JPS6279948A - Working feed device of machine tool - Google Patents
Working feed device of machine toolInfo
- Publication number
- JPS6279948A JPS6279948A JP60219127A JP21912785A JPS6279948A JP S6279948 A JPS6279948 A JP S6279948A JP 60219127 A JP60219127 A JP 60219127A JP 21912785 A JP21912785 A JP 21912785A JP S6279948 A JPS6279948 A JP S6279948A
- Authority
- JP
- Japan
- Prior art keywords
- machining
- feed
- time difference
- working
- time
- 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.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Automatic Control Of Machine Tools (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、旋盤、フライス盤及びボール盤等の各種工作
機械に於ける加工送り装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a processing feed device for various machine tools such as lathes, milling machines, and drilling machines.
各種工作機械に於ける加工送りは、その送り寸法、速度
等については数値制御装置に予めプログラム設定された
ところに従い、又被加工体の材質及び加工形状等を考慮
して行なう必要がある。即ち、一つの加工を行なう場合
に、切込みが浅く加工負荷の小さい箇所は、比較的早い
速度で加工送りを行ない、また反対に切込みが深く加工
負荷の大きい箇所は、ゆっくりと加工送りを行なうこと
が望ましい。Machining feed in various machine tools must be performed in accordance with the feed dimensions, speed, etc. programmed in advance in a numerical control device, and in consideration of the material, machining shape, etc. of the workpiece. In other words, when performing one machining, the machining feed should be performed at a relatively fast speed in areas where the depth of cut is shallow and the machining load is small, and conversely, in areas where the depth of cut is deep and the machining load is large, the machining feed should be performed slowly. is desirable.
然しなから、従来の各種工作機械の加工送り装置は、加
工各部毎に加工送り速度が予めプログラム設定されてい
るもの＼、比較的ラフなもので、例えば時々刻刻その加
工負荷の大小に応じた適切な加工送り制御をすることが
できなかったため、加工時の加工送り速度は常に成る程
度以上の安全サイドに設定して加工を行なっていた。従
って、加工能率が悪く、加工所要時間が長くなると云う
問題点があった。However, conventional machining feed devices for various machine tools have a preprogrammed machining feed rate for each part of the machining process, and are relatively rough; Since it was not possible to control the machining feed appropriately, the machining feed rate during machining was always set on the safe side. Therefore, there have been problems in that machining efficiency is poor and the time required for machining is long.
本発明は叙上の観点に立ってなされたものであって、そ
の目的とするところは、加工負荷の大小に応じて常時適
切な速度で加工送りを行ない、加工能率を改善し、加工
所要時間を大幅に短縮することにある。The present invention has been made based on the above-mentioned viewpoints, and its purpose is to constantly feed machining at an appropriate speed depending on the magnitude of the machining load, improve machining efficiency, and reduce the time required for machining. The aim is to significantly shorten the
而して、上記の目的は、工作機械の工具若しくは被加工
物を加工送りする装置に於て、上記加工送りを指令する
数値制御装置の指令パルスと９、各指令パルスに応動し
て加工送りされる物体の実際の移動との時間遅れを計測
する時間差検出用カウンタと、上記時間差検出用カウン
タの計測値を一定の許容範囲内に保持するよう加工送り
指令パルスの周波数を制御する装置とを設けた工作機械
の加工送り装置によって達成される。The above purpose is to provide a system for processing and feeding a tool of a machine tool or a workpiece, and to control the processing feed in response to the command pulses of the numerical control device that commands the processing feed and each command pulse. a time difference detection counter that measures the time delay with the actual movement of the object being moved; and a device that controls the frequency of the machining feed command pulse so as to maintain the measured value of the time difference detection counter within a certain tolerance range. This is achieved by the processing feed device of the machine tool provided.
而して、上記の如く構成すれば、加工時には加工負荷の
大小に応じて常時適切な速度で加工送り運動を付与しつ
つ加工を進行させることができるので、加工能率が改善
され加工所要時間を大幅に短縮することができる。With the above configuration, machining can proceed while applying machining feed motion at an appropriate speed depending on the magnitude of machining load, improving machining efficiency and reducing machining time. It can be significantly shortened.
以下、図面を参照しつ＼本発明の詳細を具体的に説明す
る。Hereinafter, details of the present invention will be specifically explained with reference to the drawings.
第１図は、本発明にかかる工作機械の加工送り装置の一
実施例を示す説明図、第２図は、出力回路から発せられ
た指令パルスと、エンコーダによって検出された実際の
移動検出パルスとの時間差を示すグラフ、第３図は、一
つの被加工体を加工した際の加工負荷と加工送りの関係
を示すグラフである。FIG. 1 is an explanatory diagram showing an embodiment of a machining feed device for a machine tool according to the present invention, and FIG. 2 shows a command pulse emitted from an output circuit and an actual movement detection pulse detected by an encoder. FIG. 3 is a graph showing the relationship between processing load and processing feed when processing one workpiece.
而して、第１図乃至第３図中、１は工作機械の加工送り
装置であり、２はベッド、３は紙面に垂直な方向、即ち
、Ｙ軸方向にモータ４により加工送りされる刃物送り台
、５は刃物台、６は上記刃物台５にボルト７．７によっ
て取付けられたバイト、８は上記刃物台４を送りねじ９
を介して図中Ｘ軸方向に移動するモータ、８ａは上記モ
ータ８のシャフト、１０カツプリング、１１は上記刃物
送り台３に取付けられた読取ヘッド、１２はベッド２に
取付けられたマグネチックスケールであり、上記読取へ
ラド１１とマグネチックスケール１２とにより刃物送り
台３の実際の移動を検知するエンコーダを形成している
。１３は時間差検出用カウンタ、１４はパルスシネレー
タ、１５はＮＣ（数値制御装置）、１６は出力回路、１
７は被加工体であり、第２図中、１８は上記出力回路１
６から発せられた指令パルス、１９は読取ヘッド１１に
よって検出された刃物送り台３の実際の移動を示すパル
スである。1 to 3, 1 is a processing feed device of the machine tool, 2 is a bed, and 3 is a cutter that is processed and fed by a motor 4 in a direction perpendicular to the plane of the paper, that is, in the Y-axis direction. 5 is a tool post; 6 is a cutting tool attached to the tool post 5 with a bolt 7; 8 is a feed screw 9 that connects the tool post 4 to the feed post;
8a is the shaft of the motor 8, 10 is a coupling, 11 is a reading head attached to the blade feeder 3, and 12 is a magnetic scale attached to the bed 2. The reading pad 11 and the magnetic scale 12 form an encoder that detects the actual movement of the blade feed base 3. 13 is a time difference detection counter, 14 is a pulse cinerator, 15 is an NC (numerical controller), 16 is an output circuit, 1
7 is a workpiece, and in FIG. 2, 18 is the output circuit 1.
A command pulse 6 is emitted, and 19 is a pulse indicating the actual movement of the blade carriage 3 detected by the reading head 11.
而して、工作機械の加工送り装置１は、ベッド２上に移
動自在に刃物送り台３が搭載されており、上記刃物送り
台３はモータ４によって図中Ｙ軸方向に移動される。刃
物送り台３上にはモータ８と、図中Ｘ軸方向に移動自在
な刃物台５が搭載されており、上記刃物台５はモータ８
のシャフト８ａにカンブリング１０を介して接続された
送りねじ９の回動に伴って図中Ｘ軸方向に移動する。The machining/feeding device 1 of a machine tool has a cutter feeder 3 movably mounted on a bed 2, and the cutter feeder 3 is moved by a motor 4 in the Y-axis direction in the figure. A motor 8 and a tool rest 5 that is movable in the X-axis direction in the figure are mounted on the tool feeder 3, and the tool rest 5 is connected to the motor 8.
It moves in the X-axis direction in the figure as the feed screw 9, which is connected to the shaft 8a through the cambling 10, rotates.
また、上記刃物送り３には読取ヘッド１１が取付けられ
、一方ベッド２には上記読取ヘッド１１と相対向するよ
うにマグネチックスケール１２が取付けられており、上
記読取ヘッド１１とマグネチックスケール１２とにより
上記刃物送り台３の実際の移動を検出するエンコーダを
形成している。尚、モータ８によるＸ軸方向の送りを検
出するエンコーダは図面では省略しである。Further, a reading head 11 is attached to the blade feeder 3, and a magnetic scale 12 is attached to the bed 2 so as to face the reading head 11. This forms an encoder that detects the actual movement of the blade feeder 3. Note that an encoder for detecting the feed in the X-axis direction by the motor 8 is omitted in the drawing.
刃物台５にはバイト６がボルト７．７によって取付けら
れており、上記バイト６は被加工体１７の材質及び加工
形状等に応じて、最適なバイトが選択選定され、上記刃
物台５に取付けられて加工が行なわれる。A cutting tool 6 is attached to the tool rest 5 by bolts 7.7, and the optimum cutting tool 6 is selected according to the material and processing shape of the workpiece 17, and is attached to the tool rest 5. processing is carried out.
被加工体１７は図示されていないチャック等の固定装置
に取り付けられ、加工時には上記被加工体１７に所定の
回転運動が付与されて加工が行なわれる。The workpiece 17 is attached to a fixing device such as a chuck (not shown), and during machining, a predetermined rotational movement is applied to the workpiece 17 to perform the machining.
モータ４及び８にはＮ Ｃ１５から予め定められたプロ
グラムに基づいた駆動信号が出力回路１６を介して入力
される。而して、上記出力回路１６からの駆動信号がモ
ータ４及び８に入力されると、これに伴い刃物送り台３
及び刃物台４が図中Ｙ軸方向及びＸ軸方向に移動する。Drive signals based on a predetermined program are inputted to the motors 4 and 8 from the NC 15 via the output circuit 16. When the drive signal from the output circuit 16 is input to the motors 4 and 8, the blade feeder 3
And the tool rest 4 moves in the Y-axis direction and the X-axis direction in the figure.
刃物送り台３は図中Ｙ軸方向に移動すると、その移動は
上記刃物送り台３に取付けられた読取へラド１１とベッ
ド２に取付けられたマグネチックスケール１２とによっ
て形成されるエンコーダによって検出され、その検出パ
ルスは時間差検出用カウンタ１３に入力される。When the cutter feeder 3 moves in the Y-axis direction in the figure, the movement is detected by an encoder formed by a reading radar 11 attached to the cutter feeder 3 and a magnetic scale 12 attached to the bed 2. , the detection pulse is input to the time difference detection counter 13.
而して、上記時間差検出用カウンタ１３には出力回路１
６からモータ４及び８に駆動信号が発せられる都度上記
駆動信号が入力され、時間差検出用カウンタ１３は読取
ヘッド１１によって検出された刃物送り台３の実際の移
動に伴い発せられる移動検出パルスが入力される毎に両
パルスの時間差を計測する。Therefore, the time difference detection counter 13 has an output circuit 1.
6 to the motors 4 and 8, and the time difference detection counter 13 receives the movement detection pulse that is emitted when the blade feed base 3 actually moves as detected by the reading head 11. The time difference between both pulses is measured each time the pulse is pulsed.
而して、加工負荷が極めて小さい場合には、出力回路１
６からモータ４Φ駆動信号が発せられてから、モータ４
が刃物送り台３を実際に移動するまでの時間差は殆ど現
れず、加工にも全く影響をおよぼさないが、加工負荷が
大きくなればなるほど両者間に大幅な時間差が現れるこ
とになる。従って、駆動信号が発せられてから実際に加
工送りがなされ迄の時間差を考慮に入れずに加工送りを
行なうと、円滑な加工を行なうことができなくなり、ま
た、この場合には加工送り速度は加工負荷が最大である
ときの安全加工送り速度となるから、加工所要時間が大
幅に長くなる。Therefore, when the processing load is extremely small, the output circuit 1
After the motor 4Φ drive signal is issued from 6, motor 4
There is almost no difference in time until the actual movement of the blade feed table 3, and it has no effect on machining at all, but as the machining load increases, a significant time difference will appear between the two. Therefore, if machining feed is performed without taking into account the time difference between when the drive signal is issued and when machining feed is actually performed, smooth machining will not be possible, and in this case, the machining feed rate will be Since the safe machining feed rate is reached when the load is maximum, the time required for machining becomes significantly longer.
而して、本発明に於ては第３図に示す如く、加工負荷の
小さい箇所、即ち、図中Ａ、Ｃの箇所では加工速度を速
め、反対に加工負荷の大きい箇所、即ち、図中Ｂ、Ｄの
箇所では加工速度を低下させゆっくりと加工送りを行な
い、駆動信号が発せられてから実際に加工送りがなされ
る迄の時間差を考慮して適切に加工送り速度を制御しつ
つ加工を行なうものである。Accordingly, in the present invention, as shown in Fig. 3, the machining speed is increased at locations where the machining load is small, that is, locations A and C in the figure, and conversely, the machining speed is increased at locations where the machining load is large, that is, locations A and C in the figure. At points B and D, the machining speed is lowered and the machining feed is performed slowly, and the machining feed rate is controlled appropriately while taking into account the time difference between when the drive signal is issued and when the machining feed is actually performed. It is something.
即ち、本発明に於ては、出力回路１６からモータ４に駆
動信号が発せられる都度、上記駆動信号が時間差検出用
カウンタ１３に入力せしめられると共に、読取ヘッド１
１からの検出パルスが入力される。That is, in the present invention, each time a drive signal is issued from the output circuit 16 to the motor 4, the drive signal is input to the time difference detection counter 13, and the read head 1
Detection pulses from 1 are input.
即ち、上記時間差検出用カウンタ１３に於て、駆動信号
が発せられてから上記駆動信号に応動して移動する刃物
送り台３が実際に移動するまでの時間差が検出される。That is, the time difference detection counter 13 detects the time difference between when the drive signal is issued and when the knife feed stand 3, which moves in response to the drive signal, actually moves.
時間差検出用カウンタ１３によって検出された時間差信
号はパルスジェネレータ１４に入力せしめられ、上記パ
ルスジェネレータ１４はその出力周波数を時間差信号に
対応して変更、制御し、ＮＣ回路１５の作動速度を制御
するので、加工負荷の大小に追随して、常時適切な速度
で加工送りを行なうことができるのである。The time difference signal detected by the time difference detection counter 13 is input to the pulse generator 14, and the pulse generator 14 changes and controls its output frequency in accordance with the time difference signal, thereby controlling the operating speed of the NC circuit 15. Therefore, machining feed can be carried out at an appropriate speed at all times, following the magnitude of the machining load.
本発明は叙上の如く構成されるので、本発明によるとき
には、加工時に加工負荷の大小に応じて常時適切な速度
で加工送りを行ない加工を進行させることができるので
、加工能率が改善され、加工所要時間を大幅に短縮する
ことができるのである。Since the present invention is configured as described above, according to the present invention, machining can be progressed by always performing machining feed at an appropriate speed depending on the magnitude of the machining load during machining, so machining efficiency is improved. The processing time can be significantly reduced.
なお、本発明は叙上の実施例に限定されるものではない
。即ち、例えば、実際の加工送りをエンコーダによって
検出するように構成したが、エンコーダに限定されず他
の公知検出装置を利用し得るものである。また、時間差
検出回路も駆動信号と上記駆動信号に基づいた実際の加
工送りとの偏差を検出し得る回路であれは広く公知の回
路が利用できるものである。その他、読取ヘッド及びマ
グネチックスケールの取付は位置及び取付は方法等は、
本発明の目的の範囲内で自由に設計変更できるものであ
って、本発明はそれらの総てを包摂するものである。Note that the present invention is not limited to the embodiments described above. That is, for example, although the actual machining feed is detected by an encoder, it is not limited to the encoder, and other known detection devices may be used. Further, as the time difference detection circuit, a widely known circuit can be used as long as it can detect the deviation between the drive signal and the actual machining feed based on the drive signal. In addition, the mounting position and mounting method of the reading head and magnetic scale, etc.
The design can be freely changed within the scope of the purpose of the present invention, and the present invention encompasses all of them.
第１図は、本発明にかかる工作機械の加工送り装置の一
実施例を示す説明図、第２図は、出力回路から発せられ
た指令パルスと、エンコーダによって検出された実際の
移動検出パルスとの時間差を示すグラフ、第３図は、一
つの被加工体を加工した際の加工負荷と加工送りの関係
を示すグラフである。FIG. 1 is an explanatory diagram showing an embodiment of a machining feed device for a machine tool according to the present invention, and FIG. 2 shows a command pulse emitted from an output circuit and an actual movement detection pulse detected by an encoder. FIG. 3 is a graph showing the relationship between processing load and processing feed when processing one workpiece.
Claims (1)
於て、 上記加工送りを指令する数値制御装置の指令パルスと、
各指令パルスに応動して加工送りされる物体の実際の移
動との時間遅れを計測する時間差検出用カウンタと、上
記時間差検出用カウンタの計測値を一定の許容範囲内に
保持するよう加工送り指令パルスの周波数を制御する装
置とを設けたことを特徴とする上記の工作機械の加工送
り装置。[Claims] In a device for machining and feeding a tool of a machine tool or a workpiece, a command pulse of a numerical control device that commands the machining feed;
A time difference detection counter that measures the time delay between the actual movement of the object being processed and fed in response to each command pulse, and a processing feed command that maintains the measured value of the time difference detection counter within a certain tolerance range. The processing feed device for a machine tool as described above, further comprising a device for controlling the frequency of pulses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60219127A JPS6279948A (en) | 1985-10-03 | 1985-10-03 | Working feed device of machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60219127A JPS6279948A (en) | 1985-10-03 | 1985-10-03 | Working feed device of machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6279948A true JPS6279948A (en) | 1987-04-13 |
Family
ID=16730660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60219127A Pending JPS6279948A (en) | 1985-10-03 | 1985-10-03 | Working feed device of machine tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6279948A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0768146A2 (en) * | 1995-10-13 | 1997-04-16 | Kitamura Machinery Co., Ltd. | Table apparatus for machine tool |
-
1985
- 1985-10-03 JP JP60219127A patent/JPS6279948A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0768146A2 (en) * | 1995-10-13 | 1997-04-16 | Kitamura Machinery Co., Ltd. | Table apparatus for machine tool |
| EP0768146A3 (en) * | 1995-10-13 | 1997-04-23 | Kitamura Machinery Co., Ltd. | Table apparatus for machine tool |
| US5810342A (en) * | 1995-10-13 | 1998-09-22 | Kitamura Machinery Co., Ltd. | Table apparatus with a feedback scale for a machine tool |
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