boylesg
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Have you considered using a gear mechanism to convert motor torque to the linear motion of the blade? It would make more sense to make the motor pass through several steps to produce the required depth of cut, a high gear ratio would make it easy.
Alternatively, can the cam be replaced by a rotating screw shaft as a simple way to convert rotary to linear motion?
Brian.
Hi,
If I understand correctly, then the excentric red part presses the knife to the plastic tube to cut it off.
This needs a lot of force.
I´d do some test with a rope, a bucket and water.
Fix the rope in a way that it when you pull on it it presses the knife to the plastic tube
at the other end of the rope fix a bucket. The bucek should be freely hanging down on the rope. Maybe you need some metal ring or similar to redirect the rope.
Then gently fill water into the bucket until the plastic tube gets cut off.
Measure the weigh of bucket with water, then calculate force in Newton.
Klaus
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