A manufacturing adjustment system includes a decision part and a tolerance setting part. The decision part decides whether part dimensions calculated by a part dimension calculation part fall within a predetermined range of dimensions and a total machining time calculated by a total machining-time calculation part falls within a predetermined time. The tolerance setting part sets a workpiece tolerance for each machine based on the decision result of the decision part when the workpieces are produced by the machines.

A method to ascertain a quality of a product formed by a subtractive manufacturing device from a workpiece includes: determining a deflection/test force relation for a deflection of the device; measuring an actually exerted machining force applied by the device to the workpiece; automatically determining a machining force reference for the actually exerted machining force; automatically evaluating whether the actually exerted machining force deviates from the machining force reference. If an actually exerted machining force deviates from the machining force reference, then the method uses the deflection/test force relation to automatically determine for the actually exerted machining force, at least one correction deflection of the device and automatically creating at least one corrected drive control signal to fully or partially reduce the correction deflection.

A manufacturing adjustment system includes a decision part and a tolerance setting part. The decision part decides whether part dimensions calculated by a part dimension calculation part fall within a predetermined range of dimensions and a total machining time calculated by a total machining-time calculation part falls within a predetermined time. The tolerance setting part sets a workpiece tolerance for each machine based on the decision result of the decision part when the workpieces are produced by the machines.

A method to ascertain a quality of a product formed by a subtractive manufacturing device from a workpiece includes: determining a deflection/test force relation for a deflection of the device; measuring an actually exerted machining force applied by the device to the workpiece; automatically determining a machining force reference for the actually exerted machining force; automatically evaluating whether the actually exerted machining force deviates from the machining force reference. If an actually exerted machining force deviates from the machining force reference, then the method uses the deflection/test force relation to automatically determine for the actually exerted machining force, at least one correction deflection of the device and automatically creating at least one corrected drive control signal to fully or partially reduce the correction deflection.