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Description / Abstract:
This Standard pertains to the standardization of basic
toolholder shank, retention knob, and socket assemblies for
numerically controlled machining centers with automatic tool
changers. The requirements contained herein are intended to provide
toolholder interchangeability between machining centers with
automatic tool changers of various types. This Standard is the inch
solution for basic toolholder shank, retention knob, and socket
assemblies. This design specifies an interchangeable retention knob
with a 45-deg clamping surface.
Section 2 of this Standard specifies the dimensions and
tolerances of toolholder shanks having 7/24 tapers intended for
automatic tool change. These are intended for use with the
corresponding basic retention knob and spindle sockets specified in
sections 3 and 4 (see Table 1).
Section 3 contains information for standardization of retention
knobs for use with the 7/24 connection system described herein (see
Table 2).
Section 4 specifies the dimensions and tolerances of spindle
sockets, drive keys, and key seats for machine tool spindles having
7/24 tapers intended for automatic tool change (see Table 3 and
Fig. 1). These are intended for use with the corresponding basic
toolholder shank and retention knob specified in sections 2 and
3.