Re: [Emc-users] How to Correct Angular Axes Misaligment in Software?

[Jon E. <el...@pi...>]

st...@gm... wrote:
>   Tramming the spindle will tell you how perpendicular the spindle centerline is to that particular spot on the table surface. It will not tell you the perpendicularity of the spindle centerline (or the Z axis) to the XY plane.
>   The actual level of the machine is almost irrelevent. If all the machine components are fixed at the same level values and the machine is straight and square you will be able to machine straight and square
Right, I have a procedure for this.  I mill a circular track in a piece 
of scrap.  Then I move the spindle to
the center of that circle, and sweep it with a dial indicator.  
Unfortunately, my machine has wear on
all the ways, and so I get a horse saddle shape, with an upward curve in 
one axis and a downward
curve in the other.  But, sweeping it with the indicator, I can split 
the difference and get the spindle
as close to perpendicular to the "average" of the X-Y plane.

Jon