Siemens SINUMERIK 802D sl Manual de Serviço descarregar pdf (Página 67)

Manual machining

5.4 Manual machining using cycles (functions)

Manual Machine Plus Turning

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

Parameter Description

Groove depth t This value is the groove depth which together with the value for "Diameter d" specifies

the absolute position of the base of the groove.

Chamfer/radius F1 Depending on the option selected, this value forms either an input radius (display

"Radius RND") or an input chamfer (display "Chamfer CHF") of less than 45

on both

sides of the groove. You can toggle between RND / CHF using the toggle key. An input

value of 0.0 switches this function off.

Chamfer/radius F2 Depending on the option selected, this value forms either a radius (display "Radius

RND") or a chamfer (display "Chamfer CHF") of less than 45

on both sides of the

groove as the transition to the base of the groove. You can toggle between RND / CHF

using the toggle key. An input value of 0.0 switches this function off.

Max. infeed depth m1 Enter the maximum infeed depth for roughing during grooving. The cycle’s internal

infeed calculation ensures that this input value is not exceeded during machining.

Finishing allowance m2 Finishing allowance perpendicular to the contour.

Outer groove/inner

groove

In this toggle field you can select whether an internal or an external groove is required.

The selection is indicated by a diagram on the screen.

Groove cycle - single

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. Execute the depth infeeds as a roughing motion in the transverse axis (X axis): 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 When the base of the groove is reached for the first time, the tool is withdrawn from the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. This is followed by the width infeed in the longitudinal axis: the width offset is calculated

internally, taking into account the tool width (length "l2") 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.

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