247
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
Feed rate for pre-positioning
Q253: Traversing
speed of the tool when moving in and out of the
workpiece, in mm/min
U
Depth at front
Q358 (incremental value): Distance
between tool point and the top surface of the
workpiece for countersinking at the front of the tool
U
Countersinking offset at front
Q359 (incremental
value): Distance by which the TNC moves the tool
center away from the hole center
U
Countersink
Q360: Execution of the chamfer
0
= before thread machining
1
= after thread machining
U
Set-up clearance
Q200 (incremental value): Distance
between tool tip and workpiece surface
Summary of Contents for TNC 426
Page 3: ......
Page 4: ......
Page 8: ...IV...
Page 10: ...VI...
Page 26: ......
Page 27: ...1 Introduction...
Page 41: ...2 Manual Operation and Setup...
Page 54: ......
Page 55: ...3 Positioning with Manual Data Input MDI...
Page 59: ...4 Programming Fundamentals of NC File Management Programming Aids Pallet Management...
Page 122: ......
Page 123: ...5 Programming Tools...
Page 153: ...6 Programming Programming Contours...
Page 201: ...7 Programming Miscellaneous functions...
Page 226: ......
Page 227: ...8 Programming Cycles...
Page 366: ......
Page 367: ...9 Programming Subprograms and Program Section Repeats...
Page 381: ...10 Programming Q Parameters...
Page 424: ......
Page 425: ...11 Test run and Program Run...
Page 443: ...12 MOD Functions...
Page 472: ......
Page 473: ...13 Tables and Overviews...
Page 496: ......