Word of warning.... CHECK YOU POWER DRAWBAR for loose bolts!!! All my bolts (3 long ones with the black stand offs and the main plunger bolt) came loose and binded my Tormach during machining!! Use Locktite!!
Happened last night... I was running a 63pc run of a small disc (7 at a time) and about 2hrs in, during my 4th batch, my machine started binding. I thought my tool was hitting/cutting into the clamp (ya.. did that before and that's what it sounded like). E-Stopped the machine and noticed my spindle was frozen. First I thought the motor died... loosen the belt and the spindle is still frozen... I thought crap... the spindle assemble froze! Then noticed the plunger bolt on the power drawbar was pressed against the top of the drawbar pushing the entire power drawbar assembly up. Had to use a wrench to loosen up the plunger bolt. I believe the plunger bolt started loosing and as soon as it started rubbing against the top of the drawbar, the CW turn of the spindle spun the plunger bolt further out pushing the power drawbar up. After I loosen the plunger bolt, I checked the 3 long bolts with the long black stand offs and they were also extremely loose!!
I guess the vibration of the machine loosen all the bolts. I installed my power drawbar in Jan 2010. Did not think to use locktite or check the assembly as I thought it was simply a bolt on. So... check your power drawbars for loose bolts especially the plunger bolt!!
Ken
Did anything happen to your machine, spindle, etc.. or is everything good ?
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