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« on: October 30, 2011, 10:32:46 PM »
We have a website where we sell billet aluminum mortorcycle parts for Buells and we also make billet alum emblems and accessories for cars. Every thing we make is from T6061. A 1/2" cutter is about the largest cutter that I use and for hogging I use a corncob. I am happy with the basic machine. The problem is in the cheap chinese electronics. It does not seem to matter how you tune the motor it has no torque. You can stop it with your hand. We bought the machine in May of this year and have allready went through 3 stepper motor drivers , we are on our second spindle drive board, the coolant motor was bad, the digital display has quit working even the switches and worklight have failed. I have worked with machines since 1985 and owned a large machine shop that recently fell victim to the economy and I have never seen so much fail on a single machine in so little time. I ran across a thread on here where the 1100w sanmutang motor and driver was being discussed. I believe the thread wqas started in 2008 sometime and the talk was about the problems they were having with that combination. The only difference with mine is the motor is a 1500w model. exact same driver board as the 1100w that keling sells. This unit exhibits the same problems. (1) no torque its a 2 hp brushless motor and you can stop it with your hand (2) The motor will just stop in the middle of a cut. It doesnt matter if you are using a 1/4" cutter and taking .010 at 8ipm. it will just stop running a program with no part in the machine.
I have rerouted and shielded the cables to prevent interferance from the cables that carry voltage. I am running a 6 core prosser at 3.2 ghz with 8 gig of ram windows Xp professional service pack 3. I have tried every kernel speed. The driver check utility gives me a execellent rating and the pulse stream looks beautiful even at 100khz. When it stops there is no indication of why it is happening. I have over $10.000 dollars worth of parts needing to be made to fill orders and a new machine that wont make parts and its killing me. I just purchased a C32 dual port board from CNC4PC to replace the bob in the machine and when I can I plan on some larger steppers an probably gecko drives.
If anyone knows of a fix for this I am all ears
Ken
There is no replacement for displacement
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