JPS5979108A - Protecting device of scale - Google Patents

Protecting device of scale

Info

Publication number
JPS5979108A
JPS5979108A JP18875182A JP18875182A JPS5979108A JP S5979108 A JPS5979108 A JP S5979108A JP 18875182 A JP18875182 A JP 18875182A JP 18875182 A JP18875182 A JP 18875182A JP S5979108 A JPS5979108 A JP S5979108A
Authority
JP
Japan
Prior art keywords
scale
attached
constant pressure
guide rail
winding
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.)
Granted
Application number
JP18875182A
Other languages
Japanese (ja)
Other versions
JPH0129403B2 (en
Inventor
Hideo Sakata
坂田 秀夫
Koji Yoda
依田 幸二
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsutoyo Manufacturing Co Ltd
Original Assignee
Mitsutoyo Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsutoyo Manufacturing Co Ltd filed Critical Mitsutoyo Manufacturing Co Ltd
Priority to JP18875182A priority Critical patent/JPS5979108A/en
Priority to US06/539,361 priority patent/US4551919A/en
Priority to DE3338752A priority patent/DE3338752C2/en
Publication of JPS5979108A publication Critical patent/JPS5979108A/en
Publication of JPH0129403B2 publication Critical patent/JPH0129403B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00Measuring instruments characterised by the use of mechanical techniques
    • G01B3/002Details

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

PURPOSE:To simplify the structure and facilitate assembling and decomposition, by protecting a scale with a band-shaped constant pressure spring which has one end attached to a member having the scale and has the other end attached to a winding deice of a member having a detecting unit. CONSTITUTION:Two winding devices 27 are provided in the lengthwise direction of a guide rail 4, where a scale 7 is stuck, on a supporting block 22 which is supported movably by the guide rail 4. The other ends of scale protecting devices 8 which have one ends attached to shock absorbers provided in both ends of the guide rail 4 are attached windably to outside circumferences of collars of winding devices 27. This protecting device 8 consists of a band-shaped constant pressure spiral spring. Since left and right protecting devices 8 are provided independently of each other, a supporting member 9 is moved uniformly in any direction, and it is unnecessary to bypass a displacement detector 33, and thus, the internal structure is simplified, and assembling and decomposition are facilitated.

Description

【発明の詳細な説明】 本発明は、二次元測定機、三次元測定機、形状測定機等
のような測定機あるいは工作機械等のように、スケール
を有する第1部材と、変位検出ユニットを有する第2の
部材とが相対外・位置」能とされた機器に用いられるス
ケールの保護装置に関する。
Detailed Description of the Invention The present invention provides a first member having a scale and a displacement detection unit, such as a measuring machine such as a two-dimensional measuring machine, a three-dimensional measuring machine, a shape measuring machine, or a machine tool. The present invention relates to a scale protection device used in equipment in which a second member having a second member has a relative external/positional function.

一般に、この種機器においては、第1、第2部材の相対
変位量を高精度に測定するため、がラススケール、磁気
スケール、金属板反射型スケール尋の高精度加工された
スケールが用いられ、この高精度を維持するためにはス
ケールの表面を保護する必要がある。すなわち、操作員
の(多触による油の付着、鉄屑、塵芥等の堆積、工具等
の当接による損傷が生じると所望の測定精度を得られな
い。
Generally, in this type of equipment, in order to measure the amount of relative displacement between the first and second members with high precision, a highly precisely machined scale such as a lath scale, a magnetic scale, or a metal plate reflective scale is used. In order to maintain this high accuracy, it is necessary to protect the surface of the scale. That is, if damage occurs due to oil adhesion due to multiple touches by the operator, accumulation of iron chips, dust, etc., or contact with tools, etc., the desired measurement accuracy cannot be obtained.

このため、従来の機器にあってはスケール表面の保護装
置が設けられている。しかし、従来の装置によると摺動
抵抗の増大に伴なう測定精度の低下、組立、分解の困難
さ等が生じるという問題があった。例えば、実公昭39
−32506号公報及び実公昭56−35765号公報
によれば、一枚の帯状部月を用い、この帯状部材をラッ
クあるいはスケールの長手方向に沿って渡設し、この帯
状部材はスケール等に相対移動可能に設けられだ摺動台
あるいはスライダ内を貫通して配置され、かつ、この帯
状部材を渡設時の張力によシスケール収納ケース面ある
いはスケール面に密着させる構造が示されている。しか
し、これらの公知の構造では、ケースあるいはスケール
と一体の帯状部材を用いているため、密着力を強めるた
−めには張力を大きくする必要があり、これはスライダ
の摺動抵抗を過大にするとともに、移動方向反転時の戻
り誤差の発生原因となっていた。また、帯状部材の板厚
に直交する方向のスライダ等の厚さを増大させて装置を
大型化させ、かつ、その構造も複雑となって組立、分解
に不便なばかりでなく、スケールの点検も不便となって
いた。さらに、帯状部材の温度変化による伸縮、振動に
よる離反等によってケースとの間に隙間が生じたり、帯
状部材の/辷るみてスライダの移動をl511害する可
能性があるという問題点もあった。
For this reason, conventional equipment is provided with a scale surface protection device. However, conventional devices have problems such as decreased measurement accuracy due to increased sliding resistance, and difficulty in assembly and disassembly. For example, Jikko 39
According to Publication No. 32506 and Japanese Utility Model Publication No. 56-35765, a single strip member is used, and this strip member is placed along the longitudinal direction of the rack or scale, and this strip member is placed relative to the scale etc. A structure is shown in which the belt-like member is disposed penetrating through a movably provided sliding table or slider, and the belt-like member is brought into close contact with the scale storage case surface or the scale surface by the tension applied during the installation. However, since these known structures use a band-like member that is integrated with the case or scale, it is necessary to increase the tension in order to strengthen the adhesion, which may excessively increase the sliding resistance of the slider. This also causes a return error when the direction of movement is reversed. In addition, the thickness of the slider, etc. in the direction perpendicular to the thickness of the strip member is increased, making the device larger and the structure more complicated, which not only makes assembly and disassembly inconvenient, but also makes it difficult to inspect the scale. It was an inconvenience. Furthermore, there is a problem that a gap may be created between the band member and the case due to expansion and contraction due to temperature changes, separation due to vibration, etc., and movement of the slider may be impaired due to the band member sliding.

本発明の目的は、スケールの保護全有効に行なえるとと
もに、スケールを有する第1部月と変位検出ユニットを
有する第2部月との相対移動時の摺動抵抗が少なく、か
つ、その組立、分解も答易なスケールの保護装置を提供
するにある。
An object of the present invention is to be able to fully protect the scale, to reduce sliding resistance during relative movement between the first part having the scale and the second part having the displacement detection unit, and to reduce the sliding resistance when assembling the first part having the scale and the second part having the displacement detection unit. Disassembly is also easy to provide to provide scale protection.

本発明は、スケールを有する第1部月に一端が取付けら
れるとともに、他端が第2部月に設けられた巻取装置に
巻取可能にされた帯状の定圧はねによりスケールの保護
装置を構成し、こね、により動抵抗を少なくシ、かつ、
この巻取り構造によって定圧ばねを第2部材内に貫通さ
せないようにして全体構造を簡単にし、組立、分解を容
易にして前記目的を達成しようとするものである。
The present invention provides a scale protection device using a band-shaped constant pressure spring whose one end is attached to a first part having a scale and whose other end can be wound up by a winding device provided on a second part. By forming and kneading, the dynamic resistance is reduced, and
This winding structure prevents the constant pressure spring from penetrating into the second member, thereby simplifying the overall structure and facilitating assembly and disassembly, thereby achieving the above object.

以下、本発明を三次元測定機に適用した一実施例を図面
に基づいて説明する。
An embodiment in which the present invention is applied to a coordinate measuring machine will be described below with reference to the drawings.

第1図及び第2図の全体構成図において、石定盤からな
る基台1の上面には複数の被測定物取付用ねじ穴2が設
けられるとともに、その長手方向に直交する前後の端面
に断面り字形の把手3がそれぞれ設けられている。この
基台1の左右の両側面には第1部材としての2本の案内
レール4,5が複数の植込軸6を介して取付けられ、こ
れらの案内レール4,5は、基台1の長手方向(Y軸線
力向)長さより長く形成されるとともに、基台1の上面
より下方であってこの上面に平行かつ基台1の側面から
突出して設けられている。また、両案内レール4,5ば
、円柱の両側を平行に削り落して長手方向に直交する断
面形状が内張部分及び直線部分からなる略小判形となる
ようにされ(第3図参照)、さらに、−力すなわち第1
図中手前の案内レール4の外側面には、該案内レール4
の長手方向に沿って形成された溝4A内に、μn1オー
ダの縦縞状目盛を形成されだ長尺のスケール7がスケー
ル面を垂直にして貼付され(第3,4図参照)、このス
ケール7の表面は後述するスケール保護装置8により保
護されている。
In the overall configuration diagrams shown in FIGS. 1 and 2, a plurality of screw holes 2 for mounting the object to be measured are provided on the upper surface of a base 1 consisting of a stone surface plate, and on the front and rear end surfaces perpendicular to the longitudinal direction. A handle 3 having an angular cross-section is provided respectively. Two guide rails 4 and 5 as first members are attached to the left and right sides of the base 1 via a plurality of implant shafts 6, and these guide rails 4 and 5 are attached to the left and right sides of the base 1. It is formed to be longer than the length in the longitudinal direction (Y-axis force direction), and is provided below the upper surface of the base 1, parallel to this upper surface, and protruding from the side surface of the base 1. In addition, both guide rails 4 and 5 are shaved off in parallel on both sides of the cylinder so that the cross-sectional shape perpendicular to the longitudinal direction is approximately oval-shaped, consisting of a lining part and a straight part (see Fig. 3). Furthermore, −force i.e. the first
On the outer surface of the guide rail 4 in the front in the figure, the guide rail 4 is
In the groove 4A formed along the longitudinal direction of the scale 7, a long scale 7 having vertical striped graduations of μn1 order is pasted with the scale surface perpendicular (see FIGS. 3 and 4). The surface of the scale is protected by a scale protection device 8, which will be described later.

前記両側の案内レール4.5には、第2部材としての測
定子支持部材9が両案内レール4,5の長手方向に沿っ
てY軸線方向往復動自在に支持されている。この測定子
支持部材9は、一対の支柱10と、これらの支柱10間
に固定的に取付けられた寸法規制軸11と、前記支柱1
0の上部間において位置調整ブロック12を介して取付
けられた一対のX軸13と、この一対のX軸13に沿っ
て摺動自在に支持されたXスライダ14と、このXスラ
イダ14に傾斜可能に取付けられたスピンドル支持体1
5と、このスピンドル支持体15にZ軸線方向摺動自在
に支持されたスピンドル(Zスライダ)16とから構成
され、この測定子支持部材9のスピンドル16の下端に
測定子17が着脱可能に支持され、この6(1j定子1
7の被測定物18に対する三次元的変位量が、前記スケ
ール7と支柱下部に組込まれた後述する変位検出器33
(第4図参照)とのY方向変位禁、前記XIPII]1
3に設けられた図示しないスケールとXスライダ14内
に設けられ図示しない変位検出器とのX方向変位量及び
前記スピンドル16に設けられたスケール19とスピン
ドル支持体15内に設けられた図示しない変位検出器と
のZ方向変位量として検出されるようになっている。
A probe support member 9 serving as a second member is supported by the guide rails 4.5 on both sides so as to be able to reciprocate in the Y-axis direction along the longitudinal direction of both guide rails 4,5. This gauge head support member 9 includes a pair of pillars 10, a dimension regulating shaft 11 fixedly attached between these pillars 10, and a pair of pillars 10.
A pair of X axes 13 are attached between the upper portions of 0 via a position adjustment block 12, an X slider 14 is slidably supported along the pair of X axes 13, and the X slider 14 is tiltable. Spindle support 1 mounted on
5 and a spindle (Z slider) 16 supported by this spindle support member 15 so as to be slidable in the Z-axis direction, and a gauge head 17 is removably supported at the lower end of the spindle 16 of this gauge head support member 9. and this 6(1j constant 1
A displacement detector 33 (to be described later) incorporated in the scale 7 and the lower part of the column 7 detects the three-dimensional displacement amount of the object 18 to be measured.
(See Figure 4) Prohibition of displacement in the Y direction, XIP II] 1
3 and the displacement detector (not shown) provided in the X slider 14, and the displacement (not shown) between the scale 19 provided in the spindle 16 and the spindle support 15. It is detected as the amount of displacement in the Z direction with respect to the detector.

前記一方の案内レール4の両端にはショックアブシー・
ぐ20がそれぞれ取付けられるとともに、他7jの案内
レール5の内端には案内レール5よシ大径のストンA2
1が取付けられ、これらのショックアブシーパ20及び
ストツノや21により測定子支持部材9の案内レール4
.5からの脱落が防止されている。
Shock absorbers are installed at both ends of the one guide rail 4.
A stone A2 having a diameter larger than that of the guide rail 5 is attached to the inner end of the guide rail 5 of the other 7j.
1 is attached, and the guide rail 4 of the probe support member 9 is attached by these shock absorbers 20 and strut horns 21.
.. 5 is prevented from falling off.

第:う図及び第4図には、測定子支持部材9の支柱10
の下部における支柱10と案内レール4との係合部の詳
細構造が示されている。これらの図において、支柱10
の下部には支持ブロック22が設けられ、この支持ブロ
ック221・τは、前布゛案内レール4の外側面すなわ
ちスケール7が貼付された側の平面部に当接転動される
上下一対のローラ23が支持軸24を介して回転自在に
支持されている。この支持軸24の外周において、前記
一対のローラ23間には第1の円筒部材としてのスペー
サ25が介装されるとともに、このスペーサ25の外周
には第2の円筒部材としての糸巻状カラー26が被嵌さ
れ、このスペーサ25により両ローラ23間の寸法が保
持されるとともに、弗素樹脂等の低摩擦材からなるMf
+記糸巻糸巻状カラー26りローラ23の回転の円滑さ
が保持されている。この際、支持軸24、スペーサ25
及びカラー26により巻取装置27が構成されている。
In Fig. 4 and Fig. 4, the column 10 of the probe support member 9 is shown.
The detailed structure of the engagement portion between the support column 10 and the guide rail 4 at the lower part of the figure is shown. In these figures, the strut 10
A support block 22 is provided at the lower part of the support block 221.τ, and this support block 221.tau. has a pair of upper and lower rollers that roll in contact with the outer surface of the front cloth guide rail 4, that is, the flat surface of the side to which the scale 7 is attached. 23 is rotatably supported via a support shaft 24. A spacer 25 as a first cylindrical member is interposed between the pair of rollers 23 on the outer periphery of the support shaft 24, and a pincushion-shaped collar 26 as a second cylindrical member is disposed on the outer periphery of the spacer 25. is fitted, and the spacer 25 maintains the dimension between both rollers 23, and Mf made of a low friction material such as fluororesin
+ The smooth rotation of the thread-wound collar 26 and the roller 23 is maintained. At this time, the support shaft 24, the spacer 25
A winding device 27 is constituted by the collar 26 and the collar 26 .

この巻取装置27めカラー26の外周には、一端を前記
ショックアブシーバ20に取付けられたスケール保護装
置8の他端が巻取り可能に取(=1けられている。この
保護装置8は、ぜん丑い状に巻回された定圧ばねからな
る帯状部材で構成されている。
On the outer periphery of this winding device 27th collar 26, one end of a scale protection device 8 is attached to the shock absorber 20, and the other end of the scale protection device 8 is attached so as to be able to be wound up. , consists of a belt-shaped member made of a constant pressure spring wound in the shape of an alligator.

ここにおいて、保護装置8を構成する定圧ばねの自由状
態の縮径内径は、前記カラー26の定圧ばね巻取9部外
径より小さくなるように設計され、定圧ばねの特性を利
用して自動巻き付けができるようになっている。
Here, the reduced inner diameter in a free state of the constant pressure spring constituting the protection device 8 is designed to be smaller than the outer diameter of the constant pressure spring winding section 9 of the collar 26, and the automatic winding is performed using the characteristics of the constant pressure spring. is now possible.

丑だ、支持ブロック22には、前記案内レール4の」−
1の円筒面に当接転動される上下のローラ29.30が
支持軸31..32を介して回転自在に支持されている
。これらのロー229.30及び前記一対のローラ23
によp案内レール4を120歴方向から挾持して支持グ
ロック22すなわち測定子支持部材9を案内レール4に
沿って円滑に摺動させうるようになっている。まだ、こ
れらのローラ29 、30 、及び23からなるローラ
群は、支持ブロック22すなわち測定子支持部材9の案
内レール4の長手方向に沿った両側に各1組設けられて
いる。この際、両側とは必ずしも両端でなくともよく、
第4図図示のものは、右側の一組は支柱10の比較的中
央に寄った位置に描かれているが、図示しない右端近傍
に設けてもよく、要するに支持ブロック22に少なくと
も2組設けられていればよい。また、第4図中右側のロ
ーラ群中、上下一対のローラ23の支持軸24にも前述
と同様に第1の円筒部材としてのスペーサ25及び第2
の円筒部材としての糸巻状カラー26が嵌着烙れてオリ
、これらの支持軸24、スペーサ25及びカラー26に
より同じく巻取装置27が構成され、結局、巻取装置2
7は支持ブロック220案内レール長手方向に2細膜け
られ、右側の巻取装置27にも、一端を第2図中右側の
ショックアグゾーバ20に固定された帯状定圧ばねから
なるスケール保護装置8の他端が巻取られている。従っ
て、両巻取装置27に他端を巻取られたスケール保護装
置8の一端側はそれぞれ案内レール4に貼付されたスケ
ール7の表面に沿って左右に伸延きれ、スケール7を保
護するようVこ−gfL、 6111定子支持部材90
案内レール4に沿った動きに伴ない一力の定圧ばねは伸
延され、他方の定圧はねは巻取装置27に巻取られるよ
うになっている。さらに、両スケール保換装置8を構成
する定圧げねd2、?f、ぼ均等のばね特性とされ、測
定子支持部側9の左右いずれへの移動もほぼ等しい力で
行なえるようになっている。
Unfortunately, the support block 22 has the guide rail 4.
The upper and lower rollers 29, 30 that are rolled into contact with the cylindrical surface of the support shaft 31. .. It is rotatably supported via 32. These rows 229.30 and the pair of rollers 23
By holding the guide rail 4 in the 120-stroke direction, the support glock 22, that is, the probe support member 9, can be smoothly slid along the guide rail 4. Still, one set of roller groups each consisting of these rollers 29 , 30 , and 23 are provided on both sides of the support block 22 , that is, the guide rail 4 of the probe support member 9 along the longitudinal direction. In this case, both sides do not necessarily have to be both ends,
In the one shown in FIG. 4, the one set on the right side is drawn at a position relatively close to the center of the support 10, but it may also be provided near the right end (not shown).In short, at least two sets are provided on the support block 22. All you have to do is stay there. Further, in the roller group on the right side of FIG. 4, the support shaft 24 of the upper and lower pair of rollers 23 is also provided with a spacer 25 as a first cylindrical member and a second spacer as described above.
When the thread-like collar 26 as a cylindrical member is fitted and heated, the support shaft 24, the spacer 25 and the collar 26 constitute the winding device 27, and eventually the winding device 2
Reference numeral 7 denotes a support block 220, and a scale protection device 8 consisting of a band-shaped constant pressure spring fixed to the right-hand side shock absorber 20 in FIG. The other end is wound. Therefore, one end side of the scale protector 8, the other end of which is wound up by both winding devices 27, is extended left and right along the surface of the scale 7 attached to the guide rail 4. This-gfL, 6111 stator support member 90
As the guide rail 4 moves along the guide rail 4, one constant pressure spring is stretched, and the other constant pressure spring is wound up by a winding device 27. Furthermore, the constant pressure cage d2, which constitutes both scale retention devices 8, ? f, spring characteristics are approximately equal, so that movement of the probe supporting portion side 9 to the left or right can be performed with approximately the same force.

前記支持ブロック22には、第4図の概略構成図に示さ
れるように、測定子支持部材9のY軸線方向の移動量を
計測するY方向変位量検出装置を前記スケール7と共に
構成する変位検出ユニット3:うが設けられている。こ
のユニット33は、ガラスなどの透明板に前記スケール
7と同様彦目盛を形成されたインデックススケール34
と、このインデックススケール34を介してスケール7
の表面に光を当てる発光素子35と、この発光素子35
から発射されスケール7で反射された光を受光する受光
素子36とから構成され、両スケール7.34の相対移
動に基づく両目盛の明暗による受光協、の変化によって
受光素子36に発生するサイン波状の霜′、流で、支持
部材9のY方向移動変位預゛が開側できるようになって
いる。この際、発光素子35と受光素子36との光軸は
V字状になるよう配詔され、発光素子35の光がスケー
ル7で反射して確実に受光素子36に到達するようにさ
れている。
As shown in the schematic configuration diagram of FIG. 4, the support block 22 includes a displacement detection device that, together with the scale 7, constitutes a Y-direction displacement amount detection device for measuring the amount of movement of the probe support member 9 in the Y-axis direction. Unit 3: A cage is provided. This unit 33 includes an index scale 34 which is formed with a diagonal scale similar to the scale 7 on a transparent plate such as glass.
and scale 7 via this index scale 34.
a light-emitting element 35 that emits light on the surface of the light-emitting element 35;
The light-receiving element 36 receives the light emitted from the scale 7 and reflected by the scale 7, and a sine wave shape is generated in the light-receiving element 36 due to changes in the light-receiving relationship due to the brightness and darkness of both scales based on the relative movement of both scales 7 and 34. The movement of the support member 9 in the Y direction is made possible by the frost and flow. At this time, the optical axes of the light emitting element 35 and the light receiving element 36 are arranged in a V-shape so that the light from the light emitting element 35 is reflected by the scale 7 and reaches the light receiving element 36 without fail. .

第5図及び第6図には前記ショックアブゾーパ20の詳
細構造が示され、これらの図において、アグゾーパ20
は次のように構成されている。すなわち、案内レール4
の端部に摺動自在に係合されるとともに案内レール4の
端部に形成された段部端面4Bに当接可能な内周突部3
7AQ有する略筒状の移動子37と、案内レール4の端
部にねじ込まれるとともに外周が移動子37の内周にほ
ぼ摺接するようにさgたばね受け38と、とのばね受け
38と移動子37の内周突部37Aとの間に介装され移
動子37を常時段部端面4Bに当接するよう付勢する圧
縮ばね39とから構成され、移動子37に測定子支持部
材9が当接された際、ばね39が撓むことにより支持部
材9の受ける衝撃が少なくなるようにされている。
5 and 6 show the detailed structure of the shock absorber 20, and in these figures, the shock absorber 20 is shown in detail.
is structured as follows. That is, the guide rail 4
An inner peripheral protrusion 3 that is slidably engaged with the end of the guide rail 4 and that can come into contact with a step end surface 4B formed at the end of the guide rail 4.
A substantially cylindrical slider 37 having a diameter of 7 AQ, a spring receiver 38 that is screwed into the end of the guide rail 4 and whose outer periphery is in almost sliding contact with the inner periphery of the slider 37; A compression spring 39 is interposed between the inner peripheral protrusion 37A of the slider 37 and biases the slider 37 so as to constantly contact the step end surface 4B, and the probe support member 9 is in contact with the slider 37. When the support member 9 is moved, the spring 39 is bent so that the impact received by the support member 9 is reduced.

また、定圧ばねからなるスケール保護装置8の一端部は
、ブツシュ40とナツト41との間に挾持され、?シト
42によシショックアプゾーバ20の移動子37に固定
されている。
Also, one end of the scale protection device 8 made of a constant pressure spring is held between a bush 40 and a nut 41. The seat 42 is fixed to the mover 37 of the shock absorber 20.

なお、第1図中左後方の案内レール5と測定子支持ブロ
ック9との保合は、案内レール5の上下の円筒部に18
0度方向から当接される一対のローラからなる複数対の
ローラ(図示せず)によυなされ、支持部材9は全体と
して円滑にY軸線方向に移動できるようにされている。
Note that the guide rail 5 at the rear left in FIG.
The supporting member 9 as a whole can be smoothly moved in the Y-axis direction by a plurality of pairs of rollers (not shown) that are in contact with each other from the 0 degree direction.

このように構成された本実施例を用いて被測定物18の
形状等を測定する場合は、従来一般の三次元測定機と全
く同様に、スピンドル16の下端を把持し、測定子17
を被測定物18の所定箇所に順次当接させ、この時の測
定子17のX、Y。
When measuring the shape etc. of the object to be measured 18 using this embodiment configured as described above, the lower end of the spindle 16 is held and the measuring head 17 is
are sequentially brought into contact with predetermined locations on the object to be measured 18, and at this time the X and Y positions of the measuring stylus 17 are

Z軸線方向の変位量を変位量検出ユニット33等で検出
して行なう。この際、スケール7は常に保護装置8で覆
われ、油等による汚損あるいは工具等の崩接による破損
等は有効に防止される。
This is done by detecting the amount of displacement in the Z-axis direction using the displacement amount detection unit 33 or the like. At this time, the scale 7 is always covered with a protection device 8, and damage caused by contamination with oil or the like or breakage of tools or the like is effectively prevented.

上述のような本実施例によれば、次のような効果がある
。すなわち、スケール保護装置8として一端をぜん壕い
状に巻かれた帯状の定圧ばねを用い、この保護装置8を
、スケール7を有する案内レール4の両端部と測定子支
持部材90両側との間に各1個、計2個用いたから、測
定子支持部材9の摺動の円滑さを保ちつつ十分なスケー
ル保護を行なうことができる。また、両保護装置8はほ
ぼ均等の特性を有するように構成されているから、支持
部拐9のいずれの方向への移動もほぼ均等に行なえ、か
つ、自動化の際支持部利駆動装置の負荷を一定にできて
自動化上有利にできる。さらに、保護装置8は左右別々
に設けたから、従来のように変位量検出器33を迂回さ
せる必要がなく、内部構造を簡単にでき、組立、分解が
容易となる。
According to this embodiment as described above, there are the following effects. That is, a band-shaped constant pressure spring with one end wound in a trench shape is used as the scale protection device 8, and this protection device 8 is installed between both ends of the guide rail 4 having the scale 7 and both sides of the gauge head support member 90. Since two probes are used, one for each probe, sufficient scale protection can be achieved while maintaining smooth sliding of the probe support member 9. Furthermore, since both protection devices 8 are configured to have substantially the same characteristics, the movement of the support portion 9 in any direction can be performed substantially equally, and the load on the support portion driving device can be increased during automation. can be kept constant, which is advantageous for automation. Furthermore, since the protection devices 8 are provided separately on the left and right sides, there is no need to bypass the displacement detector 33 as in the conventional case, the internal structure can be simplified, and assembly and disassembly can be facilitated.

また、巻取装置27は案内1/−ル4に支持部材9を係
合させるローラ23の支持軸24を利用して構成しだか
ら、この点からも構造を簡単にでき、かつ、小型化でき
、さらに、スケール面との間隙を保障できる。
Further, since the winding device 27 is constructed using the support shaft 24 of the roller 23 that engages the support member 9 with the guide 1/-rule 4, the structure can be simplified and miniaturized from this point of view as well. Furthermore, the gap with the scale surface can be guaranteed.

また、巻取装置27には、第2の円筒部栃としての糸巻
状カラー26が設けられているから、このカラー26の
巻付部外径を適宜に設定することにより、定圧ばねから
なる保護装置8とスケール面とを適宜な間隔に設定でき
る。さらに、このカラー26の糸巻のフランツ部により
定圧ばねが上下のローラ23に当接することを防止でき
、騒音の発生、回転の不調を有効に防止できる。また、
カラー26は低摩擦材から形成されているから、カラー
26とスペーt25とは常に円滑に回転でき、従って定
圧ばねの巻付き力を大きくしてもばね巻付きによる支持
部材9の移動の阻害を生ずることがない。
Further, since the winding device 27 is provided with a pincushion-shaped collar 26 as a second cylindrical part, by appropriately setting the outer diameter of the winding part of this collar 26, a protection made of a constant pressure spring can be applied. The device 8 and the scale surface can be set at an appropriate interval. Further, the flange portion of the threaded collar 26 prevents the constant pressure spring from coming into contact with the upper and lower rollers 23, effectively preventing noise generation and malfunction of rotation. Also,
Since the collar 26 is made of a low-friction material, the collar 26 and the space 25 can always rotate smoothly. Therefore, even if the winding force of the constant pressure spring is increased, the movement of the support member 9 is not inhibited by the winding of the spring. It never occurs.

きらに、定圧ばねの一端、自由端側をショックアプゾー
バ20の移動子37に取付けたから、アブゾーパとして
の機能を損うことなく移動子37の回転止めをできる。
Additionally, since one end of the constant pressure spring, the free end side, is attached to the mover 37 of the shock absorber 20, the mover 37 can be stopped from rotating without impairing its function as an absorber.

まだ、支持部材9の組立、分解の際、高精度に設定され
たスケール7の取外し等を必要とすることがなく、便利
であり、がっ、移動子37が一端に固定されたことにょ
シ分解時に定圧ばねの開放端が巻取装置27内に完全に
巻込捷れることがなく、この点からも分解時の作業を円
滑に行なえる。
When assembling and disassembling the support member 9, it is not necessary to remove the highly precisely set scale 7, which is convenient. During disassembly, the open end of the constant pressure spring is not completely wound into the winding device 27, and from this point of view as well, disassembly work can be carried out smoothly.

壕だ、スケール保護部材8を構成する定圧ばねの自由端
をスケール7側に、巻取端を検出ユニット33側に取付
けたから、前述のようにローラ23の支持軸24の利用
が可能になって巻取装置27用の特別な軸を設ける必要
がないばかりでなく、自由端固定部に発生する定圧ばね
の折れ曲がυでスケール面を傷つけることがない。すな
わち、実施例とは逆に、検出ユニット33側に自由端を
固定すると、この固定部に生じる曲がり部がスケール7
に対し常に相対移動することとなってスケール面を損傷
する可能性があるからである。
Well, the free end of the constant pressure spring that makes up the scale protection member 8 is attached to the scale 7 side, and the winding end is attached to the detection unit 33 side, so the support shaft 24 of the roller 23 can be used as described above. Not only is it not necessary to provide a special shaft for the winding device 27, but the bending of the constant pressure spring that occurs at the free end fixing portion does not damage the scale surface due to υ. That is, contrary to the embodiment, when the free end is fixed to the detection unit 33 side, the bending part that occurs in this fixed part becomes the scale 7.
This is because there is a possibility that the scale surface will be damaged due to constant movement relative to the scale surface.

さらに、定圧ばねの巻取側自然巻込径(初期巻込径)を
糸巻状カラー26の巻込部外径より小さくすることによ
り、巻きゆるみによる定圧ばねのたるみを防止して固練
性を維持でき、スケール7等を傷つけることを有効に防
止でき、かつ、円滑な引出しを保障できる。
Furthermore, by making the natural winding diameter (initial winding diameter) of the constant pressure spring smaller than the outer diameter of the winding part of the pincushion-shaped collar 26, the constant pressure spring is prevented from sagging due to loose winding, and the hardening property is improved. It is possible to maintain the scale 7, effectively prevent damage to the scale 7, etc., and ensure smooth withdrawal.

また、スケール7はスケール面を垂直にして案内レール
4に取付けられ、定圧はねもこれに平行に設けられてい
るから、スケール面を水平上向きに設ける場合と異なり
、定圧はねのたるみによるスケール面への接触さらには
この接触による(1−i傷を有効に防止できる。
In addition, the scale 7 is attached to the guide rail 4 with the scale surface vertical, and the constant pressure spring is also provided parallel to this, so unlike the case where the scale surface is installed horizontally upward, the scale due to the sagging of the constant pressure spring It is possible to effectively prevent scratches caused by contact with surfaces (1-i).

なお、実施にあたυ、巻取装置27は必ず[7もローラ
23の支持軸24を利用しなくともよいが、利用すれば
前述の利点がある。さらに、巻取装置27のス硬−サ2
5及びカラー26は、多少の騒音及び移動の不調を問題
としなければ、いずれが一方あるいは両者系省略しても
よい。また、定圧ばねは左右均婢に設けず、両ばねの間
に強弱をもたせ、自由状態において測定子支持部材9を
案内レール4のいずれかの一端側に常に戻すようにして
もよい。さらに、スケール7は光学的反射型スケールに
限らず、光透過型スケール、電磁気的スケール、(1イ
イ気的スケール、静電容量型スケール、さらには接点ス
ケールなどでもよく、これ1(伴ない検出器ユニット3
3も当該形式のユニットとされるのは勿論である。址だ
、前記実施例では本発明を三次元測定機・に適用した例
につき説明したが、本発明し」、これに限定されるもの
ではなく、二次元測定機、形状測定機等の大型の測定機
のみならず、]?ス、ハイ)f−ソ、ダイヤルグーノ等
の小型の計測器、あるいは、直線方向の移動を測定する
独立の測長器、例えばリニアスケール(商標)、さらに
は工作機械等の摺動部等にも適用でき、犬するに直線方
向に相互に移動用能な2物体の変位量を測定しようとす
る場合に適用できるものである。また、その適用形態は
肌1部材である案内レール4側が固定されてもあるいは
移動されてもよく、要するに第2部材である測定子支持
部材9と相対移動できるものであればよい。
Incidentally, in the implementation, the winding device 27 does not necessarily have to use the support shaft 24 of the roller 23, but if it is used, the above-mentioned advantages can be obtained. Further, the hardener 2 of the winding device 27
5 and the collar 26, one or both of them may be omitted unless some noise and poor movement are a problem. Further, the constant pressure springs may not be provided evenly on the left and right sides, but may have different strengths between the two springs so that the measuring element support member 9 is always returned to one end side of the guide rail 4 in the free state. Furthermore, the scale 7 is not limited to an optical reflection scale, but may also be a light transmission scale, an electromagnetic scale, an electrical scale, a capacitance scale, a contact scale, etc. vessel unit 3
3 is of course also considered as a unit of this type. However, in the above embodiment, the present invention is applied to a three-dimensional measuring machine. However, the present invention is not limited to this, and can be applied to large-scale measuring machines such as two-dimensional measuring machines and shape measuring machines. In addition to measuring equipment]? Small measuring instruments such as f-so, dial guno, etc., or independent length measuring instruments that measure linear movement, such as linear scales (trademark), and sliding parts of machine tools, etc. This method can also be applied to measuring the amount of displacement of two objects that can be moved relative to each other in a linear direction. In addition, the application form may be such that the guide rail 4 side, which is the skin 1 member, is fixed or movable, as long as it can be moved relative to the measuring head support member 9, which is the second member.

上述のように本発明によれば、スケールの保護を有効に
行なえるとともに、第1、第2部洞の摺動も円滑で、か
つ、組立、分解も容易なスケールの保護装置を提供でき
るという効果がある。
As described above, according to the present invention, it is possible to provide a scale protection device that can effectively protect the scale, allows smooth sliding of the first and second part cavities, and is easy to assemble and disassemble. effective.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明を三次元測定機に適用した一実施例を示
す一部切欠き斜視図、第2図はその平in1図、第3図
は本実施例の支持ブロック内の概略構成を示す第4図I
II −III線に沿う拡大断面図、第4図は同じく支
持ブロック内の概略構成を示す4tli I+、l’を
面図、第5図は本実施例のショックアプゾーパ内う断面
図である。 1・・ノI(台、4・・・第1部材としての案内レール
、7・・・スケール、8・・スケール保護装置、9・・
・第2部月としての測定子支持部材、20・・・ショッ
クアブゾーパ、22・・・支持ブロック、23・・ロー
ラ、24・・支持軸、25・・・第1の円筒部材として
のス波−サ、26・・・第2の円筒部材としての糸巻状
カラー、27・・巻取装置、33・・・変位検出ユニッ
ト、37・・・移動子。 代理人 弁理士 木 下 實 三 (ほか1名) 第1図 ム 第2図
FIG. 1 is a partially cutaway perspective view showing an embodiment in which the present invention is applied to a coordinate measuring machine, FIG. Figure 4 I shows
FIG. 4 is an enlarged sectional view taken along the line II-III, FIG. 4 is a side view of 4tli I+, l' showing the schematic structure inside the support block, and FIG. 5 is a sectional view of the inside of the shock absorber of this embodiment. . 1... No I (base, 4... Guide rail as the first member, 7... Scale, 8... Scale protection device, 9...
・Measure head support member as the second part, 20... shock absorber, 22... support block, 23... roller, 24... support shaft, 25... as first cylindrical member Wave sensor, 26... A thread-like collar as a second cylindrical member, 27... Winding device, 33... Displacement detection unit, 37... Mover. Agent: Patent attorney Minoru Kinoshita (and 1 other person) Figure 1 - Figure 2

Claims (1)

【特許請求の範囲】 (+、)  第1部材に固定されたスケールと、第1部
材に相対変位可能にされた第2部材に取付けられ第1、
第2部材の相対変位量をスケールと協働して検出する変
位検出ユニットとを備えた機器に設けられるスケールの
保護装置であって、一端が第1部材側に取付けられると
ともに、他端が第2部材(1111に設けられた巻取装
置に巻取り可能にきれ、成されたことを特徴とするスケ
ールの保護装置。 (2、特許請求の範囲第1項において、前記巻取装置は
、第2部材に回転可能に取付けられた円筒部材に帯状定
圧ばねの他端を奉伺け、この帯状定圧ばねの巻込み特性
により自動巻取可能に構成されたことを%徴とするスケ
ールの保護装置。 (3)特許請求の範囲第2項において、前記円筒部材は
、第2部材に取付けられ第1部材に沿って転勤するロー
ラの支持軸に回転自在に装着されたことを%徴とするス
ケールの保護装置。 (4)特許請求の範囲第2項または第3項において、前
記帯状定圧ばねは自由状態における線巻内径が円筒部材
の外径よりも小とされたことを特徴とするスケールの保
護装置。
[Claims] (+,) A scale fixed to a first member; a first scale attached to a second member movable relative to the first member;
A protection device for a scale provided in a device equipped with a displacement detection unit that detects the amount of relative displacement of a second member in cooperation with the scale, wherein one end is attached to the first member side and the other end is attached to the first member side. A scale protection device characterized in that it can be wound up on a two-member winding device (1111). A scale protection device characterized by having the other end of a band-shaped constant pressure spring placed on a cylindrical member rotatably attached to two members, and configured to be able to automatically wind up due to the winding characteristics of the band-shaped constant pressure spring. (3) In claim 2, the scale is characterized in that the cylindrical member is rotatably mounted on a support shaft of a roller that is attached to a second member and moves along the first member. (4) The scale according to claim 2 or 3, wherein the belt-shaped constant pressure spring has an inner diameter of the wire winding in a free state smaller than an outer diameter of the cylindrical member. Protective device.
JP18875182A 1982-10-27 1982-10-27 Protecting device of scale Granted JPS5979108A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP18875182A JPS5979108A (en) 1982-10-27 1982-10-27 Protecting device of scale
US06/539,361 US4551919A (en) 1982-10-27 1983-10-06 Measuring instrument
DE3338752A DE3338752C2 (en) 1982-10-27 1983-10-25 Measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18875182A JPS5979108A (en) 1982-10-27 1982-10-27 Protecting device of scale

Publications (2)

Publication Number Publication Date
JPS5979108A true JPS5979108A (en) 1984-05-08
JPH0129403B2 JPH0129403B2 (en) 1989-06-09

Family

ID=16229129

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18875182A Granted JPS5979108A (en) 1982-10-27 1982-10-27 Protecting device of scale

Country Status (1)

Country Link
JP (1) JPS5979108A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03115807U (en) * 1990-03-12 1991-12-02
WO2012066756A1 (en) * 2010-11-15 2012-05-24 株式会社アルバック Probe measuring device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03115807U (en) * 1990-03-12 1991-12-02
WO2012066756A1 (en) * 2010-11-15 2012-05-24 株式会社アルバック Probe measuring device
JP5247934B2 (en) * 2010-11-15 2013-07-24 株式会社アルバック Stylus measuring device

Also Published As

Publication number Publication date
JPH0129403B2 (en) 1989-06-09

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