An ETA innovation, this unconventional Screw Press, consumes less energy, and no energy loss, which otherwise as in the case of Friction Screw Press with mechanical brake.
An AC servo / spindle motor drives the flywheel precisely at a set speed, till the dies come very close, and then the motor is disabled. The entire kinetic energy of the moving mass is transferred to the job. The motor brakes on line-generation principle
Since the drive motor doesn’t run when the ram is stationery, no energy is consumed during idling of press.
Advantages
• Low energy consumption
• No loss of energy in braking
• Drive motor doesn’t run when the ram is stationery
• Flywheel directly driven by servo / spindle motor
• Compressed air consumption is negligible
• On return stroke the motor breakes on line generation principle |