Design of a torque standard component of an integrated calibration equipment

2018 5th International Conference on Advanced Engineering and Technology

工业技术（总论）

关键词: Automated calibration;    Calibration equipment;    Coverage factors;    Gross weight;    Lightweight design;    On-site calibration;    Torque standards;    Torque wrenches;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/507/1/012007/pdf
DOI  :  10.1088/1757-899X/507/1/012007

学科分类：工业工程学

来源: IOP

【 摘 要 】

This paper describes the establishment of a torque standard component (TSC) of an integrated calibration equipment (ICE). The TSC was developed for on-site automated calibration of several hand torque wrenches (like as setting type torque wrenches, indicating type torque wrenches and hand torque screwdrivers). Based on integrated idea and lightweight design, The TSC was optimized to weight only 5 kg, which saved much room, reduced gross weight of the ICE itself, and brought great benefit to on-site calibration. The relative expanded uncertainty of torque realized by the TSC was estimated to be 0.9% from 0.5 Nm to 60 Nm, with the coverage factor k=2. Performance of the TSC was examined by carrying comparison experiments with a reference torque standard (RTS) at our lab. As a result, torque realized by the TSC was shown to be equivalent to that realized by the RTS within the calmed uncertainties.