Drill And Thread Milling (Cycle78) - Siemens sinumerik 840D sl Operating Manual

Programming technology functions (cycles)
8.1 Drilling
Parameters Description
Yes
Technology 
–
–
–
–
No

Behavior the same as it was before the cycle was called
Exact stop (only 
for technology,
G601: Block advance for exact stop fine

yes)
G602: Block advance for exact stop coarse

G603: Block advance if the setpoint is reached

Behavior the same as it was before the cycle was called
Precontrol (only 
for technology,
FFWON: with precontrol

yes)
FFWOF: without precontrol

Behavior the same as it was before the cycle was called
Acceleration (only 
for technology,
SOFT: Jerk-limited (soft) acceleration of the axes

yes)
BRISK: Abrupt acceleration of the axes

DRIVE: Reduced axis acceleration

Speed controlled: Spindle for MCAL; speed controlled operation
Spindle (only for 
technology, yes)
Position controlled: Spindle for MCALL; position controlled operation

8.1.8

Drill and thread milling (CYCLE78)

Function
You can use a drill and thread milling cutter to manufacture an internal thread with a specific
depth and pitch in one operation. This means that you can use the same tool for drilling and
thread milling, a change of tool is superfluous.
The thread can be machined as a right- or left-hand thread.
Approach/retraction
1. The tool traverses with rapid traverse to the safety clearance.
2. If pre-drilling is required, the tool traverses at a reduced drilling feedrate to the predrilling
266
Exact stop
Precontrol
Acceleration
Spindle
depth defined in a setting data (ShopMill/ShopTurn). When programming in G code, the
predrilling depth can be programmed using an input parameter.
Machine manufacturer
Please also refer to the machine manufacturer's instructions.
Operating Manual, 07/2010, 6FC5398-8CP40-0BA0
Unit
Turning