Method for adjusting the oscillation frequency and/or adjusting the inertia and/or balancing of a movable timepiece movement component or of a timepiece spring balance assembly

A method for adjusting an oscillating frequency of a timepiece sprung balance assembly, said sprung balance assembly including at least one balance that includes a peripheral rim and including at least one spiral spring, said at least one balance and said at least one spring being attached to one another at a collet, wherein said sprung balance assembly is pivotable around a balance axis in a timepiece movement, and the method is for adjusting inertia and balancing said at least one balance of said timepiece sprung balance assembly, the method comprising:

• conducting a removal or a displacement of material on said sprung balance assembly by using at least one laser source to conduct a micromachining or a microfusion operation on the material of said balance under an effect of at least one pulse sequence of said laser source;
• and
• controlling said at least one pulse sequence by a controller configured to generate, sequence, and interrupt any pulse of said at least one laser source, wherein said controller is also configured to control movements of at least one beam discharged from said laser source, wherein said controller is automatically controlled by a measuring or comparing mechanism, wherein
• said removal or displacement of the material on said sprung balance assembly is conducted with said sprung balance assembly assembled in the timepiece movement, and wherein
• both said sprung balance assembly and a direction of the beam of said laser source are moving during said at least one pulse sequence.

A method for adjusting an oscillating frequency of a timepiece sprung balance assembly, said sprung balance assembly including at least one balance that includes a peripheral rim and including at least one spiral spring, said at least one balance and said at least one spring being attached to one another at a collet, wherein said sprung balance assembly is pivotable around a balance axis in a timepiece movement, and the method is for adjusting inertia and balancing said at least one balance of said timepiece sprung balance assembly, the method comprising:

• conducting a removal or a displacement of material on said sprung balance assembly by using at least one laser source to conduct a micromachining or a microfusion operation on the material of said balance under an effect of at least one pulse sequence of said laser source;
• and
• controlling said at least one pulse sequence by a controller configured to generate, sequence, and interrupt any pulse of said at least one laser source, wherein said controller is also configured to control movements of at least one beam discharged from said laser source, wherein said controller is automatically controlled by a measuring or comparing mechanism, wherein
• said removal or displacement of the material on said sprung balance assembly is conducted with said sprung balance assembly assembled in the timepiece movement, and wherein
• the displacement of the material within the sprung balance assembly is conducted either by localized melting followed by a displacement of a melting zone followed by solidification cooling, or by creating or relaxing internal stresses during a thermal treatment or under an effect of an external force, or by bending a deformable zone or a lug or a pin, or by spreading of the material.