Boring (Cycle86); Function - Siemens SINUMERIK 840D sl Operating Manual

Programming technological functions (cycles)
8.1 Drilling
8.1.6

Boring (CYCLE86)

8.1.6.1

Function

Function
With the "Boring" cycle, the tool approaches the programmed position in rapid traverse,
allowing for the retraction plane and safety clearance. It is then inserted into the workpiece at
the feedrate programmed under F until it reaches the programmed depth (Z1). There is an
oriented spindle stop with the SPOS command. After the dwell time has elapsed, the tool is
retracted either with or without lift of the tool.
Lift
For "lift off contour", the retraction distance D and the tool orientation angle α can either be
defined via machine data or in the parameter screen. If both parameters are pre-assigned
via machine data, they do not appear in the parameter screen.
NOTICE
The "Boring" cycle can be used if the spindle to be used for the boring operation is
technically able to go into position-controlled spindle operation.
Approach/retraction
1. The tool moves with G0 to safety clearance of the reference point.
2. Travel to the final drilling depth with G1 and the speed and feedrate programmed before
3. Dwell time at final drilling depth.
4. Oriented spindle hold at the spindle position programmed under SPOS.
5. With the "Lift" selection, the cutting edge retracts from the hole edge with G0 in up to
6. Retraction with G0 to the safety clearance of the reference point.
7. Retraction to retraction plane with G0 to drilling position in the two axes of the plane
284
Machine manufacturer
Please refer to the machine manufacturer's specifications.
the cycle call.
three axes.
(coordinates of the hole center point).
Operating Manual, 09/2011, 6FC5398-7CP40-2BA0
Milling