Reaming (Cycle85) - Siemens sinumerik 840D sl Operating Manual

Parameters Description
Face C
Machining 
surface
Face Y

(only for
Peripheral surface C

ShopTurn)
Peripheral surface Y

Please note that when machining in the face C and peripheral surface C planes,
clamping only remains active for the drilling operation. On the other hand, when
machining in the face Y and peripheral surface Y planes, clamping is modal, i.e. it
remains active until the machining plane is changed.
Shank (drilling depth in relation to the shank)
Drilling depth 
The drill is inserted into the workpiece until the drill shank reaches the value
programmed for Z1. The angle entered in the tool list is taken into account.
Tip (drilling depth in relation to the tip)

The drill is inserted into the workpiece until the drill tip reaches the value
programmed for Z1.
Note: If it is not possible to define an angle for the drill in the tool management, it will
not be possible to select tip or shank (always tip, 0 field)
Z1 Drilling depth (abs) or drilling depth in relation to Z0 (inc)
It is inserted into the workpiece until it reaches Z1. - (for tip centering only)
(only for G code)
Z1 (face) or Drilling depth (abs) or drilling depth in relation to Z0 of X0 (inc)
X1 (peripheral
The tool is inserted until Z1 or X1 is reached. - (for tip centering only)
surface)
(only for
ShopTurn)
Dwell time (at final drilling depth) in seconds
DT 
Dwell time (at final drilling depth) in revolutions

8.1.4

Reaming (CYCLE85)

Function
With the "Reaming" cycle, the tool is inserted in the workpiece with the programmed spindle
speed and the feedrate programmed at F.
If Z1 has been reached and the dwell time expired, the reamer is retracted at the
programmed retraction feedrate to the retraction plane.
Approach/retraction
1. The tool moves with G0 to safety clearance of the reference point.
2. The tool is inserted into the workpiece with the programmed feedrate F until it reaches
3. Dwell time DT at final drilling depth.
4. Retraction to retraction plane with programmed retraction feedrate FR.
Turning
Operating Manual, 07/2010, 6FC5398-8CP40-0BA0
the final depth Z1.
Programming technology functions (cycles)
8.1 Drilling
Unit
mm
mm
s
rev
255