JPH055532Y2 - - Google Patents
Info
- Publication number
- JPH055532Y2 JPH055532Y2 JP1986056037U JP5603786U JPH055532Y2 JP H055532 Y2 JPH055532 Y2 JP H055532Y2 JP 1986056037 U JP1986056037 U JP 1986056037U JP 5603786 U JP5603786 U JP 5603786U JP H055532 Y2 JPH055532 Y2 JP H055532Y2
- Authority
- JP
- Japan
- Prior art keywords
- variable slit
- opening
- contact
- variable
- reference position
- 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.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 claims description 31
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
本考案は、光学測定器等に装着される可変スリ
ツト部の可変スリツト刃を開閉することにより、
この可変スリツト刃の開口幅を可変させて予め設
定された開口幅をなす基準位置となつたときに、
これを検出する可変スリツト基準位置検出機構に
関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention enables the variable slit blade of the variable slit section attached to an optical measuring instrument to be opened and closed.
When the aperture width of this variable slit blade is varied and reaches a reference position with a preset aperture width,
This invention relates to a variable slit reference position detection mechanism that detects this.
［従来技術］
従来の可変スリツト基準位置検出機構（以下、
検出機構という）の原理図を第３図に示す。[Prior art] Conventional variable slit reference position detection mechanism (hereinafter referred to as
A diagram of the principle of the detection mechanism (referred to as the detection mechanism) is shown in FIG.
この検出機構１は、ブロツク２，２上に並設さ
れた左右の可変スリツト刃３，３と、該可変スリ
ツト刃３，３の下部にその一部が当接して設けら
れた左右の送りナツト４，４と、該送りナツト
４，４に螺合し、かつ貫通して設けられ、該送り
ナツト４，４を相対する方向に移動するための送
りネジ軸５と、該送りネジ軸５に軸接手６を介し
て取付けられたモータ（ステツピングモータ）７
と、前記軸接手６とモータ７との間の送りネジ軸
５に固設された小径ギヤ８と、該小径ギヤ８に歯
合して設けられた大径ギヤ９と、該大径９の中心
に貫通して設けられた軸１０と、該軸１０の端部
に固設されたホイール１１と、該ホイール１１の
所定位置に取付けられた磁石１２（磁気リミツト
スイツチ１４）と、該磁石１２と対向して検出機
構１本体に設けられたセンサ１３（磁気リミツト
スイツチ１４）とによつて構成されている。 This detection mechanism 1 consists of left and right variable slit blades 3, 3 arranged in parallel on blocks 2, 2, and left and right feed nuts provided with a portion of the variable slit blades 3, 3 in contact with the lower part of the variable slit blades 3, 3. 4, 4, a feed screw shaft 5 which is screwed into and penetrates the feed nuts 4, 4 and is provided to move the feed nuts 4, 4 in opposite directions; Motor (stepping motor) 7 attached via shaft joint 6
a small diameter gear 8 fixed to the feed screw shaft 5 between the shaft joint 6 and the motor 7; a large diameter gear 9 provided in mesh with the small diameter gear 8; A shaft 10 provided through the center, a wheel 11 fixed to the end of the shaft 10, a magnet 12 (magnetic limit switch 14) attached to a predetermined position of the wheel 11, and the magnet 12. The sensor 13 (magnetic limit switch 14) is provided on the main body of the detection mechanism 1 to face each other.
次に、上記のように構成される従来の検出機構
１の動作について説明する。 Next, the operation of the conventional detection mechanism 1 configured as described above will be explained.
なお、ここで基準位置とは可変スリツト刃３，
３が開閉した際に予め設定される可変スリツト刄
３，３の開口幅に達したときの位置をいう。 Note that the reference position here is the variable slit blade 3,
This refers to the position when the preset opening width of the variable slits 3, 3 is reached when the variable slits 3 are opened and closed.
まず、予め基準位置となるように可変スリツト
刃３，３の開口幅を設定するとともに、ホイー
ル１１上の磁石１２がセンサー１３面に一致、つ
まり磁気リミツトスイツチ１４が閉状態となるよ
うにしておく。そして、これ以降はこの基準位置
を中心として可変スリツト刃３，３の開閉が行な
われる。 First, the opening width of the variable slit blades 3, 3 is set in advance so as to be at the reference position, and the magnet 12 on the wheel 11 is aligned with the surface of the sensor 13, that is, the magnetic limit switch 14 is in the closed state. From then on, the variable slit blades 3, 3 are opened and closed centered around this reference position.
次に、現在設定されている可変スリツト刃の開
口幅を変更する場合を例にとつてその具体的な動
作を説明すると、まず、モータ７の駆動により送
りネジ軸５を矢印Ａ方向に回転させる。これによ
り、左右の送りナツト４，４が内方向へ移動し可
変スリツト刃３，３が閉じていく。これと同時に
前記送りネジ軸５の回転力は直接小径ギヤ８に伝
達され、さらにこの小径ギヤ８、大径ギヤ９、軸
１０を経てホイール１１に伝達される。そして、
このホイール１１は該ホイール１１上の磁石１２
がセンサ１３面と一致するまで回転する。そし
て、可変スリツト刃３，３の開口幅が予め設定
した開口幅となり基準位置に達すると、磁気リミ
ツトスイツチ１４が閉状態となり可変スリツト刃
３，３の基準位置が検出される。 Next, the specific operation will be explained by taking as an example the case where the currently set opening width of the variable slit blade is changed. First, the feed screw shaft 5 is rotated in the direction of arrow A by the drive of the motor 7. . As a result, the left and right feed nuts 4, 4 move inward, and the variable slit blades 3, 3 close. At the same time, the rotational force of the feed screw shaft 5 is directly transmitted to the small diameter gear 8, and further transmitted to the wheel 11 via the small diameter gear 8, the large diameter gear 9, and the shaft 10. and,
This wheel 11 has a magnet 12 on it.
rotate until it matches the sensor 13 surface. When the opening width of the variable slit blades 3, 3 reaches the preset opening width and reaches the reference position, the magnetic limit switch 14 is closed and the reference position of the variable slit blades 3, 3 is detected.
上記のように基準位置が検出されると、続い
て、モータ７の駆動によつて送りネジ軸５が矢印
Ｂ方向に逆転される。すると、送りネジ軸５に螺
合している左右の送りナツト４，４は外方向に移
動し、可変スリツト刃３，３が変更後の開口幅ま
で開かれる。また、これと同時に送りネジ軸５の
回転力は小径ギヤ８、大径ギヤ９、軸１０を経て
ホイール１１に伝達される。そして、このホイー
ル１１の回転により該ホイール１１上の磁石１２
がセンサ１３面から離れ磁気リミツトスイツチ１
４が解除され開状態となる。 When the reference position is detected as described above, the feed screw shaft 5 is subsequently reversed in the direction of arrow B by the drive of the motor 7. Then, the left and right feed nuts 4, 4 screwed onto the feed screw shaft 5 move outward, and the variable slit blades 3, 3 are opened to the changed opening width. At the same time, the rotational force of the feed screw shaft 5 is transmitted to the wheel 11 via the small diameter gear 8, the large diameter gear 9, and the shaft 10. As the wheel 11 rotates, the magnet 12 on the wheel 11 is rotated.
is away from the sensor 13 surface and the magnetic limit switch 1
4 is released and becomes open.
［考案が解決しようとする問題点］
ところが、上述した従来の検出機構１において
は、送りネジ軸５を回転駆動するためのモータ７
及び可変スリツト刃３，３の基準位置を検出する
ための磁気リミツトスイツチ１４は高性能である
が可変スリツト刃３，３の基準位置を検出する
際、送りナツト４，４、小径ギヤ８、大径ギヤ
９、ホイール１１の各機構部を経るため、機械的
接点が多く、長年使用するとこれら送りナツト
４，４、小径ギヤ８、大径ギヤ９、ホイール１１
の各部に機械的摩耗が生じ基準位置がずれてしま
い検出誤差を招くという問題点があつた。[Problems to be solved by the invention] However, in the conventional detection mechanism 1 described above, the motor 7 for rotationally driving the feed screw shaft 5 is
The magnetic limit switch 14 for detecting the reference position of the variable slit blades 3, 3 has high performance, but when detecting the reference position of the variable slit blades 3, 3, the feed nuts 4, 4, small diameter gear 8, large diameter Since it passes through each mechanical part of gear 9 and wheel 11, there are many mechanical contact points, and after many years of use, these feed nuts 4, 4, small diameter gear 8, large diameter gear 9, and wheel 11
There was a problem in that mechanical wear occurred in various parts of the sensor, causing the reference position to shift, resulting in detection errors.
また、上記検出機構１は部品点数が多く、組立
調整が面倒であるとともに、取付面積を要すると
いう不具合があつた。 Further, the detection mechanism 1 has a large number of parts, which makes assembly and adjustment troublesome, and requires a large installation area.
そこで本考案は上記の点に鑑みなされたもので
あつて、その目的は、部品点数及び組立調整を減
少させコストの低減化を図るとともに、取付面積
を要することなく、さらに、摩耗によつて影響を
受ける個所を減少させることにより精度良く可変
スリツト刃の基準位置の検出を行なうことのでき
る可変スリツト基準位置検出機構を提供すること
にある。 Therefore, the present invention was developed in view of the above points, and its purpose is to reduce the number of parts and assembly adjustments to reduce costs, eliminate the need for installation area, and further reduce the impact of wear. It is an object of the present invention to provide a variable slit reference position detection mechanism capable of accurately detecting the reference position of a variable slit blade by reducing the number of locations affected by the variable slit blade.
上記の目的を達成するために、本考案に係る可
変スリツト基準位置検出機構は、
対向壁面間に開口幅を調整自在としてスリツト
状の開口が貫通して形成された２枚の可変スリツ
ト刃３，３が設けられた可変スリツト部１６と、
前記２枚の可変スリツト刃３，３の各々の所定
対向位置に固設されたプラス接点２０ｂ及びマイ
ナス接点２０ａからなり、前記開口の幅が所定幅
となつたときに互いに当接して接点を閉じる接点
と、
前記プラス接点２０ｂ及びマイナス接点２０ａ
の少なくとも一方に取り付けられ、該少なくとも
一方の接点を、該接点が固設された可変スリツト
刃の対向壁面位置から前記開口の幅方向に移動調
整可能とした微調整用ネジ２２と、
前記可変スリツト刃を開閉する開閉手段１７
と、
前記可変スリツト刃を所望の開口幅に設定する
ための設定手段２４と、
前記開閉手段１７を制御するとともに、前記接
点が閉じて導通したときに前記可変スリツト刃が
予め設定された開口幅をなす基準位置に位置した
ことを検出する可変スリツト部制御・検出手段２
３とからなる制御部と、
を具備したことを特徴としている。
In order to achieve the above object, the variable slit reference position detection mechanism according to the present invention includes two variable slit blades 3, each of which has a slit-shaped opening penetrating therethrough, the opening width of which can be freely adjusted between opposing wall surfaces; 3, and a positive contact 20b and a negative contact 20a fixed at predetermined opposing positions of each of the two variable slit blades 3, 3, and the width of the opening is a predetermined width. Contacts that come into contact with each other and close the contacts when worn out, and the positive contact 20b and the negative contact 20a.
a fine adjustment screw 22 that is attached to at least one of the variable slits and is capable of moving and adjusting the at least one contact point in the width direction of the opening from a position on the opposite wall surface of the variable slit blade to which the contact point is fixed; Opening/closing means 17 for opening/closing the blade
and a setting means 24 for setting the variable slit blade to a desired opening width; and controlling the opening/closing means 17 and controlling the variable slit blade to a preset opening width when the contact is closed and conductive. Variable slit portion control/detection means 2 for detecting that the variable slit portion is located at the reference position forming the
The present invention is characterized by comprising a control section consisting of 3 and 3.
まず、２枚の可変スリツト刃３，３の対向壁面
間のスリツト状の開口幅を基準位置の開口幅Ｌに
設定するとともに、微調整用ネジ２２を螺回して
接点が導通するように移動調整し固定する。
First, set the slit-shaped opening width between the opposing walls of the two variable slit blades 3, 3 to the opening width L at the reference position, and adjust the movement by turning the fine adjustment screw 22 so that the contact points are conductive. and fix it.
以降は、制御部により開閉手段を制御して可変
スリツト刃を開閉し、前記接点を一旦導通させ基
準位置が可変スリツト部制御・検出手段によつて
検出された後、設定手段に設定した任意の開口幅
となるよう可変スリツト刃が移動し設定される。 Thereafter, the control section controls the opening/closing means to open and close the variable slit blade, and once the contacts are made conductive, the reference position is detected by the variable slit section control/detection means, and then the arbitrary position set in the setting means is set. The variable slit blade is moved and set to match the opening width.
［実施例］
以下、本考案の一実施例を図面に基いて説明す
る。[Example] Hereinafter, an example of the present invention will be described based on the drawings.
第１図ａは、本考案の要部である可変スリツト
部を示す図、第１図ｂは、本考案の検出機構（可
変スリツト基準位置検出機構）の一実施例を示す
ブロツク図である。第１図ｂにおいて、検出機構
１５は、可変スリツト部１６、開閉手段１７、制
御部１８によつて概略構成されている。 FIG. 1a is a diagram showing a variable slit section which is a main part of the present invention, and FIG. 1b is a block diagram showing an embodiment of the detection mechanism (variable slit reference position detection mechanism) of the present invention. In FIG. 1b, the detection mechanism 15 is roughly composed of a variable slit section 16, an opening/closing means 17, and a control section 18.
まず、前記可変スリツト部１６の構成を第１図
ａに基づいて詳述する。 First, the structure of the variable slit section 16 will be explained in detail based on FIG. 1a.
なお、従来の検出機構１と同一構成部分には同
一番号を付して説明する。 Note that the same components as those of the conventional detection mechanism 1 will be described with the same numbers.
この可変スリツト部１６は前面に凹嵌部１９ａ
が形成された基台１９と、該基台１９に取付けら
れる幾つかの部品によつて構成されている。 This variable slit portion 16 has a recessed fitting portion 19a on the front surface.
It consists of a base 19 on which is formed and several parts attached to the base 19.
前記基台１９の凹嵌部１９ａの上部には左右２
つの固定片（ブロツク２）２ａ，２ａが固設され
ている。 The upper part of the recessed fitting part 19a of the base 19 has two left and right parts.
Two fixed pieces (blocks 2) 2a, 2a are fixedly installed.
また、前記凹嵌部の下部には２つの可動片（ブ
ロツク２）２ｂ，２ｂが並行移動自在に設けられ
ている。 Further, two movable pieces (blocks 2) 2b, 2b are provided below the recessed fitting portion so as to be movable in parallel.
さらに、この可動片２ｂ，２ｂの側面と前記固
定片２ａ，２ａの側面との間には各々２枚の板バ
ネ（ブロツク２）２ｃ，２ｃが架設固定されてい
てバネ圧により前記可動片２ｂ，２ｂ、固定片２
ａ，２ａを内方向に付勢している。前記可動片２
ｂ，２ｂには２枚の可変スリツト刃３，３が並設
されている。さらに、この各々の可変スリツト刃
３，３の所定位置（実施例では、可変スリツト刃
３，３上）には接点２０，２０が固設されてい
る。該接点２０は実施例において左の可変スリツ
ト刃３にはマイナス接点２０ａが、右の可変スリ
ツト刃３にはプラス接点２０ｂが各々固設されて
いる。また、可変スリツト刃３，３と接点２０，
２０との間には電気的導通を防止するための絶縁
板２１，２１が配設されている。 Furthermore, two leaf springs (blocks 2) 2c, 2c are respectively installed and fixed between the side surfaces of the movable pieces 2b, 2b and the side surfaces of the fixed pieces 2a, 2a, and the spring pressure causes the movable pieces 2b to , 2b, fixed piece 2
a, 2a are urged inward. Said movable piece 2
Two variable slit blades 3, 3 are arranged in parallel on b, 2b. Further, contacts 20, 20 are fixedly provided at predetermined positions of each of the variable slit blades 3, 3 (in the embodiment, on the variable slit blades 3, 3). As for the contacts 20, in the embodiment, a negative contact 20a is fixed to the left variable slit blade 3, and a positive contact 20b is fixed to the right variable slit blade 3. In addition, variable slit blades 3, 3 and contacts 20,
Insulating plates 21, 21 are disposed between the insulating plates 20 and 20 to prevent electrical conduction.
さらに、前記マイナス接点には微調整用ネジ２
２が取り付けられていて予め接点の微調整を行な
えるよう構成されている。従つて接点２０，２０
の間隔の調整は可変スリツト刃３，３の開口幅Ｌ
を決めた後、前記微調整用ネジ２２のみの簡単な
操作によつてプラス接点２０ｂとマイナス接点２
０ａが導通した位置で固設し位置決めが行なえる
ようになつている。 Furthermore, the negative contact has a fine adjustment screw 2.
2 is attached so that fine adjustment of the contacts can be made in advance. Therefore, the contacts 20, 20
Adjustment of the interval is by adjusting the opening width L of the variable slit blades 3, 3.
After determining the positive contact 20b and the negative contact 2 by simple operation of the fine adjustment screw 22,
It can be fixed and positioned at the position where 0a is conductive.
ところで、前記基台１９の外壁に固設された軸
受１９ｂ，１９ｂ間には、所定位置の２箇所に互
いに逆方向に螺刻の程こされたネジ部５ａ，５ｂ
の形成された送りネジ軸５が貫挿支持されてい
る。また、前記ネジ軸５ａ，５ｂには、その突起
部４ａ，４ａを前記左右の可動片２ｂ，２ｂの内
側面に当接させた状態で左右２つの送りナツト
４，４が各々螺合している。しかして、該送りナ
ツト４，４は前記送りネジ軸５の回転により相対
する方向に移動自在となつている。 Incidentally, between the bearings 19b, 19b fixed to the outer wall of the base 19, there are threaded parts 5a, 5b threaded in two predetermined positions in opposite directions.
A feed screw shaft 5 having a shape formed therein is inserted and supported. Further, two left and right feed nuts 4, 4 are screwed onto the screw shafts 5a, 5b, respectively, with their projections 4a, 4a in contact with the inner surfaces of the left and right movable pieces 2b, 2b. There is. Thus, the feed nuts 4, 4 are movable in opposite directions by rotation of the feed screw shaft 5.
さらに、前記送りネジ軸５には軸接手６を介し
て開閉手段１７としてのパルスモータが接続され
ている。この開閉手段１７では、送りネジ軸５を
回転させ送りナツト４，４を相対する方向に移動
させることにより可変スリツト刃３，３の開閉を
行なつている。 Further, a pulse motor serving as an opening/closing means 17 is connected to the feed screw shaft 5 via a shaft joint 6. This opening/closing means 17 opens and closes the variable slit blades 3, 3 by rotating the feed screw shaft 5 and moving the feed nuts 4, 4 in opposing directions.
また、前記開閉手段１７には制御部１８が接続
されている。この制御部１８は可変スリツト部制
御・検出手段２３と設定手段２４とによつて構成
されるもので、該設定手段２４では、基準位置
（可変スリツト刃３，３の開口幅Ｌが所望の開口
幅L′に達したときの位置）や可変スリツト刃３，
３の最大開口幅等任意の開口幅の設定・操作を行
なつている。また、前記可変スリツト部制御・検
出手段２３では、基準位置での開口幅L′、設定手
段２４で設定した開口幅に基づいて開閉手段１７
の制御を行なつている。さらに、開閉手段１７で
あるパルスモータが駆動制御され送りネジ軸５が
回転し、送りナツト４，４の移動により可変スリ
ツト刃３，３が開閉して基準位置に達すると、接
点２０，２０が導通して前記基準位置の検出がな
され可変スリツト部制御・検出手段２３に基準位
置設定信号として入力され設定記憶されるように
なつている。 Further, a control section 18 is connected to the opening/closing means 17. This control section 18 is composed of a variable slit section control/detection means 23 and a setting means 24. The setting means 24 is configured to set the opening width L of the variable slit blades 3, 3 to a desired opening. position when width L′ is reached) and variable slit blade 3,
Setting and operating arbitrary opening widths such as the maximum opening width of No. 3 are performed. The variable slit portion control/detection means 23 also uses the opening/closing means 17 based on the opening width L' at the reference position and the opening width set by the setting means 24.
is under control. Further, the pulse motor serving as the opening/closing means 17 is driven and controlled to rotate the feed screw shaft 5, and when the variable slit blades 3, 3 open and close due to the movement of the feed nuts 4, 4 and reach the reference position, the contacts 20, 20 open and close. The reference position is detected by conducting and is input to the variable slit portion control/detection means 23 as a reference position setting signal, and the setting is stored.
次に、上述した構成における作用について説明
する。 Next, the operation of the above-described configuration will be explained.
まず、第２図ａに示すように可変スリツト刃
３，３が基準位置に位置するように開口幅をL′に
設定する。そして、マイナス接点２０ａに取り付
けられた微調整用ネジ２２によつてマイナス接点
２０ａとプラス接点２０ｂとが導通するように調
整し固定する。これにより、可変スリツト刃３，
３と接点２０，２０の位置が対応するので基準位
置がずれることはない。しかして、上記設定調整
を終えると、制御部１８により開閉手段であるパ
ルスモータ１７を制御駆動して可変スリツト刃
３，３を開閉させることにより前記基準位置を一
旦検出した後、設定手段２４で設定した任意の開
口幅に設定される。 First, the opening width is set to L' so that the variable slit blades 3, 3 are located at the reference position as shown in FIG. 2a. Then, the fine adjustment screw 22 attached to the negative contact 20a is used to adjust and fix the negative contact 20a and the positive contact 20b so that they are electrically connected. As a result, the variable slit blade 3,
3 corresponds to the positions of the contacts 20, 20, so the reference position will not shift. After completing the setting adjustment, the control section 18 controls and drives the pulse motor 17 serving as the opening/closing means to open and close the variable slit blades 3, 3, thereby once detecting the reference position. It is set to the arbitrary opening width that you set.
次に、上記動作の詳細について可変スリツト刃
３，３の開口幅をL1（第１図ａの状態）からL2
（第２図ｂの状態）に設定する場合を例にとつて
説明する。 Next, regarding the details of the above operation, we will change the opening width of the variable slit blades 3, 3 from L 1 (state in Figure 1 a) to L 2
(The state shown in FIG. 2b) will be explained by taking as an example.
まず、設定手段２４で可変スリツト刃３，３の
開口幅をL2に設定する。すると、制御部１８に
より開閉手段１７であるパルスモータが制御駆動
され送りネジ軸５が矢印Ｃ方向（第１図ａに示
す）に回転する。続いて、送りネジ軸５に螺合し
ている左右の送りナツト４，４が内方向に移動す
るとともに左右の可動片２６，２６も内方向へ移
動して可変スリツト刃３，３が閉じていく。この
とき、前記可動片２ｂ，２ｂは板バネ２ｃ，２ｃ
はバネ圧により内方向に付勢されている。そし
て、前記可変スリツト刃３，３の開口幅がＬ（第
２図ａに示す）となり基準位置に達すると接点２
０，２０が導通し可変スリツト部制御検出手段２
４に基準位置設定信号として入力され基準位置の
検出が一旦行なわれる。次に、基準位置での開口
幅L′と予め設定手段２５に設定した開口幅L2に
基づいて制御部１８により開閉手段１７のパルス
モータが制御駆動され送りネジ軸５が矢印Ｄ方向
（第２図ａに示す）に逆転される。すると、送り
ネジ軸５に螺合している左右の送りナツト４，４
は外方向に移動するとともに左右の可動片２ｂ，
２ｂも外方向へ移動して可変スリツト刃３，３が
開いていく。そして、可変スリツト刃３，３の開
口幅がL2になると可変スリツト部制御手段２４
より開閉手段１７に停止信号が入力され開閉手段
１７であるパルスモータが停止する。 First, the setting means 24 sets the opening width of the variable slit blades 3, 3 to L2 . Then, the control unit 18 controls and drives the pulse motor serving as the opening/closing means 17, and the feed screw shaft 5 rotates in the direction of arrow C (shown in FIG. 1a). Subsequently, the left and right feed nuts 4, 4 screwed onto the feed screw shaft 5 move inward, and the left and right movable pieces 26, 26 also move inward, and the variable slit blades 3, 3 close. go. At this time, the movable pieces 2b, 2b are attached to the plate springs 2c, 2c.
are urged inward by spring pressure. Then, when the opening width of the variable slit blades 3, 3 becomes L (shown in FIG. 2a) and reaches the reference position, the contact point 2
0 and 20 are electrically conductive and the variable slit portion control detection means 2
4 as a reference position setting signal, and the reference position is once detected. Next, the pulse motor of the opening/closing means 17 is controlled and driven by the control unit 18 based on the opening width L' at the reference position and the opening width L 2 preset in the setting means 25, and the feed screw shaft 5 is moved in the direction of arrow D (the direction of arrow D). (shown in Figure 2a). Then, the left and right feed nuts 4, 4 screwed onto the feed screw shaft 5
moves outward, and the left and right movable pieces 2b,
2b also moves outward, and the variable slit blades 3, 3 open. Then, when the opening width of the variable slit blades 3, 3 becomes L2 , the variable slit section control means 24
A stop signal is input to the opening/closing means 17, and the pulse motor serving as the opening/closing means 17 is stopped.
なお、上述した実施例では、接点２０，２０を
可変スリツト刃３，３上に設けた構成としている
が、可変スリツト刃３，３自身によつて接点とし
てのスイツチを構成し基準位置の検出を行なうこ
とも可能である。 In the embodiment described above, the contacts 20, 20 are provided on the variable slit blades 3, 3, but the variable slit blades 3, 3 themselves constitute a switch as a contact and detect the reference position. It is also possible to do so.
［考案の効果］
以上説明したように本考案の検出機構によれ
ば、下記に示す効果を得ることができる。[Effects of the Invention] As explained above, according to the detection mechanism of the present invention, the following effects can be obtained.
(1) 可変スリツト刃の基準位置を検出するための
接点を可変スリツト部の基台内部に設けたので
スペースフアクターが良くなるとともに検出機
構の軽量化を図ることができる。(1) Since the contact point for detecting the reference position of the variable slit blade is provided inside the base of the variable slit part, the space factor is improved and the weight of the detection mechanism can be reduced.
(2) 部品点数、組立調整の減少により部品費、組
立調整費等のコストの低減化を図ることができ
る。(2) Costs such as parts costs and assembly adjustment costs can be reduced by reducing the number of parts and assembly adjustments.
(3) 従来のように機械的摩耗による位置ずれが生
ずる恐れがないので検出位置の精度及び信頼性
が向上する。(3) Since there is no risk of positional deviation due to mechanical wear as in the past, the accuracy and reliability of the detected position is improved.
従つて、予じめ調整して設定した基準開口幅の
スリツト状開口を、２枚の可変スリツト刃３，３
の対向壁面間に常に正確に形成されることが出
来、長時間の使用によつても該開口幅に狂いが生
ずるということがなく、また基準開口幅の変更操
作も微調整用ネジ２２の操作により正確且つ簡単
に行なわせることができる。 Therefore, a slit-shaped opening having a reference opening width adjusted and set in advance is formed by using two variable slit blades 3, 3.
The opening width can always be accurately formed between the opposing wall surfaces, and the opening width will not deviate even after long-term use, and the reference opening width can be changed by operating the fine adjustment screw 22. This can be done more accurately and easily.
第１図ａは、本考案の要部である可変スリツト
部を示す図、第１図ｂは、本考案の検出機構の一
実施例を示すブロツク図、第２図ａ，ｂは、同機
構の動作の一例を示す図、第３図は、従来の検出
機構を示す図である。
３……可変スリツト刃、１５……可変スリツト
基準位置検出機構（検出機構）、１６……可変ス
リツト部、１７……開閉手段、１８……制御部、
２０……接点、２０ａ……マイナス接点、２０ｂ
……プラス接点、２４……可変スリツト部制御・
検出手段、２５……設定手段。
Fig. 1a is a diagram showing a variable slit section which is a main part of the present invention, Fig. 1b is a block diagram showing an embodiment of the detection mechanism of the present invention, and Figs. 2a and b are diagrams showing the same mechanism. FIG. 3 is a diagram showing an example of the operation of the conventional detection mechanism. 3... Variable slit blade, 15... Variable slit reference position detection mechanism (detection mechanism), 16... Variable slit section, 17... Opening/closing means, 18... Control section,
20...Contact, 20a...Minus contact, 20b
...Positive contact, 24...Variable slit control/
Detection means, 25...setting means.
Claims (1)
状の開口が貫通して形成された２枚の可変スリツ
ト刃３，３が設けられた可変スリツト部１６と、 前記２枚の可変スリツト刃３，３の各々の所定
対向位置に固設されたプラス接点２０ｂ及びマイ
ナス接点２０ａからなり、前記開口の幅が所定幅
となつたときに互いに当接して接点を閉じる接点
と、 前記プラス接点２０ｂ及びマイナス接点２０ａ
の少なくとも一方に取り付けられ、該少なくとも
一方の接点を、該接点が固設された可変スリツト
刃の対向壁面位置から前記開口の幅方向に移動調
整可能とした微調整用ネジ２２と、 前記可変スリツト刃を開閉する開閉手段１７
と、 前記可変スリツト刃を所望の開口幅に設定する
ための設定手段２４と、 前記開閉手段１７を制御するとともに、前記接
点が閉じて導通したときに前記可変スリツト刃が
予め設定された開口幅をなす基準位置に位置した
ことを検出する可変スリツト部制御・検出手段２
３とからなる制御部と、 を具備したことを特徴とする可変スリツト基準位
置検出機構。[Claims for Utility Model Registration] A variable slit portion 16 provided with two variable slit blades 3, 3 formed with a slit-shaped opening penetrating through the space between opposing wall surfaces so that the opening width can be freely adjusted; Consisting of a positive contact 20b and a negative contact 20a fixedly installed at a predetermined opposing position of each of the variable slit blades 3, 3, the contacts contact each other and close the contact when the width of the opening reaches a predetermined width. , the positive contact 20b and the negative contact 20a
a fine adjustment screw 22 that is attached to at least one of the variable slits and is capable of moving and adjusting the at least one contact point in the width direction of the opening from a position on the opposite wall surface of the variable slit blade to which the contact point is fixed; Opening/closing means 17 for opening/closing the blade
and a setting means 24 for setting the variable slit blade to a desired opening width; and controlling the opening/closing means 17 and controlling the variable slit blade to a preset opening width when the contact is closed and conductive. Variable slit portion control/detection means 2 for detecting that the variable slit portion is located at the reference position forming the
3. A variable slit reference position detection mechanism comprising: a control section comprising: 3;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986056037U JPH055532Y2 (en) | 1986-04-16 | 1986-04-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986056037U JPH055532Y2 (en) | 1986-04-16 | 1986-04-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62168416U JPS62168416U (en) | 1987-10-26 |
| JPH055532Y2 true JPH055532Y2 (en) | 1993-02-15 |
Family
ID=30884492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986056037U Expired - Lifetime JPH055532Y2 (en) | 1986-04-16 | 1986-04-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH055532Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4520918B2 (en) * | 2005-08-12 | 2010-08-11 | 株式会社ミツトヨ | Slit width adjusting device and microscope laser repair device having the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6071905A (en) * | 1983-09-28 | 1985-04-23 | Metoroole:Kk | Length measuring device for wide range |
-
1986
- 1986-04-16 JP JP1986056037U patent/JPH055532Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6071905A (en) * | 1983-09-28 | 1985-04-23 | Metoroole:Kk | Length measuring device for wide range |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62168416U (en) | 1987-10-26 |
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