JPH1038502A - Angle measuring tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily measure the relative angle between the holes of a work by attaching a conical pin, an arm on which the center of another conical pin slides along the extension line of O-degree line, and a second arm which turns around the angle datum point to the datum point of a plate graduated in angles and providing a third conical pin the center of which slides on a line passing through the datum point. SOLUTION: When conical pins 3, 4, and 7 are successively tightly inserted into three holes A, B, and C provided on the circumference of a circle, a relation, θ=2α, is obtained between the central angle α of the circle against the arc BC and the angle θ between the lines AC and AB. In addition, when the distances to the holes A and B from their common datum point are fixed and the pins 4 and 7 are respectively tightly inserted into the holes A and B by setting the distances between the pins 3 and 4 and between the pins 3 and 7 at the distances between the hole A and its datum point and between the hole B and its datum point, the angle of the holes A and B against the datum point can be found.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】上作物で複数個の穴のあいている
ものゝ関係角度を、簡便に測定できる角度測定具であ
る。BACKGROUND OF THE INVENTION An angle measuring instrument which can easily measure a relation angle of an upper crop having a plurality of holes.

【０００２】[0002]

【従来の技術】複数個の穴のあいているものゝ関係角度
を測定するには、高額な三次元測定機を用いれば正確な
値を求めることはできるが、簡便にある程度の精度で測
定するには分度器に類したものしかない。しかし、分度
器では、まず穴の中心を求めることがむずかしいので精
度は期待できない。2. Description of the Related Art An accurate value can be obtained by using an expensive three-dimensional measuring machine to measure a relation angle when a plurality of holes are provided. However, measurement is easily performed with a certain degree of accuracy. Has nothing but a protractor. However, with a protractor, it is difficult to find the center of the hole first, so that accuracy cannot be expected.

【０００３】[0003]

【発明が解決しようとする課題】あいている穴の中心を
簡単に求められて、複数個の穴の関係角度を簡単に測定
でき、さらにある程度の精度が得られる安価な測定具が
求めれている。There is a need for an inexpensive measuring tool that can easily determine the center of an open hole, easily measure the relationship angle between a plurality of holes, and obtain a certain degree of accuracy. .

【０００４】[0004]

【課題を解決するための手段】[Means for Solving the Problems]

（イ）角度を目盛した板（１）の角度の基準点（２）
に、円錐ピン（３）をつける。 （ロ）０°の延長線上を、円錐ピン（４）の中心がスラ
イドする腕（５）をつける。 （ハ）基準点（２）を中心に回転するもう一個の腕
（６）をつけ、その腕に基準点（２）を通る線上を、円
錐ピン（７）の中心がスライドする。(A) Angle reference point (2)
Then, attach a conical pin (3). (B) An arm (5) on which the center of the conical pin (4) slides is attached on an extension line of 0 °. (C) The other arm (6) rotating around the reference point (2) is attached, and the center of the conical pin (7) slides on a line passing through the reference point (2) on the arm.

【０００５】[0005]

【作用】[Action]

（イ）同円周上に３個の穴があいている場合（図２） ３個の穴Ａ，Ｂ，Ｃに、それぞれ順に円錐ピン３，４，
７を穴によく密着するように挿入して、その時の角度を
読めば、その値αは、同円周の円の中心に対して穴Ｂ，
Ｃの角度θとの関係は θ＝２α となり、θの角度を求めることが出来る。 （ロ）２個の穴の共通の基準点からの距離がそれぞれ定
まっている場合 穴Ａの基準点からの距離を円錐ピン３と４にとり、さら
に穴Ｂの基準点からの距離を円錐ピン３と７にとり、円
錐ピン４をＡ穴に、７をＢ穴にピンが穴によく密着する
ように挿入すれば、穴Ａ，Ｂの基準点に対しての角度を
求めることが出来る。(B) When three holes are formed on the same circumference (FIG. 2) Conical pins 3, 4, and 4 are sequentially provided in three holes A, B, and C, respectively.
7 is inserted into the hole so that it is in close contact with the hole, and the angle at that time is read.
The relationship between C and the angle θ is θ = 2α, and the angle of θ can be obtained. (B) When the distances of the two holes from the common reference point are fixed, the distance from the reference point of the hole A is set to the conical pins 3 and 4, and the distance from the reference point of the hole B is set to the conical pin 3. If the conical pin 4 is inserted into the hole A and the pin 7 is inserted into the hole B so that the pins are in close contact with the holes, the angles of the holes A and B with respect to the reference point can be obtained.

【０００６】[0006]

【実施例】角度を目盛した板（１）の角度の基準点
（２）に、円錐ピン（３）をつける。その角度の０°の
延長線上を円錐ピン（４）の中心がスライドする腕
（５）をつける。基準点（２）を中心に回転するもう１
個の腕（６）をつけ、その腕に基準点（２）を通る線上
を、円錐ピン（７）の中心がスライドする。以上が基本
的な実施例であるが、それに次にあげる機構を追加する
ことができる。 （イ）円錐ピン３，４，７を、測定する穴の大きに応じ
て異った大きさの円錐ピンに交換できるようにする。 （ロ）基準点（２）からの距離を、腕５，６にそれぞれ
目盛をつける。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A conical pin (3) is provided at a reference point (2) of an angle of a plate (1) with a graduated angle. An arm (5) on which the center of the conical pin (4) slides on an extension line of 0 ° of the angle is attached. Another rotation around the reference point (2)
The arm (6) is attached, and the center of the conical pin (7) slides on a line passing through the reference point (2) on the arm. The above is the basic embodiment, but the following mechanisms can be added. (A) The conical pins 3, 4, and 7 can be replaced with conical pins having different sizes according to the size of the hole to be measured. (B) The distance from the reference point (2) is marked on the arms 5 and 6, respectively.

【０００７】[0007]

【発明の効果】工作物の穴のあいているものゝ寸法測定
では、三次元測定機などの高価な器具を用いれば、簡単
であるが、工作物の加工中などのように、測定機まで移
動できないで機械につけたまゝで、ある程度の精度で測
定できる。従来の分度器では穴の中心を確定できないの
で、より精度の高い測定できる。また、加工中でなくて
も、高価な三次元測定機などがない場合にも、上記した
ように従来の分度器よりも精度よく簡単に測定できる。
また、角度目盛の数値を実際の目盛の倍の値も記入すれ
ば、作用の項の（イ）の場合に角度を直読できるように
なる。[Effects of the Invention] Workpieces with perforated holes ゝ In dimensional measurement, it is easy to use an expensive instrument such as a three-dimensional measuring machine. It can be measured with a certain degree of accuracy, even if it cannot be moved and remains attached to the machine. Since the center of the hole cannot be determined with the conventional protractor, measurement can be performed with higher accuracy. In addition, even if there is no expensive three-dimensional measuring machine or the like even during processing, as described above, measurement can be performed more easily and more accurately than a conventional protractor.
Also, if the numerical value of the angle scale is also written as a value twice as large as the actual scale, the angle can be directly read in the case of (a) in the operation section.

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

【図１】本発明の斜視図FIG. 1 is a perspective view of the present invention.

【図２】本発明の同円周上に３個以上の穴があるとき
の、同円周の中心に対する各穴の角度測定原理図FIG. 2 is a diagram illustrating the principle of measuring the angle of each hole with respect to the center of the circumference when there are three or more holes on the circumference according to the present invention.

【符号の説明】[Explanation of symbols]

１：角度を目盛した板 ２：角度の基準点 ３：角度の基準点の円錐ピン ４：角度０°の延長線をスライドする円錐ピン ５：４の円錐ピンがスライドする腕 ６：基準点２を中心に回転する腕 ７：基準点２を通る線上をスライドする円錐ピン ８：基準点２からの円錐ピン４，７の位置を示す目盛 1: Angle scale plate 2: Angle reference point 3: Angle reference point conical pin 4: Conical pin sliding on extension of angle 0 ° 5: Arm on which conical pin of 4 slides 6: Reference point 2 7: Conical pin sliding on a line passing through reference point 2 8: Scale indicating the position of conical pins 4 and 7 from reference point 2

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】（イ）角度を目盛した板（１）の角度の基
準点（２）に、円錐ピン（３）をつける。 （ロ）０°の延長線上を、円錐ピン（４）の中心がスラ
イドする腕（５）をつける。 （ハ）基準点（２）を中心に回転する、もう一個の腕
（６）をつけ、その腕に基準点（２）を通る線上を、円
錐ピン（７）の中心がスライドする。 上記で構成する角度測定具。(1) A conical pin (3) is attached to a reference point (2) of an angle of a plate (1) on which an angle is graduated. (B) An arm (5) on which the center of the conical pin (4) slides is attached on an extension line of 0 °. (C) Attach another arm (6) that rotates about the reference point (2), and the center of the conical pin (7) slides on a line passing through the reference point (2) on that arm. An angle measuring device configured as described above.