Patent ID: 8770312

Claim:
A cam driving device for a processing device comprising: a cylindrical member; a rotational shaft provided in the cylindrical member and having a mount hole formed on an outer peripheral surface thereof; a cam provided to the rotational shaft so as to be rotatable relative to a portion of the rotational shaft; a tool mounted in the mount hole of the rotational shaft so that the tool can be protruded and retracted through the mount hole in a radial direction of the rotational shaft in accordance with a profile of the cam, the cylindrical member and the rotational shaft being axially reciprocated to process a non-circularbore; a system performing a simulation, under a condition that an assembly member is assembled to an assembly target member having a bore having a desired cross-sectional shape, to simulate how the bore is deformed and thus what shape the bore has after the assembly on a computer; a storage unit for storing a data table created on the basis of shape data obtained on the basis of the simulation and representing associating relationship between a rotational angle of the cam and a protrusion amount of the tool which is provided on a basis of the rotational angle of the cam; and a controller for advancing or retarding the rotational angle of the rotational shaft with respect to the cylindrical member according to the data table stored in the storage unit.