- Joined
- Mar 26, 2018
- Messages
- 2,724
Hi All,
I have an odd love of metrology after working a few summers in a metrology lab while I was in school. I have a small shop at home like many of you and I run a CNC mill (G0704) and a lathe (Enco 12x36).
I'd like to start an open discussion about what are the fundimental errors in a machine tool (in particular a mill), how to measure them, what instruments are required, and maybe a brief discussion on how to correct them.
Here are the logical sections I have come up with. I'll try to make a new post for each as I have time. I really value all your input. My hope is that I can fully measure my machine, and maybe use it as a starting point for future work.
-Mike
I have an odd love of metrology after working a few summers in a metrology lab while I was in school. I have a small shop at home like many of you and I run a CNC mill (G0704) and a lathe (Enco 12x36).
I'd like to start an open discussion about what are the fundimental errors in a machine tool (in particular a mill), how to measure them, what instruments are required, and maybe a brief discussion on how to correct them.
Here are the logical sections I have come up with. I'll try to make a new post for each as I have time. I really value all your input. My hope is that I can fully measure my machine, and maybe use it as a starting point for future work.
- Spindle Errors (Runout, Taper form errors, angular misalignment, etc.)
- Z Axis Errors (Tram, Column twist, Column roll, Head wedge, Nodding, screw lead, etc.)
- Y Axis Errors (Saddle wedge, Saddle twist, Saddle roll, Saddle sag, screw lead, etc.)
- X Axis Errors (Table wedge, Table twist, Table roll, Table sag, screw lead, etc.)
- Axis to Axis errors (XY Perpendicularity, XZ Perpendicularity, and YZ Perpendicularity)
-Mike