
A-79348E
Title
Draw
No.
70/88
page
FANUC Series 30i-MODEL A
Tool center point control
for 5-axis machining
Ed. Date Design Description
Date Jan.16.’04 Design. Apprv.
# 7 HEL In type 2 of tool center point control for 5-axis machining, when the tool is
tilted in the advancing direction by the Q command, a helical interpolation
block is executed as follows:
0: The tool is tilted in a direction tangent to the arc (at the end of the
block).
1: The tool is tilted in the advancing direction (at the end of the block)
including the helical axis.
#7 #6 #5 #4 #3 #2 #1 #0
19665 SVC SPR
[Input type] Parameter input
[Data type] Bit path
# 4 SPR The controlled point is shifted by:
0: Automatic calculation.
1: Using parameter No. 19667.
SVC (bit 5 of
parameter
No. 19665)
SPR (bit 4 of
parameter
No. 19665)
Shift of controlled point
0 - Shift is not performed as not done conventionally.
1 0
The controlled point is shifted according to the result of the following automatic
calculation:
- (Intersection offset vector between the tool axis and the first rotation axis of
the tool + intersection offset vector between the second and first rotation axes of
the tool + tool holder offset (parameter No. 19666))
(See the figure below.)
1 1
The controlled point is shifted.
As the shift vector, the vector set in parameter No. 19667 is used.
Shift of controlled point
Tool length offset
Tool holder offset
Controlled-point shift vector
D
E
Tool center point
Controlled point
Second rotary axis of tool
F
First rotary axis of tool
[Controlled-point shift vector when automatically calculated]
# 5 SVC The controlled point is:
0: Not shifted.
1: Shifted.
The method of shifting is specified by bit 4 (SPR) of parameter No. 19665.