Uncertainty evaluation of a 10N·m dead weight torque standard machine and comparison with a 1kN·m dead weight torque standard machine

Nishino, Atsuhiro; Ogushi, Koji; Ueda, Kazunaga

doi:10.1016/j.measurement.2013.11.033

Cited by 18 publications

(14 citation statements)

References 3 publications

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“…The authors also evaluated the effective degree of freedom and confirmed sufficient large number. w tsm has been evaluated as 3.3 × 10 -5 [7]. w c_rtd is calculated as:…”

Section: Uncertainty Of the Calibration Resultsmentioning

confidence: 99%

“…A newly developed deadweight-type TSM with a rated capacity of 10 N·m was used (10-N·m-DWTSM) [7]. A picture of the machine is shown in Figure 2.…”

Section: Methodsmentioning

confidence: 99%

“…National torque standards at such a small range had not been established in many countries, so the development of a calibration chain for HTDs has not progressed so much until recently. At NMIJ, a new deadweight torque standard machine (10-N·m-DWTSM) that is rated for 10 cN·m to 1000 cN·m has been completed and calibration service in this range has begun to the industry [7]. This development has accelerated the establishment of a calibration chain for HTDs.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Direct Calibration Chain for Hand Torque Screwdrivers from the National Torque Standard

Ogushi¹,

Nishino²,

Maeda³

et al. 2015

ACTA IMEKO

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Hand torque screwdrivers are used for the fastening control of screws in almost all precise mechanical and electrical parts. This paper describes the realization of a direct calibration chain for hand torque screwdrivers traceable to the national torque standard. The calibration methods for a reference torque screwdriver using a primary torque standard machine, a torque screwdriver tester using the reference torque screwdriver, and hand torque screwdrivers using the torque screwdriver tester are described respectively. Uncertainty evaluation methods for each calibration level are also explained. The effectiveness of the calibration chain for hand torque screwdrivers could be demonstrated.

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“…The authors also evaluated the effective degree of freedom and confirmed sufficient large number. w tsm has been evaluated as 3.3 × 10 -5 [7]. w c_rtd is calculated as:…”

Section: Uncertainty Of the Calibration Resultsmentioning

confidence: 99%

“…A newly developed deadweight-type TSM with a rated capacity of 10 N·m was used (10-N·m-DWTSM) [7]. A picture of the machine is shown in Figure 2.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Direct Calibration Chain for Hand Torque Screwdrivers from the National Torque Standard

Ogushi¹,

Nishino²,

Maeda³

et al. 2015

ACTA IMEKO

Self Cite

View full text Add to dashboard Cite

show abstract

“…Thus, they were calibrated in only one direction in this study. Table 2 gives the calibration ranges and calibration and measurement capabilities (CMCs) of the torque standard machines (TSMs) at NMIJ [10]- [12]. Figure 4 shows a photograph of the TS5000R mounted on the 20-kN·m-DWTSM.…”

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

confidence: 99%

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

Nishino¹,

Ogushi²,

Ueda³

2017

ACTA IMEKO

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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.

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“…A new deadweight-type TSM with a rated capacity of 20 kN•m (20-kN•m-DWTSM(K)) is also being developed [2]. The National Metrology Institute of Japan (NMIJ) has also developed three DWTSMs, which have rated capacities of 10 N•m (10-N•m-DWTSM(J)) [3], 1 kN•m (1-kN•m-DWTSM(J)) [4], and 20 kN•m (20-kN•m-DWTSM(J)) [5]. [6].…”

Section: Introductionmentioning

confidence: 99%

Inter-laboratory comparison between NMIJ and KRISS of calibration capabilities for torque measuring devices in the range from 50 N·m to 2 kN·m

Ogushi¹,

Nishino²,

Ueda³

et al. 2017

ACTA IMEKO

Self Cite

View full text Add to dashboard Cite

Uncertainty evaluation of a 10N·m dead weight torque standard machine and comparison with a 1kN·m dead weight torque standard machine

Cited by 18 publications

References 3 publications

Direct Calibration Chain for Hand Torque Screwdrivers from the National Torque Standard

Direct Calibration Chain for Hand Torque Screwdrivers from the National Torque Standard

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

Inter-laboratory comparison between NMIJ and KRISS of calibration capabilities for torque measuring devices in the range from 50 N·m to 2 kN·m

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