Norman Cuts a Steel Tap for His Brother on the 1500MX

[@htral]

South Bend used a similar thread for for the better steady reasts

[@jameslee522]

How did you come up with feeds and speeds for that high or an rpm?

[@TormachTechnicalSupport]

For which operation? -Norman

[@jameslee522]

@@TormachTechnicalSupport For the mill.

[@TormachTechnicalSupport]

@@jameslee522 Yes, for which operation? I don't know what tool you are asking about. -Norman

[@jameslee522]

@@TormachTechnicalSupport The yg1 6 flute. op1 @8:40 in the video

[@jameslee522]

@@TormachTechnicalSupport @8:35 in the video.

[@darikmatters8866]

The first turning cut did not sound good (squealing) and it showed in the surface finish.. There was also some squealing when you milled the flutes. Is there a rigidity issue with the spindle or 3 jaw rotation unit or did you just use the tooling, speeds and feed without critical adjustments since it is a non critical part?

[@tdg911]

Look at the length of the tool. That's where the squealing comes from. That tool is deflecting from the stickout. My machine sounded like it was being axe murdered on my first attempts of 316. Increased my woc a bit and that fixed my issue. In this case I can see the long tooling was needed for clearance issues on the 4th axis.

[@TormachTechnicalSupport]

I cranked down the feedrate and depth of cut during the turning since we didn't have flood coolant. At some point during program edits I turned off feed rate optimization and didn't catch it, that is the squeaking right as the tool hits the corner of the flutes. But otherwise, just a really long tool. There was about .04" of clearance between the holder and the chuck jaws at one point. -Norman

[@darikmatters8866]

@@TormachTechnicalSupport Thanks. It sound like these are issues you could tune and adjust for if you were really running this part commercially..