JP2565968B2 - Forming method of grinding wheel in thread groove grinding - Google Patents
Forming method of grinding wheel in thread groove grindingInfo
- Publication number
- JP2565968B2 JP2565968B2 JP63044641A JP4464188A JP2565968B2 JP 2565968 B2 JP2565968 B2 JP 2565968B2 JP 63044641 A JP63044641 A JP 63044641A JP 4464188 A JP4464188 A JP 4464188A JP 2565968 B2 JP2565968 B2 JP 2565968B2
- Authority
- JP
- Japan
- Prior art keywords
- dresser
- grinding wheel
- tip
- grinding
- reference point
- 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.)
- Expired - Fee Related
Links
Landscapes
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、ネジ溝のリード角に対し砥石軸を傾斜させ
て研削加工を行う砥石車をNC制御によって制御して成形
するネジ溝研削加工に於ける砥石車の成形方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a thread groove grinding process for controlling a NC wheel to form a grinding wheel in which a grinding wheel shaft is inclined with respect to a lead angle of a screw groove for grinding. To a method for forming a grinding wheel in a car.
（従来の技術） 従来、被加工体、例えばボールネジのネジ溝をこれの
有するリード角に対して砥石軸を傾斜させた砥石車で研
削加工をNC制御によって行う場合、該砥石車の砥石形状
は砥石軸を傾斜させているので該ネジ溝の直角断面形状
と一致せず複雑であり、該砥石車は該研削加工の経過に
伴って外径及び砥石形状が損耗し微小に変化して高精度
に被加工体を研削加工することができなくなる。このた
め、この微小変化に対応して成形し直し該砥石車を所定
の砥石形状とする必要があり、この種の成形方法には次
のような方法が考えられる。(Prior Art) Conventionally, when grinding is performed by NC control with a grinding wheel in which a grindstone of a ball screw has a thread groove inclined with respect to a lead angle of the object, the grindstone shape of the grinding wheel is Since the grindstone shaft is tilted, it does not match the right-angled cross-sectional shape of the screw groove and is complicated, and the grinding wheel wears the outer diameter and the grindstone shape with the progress of the grinding process and changes minutely, resulting in high accuracy. In addition, the workpiece cannot be ground. For this reason, it is necessary to re-form the grinding wheel in accordance with this minute change so that the grinding wheel has a predetermined grinding wheel shape, and the following method can be considered as a molding method of this type.
これは先ず、該砥石車を成形する旋回自在なドレッサ
を旋回中心にセットした位置決めピンに当接させ該ドレ
ッサを所定旋回半径の位置にセットする。その後、NC制
御により該砥石車を該ドレッサに当接させ左右及び前後
方向に移動しつつ該ドレッサを旋回させることによって
該砥石形状を成形する。このとき、該ドレッサ先端部も
砥石車を成形することによって微小ながら摩耗し該砥石
形状の成形に悪影響を及ぼす。この悪影響を排除して所
定砥石形状の砥石車となるように成形するため該砥石車
の許容損耗量に対応する被加工体の研削回数を設定す
る。この所定研削回数毎に該ドレッサの旋回中心上の対
向位置にセットした前記位置決めピンに該ドレッサを当
接するように移動調整することによって該ドレッサの摩
耗により大きくなった旋回半径を所定旋回半径に補正し
て該砥石車を成形加工する。First, a rotatable dresser for forming the grinding wheel is brought into contact with a positioning pin which is set at the center of rotation, and the dresser is set at a position of a predetermined turning radius. Thereafter, the grinding wheel shape is formed by bringing the grinding wheel into contact with the dresser by NC control and rotating the dresser while moving in the left-right and front-rear directions. At this time, the tip of the dresser is also slightly worn by molding the grinding wheel, which adversely affects the molding of the grinding wheel shape. In order to eliminate this adverse effect and form a grinding wheel having a predetermined grinding wheel shape, the number of times of grinding the workpiece is set corresponding to the allowable wear amount of the grinding wheel. The turning radius increased due to the wear of the dresser is corrected to a predetermined turning radius by adjusting the movement of the dresser so that it comes into contact with the positioning pin set at the opposite position on the turning center of the dresser every predetermined number of times of grinding. Then, the grinding wheel is formed.
従って、この種の方法では、該ドレッサを反復旋回し
ながら前記位置決めピンを該ドレッサの旋回中心上の対
向位置にセットし、該ドレッサを移動し該位置決めピン
に当接させるようにして前記旋回半径を補正しなければ
ならず作業が煩雑となると共に、自動化を行うには装置
が複雑となり困難である。また、砥石車を成形する毎に
この補正作業を繰り返して行う必要があり作業が更に煩
雑となる。更に、該位置決めピンのセットをその都度行
うため各回毎に該位置決めピンの取付けに誤差を生じて
均一な砥石形状を得られないことがあると共に、この取
付誤差を減少するため該位置決めピンの取付けを慎重に
行うと砥石車の成形加工の作業効率が低下し被加工体の
研削加工に要する時間を短縮できず生産性を向上するこ
とが困難であるという問題点がある。Therefore, in this type of method, the positioning pin is set at an opposing position on the center of rotation of the dresser while repeatedly rotating the dresser, and the dresser is moved so as to abut the positioning pin. Must be corrected, and the work becomes complicated, and the device is complicated and difficult to perform automation. Further, this correction work needs to be repeated every time the grinding wheel is formed, which further complicates the work. Further, since the positioning pin is set each time, an error may occur in the mounting of the positioning pin each time, and a uniform grindstone shape may not be obtained, and in order to reduce this mounting error, the mounting of the positioning pin However, there is a problem in that the work efficiency of the grinding wheel forming process decreases, the time required for grinding the workpiece cannot be shortened, and it is difficult to improve productivity.
（本発明が解決しようとする課題） 本発明は、かかる従来の不都合を解消し、ドレッサの
旋回半径を補正せず該ドレッサ先端部の摩耗量を検出
し、NC制御により砥石車位置を補正しながら該ドレッサ
を所定旋回半径で旋回させ該砥石車を成形することによ
って該砥石車の成形加工を容易に自動化することができ
ると共に、被加工体のネジ溝を高精度に研削加工する該
砥石車を成形する時間を短縮することができるネジ溝研
削加工に於ける砥石車の成形方法を提供することを目的
とする。(Problems to be solved by the present invention) The present invention eliminates such conventional inconvenience, detects the wear amount of the dresser tip without correcting the turning radius of the dresser, and corrects the grinding wheel position by NC control. While forming the grinding wheel by turning the dresser with a predetermined turning radius, the grinding wheel can be easily formed automatically and the thread groove of the workpiece can be ground with high precision. An object of the present invention is to provide a method for forming a grinding wheel in a thread groove grinding process that can reduce the time for forming a wheel.
また、被加工体の砥石車による研削加工と該砥石車の
成形加工を前記NC制御により前記ドレッサの摩耗量に対
応させて制御し、これらの加工を連続的に行うことによ
って一連の研削加工に要する時間を短縮することができ
るネジ溝研削加工に於ける砥石車の成形方法を提供する
ことを目的とする。Further, the grinding process of the workpiece with the grinding wheel and the forming process of the grinding wheel are controlled in accordance with the wear amount of the dresser by the NC control, and a series of grinding processes is performed by continuously performing these processes. An object of the present invention is to provide a method for forming a grinding wheel in thread groove grinding that can reduce the time required.
（課題を解決するための手段） かかる目的を達成するために、本発明のネジ溝研削加
工に於ける砥石車の成形方法は、被加工体のネジ溝のリ
ード角に対し砥石軸を傾斜させてネジ溝の研削加工を行
う砥石車をドレッサの先端部に当接させ、該ドレッサ先
端部の前方に設定した所定の旋回中心で該ドレッサを旋
回させつつ、該砥石車が該ドレッサに当接するように該
ドレッサ先端部の摩耗量に対応してNC制御によって該砥
石車の位置を補正して該砥石車を所定の砥石形状に成形
する方法であって、該ドレッサ先端部からこれの同軸後
方に設けた被検出部までの距離ｌを測定し、該ドレッサ
軸線上で該被検出部の旋回半径より遠方に基準点を設定
し、該ドレッサ先端部が該基準点と対向する位置にある
ときの該基準点から該ドレッサ先端部までの距離L1を測
定し、該ドレッサを前記位置から180°旋回させたとき
の該基準点から該被検出部までの距離L2を測定し、該ド
レッサ先端部の旋回半径ＲをＲ＝（L1−L2−ｌ）/2から
検出し、該ドレッサにより砥石車を研削した後、該ドレ
ッサ先端部が該基準点と対向する位置にあるときの該基
準点から摩耗した該ドレッサ先端部までの距離L1′を測
定し、該ドレッサ先端部の摩耗量ａをａ＝L1′−L1から
検出し、該ドレッサ先端部の実施回半径Ｒ′をＲ′＝Ｒ
＋ａから検出し、この実施回半径Ｒ′に対応して該砥石
車の位置を補正することを特徴とする。(Means for Solving the Problem) In order to achieve such an object, a method for forming a grinding wheel in thread groove grinding according to the present invention includes a method of tilting a wheel axis with respect to a lead angle of a thread groove of a workpiece. A grinding wheel that grinds a thread groove by abutting on the tip of the dresser, and the grinding wheel abuts on the dresser while turning the dresser at a predetermined turning center set in front of the dresser tip. As described above, a method of correcting the position of the grinding wheel by NC control in accordance with the wear amount of the dresser tip to form the grinding wheel into a predetermined grindstone shape, which is coaxially rearward from the dresser tip. When a distance l to a detected portion provided on the dresser is measured and a reference point is set on the dresser axis farther than the turning radius of the detected portion, and the tip end of the dresser is at a position facing the reference point. From the reference point to the dresser tip The distance L1 is measured, the distance L2 from the reference point to the detected portion when the dresser is turned by 180 ° from the position is measured, and the turning radius R of the dresser tip is R = (L1-L2 -L) / 2, after grinding the grinding wheel by the dresser, the distance L1 'from the reference point to the worn dresser tip when the dresser tip is in a position facing the reference point Is measured, the wear amount a of the dresser tip is detected from a = L1'-L1, and the actual turning radius R'of the dresser tip is R '= R.
It is characterized in that it is detected from + a and the position of the grinding wheel is corrected corresponding to this execution radius R '.
また、前記発明の砥石車の成形方法によって砥石車を
成形した後、該砥石車を研削位置に移動し、ドレッサ先
端部の前記摩耗量に対応させて該砥石車の位置と送り量
を補正しつつ被加工体の研削加工を行い、該砥石車が損
耗して被加工体の加工精度が低下すると該砥石車を該ド
レッサ先端部の摩耗量に対応する砥石車成形位置に移動
して所定の砥石形状に成形し、該砥石車の成形加工と被
加工体の研削加工を連続的に行うことを特徴とする。In addition, after the grinding wheel is molded by the grinding wheel molding method of the invention, the grinding wheel is moved to a grinding position, and the position and the feed amount of the grinding wheel are corrected corresponding to the wear amount of the dresser tip. While grinding the work piece while the grinding wheel is worn and the processing accuracy of the work piece deteriorates, the grinding wheel is moved to a grinding wheel forming position corresponding to the wear amount of the dresser tip portion and a predetermined position is set. It is characterized in that it is formed into a grindstone shape, and the forming process of the grinding wheel and the grinding process of the workpiece are continuously performed.
（作用） 本発明の砥石車の成形方法は、上記の工程によれば、
所定の砥石車成形位置で前記ドレッサ先端部の摩耗量を
検出する。次に、この摩耗量に対応して該砥石車位置を
NC制御によって前後及び左右方向に補正し、前記一定の
旋回半径で旋回する該ドレッサに前記砥石車を当接させ
るように制御して該砥石車を所定の砥石形状に成形す
る。(Operation) The method for forming a grinding wheel according to the present invention comprises:
The wear amount of the dresser tip portion is detected at a predetermined grinding wheel forming position. Next, the position of the grinding wheel is adjusted according to this wear amount.
The NC wheel is corrected in the front-rear direction and the left-right direction, and the grinding wheel is controlled to be brought into contact with the dresser that turns with the constant turning radius, so that the grinding wheel is formed into a predetermined grinding wheel shape.
また、前記発明の砥石車の成形方法において、前記ド
レッサ先端部から前記被検出部までの距離ｌを測定す
る。その後、前記基準点から該ドレッサ先端部までの距
離L1を測定する。つぎに該ドレッサを180°旋回させて
該基準点から該被検出部までの距離L2を測定し、測定し
た３箇所の距離L1,L2,lから加工前の旋回半径Ｒを検出
しておく。その後、被加工体に研削加工を行い砥石車の
損耗による変形を成形加工することによって該ドレッサ
先端部に摩耗を生じる。この摩耗によって増大する該基
準点から該ドレッサ先端部までの距離L1′を測定し、該
ドレッサ先端部の摩耗量ａをL1′とL1から検出すると共
に、加工前の旋回半径Ｒにこの摩耗量ａを加算して該ド
レッサ先端部の実施回半径Ｒ′を検出し、この実施回半
径Ｒ′に対応させて該砥石車位置を補正する。Further, in the grinding wheel forming method of the present invention, a distance l from the dresser tip portion to the detected portion is measured. Then, the distance L1 from the reference point to the dresser tip is measured. Next, the dresser is turned 180 ° to measure the distance L2 from the reference point to the detected portion, and the turning radius R before processing is detected from the measured distances L1, L2, l. After that, the workpiece is ground and the deformation due to the wear of the grinding wheel is formed to wear the dresser tip. The distance L1 'from the reference point to the dresser tip portion, which increases due to this wear, is measured, and the wear amount a of the dresser tip portion is detected from L1' and L1. a is added to detect the working radius R'of the dresser tip, and the grinding wheel position is corrected in correspondence with the working radius R '.
また、前記発明の砥石車の成形方法によって砥石車を
成形した後、該砥石車を研削位置に移動し、ドレッサ先
端部の前記磨耗量及び砥石車の損耗量に対応させて該砥
石車の位置と送り量を補正し被加工体のネジ溝が所定の
形状となるように研削加工を行う。研削加工により該砥
石車が損耗して被加工体の加工精度が低下すると該砥石
車を該ドレッサ先端部の摩耗量に対応する砥石車成形位
置に移動して前記発明の砥石車の成形方法によって所定
の砥石形状に成形加工する。これらの該砥石車の成形加
工と被加工体の研削加工を連続的に順次繰り返し行う。Further, after the grinding wheel is molded by the method for molding a grinding wheel of the invention, the grinding wheel is moved to a grinding position, and the position of the grinding wheel is made to correspond to the wear amount of the dresser tip and the wear amount of the grinding wheel. Then, the feed amount is corrected and grinding is performed so that the thread groove of the workpiece has a predetermined shape. When the grinding wheel is worn due to grinding and the processing accuracy of the workpiece is lowered, the grinding wheel is moved to the grinding wheel forming position corresponding to the wear amount of the dresser tip portion, and the grinding wheel forming method according to the invention is used. It is formed into a predetermined grindstone shape. The forming process of the grinding wheel and the grinding process of the workpiece are continuously and sequentially repeated.
（実施例） 本発明を実施する装置を示す第１図乃至第３図を用い
て以下詳細に説明する。(Example) A detailed description will be given below with reference to FIGS. 1 to 3 showing an apparatus for carrying out the present invention.
該装置は被加工体であるボールネジのナットＸのネジ
溝を内面研削加工する３軸NC制御研削盤１である。これ
は、第１図示のように該ナットＸのネジ溝のリード角α
に対して水平方向に所定角度θだけ傾斜させた砥石軸２
に砥石車３を備え、縦送りテーブル４及び横送りテーブ
ル５を介して図上左右及び上下方向に移動自在とする砥
石台６を設ける。砥石台６の対向位置に該ナットＸを保
持し、該ナットＸのリード角α及び砥石車３の縦送りに
合わせて所定の回転数で回転させる主軸台７を設け、主
軸台７の近傍に砥石車３を成形するドレッサ８を保持し
旋回させるドレッサ旋回台９を並設する。ドレッサ旋回
台９に対向しドレッサ８の摩耗量を左右の縦送方向に移
動して測定するセンサー部10を備え前記横送りテーブル
５のドレッサ旋回台９側で前後の横送方向に移動自在と
するマグネスケール11を設ける。マグネスケール11から
測定値の入力を受けて前記砥石台６及びドレッサ旋回台
９とを連結して制御するNC制御装置（図示せず）を設け
る。The apparatus is a three-axis NC control grinder 1 for internally grinding the thread groove of a nut X of a ball screw which is a workpiece. This is the lead angle α of the thread groove of the nut X as shown in the first illustration.
Grindstone axis 2 tilted horizontally by a predetermined angle θ
Further, a grindstone 3 is provided, and a grindstone base 6 is provided which is movable in the left-right and up-down directions in the drawing via a vertical feed table 4 and a horizontal feed table 5. A headstock 7 that holds the nut X at a position facing the grinding wheel base 6 and rotates at a predetermined rotation number according to the lead angle α of the nut X and the vertical feed of the grinding wheel 3 is provided in the vicinity of the headstock 7. A dresser swivel base 9 for holding and swiveling the dresser 8 for forming the grinding wheel 3 is provided in parallel. A sensor unit 10 facing the dresser swivel base 9 to measure the amount of wear of the dresser 8 by moving it in the left and right vertical feed directions is provided with a sensor unit 10 which is movable in the front and rear lateral feed directions on the dresser swivel base 9 side of the horizontal feed table 5. A magnetic scale 11 is provided. An NC controller (not shown) is provided which receives a measurement value input from the magnescale 11 and connects the grindstone base 6 and the dresser swivel base 9 to control them.
ドレッサ旋回台９は、第２図示の説明図のように、前
記ドレッサ８を保持し制御装置からの入力信号を受けて
ドレッサ８を旋回中心線Ｏ線を中心として水平に旋回さ
せる旋回保持部12を設け、ドレッサ８の同軸後方に被検
出部であるドレッサ旋回半径測定用ボール13を設ける。The dresser swivel base 9 holds the dresser 8 and receives an input signal from the control device to swivel the dresser 8 horizontally around the swivel center line O, as shown in the second diagram. And a ball 13 for measuring a dresser turning radius, which is a detected portion, is provided coaxially behind the dresser 8.
次に、前記の構成からなる前記装置の作動に従って本
発明の実施方法について説明する。Next, a method for carrying out the present invention will be described according to the operation of the apparatus having the above-mentioned configuration.
先ず、第２図示のように、ドレッサ８は旋回半径Ｒを
有して旋回保持部12に保持され、旋回保持部12はマグネ
スケール11の軸に平行でドレッサ先端部がセンサー部10
と対向するL1測定位置に初期設定される。First, as shown in FIG. 2, the dresser 8 has a turning radius R and is held by the turning holding part 12, the turning holding part 12 is parallel to the axis of the magnescale 11, and the tip end of the dresser is the sensor part 10.
Initially set to the L1 measurement position opposite to.
次に、マグネスケール11をドレッサ８の旋回中心線Ｏ
線の対向位置まで移動する。この位置でマグネスケール
11のセンサー部10を突出させてドレッサ８の先端部に当
接させ基準点からL1測定位置のドレッサ先端部までの縦
送距離L1を測定する。測定後に、センサー部10を収容
し、ドレッサ旋回台９の旋回保持部12をL1測定位置から
旋回中心線Ｏ線回りに180°旋回させてドレッサ８の該
測定用ボール13がマグネスケール11のセンサー部10と対
向するL2測定位置（第２図仮想線示）に保持する。再
び、マグネスケール11のセンサー部10を突出させ該測定
用ボール13に当接させることにより基準点から旋回後の
L2測定位置の該測定用ボール13までの縦送距離L2を測定
する。Next, attach the magnescale 11 to the turning center line O of the dresser 8.
Move to the opposite position of the line. Magnescale at this position
The sensor unit 10 of 11 is projected and brought into contact with the tip of the dresser 8 to measure the vertical feed distance L1 from the reference point to the dresser tip at the L1 measurement position. After the measurement, the sensor unit 10 is housed, the swivel holding unit 12 of the dresser swivel base 9 is swung 180 ° around the swivel center line O line from the L1 measurement position, and the measuring ball 13 of the dresser 8 is a sensor of the magnescale 11. It is held at the L2 measurement position (shown in phantom in FIG. 2) facing the section 10. Once again, the sensor unit 10 of the magnescale 11 is projected and brought into contact with the measuring ball 13 so that after the turning from the reference point.
The vertical feeding distance L2 to the measuring ball 13 at the L2 measuring position is measured.
ドレッサ先端部から該測定用ボール13までの距離ｌを
予め測定し前記NC制御装置に入力しておき、各測定値L
1,L2を測定後前記NC制御装置に入力し、設定初期におけ
るドレッサ先端部の旋回半径ＲをＲ＝（L1−L2−ｌ）/2
で表される式から求める。The distance l from the tip of the dresser to the measuring ball 13 is measured in advance and input to the NC controller, and each measured value L
Input 1, L2 to the NC controller after measurement, and set the turning radius R of the dresser tip at the initial setting to R = (L1-L2-l) / 2
It is calculated from the formula
砥石車３は被加工体Ｘの研削加工によって砥石形状が
変形し被加工体Ｘのネジ溝を所定の形状で研削できなく
なる。この限度を被加工体の研削回数から設定し、同一
砥石車３による被加工体Ｘの研削加工が所定研削回数に
達すると砥石車３をドレッサ８によって成形加工する。In the grinding wheel 3, the shape of the grindstone is deformed by the grinding of the workpiece X, and the thread groove of the workpiece X cannot be ground in a predetermined shape. This limit is set based on the number of grinding times of the workpiece, and when the grinding of the workpiece X by the same grinding wheel 3 reaches a predetermined number of grindings, the grinding wheel 3 is shaped by the dresser 8.
砥石車３を成形することによってドレッサ先端部も摩
耗するので、第３図示のように前記基準点から摩耗した
ドレッサ先端部までの縦送距離L1′を測定する。前記L
2,lは旋回保持部12の旋回半径Ｌを変更しない限り一定
であるので摩耗によって増大したL1′を測定し前記制御
装置に入力してドレッサ先端部の摩耗量ａをａ＝L1′−
L1から求める。この摩耗量ａからドレッサ先端部の実施
回半径Ｒ′をＲ′＝Ｒ＋ａから求め前記制御部へ入力す
る。Since the dresser tip is also worn by molding the grinding wheel 3, the vertical feed distance L1 'from the reference point to the worn dresser tip is measured as shown in FIG. The L
Since 2, l is constant as long as the turning radius L of the turning holding portion 12 is not changed, L1 'increased by wear is measured and input to the control device and the wear amount a of the tip of the dresser is a = L1'-
Calculate from L1. From this wear amount a, the actual turning radius R'of the dresser tip is obtained from R '= R + a and input to the control unit.
実施回半径Ｒ′を検出した後に、マグネスケール11を
当初の位置まで移動すると共に、旋回保持部12をL1測定
位置に復帰させる。その後、砥石台６の砥石車３を回転
させ、ドレッサ８先端部に当接させる。砥石台６はNC制
御装置により実施回半径Ｒ′と設定旋回半径Ｒとの差即
ちドレッサ先端部の摩耗量に応じて制御され、砥石台６
は縦送りテーブル４と横送りテーブル５上を左右及び前
後方向に移動して砥石車３位置を補正し、ドレッサ旋回
台９はこの砥石車３位置の補正に対応しドレッサ８を所
定の旋回開始位置から旋回終了位置まで旋回させる。こ
のように砥石車位置をドレッサ先端部の摩耗量に対応し
て補正しつつドレッサ８を旋回させることによって砥石
車３を所定の砥石形状に成形する。After detecting the execution radius R ', the magnet scale 11 is moved to the initial position and the swivel holder 12 is returned to the L1 measurement position. After that, the grinding wheel 3 of the grinding wheel base 6 is rotated and brought into contact with the tip of the dresser 8. The grinding wheel head 6 is controlled by the NC controller according to the difference between the execution radius R ′ and the set turning radius R, that is, the wear amount of the dresser tip.
Moves left and right and front and back on the vertical feed table 4 and the horizontal feed table 5 to correct the position of the grinding wheel 3, and the dresser swivel base 9 responds to the correction of the position of the grinding wheel 3 to start turning the dresser 8 in a predetermined manner. Turn from the position to the turn end position. In this way, the grinding wheel 3 is formed into a predetermined grinding wheel shape by turning the dresser 8 while correcting the grinding wheel position in accordance with the wear amount of the dresser tip portion.
砥石車３の成形終了後、砥石台６を主軸台７にセット
したボールネジＸに対向する研削位置に移動する。この
とき、前記ドレッサ先端部の磨耗及び砥石車の損耗に伴
って変化する砥石車３の研削位置を、所定の研削プログ
ラムに入力することによって砥石車３の縦送り及び横送
りを補正してボールネジＸのネジ溝を所定の形状に研削
する。After the grinding wheel 3 has been molded, the grinding wheel base 6 is moved to a grinding position facing the ball screw X set on the headstock 7. At this time, the grinding position of the grinding wheel 3 which changes due to the wear of the dresser tip portion and the wear of the grinding wheel 3 is input to a predetermined grinding program to correct the vertical feed and the lateral feed of the grinding wheel 3 to correct the ball screw. The X thread groove is ground into a predetermined shape.
従って、基準点を一定としドレッサ８の位置をマグネ
スケール11によって検出し、摩耗に対応して実施回半径
Ｒ′即ち摩耗量ａによって砥石車位置を補正して砥石車
３を成形するのでドレッサ８の初期設定は概略位置への
設定で良く、従来のように煩雑な作業とならずに均一な
砥石形状を容易に得ることができ成形効率を向上でき
る。Therefore, with the reference point kept constant, the position of the dresser 8 is detected by the magnescale 11, and the grinding wheel position is corrected in accordance with the wear radius R ', that is, the wear amount a, to form the grinding wheel 3, so that the dresser 8 is formed. The initial setting can be set to a rough position, and a uniform grindstone shape can be easily obtained without complicated work as in the conventional case, and the molding efficiency can be improved.
また、検出した摩耗量ａを表示することによってドレ
ッサ８の交換時期を容易に把握することができるので品
質の向上を図ることができる。Further, by displaying the detected wear amount a, it is possible to easily grasp the replacement time of the dresser 8, so that the quality can be improved.
（効果） 本発明は、前記の説明から明らかなように、ドレッサ
の旋回半径を補正せずドレッサ先端部の摩耗量を検出
し、NC制御により砥石車位置を前後及び左右方向に補正
しながら当接し、該ドレッサを摩耗量に関わりなく所定
旋回半径で旋回させ該砥石車を成形することによって該
砥石車の成形加工を容易に自動化することができると共
に、被加工体のネジ溝を高精度に研削加工する該砥石車
を成形する時間を短縮することができるネジ溝研削加工
に於ける砥石車の成形方法を提供できる。(Effect) As is apparent from the above description, the present invention detects the wear amount of the dresser tip without correcting the turning radius of the dresser and corrects the grinding wheel position in the front-back and left-right directions by NC control. The grinding wheel can be formed easily by automatically contacting the dresser by turning the dresser at a predetermined turning radius regardless of the wear amount, and the thread groove of the work piece can be highly accurately formed. It is possible to provide a grinding wheel forming method in thread groove grinding, which can shorten the time for forming the grinding wheel to be ground.
また、ドレッサ先端部の摩耗量を基準点からドレッサ
先端部までの距離とこれを旋回させドレッサ先端部の同
軸後方に設けた被検出部までの距離を測定することによ
り導くようにしたのでドレッサの初期設定位置は概略で
良く取付作業が容易であり、初期設定後は基準点からド
レッサ先端部までの距離だけを測定することによりドレ
ッサ先端部の摩耗量を容易に検出することができる。In addition, the wear amount of the dresser tip is guided by measuring the distance from the reference point to the dresser tip and measuring the distance to the detected part provided coaxially behind the dresser tip by turning it. The initial setting position is good and the mounting work is easy, and after the initial setting, the wear amount of the dresser tip can be easily detected by measuring only the distance from the reference point to the dresser tip.
更に、被加工体の研削加工と該砥石車の成形加工をNC
制御により前記ドレッサの摩耗量及び砥石車の損耗量に
対応させて制御し、これらの加工を連続的に行うことに
よって一連の研削加工に要する時間を短縮することがで
きる。In addition, the grinding of the work piece and the forming of the grinding wheel are NC
By controlling the amount of wear of the dresser and the amount of wear of the grinding wheel in accordance with the control, and performing these processes continuously, the time required for a series of grinding processes can be shortened.
第１図は本発明の実施の一例である装置を示す説明図、
第２図は該装置の部分的説明図、第３図は同じくドレッ
サ先端部摩耗後の部分的説明図を示す。 ２……砥石軸、３……砥石車 ８……ドレッサ、13……被検出部 α……ネジ溝のリード角 θ……砥石軸の傾斜角 Ｘ……被加工体 Ｌ……旋回半径 L1……ドレッサ先端部までの縦送距離 L2……ドレッサ被検出部までの縦送距離 Ｒ……ドレッサ初期設定の旋回半径 Ｒ′……ドレッサの実施回半径 ｌ……ドレッサ先端部と被検出部との距離 ａ……ドレッサ先端部の摩耗量FIG. 1 is an explanatory view showing an apparatus which is an example of the embodiment of the present invention,
FIG. 2 is a partial explanatory view of the apparatus, and FIG. 3 is a partial explanatory view of the dresser tip portion after wear. 2 …… Whetstone axis, 3 …… Whetstone wheel 8 …… Dresser, 13 …… Detected part α …… Lead angle of thread groove θ …… Inclination angle of grindstone axis X …… Workpiece L …… Turning radius L1 ...... Longitudinal feed distance to the dresser tip L2 …… Vertical feed distance to the dresser detected area R …… Turning radius of the dresser default R ′ …… Dresser execution radius l …… Dresser tip and detected area Distance a ... Wear amount of dresser tip
───────────────────────────────────────────────────── フロントページの続き (72)発明者 西原 幸弘 埼玉県狭山市新狭山１丁目10番地１ ホ ンダエンジニアリング株式会社内 (56)参考文献 特開 昭62−228370（ＪＰ，Ａ) 特開 昭61−173858（ＪＰ，Ａ) 実開 昭58−4352（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yukihiro Nishihara 1-10-1 Shin-Sayama, Sayama-shi, Saitama Honda Engineering Co., Ltd. (56) References JP-A-62-228370 (JP, A) JP-A-SHO 61-173858 (JP, A) Actual development Sho 58-4352 (JP, U)
Claims (2)
を傾斜させてネジ溝の研削加工を行う砥石車をドレッサ
の先端部に当接させ、該ドレッサ先端部の前方に設定し
た所定の旋回中心で該ドレッサを旋回させつつ、該砥石
車が該ドレッサに当接するように該ドレッサ先端部の摩
耗量に対応してNC制御によって該砥石車の位置を補正し
て該砥石車を所定の砥石形状に成形する方法であって、 該ドレッサ先端部からこれの同軸後方に設けた被検出部
までの距離ｌを測定し、該ドレッサ軸線上で該被検出部
の旋回半径より遠方に基準点を設定し、該ドレッサ先端
部が該基準点と対向する位置にあるときの該基準点から
該ドレッサ先端部までの距離L1を測定し、該ドレッサを
前記位置から180°旋回させたときの該基準点から該被
検出部までの距離L2を測定し、該ドレッサ先端部の旋回
半径ＲをＲ＝（L1−L2−ｌ）/2から検出し、該ドレッサ
により砥石車を研削した後、該ドレッサ先端部が該基準
点と対向する位置にあるときの該基準点から摩耗した該
ドレッサ先端部までの距離L1′を測定し、該ドレッサ先
端部の摩耗量ａをａ＝L1′−L1から検出し、該ドレッサ
先端部の実施回半径Ｒ′をＲ′＝Ｒ＋ａから検出し、こ
の実施回半径Ｒ′に対応して該砥石車の位置を補正する
ことを特徴するネジ溝研削加工に於ける砥石車の成形方
法。1. A grinding wheel that grinds a thread groove by inclining a grindstone shaft with respect to a lead angle of the thread groove of a workpiece is brought into contact with the tip of the dresser and set in front of the tip of the dresser. While turning the dresser around a predetermined turning center, the position of the grinding wheel is corrected by NC control corresponding to the wear amount of the dresser tip so that the grinding wheel comes into contact with the dresser. A method of forming into a predetermined grindstone shape, wherein a distance l from the dresser tip portion to a detected portion provided coaxially behind the dresser is measured, and the distance l is set on the dresser axis farther than the turning radius of the detected portion. When a reference point is set, the distance L1 from the reference point to the dresser tip is measured when the dresser tip is at a position facing the reference point, and the dresser is turned 180 ° from the position. The distance L2 from the reference point to the detected part After determining the turning radius R of the dresser tip from R = (L1-L2-l) / 2 and grinding the grinding wheel by the dresser, the dresser tip is located at a position facing the reference point. The distance L1 'from the reference point to the worn tip of the dresser at a given time is measured, the wear amount a of the tip of the dresser is detected from a = L1'-L1, and the working radius R of the tip of the dresser is measured. ′ Is detected from R ′ = R + a, and the position of the grinding wheel is corrected according to the radius of gyration R ′. A method for forming a grinding wheel in thread groove grinding.
って砥石車を成形した後、該砥石車を研削位置に移動
し、ドレッサ先端部の前記摩耗量に対応させて該砥石車
の位置と送り量を補正しつつ被加工体の研削加工を行
い、該砥石車が摩耗して被加工体の加工精度が低下する
と該砥石車を該ドレッサ先端部の摩耗量に対応する砥石
車成形位置に移動して所定の砥石形状に成形し、該砥石
車の成形加工と被加工体の研削加工を連続的に行うこと
を特徴とするネジ溝研削加工に於ける砥石車の成形方
法。2. After the grinding wheel is molded by the grinding wheel molding method according to claim 1, the grinding wheel is moved to a grinding position, and the position of the grinding wheel is adjusted corresponding to the wear amount of the dresser tip. When the grinding wheel is worn while the grinding wheel is worn and the processing accuracy of the workpiece is lowered, the grinding wheel is moved to the grinding wheel forming position corresponding to the wear amount of the dresser tip. A method for forming a grinding wheel in thread groove grinding, which comprises moving to a predetermined shape of a grinding wheel, and continuously performing the forming processing of the grinding wheel and the grinding processing of a workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63044641A JP2565968B2 (en) | 1988-02-29 | 1988-02-29 | Forming method of grinding wheel in thread groove grinding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63044641A JP2565968B2 (en) | 1988-02-29 | 1988-02-29 | Forming method of grinding wheel in thread groove grinding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01222863A JPH01222863A (en) | 1989-09-06 |
| JP2565968B2 true JP2565968B2 (en) | 1996-12-18 |
Family
ID=12697057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63044641A Expired - Fee Related JP2565968B2 (en) | 1988-02-29 | 1988-02-29 | Forming method of grinding wheel in thread groove grinding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2565968B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014217935A (en) * | 2013-05-10 | 2014-11-20 | 株式会社ディスコ | Dressing tool |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS584352U (en) * | 1981-06-30 | 1983-01-12 | 豊田工機株式会社 | Repair tool wear compensation device |
| JPS61173858A (en) * | 1985-01-29 | 1986-08-05 | Ntn Toyo Bearing Co Ltd | Dressing device for grind stone for grinding female thread groove |
| JPS62228370A (en) * | 1986-03-31 | 1987-10-07 | Mitsubishi Heavy Ind Ltd | Method for correcting shift in grinding reference position of dressing grinding wheel in numerically controlled grinding machine |
-
1988
- 1988-02-29 JP JP63044641A patent/JP2565968B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01222863A (en) | 1989-09-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6623332B1 (en) | Grinding machine and method for real-time dimension control | |
| JP3467807B2 (en) | Grinding equipment | |
| JP2002103220A (en) | Measuring method and working method for working portion | |
| JPH0241872A (en) | Numerical control grinder | |
| US6038489A (en) | Machine tools | |
| JPS58132460A (en) | Numerical controller for angular grinder | |
| JPS6315104B2 (en) | ||
| US4584795A (en) | Numerical control grinding machine for grinding a taper portion of a workpiece | |
| JPH05208356A (en) | Cup grinding machine | |
| US5773731A (en) | Method and apparatus for detecting residual grinding amount | |
| JPH05111851A (en) | Gear measuring method and gear grinder commonly used for gear measurement | |
| JPH10156692A (en) | Cam grinding machine | |
| JP2565968B2 (en) | Forming method of grinding wheel in thread groove grinding | |
| JPH06114702A (en) | Automatic taper correcting device | |
| JPS60114457A (en) | Spherical face forming grinder | |
| JP2578041B2 (en) | Automatic taper grinding method and device | |
| EP0579723B1 (en) | Probe positioning mechanism for a radius dresser | |
| EP0950214B1 (en) | Method of controlling a machine tool | |
| JP2602965B2 (en) | Automatic cylindrical grinding machine | |
| JPH05200649A (en) | Tool centering device | |
| JPH06258050A (en) | Profile measuring apparatus for grinding wheel | |
| JP2786879B2 (en) | Internal grinding device | |
| JPH07164314A (en) | Grinding wheel dimension measuring method and device in grinding machine | |
| JP2003205457A (en) | Work end face position detecting means and work end face position detecting method in machine tool for combined machining | |
| JP3050904B2 (en) | Machine tool with grinding function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |