25
2.5 Tilting the w
o
rk
ing plane
n
Machines with swivel heads
n
You must bring the tool into the desired position for machining by
positioning the swivel head, for example with an L block.
n
The position of the transformed tool axis changes in relation to the
machine-based coordinate system. Thus if you rotate the swivel
head of your machine—and therefore the tool—in the B axis by
90° for example, the coordinate system rotates also. If you press
the Z+ axis direction button in the Manual Operation mode, the
tool moves in X+ direction of the machine-based coordinate
system
n
In calculating the transformed coordinate system, the TNC
considers both the mechanically influenced offsets of the
particular swivel head (the so-called “translational” components)
and offsets caused by tilting of the tool (3-D tool length
compensation).
Traversing the reference points in tilted axes
With tilted axes, you use the machine axis direction buttons to cross
over the reference points. The TNC interpolates the corresponding
axes. Be sure that the function for tilting the working plane is active in
the Manual Operation mode and the actual angle of the tilted axis was
entered in the menu field.
Setting the datum in a tilted coordinate system
After you have positioned the rotary axes, set the datum in the same
way as for a non-tilted system. The TNC then converts the datum for
the tilted coordinate system. If your machine tool features axis control,
the angular values for this calculation are taken from the actual
position of the rotary axis.
You must not set the datum in the tilted working plane if
in machine parameter 7500 bit 3 is set. If you do, the TNC
will calculate the wrong offset.
If your machine tool is not equipped with axis control, you
must enter the actual position of the rotary axis in the
menu for manual tilting: The actual positions of one or
several rotary axes must match the entry. Otherwise the
TNC will calculate an incorrect datum.
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: ......