Method for controlling a pipe bending machine

Details Method for controlling a pipe bending machine Method for controlling a pipe bending machine

B - Operations, Transporting

21

D

B21D 7/12 (2006.01) B21D 7/025 (2006.01)

Patent

CA 2178985

For the advance of the slide rail of a pipe bending machine, a hydraulic cylinder (22) is provided. The pressures (P1,P2) on both sides of the piston (23) of the cylinder (22) are detected, and from these pressures, the actual value of the advance force (F) is calculated. A set value generator (49) generates the set value (Fs) of the advance force in dependence on the respective rotational angle (.alpha.) of the bending template. A controller (48) controls a throttle valve (42) such that the actual value (Fi) follows the set value (Fs). Thus, a power control of the slide rail advance is effected.

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