Hello,
I bought a -98 Okuma LB15 for some months ago, I have made some parts in it without any problems. This week I have made shafts with two grooves for a customer, I had problems cutting the grooves, the width varies about 0.04 mm. I checked the movement on the z axis with a dial indicator and it stops under 0.01 mm when I repeats the movement 5 times fast but if I wait about a minute it goes 0.06 longer, why? what happens when the machine rests for a minute?