Method for adjusting oscillation frequency and/or inertia and/or e.g. dynamic balance of time balance motor in clock movement or balance and spring assembly of watch, involves controlling pulse using driving unit to drive movements of beam

摘要

The method involves removing and/or adding and/or moving a material on a movable micromechanical component by using a laser or picolaser (2) to carry out micromachining and/or micromelting of the material or an added material, for vaporizing and/or moving and/or welding the material, under the effect of a pulse from the laser or picolaser. The pulse is controlled using a driving unit (3) to generate, sequence, and interrupt the pulse, and to drive movements of a beam (20) of the laser or picolaser, where the driving unit is connected to or controlled by a measurement or comparison unit (4). Independent claims are also included for the following: (1) a balance and spring assembly for a timepiece, comprising a counterweight (2) a device for adjusting oscillation frequency and/or inertia and/or balance of a movable component in a clock movement or a balance and spring assembly of a timepiece, comprising a laser source.