MEASURING DEVICE AND RADIAL KEY MANUFACTURING METHOD

• Main Authors: YAMATAKE MASAYUKI, KASAI KENICHI, MINAMIYAMA AKIO, TADA KOHEI, KOBAYASHI YUKI
• Format: Patent
• Language: English; Japanese
• Published: 11.11.2022
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR REACTORS; PHYSICS; TESTING

To provide a measuring device capable of measuring the dimensions of a narrow groove with high accuracy, and a manufacturing method of a radial key.SOLUTION: A measuring device includes a first measuring unit that includes a base provided in a groove of a measurement object and capable of moving in the extending direction of the groove, a first measurement terminal provided on the base and capable of protruding from the base to one inner side surface of the groove, a second measurement terminal provided at a position spaced forward in the direction of movement of the base from the first measurement terminal in the base, and protruding from the base to the other inner surface of the groove, and a retraction mechanism that retracts the second measurement terminal protruding from the base into the base.SELECTED DRAWING: Figure 4 【課題】狭隘な溝部の寸法を高い精度のもとで計測することが可能な計測装置、及びラジアルキーの製造方法を提供する。【解決手段】計測装置は、計測対象物の溝部内に設けられて、溝部の延在方向に進行可能な基部と、基部に設けられて、基部から溝部の一方の内側面に突出可能な第一計測端子と、基部における第一計測端子よりも基部の進行方向前方側に離間した位置に設けられて、基部から溝部の他方の内側面に突出可能な第二計測端子と、基部から突出した第二計測端子を基部に引き込む引き込み機構と、を有する第一計測部を備える。【選択図】図４