| 摘要 |
The invention relates to a test device on ring spinning or ring twisting machines for a visual test of the eccentricity between a spindle and an associated ring, in which the viewing direction along the spindle axis is directed towards the spindle tip, and there is arranged on the spindle a spindle attachment with an outer edge concentric relative to the spindle, on the ring a ring attachment with an inner edge concentric relative to the ring and between the spindle and the ring, under the outer edge of the spindle attachment and the inner edge of the ring attachment in the viewing direction, a bright field generated by a lighting device, the diameter of the outer edge of the spindle attachment being equal to the diameter of the inner edge of the ring attachment or larger or smaller than the diameter of the inner edge of the ring attachment by double the amount of the permissible eccentricity. The object on which it is based is to eliminate the outlay for determining the eccentricity numerically. This object is achieved in that the bright field (15) consists of at least three individual surfaces (17, 23) which are distributed uniformly over the circumference of the bright field (15) - Fig. 1 -. The invention achieves the technical effect that a test device making it possible to determine the eccentricity numerically is provided. <IMAGE>
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