3Basic Tool Orientation Example - Siemens SINUMERIK 828D Function Manual

W1: Tool offset
18.15 Examples
The position X17.678 Y0 Z1.536 is approached in N310.
N320 changes only the Z position to the value -8.464 as a result of the MOVT command. As only the table can be
rotated, the tool orientation remains unchanged parallel to the machine Z direction, even if the Z direction of the
active frame is rotated by 45 degrees.
N330 deletes the basic or system frame; thus the frame definition from N280 is undone.
In N340, TCOFR specifies that the toolholder with orientation capability is to be aligned according to the active
frame. Since a rotation is no longer active in N330 due to the PAROTOF command, the initial state is applied. The
frame offset becomes zero.
N350 thus approaches the position X10 X10 Z0 (= Z-13 + tool length). Note: Through the simultaneous
programming of both rotary axes A and B the actual position of the toolholder with orientation capability is made
to match that used in N340. The position approached by the three linear axes is dependent on this position,
however.
In N360, solid angles are used to define a plane whose intersecting lines in the X­Z and in the Y­Z plane each
form an angle of +45 degrees or -45 degrees with the X or Y axis. The plane defined in such a way therefore has
the following position: the surface normal points towards the solid diagonals.
N370 traverses to the position X20 Y0 Z0 in the new coordinate system. Since the tool is deselected with D0 at
the same time, there is no longer an additional offset in Z. Since the new X axis lies in the old X­Z plane, this
block reaches the machine position X14.142 Y0 Z-14.142.
N380 only traverses on the Y axis in the rotated coordinate system. This leads to a motion of all three machine
axes. The machine position is X5.977 Y16.330 Z-22.307.
N390 approaches a point on the new Z axis. Relative to the machine axes this is thus on the solid diagonal. All
three axes thus reach the position 11.547.
18.15.1.3 Basic tool orientation example
Basic orientation in the bisector
A milling tool is defined with length L1=10 whose basic orientation is in the bisector of the X­Z plane.
N10 $TC_DP1[1,1]=120
N20 $TC_DP3[1,1]=10
N30 $TC_DPV [1,1] = 0
N40 $TC_DPV3[1,1] = 1
N50 $TC_DPV4[1,1] = 0
N60 $TC_DPV5[1,1] = 1
N70 g17 f1000 x0 y0 z0 t1 d1
N80 movt=10
N80 m30
Description of example:
In N10 to N60, a milling tool is defined with length L1=10 (N20). The basic orientation is in the bisector of the X­Z
plane N40 to N60.
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Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions