Mandrels in general (expansion mandrels B23B31/40)

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Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine (work-tables or other parts, e.g. faceplates, normally not incorporating means for securing work B23Q1/00; automatic position control B23Q15/00 ; rotary tool heads for turning-machines B23B3/24, B23B3/26; non-driven tool holders B23B29/00; general features of turrets B23B29/24 ; tools or bench devices for fastening, connecting, disengaging or holding B25B ) > for securing to a spindle in general (B23Q3/152 takes precedence; chucks B23B31/02) > Mandrels in general (expansion mandrels B23B31/40)