Handling Of The Shift Amount (Q Command) At The Start Of Thread Cutting During The Thread Recutting Process; Calculating The Amount Of Correction For Thread Cutting Start Positions For Thread Cutting Blocks In Thread Recutting Mode - Mitsubishi Electric M800VW Series Programming Manual

M800V/M80V Series PLC Programming Manual (2/2)
14 PLC Help Function
14.3 Thread Recutting
14.3.2.7 Handling of the Shift Amount (Q Command) at the Start of Thread Cutting
During the Thread Recutting Process
When thread recutting is enabled, handling of the shift amount (Q command) at the start of thread cutting is changed with
"#1258 set 30/bit5".
 "#1258 set 30/bit5" = "0"
When there is a shift amount (Q command) at the start of thread cutting, the thread cutting start positions for the thread cutting
and thread recutting processes become the same. This is configured when performing the same thread cutting process while
thread recutting is enabled. This is enabled, for example, when restarting processing after stopping processing due to a tool
failure that occurs during thread cutting processing and replacing the tool.
 "#1258 set 30/bit5" = "1"
When there is a shift amount (Q command) at the start of thread cutting, the thread cutting start positions for the thread cutting
and thread recutting processes are not the same, and the shift amount (Q command) at the start of thread cutting becomes
the shifted position.
This is configured when reperforming processing such as adjustment of thread groove depth after the thread processing. This
is enabled for processing that includes adjustment of the thread cutting start position via the Q command on the basis of the
start position for the first thread processing. Do not issue the shift amount (Q command) at the start of thread cutting when
performing the same thread cutting for the thread recutting process.
G32 Z10.Q30.
Thread cutting start position
Thread cutting zero point
14.3.2.8 Calculating the Amount of Correction for Thread Cutting Start Positions for
Thread Cutting Blocks in Thread Recutting Mode
Use "#1258 set 30/bit6" to enable and disable the calculation of the amount of correction for thread cutting start positions from
the second thread cutting block while thread recutting is enabled.
 "#1258 set 30/bit6" = "0"
Corrects the spindle angle from stored position information while the initial thread cutting command is output by cycle
operation. The second and following thread cutting commands output during cycle operation use the amount of correction
obtained from the initial command. For this reason, the second and following thread cutting commands and thread recutting
processes can be performed when the state of the initial thread cutting command during cycle operation is stored.
 "#1258 set 30/bit6" = "1"
Corrects the spindle angle from stored position information while the thread cutting command is output during cycle operation.
For this reason, processing at the same finishing state for thread recutting can be performed when the finished state of
compound type fixed cycle for turning machining is stored. Note, however, that thread recutting processing cannot be
performed with the second and following thread cutting commands.
IB-1501668-B
30.
Thread recutting
Spindle end face
584
G32 Z10.Q 40 .
30.
40.
Thread recutting start position
Thread cutting start position
Thread cutting zero point