HEIDENHAIN CNC Pilot 4290 - Manual (Page 373)

HEIDENHAIN CNC PILOT 4290 361
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4 – Roughing
Roughing – Tool and Machining Standards
Finishing tools are defined according to machining location and main
machining direction (MMD) via setting angle and point angle. In
addition:
■ Use of standard roughing tools is preferred.
■ Tools that enable full-surface machining are used as an
alternative.
■ Setting angle – external/longitudinal [RALEW]
■ Point angle – external/longitudinal [RALSW]
■ Setting angle – external/transverse [RAPEW]
■ Point angle - external/transverse [RAPSW]
■ Setting angle – internal/longitudinal [RILEW]
■ Point angle - internal/longitudinal [RILSW]
■ Setting angle – internal/transverse [RIPEW]
■ Point angle - internal/transverse [RIPSW]
Parameter for machining contour areas:
■ Standard/Complete – external/longitudinal [RAL]
■ Standard/Complete – internal/longitudinal [RIL]
■ Standard/Complete – external/transverse [RAP]
■ Standard/Complete – internal/transverse [RIP]
Entry:
■ 0: Complete roughing cycle, including plunge-cutting. TURN PLUS
looks for a tool for full-surface machining.
■ 1: Standard roughing cycle without plunge-cutting
Roughing – Tool tolerances and allowances
For tool selection, the following applies:
■ Setting angle (EW): EW >= mkw (mkw: increasing contour angle)
■ Setting angle (EW) and point angle (SW):
NWmin < (EW+SW) < NWmax
■ Secondary angle (RNWT): RNWT = NWmax – NWmin
■ Secondary angle tolerance [RNWT] – tolerance range for
secondary cutting edge
■ Relief cutting angle [RFW] – Minimum angle differential between
the contour and secondary cutting edge