Process for shaping an ophthalmic product

A process for shaping an ophthalmic product using a machining device equipped with clamping means for clamping the ophthalmic product, a machining tool for machining the ophthalmic product and a force sensor adapted to measure a force that is related to the force applied by the machining tool to the ophthalmic product, the process comprising:

• a step of clamping the ophthalmic product in said clamping means;
• and
• a step of roughing out the ophthalmic product by means of the machining tool so as to bring the initial outline of the ophthalmic product to a final outline of different shape,
• wherein, during the step of roughing out:
• the value of said force is measured by the force sensor, and
• the machining speed is continuously adjusted so as to maintain the measured value equal to a target value, said target value being determined as a function of an electrical power consumed by the machining device.