JPS62255066A - Grinding method and grinding machine having direct inching device for realizing said method - Google Patents
Grinding method and grinding machine having direct inching device for realizing said methodInfo
- Publication number
- JPS62255066A JPS62255066A JP10024986A JP10024986A JPS62255066A JP S62255066 A JPS62255066 A JP S62255066A JP 10024986 A JP10024986 A JP 10024986A JP 10024986 A JP10024986 A JP 10024986A JP S62255066 A JPS62255066 A JP S62255066A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- value
- grinding
- workpiece
- signal
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 7
- 238000004513 sizing Methods 0.000 claims description 25
- 238000005520 cutting process Methods 0.000 claims description 19
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 238000003754 machining Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Landscapes
- Machine Tool Sensing Apparatuses (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は研削盤において加工中工作物の回し金が外れた
場合若しくは剛性の低い工作物の加工中の撓み等加工状
況を監視する研削方法及び撓みを検出できる機能を有す
る直接定寸装置付研削盤に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a grinding method for monitoring machining conditions such as when a rotary wheel of a workpiece is detached from a grinding machine or when a workpiece with low rigidity is being machined and is deflected. The present invention relates to a grinding machine with a direct sizing device that has a function of detecting .
従来技術
加工工作物にキー溝、穴などの切欠き或いは突起のない
丸軸を加工する場合において、加工中に回し金の固定ボ
ルトがゆるんで滑りを起こしたり若しくは外れる場合が
ある。この状態は作業者が常に注意していないとなかな
か分からないものである。また剛性の低い工作物の加工
中しばしば危険な撓み量に達する場合もあった。BACKGROUND ART When machining a round shaft without cutouts such as key grooves or holes or protrusions on a workpiece, the fixing bolt of the rotary ring may loosen during machining, causing it to slip or come off. This condition is difficult to notice unless the operator is constantly paying attention. Furthermore, during the machining of workpieces with low rigidity, a dangerous amount of deflection was often reached.
発明が解決しようとする問題点
回し金の不作用、危険な撓み量等を作業者に代わり検出
する方法が未だ開発されておらず加工状況の把握が難し
いので全自動化への進展の問題点となっている。Problems that the invention aims to solve: A method to detect the inoperability of the rotary wheel, dangerous deflection, etc. in place of the operator has not yet been developed, and it is difficult to grasp the machining status, which is a problem with progress toward full automation. It has become.
問題点を解決するための手段
直接定寸装置の直径を計測するフイーラのそれぞれの変
位を検出する検出器からの出力にもとづき研削中の工作
物の撓み量を算出しその値が設定値を越えたときアラー
ム若しくはドレッシングを知らせる研削方法であり、ま
た工作物の１回転信号を出力する回転検出器１４と、工
作物を直径上の２点で計測する直接定寸装置の２個のフ
ィーラ１２ａ、１２ｂの変化を検出するそれぞれの検出
器１３ａ、１３ｂと、該検出器の出力を入力する定寸装
置管制部１５とを備え、該定寸装置管制部１５には前記
検出器の出力にもとづき直径値を演算する第１演算回路
２２と、該第１演算回路２２の演算値にもとづき定寸信
号を発生する制御信号発生回路２３と、前記第１演算回
路２３の演算値を前記回転検出器１４の１回転信号で記
憶する記憶回路２５と、該記憶回路２５の記憶値と前記
第１演算回路の１回転後の演算値にもとづき研削１回転
中の工作物の疑似撓み量を前記回転検出器１４の１回転
信号で演算する第２演算回路２７と、前記検出器１３ａ
、１３ｂの出力にもとづき工作物の撓み量を演算する第
３演算回路２８と、該第３演算回路２８の演算値を前記
第２演算回路２７の演算値と粗切込中の許容最大撓み量
の和と比較して第３演算回路２８の演算値が等しいか大
きなときは警報を出力する第１比較演算回路２９と、前
記第３演算回路２８の演算値を前記第２演算回路２９の
演算値と密切込中の許容撓み量の和を前記制御信号発生
回路２３の密切込み途中の設定工作物径の信号で比較し
て第３演算回路２日の演算値が等しいか大きいときは砥
石８のドレッシング信号または送り速度減速信号を出力
する第２比較演算回路３２とを含んでなるものである。Measures to solve the problem: Directly measure the diameter of the sizing device. Calculate the amount of deflection of the workpiece during grinding based on the output from the detector that detects the displacement of each of the fillers. This is a grinding method that notifies an alarm or dressing when the grinding occurs, and also includes two feelers 12a: a rotation detector 14 that outputs a signal for one rotation of the workpiece, and a direct sizing device that measures the workpiece at two points on the diameter. 12b, and a sizing device control section 15 that inputs the output of the detectors. A first calculation circuit 22 that calculates a value; a control signal generation circuit 23 that generates a sizing signal based on the calculation value of the first calculation circuit 22; and a control signal generation circuit 23 that generates a sizing signal based on the calculation value of the first calculation circuit 22; a storage circuit 25 for storing a one-rotation signal; and a storage circuit 25 for storing a pseudo deflection amount of the workpiece during one rotation of grinding based on the stored value of the storage circuit 25 and the calculated value after one rotation of the first calculation circuit. 14, a second calculation circuit 27 that calculates with the one rotation signal, and the detector 13a.
, 13b, and the calculated value of the third calculating circuit 28 is combined with the calculated value of the second calculating circuit 27 and the allowable maximum deflection amount during rough cutting. A first comparison arithmetic circuit 29 outputs an alarm when the arithmetic value of the third arithmetic circuit 28 is equal to or larger than the sum of The sum of the value and the allowable deflection amount during fine cutting is compared with the signal of the set workpiece diameter during fine cutting from the control signal generating circuit 23, and if the calculated values of the third calculation circuit 2 are equal or larger, the grinding wheel 8 A second comparison calculation circuit 32 outputs a dressing signal or a feed speed deceleration signal.
実施例 以下本発明の実施例を図面にもとづき説明する。Example Embodiments of the present invention will be described below based on the drawings.
周知の研削盤において、図示しないべ、ド上で左右動さ
れるテーブル上にはセンタ１を嵌着した主軸を有する主
軸台２が載置固着され、モータ３で回転されるチャック
４が主軸と同心に軸承さている。主軸台２に対向してセ
ンタ５を嵌着した心理台６がテーブル上に載置固定され
ている。そして工作物Ｗは両センタ１，５で挟持される
。ベッド上テーブルの後側に切込方向に移動可能に砥石
台７が載置され砥石８を嵌着した砥石軸を回転可能に軸
承するとともにモータ９で回転される送りねじ１０によ
って切込が与えられる。またテーブル上には工作物Ｗの
加工寸法を計測する直接定寸装置１１が設定されている
。この直接定寸装置１１は図示しないテーブル上に固定
した取り付は台上で作業位置と待機位置に進退され、工
作物Ｗの上面に接触する上フイーラ１２ａと工作物の下
面に接触する下フイーラ１２ｂとはそれぞれに変位検出
器１３ａ、１３ｂを備えている。変位検出器は加工に先
だち工作物Ｗのマスクにて設定しておきそれぞれがマス
クの半径値よりの増減を出力するものである。そして変
位検出器１３ａ、１３ｂの出力は定寸装置管制部１５に
送られこの管制部からの出力信号は本機の図示しない制
御装置に送り出される。そして主軸台２には工作物の１
回転信号を出力する近接スイッチ１４が取り付けられて
いる。In a well-known grinding machine, a headstock 2 having a main shaft fitted with a center 1 is mounted and fixed on a table which is moved left and right on a table (not shown), and a chuck 4 rotated by a motor 3 is attached to the main shaft. Concentrically supported. A psychological table 6 on which a center 5 is fitted is mounted and fixed on a table, facing the headstock 2. The workpiece W is held between both centers 1 and 5. A grindstone head 7 is placed on the rear side of the table on the bed so as to be movable in the cutting direction, rotatably supports a grindstone shaft with a grindstone 8 fitted thereon, and a feed screw 10 rotated by a motor 9 provides a cutting depth. It will be done. Further, a direct sizing device 11 for measuring the machining dimensions of the workpiece W is set on the table. This direct sizing device 11 is fixed on a table (not shown) and is moved back and forth between a working position and a standby position on the table, with an upper feeler 12a in contact with the upper surface of the workpiece W and a lower feeler 12a in contact with the lower surface of the workpiece. 12b is provided with displacement detectors 13a and 13b, respectively. The displacement detectors are set on the mask of the workpiece W prior to machining, and each outputs an increase/decrease from the radius value of the mask. The outputs of the displacement detectors 13a and 13b are sent to a sizing device control section 15, and an output signal from this control section is sent to a control device (not shown) of the machine. The workpiece 1 is placed on the headstock 2.
A proximity switch 14 is attached to output a rotation signal.
定寸装置管制部１５は次の回路より構成されている。即
ち制御装置からの測定開始信号により変位検出器１３ａ
、１３ｂの出力を入力し、工作物Ｗにキー溝、穴等の切
欠き位置での出力をカットする規制回路２１．規制回路
２１を通過した変位検出器１３ａ、１３ｂの各値Ｇ＋、
Ｇｔを入力してｃ＋＋ｃｚ ｘｄの演算を行わせ直径値
を算出する第、演算回路２２．該第１演算回路の研削加
工中の直径値が設定された砥石台の早戻りの正寸工作物
直径ｄｏ、スパークアウトの工作物直径ｄ１． 密切
込み途中の工作物直径ｄ！、密切込み開始の工作物直径
ｄ、におけるそれぞれの設定信号３Ｐ、２Ｐ、２“Ｐ。The sizing device control section 15 is composed of the following circuits. That is, the displacement detector 13a is activated by a measurement start signal from the control device.
, 13b, and cuts the output at positions of notches such as keyways and holes in the workpiece W. Each value G+ of the displacement detectors 13a and 13b that has passed through the regulation circuit 21,
A calculation circuit 22. inputs Gt and calculates the diameter value by calculating c++cz xd. The diameter value during the grinding process of the first arithmetic circuit is set to the exact workpiece diameter do of quick return of the grindstone head, the workpiece diameter d1 of spark-out. Workpiece diameter d during close cutting! , the workpiece diameter d at the start of fine cut, respectively setting signals 3P, 2P, 2"P.
ＩＰを出力するとともにフィーラの振動等により発生す
る不安定要素をカットする制御信号発生回路２３、制御
信号発生回路２３を通過した工作物直径値を近接スイッ
チ１４の１回転信号が出力されたときアンド回路２４の
ゲートが開かれ入力する第１記憶回路２５、制御信号発
生回路２３を通過した工作物直径値ｄｒとそれより１回
転前の第１記憶回路２５に記憶された工作物直径値ｄ、
−１とを近接スイッチ１４の信号が出力さたときアンド
回路２６のゲートが開かれ設定値にとでｋ（ｄ、−。A control signal generation circuit 23 that outputs IP and cuts unstable elements caused by vibration of the feeler, etc. The workpiece diameter value that has passed through the control signal generation circuit 23 is ANDed when the one rotation signal of the proximity switch 14 is output. The gate of the circuit 24 is opened to input the workpiece diameter value dr that has passed through the first storage circuit 25 and the control signal generation circuit 23, and the workpiece diameter value d that was stored in the first storage circuit 25 one rotation earlier.
-1 and the signal from the proximity switch 14 is output, the gate of the AND circuit 26 is opened and the set value becomes k(d, -.
−ｄｒ）・δ° の演算を行わせる第２演算回路２７、
規制回路２１を通過した値Ｇ＋、Ｇ＊の（Ｇ ｔ Ｇ
、）／２＝δの演算を行なわせ第３演算回路２８、この
第３演算回路２８の演算値δが研削中の許容最大撓み量
δ、と第２演算回路２７の演算値δ°の和と比較されδ
が大きいかまたは等しいときアラーム信号を制御装置に
入力する第１比較演算回路２９、密切込途中の工作物の
設定直径値ｄ２になったときの定寸信号２°Ｐを所定時
間記憶する第２記憶回路３０の出力によりアンド回路３
１のゲートが開かれたとき第２演算回路２７、第３演算
回路２８の出力及び密研削中の許容撓み量δｂを入力し
、第３演算回路２８の出力δが第２演算回路２７の出力
δ′と密切込中の許容撓み量δｂの和と比較されδが大
きいかまたは等しいときは本機の制御装置にドレッシン
グ信号或いは送り速度減速信号を出力する第２比較演算
回路３２等で工作物の加工中の撓みを検出する。また第
１記憶回路２５の記憶直径値ｄｒ−＋ と第１演算回路
２２の１回転後の直径値ｄｒを近接スイッチ１４の１回
転信号でアンド回路３３のゲートが開かれ工作物１回転
当たりの直径減少ｌｉｄ、、−ｄｒと１回転当たりの平
均直径減少量の設定値Δｄとを比較し設定値より大きい
とき制御装置へドレッシング信号を出力する第３比較演
算回路３４で工作物１回転当たりの直径減少量を検出す
る。また第３演算回路２８の演算値δを近接スイッチ１
４の１回転信号が出力されたときアンド回路３５のゲー
トが開かれ記憶する第３記憶回路３６、第３演算回路２
日の演算値δｒと第３記憶回路３６の１回転前の値δ、
−８とを近接スイッチ１４の１回転信号でアンドゲート
３７が開かれ変化率δ７−１／δｒを演算しその値を制
御装置に出力する第４演算回路３８等で加工状況監視を
する回路により構成されている。-dr)・δ° second calculation circuit 27,
(G t G
)/2=δ is calculated by the third calculation circuit 28, and the calculation value δ of the third calculation circuit 28 is the sum of the maximum allowable deflection amount δ during grinding and the calculation value δ° of the second calculation circuit 27. compared to δ
a first comparator circuit 29 which inputs an alarm signal to the control device when d2 is greater than or equal to AND circuit 3 by the output of memory circuit 30
When gate 1 is opened, the outputs of the second arithmetic circuit 27 and the third arithmetic circuit 28 and the allowable deflection amount δb during fine grinding are input, and the output δ of the third arithmetic circuit 28 is the output of the second arithmetic circuit 27. δ′ is compared with the sum of the allowable deflection amount δb during fine cutting, and if δ is larger or equal, the second comparison calculation circuit 32 outputs a dressing signal or a feed speed deceleration signal to the control device of this machine, and the workpiece is Detects deflection during machining. Furthermore, the gate of the AND circuit 33 is opened using the stored diameter value dr-+ of the first memory circuit 25 and the diameter value dr after one rotation of the first arithmetic circuit 22 by the one-rotation signal of the proximity switch 14, and The third comparison calculation circuit 34 compares the diameter reduction lid, -dr with the set value Δd of the average diameter reduction per revolution, and outputs a dressing signal to the control device when it is larger than the set value. Detect the amount of diameter reduction. Further, the calculated value δ of the third calculation circuit 28 is set to the proximity switch 1.
When the one rotation signal of No. 4 is output, the gate of the AND circuit 35 is opened and the third storage circuit 36 stores the information, and the third arithmetic circuit 2
The calculated value δr of the day and the value δ of the third storage circuit 36 one revolution before,
-8, the AND gate 37 is opened by the one-rotation signal of the proximity switch 14, and the machining status is monitored by the fourth calculation circuit 38, etc., which calculates the rate of change δ7-1/δr and outputs the value to the control device. It is configured.
なおこの工作物１回転当たりの直径減少量の検出及び加
工状況監視の回路は必要により適宜設けられるものであ
る。Note that this circuit for detecting the amount of diameter reduction per revolution of the workpiece and for monitoring the machining status is provided as appropriate.
作用 研削中玉作物は第３図に示すように切込速度。action During grinding, the cutting speed is as shown in Figure 3.
切込量に応じて研削力Ｆを受けその方向にδｍ撓まされ
る。研削力Ｆは接線力Ｆｔ、法線力Ｆｎとに分解できこ
の比Ｆ ｔ ／ Ｆ ｎ−αは約１／２ となることが
知られている。定寸装置１１のフィーラ１２ａ、１２ｂ
は上下方向に変位可能となっているため接線力ｐｔのみ
の撓みを検出することができる。また砥石によって研削
される工作物Ｗは第４図のように１回転中でいわゆるの
字形に研削されるため撓みが零としたときでも直接定寸
装置の出力は撓みがあるように現れる。これを疑似撓み
量とする。その量は直径値ｄｒとその１回転前の直径４
１ｄ、Ｉ との差（ｄ、−、−ｄ ｒ）で１７４回転
過ぎた上面ではｉｔ ＝１ ／４（ｄ、−＋ −ｄ
ｒ） ／２、砥石の裏側ではＩｌｚ ＝２／４（ｄ、
−＋ −ｄ ｒ） ／２、下側ではｊ！ −３／４（ｄ
−＋ ｄ ｒ ） １／２従って上面と下面との差
Ｊ ＝１／４（ｄ−＋ ｄ ｒ ） １／２である
。It receives the grinding force F according to the depth of cut and is deflected by δm in that direction. It is known that the grinding force F can be decomposed into a tangential force Ft and a normal force Fn, and the ratio Ft/Fn-α is approximately 1/2. Feelers 12a and 12b of the sizing device 11
is movable in the vertical direction, so it is possible to detect the deflection of only the tangential force pt. Further, since the workpiece W being ground by the grindstone is ground into a so-called square shape during one rotation as shown in FIG. 4, even when the deflection is zero, the output of the direct sizing device appears to be deflected. This is defined as the amount of pseudo deflection. The amount is the diameter value dr and the diameter 4 before that one rotation.
It = 1/4 (d, -+ -d
r) /2, on the back side of the grinding wheel Ilz = 2/4 (d,
−+ −d r) /2, on the lower side j! −3/4(d
−+d r ) 1/2 Therefore, the difference between the upper surface and the lower surface J = 1/4 (d−+ d r ) 1/2.
工作物が決定されると直径値が正寸のｄ、であるマスク
により直接定寸装置１１を調整し検出器１３ａ、１３ｂ
の出力を零にしておく、工作物Ｗが両センタ１．５に挟
持され研削開始で直接定寸装置が前進されて計測位置と
なり規制回路２１が作動する。第５図のように砥石台７
が早送り前進され所定位置で粗切込みに切換わり途中で
砥石が工作物に接触して研削が開始されると研削力Ｆに
よって工作物が図のように撓む、研削の進行とともに直
接定寸装置１１の検出機１３ａ、１３ｂよりそれぞれマ
スクの半径値に対してプラス量が出力され、第１演算回
路２２において直径値に計算される。その値は第１記憶
回路２５に１回転毎に記憶され第２演算回路２７におい
て１回転中の疑似撓み量δ゛を算出し、このδ° と設
定値δａとの和と第３演算回路２８の撓み量δとの大小
を第１比較演算回路２９で比較して監視する。ここでδ
が小さくてアラームが出力されなければ研削が続行され
、大きいか等しくてアラーム出力があれば砥石台を後退
させ必要な処置をする。直径が設定値ｄ、になると制御
信号発生回路２３よりＩＰ傷信号制御装置に出力されモ
ータ９を制御して砥石台７の送りが密送りに切り換えら
れる。密切込みとなると研削力Ｆも小さくなって工作物
Ｗの撓み量は急激に減少していく、工作物直径が設定値
ｄ２に達すると制御信号発生回路２３より２”Ｐ信号が
出力され、その信号は第２記憶回路３０に記憶される。When the workpiece is determined, the sizing device 11 is directly adjusted using a mask whose diameter value is the exact size d, and the detectors 13a and 13b
When the workpiece W is held between both centers 1.5 and grinding is started, the sizing device is directly advanced to the measurement position and the regulation circuit 21 is activated. As shown in Figure 5, the grindstone head 7
is advanced in rapid traverse and switches to coarse cutting at a predetermined position, and when the grinding wheel contacts the workpiece and grinding begins, the workpiece is deflected as shown in the figure by the grinding force F. Direct sizing device as grinding progresses. The eleven detectors 13a and 13b each output a positive amount relative to the radius value of the mask, and the first calculation circuit 22 calculates the positive amount to the diameter value. The value is stored in the first storage circuit 25 for each rotation, and the second calculation circuit 27 calculates the amount of pseudo deflection δ during one rotation, and the sum of this δ° and the set value δa and the third calculation circuit The first comparison calculation circuit 29 compares and monitors the magnitude of the deflection amount δ with respect to the amount of deflection δ. Here δ
If it is small and no alarm is output, grinding continues; if it is large or equal and an alarm is output, the grinding head is moved back and necessary measures are taken. When the diameter reaches the set value d, the signal is output from the control signal generation circuit 23 to the IP flaw signal control device, which controls the motor 9 to switch the feed of the grindstone head 7 to dense feed. When the depth of cut becomes close, the grinding force F also decreases, and the amount of deflection of the workpiece W rapidly decreases.When the workpiece diameter reaches the set value d2, the control signal generation circuit 23 outputs a 2"P signal, and The signal is stored in the second storage circuit 30.
この密切込み中の撓み量δは第２演算回路２７の疑似撓
み量δ”と密切込中の許容撓み黴δｂの和と第２記憶回
路３０の出力のあるときに比較されてδが小さければ研
削を続行し、δが大きいか等しければ切込み速度を減速
するかその研削が終わったあとで砥石のドレッシングが
行われる。密切込みにより工作物直径が設定値ｄ、に達
すると、制御信号発生回路２３から２Ｐ信号が制御装置
に出力され、モータ９の駆動が停止されスパークアウト
に入る。ここで撓みによる切り残し量が取り除かれ、直
径値が正寸ｄ０に達すると制御信号発生回路２３から３
Ｐ信号が制御装置に出力され、モータ９が逆転されると
ともに図示しないシリンダ装置により砥石台７が早戻り
後退される。The amount of deflection δ during the fine cutting is compared with the sum of the pseudo deflection amount δ'' of the second arithmetic circuit 27, the allowable deflection δb during the fine cutting, and the output of the second memory circuit 30, and if δ is small, Grinding continues, and if δ is large or equal, the cutting speed is reduced or the grinding wheel is dressed after the grinding is completed.When the workpiece diameter reaches the set value d due to the fine cutting, the control signal generation circuit A 2P signal is output from 23 to the control device, the drive of the motor 9 is stopped, and spark-out is entered.The uncut amount due to deflection is removed here, and when the diameter value reaches the correct size d0, the control signal generation circuit 23 outputs a 2P signal to the control device.
A P signal is output to the control device, the motor 9 is reversed, and the grindstone head 7 is quickly returned and retracted by a cylinder device (not shown).
このようにして工作物の研削は行われる。なお工作物１
回転当たりの直径の減少量によってドレッシング信号を
出力、若しくは撓み量を変化率の監視を必要により併用
またはそれに替えるものである。Grinding of the workpiece is performed in this manner. Furthermore, workpiece 1
A dressing signal is output depending on the amount of decrease in diameter per rotation, or monitoring of the rate of change in the amount of deflection is used in conjunction with or in place of that as necessary.
効果
以上詳述したように本発明は加工中工作物の撓み量が連
続して検出できるため、回し金が外れた異常研削或いは
危険な状態にある撓み量を早期に発見できて加工時の安
全と生産性の向上を図れる効果がある。Effects As detailed above, since the present invention can continuously detect the amount of deflection of the workpiece during machining, it is possible to detect abnormal grinding in which the rotor has come off or the amount of deflection that is in a dangerous state at an early stage, thereby improving safety during machining. This has the effect of improving productivity.
第１図は本発明の制御線図、第２図は直接定寸装置の説
明図、第３図は工作物撓みの説明図、第４図は１回転中
の工作物の研削形状を示す図、第５図はプランジカット
切込時の砥石切込量、切込速度、工作物の撓み量を示す
図である。
２・・主軸台 ６・・心理台 ７・・砥石台１１・・直
接定寸装置 １４・・近接スイッチ１５・・定寸装置管
制部Fig. 1 is a control diagram of the present invention, Fig. 2 is an explanatory diagram of the direct sizing device, Fig. 3 is an explanatory diagram of workpiece deflection, and Fig. 4 is a diagram showing the grinding shape of the workpiece during one rotation. , FIG. 5 is a diagram showing the cutting depth of the grindstone, the cutting speed, and the deflection amount of the workpiece during plunge cutting. 2... Headstock 6... Psychological stand 7... Grinding wheel head 11... Direct sizing device 14... Proximity switch 15... Sizing device control section
Claims (2)
れの変位を検出する検出器からの出力にもとづき研削中
の工作物の撓み量を算出しその値が設定値を越えたとき
アラーム若しくはドレッシングを知らせることを特徴と
する研削方法。(1) Calculate the amount of deflection of the workpiece being ground based on the output from the detector that detects the displacement of each of the fillers that measure the diameter of the direct sizing device, and issue an alarm or dressing when the deflection value exceeds the set value. A grinding method characterized by informing.
作物を直径上の２点で計測する直接定寸装置の２個のフ
イーラの変化を検出するそれぞれの検出器と、該検出器
の出力を入力する定寸装置管制部とを備え、該定寸装置
管制部には前記検出器の出力にもとづき直径値を演算す
る第１演算回路と、該第１演算回路の演算値にもとづき
定寸信号を発生する制御信号発生回路と、前記第１演算
回路の演算値を前記回転検出器の１回転信号で記憶する
記憶回路と、該記憶回路の記憶値と前記第１演算回路の
１回転後の演算値にもとづき研削１回転中の工作物の疑
似撓み量を前記回転検出器の１回転信号で演算する第２
演算回路と、前記検出器の出力にもとづき工作物の撓み
量を演算する第３演算回路と、該第３演算回路の演算値
を前記第２演算回路の演算値と粗切込中の許容最大撓み
量の和と比較して第３演算回路の演算値が等しいか大き
なときは警報を出力する第１比較演算回路と、前記第３
演算回路の演算値を前記第２演算回路の演算値と密切込
中の許容撓み量の和を前記制御信号発生回路の密切込途
中の設定工作物径の信号で比較して第３演算回路の演算
値が等しいか大きいときは砥石のドレッシング信号また
は送り速度減速信号を出力する第２比較演算回路とを含
んでなることを特徴とする直接定寸装置付研削盤。(2) A rotation detector that outputs a signal for one revolution of the workpiece, and a direct sizing device that measures the workpiece at two points on its diameter, each of which detects changes in the two feelers, and the detection a sizing device control section that inputs the output of the detector; the sizing device control section includes a first arithmetic circuit that calculates a diameter value based on the output of the detector; a control signal generation circuit that generates a sizing signal based on the sizing signal; a storage circuit that stores the calculated value of the first calculation circuit as a one-rotation signal of the rotation detector; A second step that calculates a pseudo deflection amount of the workpiece during one rotation of grinding based on the calculated value after one rotation using the one rotation signal of the rotation detector.
an arithmetic circuit; a third arithmetic circuit that calculates the amount of deflection of the workpiece based on the output of the detector; and a calculation value of the third arithmetic circuit that is calculated by the second arithmetic circuit and a maximum allowable value during rough cutting. a first comparison calculation circuit that outputs an alarm when the calculation value of the third calculation circuit is equal to or larger than the sum of the deflection amounts;
The calculation value of the calculation circuit is compared with the calculation value of the second calculation circuit and the sum of the allowable deflection amount during fine cutting with the signal of the set workpiece diameter during fine cutting of the control signal generation circuit, and the calculation value of the third calculation circuit is calculated. A grinding machine with a direct sizing device, comprising: a second comparison calculation circuit that outputs a grindstone dressing signal or a feed speed deceleration signal when the calculated values are equal or larger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10024986A JPS62255066A (en) | 1986-04-30 | 1986-04-30 | Grinding method and grinding machine having direct inching device for realizing said method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10024986A JPS62255066A (en) | 1986-04-30 | 1986-04-30 | Grinding method and grinding machine having direct inching device for realizing said method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62255066A true JPS62255066A (en) | 1987-11-06 |
| JPH0547351B2 JPH0547351B2 (en) | 1993-07-16 |
Family
ID=14268954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10024986A Granted JPS62255066A (en) | 1986-04-30 | 1986-04-30 | Grinding method and grinding machine having direct inching device for realizing said method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62255066A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03149110A (en) * | 1989-10-31 | 1991-06-25 | Okuma Mach Works Ltd | Recognition method for insertion of drive pin of workpiece |
| JP2014533207A (en) * | 2011-09-27 | 2014-12-11 | フリッツ スチューダー アーゲー | Machine tool and workpiece measurement method |
-
1986
- 1986-04-30 JP JP10024986A patent/JPS62255066A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03149110A (en) * | 1989-10-31 | 1991-06-25 | Okuma Mach Works Ltd | Recognition method for insertion of drive pin of workpiece |
| JP2014533207A (en) * | 2011-09-27 | 2014-12-11 | フリッツ スチューダー アーゲー | Machine tool and workpiece measurement method |
| US9421667B2 (en) | 2011-09-27 | 2016-08-23 | Fritz Studer Ag | Machine tool for measuring a workpiece |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0547351B2 (en) | 1993-07-16 |
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