5. AUTOMATIC OPERATION
B-64693EN-1/01
- 954 -
Reference item
Manual name
Item name
OPERATOR’S MANUAL (B-64694EN)
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5.11
EXACT STOP / EXACT STOP MODE / TAPPING MODE /
CUTTING MODE
Overview
NC commands can be used to control a feedrate in continuous cutting feed blocks as described below.
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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 at cutting feed.
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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 until G62 (automatic corner override), G63 (tapping
mode), or G64 (cutting mode), is commanded.
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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.
Tapping signal TAP<Fn001.5> is set to “1” during tapping mode. This G63 is valid until G61 (exact stop
mode), G62 (automatic corner override), or G64 (cutting mode) is commanded.
NOTE
Spindle override is enabled during tapping mode.
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Cutting Mode (G64)
When G64 is commanded, deceleration at the end point of each cutting feed block thereafter is not
performed and cutting goes on to the next block. This command is valid until G61 (exact stop mode), G62
(automatic corner override), or G63 (tapping mode) is commanded. However, in G64 mode, feed rate is
decelerated to zero and in-position check is performed in the following case;
1) Positioning mode (G00, G60)
2) Block with exact stop check (G09)
3) Next block is a block without movement command
*1 The term in-position indicates that the servo motor reaches in a range of positions specified by a
parameter. See Section “In-position check” and “In-position check independently of feed/rapid
traverse” for details.
NOTE
When the in-position check signal SMZ<Gn053.6> is set to “1”, cutting feed
decelerates at the end point of each block and an in-position check is performed
even in tapping mode or cutting mode.