Multiple Extended Grooving - Siemens SINUMERIK 808D User Manual

Parameter
External
groove/internal
groove/planar to
chuck/planar from
chuck
Contour angle
Flank angle 1
Flank angle 2
Dwell time at recess
base
Extended grooving
The machining sequence is as follows:
1. Starting from the current axis position, the first calculated groove position is approached (diagonally) in both axes, taking
into account the clearance distance and finishing allowance.
2. Executing the depth infeeds in the form of a roughing movement: each infeed depth is calculated internally so that firstly
the setting "m1" is not exceeded and secondly the infeed distance is kept uniform until the base of the groove is reached
(taking into account the final machining allowance). After each infeed, the tool is retracted by the clearance distance for
chip breaking.
3. When the base of the groove is reached for the first time, the tool is withdrawn from the material at the programmed
feedrate.
4. Now the width infeed is executed: the width offset is calculated cycle-internally, taking into account the tool width and the
groove width (length "l1") so that the machining is as uniform as possible.
5. Depth infeeds are then alternated as roughing motion and width offset until the entire groove contour has been cleared.
The only difference between the first depth infeed and the others is that when the base of the groove is reached, the tool
is retracted by the clearance distance and then moved out of the groove in rapid traverse.
6. Finishing is started immediately after the roughing operation. The entire contour is traversed from both sides to the
center of the base of the groove at the feedrate specified in the input fields of machining technology data before the start
of the cycle.
7. Finally, the original position of the axes before the start of machining is approached diagonally.
4.4.5.4

Multiple extended grooving

Functionality
Note
The multiple extended grooving function supplements the extended grooving option. This function can be used only if all the
parameters for the extended grooving function have been assigned.
44
Description
In this toggle field you can select the type of groove machining required whereby the
respective selection is displayed in a diagram on the screen.
A0 This input value specifies the angle of the incline where the groove is to be executed.
A1 This input value determines the inclination of the first groove flank.
A2 This input value determines the inclination of the second groove flank.
dt Here you can enter the dwell time of the tool on the groove base.
Programming and Operating Manual (Manual Machine Plus (MM+), Turning)
01/2017