ダイアフラム式空気マイクロメータを応用した表面あらさ測定機

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タイトル別名
  • Roughness Tester Using Diaphragm Type Air-Micrometer
  • ダイアフラムシキ クウキ マイクロメータ オ オウヨウ シタ ヒョウメンア ラ サ ソクテイキ

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抄録

Two types of roughness testers using a "diaphragm type air-micrometer" were made for trial ; one was designed for measuring the roughness of the inner surface of the engine cylinder installed on a vehicle, and the other was so designed as to be able to measure the roughness of both vertical and horizontal surfaces of large size vehicle parts. The mechanism of this tester is as follows : The displacement of the tracer point which scans over the surface to the measured is changed into a pressure indicated by an air-micrometer and this pressure acts on air chambers. A small magnetic needle rotates correspondingly with an action of the air chambers. The torque of the magnetic needle is amplified by means of an air type torque amplifier coupled with the magnetic needle magnetically. Thus roughness is recorded with a recording pen operated by the air type torque amplifier. With the surface profile assumed to be sinusoidal, the characteristics of this tester were discussed. Various tests show that roughness can be accurately recorded by this tester.

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