I'm new to milling, so far the only thing I did has been watching videos. I'm not fixated about precision although that is a long term goal for me.
I've got cheap ER16 and ER25 collect chucks for my MT2 milling machine which is integrated in the 250 x 550mm lathe.
On the milling spindle I have between 0.01 and 0.02mm total runout on the edge of the taper.
Fitting the chucks on with moderate tension I read some 0.03 - 0.04mm on the collet chuck taper. That is pretty much the same for both of them.
This improves a bit if I rotate the chuck in the spindle, but I did not spent a lot of time with this approach. A test bar into the ER16 has a little more than 0.05mm TIR not far from the collet.
Are these errors typical in this class of machines? Can give me trouble in producing "reasonably" parts?
Is it a normal practice to indicate a chuck for the best position and possibly mark it?
I've got cheap ER16 and ER25 collect chucks for my MT2 milling machine which is integrated in the 250 x 550mm lathe.
On the milling spindle I have between 0.01 and 0.02mm total runout on the edge of the taper.
Fitting the chucks on with moderate tension I read some 0.03 - 0.04mm on the collet chuck taper. That is pretty much the same for both of them.
This improves a bit if I rotate the chuck in the spindle, but I did not spent a lot of time with this approach. A test bar into the ER16 has a little more than 0.05mm TIR not far from the collet.
Are these errors typical in this class of machines? Can give me trouble in producing "reasonably" parts?
Is it a normal practice to indicate a chuck for the best position and possibly mark it?