HEIDENHAIN MANUALPLUS 620 - Attributes for Superimposed Elements G39-Geo

HEIDENHAIN MANUALplus 620 199
4.5 Attributes for Contour Description
Attributes for superimposed elements G39-Geo
G39 influences the finishing feed rate of G890 with the form
elements:
 Chamfers/rounding arcs (for connecting basic elements)
 Undercuts
 Recesses
Affected machining: Special feed rate, surface roughness, additive D
compensation, equidistant oversizes.
Parameters
F Feed per revolution
V Type of surface roughness (see also DIN 4768)
 1: General surface roughness (profile depth) Rt1
 2: Surface roughness Ra
 3: Surface roughness Rz
RH Surface roughness [µm, inch mode: µinch]
D Number of the additive compensation (901 <= D <= 916)
P Oversize (radius)
H P applies as an absolute or additive value (default: 0)
 0: P replaces G57/G58 oversizes
 1: P is added to G57/G58 oversizes
E Special feed factor (default: 1)
Special feed rate = active feed rate * E
 Use surface roughness (V, RH), finishing feed rate (F)
and special feed rate ("E") alternately!
 G39 is a non-modal function.
 Program G39 before the contour element for which it is
intended.
 G50 preceding a cycle (MACHINING section) cancels a
finishing oversize programmed for that cycle with G39.