Cutting Data Modification For Tools That Can Be Rotated; Function; Determination Of Angle Of Rotation - Siemens SINUMERIK 828D Function Manual

W1: Tool offset

18.7 Cutting data modification for tools that can be rotated

18.7 Cutting data modification for tools that can be rotated
18.7.1

Function

Using the function "cutting data modification for rotatable tools", the changed geometrical relationships, that are
obtained relative to the workpiece being machined when rotating tools (predominantly turning tools, but also
drilling and milling tools) can be taken into account.
18.7.2

Determination of angle of rotation

The actual rotation of the tool is always determined from a currently active, orientable toolholder (refer to Chapter
"Tool Holder with Orientation Capacity").
The angle of rotation of the tool holder with orientation capacity is normally (but not necessarily) defined with
theTCOFR command from an active frame. This method can be used to define the tool orientation independently
of the actual kinematics with which the tool is rotated, identically in each case with the help of two angles.
The two machine-independent orientation angles β (Beta) and γ (Gamma) are used to define the tool rotation. β
is the angle of rotation and the applicate (typically a B axis in G18) and γ a rotation around the ordinate (Typically
a C axis in G18). The rotation is first executed around Y, finally around β, i.e. the y axis is rotated by the β axis:
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Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions