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help needed solving metal guillotine problem
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14-07-2016 7:42pm#1Maybe somebody out there can help me solve a problem with an old British engineered sheet metal guillotine. Or send me in the direction of a suitable forum for same.
I understand that the description is difficult to follow but I am hoping that someone recognises this type of machine or drive system. I also have many more descriptive images and video to explain to anyone who thinks they can help.
The machine is very solidly built and I really hope to get it back in working order as it was recently.
Many thanks in advance
I'll keep the description short for now: The guillotine is motor driven. Turn on the motor and the red fly wheel is driven by belts from the motor. The fly wheel revolves around the drive shaft freely. Press the foot pedal and a semi-cylindrical shaft within the drive shaft turns and engages, key-like, with the flywheel. The drive shaft turns through one revolution, dropping and raising the blade and stops again at top-dead-centre (because you have removed your foot from the foot pedal).
The problem is that the guillotine does not stop at top dead centre, it falls, turning the driveshaft backwards away from the foot pedal lever, allowing the semi-cylindrical shaft to engage with the driveshaft and attempts to turn, jumping against the foot pedal lever and goes through a shuddering series of engaging and disengaging.
Video here:
http://sendvid.com/t825xzv7 (in slow motion)
http://sendvid.com/q41066u6
http://sendvid.com/qc6t9pqe0
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