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Cycle parameters, 6 univer sal drilling (cy c le 203) – HEIDENHAIN TNC 128 (77184x-01) User Manual

Page 399

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HEIDENHAIN TNC 128

399

16.6 UNIVER

SAL DRILLING (Cy

c

le

203)

Cycle parameters

Set-up clearance Q200 (incremental): Distance

between tool tip and workpiece surface. Input range
0 to 99999.9999

Depth Q201 (incremental): Distance between

workpiece surface and bottom of hole (tip of drill
taper). Input range -99999.9999 to 99999.9999

Feed rate for plunging Q206: Traversing speed of

the tool during drilling in mm/min. Input range 0 to
99999.999; alternatively FAUTO, FU

Plunging depth Q202 (incremental): Infeed per cut.

Input range 0 to 99999.9999. The depth does not
have to be a multiple of the plunging depth. The TNC
will go to depth in one movement if:

the plunging depth is equal to the depth

the plunging depth is greater than the depth and no
chip breaking is defined

Dwell time at top Q210: Time in seconds that the

tool remains at set-up clearance after having been
retracted from the hole for chip removal. Input range
0 to 3600.0000

Coordinate of workpiece surface Q203 (absolute):

Coordinate of the workpiece surface. Input range
-99999.9999 to 99999.9999

2nd set-up clearance Q204 (incremental): Coordinate

in the spindle axis at which no collision between tool
and workpiece (fixtures) can occur. Input range 0 to
99999.9999

Decrement Q212 (incremental): Value by which the

TNC decreases the plunging depth Q202 after each
infeed. Input range 0 to 99999.9999

X

Z

Q200

Q201

Q206

Q202

Q210

Q203

Q204

Q211

Q208