Doing a check out of the "SYSTEM" to find just what is causing an accuracy problem requires a methodical
approach. Yes you do the obvious to start. I like to put what i am looking for into perspective.
So the easy things are done, but, always with the thought that simple things are related to other factors.
MDF, wood, plastic is not exactly a true medium to check tool cutting, different materials, etc all come into play.
Heck, the tooling marks left in the surface can be worth 1 or 2 thou.
Electronics is hard to check as most will not have the equipment to do so. Also simple mechanical
items can be difficult to check. ie; Belt tension can have an affect on the axis motion, is usualy
small amount in terms of steps, same goes for a timing gear, but they are repeatable per revolution
and a bear to isolate components of the system. another simple example is a coupling, other than a solid
coupling,it can affect the motion also depending on applied torque, age, etc.
ALways remember this: What am I measuring and it it the same as the basis!
Just some things to consider before you even start to question what is wrong as compared to before!
RICH
Guest
