RESONANT OSCILLATING MASS-BASED TORQUING TOOL

摘要

1. A resonant oscillating mass-based torquing tool for use with a rotatable, friction-set workpiece comprising: a rotationally resonant rotationally oscillating mass (4); a means for effecting resonant oscillation of said mass; a dual stiffness spring (3), connecting said oscillating mass to a rotatable friction-set workpiece, said dual stiffness spring permitting relative rotation between said rotationally resonant,rotationally oscillating mass and said rotatable, friction-set workpiece and said dual stiffness spring effects a higher torsional output to said workpiece in one tightning rotational direction to rotate said workpiece in a tightening direction, and a lower torsional output in an opposite rotational direction being insufficient to effect rotation of said workpiece in said opposite rotational direction. 2. A resonant oscillating mass-based torquing tool according to claim 1, wherein said torquing tool (1) comprises a handheld torque wrench. 3. A resonant oscillating mass-based torquing tool according to claim 1, wherein said dual stiffness spring (3) comprises a combination bending and torsion springs. 4. A resonant oscillating mass-based torquing tool according to claim 1, wherein said position of said oscillating mass (4) is determined by position encoder (10). 5. A resonant oscillating mass-based torquing tool according to claim 4, wherein said positioning encoder (10) comprises an optical position encoder.