JP2006255849A - Work detecting method and work detecting device - Google Patents

Work detecting method and work detecting device Download PDF

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JP2006255849A
JP2006255849A JP2005079018A JP2005079018A JP2006255849A JP 2006255849 A JP2006255849 A JP 2006255849A JP 2005079018 A JP2005079018 A JP 2005079018A JP 2005079018 A JP2005079018 A JP 2005079018A JP 2006255849 A JP2006255849 A JP 2006255849A
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workpiece
positioning
pressurized air
positioning pin
state
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JP4492405B2 (en
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Hiroshi Miyaoka
浩 宮岡
Masuo Morimoto
益男 森本
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/006—Arrangements for observing, indicating or measuring on machine tools for indicating the presence of a work or tool in its holder

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  • Mechanical Engineering (AREA)
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Abstract

<P>PROBLEM TO BE SOLVED: To detect a workpiece by a simple constitution by a simple method. <P>SOLUTION: Pressurized air is supplied into a cylinder chamber 1a, and in a state before the workpiece W is positioned, a positioning pin 3 is projected over a positioning tool base 1 located at the uppermost end. In this state, when the workpiece W composed of a panel material P and a nut N is positioned and set, and the workpiece W is pressed from above the nut N by a clamper 13, the positioning pin 3 is lowered to block an air blowout port 3e by a pin guide hole 1b, so that the pressure of the pressurized air is changed, whereby the presence/absence of the workpiece W is detected based upon such a pressure change. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、位置決めピンに位置決めセットしたワークを検知するワーク検知方法およびワーク検知装置に関する。   The present invention relates to a workpiece detection method and a workpiece detection device that detect a workpiece positioned and set on a positioning pin.

従来、位置決めピンに位置決めセットするワークを検知する方法および装置としては、例えば下記特許文献１に記載されたものがある。   Conventionally, as a method and apparatus for detecting a workpiece to be positioned and set on a positioning pin, for example, there is one described in Patent Document 1 below.

これは、位置決めピンを備えたワーク支持体にワークを位置決めセットするに際し、ワーク支持体を昇降させる昇降駆動用モータの制御に用いる信号をモニタリングし、制御用信号変動に基づいてワークの有無を検知している。
特開２００２−３６１６５号公報 This is because when a workpiece is positioned and set on a workpiece support provided with positioning pins, a signal used for controlling a lifting drive motor that raises and lowers the workpiece support is monitored, and the presence or absence of a workpiece is detected based on control signal fluctuations. is doing.
JP 2002-36165 A

しかしながら、上記した従来のワーク検知方法および装置にあっては、昇降駆動用モータのエンコーダで検出した回転量検出値とあらかじめ設定したマスターデータとを比較して、エンコーダからの信号によるフィードバック制御を行うもので、ワーク検知を行う際の制御回路が必要であり、検知方法の煩雑化および構成の複雑化を招いている。   However, in the above-described conventional workpiece detection method and apparatus, the rotation amount detection value detected by the encoder of the lifting drive motor is compared with preset master data, and feedback control is performed using a signal from the encoder. Therefore, a control circuit for performing workpiece detection is required, which complicates the detection method and complicates the configuration.

そこで、本発明は、簡単な方法および構成でワークの検知を行えるようにすることを目的としている。   Accordingly, an object of the present invention is to enable workpiece detection with a simple method and configuration.

本発明は、ワークを位置決めする位置決めピン内に加圧空気を供給し、この状態で前記位置決めピンに前記ワークを位置決めセットしたときに、前記位置決めピンの外周部に設けた空気吹き出し口から吹き出す前記加圧空気が遮られ、このときの前記加圧空気の状態変化を検知して前記ワークの有無を検知することを最も主要な特徴とする。   In the present invention, when pressurized air is supplied into a positioning pin for positioning a workpiece, and the workpiece is positioned and set in the positioning pin in this state, the air blown out from an air outlet provided in an outer peripheral portion of the positioning pin The main feature is that the pressurized air is blocked, and the presence or absence of the workpiece is detected by detecting a change in the state of the pressurized air at this time.

本発明によれば、位置決めピン内に供給する加圧空気の状態変化を検知してワークの有無を検知するようにしたので、エンコーダからの信号によるフィードバック制御を行うような制御回路が不要となり、簡単な方法および構成でワークの検知を行うことができる。   According to the present invention, since the presence / absence of the workpiece is detected by detecting the change in the state of the pressurized air supplied into the positioning pin, a control circuit for performing feedback control based on a signal from the encoder becomes unnecessary. The workpiece can be detected by a simple method and configuration.

以下、本発明の実施の形態を図面に基づき説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は、本発明の第１の実施形態を示すワーク検知装置の断面図で、図２は、図１に対してワークＷを位置決めセットした状態を示す。位置決め治具ベース１には、ワークＷを位置決めセットする位置決めピン３を、図中で上下方向に移動可能に設けている。ワークＷは、パネル材Ｐと、パネル材Ｐに溶接固定するナットＮとからなり、これら両部品を位置決めした状態で相互を溶接固定する。   FIG. 1 is a cross-sectional view of a workpiece detection device showing a first embodiment of the present invention, and FIG. 2 shows a state in which a workpiece W is positioned and set with respect to FIG. The positioning jig base 1 is provided with positioning pins 3 for positioning and setting the workpiece W so as to be movable in the vertical direction in the drawing. The workpiece W includes a panel material P and a nut N that is welded and fixed to the panel material P, and these two components are positioned and fixed to each other by welding.

位置決めピン３は、先端の小径部３ａと、基端の大径部３ｂと、大径部３ｂの下端に設けたピストン部３ｃとを、それぞれ備えている。ピストン部３ｃは、位置決めベース１内に形成したシリンダ室１ａ内に、図１中で上下方向に移動可能に収容してあり、大径部３ｂは、上記したシリンダ室１ａに連通して上部に開口するピンガイド孔１ｂ内に移動可能に挿入している。   The positioning pin 3 includes a distal end small diameter portion 3a, a proximal end large diameter portion 3b, and a piston portion 3c provided at a lower end of the large diameter portion 3b. The piston portion 3c is accommodated in a cylinder chamber 1a formed in the positioning base 1 so as to be movable in the vertical direction in FIG. 1, and the large-diameter portion 3b communicates with the cylinder chamber 1a described above. It is movably inserted into the open pin guide hole 1b.

シリンダ室１ａの図中で下部寄りの側部には、加圧空気供給通路５の一端を接続し、加圧空気供給通路５の他端を加圧空気供給手段としてのポンプ７に接続する。加圧空気供給通路５の途中には、ポンプ７から供給した加圧空気の状態として、例えば圧力を検知するワーク検知手段としての圧力スイッチ９を設けている。   One end of the pressurized air supply passage 5 is connected to the side of the cylinder chamber 1a closer to the lower part in the figure, and the other end of the pressurized air supply passage 5 is connected to a pump 7 as pressurized air supply means. In the middle of the pressurized air supply passage 5, as a state of the pressurized air supplied from the pump 7, for example, a pressure switch 9 is provided as a work detecting means for detecting pressure.

前記した位置決めベース１の上面には、ワークＷを位置決めピン３に位置決めセットする際にそのワークＷを受けるワーク受け１１を設けている。ワーク受け１１は、位置決めピン３が挿入されてその大径部３ｂより大径の貫通孔１１ａを備えている。   On the upper surface of the positioning base 1 is provided a workpiece receiver 11 that receives the workpiece W when the workpiece W is positioned and set on the positioning pin 3. The workpiece receiver 11 includes a through-hole 11a having a larger diameter than the large-diameter portion 3b into which the positioning pin 3 is inserted.

また、パネル材Ｐは、大径部３ｂより僅かに大径の貫通孔Ｐａを備え、ナットＮの位置決め孔としてのねじ穴Ｎａの内径は、大径部３ｂより小径でかつ小径部３ａより僅かに大径としている。   Further, the panel material P includes a through hole Pa slightly larger in diameter than the large diameter portion 3b, and the inner diameter of the screw hole Na as a positioning hole of the nut N is smaller than that of the large diameter portion 3b and slightly smaller than that of the small diameter portion 3a. It has a large diameter.

上記した位置決めピン３内には、シリンダ室１ａに図中で下端が開口する空気導入穴３ｄを設けてあり、大径部３ｂに空気吹き出し口３ｅを、小径部３ａに第２の空気吹き出し口３ｆを、それぞれ空気導入穴３ｄに連通した状態で円周方向に複数形成している。   In the positioning pin 3 described above, an air introduction hole 3d having a lower end opened in the drawing is provided in the cylinder chamber 1a. The air outlet 3e is provided in the large diameter portion 3b and the second air outlet is provided in the small diameter portion 3a. A plurality of 3f are formed in the circumferential direction in communication with the air introduction hole 3d.

大径部３ｂの空気吹き出し口３ｅは、図１に示すように、ピストン部３ｃがシリンダ室１ａ内の最上部に位置している状態で、ワーク受け１１の上面に対して、水平位置がほぼ同等となるとともに、図２に示すように、ワークＷを位置決めセットした状態で、位置決め治具ベース１のピンガイド孔１ｂに対応する位置となるよう設定している。     As shown in FIG. 1, the air outlet 3e of the large-diameter portion 3b has a substantially horizontal position with respect to the upper surface of the workpiece receiver 11 in a state where the piston portion 3c is located at the top of the cylinder chamber 1a. In addition, as shown in FIG. 2, the position is set so as to correspond to the pin guide hole 1 b of the positioning jig base 1 with the workpiece W positioned and set.

一方、小径部３ａの第２の空気吹き出し口３ｆは、図２に示すように、ワークＷを位置決めセットした状態で、ナットＮのねじ孔Ｎａ内面に対応する位置に設定している。       On the other hand, as shown in FIG. 2, the second air outlet 3f of the small diameter portion 3a is set at a position corresponding to the inner surface of the screw hole Na of the nut N in a state where the workpiece W is positioned and set.

次に作用を説明する。図１に示すように、ポンプ７からの加圧空気を、加圧空気供給通路５を経てシリンダ室１ａに供給することで、この加圧空気圧をピストン部３ｃが受けて、図１のように位置決めピン３が最上端位置に突出移動する。   Next, the operation will be described. As shown in FIG. 1, by supplying the pressurized air from the pump 7 to the cylinder chamber 1a through the pressurized air supply passage 5, the pressurized air pressure is received by the piston portion 3c, as shown in FIG. The positioning pin 3 projects and moves to the uppermost end position.

このとき、シリンダ室１ａ内の加圧空気は、空気導入穴３ｄに入り込み、大径部３ｂの空気吹き出し口３ｅから吹き出し、ワーク受け１１上に、例えばワークＷの搬出時に落下した異物などを吹き飛ばして除去する。これにより、その後のワークＷの位置決めセットを確実に行える。また、小径部３ａの第２の空気吹き出し口３ｆからも空気を吹き出している。   At this time, the pressurized air in the cylinder chamber 1a enters the air introduction hole 3d, blows out from the air outlet 3e of the large-diameter portion 3b, and blows off, for example, foreign matter dropped on the workpiece receiver 11 when the workpiece W is carried out. To remove. Thereby, the positioning set of the workpiece | work W after that can be performed reliably. Air is also blown out from the second air blowing port 3f of the small diameter portion 3a.

次に、図１の状態で、図２に示すようにワークＷを位置決めピン１に位置決めセットする。このとき、パネル材Ｐは、その貫通孔Ｐａ内に大径部３ｂの上端部付近を挿入してワーク受け１１上に載置するとともに、大径部３ｂより小径のねじ穴Ｎａを有するナットＮは、下端が大径部３ｂと小径部３ａとの間の傾斜部３ｇに当接する（この当接初期の段階では、位置決めピン３は、まだ図１に示すような最上端位置にある）。   Next, in the state of FIG. 1, the workpiece W is positioned and set on the positioning pin 1 as shown in FIG. 2. At this time, the panel material P is inserted in the through-hole Pa near the upper end portion of the large-diameter portion 3b and placed on the work receiver 11, and a nut N having a screw hole Na smaller in diameter than the large-diameter portion 3b. Is in contact with the inclined portion 3g between the large-diameter portion 3b and the small-diameter portion 3a (in this initial stage of contact, the positioning pin 3 is still in the uppermost position as shown in FIG. 1).

そして、このナットＮを、先端部分が中空のクランパ１３によって位置決めピン３とともに押し下げ、さらにパネル材Ｐに接触させて押し付け、この押し付け状態（図２に示す状態）でナットＮとパネル材Ｐとを溶接固定する。   Then, the nut N is pushed down together with the positioning pin 3 by the clamper 13 having a hollow tip, and further pressed against the panel material P. In this pressed state (the state shown in FIG. 2), the nut N and the panel material P are pressed. Fix by welding.

図２のように、クランパ１３によりナットＮをパネル材Ｐに押し付けた状態では、空気吹き出し口３ｅがピンガイド１ｂに対応する位置にあって、加圧空気がピンガイド１ｂに遮られた状態となる。   As shown in FIG. 2, when the nut N is pressed against the panel material P by the clamper 13, the air outlet 3e is at a position corresponding to the pin guide 1b and the pressurized air is blocked by the pin guide 1b. Become.

このため、ポンプ７から吐出する加圧空気の圧力が変化（上昇）し、この圧力変化を、加圧空気供給通路５の途中に設けた圧力スイッチ９が検知し、これによりワークＷを位置決めピン３に位置決めセットした状態を検知することができる。     For this reason, the pressure of the pressurized air discharged from the pump 7 changes (increases), and this pressure change is detected by the pressure switch 9 provided in the middle of the pressurized air supply passage 5, whereby the workpiece W is positioned by the positioning pin. 3 can be detected.

また、このとき空気吹き出し口３ｅは、ピンガイド孔１ｂによって完全に密閉されるわけではなく、僅かの隙間から空気を吹き出しており、これにより、ピンガイド孔１ｂ内の異物などを外部へ吹き飛ばすことができる。この結果、位置決めピン３のピンガイド孔１ｂに対する噛み込みなどの動作不良を防止することができる。   Further, at this time, the air outlet 3e is not completely sealed by the pin guide hole 1b, but air is blown out from a slight gap, thereby blowing off foreign matter in the pin guide hole 1b to the outside. Can do. As a result, malfunction such as biting of the positioning pin 3 into the pin guide hole 1b can be prevented.

さらに、図２のように、クランパ１３によりナットＮをパネル材Ｐに押し付けた状態では、小径部３ａの第２の空気吹き出し口３ｆがナットＮのねじ孔Ｎａに対応する位置にあり、この状態で第２の空気吹き出し口３ｆから空気を吹き出すことで、ナットＮのねじ孔Ｎａ内に侵入する異物を外部へ吹き飛ばし除去することができる。   Further, as shown in FIG. 2, when the nut N is pressed against the panel material P by the clamper 13, the second air outlet 3f of the small diameter portion 3a is in a position corresponding to the screw hole Na of the nut N. By blowing out air from the second air outlet 3f, foreign matter that enters the screw hole Na of the nut N can be blown out and removed.

上記したように、本発明の第１の実施形態によれば、位置決めピン３内に供給する加圧空気の圧力変化を検知してワークＷの有無を検知するようにしたので、エンコーダからの信号によるフィードバック制御を行うような制御回路が不要となり、簡単な方法および構成でワークＷの検知を行うことができる。   As described above, according to the first embodiment of the present invention, since the pressure change of the pressurized air supplied into the positioning pin 3 is detected to detect the presence or absence of the workpiece W, the signal from the encoder Therefore, the control circuit for performing the feedback control according to the above is unnecessary, and the workpiece W can be detected with a simple method and configuration.

また、加工部近傍すなわちナットＮとパネル材Ｐとの接合部近傍に、ワーク検出用のセンサなどを設置する必要がないので、センサやその配線の破損による設備停止を回避することができる。さらに、加圧空気により位置決めピン３を支持する構成としているため、例えば加圧空気に代えてスプリングを使用した場合のようなスプリングのへたりにより位置決めピン３が正規の位置に戻らなくなるような不具合も防止することができ、長期間安定した位置決め作業を行うことができる。   Moreover, since it is not necessary to install a workpiece detection sensor or the like in the vicinity of the processing portion, that is, in the vicinity of the joint portion between the nut N and the panel material P, it is possible to avoid equipment stoppage due to damage to the sensor or its wiring. Furthermore, since the positioning pin 3 is supported by pressurized air, the positioning pin 3 cannot be returned to the normal position due to the spring sag, for example, when a spring is used instead of the pressurized air. Can be prevented, and a stable positioning operation can be performed for a long time.

図３は、本発明の第２の実施形態を示すワーク検知装置の断面図で、（ａ）がワークＷの位置決めセット前の状態、（ｂ）が同セット後の状態である。この実施形態は、位置決めピン１５の下部に突出する取り付け軸部１５ａを、位置決めベース１７の取付孔１７ａに挿入し、その反対側から固定用ナット１９を、取り付け軸部１５ａ先端のねじ部１５ｂに螺合させて固定している。   FIGS. 3A and 3B are cross-sectional views of the workpiece detection device showing the second embodiment of the present invention, in which FIG. 3A shows a state before the positioning setting of the workpiece W, and FIG. 3B shows a state after the setting. In this embodiment, the mounting shaft portion 15a protruding from the lower portion of the positioning pin 15 is inserted into the mounting hole 17a of the positioning base 17, and the fixing nut 19 is inserted into the screw portion 15b at the tip of the mounting shaft portion 15a from the opposite side. It is fixed by screwing.

位置決めベース１７上には、第１の実施形態と同様に、ワーク受け２１を設けている。ワーク受け２１は、位置決めピン１５の外径より大きい貫通孔２１ａを備えている。また、ワークＷのパネル材Ｐに形成した位置決め孔としての貫通孔Ｐａは、内径が位置決めピン１５の外径より僅かに大きく、位置決めピン１５を貫通孔Ｐａに挿入した状態でほぼ接触した状態となる。   A workpiece receiver 21 is provided on the positioning base 17 as in the first embodiment. The workpiece receiver 21 includes a through hole 21 a that is larger than the outer diameter of the positioning pin 15. In addition, the through hole Pa as a positioning hole formed in the panel material P of the workpiece W has an inner diameter slightly larger than the outer diameter of the positioning pin 15 and is in a substantially contacted state with the positioning pin 15 inserted into the through hole Pa. Become.

そして、この実施形態においても、位置決めピン１５内には、空気導入穴１５ｃを形成し、空気導入穴１５ｃには、ここでは特に図示していないが、前記図１に示したものと同様な空気供給通路５の一端を接続し、その途中に圧力スイッチ９を設けるとともに、他端にポンプ７を接続する。     Also in this embodiment, an air introduction hole 15c is formed in the positioning pin 15, and the air introduction hole 15c is not shown here but is similar to the air shown in FIG. One end of the supply passage 5 is connected, a pressure switch 9 is provided in the middle, and a pump 7 is connected to the other end.

また、位置決めピン１５には、空気吹き出し口１５ｄを設け、この空気吹き出し口１５ｄは、図３（ａ）に示すように、ワーク受け２１の上面付近に対して、水平位置がほぼ同等となるとともに、図３（ｂ）に示すように、パネル材Ｐを位置決めセットした状態で、その貫通孔Ｐａの内面に対応した状態となるように設定している。   Further, the positioning pin 15 is provided with an air blowing port 15d, and the air blowing port 15d has a substantially equal horizontal position with respect to the vicinity of the upper surface of the work receiver 21, as shown in FIG. As shown in FIG. 3B, the panel material P is set to be in a state corresponding to the inner surface of the through hole Pa in a state where the panel material P is positioned and set.

なお、図３（ｂ）では、パネル材Ｐの上に載置する、前記図２に示したナットＮは省略している。   In FIG. 3B, the nut N shown in FIG. 2 placed on the panel material P is omitted.

次に作用を説明する。図３（ａ）に示すように、ポンプ７からの加圧空気を、加圧空気供給通路５を経て空気導入穴１５ｃに供給することで、空気吹き出し口１５ｄから空気が吹き出し、ワーク受け２１上に、例えばワークＷの搬出時に落下した異物などを吹き飛ばして除去する。これにより、その後のワークＷの位置決めセットを確実に行える。   Next, the operation will be described. As shown in FIG. 3 (a), by supplying the pressurized air from the pump 7 to the air introduction hole 15c through the pressurized air supply passage 5, the air is blown out from the air blowing port 15d, and on the workpiece receiver 21. In addition, for example, foreign matters dropped when the workpiece W is carried out are blown off and removed. Thereby, the positioning set of the workpiece | work W after that can be performed reliably.

この状態でパネル材Ｐを、図３（ｂ）のように、その貫通孔Ｐａに位置決めピン１５を挿入しつつワーク受け２１上に載置すると、空気吹き出し口１５ｄが、パネル材Ｐの貫通孔Ｐａに対応する位置となって、空気吹き出し口１５ｄから吹き出す加圧空気が遮られた状態となる。   In this state, as shown in FIG. 3B, when the panel material P is placed on the workpiece receiver 21 with the positioning pins 15 being inserted into the through holes Pa, the air outlets 15d become the through holes of the panel material P. At a position corresponding to Pa, the pressurized air blown from the air blowing port 15d is blocked.

このため、ポンプ７から吐出する加圧空気の圧力が変化（上昇）し、この圧力変化を、加圧空気供給通路５の途中に設けた圧力スイッチ９が検知し、これによりワークＷであるパネル材Ｐを位置決めピン１５に位置決めセットした状態を検知することができる。     For this reason, the pressure of the pressurized air discharged from the pump 7 changes (increases), and this pressure change is detected by the pressure switch 9 provided in the middle of the pressurized air supply passage 5, and thereby the panel which is the workpiece W The state where the material P is positioned and set on the positioning pin 15 can be detected.

上記したように、本発明の第２の実施形態によれば、位置決めピン１５内に供給する加圧空気の圧力変化を検知してワークＷの有無を検知するようにしたので、エンコーダからの信号によるフィードバック制御を行うような制御回路が不要となり、簡単な方法および構成でワークＷの検知を行うことができる。   As described above, according to the second embodiment of the present invention, since the pressure change of the pressurized air supplied into the positioning pin 15 is detected to detect the presence or absence of the workpiece W, the signal from the encoder Therefore, the control circuit for performing the feedback control according to the above is unnecessary, and the workpiece W can be detected with a simple method and configuration.

また、加工部近傍すなわち図示しないナットＮとパネル材Ｐとの接合部近傍に、ワーク検出用のセンサなどを設置する必要がないので、センサやその配線の破損による設備停止を回避することができる。     In addition, since it is not necessary to install a sensor for detecting a workpiece in the vicinity of the processing portion, that is, in the vicinity of the joint portion between the nut N and the panel material P (not shown), it is possible to avoid equipment stoppage due to damage to the sensor or its wiring. .

なお、上記した各実施形態において、加圧空気の圧力を検知する代わりに、加圧空気の流量を検知するようにしても、同様の効果を得ることができる。     In each of the above-described embodiments, the same effect can be obtained by detecting the flow rate of the pressurized air instead of detecting the pressure of the pressurized air.

本発明の第１の実施形態を示すワーク検知装置の断面図である。It is sectional drawing of the workpiece | work detection apparatus which shows the 1st Embodiment of this invention. 図１に対してワークを位置決めセットした状態を示す断面図である。FIG. 2 is a cross-sectional view showing a state in which a workpiece is positioned and set with respect to FIG. 本発明の第２の実施形態を示すワーク検知装置の断面図で、（ａ）がワークＷの位置決めセット前の状態、（ｂ）が同セット後の状態である。It is sectional drawing of the workpiece | work detection apparatus which shows the 2nd Embodiment of this invention, (a) is the state before the positioning set of the workpiece | work W, (b) is the state after the set.

符号の説明Explanation of symbols

Ｗ ワーク
Ｐ パネル材（ワーク）
Ｐａ パネル材の貫通孔（ワークの位置決め孔）
Ｎ ナット（ワーク）
Ｎａ ナットの貫通孔（ワークの位置決め孔）
１，１７ 位置決め治具ベース
１ｂ ピンガイド孔
３，１５ 位置決めピン
３ｅ，１５ｄ 空気吹き出し口
３ｆ 第２の空気吹き出し口
７ ポンプ（加圧空気供給手段）
９ 圧力スイッチ（ワーク検知手段） W Work P Panel material (work)
Pa Panel material through hole (work positioning hole)
N Nut (work)
Na nut through hole (work positioning hole)
1,17 Positioning jig base 1b Pin guide hole 3,15 Positioning pin 3e, 15d Air outlet 3f Second air outlet
7 Pump (Pressurized air supply means)
9 Pressure switch (work detection means)

Claims (13)

ワークを位置決めする位置決めピン内に加圧空気を供給し、この状態で前記位置決めピンに前記ワークを位置決めセットしたときに、前記位置決めピンの外周部に設けた空気吹き出し口から吹き出す前記加圧空気が遮られ、このときの前記加圧空気の状態変化を検知して前記ワークの有無を検知することを特徴とするワーク検知方法。   When pressurized air is supplied into a positioning pin for positioning a workpiece, and the workpiece is positioned and set in the positioning pin in this state, the pressurized air blown out from an air outlet provided on the outer peripheral portion of the positioning pin is A workpiece detection method, wherein the presence or absence of the workpiece is detected by detecting a change in state of the pressurized air at this time. 前記加圧空気の状態変化は、加圧空気の圧力変化であることを特徴とする請求項１に記載のワーク検知方法。   The workpiece detection method according to claim 1, wherein the change in state of the pressurized air is a change in pressure of the pressurized air. 前記加圧空気の状態変化は、加圧空気の流量変化であることを特徴とする請求項１に記載のワーク検知方法。   The workpiece detection method according to claim 1, wherein the change in the state of the pressurized air is a change in the flow rate of the pressurized air. 前記位置決めピンは、前記加圧空気の供給を受けて位置決め治具ベースに対して突出移動し、この突出した状態から前記ワークの位置決めセットにより、このワークに押されて前記位置決め治具ベースに対して後退移動し、この後退移動した状態で、前記位置決めピンの外周部の前記空気吹き出し口が、前記位置決めピンを移動可能にガイドする前記位置決め治具ベースのピンガイド孔に対応した位置となって、前記空気吹き出し口から吹き出す前記加圧空気が遮られることを特徴とする請求項１ないし３のいずれか１項に記載のワーク検知方法。   The positioning pin protrudes and moves with respect to the positioning jig base upon receiving the supply of the pressurized air, and is pushed against the positioning jig base by the workpiece positioning set from the protruding state. In this retreated state, the air outlet on the outer periphery of the positioning pin is in a position corresponding to the pin guide hole of the positioning jig base that guides the positioning pin to be movable. The workpiece detection method according to claim 1, wherein the pressurized air blown out from the air outlet is blocked. 前記位置決め治具ベースのピンガイド孔に対応した位置となった状態の前記空気吹き出し口から、前記位置決めピンと前記ピンガイド孔との間の隙間に空気を流すことを特徴とする請求項４に記載のワーク検知方法。   5. The air according to claim 4, wherein air is allowed to flow from the air outlet in a state corresponding to the pin guide hole of the positioning jig base to a gap between the positioning pin and the pin guide hole. Workpiece detection method. 前記位置決めピンが、前記加圧空気の供給を受けて前記位置決め治具ベースに対して突出移動した状態で、前記空気吹き出し口から、前記位置決めセット状態のワークを受けるワーク受け上に空気を吹き出すことを特徴とする請求項４に記載のワーク検知方法。   The positioning pin blows air from the air outlet onto the workpiece receiver that receives the workpiece in the positioning set state in a state where the positioning pin protrudes and moves relative to the positioning jig base upon receiving the pressurized air. The work detection method according to claim 4. 前記位置決めピンが、前記ワークに押されて前記位置決め治具ベースに対して後退移動した状態で、前記位置決めピンに設けた第２の空気吹き出し口から、前記位置決めピンが挿入される前記ワークの位置決め孔内面に向けて前記加圧空気を吹き出すことを特徴とする請求項４または５に記載のワーク検知方法。   Positioning of the workpiece in which the positioning pin is inserted from a second air outlet provided in the positioning pin in a state where the positioning pin is pushed by the workpiece and moved backward with respect to the positioning jig base. The work detection method according to claim 4, wherein the pressurized air is blown out toward an inner surface of the hole. 前記位置決めピンを、位置決め治具ベースに固定し、この位置決めピンに前記ワークを位置決めセットしたときに、前記位置決めピンの外周部の前記空気吹き出し口が、前記位置決めピンが挿入される前記ワークの位置決め孔に対応した位置となって、前記空気吹き出し口から吹き出す前記加圧空気が遮られることを特徴とする請求項１ないし３のいずれか１項に記載のワーク検知方法。   When the positioning pin is fixed to a positioning jig base and the workpiece is positioned and set on the positioning pin, the air outlet on the outer peripheral portion of the positioning pin is positioned on the workpiece into which the positioning pin is inserted. The work detection method according to any one of claims 1 to 3, wherein the pressurized air blown out from the air blowing port is blocked at a position corresponding to a hole. ワークを位置決めする位置決めピンと、この位置決めピン内に加圧空気を供給する加圧空気供給手段と、前記位置決めピンに前記ワークを位置決めセットしかつ、前記加圧空気供給手段により加圧空気を前記位置決めピン内に供給したときに、前記位置決めピンの外周部に設けた空気吹き出し口から吹き出す前記加圧空気が遮られ、このときの前記加圧空気の状態変化を検知して前記ワークの有無を検知するワーク検知手段とを、それぞれ有することを特徴とするワーク検知装置。   Positioning pins for positioning the workpiece, pressurized air supply means for supplying pressurized air into the positioning pins, positioning the workpiece on the positioning pins, and positioning the pressurized air by the pressurized air supply means When supplied into the pin, the pressurized air blown out from the air outlet provided in the outer peripheral portion of the positioning pin is blocked, and the presence of the workpiece is detected by detecting the change in the state of the pressurized air at this time And a workpiece detection means. 前記加圧空気の状態変化は、加圧空気の圧力変化であることを特徴とする請求項９に記載のワーク検知装置。   The workpiece detection apparatus according to claim 9, wherein the change in the state of the pressurized air is a change in the pressure of the pressurized air. 前記加圧空気の状態変化は、加圧空気の流量変化であることを特徴とする請求項９に記載のワーク検知装置。   The workpiece detection apparatus according to claim 9, wherein the change in the state of the pressurized air is a change in the flow rate of the pressurized air. 前記位置決めピンは、前記加圧空気の供給を受けて位置決め治具ベースに対して突出移動するとともに、この突出した状態から前記ワークの位置決めセットにより、このワークに押されて前記位置決め治具ベースに対して後退移動し、前記位置決めピンが、前記ワークに押されて後退移動してワークセット状態となったときに、前記位置決めピンの外周部の前記空気吹き出し口が、前記位置決め治具ベースに対応した位置となって、前記空気吹き出し口から吹き出す前記加圧空気が遮られることを特徴とする請求項９ないし１１のいずれか１項に記載のワーク検知装置。 The positioning pin protrudes and moves relative to the positioning jig base upon receiving the pressurized air, and is pushed by the workpiece by the positioning set of the workpiece from the protruding state to the positioning jig base. When the positioning pin is pushed back by the workpiece and moved back into the workpiece set state, the air outlet on the outer periphery of the positioning pin corresponds to the positioning jig base. The workpiece detection device according to claim 9, wherein the pressurized air blown out from the air outlet is blocked at the position where the air is discharged. 前記位置決めピンを、位置決め治具ベースに固定し、この位置決めピンに前記ワークを位置決めセットしたときに、前記位置決めピンの外周部の前記空気吹き出し口が、前記位置決めピンが挿入される前記ワークの位置決め孔に対応した位置となって、前記空気吹き出し口から吹き出す前記加圧空気が遮られることを特徴とする請求項９ないし１１のいずれか１項に記載のワーク検知装置。   When the positioning pin is fixed to a positioning jig base and the workpiece is positioned and set on the positioning pin, the air outlet on the outer peripheral portion of the positioning pin is positioned on the workpiece into which the positioning pin is inserted. The workpiece detection device according to claim 9, wherein the pressurized air blown out from the air blowing port is blocked at a position corresponding to a hole.
JP2005079018A 2005-03-18 2005-03-18 Work detection method Expired - Fee Related JP4492405B2 (en)

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JP2009274793A (en) * 2008-05-13 2009-11-26 Toyota Motor Corp Position detecting device and method
JP2016221608A (en) * 2015-05-28 2016-12-28 カナエ工業株式会社 Work holding device

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JP2009274793A (en) * 2008-05-13 2009-11-26 Toyota Motor Corp Position detecting device and method
JP2016221608A (en) * 2015-05-28 2016-12-28 カナエ工業株式会社 Work holding device

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