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Cycle parameters – HEIDENHAIN TNC 128 (77184x-02) User Manual

Page 435

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RECTANGULAR STUD (Cycle 256)

17.3

17

TNC 128 | User's Manual HEIDENHAIN Conversational Programming | 5/2014

435

Cycle parameters

Machining operation (0/1/2) Q215: Define
machining operation:

0

: Roughing and finishing

1

: Only roughing

2

: Only finishing

Side finishing and floor finishing are only machined
when the specific allowance (Q368, Q369) is
defined
1st side length Q218: Stud length, parallel to the
reference axis of the working plane. Input range 0 to
99999.9999
Workpiece blank side length 1 Q424: Length of
the stud blank, parallel to the reference axis of the
working plane. Enter

Workpiece blank side length

1 greater than 1st side length. The TNC performs
multiple stepovers if the difference between blank
dimension 1 and finished dimension 1 is greater
than the permitted stepover (tool radius multiplied
by path overlap

Q370). The TNC always calculates a

constant stepover. Input range 0 to 99999.9999
2nd side length Q219: Stud length, parallel to the
minor axis of the working plane. Enter

Workpiece

blank side length 2 greater than 2nd side length.
The TNC performs multiple stepovers if the
difference between blank dimension 2 and finished
dimension 2 is greater than the permitted stepover
(tool radius multiplied by path overlap

Q370). The

TNC always calculates a constant stepover. Input
range 0 to 99999.9999
Workpiece blank side length 2 Q425: Length of
the stud blank, parallel to the minor axis of the
working plane. Input range 0 to 99999.9999
Depth Q201 (incremental): Distance between
workpiece surface and bottom of stud. Input range
-99999.9999 to 99999.9999
Stud position Q367: Position of the stud in
reference to the position of the tool when the cycle
is called:

0

: Tool position = stud center

1

: Tool position = left corner below

2

: Tool position = right corner below

3

: Tool position = right corner top

4

: Tool position = left top corner top

Plunging depth Q202 (incremental): Infeed per
cut. Enter a value greater than 0. Input range 0 to
99999.9999
Feed rate for milling Q207: Traversing speed of
the tool in mm/min while milling. Input range 0 to
99999.999 Input range 0 to 99999.999 alternatively
FAUTO, FU, FZ