JP2686510B2 - Whetstone repair device for double-headed grinder - Google Patents

Description

【発明の詳細な説明】 〔発明の目的〕 「産業上の利用分野」 本発明は両頭研削盤の砥石面の修正を行う砥石修正装
置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] [Field of the Invention] The present invention relates to a grindstone correcting device for correcting the grindstone surface of a double-sided grinder.

「従来の技術と発明が解決しようとする課題」 両頭研削盤の砥石面の修正は例えばアーム端に単石ダ
イヤモンドを砥石面に対向するように設け、砥石を研削
位置から砥石修正位置まで後退させた位置から所定切込
みを与えてアーム端を砥石のほぼ半径方向に移動させて
砥石修正を行つている。"Problems to be solved by the conventional technology and invention" For the correction of the grindstone surface of the double-sided grinder, for example, a single stone diamond is provided at the end of the arm so as to face the grindstone surface, and the grindstone is retracted from the grinding position to the grindstone correction position. From this position, a predetermined cut is made to move the arm end in a substantially radial direction of the grindstone to correct the grindstone.

従来の砥石の送り制御方法は研削位置を制御装置に記
憶させた後砥石修正位置まで砥石を後退させ、こゝで切
込量だけ前進して砥石修正工具を対向する砥石面間に進
入させて砥石面の修正を行う。その後前記した研削位置
から砥石修正位置までの後退量を前進して砥石修正後研
削を行つている。The conventional grindstone feed control method is to store the grinding position in the control device, then move the grindstone back to the grindstone correction position, and move the grindstone advancing by the depth of cut to move the grindstone correction tool between the opposing grindstone surfaces. Correct the whetstone surface. After that, the retreat amount from the grinding position to the grindstone correction position is advanced to perform grinding after the grindstone correction.

しかし乍ら、研削中に左右の砥石が同量減らなかつた
場合砥石修正位置にて片側の砥石面には単石ダイアモン
ドに多く当たり他の一方の砥石面は当たらないという問
題がある。又ダイヤモンドの摩耗があつた場合、その摩
耗分は加工物の寸法が（−）する。However, if the right and left grindstones do not decrease by the same amount during grinding, there is a problem in that at the grindstone correction position, one grindstone surface hits many single stone diamonds and the other grindstone surface does not hit. When the diamond is worn, the size of the work is reduced by the amount of the wear.

本発明は上記従来の問題点を解消し、両側の砥石面が
同時に正確に修正される両頭研削盤の砥石修正位置を提
供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above conventional problems and to provide a grindstone correction position of a double-sided grinder in which the grindstone surfaces on both sides are simultaneously and accurately corrected.

〔発明の構成〕[Configuration of the invention]

「課題を解決するための手段」 本発明は端面を研削作用面とする砥石面をもつ砥石を
回転自在に備えた両頭の砥石台を該砥石面を対向させ、
各々の砥石を砥石軸の軸方向に移動させる送り装置を備
え、両砥石面間に進退して砥石面の修正を行う砥石面修
正用工具を備えた両頭研削盤の砥石修正装置において、
砥石修正装置に砥石面修正工具が砥石に接触した際の振
動を検出する高周波振動センサと、該高周波振動センサ
の信号を受けて、前記各砥石台の送りと砥石面修正用工
具の運動とを制御する制御装置を備えてなり、前記制御
装置は砥石面の修正時、研削位置の両砥石台の現在位置
を記憶した後、前回の砥石修正位置よりも多く後退さ
せ、両砥石間に砥石修正工具を進入し、何れか一方の砥
石台を砥石修正工具に近ずけ、該砥石台の砥石と砥石修
正工具との接触を高周波振動センサが検知した信号によ
り該砥石台を停止すると共に後退させて停止させ、他方
の砥石台を砥石修正工具に向つて送り、該他方の砥石台
の砥石と砥石修正工具との接触を高周波振動センサが検
知した信号により該他方の砥石台を停止すると共に後退
させて停止させ、砥石修正工具を両砥石間より退出さ
せ、前記各砥石台の各砥石と砥石修正工具との接触後の
前記後退量に砥石の修正のための切込量を加えた量だけ
両砥石台を前進停止させ、次に砥石修正工具を前進し退
出させて砥石面を修正し、修正後の砥石台位置を記憶し
た後、各砥石台を前回の研削位置よりも砥石修正工具切
込量だけ前進した位置に進めるように砥石の送り装置及
び砥石修正装置の駆動装置を制御することを特徴とする
両頭研削盤の砥石修正装置である。"Means for Solving the Problem" The present invention is a two-headed grinding wheel head provided rotatably with a grinding wheel having a grinding wheel surface having an end surface as a grinding action surface, the grinding wheel surface is opposed,
In a grindstone correcting device of a double-sided grinder equipped with a feed device for moving each grindstone in the axial direction of the grindstone shaft, a grindstone surface correcting tool for advancing and retracting between the grindstone surfaces to correct the grindstone surface,
A high-frequency vibration sensor that detects the vibration when the grindstone-correcting tool contacts the grindstone in the grindstone-correcting device, and receives the signal from the high-frequency vibration sensor to feed each of the grinding wheels and to move the grindstone-surface-correcting tool. A control device for controlling is provided, and the control device stores the current positions of both grinding wheels at the grinding position when correcting the grinding wheel surface, and then retracts more than the previous grinding wheel correction position to correct the grinding wheel between both grinding wheels. Enter the tool, move one of the grindstones closer to the grindstone correcting tool, and stop and retract the grindstone by the signal detected by the high-frequency vibration sensor for the contact between the grindstone of the grindstone and the grindstone correcting tool. Stop, and send the other grindstone head toward the grindstone correcting tool, and stop and retreat the other grindstone by the signal detected by the high-frequency vibration sensor when the grindstone of the other grindstone and the grindstone correcting tool is in contact. Let it stop and grind The correction tool is retracted from between the two grindstones, and both grindstones are stopped forward by the amount of the retreat amount after contact between each grindstone of each grindstone and the grindstone correction tool plus the cutting amount for grindstone correction. Then, the grindstone correcting tool is advanced and retracted to correct the grindstone surface, the corrected grindstone position is memorized, and then each grindstone position is advanced from the previous grinding position by the grindstone tool cutting depth. A grindstone correcting device for a double-sided grinder, characterized in that a drive device for the grindstone feeding device and a drive device for the grindstone correcting device are controlled so as to proceed to step 1.

「実施例」 以下、本発明の実施例を図面に従つて説明する。第１
図は両頭研削盤を模式的に画いた正面図、第２図は第１
図のＡ−Ａ矢視図である。Hereinafter, embodiments of the present invention will be described with reference to the drawings. First
The figure is a front view of a double-sided grinder, and Fig. 2 is the first.
It is an AA arrow line view of the figure.

端面を研削作用面とする砥石面１を持つ砥石2a,2bを
固定された砥石軸３は砥石台4a,4bに軸承されている。
砥石軸３は砥石台4a,4bに夫々備える電動機（図示され
ない）により駆動される。加工物は両砥石2a,2bの砥石
面１間にキヤリヤ又はスルフイード装置により送り込ま
れて研削される。A grindstone shaft 3 to which grindstones 2a and 2b having a grindstone surface 1 having an end face as a grinding action surface is fixed is supported by grindstone bases 4a and 4b.
The grindstone shaft 3 is driven by electric motors (not shown) provided on the grindstone bases 4a and 4b, respectively. The workpiece is fed between the grindstone surfaces 1 of both grindstones 2a and 2b by a carrier or a sulfide device and is ground.

対向する砥石面1,1間の間隔を調整するため、機台５
の上面の第１図において左右方向の案内に砥石台4a,4b
が滑合し、砥石台は夫々の送り装置6a,6bにより後退す
るようになつている。送り装置6a,6bは例えば砥石軸4a,
4bに固定したナツト７にねじ込まれた送りねじ８の一端
が機台５に軸承されると共に機台５に固定された送り用
のサーボモータ（以下送りモータという）9a,9bに連結
されたものであり、送りモータ9a,9bの回転は送りねじ
８を回転し、送りねじ８はナツト７を送つて砥石台4a,4
bを移動するようになつている。In order to adjust the distance between the facing grindstone surfaces 1 and 1, the machine base 5
As shown in Fig. 1 on the upper surface of the wheel, the grindstones 4a, 4b are used for the left and right guides.
And the whetstone heads are moved back by the respective feeding devices 6a and 6b. The feeding devices 6a, 6b are, for example, the grindstone shaft 4a,
One end of a feed screw 8 screwed into a nut 7 fixed to 4b is supported by a machine base 5 and connected to a feed servo motor (hereinafter referred to as a feed motor) 9a, 9b fixed to the machine base 5. The rotation of the feed motors 9a, 9b rotates the feed screw 8, and the feed screw 8 feeds the nut 7 to move the grindstones 4a, 4b.
It is designed to move b.

砥石修正工具11は砥石軸３と平行なアーム軸12が軸受
13に軸承されており、アーム軸12は固設した減速機付ス
テツプモータ14に連結され、アーム軸12に固定された修
正アーム15端には砥石2a,2bの砥石面１に夫々対向する
単石ダイヤモンド（以下ダイヤモンドという）16a,16b
が固定されている。砥石修正工具11にはダイヤモンド16
a,16bが砥石2a,2bの砥石面１に接した際に発生する超音
波振動を捕捉するように高周波振動センサ17が設けてあ
る。The whetstone correction tool 11 has an arm shaft 12 that is parallel to the whetstone shaft 3 as a bearing.
The arm shaft 12 is connected to a fixed step motor 14 with a speed reducer, and the end of the correction arm 15 fixed to the arm shaft 12 faces the grindstone surface 1 of the grindstones 2a and 2b. Stone diamond (hereinafter diamond) 16a, 16b
Has been fixed. Diamond 16 for whetstone correction tool 11
A high frequency vibration sensor 17 is provided so as to capture the ultrasonic vibration generated when a and 16b come into contact with the grindstone surface 1 of the grindstones 2a and 2b.

修正アーム15には両砥石2a,2bの砥石面１がダイヤモ
ンド16a,16bに接触する位置よりも修正アーム15に近接
した際に噴出空気量を減少され送り込まれる空気圧を高
めるノズル18a,18bが設けられ、ノズル18a,18bにはアー
ム15中の通路19a,19bを介して空気供給配管21a,21bに連
通している。空気供給配管21a,21bは圧縮空気源に通じ
ており、圧力スイツチ22a,22bが介装されている。The correcting arm 15 is provided with nozzles 18a, 18b for reducing the amount of air blown and increasing the air pressure fed when the grinding wheel surface 1 of both grinding wheels 2a, 2b is closer to the correcting arm 15 than the position where the grinding wheel surfaces 1 contact the diamonds 16a, 16b. The nozzles 18a, 18b communicate with the air supply pipes 21a, 21b via the passages 19a, 19b in the arm 15. The air supply pipes 21a and 21b communicate with the compressed air source, and the pressure switches 22a and 22b are interposed.

高周波振動センサ17の検出した信号は増幅器及びA/D
変換器を内蔵したセンサ用アンプ23を介して制御装置24
に入力されると制御装置24は左又は右の送りモータコン
トローラ25a,25bから左又は右の送りモータドライバ26
a,26bを介して運転している方の送りモータ9a,9bを停止
させるようになつている。左右の送りねじ８に連結した
エンコーダ27a,27bの検出した送りねじ８の回転位置従
つて砥石2a,2bの位置は制御装置24に送られるようにな
つている。減速機付ステツプモータ14は制御装置24から
ドライバ28を介して一定角度揺動運動をするようになつ
ている。The signal detected by the high frequency vibration sensor 17 is an amplifier and an A / D.
Control device 24 via sensor amplifier 23 with built-in converter
Is input to the left or right feed motor controller 25a, 25b from the left or right feed motor driver 26.
The feed motors 9a and 9b operating through a and 26b are stopped. The rotational positions of the feed screws 8 detected by the encoders 27a and 27b connected to the left and right feed screws 8 and, accordingly, the positions of the grindstones 2a and 2b are sent to the control device 24. The step motor with reduction gear 14 is adapted to perform a swinging motion from the control device 24 via a driver 28 at a constant angle.

第４図は高周波振動センサの取付例を示し、修正アー
ム15を支持するアーム軸12を支持する軸受13端に固定し
たケース30中の円筒孔30aに高周波振動センサ17が軸方
向移動自在に納められ、ケース30に固定した蓋29と高周
波振動センサ17との間には圧縮コイルばね31が間挿され
ている。32はセンサ用アンプ23に導かれる導線である。FIG. 4 shows a mounting example of the high-frequency vibration sensor, in which a high-frequency vibration sensor 17 is axially movable in a cylindrical hole 30a in a case 30 fixed to an end of a bearing 13 supporting an arm shaft 12 supporting a correction arm 15. A compression coil spring 31 is inserted between the lid 29 fixed to the case 30 and the high frequency vibration sensor 17. Reference numeral 32 is a conductor lead to the sensor amplifier 23.

次に上記構成における制御装置24を含めた作用を説明
する。第３図各図は上述した第１図の作用を説明する正
面図である。砥石修正中砥石2a,2bは回転している。砥
石2a,2bが加工物を研削している位置はエンコーダ27a,2
7bにより検出される。加工物の自動寸法計測等により砥
石修正開始信号Ｓが制御装置24に入力されると、第３図
（ａ）に二点鎖線で示した研削位置の両砥石2a,2bの現
在位置を各々記憶した後、左右送りモータコントローラ
25a,25b、左右送りモータドライバ26a,26bを介して左右
送りモータ9a,9bを駆動し、前回の砥石修正位置よりも
各々αだけ多い距離Ａの間砥石2a,2bを後退させ停止さ
せる。制御装置24は上記砥石2a,2bの後退確認後第３図
（ｂ）に示すようにドライバ28を介して減速機付ステツ
プモータ14を附勢して修正アーム15をアーム軸12を中心
に回転して両砥石2a,2b間にダイヤモンド16a,16bを進入
させ、修正アーム15を停止する。Next, the operation including the control device 24 in the above configuration will be described. FIG. 3 is a front view for explaining the operation of FIG. 1 described above. During the grindstone correction, the grindstones 2a and 2b are rotating. The position where the grindstones 2a, 2b are grinding the workpiece is the encoder 27a, 2
Detected by 7b. When the grindstone correction start signal S is input to the control device 24 by automatic dimension measurement of the workpiece, etc., the current positions of both grindstones 2a and 2b at the grinding positions shown by the two-dot chain line in FIG. After the left and right feed motor controller
The left and right feed motors 9a and 9b are driven via the 25a and 25b and the left and right feed motor drivers 26a and 26b, and the whetstones 2a and 2b are retracted and stopped for a distance A that is larger by α than the previous whetstone correction position. After confirming the retreat of the grindstones 2a, 2b, the controller 24 energizes the step motor 14 with a speed reducer via the driver 28 to rotate the correction arm 15 about the arm shaft 12 as shown in FIG. 3 (b). Then, the diamonds 16a and 16b are made to enter between the two whetstones 2a and 2b, and the correction arm 15 is stopped.

次に第３図（ｃ）に示すように制御装置24は左送りモ
ータコントローラ25a,左送りモータドライバ26aを介し
て左送りモータ9aを微速回転して微速送りで左砥石台4a
を右行して左砥石2aをダイヤモンド16aに近ずけ、第３
図（ｄ）に示すように左砥石2aとダイヤモンド16aが接
触すると超音波を発生する。この超音波を高周波振動セ
ンサ17が検出するとその信号はセンサ用アンプ23で増
幅、デジタル化され制御装置24に送られる。制御装置24
は直ちに左送りモータ9aを停止し、左砥石台4aの送りを
停止する。次に第３図（ｅ）に示すように左送りモータ
9aを逆転して予め定めておいた規定量Ｃだけ左砥石台4a
を後退し停止する。Next, as shown in FIG. 3 (c), the control device 24 rotates the left feed motor 9a at a slight speed through the left feed motor controller 25a and the left feed motor driver 26a to feed the left wheel head 4a at a fine speed.
To the right and move the left whetstone 2a closer to the diamond 16a.
As shown in FIG. 3D, when the left grindstone 2a and the diamond 16a come into contact with each other, ultrasonic waves are generated. When the high frequency vibration sensor 17 detects this ultrasonic wave, the signal is amplified by the sensor amplifier 23, digitized, and sent to the control device 24. Controller 24
Immediately stops the left feed motor 9a and stops the feed of the left grindstone base 4a. Next, as shown in FIG. 3 (e), the left feed motor
Reverse the 9a and move the left grindstone stand 4a by the specified amount C that is set in advance.
To retreat and stop.

第３図（ｆ）に示すように制御装置24は右送りモータ
コントローラ25b、右送りモータドライバ26bを介して右
送りモータ9bを微速回転して微速送りで右砥石台4bを左
行して右砥石2bをダイヤモンド16bに近ずけ、第３図
（ｇ）に示すように砥石2bとダイヤモンド16bが接触す
ると超音波を発生する。この超音波を高周波振動センサ
17が検出するとその信号はセンサ用アンプ23で増幅、デ
ジタル化され制御装置24に送られる。制御装置24は直ち
に右送りモータ9bを停止し、右砥石台4bの送りを停止す
る。次に第３図（ｈ）に示すように右送りモータ9bを逆
転して予め定めておいた規定量Ｄだけ右砥石台4bを後退
し停止する。As shown in FIG. 3 (f), the control device 24 rotates the right feed motor 9b at a slow speed through the right feed motor controller 25b and the right feed motor driver 26b to move leftwardly to the right grinding wheel head 4b at the fine speed feed and to the right. When the grindstone 2b is brought close to the diamond 16b and the grindstone 2b and the diamond 16b come into contact with each other as shown in FIG. 3 (g), ultrasonic waves are generated. This ultrasonic wave is a high frequency vibration sensor
When detected by 17, the signal is amplified and digitized by the sensor amplifier 23 and sent to the control device 24. The controller 24 immediately stops the right feed motor 9b and stops the feed of the right grinding wheel head 4b. Next, as shown in FIG. 3 (h), the right feed motor 9b is rotated in the reverse direction so that the right grindstone base 4b is moved backward by the predetermined amount D and stopped.

こゝで右砥石2bの停止後、制御装置24はドライバ28を
介して減速機付ステツプモータ14を逆転してダイヤモン
ド16a,16bを砥石面１外の待機位置に移動させ停止する
（第３図（ｉ））。After stopping the right grinding wheel 2b, the controller 24 reverses the step motor 14 with a speed reducer via the driver 28 to move the diamonds 16a, 16b to the standby position outside the grinding wheel surface 1 and stop (Fig. 3). (I)).

砥石2a,2bの各ダイヤモンド16a,16bの切込み量をＥと
すると、制御装置24は左送りモータコントローラ25a,左
送りモータドライバ26aを介して左送りモータ9aを駆動
し、左砥石台4aを左砥石2aとダイヤモンド16aの接触位
置より後退させた量Ｃに切込み量Ｅを加えた値Ｃ＋Ｅだ
け前進し停止させ、右送りモータコントローラ25b、右
送りモータドライバ26bを介して右送りモータ9bを駆動
し、右砥石台4bを右砥石2bとダイヤモンド16bの接触位
置より後退させた量Ｄに切込み量Ｅを加えた値Ｄ＋Ｅだ
け前進し停止させる（第３図（ｊ））。When the cut amount of each diamond 16a, 16b of the grindstones 2a, 2b is E, the control device 24 drives the left feed motor 9a via the left feed motor controller 25a and the left feed motor driver 26a to move the left grindstone 4a to the left. It advances and stops by a value C + E, which is the amount C retreated from the contact position between the grindstone 2a and the diamond 16a, plus the depth E, and drives the right feed motor 9b via the right feed motor controller 25b and the right feed motor driver 26b. , The right grinding wheel base 4b is moved forward from the contacting position of the right grinding wheel 2b and the diamond 16b by a value D + E obtained by adding the cutting amount E to the amount D (FIG. 3 (j)).

制御装置24はドライバ28を介して減速機付ステツプモ
ータ14を附勢して修正アーム15を回転して両砥石2a,2b
間に進入させると第３図（ｋ）に示すようにダイヤモン
ド16a,16bは砥石面１を切込量Ｅだけ切込み、砥石修正
が行われる。次に第３図（ｌ）に示すように減速機付ス
テツプモータ14を逆転して修正アーム15を回転し、ダイ
ヤモンド16a,16bを砥石2a,2bの対向面外に後退させる。
制御装置24は左右砥石台4a,4bの現在位置を記憶した後
左右送りモータコントローラ25a,25b、左右送りモータ
ドライバ26a,26bを介して左右送りモータ9a,9bを駆動
し、第３図（ｍ）に示すように左右砥石台4a,4bを砥石
修正開始時に研削位置から砥石台4a,4bを後退させた距
離Ａから、当初に砥石修正位置からの余分の後退量αを
減じた量Ａ−α＋Ｅ前進させ停止する。これによつて、
砥石台4a,4bは第３図（ａ）に示した後退位置から、Ａ
＋Ｅだけ前進した位置となる。即ち、砥石台4a,4bは前
回の加工物研削位置よりダイヤモンド16a,16b切込量だ
け前進した位置となる。The control device 24 energizes the step motor 14 with a speed reducer via the driver 28 to rotate the correction arm 15 to rotate both the whetstones 2a, 2b.
When the diamond 16a, 16b is inserted between them, as shown in FIG. 3 (k), the diamond 16a, 16b cuts the grindstone surface 1 by the cutting amount E to correct the grindstone. Next, as shown in FIG. 3 (l), the step motor 14 with a speed reducer is rotated in the reverse direction to rotate the correction arm 15 to retract the diamonds 16a, 16b to the outside of the facing surfaces of the grindstones 2a, 2b.
The control device 24 drives the left and right feed motors 9a and 9b via the left and right feed motor controllers 25a and 25b and the left and right feed motor drivers 26a and 26b after memorizing the current positions of the left and right grindstones 4a and 4b, and FIG. ), The amount A-at which the excess retreat amount α from the grindstone correction position is initially subtracted from the distance A at which the grindstone bases 4a and 4b are retracted from the grinding position at the start of grindstone correction α + E Move forward and stop. By this,
From the retracted position shown in FIG.
It is a position advanced by + E. That is, the grindstone bases 4a, 4b are at positions advanced by the cutting depths of the diamonds 16a, 16b from the previous workpiece grinding position.

以上の自動砥石修正により修正前のワーク研削状態の
砥石面１と修正後の第３図（ｍ）に示す砥石面１とが同
一位置なる為、試験研削を行つてワーク寸法を計測して
砥石位置の補正を行うことを要しないので砥石修正後の
時間損失がなくて連続研削サイクルを続行することがで
きる。By the above automatic grindstone correction, since the grindstone surface 1 before the work is ground and the grindstone surface 1 shown in FIG. 3 (m) after the repair are at the same position, the test grinding is performed to measure the work size and the grindstone. Since it is not necessary to correct the position, it is possible to continue the continuous grinding cycle without any time loss after the grindstone correction.

尚、ダイヤモンド16a,16bの破損その他制御に関する
不具合から砥石台4a,4bが規定量以上送られ、砥石面１
が修正アーム15に異常接近するとノズル18a,18bからの
噴失空気は制約され、空気供給管21a,21b内の空気圧が
上昇し、圧力スイツチ22a,22bが動作し、その信号を受
けて制御装置24は左右送りモータ9a,9bを直ちに停止さ
せた後に逆転させ、砥石2a,2bを第３図（ｂ）の位置に
後退させる。It should be noted that due to damage to the diamonds 16a, 16b and other control problems, the grinding wheel heads 4a, 4b were sent in excess of the specified amount, and the grinding wheel surface 1
Is abnormally close to the correction arm 15, the blown air from the nozzles 18a, 18b is restricted, the air pressure in the air supply pipes 21a, 21b rises, the pressure switches 22a, 22b operate, and the control device receives the signal. In the case of 24, the left and right feed motors 9a and 9b are immediately stopped and then reversely rotated to retract the grindstones 2a and 2b to the positions shown in FIG. 3 (b).

実施例は砥石台を送ることにより砥石を送る形式の砥
石軸装架の砥石台を有する両頭研削盤についてのべたが
砥石軸がクイル中に装架され、砥石台固定の両頭研削盤
についてはクイルを送ることにより砥石が送られるもの
である。The example is a solid for a double-headed grinder having a whetstone base of a whetstone shaft mount of a type for sending a whetstone by sending a whetstone, but a whetstone shaft is mounted in a quill, and a double head grinder with a fixed whetstone base is quill. The whetstone is sent by sending.

〔発明の効果〕〔The invention's effect〕

本発明は研削位置から砥石面を前回の砥石修正位置よ
りも後退させて、砥石修正工具を砥石面間に進入させ、
砥石を砥石修正工具に向つて進めて接触を高周波センサ
で検出して後退することを各砥石について行い、各砥石
の砥石修正工具への接触後の後退量に砥石の修正のため
の切込量を加えた量だけ両砥石を前進して砥石修正を行
い、砥石の送り装置を前回の研削面位置よりも切込量だ
け前進した位置に進めるようにしたため、両側の砥石面
が同時に正確に修正される両頭研削盤の砥石修正装置を
提供できた。The present invention retracts the whetstone surface from the grinding position from the previous whetstone correction position to allow the whetstone correction tool to enter between the whetstone surfaces,
For each grindstone, the grindstone is advanced toward the grindstone correction tool, and the contact is detected by the high-frequency sensor to retreat, and the retreat amount of each grindstone after contact with the grindstone correction tool is calculated as the cut amount for the grindstone correction. Both grindstones are advanced by the amount added to correct the grindstone, and the grindstone feeding device is advanced to the position advanced by the cutting amount from the previous grinding surface position, so that the grindstone surfaces on both sides are corrected accurately at the same time. It was possible to provide a whetstone correction device for a double-sided grinder.

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

第１図は本発明の実施例を模式的に示す正面図、第２図
は第１図のＡ−Ａ断面図、第３図（ａ），（ｂ），
（ｃ），（ｄ），（ｅ），（ｆ），（ｇ），（ｈ），
（ｉ），（ｊ），（ｋ），（ｌ），（ｍ）は第１図の制
御を示す正面図、第４図は高周波振動センサの取付部の
断面図である。 １……砥石面、2a,2b……砥石、３……砥石軸、4a,4b…
…砥石台、５……機台、6a,6b……送り装置、７……ナ
ツト、８……送りねじ、9a,9b……送りモータ、11……
砥石修正工具、12……アーム軸、13……軸受、14……ス
テツプモータ、15……修正アーム、16a,16b……単石ダ
イヤモンド、17……高周波振動センサ、18a,18b……ノ
ズル、19a,19b……通路、21a,21b……空気供給配管、22
a,22b……圧力スイツチ、23……センサ用アンプ、24…
…制御装置、25a……左送りモータコントローラ、25b…
…右送りモータコントローラ、26a……左送りモータド
ライバ、26b……右送りモータドライバ、27a,27b……エ
ンコーダ、28……ドライバ、29……蓋、30……ケース、
30a……円筒孔、31……圧縮コイルばね、32……導線。FIG. 1 is a front view schematically showing an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIGS. 3 (a), (b),
(C), (d), (e), (f), (g), (h),
(I), (j), (k), (l) and (m) are front views showing the control of FIG. 1, and FIG. 4 is a sectional view of a mounting portion of the high frequency vibration sensor. 1 ... Whetstone surface, 2a, 2b ... Whetstone, 3 ... Whetstone shaft, 4a, 4b ...
… Whetstone stand, 5 …… machine stand, 6a, 6b …… Feed device, 7 …… nut, 8 …… Feed screw, 9a, 9b …… Feed motor, 11 ……
Whetstone repair tool, 12 …… arm axis, 13 …… bearing, 14 …… step motor, 15 …… correction arm, 16a, 16b …… single stone diamond, 17 …… high frequency vibration sensor, 18a, 18b …… nozzle, 19a, 19b ...... passage, 21a, 21b ...... air supply piping, 22
a, 22b ... Pressure switch, 23 ... Sensor amplifier, 24 ...
… Controller, 25a… Left feed motor controller, 25b…
… Right feed motor controller, 26a …… Left feed motor driver, 26b …… Right feed motor driver, 27a, 27b …… Encoder, 28 …… Driver, 29 …… Lid, 30 …… Case,
30a: Cylindrical hole, 31: Compression coil spring, 32: Conductor.

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】端面を研削作用面とする砥石面をもつ砥石
を回転自在に備えた両頭の砥石台を該砥石面を対向さ
せ、各々の砥石を砥石軸の軸方向に移動させる送り装置
を備え、両砥石面間に進退して砥石面の修正を行う砥石
面修正用工具を備えた両頭研削盤の砥石修正装置におい
て、砥石修正装置に砥石面修正工具が砥石に接触した際
の振動を検出する高周波振動センサと、該高周波振動セ
ンサの信号を受けて、前記各砥石台の送りと砥石面修正
用工具の運動とを制御する制御装置を備えてなり、前記
制御装置は砥石面の修正時、研削位置の両砥石台の現在
位置を記憶した後、前回の砥石修正位置よりも多く後退
させ、両砥石間に砥石修正工具を進入し、何れか一方の
砥石台を砥石修正工具に近ずけ、該砥石台の砥石と砥石
修正工具との接触を高周波振動センサが検知した信号に
より該砥石台を停止すると共に後退させて停止させ、他
方の砥石台を砥石修正工具に向つて送り、該他方の砥石
台の砥石と砥石修正工具との接触を高周波振動センサが
検知した信号により該他方の砥石台を停止すると共に後
退させて停止させ、砥石修正工具を両砥石間より退出さ
せ、前記各砥石台の各砥石と砥石修正工具との接触後の
前記後退量に砥石の修正のための切込量を加えた量だけ
両砥石台を前進停止させ、次に砥石修正工具を前進し退
出させて砥石面を修正し、修正後の砥石台位置を記憶し
た後、各砥石台を前回の研削位置よりも砥石修正工具切
込量だけ前進した位置に進めるように砥石の送り装置及
び砥石修正装置の駆動装置を制御することを特徴とする
両頭研削盤の砥石修正装置。1. A feed device for moving two heads of a grindstone having a grindstone having an end surface as a grinding surface so as to be rotatable so that the grindstone surfaces face each other and each grindstone moves in the axial direction of the grindstone shaft. In a grindstone correction device of a double-headed grinder equipped with a grindstone surface correction tool that advances and retreats between both grindstone surfaces, the grindstone correction device causes vibration when the grindstone surface correction tool contacts the grindstone. A high frequency vibration sensor for detecting, and a control device for receiving the signal of the high frequency vibration sensor and controlling the feed of each of the grinding wheels and the movement of the tool for grinding wheel surface correction, wherein the control device corrects the grinding wheel surface. At this time, after memorizing the current positions of both grinding wheels of the grinding position, retract more than the previous grinding wheel correction position, enter the grinding wheel correction tool between both grinding wheels, and bring either one of the grinding wheel heads closer to the grinding wheel correction tool. First, contact the whetstone of the whetstone with the whetstone correction tool. The grinding wheel head is stopped and retracted and stopped by the signal detected by the frequency vibration sensor, the other grinding wheel head is sent toward the grinding wheel correction tool, and the contact between the grinding wheel of the other grinding wheel head and the grinding wheel correction tool is high frequency. The other grindstone is stopped by the signal detected by the vibration sensor and is retracted and stopped, and the grindstone correcting tool is withdrawn from between the two grindstones, and each grindstone of each grindstone is contacted with the grindstone correcting tool. Both wheels are moved forward and stopped by the amount of retreat plus the amount of cutting for grinding wheel correction, then the wheel correction tool is advanced and retracted to correct the wheel surface, and the corrected wheel head position is stored. After that, each of the heads of the double-sided grinder is characterized by controlling the feed device of the grindstone and the drive device of the grindstone correcting device so as to advance the grindstone head to a position advanced by the grindstone correcting tool cutting amount from the previous grinding position. Whetstone repair device.