JPS60172452A - Grinding for circular corner part - Google Patents

Grinding for circular corner part

Info

Publication number
JPS60172452A
JPS60172452A JP2815584A JP2815584A JPS60172452A JP S60172452 A JPS60172452 A JP S60172452A JP 2815584 A JP2815584 A JP 2815584A JP 2815584 A JP2815584 A JP 2815584A JP S60172452 A JPS60172452 A JP S60172452A
Authority
JP
Japan
Prior art keywords
grinding
grinding wheel
cutting
cutting start
shoulder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2815584A
Other languages
Japanese (ja)
Other versions
JPH0661688B2 (en
Inventor
Hitoshi Akaha
赤羽 仁史
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyoda Koki KK
Original Assignee
Toyoda Koki KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyoda Koki KK filed Critical Toyoda Koki KK
Priority to JP2815584A priority Critical patent/JPH0661688B2/en
Publication of JPS60172452A publication Critical patent/JPS60172452A/en
Publication of JPH0661688B2 publication Critical patent/JPH0661688B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

PURPOSE:To permit the efficient work which is free from interference in dividing and has little useless time by rapidly feeding an abrasive wheel to an intermediate position separated by a prescribed amount in the separation direction from the shoulder part and positioning the abrasive wheel at the next cutting- in starting position in the shoulder-part direction at the more slow speed. CONSTITUTION:Though cutting-in and dividing operation are carried-out from each cutting-in starting position A, each of the starting point and end point within a range for the transfer of an abrasive wheel G at a high feed speed is at an intermediate position C shifted by a certain distance Lr in the separating direction from a shoulder part Wb with respect to the cutting-in starting position A, and therefore, if Lr is proper, the interference of the abrasive wheel G onto a circular corner part Wc or Wb in dividing process is prevented, and the abrasive wheel G contacts with the circular corner part Wc in the process in which the abrasive wheel G advances to the cutting-in starting position A from the intermediate position C in the vacant grinding feed. Therefore, the abrasive wheel G and the workpiece W are not damaged.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、工作物に形成された円弧状隅部を、この隅部
よりも半径の小さな頂部を有する砥石車を用いてプラン
ジ研削するようにした研削方法に関するものである。
[Detailed Description of the Invention] <Industrial Application Field> The present invention provides a method for plunge grinding an arcuate corner formed in a workpiece using a grinding wheel having an apex with a smaller radius than the corner. The present invention relates to a grinding method.

〈従来技術〉 従来においては、円弧状隅部を円筒側よりプランジ研削
する場合、第1図に示すように、円弧状の隅部を一定の
角度毎に分割するとともに、各分割位置において円弧隅
部の仕−ヒげ面Sc′から砥石車Gの行路方向に一定距
離だけ離間した位置を切込開始位置A1〜A5に定め、
砥石車Gを各分割位置の切込開始位置A1〜A5に順次
位置決めした後、各分割位置においてこの切込開始位置
A1〜A5から切込前進端B1〜B5まで砥石車を研削
送り速度で移動させてプランジ研削を行っていた。そし
て、かかる研削方法では、各分割位置における切込開始
位置A1〜A5を加工前の表面S c、になるべく近づ
けないと、研削に関与しない空研削の時間が長くなるた
め、切込開始位置A1〜A5を加工前の表面Scになる
べく近づけることが好ましい。
<Prior art> Conventionally, when plunge grinding an arcuate corner from the cylindrical side, the arcuate corner is divided into parts at fixed angles, and the arcuate corner is cut at each division position, as shown in Fig. 1. The cutting start positions A1 to A5 are set at positions spaced apart by a certain distance in the travel direction of the grinding wheel G from the cutting surface Sc' of the part,
After sequentially positioning the grinding wheel G at the cutting start positions A1 to A5 of each division position, the grinding wheel is moved at the grinding feed rate from the cutting start positions A1 to A5 to the cutting advance ends B1 to B5 at each division position. Plunge grinding was performed. In such a grinding method, unless the cut start positions A1 to A5 at each division position are brought as close as possible to the surface S before machining, the idle grinding time that does not involve grinding will be longer, so the cut start position A1 It is preferable to bring ~A5 as close as possible to the surface Sc before processing.

しかしながら、このように切込開始位置A1〜A5を加
工前の表面に近づけると、肩部wbに近い部分での割出
工程、すなわち、砥石車Gを早送り速度で切込開始位置
A3からA4に割出す工程Iにおいて、砥石車Gが工作
物Wに干渉し、工作物Wや砥石車Gに損傷を与える。し
たがって、従来の研削方法では切込開始位置A1〜A5
を加工前の表面Scに対してあまり近づけることはでき
ず、加工に関与しない空研削時間の増大を招いていた。
However, when the cutting start positions A1 to A5 are brought closer to the surface before machining, the indexing process is performed at a portion close to the shoulder wb, that is, the grinding wheel G is moved from the cutting start position A3 to A4 at a rapid traverse speed. In the indexing step I, the grinding wheel G interferes with the workpiece W, causing damage to the workpiece W and the grinding wheel G. Therefore, in the conventional grinding method, the cutting start positions A1 to A5 are
could not be brought very close to the surface Sc before machining, leading to an increase in idle grinding time that is not involved in machining.

〈発明の目的〉 そこで本発明は、切込開始位置を加工前の表面に近づけ
ても、砥石車の割出工程において砥石車が工作物に干渉
しないようにして、加工に関与しない無駄時間を減少さ
せることを目的とするものである。
<Purpose of the Invention> Therefore, the present invention prevents the grinding wheel from interfering with the workpiece in the grinding wheel indexing process even if the cutting start position approaches the surface before processing, thereby reducing wasted time not involved in processing. The purpose is to reduce

〈発明の構成〉 本発明は、次の分割位置における切込開始位置に対し肩
部から遠ざかる方向に所定■離間した中間位置まで砥石
車を早送り速度で移動させ、この後、砥石車を前記中間
位置から前記肩部方向に前記早送り速度より遅い速度で
移動させて次の分割位置における切込開始位置に位置決
めするようにしたことを特徴とするものである。
<Structure of the Invention> The present invention moves the grinding wheel at a rapid traverse speed to an intermediate position that is a predetermined distance away from the shoulder in the direction away from the cutting start position at the next dividing position, and then moves the grinding wheel to the intermediate position. It is characterized in that the cutting tool is moved from the position toward the shoulder portion at a speed lower than the rapid feed speed to position the cutting start position at the next dividing position.

〈実施例〉 以下本発明の実施例を図面に基づいて説明する。<Example> Embodiments of the present invention will be described below based on the drawings.

第2図は本発明にかかる研削方法を用いた円弧状隅部の
研削サイクルを示し、Gば酊(石車、Wは工作物である
。砥石車〔ユの行路は、工作物Wの軸線に対して所定の
鋭角度をなして交差し、砥石車Gの外周面には、工作物
軸線と平行な第1研削面Gaと、この第1研削面Gaと
直交する第2研削面Gbとが形成され、これらの研削面
Ga、Gbの間には半径rの円弧状頂部Gpが形成され
ている。
FIG. 2 shows a grinding cycle of an arcuate corner using the grinding method according to the present invention. The grinding wheel G has a first grinding surface Ga parallel to the workpiece axis and a second grinding surface Gb orthogonal to the first grinding surface Ga. is formed, and an arc-shaped apex Gp with a radius r is formed between these ground surfaces Ga and Gb.

工作物Wの円弧状隅部Wcを加工する場合、まず円弧状
隅部Wcを一定の角度θ毎に分割するとともに、各分割
位置において円弧状隅部Wcの仕上げ面Sc′に砥石車
Gの頂部Gpが接する砥石車Gの位置を切込前進端B1
〜B5、この切込前進端B1−85から砥石車Gの行路
方向に一定量後退し、かつ頂部Gpの表面が円弧状隅部
Wcの加工前の表面Scかられずかに後退する位置を切
込開始位置A1〜A5に定め、また、この切込開始位置
A1〜A5に対し肩部wbから離れる方向に一定ffi
 Al1間した位置を中間位置01〜c5に定める。
When machining an arcuate corner Wc of a workpiece W, the arcuate corner Wc is first divided into parts at fixed angles θ, and at each division position, a grinding wheel G is applied to the finished surface Sc' of the arcuate corner Wc. Cut the position of the grinding wheel G where the top Gp touches the forward end B1
~B5, cut a position where the cutting advance end B1-85 is retreated by a certain amount in the travel direction of the grinding wheel G, and the surface of the top Gp is slightly retreated from the unprocessed surface Sc of the arcuate corner Wc. The cutting start positions A1 to A5 are determined, and a constant ffi is set at the cutting start positions A1 to A5 in the direction away from the shoulder wb.
The positions between Al1 are determined as intermediate positions 01 to c5.

そして、まず最初に頂部Gpの中心を円筒側の最初の切
込開始位置A1に位置決めした後、砥石車Gを切込前進
端B1まで移動させて円弧状隅部Wcの一部をプランジ
研削し、この後、切込開始位置A1に対して肩部wbか
ら離間する方向に一定N離間した前記中間位置CIまで
早送り速度で後退させる。
First, the center of the top Gp is positioned at the first cutting start position A1 on the cylindrical side, and then the grinding wheel G is moved to the cutting forward end B1 to plunge-grind a part of the arcuate corner Wc. After that, the cutting start position A1 is retreated at a rapid traverse speed to the intermediate position CI, which is a certain distance N away from the shoulder wb.

このようにして最初のプランジ研削が完了すると、砥石
車Gを円弧状隅部Wcに沿って早送り速=5一 度で移動させ、頂部Gpの中心を次の分割位置における
中間位置C2に位置決めする。そして、この後、砥石車
Gを早送り速度より充分低い空研削速度で肩部wb側へ
移動させて、頂部Gpの中心を次の切込開始位置A2に
位置決めする。
When the first plunge grinding is completed in this way, the grinding wheel G is moved along the arcuate corner Wc at a rapid feed rate of 5 times, and the center of the top Gp is positioned at the intermediate position C2 at the next dividing position. Then, the grinding wheel G is moved toward the shoulder wb side at a dry grinding speed sufficiently lower than the rapid feed speed, and the center of the top Gp is positioned at the next cutting start position A2.

以下同様の動作を繰返すことによって各分割位置におい
てプランジ研削が順次行われ、割出しの度に砥石車Gの
第2研削面Gbが肩部wbに対して次第に接近するが、
砥石車Gを早送り速度で次の分割位置に移動させる場合
には、次の分割位置における切込開始位置Aに対して肩
部W bから遠ざかる方向に一定fit Al1間した
中間位置Cへ移動されるので、かかる砥石車Gの割出工
程において砥石車Gが工作物Wに干渉することがない。
Thereafter, by repeating the same operation, plunge grinding is performed at each divided position in sequence, and the second grinding surface Gb of the grinding wheel G gradually approaches the shoulder portion wb each time it is indexed.
When the grinding wheel G is moved to the next divided position at a rapid traverse speed, it is moved to an intermediate position C that is spaced by a constant fit Al1 in the direction away from the shoulder Wb with respect to the cutting start position A at the next divided position. Therefore, the grinding wheel G does not interfere with the workpiece W during the indexing process of the grinding wheel G.

したがって、各分割位置に才iJる切込開始位置A1〜
A5を円弧状隅部Wcの加工前の表面に対して接近させ
ることができる。
Therefore, the cutting start position A1~
A5 can be brought close to the unprocessed surface of the arcuate corner Wc.

なお、研削箇所が肩部wbに近づいた場合には、中間位
置Cから研削送り開始位置Aへの移動の途中で砥石車G
が円弧状隅部Wcに接触し研削が行−−6− われるが、この工程における送り速度は、早送り速度よ
りも充分低い空研削送りで正常な研削が可能であるので
、かかる接触により工作物Wや砥石車Gに扛II訪を与
えることはない。
In addition, when the grinding point approaches the shoulder part wb, the grinding wheel G is moved from the intermediate position C to the grinding feed start position A.
comes into contact with the arcuate corner Wc and grinding is carried out.However, the feed speed in this process is sufficiently lower than the rapid feed speed to allow normal grinding, so this contact causes the workpiece to W and Grindwheel G will not be given a second attack.

また、かかる中間位置Cと切込開始位置Aとの間の距団
1は、割出工程における砥石車Gと肩部Wbとの間の接
触により研削される肩部Wbの研削代に応じた微少距離
に設定される。このため、各分割位置における切込開始
位置A1〜A5を後方にずらずことによって割出時にお
ける干渉を防止する方式に比べ、研削に関与しない無駄
時間の増大を少なくすることができる。
Further, the distance group 1 between the intermediate position C and the cutting start position A corresponds to the grinding allowance of the shoulder Wb that is ground by contact between the grinding wheel G and the shoulder Wb in the indexing process. Set to a very small distance. Therefore, compared to a method in which interference during indexing is prevented by shifting the cutting start positions A1 to A5 at each divided position backward, an increase in wasted time not involved in grinding can be reduced.

すなわち、第3図に示されるように、切削送りの送り方
向は肩部wbの表面に対して斜交する方向であるため、
切込開始位置A1〜A5を後方にずらずことによって干
渉を避けるために必要な送り量の増加量L r ’は大
きな値になるのに対し、中間位置Cから切込開始位置A
への移動方向は肩部W bの表面と直交する方向である
ため、割出時における干渉を防止するために必要な移動
量の増加量I−rば少なく、研削に関すしない無駄時間
を減少できる。
That is, as shown in FIG. 3, since the cutting feed direction is oblique to the surface of the shoulder portion wb,
By shifting the cutting start positions A1 to A5 backward, the amount of increase in feed amount L r ' required to avoid interference becomes a large value, whereas from the intermediate position C to the cutting start position A
Since the direction of movement is perpendicular to the surface of the shoulder Wb, the amount of increase in movement I-r required to prevent interference during indexing is small, reducing wasted time related to grinding. can.

次にかかる研削方法を用いて円弧状隅部WCの粗研削を
行う研削盤の実施例を説明する。第4図において21は
、ベッド20上の前面に形成された案内面に沿ってX軸
方向へ摺動可能に案内されたワークテーブルで、このワ
ークテーブル21はサーボモータ22によって駆動され
る送りねじ23に螺合している。このワークテーブル2
1−1−には主軸台25と心浬台2 (iが載置され、
この主軸台25と心押台26のセンタによって、円筒部
Waとこれに隣接する肩部wbとの間に円弧状の隅部W
cが形成された工作物Wが回転可能に支持されている。
Next, an embodiment of a grinding machine that performs rough grinding of the arcuate corner portion WC using this grinding method will be described. In FIG. 4, 21 is a work table that is slidably guided in the X-axis direction along a guide surface formed on the front surface of the bed 20, and this work table 21 is driven by a feed screw driven by a servo motor 22. It is screwed into 23. This work table 2
On 1-1-, the headstock 25 and the spindle stand 2 (i are placed,
The centers of the headstock 25 and the tailstock 26 form an arcuate corner W between the cylindrical portion Wa and the adjacent shoulder portion Wb.
A workpiece W having a shape c formed thereon is rotatably supported.

また、27はアンギュラ形の砥石車Gを軸架する砥石台
で、この砥石台27ばヘソl’ 2 rl上に形成され
た案内面に沿って前記Z軸と鋭角度αをなして交差する
X軸方向へ摺動可能に案内されており、ナンド28を介
して、サーボモータ30に連結された送りねじ31に螺
合している。
Further, reference numeral 27 denotes a grinding wheel stand on which an angular-shaped grinding wheel G is mounted, and this grinding wheel stand 27 intersects the Z-axis at an acute angle α along a guide surface formed on the heel l' 2 rl. It is slidably guided in the X-axis direction and is screwed into a feed screw 31 connected to a servo motor 30 via a NAND 28 .

一方、40ばコンピュータ等によって構成される数値制
御装置を示し、メモリ41、パルス発生回路42、デー
タ入力装置43が接続されている。
On the other hand, numeral 40 indicates a numerical control device constituted by a computer or the like, to which a memory 41, a pulse generation circuit 42, and a data input device 43 are connected.

前記パルス発生回路42は、数値制御装置40から出力
される各軸毎の移動量と移動速度のデータを内部レジス
タDx、Fx、Dz、Fzに受入れ、これに応じてZ軸
およびZ軸にパルスを同時に分配するもので、この分配
パルスは、X軸周サーボモータ30およびZ軸周サーボ
モータ22をそれぞれ駆動するドライブユニットDUX
、DUZに供給されるようになっている。また、研削加
工に必要な数値制御データは運転開始に先立ってデータ
入力装置43から入力され、メモリ41内に記憶される
ようになっている。
The pulse generation circuit 42 receives data on the movement amount and movement speed for each axis output from the numerical control device 40 into internal registers Dx, Fx, Dz, and Fz, and generates pulses on the Z-axis and the Z-axis accordingly. This distributed pulse is distributed to the drive unit DUX that drives the X-axis circumferential servo motor 30 and the Z-axis circumferential servo motor 22, respectively.
, DUZ. Further, numerical control data necessary for the grinding process is inputted from a data input device 43 prior to the start of operation, and is stored in the memory 41.

今、メモリ41内に記憶された数値制御データにより、
砥石車Gの頂部中心Opが第2図にA1として示す最初
の切込開始位置に位置決めされた後、時計方向旋回で円
弧状隅部をプランジ研削することを指令する特定のGコ
ードが読出されると、数値制御装置40は第5図に示す
プランジ研削処=9− 理の動作を行う。
Now, with the numerical control data stored in the memory 41,
After the top center Op of the grinding wheel G is positioned at the initial cutting start position shown as A1 in FIG. Then, the numerical control device 40 performs the plunge grinding operation shown in FIG.

まず、ステップ(50)において角度位置データφを零
リセットした後、ステップ(51)にて研削送りWLf
に応じた数の正パルスをZ軸に分配し、砥石車Gの頂部
外周面が円弧隅部WCの仕上面3 c /に位置するま
で砥石車Gを前進させる。
First, in step (50), the angular position data φ is reset to zero, and then in step (51), the grinding feed WLf is
A number of positive pulses corresponding to the number are distributed to the Z axis, and the grinding wheel G is advanced until the top outer circumferential surface of the grinding wheel G is located at the finished surface 3 c / of the arc corner WC.

これにより、円弧状隅部WCの円筒部Waに隣接する部
分がプランジ研削される。
As a result, the portion of the arcuate corner portion WC adjacent to the cylindrical portion Wa is plunge-ground.

このようにして、研削送りが完了すると、数値制御装置
40はステップ(52)において、研削送り量L fに
応じた数の負パルスをZ軸に早送り速度で分配すると同
時に、X軸方向の逃がし距離Lrに応じた数の正パルス
をZ軸に早送り速度で分配し、砥石車Gを中間位置C1
まで後退させる。
When the grinding feed is completed in this way, in step (52), the numerical controller 40 distributes a number of negative pulses corresponding to the grinding feed amount Lf to the Z-axis at a rapid traverse speed, and at the same time distributes the negative pulses in the X-axis direction. A number of positive pulses corresponding to the distance Lr are distributed to the Z axis at a rapid traverse speed, and the grinding wheel G is moved to the intermediate position C1.
back up to.

そしてこの後、ステップ(53)においてφが90度で
ないことを判別すると、ステップ(55)において砥石
車Gの頂部中心Opを次の分割位置における中間位置C
2まで移動さ−Uるための各軸移動量IX、IZを(1
)式、(2)式に基づいて演算する。
After that, when it is determined in step (53) that φ is not 90 degrees, in step (55) the top center Op of the grinding wheel G is moved to an intermediate position C at the next dividing position.
The amount of movement of each axis IX, IZ to move up to 2 is (1
) and (2).

10− IX−[(R−r ) cos θ− (R−r ) cos (φ十θ))/sinα・・・
(1)IZ−((R−r ) sin (φ+θ)−(
ll−r) sinφ)十IXcosα・・・(2)な
お、Rば円弧状隅部Wcの仕上げ半径を示し、rは砥石
車Gの頂部半径を示す。
10-IX-[(R-r) cos θ- (R-r) cos (φ10θ))/sin α...
(1) IZ-((R-r) sin (φ+θ)-(
ll-r) sinφ) 1IXcosα (2) Note that R represents the finished radius of the arcuate corner Wc, and r represents the radius of the top of the grinding wheel G.

ステップ(56)は、ステップ(55)において演算さ
れた各軸方向の移動量rx、rzに応じた数のパルスを
それぞれX軸とZ軸に同時に早送り速度で分配するステ
ップであり、これにより、砥石車Gは次の中間位置C2
まで早送り速度で移動される。そして、これに続くステ
ップ(57)において逃がし距1iSet r、rに応
じた数の負パルスをZ軸に分配し、砥石車Gの頂部中心
opを次の分割位置における切込開始位置A2に位置決
めする。
Step (56) is a step in which a number of pulses corresponding to the movement amounts rx and rz in each axis direction calculated in step (55) are simultaneously distributed to the X-axis and Z-axis at a rapid traverse speed. Grinding wheel G is at the next intermediate position C2
is moved at fast forward speed. Then, in the following step (57), the number of negative pulses corresponding to the relief distance 1iSet r, r is distributed to the Z axis, and the top center OP of the grinding wheel G is positioned at the cutting start position A2 at the next dividing position. do.

このようにして切込開始位置A2への位置決めが完了す
ると、数値制御装置40はステップ(58)にて角度位
置データφに割出角度θを加えて角度位置データφを更
新した後、ステップ(51)へ戻る。
When positioning to the cutting start position A2 is completed in this way, the numerical control device 40 updates the angular position data φ by adding the index angle θ to the angular position data φ in step (58), and then updates the angular position data φ in step (58). Return to 51).

これにより、上記の動作が111び行われ、り込開始位
置A2からのリノ込めが行われノコ後、61(石車Gが
中間位置C2まで甲送り速度で後退され、この後、次の
中間位置C3まで甲送り速度で移り!1」された後、次
の切込開始位置へ3まで空研削送りで移動される。
As a result, the above-mentioned operation is performed 111 times, lino-filling is performed from the cutting-in start position A2, and after sawing, 61 (the stone wheel G is retreated at the instep feed speed to the intermediate position C2, and then the next intermediate position After being moved to position C3 at the instep feed rate!1'', it is moved to the next cutting start position at idle grinding feed to 3.

以下同様の動作が繰返されるごとによって、各切込開始
位置へからの切込めと7;す出し動作が行われるが、砥
石車Gの割出動作の内、砥石車Gが甲送り速度で移動す
る範囲の始点と終点は、切込開始位置Aに対して肩部W
 bから!131I間する方向に一定距離L rだけず
れた中間位置Cであるため、距離Lrを適切な大きさと
することにより、砥石車Gが肩部wbに近づいても、そ
の割出工程において砥石車Gが円弧状隅部Wcもしくは
肩部W1)に干渉することはなく、砥石車Gが空研削送
りで移動する中間位置Cから切込開始位置Aに至る過程
で砥石車Gが円弧状隅部Wcに接触する。
Thereafter, each time the same operation is repeated, the cutting from each cutting start position and the starting operation are performed, but during the indexing operation of the grinding wheel G, the grinding wheel G moves at the instep feed speed. The start and end points of the range are at the shoulder W with respect to the cutting start position A.
From b! Since the intermediate position C is shifted by a certain distance L r in the direction between 131 does not interfere with the arc-shaped corner Wc or the shoulder W1), and the grinding wheel G does not interfere with the arc-shaped corner Wc or the shoulder Wc during the process from the intermediate position C where the grinding wheel G moves by idle grinding feed to the cutting start position A. come into contact with.

したがって、砥石車Gが円弧状隅部Wcに接触しても砥
石車Gや工作物Wに1t1傷をLi2えることばない。
Therefore, even if the grinding wheel G comes into contact with the arcuate corner Wc, there is no possibility of causing 1t1 scratches Li2 on the grinding wheel G or the workpiece W.

なお、逃がし距離L rは、砥石車Gが割出]−程でI
作物Wに干渉しない範囲で小さな値に設定され、加工に
関与、シない無駄時間は最小限となる。
In addition, the relief distance L r is determined by the grinding wheel G] - I
It is set to a small value within a range that does not interfere with the crop W, and the wasted time involved in processing is minimized.

また、第6図に示すように、研削完了後において砥石車
Gを切込開始位置Aに戻し、この後、次の分割点に対応
する中間位置Cへ砥石車Gを早送り速度で移動させ、し
かる後に砥石車Gを空研削送りで切込開始位置Aに位置
決めするようにしてもよい。
Further, as shown in FIG. 6, after grinding is completed, the grinding wheel G is returned to the cutting start position A, and then the grinding wheel G is moved at a rapid speed to an intermediate position C corresponding to the next dividing point, Thereafter, the grinding wheel G may be positioned at the cutting start position A by idle grinding feed.

〈発明の効果〉 以上述べたように本発明においては、次の分割位置にお
ける切込開始位置に対し肩部から遠ざかる方向に所定量
離間した中間位置まで砥石車を早送り速度で移動させ、
砥石車を前記中間位置から前記刑部方向に前記早送り速
度より遅い速度で移動さ・l・て次の分割位置における
切込開始位置に位T1.決めするようにしたので、砥石
車の切込開始位置を円弧隅部の加工前の表面に近づけて
も、砥石車を次の切込開始位置に割出す工程において砥
石13− 車が早送り速度で工作物に干渉することかないだけでな
く、干渉を避けるために必要な空送りMを最も少ない値
にすることができる。従って、割出時において干lルが
なく、かつ加圧に関!jしない無駄時間も少ないur率
のよい加1.が行なえる利点がある。
<Effects of the Invention> As described above, in the present invention, the grinding wheel is moved at a rapid traverse speed to an intermediate position that is a predetermined distance away from the shoulder with respect to the cutting start position at the next dividing position,
The grinding wheel is moved from the intermediate position toward the cutting part at a speed slower than the rapid feed speed, and is brought to the cutting start position at the next dividing position T1. As a result, even if the cutting start position of the grinding wheel approaches the unprocessed surface of the arc corner, the grinding wheel 13-wheel will move at a rapid traverse speed in the process of indexing the grinding wheel to the next cutting start position. Not only does it not interfere with the workpiece, but also the blank feed M required to avoid interference can be minimized. Therefore, there is no problem when indexing, and there is no need to worry about pressurization! Good UR rate with less wasted time 1. It has the advantage that it can be done.

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

第1図は従来の研削方法に、1、る1il(石車の移動
1IllL跡を示す図、第2図〜第6図番51本発明の
実施例を示すもので、第2図は本発明の研削方法によっ
て円弧状隅部を加]:する場合の砥石1丁の移動量b+
Aiを示す図、第3図番才切込開始位置を後方にずらし
た場合と、本発明の研削方法による場合との空研削送り
量の増加量を比較する図、第4図はω[削盤の概略平面
図に制御回路を併記した図、第5図は第4図における数
値制御装置40の動作を示すフローチャート、第6図は
本発明の変形例を示す図である。 21・・・ワークテーブル、22.30・・・サーボモ
ータ、25・・・主軸台、26・・・心14− 押台、27・・・砥石台、40・・・数値制御装置、4
1・・・メモリ、42・・・パルス発生回路、(51)
・・・砥石車を切込む工程、(52)・・・砥石車を中
間位置へ戻す工程、(56)・・・砥石車を次の中間位
置へ移動させる工程、(57)・・・砥石車を次の切込
開始位置へ移動さ一ロる工程、G・・・砥石車、Ga・
・・第1研削面、Gb・・・第2研削面、cp・・・頂
部、Op・・・頂部中心、W・・・工作物、Wa・・・
円筒部、wb・・・肩部、Wc・・・隅部。 特許出願人 豊田工機株式会社 15−
Fig. 1 shows the conventional grinding method. The amount of movement b+ of one grindstone when adding an arcuate corner using the grinding method
Figure 3 is a diagram showing Ai, Figure 3 is a diagram comparing the amount of increase in dry grinding feed amount when the cutting start position is shifted backward and when the grinding method of the present invention is used, and Figure 4 is a diagram showing ω [grinding FIG. 5 is a flowchart showing the operation of the numerical control device 40 in FIG. 4, and FIG. 6 is a diagram showing a modification of the present invention. 21... Work table, 22. 30... Servo motor, 25... Headstock, 26... Core 14-press stand, 27... Grinding head, 40... Numerical control device, 4
1...Memory, 42...Pulse generation circuit, (51)
... Step of cutting the grinding wheel, (52) ... Step of returning the grinding wheel to the intermediate position, (56) ... Step of moving the grinding wheel to the next intermediate position, (57) ... Process of grinding the wheel The process of moving the wheel to the next cutting start position, G... Grinding wheel, Ga...
...first ground surface, Gb...second ground surface, cp...top, Op...center of top, W...workpiece, Wa...
Cylindrical part, wb...shoulder part, Wc...corner part. Patent applicant Toyota Machinery Co., Ltd. 15-

Claims (1)

【特許請求の範囲】[Claims] (1)工作物の円筒部とこれに隣接する肩部との境界に
形成された円弧状の隅部を、この隅部よりも半径の小さ
い円弧状の頂部を形成した砥石車で研削加工する方法で
あって、前記円弧状の隅部を所定の間隔で分割する各分
割位置において前記隅部の仕上面から前記砥石車の行路
方向に所定距離離間した位置を各分割位置における切込
開始位置に定めるとともに、各分割位置において前記砥
石車を前記切込開始位置から切込前進端まで前記行路に
沿って移動させた後、前記砥石車を前記切込開始位置に
応じた位置まで戻し、この後、次の分割位置における切
込開始位置に対し前記肩部から遠ざかる方向に所定量離
間した中間位置まで砥石車を早送り速度で移動させ、砥
石車を前記中間位置から前記肩部方向に前記早送り速度
より遅い速度で移動させて次の分割位置における切込開
始位置に位置決めするようにしたことを特徴とする円弧
状隅部の研削方法。
(1) Grind the arc-shaped corner formed at the boundary between the cylindrical part of the workpiece and the adjacent shoulder part using a grinding wheel that has an arc-shaped top with a smaller radius than this corner. In the method, the cutting start position at each dividing position where the arc-shaped corner is divided at predetermined intervals is set at a position spaced a predetermined distance from the finished surface of the corner in the travel direction of the grinding wheel. At each division position, the grinding wheel is moved along the path from the cutting start position to the forward cutting end, and then the grinding wheel is returned to a position corresponding to the cutting start position. After that, the grinding wheel is moved at a rapid traverse speed to an intermediate position that is a predetermined distance away from the shoulder with respect to the cutting start position at the next dividing position, and the grinding wheel is rapidly traversed from the intermediate position toward the shoulder. 1. A method for grinding an arcuate corner, characterized by moving at a speed slower than the grinding speed and positioning the cutting start position at the next dividing position.
JP2815584A 1984-02-16 1984-02-16 How to grind arc-shaped corners Expired - Fee Related JPH0661688B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2815584A JPH0661688B2 (en) 1984-02-16 1984-02-16 How to grind arc-shaped corners

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2815584A JPH0661688B2 (en) 1984-02-16 1984-02-16 How to grind arc-shaped corners

Publications (2)

Publication Number Publication Date
JPS60172452A true JPS60172452A (en) 1985-09-05
JPH0661688B2 JPH0661688B2 (en) 1994-08-17

Family

ID=12240861

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2815584A Expired - Fee Related JPH0661688B2 (en) 1984-02-16 1984-02-16 How to grind arc-shaped corners

Country Status (1)

Country Link
JP (1) JPH0661688B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113941868A (en) * 2021-10-22 2022-01-18 兴三星云科技有限公司 Processingequipment for door frame

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113941868A (en) * 2021-10-22 2022-01-18 兴三星云科技有限公司 Processingequipment for door frame

Also Published As

Publication number Publication date
JPH0661688B2 (en) 1994-08-17

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