Paper
15 November 2011 The Rockwell hardness primary national machine according to the new international definition
Li He, Feng Zhang
Author Affiliations +
Proceedings Volume 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation; 83211I (2011) https://doi.org/10.1117/12.904619
Event: Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 2011, Yunnan, China
Abstract
According to the new definition of Rockwell hardness given by the International Working Group on Hardness (WGH), the new Rockwell hardness national primary standard machine in the National Institute of Metrology is presented in this paper. A tooth-belt is used to reduce the vibration. The loading monitor system, the PLC control system and the laser measuring system are designed to raise the measuring precision. Experiments show that the Rockwell hardness standard machine based on this method can meet the requirements of the new definition and accomplish a high stability and measuring precision.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Li He and Feng Zhang "The Rockwell hardness primary national machine according to the new international definition", Proc. SPIE 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 83211I (15 November 2011); https://doi.org/10.1117/12.904619
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KEYWORDS
Laser systems engineering

Photonic integrated circuits

Standards development

Control systems design

Sensors

Control systems

Servomechanisms

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