PROGRAMMING
19. HIGH SPEED CUTTING
FUNCTIONS
B–64124EN/01
378
This function is designed for high–speed precise machining. With this
function, the delay due to acceleration/deceleration and the delay in the
servo system which increase as the feedrate becomes higher can be
suppressed.
The tool can then follow specified values accurately and errors in the
machining profile can be reduced.
This function becomes effective when advanced preview control mode is
entered.
For details, refer to the relevant manual published by the machine tool
builder.
P1 : Turn on advanced preview control mode.
P0 : Turn off advanced preview control mode.
G08 P_
In advanced preview control mode, the following functions are available:
(1) Linear acceleration/deceleration before interpolation
(2) Automatic corner deceleration function
For details on the above functions, see the Connection Manual (Function)
(B-64113EN-1). Each function, specific parameters are provided.
Advanced preview control mode is canceled by reset.
Specify G08 code only in a block.
In the advanced preview control mode, the functions listed below can be
specified.
NOTE
To use a function other than the following functions, turn the
advanced preview control mode off, specify the desired
function, then turn the mode on again.
⋅ Inverse time feed
⋅ Axis control by the PMC
(Bits 4 (G8R) and 3 (G8C) of parameter No. 8004 can be set to also use
this function in the advanced preview control mode.)
⋅ Single direction positioning
⋅ Polar coordinate command
⋅ Helical interpolation
⋅ Rigid tapping
(Bit 5 (G8S) of parameter No. 1602 can be set to also use this function
in the look–ahead control mode. The serial spindle parameters must
also be set.)
19.2
ADVANCED PREVIEW
CONTROL (G08)
Format
Explanations
D Available functions
D Reset
Limitations
D G08 command
D Functions that can be
specified