- #1
Mattuu
- 7
- 0
Hey everyone,
I have a problem with sizing a clutch for my machine. My problem is, I don't know how to calculate the needed value (Nm) for the clutch to withstand the torque affected by the flywheel. I have a flywheel that weighs 90kg and is 600mm in diameter. It is rotating at 500rpm (52,36rad/s) via electric motor and 1:3 gear ratio. Torque transmitted to the flywheel constantly is around 60Nm and inertia of the flywheel is 4,05kgm^2. After the flywheel at its shaft is toothed clutch, that connects the shafts of the flywheel and the cutting tool. The flywheel rotates constantly and at desired time the clutch is activated and the cutting tool starts rotating with the flywheel.
Problem is, I don't know how to calculate the needed value (Nm) for the clutch. I know it usually is calculated with acceleration, but in this case I don't know it. The cutting tool rotates 180 degrees at a time, and will do the cut within 90-120 degrees from its starting point. Since the tool is rotating at 500rpm, it takes 0,12 seconds for the tool to rotate once. I'm not sure how to explain this better, so if I left out some important values, please let me know. If anyone could help me with my problem, I would be really grateful.
I have a problem with sizing a clutch for my machine. My problem is, I don't know how to calculate the needed value (Nm) for the clutch to withstand the torque affected by the flywheel. I have a flywheel that weighs 90kg and is 600mm in diameter. It is rotating at 500rpm (52,36rad/s) via electric motor and 1:3 gear ratio. Torque transmitted to the flywheel constantly is around 60Nm and inertia of the flywheel is 4,05kgm^2. After the flywheel at its shaft is toothed clutch, that connects the shafts of the flywheel and the cutting tool. The flywheel rotates constantly and at desired time the clutch is activated and the cutting tool starts rotating with the flywheel.
Problem is, I don't know how to calculate the needed value (Nm) for the clutch. I know it usually is calculated with acceleration, but in this case I don't know it. The cutting tool rotates 180 degrees at a time, and will do the cut within 90-120 degrees from its starting point. Since the tool is rotating at 500rpm, it takes 0,12 seconds for the tool to rotate once. I'm not sure how to explain this better, so if I left out some important values, please let me know. If anyone could help me with my problem, I would be really grateful.