JPS60161069A - Numerically controlled grinding machine for working multi-step work - Google Patents
Numerically controlled grinding machine for working multi-step workInfo
- Publication number
- JPS60161069A JPS60161069A JP1793484A JP1793484A JPS60161069A JP S60161069 A JPS60161069 A JP S60161069A JP 1793484 A JP1793484 A JP 1793484A JP 1793484 A JP1793484 A JP 1793484A JP S60161069 A JPS60161069 A JP S60161069A
- Authority
- JP
- Japan
- Prior art keywords
- feed
- grinding
- semi
- machining
- grinding wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、多段工作物の研削加工を行う数値制御研削盤
に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a numerically controlled grinding machine for grinding a multi-stage workpiece.
〈従来技術〉
近年、砥石台の暴走により、砥石車が早送り速度もしく
はそれ以上の速度で工作物に衝突することを防止するた
めに、第４図に示すようなシリンダ装置を用いた保安装
置が採用されている。<Prior art> In recent years, in order to prevent the grinding wheel from colliding with the workpiece at rapid traverse speed or higher speed due to runaway of the grinding wheel head, a safety device using a cylinder device as shown in Fig. 4 has been developed. It has been adopted.
かかる保安装置を備えたものにおいては、シリンダ２１
に嵌装されたピストン２２のピストンロッド２３に固着
された係合部材２９がヘット上の固定部材２８に当接す
るまでは砥石台１７を早送り速度で移動できるものの、
保合部材２９が固定部材２８に当接した後は絞り２５の
開度によって決まる安全速度以下の準急連送りでしか砥
石台１７を移動できず、係合部材２９が固定部材２８に
当接する前に早送りを終了する必要がある。このため、
従来においては、第１図に示されるように、保合部材２
９が固定部材２８に当接する前でかつ最大径の箇所ＷＯ
より後方の位置をクリア位置Ｐｉしとし、加工原位置Ｐ
ｏからこのクリア位置１）ｉまでは砥石車Ｇを早送り速
度で移動させ、各加工箇所の加工時においては、このク
リア位置Ｐｉから各加工［箇所に対応した研削送り開始
位置Ｐ ｓｌ、Ｐｓ２．Ｐｓ３まで準急連送りで砥石車
Ｇを前進させるようにしていた。したがって、加工径の
小さな加工箇所においては、早送り速度よりもかなり遅
い準急連送りの量が増大し、サイクルタイムが長くなる
問題があった。In a device equipped with such a safety device, the cylinder 21
Although the grindstone head 17 can be moved at a rapid traverse speed until the engaging member 29 fixed to the piston rod 23 of the piston 22 fitted in the head comes into contact with the fixing member 28 on the head,
After the retaining member 29 comes into contact with the fixed member 28, the grinding wheel head 17 can only be moved by semi-rapid continuous feeding at a speed lower than the safe speed determined by the opening degree of the throttle 25, and before the engaging member 29 contacts the fixed member 28. You need to end fast forwarding. For this reason,
Conventionally, as shown in FIG.
9 is in front of the fixing member 28 and has the maximum diameter WO
The rear position is set as the clear position Pi, and the processing original position P
The grinding wheel G is moved at a rapid traverse speed from o to this clear position 1)i, and when machining each machining location, from this clear position Pi to the grinding feed start position P sl, Ps2 . Until Ps3, the grinding wheel G was advanced in a semi-rapid manner. Therefore, in a machining location where the machining diameter is small, the amount of semi-quick continuous feed, which is much slower than the rapid feed rate, increases, resulting in a problem that the cycle time becomes longer.
すなわち、かかる保安機構を備えたものにおいては、準
急連送りの開始後において係合部材２９が固定部材２８
に当接すると、シリンダ装置２１のピストン２２が相対
的に後退し、この状態は砥石車Ｇがクリア位置Ｐｉまで
後退されても維持されるため、保合部材２９が固定部材
２８に当接す−る位置は前の加工箇所の仕上げ径に応じ
て変化する。したがって、第１図に示すように、大径側
から順番に加工を行う場合には、少なくとも、前の加工
箇所の研削送り開始位置までは早送りできることになる
が、従来においては、この部分においても準急連送りを
行っていたため、加工のサイクルタイムが長くなってい
た。That is, in a device equipped with such a security mechanism, the engaging member 29 is connected to the fixed member 28 after the start of semi-urgent continuous feeding.
, the piston 22 of the cylinder device 21 relatively retreats, and this state is maintained even when the grinding wheel G is retreated to the clear position Pi, so that the retaining member 29 abuts the fixed member 28. - The position changes depending on the finished diameter of the previous machined area. Therefore, as shown in Fig. 1, when machining is performed in order from the large diameter side, it is possible to perform rapid traverse at least up to the grinding feed start position of the previous machining location, but conventionally, even in this part, The machining cycle time was becoming longer due to semi-urgent continuous feeding.
〈発明の目的〉
そこで本発明は、加工済加工箇所の内、最も径の小さな
加工箇所の研削送り開始位置まで砥石車を早送り前進さ
せることにより、サイクルタイムの短縮を計ることを目
的とするものである。<Object of the Invention> Therefore, the object of the present invention is to shorten the cycle time by rapidly moving the grinding wheel forward to the grinding feed start position of the processing part with the smallest diameter among the processed parts. It is.
また、本発明の別の目的は、加工済の加工箇所に対応す
る移動データから次の加工箇所の早送り前進端の位置を
自動決定するようにして、データ入力の容易化をａする
ことを目的とするものである。Another object of the present invention is to facilitate data input by automatically determining the position of the rapid forward end of the next machining location from the movement data corresponding to the machining location that has already been machined. That is.
〈発明の構成〉
第２図は本発明を明示するための全体構成図である。記
憶手段へには、各加工箇所Ｗ１〜Ｗ３のれぞれに対応し
て、工作物の割出しを行うクリア位置Ｐｉから研削送り
開始位置ｐｓ１〜Ｐｓ３までの送り量８１〜Ｓ３が準急
連送り量として記憶されており、続出手段Ｂば、記憶手
段Ａから加工が完了した加工箇所の内、最も径の小さな
加工箇所の準急連送り１ｉｓｉと新たに加工する加工箇
所の準急連送り量Ｓｎとを読出ず。また、演算手段Ｃは
、両送り量の偏差５ｉ−３ｎを演算して準急連送り量Ｓ
ｒを演算する。そして、送り制御手段゛ Ｄば、加工済
加工箇所の準急連送り量Ｓｉだけ砥石車Ｇを早送り速度
で前進させ、ごの後演算された準急連送り量Ｓｒだけ砥
石車Ｇを準急連送りさせて砥石車Ｇを研削送り開始位置
Ｐ ｓ ｎに移動し、この後、研削送りを行う。<Configuration of the Invention> FIG. 2 is an overall configuration diagram for clearly demonstrating the present invention. In the storage means, feed amounts 81 to S3 from the clear position Pi for indexing the workpiece to the grinding feed start positions ps1 to Ps3 are stored as semi-quick continuous feeds corresponding to each of the machining locations W1 to W3. The continuous feed amount 1isi of the machining location with the smallest diameter among the machining locations that have been completed and the semi-urgent continuous feed amount Sn of the machining location to be newly machined are stored as quantities, and the successive means B stores the semi-urgent continuous feed amount 1isi of the machining location with the smallest diameter among the machining locations that have been completed from the storage device A. is not read. Further, the calculation means C calculates the deviation 5i-3n between the two feed amounts and calculates the semi-urgent continuous feed amount S.
Calculate r. Then, the feed control means ゛D advances the grinding wheel G at a rapid feed speed by the semi-rapid continuous feed amount Si of the processed part, and then advances the grinding wheel G by the calculated semi-rapid continuous feed amount Sr. The grinding wheel G is moved to the grinding feed start position Psn, and thereafter, the grinding feed is performed.
〈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３図はアンギュラ形の数値制御研削盤を示すもので、
主軸台ＩＯと心押台１１とによって工作物Ｗを回転可能
に支持するインデックステーブル１２が、工作物軸線に
沿ってベッド１３上に形成された案内面１４に移動可能
に支持され、ベッド１−３に固着されたサーボモータ１
５によりねじ送り機構を介して送り制御される。砥石車
Ｇを軸承した砥石台１７は」工作物軸線と鋭角θをなし
て交差する方向に沿ってヘッドＩ３上に形成された案内
面１８に進退可能に支持され、ヘッド１３に固着された
サーボモータ１９によりねし送り機構を介して送り制御
される。かかるねじ送り機構はサーボモータ１９が指令
パルスに換算してＮパルス分回転すると、砥石台１７が
案内面１８に沿ってＮ×Δｄ／ｓｉｎθ（但しΔｄは１
パルス当りの工作物直径方向への設定移動量）だけ移動
するように構成されており、従って砥石台１７の移動指
令は工作物直径方向の移動量１こて指令される。なお、
２０はヘット１３上に配設された端面位置測定装置であ
る。Figure 3 shows an angular type numerically controlled grinding machine.
An index table 12 that rotatably supports a workpiece W by a headstock IO and a tailstock 11 is movably supported on a guide surface 14 formed on a bed 13 along the workpiece axis. Servo motor 1 fixed to 3
5, the feed is controlled via a screw feed mechanism. The grinding wheel head 17 bearing the grinding wheel G is movably supported by a guide surface 18 formed on the head I3 along a direction intersecting the workpiece axis at an acute angle θ, and is supported by a servo fixed to the head 13. The feed is controlled by the motor 19 via a screw feed mechanism. In such a screw feeding mechanism, when the servo motor 19 rotates by N pulses in terms of command pulses, the grindstone head 17 moves along the guide surface 18 by N×Δd/sinθ (where Δd is 1
Therefore, the movement command for the grinding wheel head 17 is a command for moving the grindstone head 17 by one movement amount in the workpiece diameter direction per pulse. In addition,
20 is an end face position measuring device disposed on the head 13.
前記工作物Ｗば複数の段部を有する多段工作物で、−例
とし°ζ左端部に最大径部ＷＯを有し、右端部からその
最大径部ＷＯに向かって直径が順次増大する複数の研削
加工箇所Ｗｌ、Ｗ２．Ｗ３を有するもので示しである。The workpiece W is a multi-stage workpiece having a plurality of step parts, and for example, the maximum diameter part WO is at the left end part, and the workpiece W is a multi-stage workpiece having a plurality of step parts, and has a maximum diameter part WO at the left end part, and a plurality of workpieces whose diameter increases sequentially from the right end part toward the maximum diameter part WO. Grinding parts Wl, W2. The one with W3 is shown.
また砥石車Ｇは前記各研削加工箇所Ｗｌ、Ｗ２．Ｗ３の
円筒面と端面にそれぞれ平行な２つの加工面Ｇｌ、Ｇ２
を有し、前記砥石台１７にその進退方向に対し直角な軸
線のまわりに回転可能に軸承されている。Further, the grinding wheel G is used for each of the grinding locations Wl, W2. Two machining surfaces Gl and G2 parallel to the cylindrical surface and end surface of W3, respectively.
, and is rotatably supported on the grindstone head 17 about an axis perpendicular to its advancing and retreating direction.
また、前記砥石台１７の後端部側面には軸線を砥石台１
７の移動方向に一致させたシリンダ２１が配設されてお
り、このシリンダ２１内に摺動可能に嵌装したピストン
２２にはピストンロッド２３が連結されているとともに
、ピストン２２で区画されるシリンダ室２１ａ、２１ｂ
間をピストン２２とシリンダ２１の相対的移動速度を砥
石台１７の早送り速度より充分小さな安全速度以下に制
限する絞り２５を介して接続し、かつこの絞り２５には
シリンダ２１の後退動作時に開かれるチェック弁２６を
並列に接続せしめ、さらにシリンダ室２１ａ側には砥石
台１７上に設置した補助用の油タンク２７がチェック弁
２４を介して接続されている。また、上記ピストンロッ
ド２３は上記ベッド１３の後部」二に立設した固定部材
２８に貫通され、このピストンロッド２３の貫通先端に
は固定部材２８に待ｉ合することによりピストン２２の
前進移動を規制する係合部材２９が固着され、そして砥
石台１７が加工原位置Ｐｏにあるときの係合部材２９と
固定部材２８間の距Ｎ１１は加工原位置Ｐｏとクリア位
置Ｐｉとの間の距離よりも所定量だけ長い値に設定され
ている。また、上記ピストンロッド２３には固定部材２
８の内側面に衝合することでピストン２２の後退移動を
規制する係合部材３０が固着されている。In addition, an axis line is attached to the side surface of the rear end of the whetstone head 17.
A cylinder 21 is arranged to match the movement direction of the cylinder 7, and a piston rod 23 is connected to a piston 22 slidably fitted in the cylinder 21. Chambers 21a, 21b
The piston 22 and the cylinder 21 are connected to each other through a throttle 25 that limits the relative movement speed of the cylinder 21 to a safe speed or less, which is sufficiently smaller than the rapid traverse speed of the grinding wheel head 17, and the throttle 25 is opened when the cylinder 21 moves backward. Check valves 26 are connected in parallel, and an auxiliary oil tank 27 installed on the grindstone head 17 is connected to the cylinder chamber 21a via the check valve 24. Further, the piston rod 23 is passed through a fixed member 28 erected at the rear portion of the bed 13, and the forward movement of the piston 22 is prevented by engaging the fixed member 28 at the penetrating end of the piston rod 23. The distance N11 between the engaging member 29 and the fixing member 28 when the regulating engaging member 29 is fixed and the grindstone head 17 is at the original machining position Po is greater than the distance between the original machining position Po and the clear position Pi. is also set to a value that is a predetermined length. Further, a fixing member 2 is attached to the piston rod 23.
An engaging member 30 that restricts the backward movement of the piston 22 by abutting against the inner surface of the piston 8 is fixed.
次に制御回路について説明すると、第３図においてＩ）
ＵＸ、ＤＬＪＺは前記サーボモータ１９．１５をそれぞ
れ駆動する駆動回路、３１は数値制御装置であり、この
数値制御装置３１は、演算処理装置ｃｐｕ、メモリＭＥ
Ｍ、データ書込装置ＭＤＩにて構成されている。Next, to explain the control circuit, in Fig. 3 I)
UX and DLJZ are drive circuits that respectively drive the servo motors 19 and 15, and 31 is a numerical control device, which includes an arithmetic processing unit CPU, a memory ME
M and a data writing device MDI.
前記メモリＭ Ｅ Ｍには、第５図に示されるように各
加工箇所Ｗ１〜Ｗ３のそれぞれに対応する記憶エリアＤ
ＡＩ〜ＤＡ３が形成され、これらの記憶エリアには研削
に必要な送り量及び送り速度のデータが記憶されいる外
、各加工箇所Ｗ１〜Ｗ３の加工順序のデータ１〜３、各
加工箇所Ｗ１〜−３に対応したインデックステーブルＩ
２の割出位置２１〜Ｚ３および、準急連送り量３１〜Ｓ
３が記憶されている。なおこの準急連送り量８１〜Ｓ３
は第７図に示されており、クリア位置１〕ｉから各加工
箇所Ｗｌ−Ｗ３における加工開始位置Ｐｓｌ〜Ｐｓ３ま
での直径方向の距離である。The memory MEM has storage areas D corresponding to each of the processing locations W1 to W3, as shown in FIG.
AI to DA3 are formed, and these storage areas store data on the feed amount and feed rate necessary for grinding, as well as data 1 to 3 on the machining order of each machining location W1 to W3, and data on each machining location W1 to W3. - Index table I corresponding to 3
2 index positions 21 to Z3 and semi-urgent continuous feed amount 31 to S
3 is memorized. In addition, this semi-express continuous feed amount 81 to S3
is shown in FIG. 7, and is the distance in the diametrical direction from the clear position 1]i to the processing start positions Psl to Ps3 at each processing location Wl-W3.
また、各加工箇所Ｗｌ〜Ｗ３のデータを記憶するコニリ
アとは別のエリアＤΔ０１．ＤΔ０２には全加工段数を
表すテーク３と、加工原位置ＰＯからクリア位置Ｐｉま
での早送り前進量ＸＯのデータが予め記憶されており、
さらに準急連送りの最大値Ｓｉを記１．ａするエリアＤ
ＡＯ３もメモリＭＥＭ上に形成されている。Furthermore, an area DΔ01. DΔ02 stores in advance the data of take 3 representing the total number of machining stages and the rapid forward advance amount XO from the machining original position PO to the clear position Pi.
Furthermore, the maximum value Si of semi-express continuous feed is written in 1. Area D
AO3 is also formed on the memory MEM.
次に第６図のフローチャー１−に基づいて研削加工中に
おりる演算処理装置ＣＰＵの動作について説明する。Next, the operation of the arithmetic processing unit CPU during the grinding process will be explained based on the flowchart 1- in FIG.
今、数値制御装置３１に起動信号が与えられると、演算
処理装置ＣＰＵはまず最初に記憶エリアＤＡＯ３に記憶
された準急連送りの最大値シイを零にセントするととも
に、研削順序カウンタＧＯＣを１にセットしく５０）、
この後、砥石車Ｇを加−工原位置Ｐｏからクリア位置Ｐ
ｉまで早送りするべく、Ｘ軸に１１１送り速度で正のパ
ルスを分配する（５１ｍ、これにより、砥石台１７は固
定部材２８が係合部祠２９に当接する直前の位置まで早
送り速度で移動される。Now, when a start signal is given to the numerical control device 31, the arithmetic processing unit CPU first sets the maximum value of the semi-express continuous feed stored in the storage area DAO3 to zero, and also sets the grinding order counter GOC to 1. Set 50),
After this, the grinding wheel G is moved from the machining original position Po to the clear position P.
In order to rapidly advance to i, a positive pulse is distributed to the X axis at a feed rate of 111 m (51 m).As a result, the grindstone head 17 is moved at a rapid rate to the position immediately before the fixed member 28 comes into contact with the engagement portion grinding hole 29. Ru.
この後、演算処理装置ＣＰ［Ｊは研削順序カウンタＧＯ
Ｃの計数値に対応する研削順序１が書込まれている加工
箇所を選択する（５２）。本実施例においては、第７図
において左側から順番に加工が行われるように加工順序
が設定されているので、上記の動作により、最大径を有
する加工箇所Ｗ１が選択される。そして、演算処理装置
ｃｐｕはこれに続いて選択された加工箇所Ｗ１に対応す
る記１．１エリアＤＡＩから割出位置のデータＺ１を続
出し、これに従ってＺ軸にパルス分配を行って加工箇所
Ｗ１を加工位置に割出す（５３）。After this, the arithmetic processing unit CP [J is the grinding order counter GO
The machining location where grinding order 1 corresponding to the count value of C is written is selected (52). In this embodiment, since the machining order is set such that machining is performed sequentially from the left side in FIG. 7, the machining location W1 having the maximum diameter is selected by the above operation. Then, the arithmetic processing unit cpu successively outputs the index position data Z1 from area DAI in 1.1 corresponding to the selected machining location W1, and distributes pulses on the Z axis in accordance with this data to determine the machining location W1. is indexed to the processing position (53).
このように、割出し動作が完了すると、演算処 ゛理装
置ＣＰＵは加工箇所Ｗ１の準急連送り貝Ｓ１が零にセッ
トされた準急連送りの最大値３ｉよりも大きいことを判
別しく５４） 、５ｒ＝Ｓｎ−３ｉ、！７）演算を行っ
て準急連送り量Ｓｒを演算する（５５）。なお、準急連
送り量Ｓｎは各加工箇所に対応して記憶されているプロ
グラム上での準急連送り量で、この場合はＳｌである。In this way, when the indexing operation is completed, the processing unit CPU determines that the semi-urgent continuous feed shell S1 of the processing location W1 is larger than the maximum value 3i of the semi-urgent continuous feed set to zero54). 5r=Sn-3i,! 7) Perform calculation to calculate the semi-urgent continuous feed amount Sr (55). Note that the semi-urgent continuous feed amount Sn is the semi-urgent continuous feed amount on the program stored corresponding to each processing location, and in this case is Sl.
そして、前記の準急連送りの最大値Ｓｉに応じた正のパ
ルスをＸ軸に分配して砥石台１７を早送り前進させた後
（５６）、演算された準急連送り量Ｓｒに応した数の正
パルスを早送り速度に比べて充分小さな準急連送りでＸ
軸に分配し、砥石台１７を準急連送りする（５７）。Then, after the positive pulses corresponding to the maximum value Si of the above-mentioned semi-urgent continuous feed are distributed to the X-axis to rapidly advance the grinding wheel head 17 (56), the number of pulses corresponding to the calculated semi-urgent continuous feed amount Sr is The positive pulse is sent in a semi-quick continuous feed that is sufficiently small compared to the rapid feed speed.
The grinding wheel head 17 is sent semi-quickly (57).
この場合には準急連送りの最大値Ｓｉが零であるので、
上記の処理により、砥石車Ｇはクリア位置Ｐｉから研削
送り開始位置ｐｓｌまでの間準急連送りで移動されるこ
とになる。このようにして準急連送りが行われると、そ
の途中の位置において係合部材２９が固定部材２８に当
接し、シリンダ２１内のピストン２２は相対的に後方に
移動することになる。In this case, the maximum value Si of semi-express continuous feed is zero, so
Through the above process, the grinding wheel G is moved in a semi-quick continuous manner from the clear position Pi to the grinding feed start position psl. When the semi-quick continuous feeding is performed in this way, the engaging member 29 comes into contact with the fixed member 28 at an intermediate position, and the piston 22 in the cylinder 21 moves relatively backward.
この後、演算処理装置ｃｐｕは準急連送り量Ｓ１の値を
準急連送りの最大値Ｓｔとして記憶エリアＤＡＯ３に記
憶した後、所定の研削パターンに従って砥石車Ｇを前進
させるべくＸ軸に正パルスを分配しく６０）、これによ
り、加工箇所Ｗ１が研削加工される。After that, the arithmetic processing unit CPU stores the value of the semi-urgent continuous feed amount S1 as the maximum value St of the semi-urgent continuous feed in the storage area DAO3, and then applies a positive pulse to the X axis to advance the grinding wheel G according to a predetermined grinding pattern. 60), whereby the processing location W1 is ground.
この研削加工中においても、ピストン２２が相対移動を
続け、ピストン２２は加工箇所Ｗ１の仕上げ径に応じた
位置まで相対移動される。これにより、加工箇所Ｗ１に
引続いて加工箇所Ｗｌよりも小径の加工箇所Ｗ２を加工
する場合には、砥石車Ｇを加工箇所Ｗ１に対応した研削
送り開始位置Ｐｓｌまで移動させても、保合部材２９が
固定部材２８に当接しない状態となり、この研削送り開
始位置ｐｓｌまでは砥石車Ｇを早送り速度で移動させる
ことが可能となる。Even during this grinding process, the piston 22 continues to move relative to each other, and the piston 22 is relatively moved to a position corresponding to the finished diameter of the processing location W1. As a result, when machining a machining spot W2 that has a smaller diameter than the machining spot Wl subsequent to the machining spot W1, even if the grinding wheel G is moved to the grinding feed start position Psl corresponding to the machining spot W1, the The member 29 does not come into contact with the fixed member 28, and the grinding wheel G can be moved at a rapid speed until this grinding feed start position psl.
上記のようにして加工箇所Ｗ１の研削加工を完了すると
、演算処理装置ｃｐｕは研削順序カウンタＧＯＣの計数
値ｌと加工段数３を比較することによって最終加工箇所
でないことを判別しく６１）、砥石車Ｇを早送り速度で
クリア位置Ｐｉに戻すべくＸ軸に負パルスを分配した後
（６２）、研削順序カウンタＧＯＣを歩進させ（６３）
、（５２）へ戻る。When the grinding of the machining point W1 is completed as described above, the arithmetic processing unit cpu determines that it is not the final machining point by comparing the count value l of the grinding order counter GOC with the number of machining stages 3 (61), and the grinding wheel After distributing a negative pulse to the X axis to return G to the clear position Pi at a rapid traverse speed (62), the grinding order counter GOC is incremented (63).
, return to (52).
これにより、加工順序が２となっている中央の加工箇所
Ｗ２が選ばれ（５２）、この加工箇所Ｗ２が加工位置に
割出された後（５３）、上記の場合と同様の処理が行わ
れる。As a result, the central machining location W2 whose machining order is 2 is selected (52), and after this machining location W2 is indexed to the machining position (53), the same processing as in the above case is performed. .
この場合には、準急連送りの最大値３ｉの値が、加工箇
所Ｗ１の準急連送り量Ｓ１に更新されているが、加工箇
所Ｗ２の準急連送り量Ｓ２は第７図にも示されるように
準急連送り量Ｓ１よりも人きいため、演算処理装置ｃｐ
ｕは、これを（５４）で判別し、上記の場合と同様に（
５５）以降の処理を行う。In this case, the value of the maximum value 3i of the semi-urgent continuous feed is updated to the semi-urgent continuous feed amount S1 of the machining location W1, but the semi-urgent continuous feed amount S2 of the machining location W2 is changed as shown in FIG. is more sensitive than the semi-urgent continuous feed amount S1, so the arithmetic processing unit cp
u determines this using (54), and similarly to the above case, (
55) Perform the following processing.
これにより、Ｓ２ Ｓｉ、ずなわち、Ｓ２ Ｓｌの値を
準急連送り量Ｓｒとし“ζ演算するとともに（５５）、
この後、記憶位置ＤＡＯ１に最大値Ｓｉとして記憶され
ている加工箇所Ｗ１の準急連送り量Ｓ、たり砥石車Ｇを
早送りするためのノ〈ルス分配を行い（５６）、さらに
、演算された準急連送り１ｌｓｒだけ砥石車Ｇを準急連
送りするためのパルス分配を行う（５７）。これにより
、加工箇所Ｗ１の研削送り開始位置ｐｓｌまでは砥石車
Ｇが早送りで移動され、準急連送りの距離が大幅に短縮
される。また、この後、加工箇所Ｗ２の準急連送り量Ｓ
２を準急連送りの最大値Ｓｉとして記憶エリアＤＡＯ３
に記憶する（６０）。As a result, the value of S2 Si, that is, S2 Sl is set as the semi-urgent continuous feed amount Sr, and ζ calculation is performed (55).
After that, the semi-urgent continuous feed amount S of the machining location W1 stored as the maximum value Si in the memory location DAO1, and the pulse distribution for rapidly feeding the grinding wheel G are performed (56). Pulse distribution is performed to continuously feed the grinding wheel G semi-quickly by 1 lsr (57). As a result, the grinding wheel G is moved rapidly to the grinding feed start position psl of the processing location W1, and the distance of semi-rapid continuous feeding is significantly shortened. Also, after this, the semi-urgent continuous feed amount S of the processing location W2
2 as the maximum value Si of semi-express continuous sending in the storage area DAO3.
(60).
前記したように加工箇所Ｗ１の加工中においてシリンダ
２１内のピストン２２が相対移動しているため、加工箇
所Ｗｌの研削送り開始位置ｐｓｌまで砥石車Ｇを早送り
速度で移動させても、その工程で係合部材２９が固定部
材２８に当接することはなく、サーボモータに許容以上
の負荷が加わってサーボ異常となることが防止される。As described above, since the piston 22 in the cylinder 21 is relatively moving during machining of the machining location W1, even if the grinding wheel G is moved at a rapid traverse speed to the grinding feed start position psl of the machining location W1, the The engaging member 29 does not come into contact with the fixing member 28, thereby preventing servo abnormality from being applied to the servo motor due to an excessive load.
そして、準急連送りが開始されると、その途中で係合部
材２９が固定部＋Ａ２８に再び当接し、研削送りが完了
するまでの間、ピストン２２が相対移動する。これによ
り、加工箇所Ｗ２の研削送り開始位置ＰＳ２まで砥石車
Ｇを早送りすること力く可能となる。Then, when the semi-quick continuous feed is started, the engaging member 29 comes into contact with the fixed part +A28 again in the middle, and the piston 22 moves relatively until the grinding feed is completed. This makes it possible to rapidly feed the grinding wheel G to the grinding feed start position PS2 of the processing location W2.
加工箇所Ｗ２の加工が完了すると、砥石車Ｇをクリア位
置Ｐ ｉに戻した後、研削順序カウンタＧＯＣを歩進し
て３としく６３）、（５２）へ戻る。When the machining of the machining location W2 is completed, the grinding wheel G is returned to the clear position P i, and then the grinding order counter GOC is incremented to 3 and the process returns to 63) and (52).
これにより、右端の加工箇所Ｗ３の加工のための送りが
開始されるが、この場合においては、Ｓ２−３３が準急
連送り１ｉｓｔとして演算され（５５）、クリア位置Ｐ
ｉから準急連送り量Ｓ２まで砥石車Ｇが早送りで前進さ
れた後、この演算された準急連送り量Ｓｒだけ砥石車Ｇ
が４！＝急速送りされる。したがって、この加工箇所Ｗ
３の加工時においても準急連送り量を減少できる。As a result, the feed for machining the rightmost machining location W3 is started, but in this case, S2-33 is calculated as semi-urgent continuous feed 1ist (55), and the clear position P
After the grinding wheel G is advanced in rapid traverse from i to the semi-urgent continuous feed amount S2, the grinding wheel G is moved forward by the calculated semi-urgent continuous feed amount Sr.
4! = Rapid feed. Therefore, this processing location W
The amount of semi-urgent continuous feed can be reduced even during machining in step 3.
そして、これに続いて研削送りを行って加工箇所Ｗ３の
加工を完了し、この後、加工箇所Ｗ３が最終加工箇所で
あることを判別すると（６１）、砥石車Ｇを加工原位置
Ｐｏへ復帰させて加工サイクルを完了する。Subsequently, grinding feed is performed to complete the machining of the machining location W3, and after this, when it is determined that the machining location W3 is the final machining location (61), the grinding wheel G is returned to the machining original position Po. to complete the machining cycle.
なお、加工箇所Ｗ１〜Ｗ３をＷｌ、Ｗ３．Ｗ２の順で加
工を行う場合においては、加工箇所Ｗ２の加工時に砥石
車Ｇがクリア位置Ｐｉから研削にり開始位置Ｐｓ２まで
全て早送りで移動される。Note that the processing locations W1 to W3 are designated as Wl, W3. When machining is performed in the order of W2, the grinding wheel G is moved in rapid traverse from the clear position Pi to the grinding start position Ps2 when machining the machining location W2.
すなわち、加工箇所Ｗ３を加工する場合に準急連送り量
Ｓ３がｆｆ１（Ｉ！急速連送の最大値Ｓｔとして記憶さ
れるため、加工箇所Ｗ２を加工する場合には、準急連送
り量Ｓ２が準急連送りの最大値Ｓｉよりも小さくなり、
これにより演算処理装置ＣＰＵは（５８）へ移行し、砥
石車Ｇをプログラムされた急速送り量Ｓ２に対応した量
だけ早送り速度で移動させるためのパルス分配を行う。That is, when machining the machining point W3, the semi-urgent continuous feed amount S3 is stored as ff1 (I! Maximum value St of rapid continuous feed, so when machining the machining point W2, the semi-urgent continuous feed amount S2 is It becomes smaller than the maximum continuous feed value Si,
As a result, the arithmetic processing unit CPU moves to (58) and distributes pulses to move the grinding wheel G at a rapid feed speed by an amount corresponding to the programmed rapid feed amount S2.
この結果、クリア位置Ｐｉから研削送り開始位置ｐｓ２
まで砥石車Ｇが早送り速度で移動される。As a result, from the clear position Pi to the grinding feed start position ps2
The grinding wheel G is moved at a rapid traverse speed until .
このように、新たに加工する加工箇所の急速送り量Ｓｎ
が、記１．ａエリアＤＡＯ３に記憶された最大値Ｓｉよ
りも小さい場合には、準急連送りの前進端位置まで砥石
車Ｇを移動させても、保合部材２９が固定部材２８に当
接することがないため、プログラム上の準急連送り工程
の全てを早送り工程とすることができる。In this way, the rapid feed amount Sn of the newly machined part
However, note 1. If it is smaller than the maximum value Si stored in the a area DAO3, even if the grinding wheel G is moved to the forward end position of the semi-urgent continuous feed, the retaining member 29 will not come into contact with the fixed member 28. All of the semi-quick continuous feed steps on the program can be made into fast feed steps.
上記のように、加工が完了した加工箇所の準急連送り量
の大きなものを準急連送りの最大値Ｓｔとして記憶し、
プログラムで指定された準急連送り量が準急連送りの最
大値Ｓｔよりも大きな場合には準急連送りの最大値Ｓｉ
に応した距ａ１ｔを早送り速度で移動させることができ
、また、プログラムで措定された準急連送り氾が準急連
送りの最大値Ｓｉよりも小さな場合には、研削送り開始
位置まで砥石車Ｇを早送り速度で移動させることができ
るため、研削に関与しない無駄時間を大幅に短縮して加
工のサイクルタイムを短縮できる。As mentioned above, the large amount of semi-urgent continuous feed at the machining location where processing has been completed is stored as the maximum value St of the semi-urgent continuous feed,
If the semi-urgent continuous feed amount specified in the program is larger than the maximum value St of semi-urgent continuous feed, the maximum value of semi-urgent continuous feed Si
The grinding wheel G can be moved at a rapid traverse speed by a distance a1t corresponding to Since it can be moved at a rapid traverse speed, wasted time that is not involved in grinding can be significantly reduced, reducing machining cycle time.
なお、上記実施例は、シリンダ装置を用いた保安機構を
備えた数値制御研削盤に本発明を通用したものであるが
、本発明はかかる保安機構を在しない数値制御研削盤に
も適用できるもの−Ｃある。Note that although the above embodiments are applicable to a numerically controlled grinding machine equipped with a safety mechanism using a cylinder device, the present invention can also be applied to a numerically controlled grinding machine that does not have such a safety mechanism. -There is C.
すなわち、本発明においては、加工済加工箇所の準急連
送り量に基づいて次の加二り箇所における早送り前進端
の位置を自動決定ｊ゛るようにしているので、各加工箇
所において早送りの後、準急連送りを行うようにした場
合には、かかる早送りから準急連送りへの切換点の位置
を自動決定でき、かかる切換点のデータは最初の加工箇
所を除いて特別に入力する必要がなくなる効果がある。That is, in the present invention, the position of the forward end of rapid traverse at the next addition point is automatically determined based on the semi-rapid continuous feed amount of the already machined section, so that , When semi-urgent continuous feeding is performed, the position of the switching point from rapid traverse to semi-urgent continuous feeding can be automatically determined, and there is no need to specially input the data of this switching point except for the first machining location. effective.
また、上記実施例においては、加工済加工箇所前送り前
進端の位置を更新記憶し、この記憶された研削送り前進
端まで砥石車を早送り速度で前進させるようにしてもよ
い。Further, in the above embodiment, the position of the forward feed end of the machined part may be updated and stored, and the grinding wheel may be advanced at a rapid forward speed to the stored grinding feed forward end.
〈発明の効果〉
以上述べたように本発明においては、各加工箇所におい
て、加工済の加工箇所に対応する研削送り開始位置もし
くは研削送り前進端までは砥石車を早送り速度で移動さ
せるようにしたので、研削加工に関与しない無駄時間を
削減でき、加工のサイクルタイムを大幅に短縮できる利
点がある。<Effects of the Invention> As described above, in the present invention, at each processing location, the grinding wheel is moved at a rapid traverse speed until it reaches the grinding feed start position or the grinding feed forward end corresponding to the processed processing location. Therefore, it is possible to reduce wasted time that is not involved in the grinding process, and has the advantage of significantly shortening the machining cycle time.
また、加工済加工箇所の移動データに基づいて早送り量
を算出するようにしているので、かかる早送り量を特別
にプログラムする必要がなくなり、データ人力が容易に
なる利点もある。Furthermore, since the rapid feed amount is calculated based on the movement data of the processed location, there is no need to specially program the rapid feed amount, which has the advantage of facilitating data manual labor.
第１図は従来の送りサイクルを示す図、第２図は本発明
を明示するための全体構成図、 第３図〜第７図は本発
明の実施例を示すもので第３図は研削盤の概略平面図に
制御回路を示すブロック図を併記した図、第４図は保安
装置の構成を示す拡大断面図、第５図は第３図における
メモリＭＥＭの記憶内容を示す図、第６図は第３図にお
り演算処理装置ＣＰ、Ｕの動作を示すフローチャート、
第７図は本発明にかかる送りザイクルを示す図である。
１２・・・インデックステーブル、１７・・・砥石台、
１９・・・サーボモータ、２１・・・シリンダ、２２・
・・ピストン、２３・・・ピストンロンド、２８・・・
固定部材、２９・・・係合部材、３１・・・数値制御装
置、ｃｐｕ・・・演算処理装置、Ｇ・・・砥石車、ＭＥ
Ｍ・・・メモリ、８１〜Ｓ３・・・・準急連送り量、ｗ
ｉ−ｗ３・・・加工箇所。
特許出願人
豊田工機株式会社Fig. 1 is a diagram showing a conventional feed cycle, Fig. 2 is an overall configuration diagram to clarify the present invention, Figs. 3 to 7 show embodiments of the present invention, and Fig. 3 is a grinding machine. FIG. 4 is an enlarged sectional view showing the configuration of the security device; FIG. 5 is a diagram showing the contents of the memory MEM in FIG. 3; FIG. 3 is a flowchart showing the operation of the arithmetic processing units CP and U,
FIG. 7 is a diagram showing a feed cycle according to the present invention. 12... Index table, 17... Grindstone stand,
19... Servo motor, 21... Cylinder, 22...
...Piston, 23...Piston Rondo, 28...
Fixed member, 29... Engaging member, 31... Numerical control device, CPU... Arithmetic processing unit, G... Grinding wheel, ME
M...Memory, 81-S3...Semi-urgent continuous feed amount, w
i-w3...Processing location. Patent applicant Toyota Machinery Co., Ltd.
Claims (1)
して研削加工を行うようにした多段工作物加工用数値制
御研削盤において、砥石車を研削送り開始位置まで移動
させた後研削送りを行う移動データを前記複数の加工箇
所のそれぞれに対応して記憶する記憶手段と、加工位置
に割出した加工箇所に対応する前記移動データと加工済
加工箇所の内、最も小径の加工箇所に対応した前記移動
データを前記記憶手段から読出ず読出手段と、この読出
手段によって読出された両移動データに基づいて加工済
加工箇所の径に応じた準急連送り完了点を表すデータを
演算する演算手段と、前記続出手段によって読出された
加工済加工箇所の移動データに基づいて前記砥石車を早
送り速度で前進させた後、前記演算手段によって演算さ
れた準急°連送り完了点まで、前記早送り速度よりも遅
い準急連送りで砥石車を前進させ、この後砥石車の研削
送りを行う送り制御手段とを設けたことを特徴とする多
段工作物加工用数値制御研削盤。(1) In a numerically controlled grinding machine for multi-stage workpiece processing that performs grinding by sequentially indexing multiple processing points with different diameters to processing positions, the grinding wheel is moved to the grinding feed start position and then the grinding feed is performed. storage means for storing movement data corresponding to each of the plurality of machining locations; and a storage means for storing movement data corresponding to each of the plurality of machining locations; A reading means for reading out the corresponding movement data from the storage means, and an operation for calculating data representing a semi-urgent continuous feed completion point according to the diameter of the machined part based on both movement data read by the reading means. and the grinding wheel is advanced at a rapid traverse speed based on the movement data of the machined part read by the continuous processing means, and then the rapid traverse speed is increased until the semi-rapid continuous feeding completion point calculated by the calculation means is reached. 1. A numerically controlled grinding machine for machining a multi-stage workpiece, characterized in that the grinding wheel is advanced by a semi-quick continuous feed slower than the grinding wheel, and is further provided with a feed control means for feeding the grinding wheel for grinding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1793484A JPS60161069A (en) | 1984-02-01 | 1984-02-01 | Numerically controlled grinding machine for working multi-step work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1793484A JPS60161069A (en) | 1984-02-01 | 1984-02-01 | Numerically controlled grinding machine for working multi-step work |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60161069A true JPS60161069A (en) | 1985-08-22 |
| JPH0513785B2 JPH0513785B2 (en) | 1993-02-23 |
Family
ID=11957599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1793484A Granted JPS60161069A (en) | 1984-02-01 | 1984-02-01 | Numerically controlled grinding machine for working multi-step work |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60161069A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0261561U (en) * | 1988-10-20 | 1990-05-08 | ||
| JP2006167872A (en) * | 2004-12-16 | 2006-06-29 | Jtekt Corp | Grinding method and grinder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5524289A (en) * | 1978-07-28 | 1980-02-21 | Lucas Industries Ltd | Friction pad assembly |
| JPS56126575A (en) * | 1980-02-28 | 1981-10-03 | Okuma Mach Works Ltd | Machining method in numerical control (nc) machine tool |
-
1984
- 1984-02-01 JP JP1793484A patent/JPS60161069A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5524289A (en) * | 1978-07-28 | 1980-02-21 | Lucas Industries Ltd | Friction pad assembly |
| JPS56126575A (en) * | 1980-02-28 | 1981-10-03 | Okuma Mach Works Ltd | Machining method in numerical control (nc) machine tool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0261561U (en) * | 1988-10-20 | 1990-05-08 | ||
| JP2006167872A (en) * | 2004-12-16 | 2006-06-29 | Jtekt Corp | Grinding method and grinder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0513785B2 (en) | 1993-02-23 |
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