HEIDENHAIN CNC Pilot 4290 - Manual (Page 337)

HEIDENHAIN CNC PILOT 4290 325
6.16.2 Cutting Parameters
To determine the cutting parameters, TURN PLUS uses the
■ Workpiece material (program head)
■ Cutting material (tool parameters)
■ Machining type (for the IWG: primary machining operation
selected; for the AWG: primary machining operation from the
machining sequence)
The values determined are multiplied by the correction factors which
depend on the respective tool (see ”
8.3 Database for Technology
Parameters (Cutting Values)” and ” 8.1.2 Tool Data”).
Note for roughing and finishing operations:
■ Main feed rate when the main cutting edge is used.
■ Secondary feed rate when the secondary cutting edge is used.
For milling operations, the following applies:
■ Main feed rate for operations in the milling plane
■ Secondary feed rate for infeed movements
For threading, drilling and milling operations, the cutting speed is
converted into rotational speed.
6.16.3 Coolant
Depending on the workpiece material, cutting material and
machining operation, define in the technology database whether
coolant is used.
AWG
If you have specified that coolant is to be used, the AWG activates
the coolant circulation for the respective machining block. If high-
pressure coolant circulation is used, the AWG generates a
corresponding M function.
When a fixed turret assignment (see machining parameter 2) is used,
each tool can be assigned high-pressure/normal-pressure coolant
circulations (selection: ”Prepare - Tool list – Set up list”). The AWG
activates the respective coolant circulations as soon as the tool is
used.
IWG
The IWG controls coolant circulation in the same way as the AWG.
Alternately, you can define coolant circulation and pressure stage for
the current machining block in the cutting data.
6.16 Mac
hining Inf
or
mation