Range expansion of the reference torque wrench calibration service to 5kNm at NMIJ

Ogushi, Koji; Nishino, Atsuhiro; Maeda, Koji; Ueda, Kazunaga

doi:10.1016/j.measurement.2012.01.016

Cited by 12 publications

(10 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, the square drive was kept attached to the square hole adapter all the time during the calibrations. The details of the procedure have been described in [1]. The installation procedure of the counterbalance weights is determined to each RTW based on its weight and shape.…”

Section: Difference Of the Combination Of Lever Angles When Changing mentioning

confidence: 99%

“…Figure 1 shows the SI traceability system of torque used in Japan [1], which was proposed by the National Metrology Institute of Japan (NMIJ) in cooperation with the Japanese industry. The reference standards for pure torque and torque wrench in firstgrade accredited laboratories are torque measuring devices (TMDs) and reference torque wrenches (RTWs), respectively.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Confirmation of calibration capability of low-nominal capacity reference torque wrenches at NMIJ

Nishino¹,

Ogushi²,

Ueda³

2017

ACTA IMEKO

Self Cite

View full text Add to dashboard Cite

The calibration procedure for a reference torque wrench (RTW), which is a torque transducer in the form of a torque wrench, is based on the JMIF-016 (TTSG-W102) technical guideline in Japan. The mounting position of an RTW is set to three directions (0°, 120°, and 240°; case 1) when it is calibrated using dead weight torque standard machines (DWTSMs) with rated capacities of 1 kN·m (1-kN·m-DWTSM) and 20 kN·m (20-kN·m-DWTSM). However, the mounting position is set to three different directions (0°, 90° and 270°; case 2) when the 10-N·m-DWTSM is used. In this study, the effect of the difference of the RTW mounting position on the calibration results was investigated. Next, to confirm the equivalence of the RTW calibration capabilities of the 10-N·m- and 1-kN·m-DWTSMs, they were compared using two low-nominal capacity RTWs. The results obtained in cases 1 and 2 showed good agreement within the uncertainties. The recommended RTW calibration procedure is based on case 1. But, if an RTW cannot be mounted in the 120° and 240° directions because of the space problem, case 2 can be adopted as the RTW calibration procedure. The RTW calibration capability of the 10-N·m-DWTSM was found to be equivalent to that of the 1-kN·m-DWTSM in the range of 5 N·m to 10 N·m.

show abstract

Section: Difference Of the Combination Of Lever Angles When Changing mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Confirmation of calibration capability of low-nominal capacity reference torque wrenches at NMIJ

Nishino¹,

Ogushi²,

Ueda³

2017

ACTA IMEKO

Self Cite

View full text Add to dashboard Cite

show abstract

“…5 shows the loading cycles adopted for the calibrations with the 10-N m-DWTSM. The loading cycles were based on JMIF-016 (TTSG-W102) [4], which has been adopted as the calibration procedure for medium to large capacity RTWs [2]. In particular, the outline of the method for changing the mounting position of the torque transducer is described as follows (translated from Japanese):…”

Section: Experimental Conditionsmentioning

confidence: 99%

“…1 [2]. The reference standards used in first-grade accredited laboratories are TMDs and reference torque wrenches (RTWs).…”

Section: Introductionmentioning

confidence: 99%

“…In general, it is known that the rod acting as the counter loading point can reduce any parasitic forces on the torque loading, when it can move smoothly in the rotational and thrust directions [2]. We adopted an aerostatic shaft with a collar as the counter loading point and investigated the effect of the aerostatic shaft on the calibration results of small-rated-capacity RTWs.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Calibration of reference torque wrenches using a 10Nm deadweight torque standard machine

2015

Self Cite

View full text Add to dashboard Cite

Design of a new dynamic torque generation machine based on the principle of Kibble balance

Hamaji

Nishino

Ogushi

2021

Measurement: Sensors

View full text Add to dashboard Cite

Range expansion of the reference torque wrench calibration service to 5kNm at NMIJ

Cited by 12 publications

References 1 publication

Confirmation of calibration capability of low-nominal capacity reference torque wrenches at NMIJ

Confirmation of calibration capability of low-nominal capacity reference torque wrenches at NMIJ

Calibration of reference torque wrenches using a 10Nm deadweight torque standard machine

Design of a new dynamic torque generation machine based on the principle of Kibble balance

Contact Info

Product

Resources

About