JP3241453B2 - Grinding method - Google Patents
Grinding methodInfo
- Publication number
- JP3241453B2 JP3241453B2 JP25622592A JP25622592A JP3241453B2 JP 3241453 B2 JP3241453 B2 JP 3241453B2 JP 25622592 A JP25622592 A JP 25622592A JP 25622592 A JP25622592 A JP 25622592A JP 3241453 B2 JP3241453 B2 JP 3241453B2
- Authority
- JP
- Japan
- Prior art keywords
- grinding
- grindstone
- workpiece
- groove
- peripheral surface
- 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 - Lifetime
Links
Landscapes
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、被加工物の円柱状ま
たは円筒状の外径部と、インプロセス測定が不可能また
は困難な部分とを、連続して研削する研削方法に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grinding method for continuously grinding a cylindrical or cylindrical outer diameter portion of a workpiece and a portion where in-process measurement is impossible or difficult. .
【０００２】[0002]
【従来の技術】自動車のパワーステアリング装置のロー
タリ型コントロールバルブに用いるバルブシャフトを被
加工物とする、従来例の研削方法を図７について説明す
る。被加工物１の円柱状部１ａの表面に軸方向に沿う溝
２を８箇所に予め形成し、次に、被加工物１の両端部に
設けたセンタ孔３を研削する。その後、被加工物１の
円柱状部１ａの溝２を有する部分およびベアリング組付
部分１ｂに荒研削用砥石４によって外径荒研削をし、
前記円柱状部１ａの溝２を有する部分などを仕上げ研削
用砥石５によって外径仕上げ研削し、図８にも示すよ
うに、円柱状部１ａの溝２の両側部分に面取り用砥石６
によって面取り研削をしている。2. Description of the Related Art A conventional grinding method in which a valve shaft used for a rotary control valve of a power steering device of an automobile is used as a workpiece will be described with reference to FIG. Eight grooves 2 are formed in advance on the surface of the columnar portion 1a of the workpiece 1 at eight locations along the axial direction, and then the center holes 3 provided at both ends of the workpiece 1 are ground. After that, the outer diameter rough grinding is performed on the portion having the groove 2 of the cylindrical portion 1a of the workpiece 1 and the bearing assembly portion 1b by the rough grinding whetstone 4.
A portion having the groove 2 of the cylindrical portion 1a is subjected to an outer diameter finish grinding by a finish grinding grindstone 5, and a chamfering grindstone 6 is provided on both sides of the groove 2 of the cylindrical portion 1a as shown in FIG.
Chamfer grinding is performed by.
【０００３】前記，，の各工程は、荒研削盤、仕
上げ研削盤、面取り研削盤の３台の研削盤を用い、前記
の工程順に加工を行っている。そして、の面取り研削
は、インプロセス測定が不可能であるため、の仕上げ
研削工程で加工した外径寸法を接触式のＡＥセンサ７に
よって検知し、この検知結果に基づいて砥石台の熱変位
を補正して行っている。In each of the above-mentioned steps, processing is performed in the order of the above-mentioned steps using three grinding machines, a rough grinding machine, a finishing grinding machine, and a chamfering grinding machine. Since the in-process measurement is impossible in the chamfering grinding, the outer diameter dimension processed in the finishing grinding process is detected by the contact type AE sensor 7, and the thermal displacement of the grinding wheel head is determined based on the detection result. It has been corrected.
【０００４】[0004]
【発明が解決しようとする課題】前述した従来の研削方
法は、外径仕上げ研削と、溝の両側部分の面取り研削と
の両工程を、別個の研削盤で行っているため、被加工物
の着脱の際にアライメント不良が発生する。このアライ
メント不良は、面取り研削盤による面取り加工時に、被
加工物の外径の振れとなり、この振れが熱変位による誤
差に加わるため、大きな補正が必要となる。また、図８
に示すように、クーラントなどのノイズによってＡＥセ
ンサ７の検知精度に限界があるため、接触検知位置に誤
差が生じ、溝２の両側部分の面取り研削時に、溝２の面
取り幅寸法の誤差などによって不良品が発生するという
問題点があった。In the above-described conventional grinding method, both the outer diameter finish grinding and the chamfering grinding of both sides of the groove are performed by separate grinding machines. Alignment failure occurs during attachment and detachment. This misalignment causes the outer diameter of the workpiece to fluctuate during chamfering by the chamfering grinder, and this wobble adds to an error due to thermal displacement, so that a large correction is required. FIG.
As shown in the figure, since the detection accuracy of the AE sensor 7 is limited due to noise such as coolant, an error occurs in the contact detection position, and when the chamfering grinding of both sides of the groove 2 occurs due to an error in the chamfer width dimension of the groove 2. There is a problem that defective products are generated.
【０００５】この発明は、前述した問題点を解決し、被
加工物のアライメント不良をなくして溝の両側部分の面
取り幅の寸法誤差および精度不良をなくすと共に、１台
の研削盤によって被加工物の外径部、およびインプロセ
ス測定が不可能または困難な部分に高精度の研削加工が
でき、設備コストも低減できる、研削方法を提供するこ
とを目的とするものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, eliminates a misalignment of a workpiece, eliminates a dimensional error and an inaccuracy of a chamfer width on both sides of a groove, and uses a single grinding machine to remove the workpiece. It is an object of the present invention to provide a grinding method capable of performing high-precision grinding on an outer diameter portion and a portion where in-process measurement is impossible or difficult, and can reduce equipment cost.
【０００６】[0006]
【課題を解決するための手段】上記の目的を達成するた
めに本発明は、円柱状部と該円柱状部の外周面に円柱 状
部の円周方向に等間隔に設けられているとともに円柱状
部の軸方向の一部に延在する複数の溝とを有する被加工
物の研削方法であって、前記円柱状部の外周面を荒研削
する大径の第１砥石と、前記外周面の仕上げ研削と前記
溝の面取り加工を行う小径の第２砥石とを備え、前記円
柱状部の外周面を前記第１砥石で荒研削する第１ステッ
プと、前記荒研削後の前記円柱状部の外周面を定寸装置
でインプロセス測定しながら前記第２砥石で所定の径ま
で仕上げ研削する第２ステップと、前記外周面が所定の
径まで仕上げ研削されたことが前記定寸装置によって検
出された時の第２砥石の位置を求める第３ステップと、
前記仕上げ研削後に前記溝の面取り加工部を前記第２砥
石に正対する位置に割り出す第４ステップと、前記求め
られた第２砥石の位置を基準にして前記割り出された溝
の面取り加工部に対し前記第２砥石を切り込む第５ステ
ップとを備えることを特徴とする。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a columnar portion and a columnar portion formed on the outer peripheral surface of the columnar portion.
Are provided at equal intervals in the circumferential direction of the part and are cylindrical
Having a plurality of grooves extending in an axial part of the portion
An object grinding method, wherein the outer peripheral surface of the cylindrical portion is roughly ground.
A first grindstone having a large diameter, a finish grinding of the outer peripheral surface,
A second grindstone having a small diameter for chamfering a groove;
A first step of roughly grinding the outer peripheral surface of the columnar portion with the first grinding wheel;
And a sizing device for the outer peripheral surface of the cylindrical portion after the rough grinding.
While using in-process measurement with
A second step of finishing grinding with
It is checked by the sizing device that the finish grinding to the diameter has been completed.
A third step of determining the position of the second grindstone when it is issued;
After the finish grinding, the chamfered portion of the groove is
A fourth step of determining a position directly opposite to the stone;
The indexed groove based on the determined position of the second grinding wheel
Fifth step for cutting the second grindstone into the chamfered portion of
And a tip .
【０００７】[0007]
【作用】この発明の研削方法においては、上記第１ステ
ップ〜第５ステップを備えることにより、インプロセス
測定が可能な被加工物の円柱状部の外周面に対する荒研
削及び仕上げ研削とインプロセス測定が不可能または困
難な溝の面取り加工を、１台の研削盤のテーブルに被加
工物を装着したまま行うことができ、従来のように、２
台の研削盤のテーブルに被加工物を着脱してそれぞれの
研削するのと異なり、被加工物の着脱時に発生する被加
工物のアライメント不良がなくなり、同軸度が向上す
る。このため、インプロセス測定が不可能または困難な
部分の研削加工時に被加工物の外径振れを原因とする精
度不良がなくなり、高精度の加工ができる。In the grinding method of the present invention , the first step
In-process by providing
Rough grinding on the outer peripheral surface of a cylindrical part of a work piece that can be measured
Milling and finishing grinding and in-process measurement are impossible or difficult
Difficult chamfering of grooves can be performed while the workpiece is mounted on the table of one grinder.
Unlike the case where the workpiece is attached to and detached from the table of the grinder, and each of the grindings is performed, the alignment defect of the workpiece that occurs when the workpiece is attached and detached is eliminated, and the coaxiality is improved. For this reason, when grinding in a part where in-process measurement is impossible or difficult, inaccuracy due to run-out of the workpiece during grinding is eliminated, and highly accurate processing can be performed.
【０００８】また、被加工物の円柱状部の外周面に対す
る研削時に用いる定寸装置は、ノイズの影響が少ないも
のを使用でき、このため円柱状部の外周面の研削後の仕
上げ径を正確に測定することができ、研削終了後の第２
砥石の砥石台の熱変位の補正を正確に行うことで、第２
砥石の位置を正確に求めることができる。そして、被加
工物のインプロセス測定が不可能または困難な溝部分の
面取り加工は、上記研削終了時に求めた第２砥石の位置
を基準に切り込むことで行われるため、溝部分 の加工精
度が向上する。In addition, a sizing device used for grinding the outer peripheral surface of the cylindrical portion of the workpiece can be used with less influence of noise, and therefore, the grinding of the outer peripheral surface of the cylindrical portion can be performed. Finished diameter after finishing can be measured accurately, and the second
By performing the correction of the wheel head of the thermal displacement of the grinding wheel precisely, the second
The position of the grindstone can be determined accurately. The chamfering of the groove portion where the in-process measurement of the workpiece is impossible or difficult is performed by using the position of the second grindstone obtained at the end of the grinding.
Since the cutting is performed based on the reference, the processing accuracy of the groove portion is improved.
【０００９】さらに、大径の第１砥石で効率よく被加工
物の円柱状部の外周面を荒研削した上で、溝部分の面取
り加工可能な小径の第２砥石によって仕上げ径に達する
まで研削を行い、その時の第２砥石の位置を基準にして
切り込むことによりインプロセス測定が不可能または困
難な溝部分の面取り加工を行うので、精度と能率の双方
とも高い研削が可能となる。また、インプロセス測定が
可能な被加工物の円柱状部外周面の研削とインプロセス
測定が不可能な溝部分の面取り加工に従来は２台用いて
いた研削盤が、この発明では１台の研削盤ですむので、
設備コストを低減できる。Further, after the outer peripheral surface of the columnar portion of the workpiece is roughly ground with a large-diameter first grindstone efficiently , the groove portion is chamfered.
Grinding is performed using a small-diameter second grindstone that can be machined until the finish diameter is reached. Based on the position of the second grindstone at that time,
Since Lee down process measurement performs chamfering impossible or difficult groove portions by cutting, thereby enabling a high grinding both accuracy and efficiency. Also, in-process measurement
Grinding and in-process of outer peripheral surface of cylindrical part of possible workpiece
Conventionally, two grinders are used for chamfering grooves where measurement is impossible, but in the present invention only one grinder is required.
Equipment costs can be reduced.
【００１０】[0010]
【実施例】以下、この発明の実施例につき図を参照して
説明する。図１はこの発明の第１実施例による研削方法
を行う複合研削盤を示す。図１において、１１はベッド
であり、ベッド１１上には、テーブル１２を設けると共
に、外径荒研削用の第１砥石台１３と、外径仕上げ兼面
取り研削用の第２砥石台１４とを、左，右に並べて設
け、複合研削盤をデュアルヘッド構成にしてある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a composite grinding machine for performing a grinding method according to a first embodiment of the present invention. In FIG. 1, reference numeral 11 denotes a bed. On the bed 11, a table 12 is provided, and a first grindstone table 13 for outer diameter rough grinding and a second grindstone table 14 for outer diameter finishing and chamfering grinding are provided. , Left and right, and the compound grinding machine has a dual head configuration.
【００１１】テーブル１２は、ベッド１１に設けたテー
ブル移動用サーボモータ１５の駆動によって送りねじ軸
１６を介しＺ軸（左右）方向に往復移動するように構成
されている。テーブル１２上には主軸台１７と心押台１
８とが設けられ、これらの間に被加工物１が着脱可能に
保持されている。この被加工物１は、パワーステアリン
グ装置のロータリ型コントロールバルブに用いるバルブ
シャフトである。The table 12 is configured to reciprocate in the Z-axis (left / right) direction via a feed screw shaft 16 by driving a table moving servomotor 15 provided on the bed 11. The headstock 17 and tailstock 1 are placed on the table 12.
8 are provided, between which the workpiece 1 is detachably held. The workpiece 1 is a valve shaft used for a rotary control valve of a power steering device.
【００１２】前記主軸台１７には、主軸回転用サーボモ
ータ１９の駆動によって回転する主軸２０、および主軸
２０から被加工物１に回転力を伝達する駆動金具２１が
設けられ、主軸回転用サーボモータ１９には主軸２０の
回転検出用エンコーダ２２が付設されている。なお、３
３，３４は主軸側，心押台側センタである。[0012] the headstock 17, the spindle 20 is rotated by driving the spindle rotation servomotor 19, and the drive fitting 21 for transmitting a rotational force to the workpiece 1 is provided from the spindle 20, the servo motor for spindle rotation 19 is provided with an encoder 22 for detecting the rotation of the main shaft 20. In addition, 3
Reference numerals 3 and 34 denote centers of the spindle and tailstock.
【００１３】前記第１，第２砥石台１３，１４は、ベッ
ド１１に設けた第１，第２砥石台移動用サーボモータ２
３，２４の駆動によって送りねじ軸２５，２６を介しＸ
軸（前後）方向に往復移動するようにそれぞれ構成さ
れ、このサーボモータ２３，２４には、サーボモータ２
３，２４の回転を検出するエンコーダ２３ａ，２４ａが
設けられている。また、第１，第２砥石軸駆動装置２
７，２８によって回転する第１，第２砥石軸２９，３０
に第１，第２砥石３１，３２がそれぞれ着脱可能に嵌合
固定されている。The first and second grinding wheel heads 13 and 14 are provided with a servomotor 2 for moving the first and second grinding wheel heads provided on the bed 11.
X through the feed screw shafts 25 and 26 by the drive of
The servomotors 23 and 24 are configured to reciprocate in the axial (front-back) direction.
Encoders 23a and 24a for detecting rotations of the motors 3 and 24 are provided. In addition, the first and second grinding wheel shaft driving devices 2
First and second grinding wheel shafts 29, 30 rotated by 7, 28
The first and second grindstones 31 and 32 are detachably fitted and fixed respectively.
【００１４】第１，第２砥石軸２９，３０は、相対向し
て第１，第２砥石台１３，１４の左，右にそれぞれ突出
し、第１，第２砥石３１，３２と共にテーブル１２の移
動方向と平行に配置されている。第１砥石３１は荒研削
用、第２砥石３２は仕上げ研削兼面取り研削用であり、
第２砥石３２は、第１砥石３１より小外径にすると共
に、被加工物１の溝２の長さとほぼ等しい軸方向長さに
してある。The first and second grindstone shafts 29 and 30 are opposed to each other and project to the left and right of the first and second grindstone stands 13 and 14, respectively. It is arranged parallel to the moving direction. The first grindstone 31 is for rough grinding, the second grindstone 32 is for finish grinding and chamfering grinding,
The second grindstone 32 has a smaller outer diameter than the first grindstone 31 and an axial length substantially equal to the length of the groove 2 of the workpiece 1.
【００１５】また、４０は数値制御装置であり、この制
御装置４０には、中央処理装置（ＣＰＵ）４１、メモリ
４２およびインタフェイス４３，４４が設けられてい
る。一方のインタフェイス４３には、第１，第２砥石台
位置制御用の駆動回路４５，４６、テーブル位置制御用
の駆動回路４７および主軸回転制御用の駆動回路４８を
設け、これらの駆動回路４５，４６，４７および４８に
よって前記サーボモータ２３，２４，１５および１９を
それぞれ制御するように構成され、一方のインタフェイ
ス４３には、前記エンコーダ２２，２３ａ，２４ａ、お
よびテーブル１２の適所に設けた定寸装置４９からの測
定値をそれぞれ入力するように構成され、他方のインタ
フェイス４４はキーボード５０に接続されている。Numeral 40 denotes a numerical controller, which is provided with a central processing unit (CPU) 41, a memory 42, and interfaces 43 and 44. On one interface 43, drive circuits 45 and 46 for controlling the position of the first and second grindstone heads, a drive circuit 47 for controlling the position of the table, and a drive circuit 48 for controlling the rotation of the spindle are provided. , 46, 47 and 48, respectively, to control the servo motors 23, 24, 15 and 19, respectively. One interface 43 is provided at an appropriate position of the encoders 22, 23a and 24a and the table 12. It is configured to input measurement values from the sizing device 49, respectively, and the other interface 44 is connected to a keyboard 50.
【００１６】次に、前述した構成の研削盤を用いて行う
この発明の一実施例による研削方法について説明する。
前述した従来例と同様に、被加工物１に溝２を形成し、
両端部に設けたセンタ孔３（図２参照）を別の研削盤を
用いて研削した後、主軸側センタ３３と心押台センタ３
４とにセンタ孔３をそれぞれ係合支持させて、被加工物
１をテーブル１２に着脱可能に保持させる。そして、第
１砥石台１３は、第１砥石３１を被加工物１の溝２を形
成した部分と対向させてこの部分の後方に位置させ、第
２砥石台３２は後退させておく。Next, a description will be given of a grinding method according to an embodiment of the present invention, which is performed using the grinding machine having the above-described configuration.
A groove 2 is formed in a workpiece 1 in the same manner as in the conventional example described above,
After the center holes 3 (see FIG. 2) provided at both ends are ground by using another grinding machine, the spindle-side center 33 and the tailstock center 3 are ground.
The workpiece 1 is detachably held on the table 12 by engaging and supporting the center holes 3 with the workpiece 4 respectively. Then, the first grindstone base 13 positions the first grindstone 31 behind the portion where the groove 2 of the workpiece 1 is formed, and the second grindstone base 32 is retracted.
【００１７】この状態で、図３に示すフローチャートに
したがって、荒研削、仕上げ研削および溝の両側部分の
面取り研削を順次行う。まず、キーボード５０の操作に
よって数値制御装置４０を動作させ、主軸回転用サーボ
モータ１９の駆動によって被加工物１を軸回りに回転さ
せると共に、第１砥石軸駆動装置２７の駆動によって荒
研削用の第１砥石３１を軸回りに回転させつつ、第１砥
石台移動用サーボモータ２３の駆動によって第１砥石台
１３および第１砥石３１を第１砥石軸２９と直交するＸ
方向に前進させ、図２の実線に示すように、第１砥石３
１の外周面を被加工物１の円柱状部１ａの溝２を形成し
た部分およびベアリング組付部分１ｂの外径部（外周
面）に接触させて荒研削を行う。In this state, rough grinding, finish grinding, and chamfer grinding of both sides of the groove are sequentially performed according to the flowchart shown in FIG. First, the numerical controller 40 is operated by operating the keyboard 50, the workpiece 1 is rotated around the axis by driving the spindle rotation servomotor 19, and the rough grinding is performed by driving the first grinding wheel shaft driving device 27. While rotating the first grindstone 31 around the axis, the first grindstone base 13 and the first grindstone 31 are driven by the servomotor 23 for moving the first grindstone base 13 so that the X is orthogonal to the first grindstone axis 29.
In the direction shown by the solid line in FIG.
The outer peripheral surface of the workpiece 1 has an outer diameter portion (outer peripheral portion) of a portion where the groove 2 of the cylindrical portion 1a of the workpiece 1 is formed and a bearing assembly portion 1b.
Surface) to perform rough grinding.
【００１８】以下の説明において、設定値とは、あらか
じめメモリ４２に記憶させた被加工物１の仕上げ寸法の
値をいう。また、計測値とは、定寸装置４９で測定した
被加工物１の研削部の外径の値をいう。また、座標値と
は、サーボモータ２３，２４の回転を検出するエンコー
ダ２３ａ，２４ａの値から求めた砥石台１３，１４の位
置を示した値をいう。In the following description, the set value refers to a finish dimension value of the workpiece 1 stored in the memory 42 in advance. The measured value refers to a value of the outer diameter of the ground portion of the workpiece 1 measured by the sizing device 49. The coordinate value is a value indicating the position of the grindstone heads 13 and 14 obtained from the values of the encoders 23a and 24a that detect the rotation of the servomotors 23 and 24.
【００１９】前記荒研削は、数値制御装置４０のメモリ
４２に記憶された荒研削用の第１設定値まで、中央処理
装置４１からの信号によって行う。すなわち、荒研削が
第１設定値に達したことを、定寸装置４９で検出した第
１計測値によって検知される。その後、この第１計測値
とエンコーダ２３ａから得られた第１砥石３１の位置を
示した第１座標値とを、中央処理装置４１で比較して差
を算出し、この差を第１座標値に加え、第１砥石３１な
どの熱変位を補正し、荒研削の寸法管理をインプロセス
測定によって行い、荒研削工程を終了させる。The rough grinding is performed by a signal from the central processing unit 41 up to the first set value for rough grinding stored in the memory 42 of the numerical controller 40. That is, the fact that the rough grinding has reached the first set value is detected by the first measurement value detected by the sizing device 49. Thereafter, the central processing unit 41 compares the first measured value with the first coordinate value indicating the position of the first grindstone 31 obtained from the encoder 23a to calculate a difference. In addition, the thermal displacement of the first grindstone 31 and the like is corrected, the dimensional control of the rough grinding is performed by in-process measurement, and the rough grinding process is completed.
【００２０】荒研削工程で砥石台１３の熱変位補正する
のは、次の被加工物１の荒研削を行う時、砥石の早送り
前進端を被加工物１に対して一定にすることができ、荒
研削の研削時間のばらつきを小さくすることができる。The thermal displacement of the grindstone table 13 is corrected in the rough grinding step because the rapid advance end of the grindstone can be fixed with respect to the workpiece 1 when the next rough grinding of the workpiece 1 is performed. In addition, variations in the grinding time of the rough grinding can be reduced.
【００２１】次に、第１砥石台１３を荒研削開始前の位
置に後退させて停止させると共に、第１砥石３１の回転
を停止させる。第１砥石台１３の後退開始に若干遅れ
て、テーブル移動用サーボモータ１５を駆動させて、テ
ーブル１２を図１の右方に移動させ、後退している第２
砥石３２と被加工物１の円柱状部１ａとを対向させる。Next, the first grindstone table 13 is retracted to the position before the start of rough grinding and stopped, and the rotation of the first grindstone 31 is stopped. The table moving servomotor 15 is driven slightly behind the start of retreat of the first grindstone table 13 to move the table 12 rightward in FIG.
The grindstone 32 and the columnar portion 1a of the workpiece 1 are opposed to each other.
【００２２】この状態で、第２砥石軸駆動装置２８を駆
動させて仕上げ研削兼面取り研削用の第２砥石３２を回
転させつつ、第２砥石台移動用サーボモータ２４の駆動
によって第２砥石台１４および第２砥石３２を第２砥石
軸３０と直交するＸ方向に前進させ、図２の一点鎖線に
示すように、第２砥石３２の外周面を被加工物１の円柱
状部１ａの溝２を有する部分の外径部に接触させ、テー
ブル１２をＺ軸方向に往復移動させつつ仕上げ研削を行
う。In this state, while the second grindstone shaft driving device 28 is driven to rotate the second grindstone 32 for finish grinding and chamfering grinding, the second grindstone head moving servomotor 24 is driven to drive the second grindstone head. 14 and the second grindstone 32 are advanced in the X direction orthogonal to the second grindstone axis 30, and the outer peripheral surface of the second grindstone 32 is formed in the groove of the cylindrical portion 1 a of the workpiece 1 as shown by the dashed line in FIG. 2. Finish grinding is performed while the table 12 is reciprocated in the Z-axis direction while being brought into contact with the outer diameter portion of the portion having 2.
【００２３】この仕上げ研削は、メモリ４２に記憶され
た仕上げ研削用の第２設定値まで、中央処理装置４１か
らの信号によって行う。すなわち、仕上げ研削が第２設
定値に達したことを、定寸装置４９で検出した第２計測
値によって検知される。その後、この第２計測値とエン
コーダ２４ａから得られた第２砥石台１４の位置を示し
た第２座標値とを、中央処理装置４１で比較して差を算
出し、この差を第２座標値に加え、第２砥石台１４など
の熱変位を補正し、仕上げ研削の寸法管理をインプロセ
ス測定によって行い、仕上げ研削工程を終了させる。The finish grinding is performed by a signal from the central processing unit 41 up to the second set value for finish grinding stored in the memory 42. That is, the fact that the finish grinding has reached the second set value is detected by the second measurement value detected by the sizing device 49. Thereafter, the central processing unit 41 compares the second measured value with the second coordinate value indicating the position of the second grindstone table 14 obtained from the encoder 24a to calculate a difference. In addition to the value, the thermal displacement of the second grinding wheel head 14 and the like is corrected, the dimensional control of the finish grinding is performed by in-process measurement, and the finish grinding process is completed.
【００２４】続いて、被加工物１のインプロセス測定が
不可能な部分、具体的には被加工物１の円柱状部１ａに
形成した溝２の両側部分の面取り研削をする。この面取
り研削は、第２砥石台１４をＸ軸方向に後退させて、第
２砥石３２を被加工物１の外周面と離間させ、テーブル
１２をＺ軸方向に移動させることで、被加工物１の溝２
と第２砥石３２とを正対させる（図２の一点鎖線、図４
参照）。Subsequently, a portion of the workpiece 1 where in-process measurement is impossible, specifically, both sides of the groove 2 formed in the cylindrical portion 1a of the workpiece 1 is chamfered and ground. In this chamfering grinding, the second grinding wheel table 14 is retracted in the X-axis direction, the second grinding wheel 32 is separated from the outer peripheral surface of the workpiece 1, and the table 12 is moved in the Z-axis direction. 1 groove 2
And the second grindstone 32 (see dashed line in FIG. 2, FIG. 4).
reference).
【００２５】次に、主軸回転用サーボモータ１９による
被加工物１のＣ軸回りの回転と、第２砥石台移動用サー
ボモータ２４による第２砥石台１４および第２砥石３２
のＸ軸方向への移動によるＣ−Ｘ軸同時制御によって、
図４に示すように、第２砥石３２で被加工物１の溝２の
両側部分を溝２の幅方向中央２ａを基準として対称に行
う。Next, the rotation of the workpiece 1 about the C axis by the spindle motor 19 and the second wheel head 14 and the second wheel 32 by the second wheel head moving servo motor 24.
By simultaneous control of CX axis by movement of X axis direction,
As shown in FIG. 4, both side portions of the groove 2 of the workpiece 1 are symmetrically performed with the second grindstone 32 with respect to the center 2 a in the width direction of the groove 2.
【００２６】この面取り研削は、前記基準位置２ａから
Ｃ軸回りに反時計方向と時計方向とに被加工物１を回転
させて、溝２の一側部分と他側部分とに分けて行い、あ
るいは被加工物１を一方向に回転させ、基準位置２ａの
図４左，右での研削誤差を修正しつつ、被加工物１の溝
２の両側部分を高精度に対称形になるように面取り加工
する。This chamfering grinding is performed by rotating the workpiece 1 counterclockwise and clockwise around the C axis from the reference position 2a to divide one side portion of the groove 2 into the other side portion. Alternatively, the workpiece 1 is rotated in one direction to correct the grinding error of the reference position 2a on the left and right in FIG. Chamfering.
【００２７】なお、被加工物１の全部の溝２、すなわち
被加工物１の円周方向８箇所に設けた溝２の両側部分に
それぞれ面取り加工を行うが、これらの加工は、全部の
溝２の一側部分を研削した後、全部の溝２の他側部分を
研削する方法、１箇所の溝２の一側部分を研削した後、
この溝２の他側部分を研削することを、８箇所の溝２に
対し順次行う方法などがある。Note that chamfering is performed on all the grooves 2 of the workpiece 1, that is, on both sides of the grooves 2 provided at eight locations in the circumferential direction of the workpiece 1. After grinding one side of the groove 2, a method of grinding the other side of all the grooves 2, after grinding one side of the groove 2,
There is a method of sequentially grinding the other side portion of the groove 2 for eight grooves 2.
【００２８】被加工物１の全部の溝２の両側部分の面取
加工を完了した後、第２砥石台１４を仕上げ研削を行う
以前の位置に復帰させ、第２砥石３２の回転を停止させ
ると共に、テーブル１２を荒研削を行う以前の位置に復
帰させ、主軸２０の回転を停止させる。その後、主軸側
センタ３３と心押台側センタ３４とによる研削加工完了
後の被加工物１の保持を解除し、この被加工物１をテー
ブル１２外に搬出し、未加工の被加工物を前記センタ３
３，３４によって着脱可能にテーブル１２上に装着し、
以後前述した研削加工を未加工の被加工物に行うこと
を、繰り返す。After the chamfering of both sides of all the grooves 2 of the workpiece 1 is completed, the second grindstone table 14 is returned to the position before the finish grinding, and the rotation of the second grindstone 32 is stopped. At the same time, the table 12 is returned to the position before the rough grinding is performed, and the rotation of the spindle 20 is stopped. Thereafter, the holding of the workpiece 1 after the completion of the grinding by the spindle side center 33 and the tailstock side center 34 is released, the workpiece 1 is carried out of the table 12, and the unprocessed workpiece is removed. Center 3
It is detachably mounted on the table 12 by 3, 34,
Thereafter, performing the above-described grinding on the unprocessed workpiece is repeated.
【００２９】前述したように、第１実施例では、１台の
研削盤に設けた第１砥石３１によって被加工物１に荒研
削を行った後、第２砥石３２によって仕上げ研削と溝２
の両側部分の研削とを行っているので、３台の研削盤に
被加工物を順次付け替える、従来の研削方法に比べ、研
削を能率よく行うことができ、被加工物を付け替えず
に、荒研削、仕上げ研削、面取り研削を能率よく行える
と共に、設備コストを低減できる。As described above, in the first embodiment, after the workpiece 1 is roughly ground by the first grindstone 31 provided on one grinder, the finish grinding and the groove 2 are performed by the second grindstone 32.
Grinding on both sides of the grinding machine makes it possible to perform grinding more efficiently than conventional grinding methods, in which workpieces are sequentially replaced on three grinders. Grinding, finish grinding and chamfer grinding can be performed efficiently, and equipment costs can be reduced.
【００３０】また、第１実施例では、１台の研削盤のテ
ーブル１２に被加工物１を装着したままで、前述した３
種類の研削加工を行うことができ、従来例のような被加
工物の着脱時に発生するアライメント不良がなくなり、
同軸度が向上するため、仕上げ研削および溝の両側部分
の研削加工中に被加工物の外径振れを原因とする精度不
良がなくなり、とくに溝２の両側部分の面取り研削時
に、面取り幅の精度が向上する。In the first embodiment, while the workpiece 1 is mounted on the table 12 of one grinding machine,
Various types of grinding can be performed, eliminating alignment defects that occur when attaching and detaching a workpiece as in the conventional example.
Since the coaxiality is improved, there is no inaccuracy due to runout of the outer diameter of the workpiece during the finish grinding and the grinding process on both sides of the groove. Is improved.
【００３１】さらに、テーブル１２に設けた１つの定寸
装置４９の信号に基づき、荒研削，仕上げ研削時の第
１，第２砥石台１３，１４の熱変位をインプロセス測定
によって補正でき、構造が簡単になる。さらに、第２砥
石３２で被加工物の外径を所定の仕上げ径に研削された
ことを、ノイズの影響が少ない定寸装置４９を使用して
正確に検知して、定寸装置４９で検出した第２計測値
と、第２砥石台１４の位置を示す第２座標値とを比較し
て、第２砥石台１４の熱によって生じた変位を正確に得
ることができるため、熱変位の補正誤差が減少し、引き
続いて、第２砥石台１４の砥石３２で行うインプロセス
測定が不可能な溝２の両側部分の面取り研削時の形状精
度が向上する。Further, based on the signal of one sizing device 49 provided on the table 12, the thermal displacement of the first and second grindstone bases 13 and 14 during rough grinding and finish grinding can be corrected by in-process measurement. Becomes easier. Further, the fact that the outer diameter of the workpiece has been ground to the predetermined finish diameter by the second grindstone 32 is accurately detected by using the sizing device 49 having little influence of noise, and detected by the sizing device 49. By comparing the measured second value and the second coordinate value indicating the position of the second grindstone head 14, the displacement caused by the heat of the second grindstone head 14 can be obtained accurately, so that the thermal displacement is corrected. The error is reduced, and the shape accuracy at the time of chamfering both sides of the groove 2 where the in-process measurement performed by the grindstone 32 of the second grindstone stand 14 is impossible is improved.
【００３２】そして、被加工物１の外径部の荒加工時
に、ベアリング組付部１ｂも加工するため、この組付部
１ｂと溝２の両側部分の面取り加工部分との同軸度が向
上し、バルブシャフトである被加工物１にコントロール
バルブを組み付けた後のバルブ特性が向上する。When the outer diameter portion of the workpiece 1 is roughened, the bearing assembly portion 1b is also machined, so that the coaxiality between the assembly portion 1b and the chamfered portions on both sides of the groove 2 is improved. In addition, the valve characteristics after the control valve is mounted on the workpiece 1 as the valve shaft are improved.
【００３３】この発明の第２実施例による研削方法につ
き、図５を参照して説明する。図５において、５１は円
柱状のジャーナル部５２とインプロセス測定が困難なカ
ム部５３とを軸方向に離間させて形成したカム軸からな
る被加工物であり、被加工物５１は両端部が主軸側セン
タ３３と心押台センタ３４とに係合支持されて、図５に
は図示省略したテーブル上方に着脱可能に装着される。A grinding method according to a second embodiment of the present invention will be described with reference to FIG. In FIG. 5, reference numeral 51 denotes a workpiece formed of a cam shaft formed by axially separating a cylindrical journal portion 52 and a cam portion 53 for which in-process measurement is difficult, and the workpiece 51 has both ends. It is engaged and supported by the spindle side center 33 and the tailstock center 34, and is detachably mounted above a table not shown in FIG.
【００３４】ジャーナル部５２の外径荒研削用の第１砥
石台１３と、外径仕上げとカム部５３の研削用とを兼ね
た第２砥石台１４とを、左，右に並べて設けて、複合研
削盤をデュアルヘッド構成にしてあり、第１砥石台１３
に装着した第１砥石３１と、第２砥石台１４に装着した
第２砥石３２とをほぼ等しい外径にしてある。なお、第
２実施例に用いる複合研削盤の前述した以外の構成は、
第１実施例に用いる複合研削盤とほぼ同構成にしてあ
る。A first grindstone table 13 for rough grinding of the outer diameter of the journal part 52 and a second grindstone table 14 for both outer diameter finishing and grinding of the cam part 53 are provided side by side on the left and right sides. The compound grinding machine has a dual head configuration, and the first grinding wheel head 13
The outer diameter of the first grindstone 31 mounted on the second grindstone and the outer diameter of the second grindstone 32 mounted on the second grindstone stand 14 are substantially equal. The configuration of the composite grinding machine used in the second embodiment other than that described above is as follows.
It has almost the same configuration as the composite grinding machine used in the first embodiment.
【００３５】第２実施例による研削方法は、第１砥石台
１３に装着した第１砥石３１によって被加工物５１のジ
ャーナル部５２の外径部を荒研削し、次に、荒研削を終
了した前記外径部を第２砥石台１４に装着した第２砥石
３２によって仕上げ研削し、その後、第２砥石３２によ
って被加工物５１のインプロセス測定による制御では加
工が困難なカム部５３の外周面を研削する。In the grinding method according to the second embodiment, the outer diameter portion of the journal portion 52 of the workpiece 51 is roughly ground by the first grindstone 31 mounted on the first grindstone table 13, and then the rough grinding is completed. The outer diameter portion is finish-ground by the second grindstone 32 mounted on the second grindstone table 14, and thereafter, the outer peripheral surface of the cam portion 53, which is difficult to process by the in-process measurement of the workpiece 51 by the second grindstone 32. Grinding.
【００３６】第２実施例の前記各研削は、第１実施例で
は、第２砥石３２によって被加工物の溝の両側部分を面
取り研削したのを、カム部５３の外周面の研削にした以
外、第１実施例とほぼ同様である。また、第２実施例で
は、被加工物５１に形成された複数のジャーナル部５２
の全部に、荒研削を行った後仕上げ研削を行い、さらに
その後、複数のカム部５３の全部を研削しても、荒研削
と仕上げ研削とをジャーナル部５２に行うことを繰り返
して全部のジャーナル部５２の研削を行い、任意のジャ
ーナル部５２の仕上げ研削に続けて、適宜カム部５３の
研削をしてもよい。In the first embodiment, each of the grindings in the second embodiment is performed by chamfering both sides of the groove of the workpiece by the second grindstone 32, except that the outer peripheral surface of the cam portion 53 is ground. , And the first embodiment. In the second embodiment, a plurality of journal portions 52 formed on the workpiece 51 are provided.
Even if all of the plurality of cam portions 53 are ground after the rough grinding is performed, and then all of the plurality of cam portions 53 are ground, the rough grinding and the finish grinding are repeatedly performed on the journal portion 52 to repeat the entire grinding. The cam portion 53 may be appropriately ground following the finish grinding of an arbitrary journal portion 52 by grinding the portion 52.
【００３７】この発明の第３実施例による研削方法につ
き、図６を参照して説明する。 図６において、６１は
一端部に大外径部６２を形成し、大外径部６２と、これ
と同軸に小外径の筒状部６３を一体に形成した被加工物
であり、被加工物６１は、主軸２０の先端部に固定した
チャック６４に大外径部６２が着脱可能に保持される。A grinding method according to a third embodiment of the present invention will be described with reference to FIG. In FIG. 6, reference numeral 61 denotes a workpiece in which a large outer diameter portion 62 is formed at one end and a large outer diameter portion 62 and a small outer diameter cylindrical portion 63 are integrally formed coaxially with the large outer diameter portion 62. The large-diameter portion 62 of the object 61 is detachably held by a chuck 64 fixed to the tip of the spindle 20.
【００３８】筒状部６３の外径荒研削用の第１砥石３１
と、前記筒状部６３の外径仕上げ研削インプロセス測定
による制御では加工が困難な筒状部の内径研削用の第１
砥石３２とを、図６には図示しない第１砥石台と第２砥
石台に設けてある。なお、第３実施例に用いる複合研削
盤の前述した以外の構成は、第１実施例に用いる複合研
削盤とほぼ同構成にしてある。First grindstone 31 for rough grinding of outer diameter of cylindrical portion 63
The first for grinding the inner diameter of the cylindrical portion, which is difficult to process by the outer diameter finish grinding in-process measurement of the cylindrical portion 63, is difficult.
The grindstone 32 is provided on a first grindstone stand and a second grindstone stand not shown in FIG. The configuration of the composite grinding machine used in the third embodiment other than that described above is almost the same as that of the composite grinding machine used in the first embodiment.
【００３９】第３実施例による研削方法は、第１砥石３
１によって被加工物６１の筒状部６３の外径部を荒研削
し、次に荒研削を終了した前記外径部を第２砥石３２に
よって仕上げ研削し、その後、第２砥石３２を筒状部６
３内に右側から挿入し、第２砥石３２によって、筒状部
６３のインプロセス測定が困難な内径部を研削する。The grinding method according to the third embodiment uses the first grinding stone 3
1, the outer diameter portion of the cylindrical portion 63 of the workpiece 61 is roughly ground, and then the outer diameter portion after the rough grinding is finish-ground by the second grindstone 32, and then the second grindstone 32 is cylindrically shaped. Part 6
3 is ground from the right side, and the second grindstone 32 grinds the inner diameter portion of the cylindrical portion 63 where in-process measurement is difficult.
【００４０】そして、第２，第３実施例による荒研削、
仕上げ研削は、それぞれ定寸装置で検知した計測値と砥
石台を駆動する駆動モータの回転を検出するエンコーダ
で検知した座標値と比較して差を算出し、この差を座標
値に加えて第１，第２砥石台の熱変位に対する補正を各
別に行う。なお、図５，図６において、図１，図２と同
符号は対応する部分を示す。Then, rough grinding according to the second and third embodiments,
In finish grinding, the difference is calculated by comparing the measured value detected by the sizing device with the coordinate value detected by the encoder that detects the rotation of the drive motor that drives the grinding wheel head, and adds this difference to the coordinate value to calculate the difference. First, the correction for the thermal displacement of the second grinding wheel head is performed separately. 5 and 6, the same reference numerals as those in FIGS. 1 and 2 indicate corresponding parts.
【００４１】[0041]
【発明の効果】以上説明したように、この発明は、円柱
状部と該円柱状部の外周面に円柱状部の円周方向に等間
隔に設けられているとともに円柱状部の軸方向の一部に
延在する複数の溝とを有する被加工物の研削方法であっ
て、前記円柱状部の外周面を荒研削する大径の第１砥石
と、前記外周面の仕上げ研削と前記溝の面取り加工を行
う小径の第２砥石とを備え、前記円柱状部の外周面を前
記第１砥石で荒研削する第１ステップと、前記荒研削後
の前記円柱状部の外周面を定寸装置でインプロセ ス測定
しながら前記第２砥石で所定の径まで仕上げ研削する第
２ステップと、前記外周面が所定の径まで仕上げ研削さ
れたことが前記定寸装置によって検出された時の第２砥
石の位置を求める第３ステップと、前記仕上げ研削後に
前記溝の面取り加工部を前記第２砥石に正対する位置に
割り出す第４ステップと、前記求められた第２砥石の位
置を基準にして前記割り出された溝の面取り加工部に対
し前記第２砥石を切り込む第５ステップとを備える構成
にしたので、次の効果が得られる。As described above, the present invention provides a cylinder
Between the cylindrical part and the outer peripheral surface of the cylindrical part in the circumferential direction of the cylindrical part
And a part of the columnar part in the axial direction.
A method of grinding a workpiece having a plurality of extending grooves.
And a large-diameter first grinding wheel for roughly grinding the outer peripheral surface of the cylindrical portion.
Finishing grinding of the outer peripheral surface and chamfering of the groove.
And a second grindstone having a small diameter.
A first step of rough grinding with the first grinding wheel, and after the rough grinding
Inpurose scan measured by the sizing device the outer peripheral surface of the cylindrical portion
While the second grinding stone finish grinding to a predetermined diameter
2 steps, the outer peripheral surface is finish-ground to a predetermined diameter.
Second grinding when it is detected by the sizing device
A third step of determining the position of the stone, and after the finish grinding
Position the chamfered portion of the groove at a position directly facing the second grindstone
A fourth step of determining, and the position of the determined second grinding wheel
With respect to the chamfered part of the groove
The fifth step of cutting the second grindstone is provided , so that the following effects can be obtained.
【００４２】すなわち、この発明の研削方法によれば、
上記第１ステップ〜第５ステップを備えることにより、
インプロセス測定が可能な被加工物の円柱状部の外周面
に対する荒研削及び仕上げ研削とインプロセス測定が不
可能または困難な溝の面取り加工を、１台の研削盤のテ
ーブルに被加工物を装着したままで行うことができ、従
来のように、２台の研削盤のテーブルに被加工物を着脱
してそれぞれの研削するのと異なり、被加工物の着脱時
に発生する被加工物のアライメント不良がなくなり、同
軸度が向上する。このため、インプロセス測定が不可能
または困難な溝部分の研削加工時に被加工物の外径振れ
を原因とする精度不良がなくなり、高精度の加工ができ
る。That is, according to the grinding method of the present invention ,
By including the first to fifth steps,
Outer peripheral surface of cylindrical part of workpiece that can be measured in process
Rough grinding and chamfering are impossible or difficult groove finish grinding and in-process measurement can be performed while wearing the workpiece on one of the grinding machine table, as in the prior art for, two Unlike the case where the workpiece is attached to and detached from the table of the grinding machine, and each of the grinding operations is performed, there is no misalignment of the workpiece that occurs when the workpiece is attached or detached, and the coaxiality is improved. For this reason, when grinding a groove portion in which in-process measurement is impossible or difficult, inaccuracy due to runout of the workpiece during grinding is eliminated, and high-precision machining can be performed.
【００４３】また、被加工物の円柱状部の外周面に対す
る研削時に用いる定寸装置は、ノイズの影響が少ないも
のを使用でき、このため円柱状部の外周面の研削後の仕
上げ径を正確に測定することができ、研削終了後の第２
砥石の砥石台の熱変位の補正を正確に行うことで、第２
砥石の位置を正確に求めることができる。そして、被加
工物のインプロセス測定が不可能または困難な溝部分の
面取り加工は、上記研削終了時に求めた第２砥石の位置
を基準に切り込むことで行われるため、溝部分の加工精
度が向上する。Further, a sizing device used for grinding the outer peripheral surface of the columnar portion of the workpiece can be used with less influence of noise. Therefore , the outer peripheral surface of the cylindrical portion is ground. Finished diameter after finishing can be measured accurately, and the second
By accurately correcting the thermal displacement of the grindstone head,
The position of the grindstone can be determined accurately. And in the groove part where in-process measurement of the workpiece is impossible or difficult
In the chamfering process, the position of the second grinding wheel obtained at the end of the grinding
Since the cutting is performed based on the reference, the processing accuracy of the groove portion is improved.
【００４４】さらに、大径の第１砥石で効率よく被加工
物の円柱状部の外周面を荒研削した上で、溝部分の面取
り加工可能な小径の第２砥石によって仕上げ径に達する
まで研削を行い、その時の第２砥石の位置を基準にして
切り込むことによりインプロセス測定が不可能または困
難な溝部分の面取り加工を行うので、精度と能率の双方
とも高い研削が可能となる。また、インプロセス測定が
可能な被加工物の円柱状部外周面の研削とインプロセス
測定が不可能な溝部分の面取り加工に従来は２台用いて
いた研削盤が、この発明では１台の研削盤ですむので、
設備コストを低減できる。Further, after the outer peripheral surface of the columnar portion of the work is roughly ground with a large-diameter first grindstone efficiently , the groove portion is chamfered.
Grinding is performed using a small-diameter second grindstone that can be machined until the finish diameter is reached. Based on the position of the second grindstone at that time,
Since Lee down process measurement performs chamfering impossible or difficult groove portions by cutting, thereby enabling a high grinding both accuracy and efficiency. Also, in-process measurement
Grinding and in-process of outer peripheral surface of cylindrical part of possible workpiece
Conventionally, two grinders are used for chamfering grooves where measurement is impossible, but in the present invention only one grinder is required.
Equipment costs can be reduced.
【図面の簡単な説明】[Brief description of the drawings]
【図１】この発明の第１実施例による研削方法を行う複
合研削盤を示した概略平面図FIG. 1 is a schematic plan view showing a composite grinding machine that performs a grinding method according to a first embodiment of the present invention.
【図２】この発明の第１実施例による被加工物と砥石と
の関係を工程順に示した説明図FIG. 2 is an explanatory view showing a relationship between a workpiece and a grindstone according to a first embodiment of the present invention in the order of steps;
【図３】第１実施例による研削方法のフローチャートFIG. 3 is a flowchart of a grinding method according to the first embodiment.
【図４】第１実施例による被加工物の溝の両側部分を面
取り研削する状態を示した部分横断面図FIG. 4 is a partial cross-sectional view showing a state where both sides of a groove of a workpiece according to the first embodiment are chamfered and ground;
【図５】この発明の第２実施例による被加工物と砥石と
の位置関係を示した説明図FIG. 5 is an explanatory diagram showing a positional relationship between a workpiece and a grindstone according to a second embodiment of the present invention.
【図６】この発明の第３実施例による被加工物と砥石と
の位置関係を示した説明図FIG. 6 is an explanatory diagram showing a positional relationship between a workpiece and a grindstone according to a third embodiment of the present invention.
【図７】従来例の研削方法を工程順に示した説明図FIG. 7 is an explanatory view showing a conventional grinding method in the order of steps.
【図８】従来例の研削方法による被加工物の溝の両側部
分を面取り研削する状態を示した部分横断面図FIG. 8 is a partial cross-sectional view showing a state where both sides of a groove of a workpiece are chamfered by a conventional grinding method.
１ 被加工物 ２ 溝 １１ ベッド １２ テーブル １４ 第２砥石台 １５ テーブル移動用サーボモータ １９ 主軸回転用モータ ２０ 主軸 ２２ エンコーダ ２４ 第２砥石台移動用サーボモータ ２４ａ エンコーダ ２８ 第２砥石駆動装置 ３０ 第２砥石軸 ３２ 第２砥石 ３３ 主軸側センタ ３４ 心押台側センタ ４０ 数値制御装置 ４１ 中央処理装置 ４２ メモリ ４９ 定寸装置 DESCRIPTION OF SYMBOLS 1 Workpiece 2 Groove 11 Bed 12 Table 14 2nd grindstone table 15 Servo motor for table movement 19 Spindle rotation motor 20 Main shaft 22 Encoder 24 2nd grindstone table movement servomotor 24a Encoder 28 Second grindstone drive device 30 Second Grinding wheel shaft 32 Second grindstone 33 Spindle side center 34 Tailstock side center 40 Numerical controller 41 Central processing unit 42 Memory 49 Sizing device
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平１−289651（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B24B 19/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-289651 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B24B 19/00
Claims (1)
部の円周方向に等間隔に設けられているとともに円柱状
部の軸方向の一部に延在する複数の溝とを有する被加工
物の研削方法であって、 前記円柱状部の外周面を荒研削する大径の第１砥石と、
前記外周面の仕上げ研削と前記溝の面取り加工を行う小
径の第２砥石とを備え、 前記円柱状部の外周面を前記第１砥石で荒研削する第１
ステップと、 前記荒研削後の前記円柱状部の外周面を定寸装置でイン
プロセス測定しながら前記第２砥石で所定の径まで仕上
げ研削する第２ステップと、 前記外周面が所定の径まで仕上げ研削されたことが前記
定寸装置によって検出された時の第２砥石の位置を求め
る第３ステップと、 前記仕上げ研削後に前記溝の面取り加工部を前記第２砥
石に正対する位置に割り出す第４ステップと、 前記求められた第２砥石の位置を基準にして前記割り出
された溝の面取り加工部に対し前記第２砥石を切り込む
第５ステップとを備える ことを特徴とする研削方法。1. A columnar portion and a columnar portion formed on an outer peripheral surface of the columnar portion.
Are provided at equal intervals in the circumferential direction of the part and are cylindrical
Having a plurality of grooves extending in an axial part of the portion
An object grinding method, comprising: a large-diameter first grindstone for rough grinding an outer peripheral surface of the cylindrical portion;
Small grinding for finishing grinding of the outer peripheral surface and chamfering of the groove
A second grindstone having a diameter, wherein the outer peripheral surface of the cylindrical portion is roughly ground with the first grindstone.
Step, the outer peripheral surface of the cylindrical portion after the rough grinding is
Finish to a specified diameter with the second whetstone while measuring the process
The second step of grinding, and that the outer peripheral surface has been finish-ground to a predetermined diameter,
Find the position of the second grinding wheel when it is detected by the sizing device
A third step, and after the finish grinding, the chamfered portion of the groove is subjected to the second grinding.
A fourth step of determining a position facing the stone, and determining the position based on the determined position of the second grinding wheel.
Cut the second grinding stone into the chamfered part of the groove
And a fifth step .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25622592A JP3241453B2 (en) | 1992-09-25 | 1992-09-25 | Grinding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25622592A JP3241453B2 (en) | 1992-09-25 | 1992-09-25 | Grinding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06246613A JPH06246613A (en) | 1994-09-06 |
| JP3241453B2 true JP3241453B2 (en) | 2001-12-25 |
Family
ID=17289677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25622592A Expired - Lifetime JP3241453B2 (en) | 1992-09-25 | 1992-09-25 | Grinding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3241453B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2513227B2 (en) * | 1987-04-30 | 1996-07-03 | ソニー株式会社 | Two-color molding die device |
| CN107571107B (en) * | 2017-10-17 | 2019-03-29 | 南京纽美瑞数控科技有限公司 | A kind of internal grinding replacement grinding wheel exempts from the method for grinding to knife |
| CN113352172A (en) * | 2021-07-05 | 2021-09-07 | 成都立海同创智能科技有限公司 | Automatic polishing device and polishing method for wheel steel ring welding seam |
-
1992
- 1992-09-25 JP JP25622592A patent/JP3241453B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06246613A (en) | 1994-09-06 |
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