Deep-Hole Drilling (Cycle83) - Siemens SINUMERIK 840D sl Operating Manual

8.1.6

Deep-hole drilling (CYCLE83)

Function
With the "Deep-hole drilling" cycle, the tool is inserted in the workpiece with the programmed
spindle speed and feedrate in several infeed steps until the depth Z1 is reached. The
following can be specified:
● Number of infeed steps constant or decreasing (via programmable degression factor)
● Chip breaking without lifting or swarf removal with tool retraction
● Feedrate factor for 1st infeed to reduce the feedrate or increase the feedrate (e.g. if a
● Dwell times
● Depth in relation to drill shank of drill tip
Clamping the spindle
For ShopTurn, the "Clamp spindle" function can be set up by the machine manufacturer.
Approach/retraction during chipbreaking
1. The tool moves with G0 to safety clearance of the reference point.
2. The tool drills with the programmed spindle speed and feedrate F = F · FD1 [%] up to the
3. Dwell time at drilling depth DTB.
4. The tool is retracted by retraction distance V2 for chipbreaking and drills up to the next
5. Step 4 is repeated until the final drilling depth Z1 is reached.
6. Dwell time at final drilling depth DT.
7. The tool retracts to the retraction plane at rapid traverse.
Turning
Operating Manual, 03/2013, 6FC5398-8CP40-3BA1
hole has already be predrilled)
Machine manufacturer
Please refer to the machine manufacturer's specifications.
1st infeed depth.
infeed depth with programmed feedrate F.
Programming technology functions (cycles)
8.1 Drilling
289