
3.INTERPOLATION FUNCTION NC FUNCTIONS B-63782EN/01
- 38 -
3.6 HELICAL INTERPOLATION B (G02,G03)
Helical interpolation B allows the tool to move in helically. This can
be done by specifying the circular interpolation command together with
up to four axes.
The command format for helical interpolation B consists of the
command format for normal helical interpolation and move commands
for two axes. As with normal helical interpolation, the feedrate of
helical interpolation B is controlled so that the feedrate of circular
interpolation can achieve the specified feedrate. (see II-3.5)
Bit 2 (HTG) of parameter No. 1401 can be used to specify whether the
speed command specifies the feedrate along the tangential line of the
arc on the plane, or the feedrate along the tangential line of the actual
tool path, including movement along the linear axis.
Format
Synchronously with arc of XpYp plane
G02 I_J_
G17 Xp_Yp_
α
αα
α_β
ββ
β_γ
γγ
γ_δ
δδ
δ_F_ ;
G03 R_
Synchronously with arc of ZpXp plane
G02 K_I_
G18 Zp_Xp_
α
αα
α_β
ββ
β_γ
γγ
γ_δ
δδ
δ_F_ ;
G03 R_
Synchronously with arc of YpZp plane
G02 J_K_
G19 Yp_Zp_
α
αα
α_β
ββ
β_γ
γγ
γ_δ
δδ
δ_F_ ;
G03 R_
α
αα
α, β
ββ
β, γ
γγ
γ, δ
δδ
δ : Any one axis where circular interpolation is
not applied.
Up to four other axes can be specified.