Detailed Description; Method Of Operation; Configuring Thread Recutting Spindle Numbers/Thread Recutting Lead Axis Names - Mitsubishi Electric M800VW Series Programming Manual

M800V/M80V Series PLC Programming Manual (2/2)
14 PLC Help Function
14.3 Thread Recutting
To perform the thread recutting operation, enable thread recutting and execute the program after describing the thread groove
positions.
The are two methods of thread recutting, which can be switched using parameters.
Method
HMI method of operation
Ladder method of operation
This chapter describes the ladder method of operation.

14.3.2 Detailed Description

14.3.2.1 Method of Operation

Turn ON "#1258 set 30/bit4" to enable thread recutting via ladder configurations.
Refer to the "PLC Interface Manual" for more information on R register signals.
(1) Install the workpiece to be processed with thread recutting to the spindle that will perform the thread recutting.
(2) Set the R2567 (encoder selection) with the number of the spindle that will perform the thread recutting.
(3) Set the R2626 (thread recutting command) with the lead axis number (bit8 through bitF) and the storage (bit0) for the
spindle that will perform the thread recutting.
(4) Use manual mode to move the tip of the cutting tool that will perform the thread recutting up to the thread groove in the
workpiece.
Spindle position
(5) Turn ON the R2626 (thread recutting command) command execution bit (bit7) and store the thread recutting position.
-> Bit0 in R648 (thread recutting status) turns ON if operation completes successfully.
If an error occurs, bit7 in R648 (thread recutting status) and the bit corresponding to the error turns ON.
(6) After confirming R648 (thread recutting status), turn OFF the R2626 (thread recutting command) command execution bit
(bit7).
-> Turning OFF the command execution bit (bit7) turns OFF R648 (thread recutting status).
(7) Turn ON the thread recutting function enable bit (bitF) in R2627 (thread recutting execution operation). BitF in R649
(thread recutting execution status) turns ON if the thread recutting position is stored.
(8) Disengage the thread cutting tool from the workpiece and then start the program to perform the thread recutting process
via cycle operation or a resume search operation to being processing. As a result, the same screw processing as that for
the original screws can be performed.
Turn OFF the thread recutting function enable bit (bitF) in R2627 (thread recutting execution operation) after the thread
cutting process completes. BitF in R649 (thread recutting execution status) turns OFF again when this is turned OFF.
14.3.2.2 Configuring Thread Recutting Spindle Numbers/Thread Recutting Lead Axis
Names
Configure the lead axis number in R2626 (thread recutting command) and spindle number in R2567 (encoder selection)
before storing the thread recutting position. If the lead axis number in R2626 (thread recutting command) and spindle number
in R2567 (encoder selection) are changed while the thread recutting position is stored, the spindle and lead axis will perform
the thread recutting.
Change parameter
#1258 set 30(PR)
bit4=0 Use the HMI to set the thread groove positions and start recutting.
bit4=1 Use the ladder to set the thread groove positions and start recutting.
Tool
Machine
position (Z)
Overview of operation
581 IB-1501668-B