechanism. 3. The material feeding mechanism in the automatic reciprocating super-finishing plane machine according to claim 1, wherein the material is fed by inertia over the feeding distance L2, and after reducing the inertial energy of the material feeding drive system, an electromagnetic brake is driven. 4. It has a circuit that sequentially measures the cycle width of the pulse signal from the pulse generating means while counting the feeding distance L2, and when the feeding distance L2 cannot be counted, it forcibly emits a pulse and performs automatic reciprocating operation. A material feeding mechanism in an automatic reciprocating super-finishing plane machine according to claim 1, which continues the process.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8444986A JPS62239880A (en) | 1986-04-11 | 1986-04-11 | Work-piece carriage mechanism in automatic reciprocating superfinishing planer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8444986A JPS62239880A (en) | 1986-04-11 | 1986-04-11 | Work-piece carriage mechanism in automatic reciprocating superfinishing planer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62239880A true JPS62239880A (en) | 1987-10-20 |
Family
ID=13830920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8444986A Pending JPS62239880A (en) | 1986-04-11 | 1986-04-11 | Work-piece carriage mechanism in automatic reciprocating superfinishing planer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62239880A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0574802U (en) * | 1991-05-24 | 1993-10-12 | 株式会社日立工機原町 | Auxiliary table roller braking mechanism for woodworking machines |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54116800A (en) * | 1978-03-02 | 1979-09-11 | Hitachi Koki Haranomachi | Superfinishing planing machine |
JPS57142302A (en) * | 1981-02-27 | 1982-09-03 | Hitachi Koki Haranomachi | Superfinishing planer for woodworking |
JPS5839801B2 (en) * | 1979-03-29 | 1983-09-01 | クミアイ化学工業株式会社 | Method for producing emulsion of thiolcarbamate ester compound |
JPS5917905B2 (en) * | 1976-03-01 | 1984-04-24 | 松下電器産業株式会社 | FM receiver |
JPS60131081A (en) * | 1983-12-19 | 1985-07-12 | Shibaura Eng Works Co Ltd | Soft starter of series commutator motor |
JPS6048402B2 (en) * | 1979-12-13 | 1985-10-26 | 富士重工業株式会社 | Garbage loading device for garbage collection vehicle |
JPS6051006B2 (en) * | 1982-08-12 | 1985-11-12 | 松下電器産業株式会社 | electric cookware |
-
1986
- 1986-04-11 JP JP8444986A patent/JPS62239880A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5917905B2 (en) * | 1976-03-01 | 1984-04-24 | 松下電器産業株式会社 | FM receiver |
JPS54116800A (en) * | 1978-03-02 | 1979-09-11 | Hitachi Koki Haranomachi | Superfinishing planing machine |
JPS5839801B2 (en) * | 1979-03-29 | 1983-09-01 | クミアイ化学工業株式会社 | Method for producing emulsion of thiolcarbamate ester compound |
JPS6048402B2 (en) * | 1979-12-13 | 1985-10-26 | 富士重工業株式会社 | Garbage loading device for garbage collection vehicle |
JPS57142302A (en) * | 1981-02-27 | 1982-09-03 | Hitachi Koki Haranomachi | Superfinishing planer for woodworking |
JPS6051006B2 (en) * | 1982-08-12 | 1985-11-12 | 松下電器産業株式会社 | electric cookware |
JPS60131081A (en) * | 1983-12-19 | 1985-07-12 | Shibaura Eng Works Co Ltd | Soft starter of series commutator motor |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0574802U (en) * | 1991-05-24 | 1993-10-12 | 株式会社日立工機原町 | Auxiliary table roller braking mechanism for woodworking machines |
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