| 摘要 |
PURPOSE:To rotate the output shaft continually with quite high indexing accuracy by providing means for correcting the error of fixing accuracy of follower against a rotary member in an indexing device. CONSTITUTION:Upon continuous rotation of the rotary shaft 41 of pulse motor 4 in the arrow direction A, a pair of adjoining rollers 35 of a rotary member 3 will hold the slowly inclining section 24 of a projection 23 thus to rotate the rotary member 3 with very slow speed in the arrow direction A. Upon rotation of the rotary member 3 in same direction to make one rotation of an outercircumferential cam 2, one set of rollers 35 will reach to the position of aforementioned set of rollers 35 thus to rotate the output shaft 30 together with the rotary member 3 by 60 deg.. Here, the rotary angle of the output shaft 30 when the rotary shaft 41 of motor 4 has made accurately rotation, is measured, and if there is an error against 60 deg., the rotary shaft 41 will make correcting rotation to detect the rotary angle through an angle detector 43 and to store in a controller 42. A pulse signal required to make one rotation of the shaft 41 is provided from said controller 42 to rotate the shaft 41 continually thus to rotate the shaft 30 accurately by 60 deg.. |
