JPS637255A - Position detecting device for workpiece - Google Patents
Position detecting device for workpieceInfo
- Publication number
- JPS637255A JPS637255A JP14682086A JP14682086A JPS637255A JP S637255 A JPS637255 A JP S637255A JP 14682086 A JP14682086 A JP 14682086A JP 14682086 A JP14682086 A JP 14682086A JP S637255 A JPS637255 A JP S637255A
- Authority
- JP
- Japan
- Prior art keywords
- workpiece
- machining
- inclination
- optical signal
- positioning
- 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
- 238000003754 machining Methods 0.000 claims abstract description 20
- 230000003287 optical effect Effects 0.000 claims abstract description 17
- 238000001514 detection method Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000009760 electrical discharge machining Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Automatic Control Of Machine Tools (AREA)
- Machine Tool Sensing Apparatuses (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、テーブル上に被加工物を$1置し加工を行
う加工装置における被加工物の位置検出装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a workpiece position detection device in a processing apparatus that places a workpiece on a table and performs processing.
第3図は被加工物(以下ワークという)をテーブル上に
載置し、このテーブルをNC装置の制御によりX、Y、
Z軸方向に移動させ、固定位置にある工具によってワー
クを加工する通学の加工装置の一例を示す構成図である
。In Figure 3, a workpiece (hereinafter referred to as a work) is placed on a table, and this table is controlled by an NC device to
FIG. 2 is a configuration diagram showing an example of a commuting processing device that processes a workpiece using a tool that is moved in the Z-axis direction and is located at a fixed position.
図において、(1)はワーク、(2)はワーク(1)を
載置しているテーブル、(3)は例えば放電加工装置に
おける電極のような加工手段、(4)はテーブル(2)
をX軸方向に移動させるためのX軸モータ、(5] 、
(61は同じくY軸モータおよびZ軸モータ、(7)
はこれらのモータ(41、(51、(61、および加工
手段(3)の駆動を制御するNC装置である。In the figure, (1) is a workpiece, (2) is a table on which the workpiece (1) is placed, (3) is a machining means such as an electrode in an electrical discharge machining device, and (4) is a table (2).
an X-axis motor for moving the in the X-axis direction, (5),
(61 is the same Y-axis motor and Z-axis motor, (7)
is an NC device that controls the driving of these motors (41, (51, (61), and processing means (3)).
上記のような構成の加工装置において、先ずワーク(1
)をテーブル(2)上にg苔して例えばテーブル(2)
上に定められたX、Y、Zの基準面に従って、ダイヤル
インジケータ等によりワーク(1)の水平面、垂直面を
上記X、Y、Z基準面に対応させながら位置決めを行う
。次いてスイッチ(S)を閉じ、この位置決めされたワ
ーク(1)に対して加工手段(3)、例又は放電加工装
置であれば?j5 f%を図の矢印方向に移動し、ワー
ク(1)と電極とが接触した位置でこれらの間の電流の
流れを検知したら、ワーク(1)を停止させてこの座標
位置を初期加工開始装置とする。In the processing device configured as above, first the workpiece (1
) on the table (2), for example, put moss on the table (2)
In accordance with the X, Y, and Z reference planes defined above, positioning is performed using a dial indicator or the like while making the horizontal and vertical planes of the workpiece (1) correspond to the X, Y, and Z reference planes. Next, the switch (S) is closed and the positioned workpiece (1) is processed by the machining means (3), for example, or if it is an electric discharge machining device? Move j5 f% in the direction of the arrow in the figure, and when the flow of current between the workpiece (1) and the electrode is detected at the point where they are in contact, stop the workpiece (1) and start initial machining at this coordinate position. It shall be a device.
上記のような従来の加工装置におけるワーク(1)の位
置検出ては、加工に際して段取作業から加工開始までに
要する時間は、作業者の熟掠度や定められた位置決め精
度等によって異なるが、数十分以上も段取作業を費やす
ような場合もあって、作業効率を極めて悪くしてしまう
問題があった。When detecting the position of the workpiece (1) in the conventional processing equipment as described above, the time required from the setup work to the start of processing varies depending on the skill level of the operator, the defined positioning accuracy, etc. There are cases where the setup work takes more than several tens of minutes, resulting in a problem of extremely poor work efficiency.
この発明はかかる問題点を解消するためになされたもの
で、加工の際に被加工物と加工手段とを繰返し接触させ
て被加工物の位置決めを行うことな(、段取時間を大幅
に短縮できるとともに、高精度の加工ができるワークの
位買検出装=を得る乙とを目的とする。This invention was made to solve this problem, and it eliminates the need to position the workpiece by repeatedly bringing the workpiece into contact with the processing means during machining (drastically shortening the setup time). The purpose is to obtain a workpiece detection system that can be processed with high accuracy.
〔問題点を月7決するための手段〕
この発明に係る加工装置におけるワークの位圓検出装置
は、テーブル面上で互いに直交する一対の光信ぢ発振型
とこれらに相対向するセンサとを設け、任意にテーブル
上にi!買したワークの形状によって生じる光信号によ
る明暗を上記センサが検出し、この検出した明暗領域に
基づいて、あらかじめ制御装置(こ格納された関数関係
によって演算を行い、任意に裁置したワークとテーブル
の座標系との傾きを?Inするとともに、CRT画面に
描画された上記ワークの図形に基づいて加工開始点の位
置決めを行うようにしたものである。[Means for resolving problems on a monthly basis] A workpiece position detection device in a processing apparatus according to the present invention includes a pair of optical signal oscillation types orthogonal to each other on a table surface and a sensor facing them, Randomly place i! on the table! The above-mentioned sensor detects the brightness and darkness caused by the optical signal caused by the shape of the purchased workpiece, and based on the detected brightness and darkness area, the control device (computes in advance based on the stored functional relationship) and sets the workpiece and table that are arbitrarily placed. In addition to determining the inclination with respect to the coordinate system, the machining start point is positioned based on the shape of the workpiece drawn on the CRT screen.
この発明においては、直交する光イ=号よりの光信号に
よって、任意に載置したワークの撮影をセンサが検出し
、この撮影された寸法とワーク各辺の寸法とワークの傾
きとの三角関数による相関関係をあらかじめ定め、この
相関関係に基づいて上記のセンサによって検出した撮影
値より傾きを求めて補正するとともに、CRT画面に描
画された上記ワークのグラフィックデイスプレィに対し
、カーソルを移動させながら加工開始の位置決めを行い
、この加工開始点を制御器に記憶させる。In this invention, a sensor detects the photographing of an arbitrarily placed workpiece using optical signals from orthogonal optical signals, and a trigonometric function is created between the photographed dimensions, the dimensions of each side of the workpiece, and the inclination of the workpiece. The correlation is determined in advance, and based on this correlation, the tilt is determined and corrected from the photographed value detected by the above sensor, and while moving the cursor on the graphic display of the above work drawn on the CRT screen. The machining start position is determined and the machining start point is stored in the controller.
第1図はこの発明の一実施例による加工装置におけるワ
ークとこのワークを載置して位置決めするテーブルとを
示す構成図であり、(1)はワーク、(2)はこのワー
ク[11t!試コしているテーブル、(8a)。FIG. 1 is a block diagram showing a workpiece in a processing device according to an embodiment of the present invention and a table on which the workpiece is placed and positioned. (1) is the workpiece, and (2) is the workpiece [11t! The table being tested (8a).
(8c)は直進性のごれた光信号(9)を発進する光信
号発イ=器、(8b)、 (8d)は光(3号(9)を
検出するセンサて、テーブル(2)内のX、Y座標系を
伝信してくる光信号(9)を検出するようになっている
。(7)は上記の光(=号元(=盟(8a) 、 (
8el、センサ(8b)、 (8d)を制御する制御
装置である。(8c) is an optical signal generator that emits a straight and dirty optical signal (9), (8b) and (8d) are sensors that detect light (No. 3 (9)), and table (2). It is designed to detect the optical signal (9) that transmits the X, Y coordinate system in
This is a control device that controls 8el, sensors (8b), and (8d).
上記のような構成のこの発明による加工装置において、
テーブル(2)上にワーク(1)が裁置されると、光イ
=号発イニ器(8a) 、 (8c)から光信された光
信号(9)はワーク(1)によって遮光される領域と遮
光されない領域とに区分され、それぞれが明暗の領域と
なってこの明暗の境界線ワーク(1)の外形を示すこと
になり、座標系の原点からこの境界線までの距離がワー
ク(1)の位置を表わす座標値となって、加工開始点を
決める基準面位置となる。In the processing apparatus according to the present invention configured as described above,
When the workpiece (1) is placed on the table (2), the optical signal (9) transmitted from the optical signal generators (8a) and (8c) is transmitted to the area blocked by the workpiece (1). The boundary line between the bright and dark areas indicates the outline of the workpiece (1), and the distance from the origin of the coordinate system to this boundary line is the workpiece (1). This becomes the coordinate value representing the position of , and becomes the reference plane position for determining the machining start point.
次に、ワーク(1)を任意にテーブル(2)上に裁置す
ると、テーブル座標系に対してワーク(1)の傾き誤差
が生じるので、この傾きによる誤差角(θ)を求めて補
正する必要がある。この誤差角すなわち補正角(θ)は
下記の計算によって求める。Next, when the workpiece (1) is arbitrarily placed on the table (2), an inclination error of the workpiece (1) with respect to the table coordinate system will occur, so the error angle (θ) due to this inclination is determined and corrected. There is a need. This error angle, that is, the correction angle (θ) is determined by the following calculation.
第2図(a)、 (b)、 (c)はワーク(1)の
外形寸法と傾きによる補正角との関係を示す図形であり
、(人1)、(人2)はワークの外形寸?去、(人、)
、(人、)は座標表示による暗領域の長さ、(θ)はワ
ーク(1)の傾きによる補正角である。Figures 2 (a), (b), and (c) are figures showing the relationship between the external dimensions of workpiece (1) and the correction angle due to inclination, and (person 1) and (person 2) are the external dimensions of workpiece (person 2). ? left, (person,)
, (person,) is the length of the dark area expressed in coordinates, and (θ) is the correction angle due to the inclination of the workpiece (1).
第2図h)の場合は、
A I CO5θ 二 BI
A 2sin O:[32
A s= I3 、+[3、= A 、 eosθ+A
、5in0−F’ % A 7!lIn (θ+φ)
−11)φ −jan−’ A 2 / A 1
に)[11,
(21式より
また、第2図(b)、 (e)の場合は、AIeosθ
=82
A2sinθ = B!
A、=A1cosθ十A2s+n。In the case of Fig. 2h), A I CO5θ 2 BI A 2sin O: [32 A s= I3 , +[3,= A , eosθ+A
,5in0-F'%A7! lIn (θ+φ)
-11) φ -jan-' A 2 / A 1
) [11,
(From Equation 21, in the case of Fig. 2 (b) and (e), AIeosθ
=82 A2sinθ = B! A, = A1 cos θ ten A2 s + n.
−G”−p A 7s+n (θ十φ)(4)すなわち
、(1)式と(4)式とは同一となるので第2図(a)
、 (b)、 (e)のいずれの場合でも補正角(θ)
は(5)より求められ、ワーク(1)が任意の傾きでテ
ーブル(2)上に裁置されても、外形寸法(Ale、
(A2)をあらかじめ測定しておき、暗領域の寸法(
A4)。-G”-p A 7s+n (θ0φ) (4) In other words, equations (1) and (4) are the same, so Figure 2 (a)
, (b), (e), the correction angle (θ)
is obtained from (5), and even if the workpiece (1) is placed on the table (2) at an arbitrary inclination, the external dimensions (Ale,
(A2) is measured in advance, and the dimension of the dark area (
A4).
(Δ、)を検出した制御装置(7)内に13 yIされ
た(5)式の関数関係によって補正角(θ)を演算する
。The correction angle (θ) is calculated by the functional relationship of the equation (5), which is 13 yI in the control device (7) that has detected the angle (Δ,).
次いで、第3図に示すようなデイスプレィモニタをCf
lT画面に描画させて、この画面内にX−Y座漂とワー
ク(1)のia=位置とを描き、キー(12)の操作に
よってカーソル(10)を移動させながらワーク(1)
の加工開始位置(xxpy□) fj!確認し、インプ
ットキー(13)を押して制御装置(7)に上記加工開
始位置(χIp y+)を記憶させる。以上の操作が終
了したら加工を開始し、ワーク(1)を所定の形状に加
工する。Next, set the display monitor as shown in Fig. 3 to Cf.
Draw on the IT screen, draw the X-Y drift and the ia = position of the work (1) on this screen, and move the cursor (10) by operating the key (12) to move the work (1).
Processing start position (xxpy□) fj! After confirming, press the input key (13) to store the processing start position (χIp y+) in the control device (7). After the above operations are completed, machining is started and the workpiece (1) is machined into a predetermined shape.
なお、上記実施例では、テーブル(2)が矩形あるいは
正方形の形状の例について示したが、このテーブル(2
1の形状とは係わりなく、テーブル(2)上にワーク(
1)を裁置してテーブル(2)とワーク(1)との位置
決めを行い、この位置決めを行なったワーク(1)をコ
ンピュータグラフィック機能を有する制御装置を備えた
加工装置に適用してもよく、上記実施例と同様の効果を
奏する。In the above embodiment, the table (2) has a rectangular or square shape.
Regardless of the shape of 1, the workpiece (
1), the table (2) and the workpiece (1) are positioned, and the positioned workpiece (1) may be applied to a processing device equipped with a control device having a computer graphics function. , the same effect as the above embodiment is achieved.
この発明は以上説明したとおり、加工装置におけるテー
ブル上に直交して設けた光信号光信器とこれらに対向し
て設けたセンサとによって、テーブル上に任意に裁置し
たワークの傾きによる補正角を制御装置が演算し、さら
にCRT画面に描画されたグラフィックデイスプレィに
よって、加工開始位置を定めるように構成しなので、加
工に際して段取時間を大幅に短縮できるとともに、ワー
クの加工開始点の位置決め精度が向上する効果がある。As explained above, this invention uses an optical signal optical transmitter installed perpendicularly on the table of a processing device and a sensor installed opposite to these to adjust the correction angle due to the inclination of a workpiece arbitrarily placed on the table. Since the processing start position is determined by the control device's calculations and the graphic display drawn on the CRT screen, it is possible to significantly reduce the setup time during processing, and to improve the positioning accuracy of the processing start point of the workpiece. It has an improving effect.
第1図はこの発明の一実施例の加工装置におけるワーク
とテーブルの主要部を示す構成図、第2図は第1図にお
けるワークの形状と傾き角との関係を説明するための図
、第3図はCRT画面において加工開始点の位置決めを
行う動作を説明するための図、第4図はテーブル上にワ
ークをiil ?して加工を行う従来の加工装この一例
を示す構成図である。
図において、(1)は被加工物(ワーク) 、(2+は
テーブル、(3)は加工手段、(7)は制御装置、(8
a)。
(8c)は光13号発信器、(8bl 、 (gd)は
セノ9゜なお、図中同−符弓は同一部分または相当部分
や示す。FIG. 1 is a configuration diagram showing the main parts of a workpiece and a table in a processing apparatus according to an embodiment of the present invention, FIG. 2 is a diagram for explaining the relationship between the shape of the workpiece and the inclination angle in FIG. Figure 3 is a diagram for explaining the operation of positioning the machining start point on the CRT screen, and Figure 4 is a diagram for explaining the operation of positioning the machining start point on the CRT screen. 1 is a configuration diagram showing an example of a conventional machining device that performs machining. In the figure, (1) is the workpiece, (2+ is the table, (3) is the processing means, (7) is the control device, and (8) is the table.
a). (8c) is the optical No. 13 transmitter, (8bl), and (gd) is the Seno 9°. Note that the arrows in the figure indicate the same or equivalent parts.
Claims (1)
段とを対向させて加工する加工装置において、上記テー
ブル面上で互いに直交する一対の光信号発伸器とこれら
の光信号発信器と対向するセンサとを設け、上記テーブ
ル上に上記被加工物を載置して生じる明暗領域を上記セ
ンサによって検出し、この検出値に基づいて上記テーブ
ルの座標系に対する上記被加工物の載値位置の傾きを制
御装置によって補正を行うとともに、CRT画面に描画
された上記被加工物の図面に基づいて、加工開始点の位
置決めを行うようになされたことを特徴とする被加工物
の位置検出装置。In a processing device that places a workpiece on a table and processes the workpiece with the workpiece and processing means facing each other, a pair of optical signal generators and these optical signal generators are perpendicular to each other on the table surface. A sensor is provided facing the workpiece, the sensor detects a bright and dark area that occurs when the workpiece is placed on the table, and based on the detected value, the workpiece is placed on the coordinate system of the table. The position of the workpiece, characterized in that the slope of the value position is corrected by a control device, and a machining start point is determined based on a drawing of the workpiece drawn on a CRT screen. Detection device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14682086A JPS637255A (en) | 1986-06-25 | 1986-06-25 | Position detecting device for workpiece |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14682086A JPS637255A (en) | 1986-06-25 | 1986-06-25 | Position detecting device for workpiece |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS637255A true JPS637255A (en) | 1988-01-13 |
Family
ID=15416268
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14682086A Pending JPS637255A (en) | 1986-06-25 | 1986-06-25 | Position detecting device for workpiece |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS637255A (en) |
-
1986
- 1986-06-25 JP JP14682086A patent/JPS637255A/en active Pending
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