B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
B21D 9/00 (2006.01) B21D 11/20 (2006.01)
Patent
CA 2093540
SL 299 ABSTRACT OF THE INVENTION In tube bending apparatus controlled automatically by a controller programmed to cause the apparatus to make the desired bends, further gauging apparatus is provided for measuring the springback of the tube from the desired configuration. Data from this gauging apparatus is fed directly to the controller to modify its programming to take account of springback for that tube. The gauging apparatus comprises means to measure the angles of deflection of the tube from the desired angles for at least two different angles. From this data, proportional sprinback and constant springback are established. The gauging apparatus may comprise pivotal blocks which may be aligned with straight sections of tube bent from originally straight tube.
Eagle Precition Technologies Inc.
Stevenson & Maye Smith Lyons Torrance
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