JPS6120802A - Method and instrument for measuring work - Google Patents
Method and instrument for measuring workInfo
- Publication number
- JPS6120802A JPS6120802A JP14205084A JP14205084A JPS6120802A JP S6120802 A JPS6120802 A JP S6120802A JP 14205084 A JP14205084 A JP 14205084A JP 14205084 A JP14205084 A JP 14205084A JP S6120802 A JPS6120802 A JP S6120802A
- Authority
- JP
- Japan
- Prior art keywords
- measuring
- workpiece
- measurement
- bar body
- compressed air
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/002—Details
- G01B3/008—Arrangements for controlling the measuring force
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/37—Measurements
- G05B2219/37405—Contact detection between workpiece and tool, probe, feeler
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Automation & Control Theory (AREA)
- Measuring Arrangements Characterized By The Use Of Fluids (AREA)
Abstract
Description
【発明の詳細な説明】
産業上東机且分見
本発明はワーク計測方法および装置に関するものであり
、更に詳しくは、ワークの寸法を計測するための測定球
の変位量に応じてフイーラ支持部位からの空気の漏れ量
を制御し、該空気の漏れによる背圧の変化を利用してワ
ークと測定球との接触信号を出力させるワーク計測方法
および装置に関するものである。[Detailed Description of the Invention] The present invention relates to a method and device for measuring a workpiece.More specifically, the present invention relates to a method and device for measuring a workpiece. The present invention relates to a workpiece measuring method and apparatus that controls the amount of air leaked from the air and outputs a contact signal between the workpiece and a measuring ball by utilizing changes in back pressure caused by the air leakage.
従沫包肢血
タッチセンサとして周知の三軸接触検出器を用いて各種
の自動計測が行われている。自動計測の一例として、以
下、ワークの穴中心位置の測定要領を説明する。第4図
および第5図に示すように、数値制御工作機械、例えば
マシニングセンタの送り軸を駆動して、主軸に装着され
たタッチセンサ(2)をX軸のプラス方向もしくはマイ
ナス方向に移動させる。ワーク(1)と接触した瞬間に
前記タッチセンサからタッチ・トリガー信号が発信され
、このときの数値制御工作機械の移動量かムワークのX
軸方向の長さ、もしくは幅中心が求められる。X軸方向
に沿っても同様の計測動作を行うことにより、ワーク(
1)の穴径もしくは穴中心位置の測定が可能となる。Various automatic measurements are performed using a triaxial contact detector known as a blood touch sensor. As an example of automatic measurement, the procedure for measuring the center position of a hole in a workpiece will be explained below. As shown in FIGS. 4 and 5, the feed shaft of a numerically controlled machine tool, such as a machining center, is driven to move the touch sensor (2) attached to the main shaft in the plus or minus direction of the X-axis. A touch trigger signal is transmitted from the touch sensor at the moment of contact with the workpiece (1), and the amount of movement of the numerically controlled machine tool at this time or the workpiece's
The axial length or width center is determined. By performing the same measurement operation along the X-axis direction, the workpiece (
1) The hole diameter or hole center position can be measured.
タッチセン+(2)は、種々の構造のものが市販されて
いるが、既存のタッチセンサ(2)の基本的な測定原理
は、該タッチセンサの先端に取付けられた測定球(3)
がワーク(1)に接触した際に生じる変位を利用して電
気的導通をON・OFFするものが主流を占めている。Touch sensor + (2) is commercially available with various structures, but the basic measurement principle of the existing touch sensor (2) is that the measuring ball (3) is attached to the tip of the touch sensor.
The mainstream is one that turns on and off electrical continuity by utilizing the displacement that occurs when the metal contacts the workpiece (1).
しかしながら、このような測定原理に依る場合は、電気
的導通を利用していることに起因して、前記タッチセン
サを含む計測バーの全体構造が複雑化し、しかもタッチ
センサ(2)から発信される電気的な検知信号を数値制
御工作機械の主軸頭に伝達するための電気信号授受装置
が必要となる。However, when relying on such a measurement principle, the overall structure of the measurement bar including the touch sensor becomes complicated due to the use of electrical continuity, and furthermore, the overall structure of the measurement bar including the touch sensor becomes complicated. An electrical signal transmission/reception device is required to transmit the electrical detection signal to the spindle head of the numerically controlled machine tool.
一方、タッチセンサ(2)は、一般に、工具と同一の形
状寸法を有するシャンク部に取付けられ且つ、自動工具
交換装置(Auton+atic ToolChang
er、 ATCと略称)により、数値制御工作機械の主
軸と工具マガジンの間を自動的に移動するため、非接触
形の電気信号授受装置を備えている必要がある。斯かる
非接触形の電気信号授受装置としては、電磁誘導を利用
したものやフォトダイオードを使用したもの等が知られ
ているが、ワークの加工現場にこのような形式の電気信
号授受装置を設置すると、鋳物の微粉末やワークの切り
屑等が付着し、誤信号が発信される虞れがある。On the other hand, the touch sensor (2) is generally attached to a shank portion having the same shape and dimensions as the tool, and is attached to an automatic tool changer (Auto+atic ToolChang).
In order to automatically move between the spindle of a numerically controlled machine tool and the tool magazine using the ATC (abbreviated as ATC), it is necessary to be equipped with a non-contact electrical signal exchange device. Such non-contact electric signal exchange devices are known to use electromagnetic induction or photodiodes, but it is difficult to install these types of electric signal exchange devices at workpiece processing sites. Then, there is a risk that fine powder of the casting, chips of the workpiece, etc. may adhere, and an erroneous signal may be transmitted.
べ ′ しよ°とする 占
本発明は、公知のフォトダイオードや電磁誘導を利用し
た非接触形の電気信号授受装置によってワークの寸法を
計測する際に問題となっていた上記の如き不都合を解消
し得る、圧縮空気の圧力の変化をワーク計測の出力信号
として使用する新規なワーク計測方法および装置を提供
することをその主要な目的とするものである。The present invention eliminates the above-mentioned inconveniences that occur when measuring the dimensions of a workpiece using a known non-contact electrical signal exchange device that uses photodiodes or electromagnetic induction. The main object of the present invention is to provide a new method and apparatus for measuring a workpiece that uses changes in the pressure of compressed air as an output signal for measuring the workpiece.
本発明の他の主要な目的は、構造の簡易性と計測の精度
を向上せしめた、電気的な検知信号の代わりに圧縮空気
の圧力信号を使用する三輪接触検出器を提供することに
ある。Another main object of the present invention is to provide a three-wheel contact detector that uses a compressed air pressure signal instead of an electrical detection signal, with improved structural simplicity and improved measurement accuracy.
”るための
上記目的に鑑みて本発明は、ワーク(10)の寸法を計
測するための測定球’(11)の変位に応じて測定バー
本体(12)のツイータ支持部位(13)からの空気流
の漏れ量を変化せしめ、該空気流の漏れによるツイータ
(14)への背圧の変化を検出してワーク(10)と測
定球(11)との接触信号を出力させるワーク計測方法
を第1の要旨とするものである。In view of the above-mentioned object to measure the dimensions of the workpiece (10), the present invention provides a method for measuring the size of the measurement bar body (12) from the tweeter support portion (13) in response to the displacement of the measurement ball (11) for measuring the dimensions of the workpiece (10). A workpiece measurement method that changes the amount of airflow leakage, detects a change in back pressure on the tweeter (14) due to the airflow leakage, and outputs a contact signal between the workpiece (10) and the measuring ball (11). This is the first summary.
更に本発明は、自動工具交換装置(ATC)により工作
機械の主軸(15)に装着されるワーク(10)計測用
の測定バー(16)に於いて、測定バー本体(12)の
内部に空気導入口(17)からツイータ支持部位(13
)に向かって延びる圧縮空気の流路(18)を形成する
と共に、前記測定バー本体(12)の先端にツイータ(
14)の基端部に設けられたテーバ状係合面(19)を
支持。Furthermore, the present invention provides a measuring bar (16) for measuring a workpiece (10) mounted on the main shaft (15) of a machine tool by an automatic tool changer (ATC), in which air is removed inside the measuring bar body (12). From the introduction port (17) to the tweeter support part (13
), and a tweeter (18) is formed at the tip of the measurement bar body (12).
14) supports the tapered engagement surface (19) provided at the proximal end.
するテーバ状座面(20)を形成し、またツイータ(1
4)のテーバ状係合面(19)を加圧スプリング(21
)による付勢下に前記テーバ状座面(20)に対し軸線
方向に沿って変位自在に対向配置して三軸接触検出器を
形成してなるワーク計測装置を第2の要旨とするもので
ある。A tapered seat surface (20) is formed, and a tweeter (1) is formed.
4), the tapered engagement surface (19) is pressed against the pressurizing spring (21).
The second gist is a workpiece measuring device in which a three-axis contact detector is formed by disposing the workpiece measuring device so as to be displaceable in the axial direction with respect to the tapered seating surface (20) under a biasing force of be.
大隻桝
数値制御工作機械、例えばマシニングセンタ(M)の主
軸(15)内へ嵌着するシャンク(22)の形状ならび
に寸法を汎用の工具(図示省略)と略同−に構成した測
定バー(16)は、数値制御プログラムに従って工具マ
ガジン(図示省略)内から自動的に呼び出され、前記マ
シニングセンタ(M)の主軸(15)に装着し得るよう
になっている。A measuring bar (16) with a shank (22) that fits into the main shaft (15) of a large numerically controlled machine tool, such as a machining center (M), has a shape and dimensions that are approximately the same as a general-purpose tool (not shown). ) is automatically called out from a tool magazine (not shown) according to a numerical control program, and can be attached to the main shaft (15) of the machining center (M).
第1図は本発明装置の主要部分を構成する三輪接触検出
器の部分縦断面図であり、主軸頭(23)内には前記測
定バー(16)を嵌装固着してなる主軸(15)が支承
されている。測定バー本体(12)は、その基端部に形
成されたシャンク(22)を主軸(15)のテーパ部(
24)に嵌着させることによって一定のワーク計測位置
を確保し得るように構成されてい。一方、測定バー本体
(12)の先端部には、加圧スプリング(21)7によ
り常時軸線方向前方に向かって押圧されるツイータ(1
4)が、該ツイータの基端部に設けられたテーパ状係合
面(19)を前記測定バー本体(12)の先端部に形成
されたテーパ状座面(20)に密着させた状態で配置さ
れている。ツイータ(14)の先端には、ワーク(10
)の寸法を測定するための測定球(11)がワーク(1
0)と接触自在に取付けられている。測定バー(16)
には、系外の図示しない圧空源から供給された圧縮空気
を測定バー本体(12)の先端に形成された空気室(2
4)内に導入するためのアーム(25)が、該測定バー
本体(12)から突出した状態で取付けられており、該
アーム(25)からは更にロンド(26)が前記測定バ
ー本体(12)と軸線の方向を略一致させて突出してい
る。測定バー本体(12) 、アーム(25)ならびに
ロンド(26)の内部には、接続口(27)から導入さ
れた圧縮空気を前記空気室(24)に供給するための空
気流路(18)、(28a)および(28b)が連通状
態で設けられている。参照番号(29)は圧縮空気中の
一埃等を除去するために前記空気流路内に配設されたフ
ィルタであって、これに関連して空気漏れを防止する目
的で該空気流路内の所定の位置には公知のO・リングが
嵌装固着されている。一方、マシニングセンタ゛(M)
の主軸、@ (23)側には、測定バー(16)を自動
工具交換装置(ATC)により主軸(15)に自動装着
した際、系外の圧空源から供給された圧縮空気を測定バ
ー(16)内に供給するための接続装置が設けられてい
る。即ち、ベースプレート(30)とキャンプ(31)
の間には、X−Y平面内に於いて僅かの遊隙(32)を
保持して摺動自在に支持されたブツシュ(33)が設け
られており、該ブツシュの内径穴内にはスプリング(3
4)によって押圧されブツシュ(33)の軸線方向に沿
って摺動可能なスライダ(35)が配設されている。FIG. 1 is a partial longitudinal sectional view of a three-wheeled contact detector constituting the main part of the device of the present invention, in which the main shaft (15) has the measuring bar (16) fitted and fixed in the main shaft head (23). is supported. The measuring bar body (12) connects the shank (22) formed at its base end to the tapered part (15) of the main shaft (15).
24) so that a constant workpiece measurement position can be secured. On the other hand, at the tip of the measuring bar body (12), there is a tweeter (1) that is constantly pressed forward in the axial direction by a pressurizing spring (21) 7.
4) is in a state in which the tapered engagement surface (19) provided at the base end of the tweeter is in close contact with the tapered seat surface (20) formed at the tip of the measurement bar body (12). It is located. A workpiece (10) is attached to the tip of the tweeter (14).
) is used to measure the dimensions of the workpiece (1).
0) so that it can be freely contacted. Measuring bar (16)
The compressed air supplied from a compressed air source (not shown) outside the system is fed into an air chamber (2) formed at the tip of the measuring bar body (12).
An arm (25) for introducing into the measuring bar body (12) is attached in a protruding state from the measuring bar body (12), and a rond (26) is further attached to the measuring bar body (12) from the arm (25). ) and protrudes with the axis direction substantially aligned. Inside the measurement bar body (12), arm (25), and rond (26), there is an air flow path (18) for supplying compressed air introduced from the connection port (27) to the air chamber (24). , (28a) and (28b) are provided in communication. Reference number (29) is a filter disposed within the air flow path to remove dust etc. from the compressed air, and a filter disposed within the air flow path for the purpose of preventing air leakage. A known O-ring is fitted and fixed at a predetermined position. On the other hand, machining center (M)
When the measuring bar (16) is automatically attached to the main shaft (15) by the automatic tool changer (ATC), the measuring bar (23) side receives compressed air supplied from a compressed air source outside the system. 16) A connection device is provided for supplying the inside. That is, the base plate (30) and the camp (31)
A bush (33) that is slidably supported with a slight clearance (32) in the X-Y plane is provided between the bushes, and a spring (33) is installed in the inner diameter hole of the bush. 3
A slider (35) is provided which is pressed by the bushing (3) and is slidable along the axial direction of the bush (33).
測定バー(16)が主軸(15)に装着されていない状
態に於いては、スライダ(35)はスプリング(34)
による付勢下に前方へ押圧され、このため該スライダの
側胴部に開口端を有する空気導通孔(36)は閉鎖状態
に維持されている。When the measuring bar (16) is not attached to the main shaft (15), the slider (35) is attached to the spring (34).
The air passage hole (36) having an open end in the side body of the slider is thus kept closed.
従って、測定バー(16)が装着されていないときは接
続口(27)からの圧縮空気の供給は遮断状態となる。Therefore, when the measurement bar (16) is not attached, the supply of compressed air from the connection port (27) is cut off.
これに対し測定バー(16)が主軸(15)に装着され
ている状態に於いては、ロンド(26)の先端部がスラ
イダ(35)の先端部と接触し、そのままの状態でスラ
イダ(35)を軸線方向に沿って後退させる。スライダ
(35)の後朋動作の進行につれて空気導通孔(36)
は閉鎖状態から導通状態に移行し、測定バー(16)の
装着が完了した時点で、接続口(27)から供給された
圧縮空気は測定バー本体(12) 、アーム(25)な
らびにロンド(26)内の空気流路(28b )、(2
8a)および(18)を経て空気室(24)内に導入さ
れる。尚、ブツシュ(33)をx−y平面内に於いて摺
動自在な構造にしたのは、測定バー(16)を主軸(1
5)に装着する際のロンド(26)の位置決め誤差の影
響を排除するためで、ロンド(26)がブツシュ(33
)内に円滑に装入され得るように、該ロンドならびにブ
ツシュの先端部には干渉排除用のテーパ部が設けられて
いる。On the other hand, when the measurement bar (16) is attached to the main shaft (15), the tip of the rond (26) comes into contact with the tip of the slider (35), and the slider (35) remains in that state. ) is retracted along the axial direction. As the rear movement of the slider (35) progresses, the air passage hole (36)
transitions from the closed state to the conductive state, and when the measurement bar (16) is completely attached, the compressed air supplied from the connection port (27) is transferred to the measurement bar body (12), the arm (25), and the rond (26). ) in the air flow path (28b), (2
8a) and (18) into the air chamber (24). The reason why the bushing (33) is made to be slidable in the x-y plane is because the measurement bar (16) is attached to the main axis (1).
This is to eliminate the influence of positioning errors of the rond (26) when attaching it to the bushing (33).
), the tips of the rond and bushing are provided with a tapered part for eliminating interference.
以下、本発明装置の作動原理を説明りる。ツイータ(1
4)の先端の測定球(11)がワーク(10)に接触し
ていない第1図に示す状態では、一定の圧力を有する圧
縮空気が空気室(24)内に封入されており、該圧縮空
気による内圧および加圧スプリング(21)のバネ圧に
よりツイータ(14)は、測定バー本体(12)の前方
、つまりワーク(10)側に押圧され、しかも該ツイー
タ(14)は、その基端部に設けられたテーパ状係合面
(19)と、測定バー本体(12)の先端部に設けられ
たテーパ状座面(20)とを略完全に密着させた状態で
一定の位置に保持されている。このときの空気室(24
)からの圧縮空気の漏れは、前記テーパ状係合面(19
)とテーパ状座面(20)との間に残存している微細な
空気流通間隙に起因するものであるが、テーパ精度を向
上させることによってワーク(lO)と測定球(11)
とが接触していないときの圧縮空気の漏れ量は無視し得
る程度に減少させることができる。The operating principle of the device of the present invention will be explained below. Tweeter (1
In the state shown in FIG. 1, in which the measurement bulb (11) at the tip of 4) is not in contact with the workpiece (10), compressed air with a constant pressure is sealed in the air chamber (24), and the compressed air The tweeter (14) is pressed forward of the measuring bar body (12), that is, toward the workpiece (10), by the internal pressure of the air and the spring pressure of the pressurizing spring (21), and the tweeter (14) is pushed toward the workpiece (10) side. The tapered engagement surface (19) provided at the measuring bar body (12) and the tapered seat surface (20) provided at the tip of the measuring bar body (12) are held in a constant position with almost completely in contact with each other. has been done. The air chamber at this time (24
) leakage of compressed air from the tapered engagement surface (19
) and the tapered seating surface (20), but by improving the taper accuracy, the workpiece (lO) and the measuring ball (11)
The amount of compressed air leaking when there is no contact can be reduced to a negligible extent.
測定球(11)がワーク(10)に接触するとツイータ
(14)は、テーバ状係合面(19)を有するその基端
部を支点として変位し、この結果、前記テーパ状係合面
(19)とテーバ状座面(20)との間に隙間が生じ、
ツイータ(14)の変位に応じて圧縮空気の漏れ量が増
大する。このツイータ(14)の変位に対応する圧縮空
気の漏れ量の変化は、X軸、Y軸ならびにZ軸の何れの
軸方向変位に対しても同様に生起し得るものである。When the measurement ball (11) comes into contact with the workpiece (10), the tweeter (14) is displaced using its proximal end portion having a tapered engagement surface (19) as a fulcrum, and as a result, the tapered engagement surface (19) ) and the tapered seat surface (20), a gap is created,
The amount of compressed air leaking increases in accordance with the displacement of the tweeter (14). The change in the amount of compressed air leakage corresponding to the displacement of the tweeter (14) can similarly occur with respect to any axial displacement of the X-axis, Y-axis, and Z-axis.
一方、圧縮空気供給系は第2図に示すように圧空源(3
7) 、圧力調整弁(3B) 、固定絞り(39) 、
背圧検出器(40)ならびに測定バー(16)への圧縮
空気の供給装置(41)から構成されており、測定球(
11)とワーク(10)との接触に起因してツイータ(
14)に変位が生じた結果、前記背圧検出器(40)で
検出される背圧は漏れ量の増加に対応して低下する。第
3図はツイータ(14)の変位と、背圧検出器(40)
で検出された背圧との関係を表示する直交座標線図であ
り、公知の空気マイクロメータに於ける特性曲線と同様
の特性曲線が記録されている。On the other hand, the compressed air supply system has a compressed air source (3
7), pressure regulating valve (3B), fixed throttle (39),
It consists of a back pressure detector (40) and a compressed air supply device (41) to the measuring bar (16), and a measuring ball (41).
11) and the workpiece (10), the tweeter (
14), the back pressure detected by the back pressure detector (40) decreases in response to an increase in the amount of leakage. Figure 3 shows the displacement of the tweeter (14) and the back pressure detector (40).
This is a rectangular coordinate diagram showing the relationship between the air pressure and the back pressure detected in the air micrometer, and a characteristic curve similar to that of a known air micrometer is recorded.
ワーク(10)の寸法の測定に際し、ツイータ(14)
の先端に装着された測定球(11)とワーク(10)と
が接触すると、ツイータ(14)の変位に対応して測定
バー本体(12)のツイータ支持部位(13)からの空
気流の漏れ量が変化し、背圧が予め設定された[しきい
値J (Po)迄低下したA点で接触信号が出力され
る。When measuring the dimensions of the workpiece (10), the tweeter (14)
When the measuring ball (11) attached to the tip of the measuring bar (11) comes into contact with the workpiece (10), airflow leaks from the tweeter support portion (13) of the measuring bar body (12) in response to the displacement of the tweeter (14). A contact signal is output at point A where the amount changes and the back pressure decreases to a preset threshold value J (Po).
斯くしてワーク(lO)の寸法もしくは幅中心が、圧縮
空気の漏れ量の変化を背圧の変化に変換せしめた接触信
号を介して高精度保持下に計測される。In this way, the dimension or width center of the workpiece (lO) is measured with high precision via a contact signal that converts a change in the amount of leakage of compressed air into a change in back pressure.
尚、第4図に例示する実施態様に於いては、背圧検出器
(40)として公知の圧力針が使用されているが、異な
れる実施態様として、圧力変化を電気信号に変換する圧
力変換器、例えばダイヤフラムの変位をリミットスイッ
チで検出するように構成された背圧検出装置等を使用す
ることも可能である。In the embodiment illustrated in FIG. 4, a known pressure needle is used as the back pressure detector (40), but in a different embodiment, a pressure converter that converts pressure changes into electrical signals is used. It is also possible to use a back pressure detection device configured to detect the displacement of a device, for example a diaphragm, using a limit switch.
血皿曵処果
以上の説明から理解し得る如く、本発明装置はその全体
構造が極めて簡易であり、且つ、測定条件が安定してい
るから長期間に亘って良好な測定精度を持続することが
できる。また電気信号の代わりに背圧の変化に起因する
接触信号を使用しているから、塵埃やワークの切り屑等
が介在している劣悪な計測環境下に於いても誤信号を発
信する虞れのない検知性能の良好な測定条件を確保する
ことができる。As can be understood from the above explanation, the device of the present invention has an extremely simple overall structure and stable measurement conditions, so it can maintain good measurement accuracy over a long period of time. Can be done. In addition, since contact signals caused by changes in back pressure are used instead of electrical signals, there is a risk of erroneous signals being transmitted even in poor measurement environments where dust or workpiece chips are present. It is possible to ensure good measurement conditions with no detection performance.
第1図は本発明に係る三輪接触検出器の部分縦断面図で
あり、第2図は圧空源と三輪接触検出器の間に形成され
る圧縮空気供給系のブロック線図である。また、第3図
はツイータの変位と背圧との関係を表示する直交座標線
図である、第4図および第5図は電気信号を利用する公
知の三輪接触検出器の測定原理の説明図である。
(10)・−ワーク、(11)・−・−測定球、(12
) −測定バー本体、(13)・−ツイータ支持部位、
(14)・・−ツイータ、(15)・−主軸、 (16
)・・−・測定バー、(17)−・−空気導入口、(1
8) −圧縮空気の流路、(19) −−−−−テーバ
状係合面、(20)・−・テーバ状座面、(21)−・
−加圧スプリング。
112MFIG. 1 is a partial vertical sectional view of a three-wheel contact detector according to the present invention, and FIG. 2 is a block diagram of a compressed air supply system formed between a compressed air source and the three-wheel contact detector. Furthermore, Fig. 3 is an orthogonal coordinate diagram showing the relationship between tweeter displacement and back pressure, and Figs. 4 and 5 are explanatory diagrams of the measurement principle of a known three-wheeled contact detector that uses electrical signals. It is. (10) - Workpiece, (11) - Measuring ball, (12
) - Measuring bar body, (13) - Tweeter support part,
(14)...-tweeter, (15)...-main axis, (16)
)...-Measurement bar, (17)--Air inlet, (1
8) - Compressed air flow path, (19) ---- Tapered engagement surface, (20) --- Tapered seating surface, (21) ---
-Pressure spring. 112M
Claims (2)
じて測定バー本体のフイーラ支持部位からの空気流の漏
れ量を変化せしめ、該空気流の漏れによるフイーラへの
背圧の変化を検出してワークと測定球との接触信号を出
力させることを特徴とするワーク計測方法。(1) The amount of airflow leaking from the filler support part of the measurement bar body is changed according to the displacement of the measurement ball for measuring the dimensions of the workpiece, and the change in back pressure to the filler due to the airflow leakage is suppressed. A workpiece measurement method characterized by detecting and outputting a contact signal between a workpiece and a measuring ball.
れるワーク計測用の測定バーに於いて、測定バー本体の
内部に空気導入口からフイーラ支持部位に向かって延び
る圧縮空気の流路を形成すると共に、前記測定バー本体
の先端にフイーラの基端部に設けられたテーパ状係合面
を支持するテーパ状座面を形成し、またフイーラのテー
パ状係合面を加圧スプリングによる付勢下に前記テーパ
状座面に対し軸線方向に沿って変位自在に対向配置して
三軸接触検出器を形成したことを特徴とするワーク計測
装置。(2) In a measurement bar for measuring a workpiece that is attached to the main shaft of a machine tool by an automatic tool changer, a compressed air flow path is formed inside the measurement bar body that extends from the air inlet toward the filler support area. At the same time, a tapered seat surface is formed at the tip of the measuring bar body to support a tapered engagement surface provided at the base end of the feeler, and the tapered engagement surface of the feeler is biased by a pressure spring. A workpiece measuring device characterized in that a three-axis contact detector is disposed below the tapered seating surface so as to be displaceable in the axial direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14205084A JPS6120802A (en) | 1984-07-09 | 1984-07-09 | Method and instrument for measuring work |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14205084A JPS6120802A (en) | 1984-07-09 | 1984-07-09 | Method and instrument for measuring work |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6120802A true JPS6120802A (en) | 1986-01-29 |
Family
ID=15306239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14205084A Pending JPS6120802A (en) | 1984-07-09 | 1984-07-09 | Method and instrument for measuring work |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6120802A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001208534A (en) * | 2000-01-28 | 2001-08-03 | Yamanashi Prefecture | Pneumatic probe sensor and precision measuring apparatus using the same |
JP2006284376A (en) * | 2005-03-31 | 2006-10-19 | Aisin Aw Co Ltd | Positioning device, air micro measuring device, and measuring method thereof |
JP2009133669A (en) * | 2007-11-29 | 2009-06-18 | Stk Technology Co Ltd | Positional deviation detection device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4826162A (en) * | 1971-08-09 | 1973-04-05 |
-
1984
- 1984-07-09 JP JP14205084A patent/JPS6120802A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4826162A (en) * | 1971-08-09 | 1973-04-05 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001208534A (en) * | 2000-01-28 | 2001-08-03 | Yamanashi Prefecture | Pneumatic probe sensor and precision measuring apparatus using the same |
JP2006284376A (en) * | 2005-03-31 | 2006-10-19 | Aisin Aw Co Ltd | Positioning device, air micro measuring device, and measuring method thereof |
JP2009133669A (en) * | 2007-11-29 | 2009-06-18 | Stk Technology Co Ltd | Positional deviation detection device |
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