CNC Machinist Calculator UltraHome › G-codes › Siemens 840D 828D › CYCLE99
CYCLE99 Thread turning cycle, Operate
Siemens 840D 828D G-code · Lathe
The thread cycle written by the SINUMERIK Operate and ShopTurn thread screen. It covers longitudinal, taper and face threads with thread tables, infeed type and multiple starts.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
CYCLE99(...)
Addresses
| Address | What it does |
|---|---|
Pitch and table | Pitch or thread table entry chosen in the input screen |
Start and end | Thread start point, end point and diameters |
Depth and cuts | Thread depth, first infeed or number of cuts, and spring passes |
Starts | Number of thread starts |
How it works
Non modal.
Example program
T3 D1 ; THREADING TOOL
G97 S800 M3 ; FIXED RPM
G0 X24 Z5 ; START POSITION
; CYCLE99 CALL IS CREATED IN THE THREAD TURNING SCREEN
…
G97 S800 M3 ; FIXED RPM
G0 X24 Z5 ; START POSITION
; CYCLE99 CALL IS CREATED IN THE THREAD TURNING SCREEN
…
The full 5-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Create and change the call only from the thread input screen. The parameter list is long and changes between versions.
- Use G97 before the cycle so the rpm stays constant.
Related codes
Every G-code for Siemens 840D 828D in your pocket. The app has the full example programs, search by number or shop word, a line decoder and calculators for tapping, threading and drilling.
Open CYCLE99 in the app All Siemens 840D 828D G-codes