SpencerFTO
Plastic
- Joined
- Jun 29, 2020
Hi there,
I'm pretty new to the CNC and even machining arena. I'm a university student on an internship and I'm having a bit of trouble with our mini CNC mill here. It's a Minitech GX mill (Mini-Mill/GX - MINITECH MACHINERY CORPORATION), with 4 and 5 axis stages(5th Axis - MINITECH MACHINERY CORPORATION). I understand the basics of G-code, and I know how a dial test indicator works, but I'm struggling to understand how to set up the 4th axis, the trunnion table. I've looked online a ton, but haven't found anything that really helps with my issue. Here it is:
So I have the trunnion table on the mill, but it isn't straight on the roll, pitch, or yaw axes. I understand how to run the dial test indicator along the table in the x-axis and y-axis for roll and pitch and how to shim it up, but yaw confuses me. I had the table accurate to under half a thou over a couple inches (we're only making small parts) in the x- and y-directions, but when I ran the DTI along the table at +90 and -90, the runouts are different. So I believe that the base plate on the trunnion table isn't level with the axis of rotation, but I don't know how to accurately level the axis of rotation if I can't count on it being level with the table. I attached a picture of my setup, if that helps:
Any help is appreciated! I've been reading lots of these forums, and thanks to all of you for answering other folks' questions too,
S
I'm pretty new to the CNC and even machining arena. I'm a university student on an internship and I'm having a bit of trouble with our mini CNC mill here. It's a Minitech GX mill (Mini-Mill/GX - MINITECH MACHINERY CORPORATION), with 4 and 5 axis stages(5th Axis - MINITECH MACHINERY CORPORATION). I understand the basics of G-code, and I know how a dial test indicator works, but I'm struggling to understand how to set up the 4th axis, the trunnion table. I've looked online a ton, but haven't found anything that really helps with my issue. Here it is:
So I have the trunnion table on the mill, but it isn't straight on the roll, pitch, or yaw axes. I understand how to run the dial test indicator along the table in the x-axis and y-axis for roll and pitch and how to shim it up, but yaw confuses me. I had the table accurate to under half a thou over a couple inches (we're only making small parts) in the x- and y-directions, but when I ran the DTI along the table at +90 and -90, the runouts are different. So I believe that the base plate on the trunnion table isn't level with the axis of rotation, but I don't know how to accurately level the axis of rotation if I can't count on it being level with the table. I attached a picture of my setup, if that helps:
Any help is appreciated! I've been reading lots of these forums, and thanks to all of you for answering other folks' questions too,
S