JPH0430949A - Work detecting with proximity switch - Google Patents
Work detecting with proximity switchInfo
- Publication number
- JPH0430949A JPH0430949A JP13141090A JP13141090A JPH0430949A JP H0430949 A JPH0430949 A JP H0430949A JP 13141090 A JP13141090 A JP 13141090A JP 13141090 A JP13141090 A JP 13141090A JP H0430949 A JPH0430949 A JP H0430949A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- proximity switch
- workpiece
- sensor
- master
- 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
- 238000001514 detection method Methods 0.000 claims description 15
- 238000007689 inspection Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 230000008054 signal transmission Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Machine Tool Sensing Apparatuses (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、工作機械の主軸側に装着された近接スイッチ
によりワークの検測、検知を行う近接スイッチによるワ
ーク検測、検知方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for inspecting and detecting a workpiece using a proximity switch, in which a proximity switch mounted on the spindle side of a machine tool inspects and detects a workpiece.
［従来の技術］
ワーク検測、検知を行う手段としてタッチプローブが広
く使用されているが、該タッチプローブは比較的高精度
の検測、検知の場合に適用されるもので、コスト的にも
高価なものである。そのため、精度がそれ程高くなくて
もよい場合のワークの検測、検知には近接スイッチが使
用される。すなわち、近接スイッチをワークに近接する
ことによって発生するＯＮ信号と、ワークから離隔する
ことによって生ずるＯＦＦ信号を工作機械のＮＣ装置側
に入力し、ワークの寸法測定（検測）やワークの有無（
検知）を行うものである。[Prior Art] Touch probes are widely used as a means for inspecting and detecting workpieces, but these touch probes are used for relatively high-precision inspection and detection, and are cost-effective. It's expensive. Therefore, proximity switches are used for workpiece inspection and detection when the accuracy is not required to be very high. In other words, an ON signal generated when the proximity switch is brought close to the workpiece, and an OFF signal generated when the proximity switch is moved away from the workpiece are input to the NC device of the machine tool to measure the dimensions (inspection) of the workpiece and the presence or absence of the workpiece.
detection).
［発明が解決しようとする課題］
第１図は、近接スイッチとして、ＬＳセンサ１を使用し
た場合を示す。ＬＳセンサ１はツールホルダ２の先端側
に装着され、ツールホルダ２は工作機械の主軸３内に着
脱可能に挿着される。[Problems to be Solved by the Invention] FIG. 1 shows a case where an LS sensor 1 is used as a proximity switch. The LS sensor 1 is mounted on the tip side of a tool holder 2, and the tool holder 2 is removably inserted into a main shaft 3 of a machine tool.
テーブル４上シこ載置されているワーク５を検測又は検
知するには、主軸３側又はテーブル４側をＺ−７方向に
移動させＬＳセンサＩとワーク５との近接によって生ず
るＯＮ信号と１両者の離隔によって生ずるＯＦＦ信号と
を基にこれ等の信号を工作機械のＮＣ装置側に入力して
所定の演算等を行う。To inspect or detect the workpiece 5 placed on the table 4, move the spindle 3 side or the table 4 side in the Z-7 direction and connect the ON signal generated by the proximity of the LS sensor I and the workpiece 5. 1. Based on the OFF signal generated by the separation between the two, these signals are input to the NC device side of the machine tool and predetermined calculations are performed.
第２図の上方の図に示すように、ＬＳセンサ１を図の２
０方向からワーク５に近接する場合には、まず、ＯＦＦ
信号の状態でＬＳセンサ１はワーク５に近接し１位置Ａ
でＯＮ信号が発生し、位置Ｂまで進んで再びＯＦＦ信号
が発生することになる。As shown in the upper part of Figure 2, the LS sensor 1 is
When approaching the workpiece 5 from the 0 direction, first turn the OFF
In the signal state, the LS sensor 1 approaches the workpiece 5 and is at the 1 position A.
An ON signal is generated at the position B, and an OFF signal is generated again when the signal advances to position B.
一方、第２図の下方の図にしめすようにＬＳセンサ１を
前記ｚ１方向と逆の図の７２の方向からワーク５に近接
させる場合には１位置ＣでＯＮ信号が発生し、位置りで
ＯＦ’ Ｆ信号が発生する。On the other hand, when the LS sensor 1 is brought close to the workpiece 5 from the direction 72 in the figure, which is opposite to the z1 direction, as shown in the lower part of FIG. OF'F signal is generated.
第２図において、ワーク５は定位置にあるたぬ、ＯＮ信
号およびＯＦＦ信号が発生する位置は原則的には同一で
あるはずである。すなわち、一端側の位置Ａと位置りは
一致し、他端側の位置Ｂと位置Ｃとは一致するはずであ
る。しかしながら、工作機械の主軸３まわりにも機械的
カタ等があり。In FIG. 2, the workpiece 5 is in a fixed position, and the positions where the ON signal and OFF signal are generated should be basically the same. That is, the position A on one end should match the position, and the position B and C on the other end should match. However, there are also mechanical scratches around the main shaft 3 of the machine tool.
また、ＬＳセンサにも電気的のヒステリシス特性を有し
ている。そのため、第２図に示すように、ＬＳセンサ１
をワーク５に近接する方向が異なるとΔＸで示すような
位置ズレが生ずる。すなわち、この位置ズレΔＸの分だ
けＯＮ、ＯＦＦ信号に誤差が生ずることになる。それに
加えて、主軸３まわりやＬＳセンサ１自体も熱の影響を
受けて伸縮するため、その分だけＯＮ、ＯＦＦ信号の発
生する位置に位置ズレが生ずる。Furthermore, the LS sensor also has electrical hysteresis characteristics. Therefore, as shown in FIG.
If the direction of approaching the workpiece 5 is different, a positional deviation as shown by ΔX occurs. That is, an error occurs in the ON and OFF signals by the amount of this positional deviation ΔX. In addition, since the area around the main shaft 3 and the LS sensor 1 itself expands and contracts under the influence of heat, a positional shift occurs in the position where the ON and OFF signals are generated.
ＬＳセンサ１そのものを使用してワーク５の検測、検知
を行うこと自体には特に問題のない場合でも、前記した
ような位置ズレによる誤差は許容出来ない場合が多い。Even if there is no particular problem in measuring or detecting the workpiece 5 using the LS sensor 1 itself, errors due to positional deviation as described above are often unacceptable.
本発明は、近接スイッチでワークの検測、検知を行う場
合の前記誤差を極力低減させ、安価で、取り扱い易い近
接スイッチをワーク検測、検知に適用するようにする近
接スイッチによるワーク横側、検知方法を提供すること
を目的とするものである。The present invention reduces the error as much as possible when inspecting and detecting a workpiece using a proximity switch, and makes it possible to apply an inexpensive and easy-to-handle proximity switch to the workpiece inspection and detection. The purpose is to provide a detection method.
［課題を解決するための手段］
本発明は、以上の目的を達成するために、工作機械の主
軸側に装着された近接スイッチのＯＮ。[Means for Solving the Problems] In order to achieve the above object, the present invention turns on a proximity switch mounted on the spindle side of a machine tool.
ＯＦＦ信号によるワークの検測、検知方法であって、該
近接スイッチをワークに対し常に一定方向から近接せし
めてＯＮ、ＯＦＦ信号を発生させると共番ニ一定位置に
セットされたマスタにより。A method of inspecting and detecting a workpiece using an OFF signal, in which the proximity switch is always brought close to the workpiece from a fixed direction and ON and OFF signals are generated by a master set at a fixed position with the same number.
ワークの検測、検知に先立って前記近接スイッチの位置
ズレを検知し、ワーク検測、検知時におけるＯＮ、ＯＦ
Ｆ信号を前記位置ズレ値だけ補止するように近接スイッ
チによるワーク検測検知方法を特徴とするものである。Prior to inspecting and detecting the workpiece, the positional shift of the proximity switch is detected, and ON/Off during workpiece inspection and detection is detected.
The present invention is characterized by a workpiece inspection and detection method using a proximity switch so that the F signal is corrected by the positional deviation value.
［作用コ
近接スイッチの前記ヒステリシス特性を除去するために
、ワーク検測、検知時には一定の方向からのみ近接スイ
ッチをワークに近接させるようにする。また、ワークの
検測、検知に先立って、マスタの位置測定を行い、近接
スイッチの′ＩｉＡ度影響等による誤差を検知し、その
分だけＯＮ、ＯＦＦ信号の補正を行うようにする。以上
により位置ズレ誤差が解消され、高精度のワーク検測、
検知が行われる。[Operation] In order to eliminate the hysteresis characteristic of the proximity switch, the proximity switch is brought close to the workpiece only from a certain direction when inspecting or detecting the workpiece. In addition, prior to inspection and detection of the workpiece, the position of the master is measured, errors due to the influence of the proximity switch are detected, and the ON and OFF signals are corrected accordingly. As a result of the above, positional deviation errors are eliminated, allowing for highly accurate workpiece inspection.
Detection is performed.
［実施例コ
以下、本発明の一実施例を図面に基づき説明するや
本実施例では、近接スイッチとしてＬＳセンサ１を作用
し、ＮＣ装置６側への信号伝達手段としてリモート入出
力センサ７を使用した場合について説明する。ＬＳセン
サ１はマシニングπフタのツールマガジン（図ａ＠）と
主軸３との間で自動交換されるツールホルダ２の先端側
に装着される。[Embodiment 1] Hereinafter, an embodiment of the present invention will be described based on the drawings. In this embodiment, the LS sensor 1 acts as a proximity switch, and the remote input/output sensor 7 acts as a signal transmission means to the NC device 6 side. Let's explain when it is used. The LS sensor 1 is attached to the tip side of a tool holder 2 that is automatically exchanged between the tool magazine (Fig. a@) of the machining π lid and the main spindle 3.
リモート人出力センサ７は、伝送部８と出力部９とから
なり、伝送部８はツールホルダ２側に装着され、出力部
９は伝送部８と対峙する主軸３側に装着され、ＮＣ装置
６と連結する。出力部９は発振回路と、検波回路、トリ
ガ回路および出力増巾回路（いずれも回路）のものから
なり、伝送部８は発振コイルコンデンサ、抵抗およびス
イッチ部を有する発振回路から構成される。出力部９に
生じた誘導磁界が伝送部７に伝わり、伝送部７の閉回路
内に生ずる誘導電流の消費により出力部９の電圧が低下
し、その電圧低下がある設定レベル以下になると出力信
号としてＮＣ装置６側で確認されるように構成される。The remote human output sensor 7 consists of a transmission section 8 and an output section 9. The transmission section 8 is attached to the tool holder 2 side, the output section 9 is attached to the main shaft 3 side facing the transmission section 8, and the NC device 6 Connect with. The output section 9 consists of an oscillation circuit, a detection circuit, a trigger circuit, and an output amplification circuit (all circuits), and the transmission section 8 consists of an oscillation circuit having an oscillation coil capacitor, a resistor, and a switch section. The induced magnetic field generated in the output section 9 is transmitted to the transmission section 7, and the voltage of the output section 9 decreases due to the consumption of the induced current generated in the closed circuit of the transmission section 7. When the voltage decreases below a certain set level, the output signal is output. The configuration is such that the information is confirmed on the NC device 6 side.
伝送部８のスイッチ部の開閉をＬＳセンサ１のＯＮ、Ｏ
ＦＦ信号により行うことにより、ＯＮ、ＯＦＦ信号がＮ
Ｃ装置６側に伝達されるものである。The switch section of the transmission section 8 is opened and closed by the ON and O of the LS sensor 1.
By using the FF signal, the ON and OFF signals are
This is transmitted to the C device 6 side.
以上の構造のＬＳセンサ１を第２図に示した一定方向、
例えば、ｚ２方向からのみワーク５に近接させるように
する。そのため、ＯＮ信号は常に位置Ｃで発生し、ＯＦ
Ｆ信号は位置りで発生することになる。The LS sensor 1 having the above structure is oriented in a certain direction as shown in FIG.
For example, it is made to approach the workpiece 5 only from the z2 direction. Therefore, the ON signal always occurs at position C and OF
The F signal will be generated at the position.
一方、第３図に示すように、ＬＳセンサ１の温度変化等
の影響による位置ズレΔＸをキャンセルする方法として
マスタ１０による事前測定が行われる。マスタ１０は工
作機械の基準面１１から一定距離ｘ１だけ離れた位置に
おいてテーブル４上に正確に載置される。ワーク５の測
定に先立ち、ＬＳセンサ１を第２図の７２方向からマス
タ１０側に近接させ、ＯＮ信号の発生する位置を基準面
１１から測定し、それをＸ２とする。ＬＳセンサ１が温
度変化等の影響を受けない場合にはＸ２ｘ０のはずであ
るが、Ｘ２−Ｘ□＝ΔＸの誤差が生ずる。このΔＸの値
がＬＳセンサ１の位置ズレ値となる。従って、ワーク５
の測定時には△Ｘの値だけＯＮ、ＯＦＦ信号の発生位置
の補正を行うことにより、ＬＳセンサ１の温度変化等に
よる位置ずれ誤差をキャンセルすることが出来る。On the other hand, as shown in FIG. 3, preliminary measurement by the master 10 is performed as a method of canceling the positional deviation ΔX due to the influence of temperature changes of the LS sensor 1, etc. The master 10 is accurately placed on the table 4 at a position separated by a fixed distance x1 from the reference surface 11 of the machine tool. Prior to measuring the workpiece 5, the LS sensor 1 is brought close to the master 10 side from the direction 72 in FIG. 2, and the position where the ON signal is generated is measured from the reference plane 11, and this is defined as X2. If the LS sensor 1 is not affected by temperature changes etc., it should be X2x0, but an error of X2-X□=ΔX occurs. The value of this ΔX becomes the positional deviation value of the LS sensor 1. Therefore, work 5
By correcting the generation positions of ON and OFF signals by the value of ΔX when measuring , it is possible to cancel positional deviation errors due to temperature changes of the LS sensor 1 and the like.
［発明の効果コ 本発明によれば、次のような効果が上げられる。[Effects of invention According to the present invention, the following effects can be achieved.
１）ワークに対して近接スイッチを常に一定方向から近
接するようにしたため、機械的、電気的のヒステリシス
特性がキャンセルされ、ＯＮ、ＯＦＦ信号の発生位置ズ
レがなくなる。1) Since the proximity switch is always brought close to the workpiece from a fixed direction, mechanical and electrical hysteresis characteristics are canceled, eliminating deviations in the generation positions of ON and OFF signals.
２）温度変化等の影響による近接スイッチの位置ズレか
マスタによる事前測定による補正値で補正することによ
り低減され、より正確なワークの検測、検知が行われる
。2) The positional deviation of the proximity switch due to the influence of temperature changes, etc. is reduced by correcting it with the correction value measured in advance by the master, and more accurate workpiece inspection and detection is performed.
３）高価なタッチプローブのような測定機具の替りに近
接スイッチを用いて比較的高精度のワクの検測、検知が
行われ、安価に実施出来る。3) A proximity switch can be used instead of an expensive measuring instrument such as a touch probe to measure and detect a defect with relatively high accuracy, and can be carried out at low cost.
第１図は本発明の一実施例の構成図、第２図は近接スイ
ッチによるヒステリシス誤差を説明するための説明図、
第３図は実施例におけるマスタの事前測定方法を説明す
るための説明図である。
１・・・ＬＳセンサ、２・・・ツールホルダ、３・・・
主軸、４・・・テーブル、５・・・ワーク、６・・・Ｎ
Ｃ装置、７・・・リモート入出力センサ、８・・・伝送
部、９・・・出力部、１０・・・マスタ。
牙
図
牙
図FIG. 1 is a configuration diagram of an embodiment of the present invention, FIG. 2 is an explanatory diagram for explaining hysteresis error caused by a proximity switch,
FIG. 3 is an explanatory diagram for explaining the master pre-measurement method in the embodiment. 1... LS sensor, 2... tool holder, 3...
Spindle, 4...Table, 5...Workpiece, 6...N
C device, 7...Remote input/output sensor, 8...Transmission section, 9...Output section, 10...Master. fang illustration
Claims (1)
ＦＦ信号によるワークの検測、検知方法であって、該近
接スイッチをワークに対し常に一定方向から近接せしめ
てＯＮ、ＯＦＦ信号を発生させると共に、一定位置にセ
ットされたマスタにより、ワークの検測、検知に先立っ
て前記近接スイッチの位置ズレを検知し、ワーク検測、
検知時におけるＯＮ、ＯＦＦ信号を前記位置ズレ値だけ
補正するようにすることを特徴とする近接スイッチによ
るワーク検測、検知方法。ON/O of the proximity switch installed on the spindle side of the machine tool
This is a workpiece inspection and detection method using an FF signal, in which the proximity switch is always brought close to the workpiece from a fixed direction to generate ON and OFF signals, and the workpiece is inspected by a master set at a fixed position. , detecting the positional shift of the proximity switch prior to detection, and inspecting the workpiece;
A workpiece inspection and detection method using a proximity switch, characterized in that ON and OFF signals at the time of detection are corrected by the positional deviation value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13141090A JPH0430949A (en) | 1990-05-23 | 1990-05-23 | Work detecting with proximity switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13141090A JPH0430949A (en) | 1990-05-23 | 1990-05-23 | Work detecting with proximity switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0430949A true JPH0430949A (en) | 1992-02-03 |
Family
ID=15057322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13141090A Pending JPH0430949A (en) | 1990-05-23 | 1990-05-23 | Work detecting with proximity switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0430949A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000070298A1 (en) * | 1999-05-13 | 2000-11-23 | Marposs Societa Per Azioni | System for detecting linear dimensions of mechanical workpieces, with wireless signal transmission units |
| JP2017142158A (en) * | 2016-02-10 | 2017-08-17 | メレキシス テクノロジーズ エヌ ヴィ | Displacement detector |
-
1990
- 1990-05-23 JP JP13141090A patent/JPH0430949A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000070298A1 (en) * | 1999-05-13 | 2000-11-23 | Marposs Societa Per Azioni | System for detecting linear dimensions of mechanical workpieces, with wireless signal transmission units |
| US6526670B1 (en) | 1999-05-13 | 2003-03-04 | Marposs Societa' Per Azioni | System for detecting linear dimensions of mechanical workpieces, with wireless signal transmission units |
| JP2017142158A (en) * | 2016-02-10 | 2017-08-17 | メレキシス テクノロジーズ エヌ ヴィ | Displacement detector |
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