| 摘要 |
<p>A mechanism (10) for scanning the contour of a tri-dimensional body (R) including control circuitry (120) for processing and storing the pattern data obtained. The contour pattern is measured by using contour follower members (92x) that radially slide between the two arms (108, 108') of a scan rotor assembly (100) that is driven by a reference step motor (102). Coaxially aligned phase disks (82x) are slidably mounted over outer slots (112x, 112x') on the outer periphery of the arms and a linkage mechanism (94x) is pivotally mounted on one end to a predetermined point (91x) in the phase disk and the other end (93x) to the contour follower member. The phase disks are slowed down by frictional force applied to the phase disks and this slowing down force is overcome by the contour follower once it comes in contact with the reference body. The phase angle difference between the phase disks and the referenced step motor rotation is measured, processed and stored for subsequent pattern matching with the use of a microprocessor.</p> |
