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Old 10-02-2009, 07:36 AM
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Join Date: Dec 2007
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Bad Machine Tool. What are our choices?

On December 1st of last year we started up a new You Ji Vertical Turning Lathe 2000C. This machine looked like a metal eater when first installed. On December 4th the milling spindle froze. It was taken out rebuilt, froze again, taken out rebuilt, froze again, then they realized the thrust bearings were being installed upside down. Supposedly fixed that. Then the C-axis gearbox went out, they built a "heavier duty" gearbox for us and installed it. We could never contour with X and C axis correctly since that install. They changed a bunch of parameters, but could never get it to work. So now we can't mill contour with X/C, but at least we can index and drill right? Wrong. They say I can't use bigger than a 2.0" inserted drill or it will hurt the 35hp cat-50 spindle. Also now when I turn on the milling spindle I can feel it grinding inside. Also forgot to mention the $500 encoder it had on the C-axis, which was replaced by a $7000 encoder now. We've had this machine almost a year, and it's only ran maybe a month and a half. We have sent a letter to the machine supplier demanding our down payment back, tooling expenses, and that they remove their machine. They have refused, saying they are going to install a brand new machine for us. We have come to the conclusion that this machine won't do our parts, so we don't want another. They say sue us, but you'll have to come to Ohio to do it. We are in St. Louis. What can we do?
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