JPH0438248Y2 - - Google Patents
Info
- Publication number
- JPH0438248Y2 JPH0438248Y2 JP15751384U JP15751384U JPH0438248Y2 JP H0438248 Y2 JPH0438248 Y2 JP H0438248Y2 JP 15751384 U JP15751384 U JP 15751384U JP 15751384 U JP15751384 U JP 15751384U JP H0438248 Y2 JPH0438248 Y2 JP H0438248Y2
- Authority
- JP
- Japan
- Prior art keywords
- carriage
- lever
- brake shoe
- friction force
- coordinate measuring
- 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
Links
- 239000012530 fluid Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Landscapes
- A Measuring Device Byusing Mechanical Method (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Description
【考案の詳細な説明】
この考案は、座標測定機等のキヤリツジを移動
させる機構において、案内面に沿つて走行する移
動体の摩擦力の調整装置に係るものである。[Detailed Description of the Invention] This invention relates to a device for adjusting the frictional force of a moving body traveling along a guide surface in a mechanism for moving a carriage such as a coordinate measuring machine.
キヤリツジを手動操作および自動駆動の２方式
によつて選択的に移動可能とする場合、手動時に
は、軽快な走行による操作性の向上をはかり、自
動駆動時には、動きの安定性および位置決め精度
の向上、さらに、位置決め時間の短縮をはかるた
めに、手動操作時と、自動操作時において、キヤ
リツジと案内面との間の摩擦力を変更すること、
すなわち、手動操作の際は、摩擦抵抗を弱く、自
動駆動時には強くすることが望まれる。 When the carriage is selectively movable by two methods, manual operation and automatic drive, the manual mode aims to improve operability through nimble running, while the automatic drive mode improves stability of movement and positioning accuracy. Furthermore, in order to reduce positioning time, the frictional force between the carriage and the guide surface can be changed during manual operation and automatic operation.
That is, it is desired that the frictional resistance be weak during manual operation and strong during automatic drive.
従来、自動駆動用の座標測定機においては、動
きの安定性と位置決め精度の確保をはかるため
に、Ｘ、Ｙ、Ｚの各キヤリツジとそれぞれの案内
面との間にブレーキを設け、キヤリツジと案内面
との摩擦力を強くする機構が用いられてきた。し
かし、手動操作の際は、自動駆動時と異なり、細
長いＺ軸の先端部に取り付けられるプローブ（測
子）を手で持つて動かすので，摩擦力が強いとＺ
軸のブレーキ力によるたわみ誤差が生じ、かつキ
ヤリツジを軽く、スムーズに動かせない等の障害
があるため、手動操作、自動駆動の共用がむずか
しいという問題があつた。また、座標測定機で
は、一つの測定点から次の測定点まで、Ｘ，Ｙ，
Z3軸方向の移動を同時に行なうことが多く、特
に手動測定の場合は、移動の軽快さ、安定性およ
び操作性を阻害しないためには各軸方向の移動抵
抗を同一にすることが要請されるが、各軸キヤリ
ツジの質量が異なるため、慣性力の影響が等しく
なく、従つて、移動抵抗が均一でないとうい欠点
があつた。 Conventionally, in automatic drive coordinate measuring machines, in order to ensure stability of movement and positioning accuracy, brakes are provided between each of the X, Y, and Z carriages and their respective guide surfaces. Mechanisms that increase the frictional force with surfaces have been used. However, unlike when operating automatically, during manual operation, the probe attached to the tip of the elongated Z-axis is held and moved, so if the frictional force is strong, the Z-axis
There was a problem that it was difficult to use both manual operation and automatic drive because there was a deflection error due to the braking force of the shaft and there were obstacles such as the inability to move the carriage lightly and smoothly. Also, with a coordinate measuring machine, from one measurement point to the next, X, Y,
Movement in the Z3-axis direction is often performed at the same time, and especially in the case of manual measurement, it is required that the movement resistance in each axis direction be the same in order not to impede the lightness of movement, stability, and operability. However, since the mass of each shaft carriage is different, the influence of inertial force is not equal, and therefore the movement resistance is not uniform.
本考案は、上記のような問題点の解決を意図し
たもので、極めて簡単な機構により、案内面に対
するブレーキシユーの押圧力をその方向と逆方向
の力を作用させて減殺し、これを無段階に調整で
きる装置を提供するものである。 The present invention is intended to solve the above problems, and uses an extremely simple mechanism to reduce the pressing force of the brake shoe against the guide surface by applying a force in the opposite direction. This provides a device that can be adjusted steplessly.
以下、図面を参照に、本考案の一実施例につい
て説明する。図は本実施例の要部を示す説明図で
ある。図において、１は基台に設けられた案内
面、２は案内面との間に例えば図示しないエアベ
アリングまたはローラ等を介在させ、走行可能に
設けられたキヤリツジである。このキヤリツジ２
にはブレーキ機構の本体３が取り付けられ、本体
３の、図において下部に、がたのない薄肉弾性支
点４を介してレバー５が形成されている。ブレー
キシユー６はレバー５の先端近くの案内面１との
間に設けられ、レバー５のブレーキシユー６の取
付面の反対側の面と本体３の間に、ブレーキシユ
ー６を押圧するための圧縮ばね７が取り付けられ
ている。 An embodiment of the present invention will be described below with reference to the drawings. The figure is an explanatory diagram showing the main parts of this embodiment. In the figure, 1 is a guide surface provided on a base, and 2 is a carriage that is movably provided with, for example, an air bearing or roller (not shown) interposed between the guide surface and the guide surface. This carriage 2
A main body 3 of the brake mechanism is attached to the main body 3, and a lever 5 is formed at the lower part of the main body 3 via a thin elastic fulcrum 4 without play. The brake shoe 6 is provided between the guide surface 1 near the tip of the lever 5, and presses the brake shoe 6 between the surface of the lever 5 opposite to the mounting surface of the brake shoe 6 and the main body 3. A compression spring 7 is attached for this purpose.
また、レバー５の先端部の軸止点８に、本体３
に取着されたエアシリンダ９のピストンロツド１
０が接続され、エアシリンダ９の下室には、例え
ば別置された調圧弁１２および方向制御弁１１を
通して供給され加圧空気の導入口が設けられてい
る。 Also, the main body 3 is attached to the shaft stop 8 at the tip of the lever 5.
Piston rod 1 of air cylinder 9 attached to
0 is connected, and the lower chamber of the air cylinder 9 is provided with an inlet for pressurized air supplied through, for example, a separately placed pressure regulating valve 12 and a direction control valve 11.
以上の構成において、キヤリツジ２をモータ等
により自動駆動する際には、方向制御弁１１を作
動させて、シリンダ９への加圧空気の供給を遮断
するか調圧弁を調整することにより、ブレーキシ
ユー６の案内面１に対する押圧力F1を圧縮バネ
７の反発力Fsまたは、近似値とする。（F1≒Fs）
この時の摩擦力f1はf1（μFs（μは摩擦係数）とな
り、ブレーキがほぼフルに作用する。 In the above configuration, when the carriage 2 is automatically driven by a motor or the like, the brake system can be operated by operating the directional control valve 11 to cut off the supply of pressurized air to the cylinder 9 or by adjusting the pressure regulating valve. Let the pressing force F 1 of the user 6 against the guide surface 1 be the repulsive force F s of the compression spring 7 or an approximate value. (F 1 ≒ F s )
At this time, the frictional force f 1 becomes f 1 (μF s (μ is the friction coefficient), and the brake is almost fully applied.
一方、手動操作時には、方向制御弁１１の切り
換えてシリンダ９に加圧空気を供給し、ブレーキ
シユー６の案内面１に対する押圧力Fsを減少させ
る力Fa（Faは供給加圧空気の圧力×ピストンの有
効受圧面積）を作用させ、ブレーキシユーの押圧
力F2を、F2＝Fs−Faと減少させる。従つて、こ
の時の摩擦力（f2）はf2＝μ（Fs−Faとなり、ブ
レーキ力が軽減される。 On the other hand, during manual operation, the directional control valve 11 is switched to supply pressurized air to the cylinder 9, and the force F a that reduces the pressing force F s of the brake shoe 6 against the guide surface 1 (F a is the supplied pressurized air pressure × effective pressure receiving area of the piston), and the pressing force F 2 of the brake shoe is reduced to F 2 =F s −F a . Therefore, the frictional force (f 2 ) at this time becomes f 2 =μ(F s −F a ) , and the braking force is reduced.
座標測定機のように、Ｘ，Ｙ，Z3軸方向移動
の場合には、前記実施例の装置を各軸のキヤリツ
ジに取り付けて用いるが、その際、各軸の摩擦力
をほぼ均一にするためには、各軸に用いる圧縮ば
ね７を各軸キヤリツジの重量に適合したばね定数
の異なるものを適宜、選択して用いる。この場
合、調圧弁は加圧空気源の供給側に１個付設する
だけでよい。また、各軸の本調整装置に付設され
る方向制御弁１１の前に専用の調圧弁を設け、供
給空気圧を調整することによつても実施可能であ
る。 When moving in the three axes of X, Y, and Z, such as a coordinate measuring machine, the device of the above embodiment is attached to a carriage for each axis. In this case, the compression springs 7 used for each shaft are appropriately selected and used with different spring constants suitable for the weight of the carriage for each shaft. In this case, only one pressure regulating valve may be provided on the supply side of the pressurized air source. Alternatively, the present invention can be implemented by providing a dedicated pressure regulating valve in front of the directional control valve 11 attached to the main adjustment device for each axis and adjusting the supply air pressure.
なお、上記説明の実施例においては、レバー５
の支点を薄肉弾性支点としたが、これは簡易、安
価な好適例で、ピポツト等の他の支点を用いても
よく、シリンダへの加圧媒体は空気以外の他の流
体を用いても同様な機能を発揮できる。 In addition, in the embodiment described above, the lever 5
The fulcrum of the cylinder is a thin elastic fulcrum, but this is a simple and inexpensive preferred example. Other fulcrums such as a pivot may also be used, and other fluids other than air may be used as the pressurizing medium for the cylinder. can perform functions.
以上説明したように、本考案の装置によれば、
自動駆動時においては、摩擦力を大きくできるの
で微小振動が抑制でき、動的な安定性、および位
置決め精度が向上し、手動操作時においては、摩
擦力を適宜な大きさに減殺できるので、動きの安
定性と操作性の向上および位置決め精度の確保が
できるとともに、多軸の場合は、各軸キヤリツジ
の慣性の相違による影響を抑止することができ、
従来困難とされてきた自動駆動方式と手動操作方
式の兼用が可能となる。また、シリンダ、ピスト
ン方式によるため発熱がなく、測定機の場合は特
に、精度への影響が少なく、シリンダへの供給媒
体の圧力を調節することにより、摩擦力の無段階
調整ができる等、数々のすぐれた効果が得られ
る。 As explained above, according to the device of the present invention,
During automatic drive, the friction force can be increased, suppressing minute vibrations, improving dynamic stability and positioning accuracy, and during manual operation, the friction force can be reduced to an appropriate amount, reducing movement. In addition to improving stability and operability and ensuring positioning accuracy, in the case of multiple axes, it is possible to suppress the effects of differences in inertia of each axis carriage.
This makes it possible to use both an automatic drive system and a manual operation system, which was previously considered difficult. In addition, since it uses a cylinder and piston system, there is no heat generation, which has little effect on accuracy, especially in the case of measuring instruments, and the friction force can be adjusted steplessly by adjusting the pressure of the medium supplied to the cylinder. Excellent effects can be obtained.
図は、本考案の実施例の要部を示す説明図。
１……案内面、２……キヤリツジ、４……支
点、５……レバー、６……ブレーキシユー、７…
…圧縮ばね、９……シリンダ、１０……ピストン
ロツド、１１……方向制御弁。
The figure is an explanatory diagram showing main parts of an embodiment of the present invention. 1... Guide surface, 2... Carriage, 4... Fulcrum, 5... Lever, 6... Brake shoe, 7...
...Compression spring, 9...Cylinder, 10...Piston rod, 11...Direction control valve.
Claims (1)
定機のキヤリツジと該案内面との間の摩擦力を、
キヤリツジの手動操作又は自動駆動に対応して切
り換える座標測定機のキヤリツジの摩擦力調整装
置に於いて、 前記キヤリツジに取り付けられた摩擦力調整装
置本体と、 摩擦力調整装置本体に揺動自在に設けられたレ
バーと、 レバーの前記案内面と対向する面に固着された
ブレーキシユーと、 摩擦力調整装置本体と前記レバーとの間に設け
られ、該レバーを前記案内面方向に付勢して前記
ブレーキシユーを案内面に押圧当接させるばね部
材と、 摩擦力調整装置本体と前記レバーとを連結し、
手動操作又は自動駆動の切り換えに応じて流体が
供給され、手動操作時には自動駆動時よりもブレ
ーキシユーの押圧力を減殺する方向にレバーを所
定量揺動させる流体シリンダと、 から成ることを特徴とする座標測定機のキヤリツ
ジの摩擦力調整装置。[Claim for Utility Model Registration] The frictional force between the carriage of the coordinate measuring machine moving along the guiding surface of the coordinate measuring machine and the guiding surface,
In a friction force adjustment device for a carriage of a coordinate measuring machine that is switched in response to manual operation or automatic drive of the carriage, the friction force adjustment device body is attached to the carriage, and the friction force adjustment device body is swingably provided. a brake shoe fixed to a surface of the lever opposite to the guide surface; and a brake shoe provided between the friction force adjusting device main body and the lever and urging the lever in the direction of the guide surface. a spring member that presses the brake shoe into contact with a guide surface; a friction force adjusting device main body and the lever;
A fluid cylinder that is supplied with fluid in response to switching between manual operation and automatic drive, and that swings a lever by a predetermined amount in a direction that reduces the pressing force of the brake shoe when operated manually compared to when the brake shoe is automatically driven. A friction force adjustment device for the carriage of a coordinate measuring machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15751384U JPH0438248Y2 (en) | 1984-10-18 | 1984-10-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15751384U JPH0438248Y2 (en) | 1984-10-18 | 1984-10-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6172614U JPS6172614U (en) | 1986-05-17 |
| JPH0438248Y2 true JPH0438248Y2 (en) | 1992-09-08 |
Family
ID=30715505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15751384U Expired JPH0438248Y2 (en) | 1984-10-18 | 1984-10-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0438248Y2 (en) |
-
1984
- 1984-10-18 JP JP15751384U patent/JPH0438248Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6172614U (en) | 1986-05-17 |
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