HEIDENHAIN CNC Pilot 4290 - Manual (Page 369)

HEIDENHAIN CNC PILOT 4290 357
7.5 Mac
hining P
a
ra
met
ers
Continued
7.5 Machining Parameters
Machining parameters are used by the work plan
generation (TURN PLUS) and various machining cycles.
1 – Global finished-part parameters (roughness/limit values)
All elements of the finished part are machined according to the ”ORA”
and ”ORW” parameter values. (Evaluation: Finishing cycle G890).
■ Type of roughness [ORA] – Type of surface roughness
■ 0: No roughness value
■ 1 – Rt: Peak-to-valley in [µm]
■ 2 – Ra: Mean roughness in [µm]
■ 3 – Rz: Determined peak-to-valley roughness in [µm]
■ 4 – Vr: Direct feed entry in [mm/rev]
■ Roughness values [ORW]: Roughness or feed rate values
■ Permissible inward copying angle [EKW]: Limiting angle for
recessing contour areas for distinguishing between turning and
recessing cycles.
■ EKW > mtw: Relief turn
■ EKW <= mtw: Undefined recess (no form element)
(mtw = contour angle).
2 – Global technology parameters
Tool selection, tool change, speed limitation
■ Tool off .. [WD] – When selecting a tool, TURN PLUS accounts for
the:
■ 1: Current turret assignment
■ 2: Current turret assignment in the first place, and the tool
database in the second place
■ 3: Tool database
■ TURN PLUS turret [RNR] – Precondition ”WD=1 or WD=2”. RNR
determines which turret assignment is used:
■ 0: Current turret assignment in Machine mode
■ 1: TURN PLUS-specific turret assignment (see ” 6.7.2 Setting Up a
Tool List”).
■ Traversing mode to tool change position [WP] – determines the
mode of approach and tool change position. The sequence in which
the axes are traversed is defined in the IWG or, for the AWG, in the
respective machining parameters.
■ 1: Approaching the tool change position in rapid traverse (G0).
IwG – Definition of approach mode and tool change position: ”Cycle
- Move to tool change point” menu item