| 摘要 |
<p>The mounting comprises a base (20) supporting a first rotary motor (M1) whose shaft (22) has secured thereto a housing (23) supporting a second rotary motor (M2) whose shaft (24) has the stylus (26) secured thereto. Each motor is operable optionally in a constant torque mode and a positioning mode and each motor has an angular position transducer (T1, T2). In use, the base (20) is secured to the operating member (10) of a coordinate measuring machine and the machine is driven through a path such that the free end (27) of the stylus can maintain engagement with the surface of a workpiece under the force generated by one of the motors while that motor is in the constant torque mode. The profile of said surface is then determined as a function of the coordinate position of the operating member, the angular position and the length (R) of the stylus.</p> |
