HEIDENHAIN CNC Pilot 4290 - Manual (Page 279)

HEIDENHAIN CNC PILOT 4290 267
6
.9
Assigning A
tt
ribut
es
6.9.1 Attributes for Workpiece Blanks
Define the ”type semifinished” (”Surface quality” dialog box):
■ Cast or forged workpiece blank: Working plan generation
according to the ”cast machining” strategy (first transversal – then
longitudinal roughing).
■ Preturned workpiece blank: Working plan generation after the
standard strategy. In addition to standard machining cycles,
contour-parallel roughing cycles are used.
■ ”Unknown” (or no attribute defined): Working plan generation
according to the standard strategy.
6.9 Assigning attributes
Attributes for Workpiece Blanks
These attributes influence the division into machining areas and the
selection of roughing cycles in the AWG.
Selection: ”Workpiece – Blank – Attribute”
Finished part attributes
After the contour of a finished part has been defined, individual
contour elements/contour sections can be assigned attributes. The
AWG and IWG evaluate the attributes for generating a working plan.
Selection: ”Workpiece – Finished part - Attribute”
6.9.2 Oversize
The oversize, e.g. grinding allowance, is retained after the machining
process has been completed. TURN PLUS distinguishes between:
■ Absolute oversize: Is ”final” – other oversizes are ignored.
■ Relative oversize: Applies additively to other oversizes.
Parameters
I:
Absolute oversize
Ii: Relative oversize
6.9.3 Feed rate/peak-to-valley height
Feed rate
The input value applies as finishing feed rate (see also ”
4.5.4 Auxiliary
Commands of the Contour Description”).
Feed rate reduction factor
The input value is multiplied by the current feed rate.