That reminds me of the time I forced the Z-Axis servo bit off on a vertical machine center. oops! The floor shock before I could force it back on. Boy, did I feel stupid, and in a customers shop. The machine had a motorized spindle and we were checking to see if the brake was draging, and I forced the wrong bit. Dang.....
On our slant beds and verticals we use a mechanical brake if the slide is belt driven. When the servo is powered down the brake engages. If it is direct drive, there should be a brake on the servo motor. Maybe that one failed? That's a bad situation tho. I hate it when stuff like that happens. |