HEIDENHAIN CNC Pilot 4290 Description of the Y axis - Manual (Page 13)

HEIDENHAIN CNC PILOT 4290 13
2.2.1
Contours
in
the
XY
Plane
(Front
and
Back)
Circular pattern XY plane G472 Geo
G472 defines a circular pattern in the XY plane. G472 affects the
figure defined in the following block (G370..375, G377).
Programming notes
■ Program the hole/figure in the following block without a center –
exception: Circular slot. If you program the ”center of curvature
X, Y” of a circle, it is added to the pattern position (see User's Ma-
nual, section 4.7.9 ”Circular Pattern with Circular Slots”).
■ The milling cycle (MACHINING section) calls the hole/figure in the
following block - not the pattern definition.
Parameters
Q: Number of figures
K: Pattern diameter
A: Starting angle – position of the first figure (reference: positi-
ve X axis) – default: 0°
W: Ending angle – position of the last figure (reference: positi-
ve X axis) – default: 360°
Wi: Angle between two figures
V: Direction (orientation) – default: 0
■ V=0 – without W: Distribution over complete circle
■ V=0 – with W: Distribution over long arc
■ V=0 – with Wi: Algebraic sign of Wi defines the direction
(Wi<0: Pattern in clockwise direction)
■ V=1 – with W: Pattern in clockwise direction
■ V=1 – with Wi: Pattern in clockwise direction (algebraic
sign of Wi has no effect)
■ V=2 – with W: Pattern counterclockwise
■ V=2 – with Wi: Pattern counterclockwise (algebraic sign of
Wi has no effect)
X, Y: Center of pattern (X radius dimension)
H: Position of figures – default: 0
■ H=0: Normal position – figures are rotated about the
circle center (rotation)
■ H=1: Original position – position of figure remains
unchanged with respect to coordinate system (translation)
Y_4290BH.pm6 08.03.2005, 08:35 13