Chinese conversion
I have a old DoAll mill. It's a Bridgeport clone. So close that the that only the keys in the shafts and the bolts that hold it together are metric instead standard. I bought a CNC "kit" from Wantai Motor on ebay. The tech support is, well lacking at best. So I've come here begging for help. I am using Mach3 along with BobCad. But we're not there yet. Everything is mechanically correct (no binding or heavy loads). I can make things move but that's where it starts to go wrong. I have 1300 oz NEMA 34 motors on the X, Y and A. And a 350 oz NEMA 23 on the Z. The X and Y are direct on the end of the shaft. A is direct on the Shaft of a round table. Z is reduced about 2:1. through a chain system. Here's where I'm at. I've tried tuning the motors in Mach3 and at best I've got 70 rpm from the motor itself. I got a cheap laser tach from Harbor Freight. I have a 24vdc power supply to the drivers and a 5vdc to the breakout board. The 34 drivers are 24-80vdc the 23 is 24-50. Can I or should I get a bigger power supply? Will that speed things up. I'm not necessarily looking for speed, I just know that this isn't right. I should perform better than this.
Nothing is impossible. It's just a question of practicality.