Technological symbols for positionning and clamping of parts on a machine tool used in France (NF E 04-013): technological solution used for the contact.
1st column: symbol for the technology
fixed contact,
adjustable system,
centering,
clamping, tightening
concentric clamping (collet, chuck);
2nd column: contact on a machined surface;
3rd column: contact on a raw surface.
Own work
Cdang