| 摘要 |
PROBLEM TO BE SOLVED: To measure whether to obtain a cam groove of a shape and dimensions as a product design about a cam cylinder for a lens barrel.SOLUTION: A measurement probe 5 having a spherical abutment part 3 of a diameter smaller than the narrowest part width W of a cam groove 39 is used to simulatively measure XYZ coordinate values of a side wall surface of the cam groove 39 at a plurality of measurement positions A, B having mutually different distances from a cam cylinder central axis of a cam cylinder 33, and data for specifying the shape of the cam groove 39 is acquired, such as an inclination degree of the side wall surface of the cam groove 39 and an interval between facing cam groove side wall surfaces. |
