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An old automatic lathe that performs threading tasks on metal parts presents motor overheating problems because it changes direction of rotation to unscrew the part. the engine it has is a 2-speed Dahlander. This lathe was modified, apparently originally did not change direction of rotation or had other drive system.
In threading operations of the parts the lathe rotates at high speed. once finish the thread of the piece the machine has to stop and start to turn in the opposite direction in a period of 1 or 2 seconds to unscrew the piece. there is a large inertia that the engine has to overcome. the machine does not have a mechanical brake.
It is necessary to put a new engine and drive system. the best option
view was to install a three-phase motor (No Dahlander), a VFD
(Variable frequency drive), and PLC, but maybe the engine will continue to heat. The other option seen would be the installation of a servomotor.
I wanted to know what would be the best solution to avoid engine warming.
thanks
In threading operations of the parts the lathe rotates at high speed. once finish the thread of the piece the machine has to stop and start to turn in the opposite direction in a period of 1 or 2 seconds to unscrew the piece. there is a large inertia that the engine has to overcome. the machine does not have a mechanical brake.
It is necessary to put a new engine and drive system. the best option
view was to install a three-phase motor (No Dahlander), a VFD
(Variable frequency drive), and PLC, but maybe the engine will continue to heat. The other option seen would be the installation of a servomotor.
I wanted to know what would be the best solution to avoid engine warming.
thanks