Fastener tightening method

Metal working – Method of mechanical manufacture – With testing or indicating

Patent

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Details

295251, B23Q 1700

Patent

active

051520460

ABSTRACT:
There is disclosed a constant-speed, fastener tightening method using a nut runner for setting the final tightened state of the fastener in terms of tightening torque, characterized in that the fastener is tightened by maintaining the rotative speed of the nut runner at a constant speed regardless of variations in tightening loads.

REFERENCES:
patent: 4095325 (1978-06-01), Hashimoto et al.
patent: 4104778 (1978-08-01), Vliet
patent: 4106176 (1978-08-01), Rice et al.
patent: 4829650 (1989-05-01), Galard
patent: 4908926 (1990-03-01), Takeshima et al.

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