
13. SETTING DATA
B–62444E–1/04
OPERATION
204
NOTE
1 The cutting conditions for general–purpose tools need to be
specified when cutting conditions for bar machining or
pattern repeating are automatically determined.
Enter the following three items in the cutting condition data
for general–purpose tools:
· One of the three tool material types
· Either rough machining or finish machining
· One of the eight (or 24) workpiece material types
When a workpiece material can be selected from 24 types,
pressing the [WORK MATERL] soft key displays data on
subsequent 16 types of workpiece materials.
(2) Cutting condition data for finish machining
The feed amount for finish machining with a general–purpose tool
is calculated based on the surface roughness using the following
formula:
F =
8Rµ
1000
F : Feed amount
R : Radius of a tool tip
µ : Surface roughness
That is, the larger the radius of the tool, the larger the feed amount. For
a tool with a large radius, such as round nose tools, therefore, a clamp
value for the feed amount needs to be set in the cutting condition data for
finish machining with a general–purpose tool.