
5.AUTOMATIC OPERATION B-63323EN-1/03
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5.12 EXACT STOP/EXACT STOP MODE/TAPPING
MODE/CUTTING MODE
General
NC commands can be used to control a feedrate in continuous cutting
feed blocks as described below.
- Exact stop (G09)
The tool is decelerated in a block specifying G09, and an in-position
check (*1) is performed. When the feed motor falls in-position, the
tool is moved by the next block. This function may be used to produce
a sharp edge at the corner of a workpiece.
NOTE
An in-position check is performed to confirm that the
specified feedrate falls to 0 (producing no
acceleration/deceleration delay) upon deceleration.
Moreover, by setting bit 0 (CIP) of parameter No.
1000, the user can choose whether to check if the
machine position has reached a specified position
(that is, if the positional deviation is within a certain
range).
- Exact Stop Mode (G61)
When G61 is commanded, deceleration of cutting feed command at the
end point and in-position check is performed per block thereafter. This
G61 is valid till G62 (automatic corner override), G63 (tapping mode),
or G64 (cutting mode), is commanded.
- Tapping Mode (G63)
When G63 is commanded, feed rate override is ignored (always
regarded as 100%), and feed hold also becomes invalid. Cutting feed
does not decelerate at the end of block to transfer to the next block.
This G63 is valid till G61 (exact stop mode), G62 (automatic corner
override), or G64 (cutting mode) is commanded.
- Cutting Mode (G64)
When G64 is commanded, deceleration at the end point of each block
thereafter is not performed and cutting goes on to the next block. This
command is valid till G61 (exact stop mode), G62 (automatic corner
override), or G63 (tapping mode) is commanded.