HEIDENHAIN CNC Pilot 4290 - Manual (Page 374)

7 Parameters 362
7.5 Mac
hining P
a
ra
met
ers
The finished-part area can be assigned allowances:
■ Type of allowance [RAA]
■ 16: Different longitudinal/transverse allowances – individual
allowances are not considered
■ 144: Different longitudinal/transverse allowances – individual
allowances are considered
■ 32: Equidistant allowance, individual allowances are not
considered
■ 160: Equidistant allowance - individual allowances are considered
■ Equidistant or longitudinal [RLA]: Equidistant allowance or
longitudinal allowance
■ None or transverse [RPA]: Transverse allowance
Roughing – Machining analysis
TURN PLUS uses the PLVA/PLVI parameters to define whether a
roughing area is to be rough-machined longitudinally or transversely.
■ Transverse/longitudinal ratio - external [PLVA]
■ PLVA <= AP/AL: Longitudinal machining
■ PLVA > AP/AL: Transverse machining
■ Transverse/longitudinal ratio, internal [PLVI]
■ PLVI <= IP/IL: Longitudinal machining
■ PLVI > IP/IL: Transverse machining
■ Minimum transverse length [RMPL] (radius value): defines
whether the front transverse element of a finished part will have the
external contour roughed transversely.
■ RMPL > l1: Without additional transverse roughing
■ RMPL < l1: With additional transverse roughing
■ RMPL = 0: Special case
■ Transverse angle variation [PWA]: The first front element is
declared a transverse element when it is within +PWA and –PWA.
Roughing – Traverse from/to tool change position
■ Approach, external roughing [ANRA]
■ Approach, internal roughing [ANRI]
■ Depart, external roughing [ABRA]
■ Depart, internal roughing [ABRI]
Entries for retracting a tool:
■ 1: Simultaneous, X and Z direction
■ 2: First X direction, then Z
■ 3: First Z direction, then X
■ 6: Coupled motion, first X, then Z
■ 7: Coupled motion, first Z, then X
Approach and departure are in rapid traverse (G0).