HEIDENHAIN SW 68894x-02 - Manual (Page 537)

HEIDENHAIN CNC PILOT 640 537
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Finishing – Machining standards
Machining standards
 Tool angle – external/longitudinal [FALEW]
 Point angle – internal/longitudinal [FILEW]
 Tool angle – external/transverse [FAPEW]
 Point angle – internal/transverse [FIPEW]
Tool selection
 Finishing cycles are primarily executed with standard
finishing tools.
 If form elements such as recesses (type FD) and undercuts
(type E, F, G) cannot be machined with a standard finishing
tool, one form element after the other is skipped. TURN
PLUS starts a renewed attempt to machine the remaining
contour with the standard tool. Subsequently, the skipped
form elements are machined individually with a suitable
finishing tool.
 Standard/Full-surface – external/longitudinal [FAL]
 Standard/Full-surface – internal/longitudinal [FIL]
 Standard/Full-surface – external/transverse [FAP]
 Standard/Full-surface – internal/transverse [FIP]
Machining of contour areas:
 Complete: TURN PLUS searches for an optimum tool for
machining the complete contour area.
 Standard:
 The machining operation is primarily executed with
standard finishing tools. Relief turns and undercuts are
machined with a suitable tool.
 If the standard finishing tool cannot be used for relief turns
and undercuts, TURN PLUS splits up the machining
operation into standard machining operations and
machining the form elements.
 If a division into standard machining and form-element
machining is not possible, TURN PLUS switches to "full-
surface machining."