251
8.3 Cy
cles f
o
r Dr
illing, T
a
pping and Thr
ead Milling
U
Nominal diameter
Q335: Nominal thread diameter
U
Thread pitch
Q239: Pitch of the thread. The algebraic
sign differentiates between right-hand and left-hand
threads:
+
= right-hand thread
–
= left-hand thread
U
Thread depth
Q201 (incremental value): Distance
between workpiece surface and root of thread
U
Threads per step
Q355: Number of thread
revolutions by which the tool is offset, see figure at
lower right
0
= one 360° helical path to the depth of
thread
1
= continuous helical path over the entire length of
the thread
>1
= several helical paths with approach and
departure; between them, the TNC offsets the tool by
Q355, multiplied by the pitch
U
Feed rate for pre-positioning
Q253: Traversing
speed of the tool when moving in and out of the
workpiece, in mm/min
U
Climb or up-cut
Q351: Type of milling operation with
M03
+1
= climb milling
–1
= up-cut milling
Содержание TNC 426
Страница 3: ......
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Страница 8: ...IV...
Страница 10: ...VI...
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Страница 27: ...1 Introduction...
Страница 41: ...2 Manual Operation and Setup...
Страница 54: ......
Страница 55: ...3 Positioning with Manual Data Input MDI...
Страница 59: ...4 Programming Fundamentals of NC File Management Programming Aids Pallet Management...
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Страница 123: ...5 Programming Tools...
Страница 153: ...6 Programming Programming Contours...
Страница 201: ...7 Programming Miscellaneous functions...
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Страница 227: ...8 Programming Cycles...
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Страница 367: ...9 Programming Subprograms and Program Section Repeats...
Страница 381: ...10 Programming Q Parameters...
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Страница 425: ...11 Test run and Program Run...
Страница 443: ...12 MOD Functions...
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Страница 473: ...13 Tables and Overviews...
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