Heidenhain TNC 410 User Manual download pdf (Page 182)

169HEIDENHAIN TNC 410

ROUGH-OUT (Cycle 6)

Process

1 The TNC positions the tool in the working plane above the first

cutting point, taking the finishing allowance into consideration.

2 The TNC moves the tool at the feed rate for plunging to the first

plunging depth.

The contour is fully rough-milled (see figure at top right):

1 The tool mills the first subcontour at the programmed feed rate,

taking the finishing allowance in the machining plane into

consideration

2 Further depths and further subcontours are milled by the TNC in

the same way

3 The TNC moves the tool in the spindle axis to the set-up

clearance and then positions it above the first cutter infeed point

in the machining plane.

Rough out pocket (see figure at center right):

1 After reaching the first plunging depth, the tool mills the contour

at the programmed feed rate paraxially or at the entered roughing

angle.

2 The island contours (here: C/D) are traversed at set-up clearance

3 This process is repeated until the entered milling depth is

reached.

Before programming, note the following:

With MP7420.0 and MP7420.1 you define how the TNC

should machine the contour (see section ”15.1 General

User Parameters”).

Program a positioning block for the starting point in the

tool axis (set-up clearance above the workpiece surface).

This cycle requires a center-cut end mill (ISO 1641) or

pilot drilling with Cycle 15.

8.6 SL Cycles

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Heidenhain TNC 410 User Manual Page 182