Siemens SINUMERIK 802D sl Servisní příručka stáhnout pdf (Strana 74)

Manual machining

5.4 Manual machining using cycles (functions)

Manual Machine Plus Turning

74 Programming and Operating Manual, 06/2009, 6FC5398-6CP10-1BA0

Parameter Description

Finishing allowance m2 Finishing allowance perpendicular to the contour.

External

groove/internal

groove/planar to

chuck/planar from

chuck

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.

Contour angle A0 This input value specifies the angle of the incline where the groove is to be executed.

Flank angle 1 A1 This input value determines the inclination of the first groove flank.

Flank angle 2 A2 This input value determines the inclination of the second groove flank.

Dwell time at recess

base

dt Here you can enter the dwell time of the tool on the groove 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 When the base of the groove is reached for the first time, the tool is withdrawn from the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 “Technology Data” screen before the start of the cycle.

7. Finally, the original position of the axes before the start of machining is approached

diagonally.

1 2 ... 69 70 71 72 73 74 75 76 77 78 79 ... 129 130

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