Method for positioning seamed balls

Details Method for positioning seamed balls Method for positioning seamed balls

1985-09-13

1987-04-14

Spar, Robert J.

Material or article handling

Apparatus for moving intersupporting articles into, within,...

Stack forming apparatus

198394, 414754, 414772, 414781, 414783, B25J 904

Patent

active

046574751

ABSTRACT:
A method for positioning seamed balls each having an endless curved seam line, comprising steps of: supporting each ball to locate its center at an origin of a three-dimensional orthogonal coordinate consisting of two horizontal axes X, Y and one vertical axis Z; rotating the ball on at least one of the axes X, Y until an optical sensor disposed on the axis Z specifies such a particular locus that intersects the seam line at four points during one full rotation of the ball to provide four arcs along the locus; finding the shortest arc among the four and locating its mid point on the axis Z by rotating the ball on the axis X; rotating the ball on the axis Y so that an intersection of a bisector and a part of the seam line is located on the axis Z; and rotating the ball on the axis Y until a hip center of the ball is located on the axis Z.

REFERENCES:
patent: 3088613 (1963-05-01), Wuesthoff
patent: 3466514 (1969-09-01), Brunner et al.
patent: 3932977 (1976-01-01), Ringler

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