Machining system and machining method

A machining system comprising:

• a jig which retains a plurality of workpieces;
• a measurement device which measures the plurality of workpieces retained on the jig;
• and
• a machining device which machines the plurality of workpieces retained on the jig,
• wherein the jig has a reference part which is positioned or position detected by the machining device,
• wherein the measurement device has:
• a measurement unit which measures a positional relationship of the plurality of workpieces retained on the jig relative to the reference part, and
• an input unit which uses a recording medium or communication to input positional information of the plurality of workpieces measured by the measurement unit to the machining device, and
• wherein the machining device has:
• a jig coordinate system specifying unit which specifies a coordinate system of the jig in the machining device, by positioning or position measuring the reference part of the jig, and
• a workpiece coordinate system setting unit which individually converts the coordinate system of the jig specified by the jig coordinate system specifying unit to a coordinate system of each of the plurality of workpieces based on the positional information inputted from the input unit.