Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: Promech on October 18, 2010, 09:56:30 AM
-
Hi all:
In the process of retrofitting my CNC lathe I need to solve the turret problem. From the turret base to its center there are 80mm.
The lathe comes with a Sauter Turret which is 25 years old. It has a 380 V A.C. motor. If I was to use this turret I would have to install a transformer to raise voltage from 220V to 380V. I would also had to figure out all the logic so that I could program it with the PLC. The turret is unidirectional. An alternative would to replace the A.C. motor with a servo. This can be messy mechanically.
I have also checked for new turrets. I have asked for quotes to Sauter, Duplomatic, Dorian and Pragati. So far I have only got firm quote from Pragati in India. The turret (w/o the disk) sells for about 1000 USD which to me does not look expensive.
http://www.pragati-automation.com/en/product/turrets/btp/btp80.shtml
Does any one had any experience with Pragati, or have any ideas regarding this subject?
Thanks,
Jorge
-
What does the original turret look like? I have just fitted a new turret to the front of my lathe and fitted a servo to spin it. Originally it was hydraulic for both clamp and rotate. The turret I have on the rear is hydraulic clamp and rotate and at some point I will also retrofit it to servo.
Hood
-
Hood, it is an electomechanical model, with movement of a single A.C. motor plus planetary gears, cams, springs etc. it clamps, unclamps, rotates etc.. It does not have hydraulics or pneumatics. Will have to study carefully the adaptation of a servo system.
-
Looks like a decent enough turret. Is i definitely single phase? 380v would usually be 3 phase here.
Hood
-
Its 3 phase. By single I meant that just the motor did all the functions.
-
IF the turret is functional I would just use a 3phase step up transformer to boost the voltage. Obviously the original logic worked ok . program up a PLC and you should be good to go.
Just a thought, (;-) TP