3-Axis Surface Machining (SMG, MSM) - P2

General Issues

Probing The “Cycle OFF” NC Instruction has been specialized for axial, probing, and for lathe (machining operations generate respectively NC_AXIAL_CYCLE_OFF, NC_PROBING_CYCLE_OFF and NC_LATHE_CYCLE_OFF, by default they are all associated to CYCLE/OFF in the PPTable). It allows you to define a specific CYCLE OFF in the PPTable, for instance for Probing.

Important: If you have redefined the NC_CYCLE_OFF in the current PPTable, you must redefine the NC_AXIAL_CYCLE_OFF, NC_LATHE_CYCLE_OFF and NC_PROBING_CYCLE_OFF accordingly in the PPTable to avoid any behavior change.

Rework Area The generated rework area may be split if faces selected as “Part” belongs also to the body given as “check”.

Open Issues

None  

Documentation

Contour-Driven Parallel Contour Mode
  • Strategy side: Available in Parallel contour mode.
    • One Side: only one side of the guide is machined. This side is defined by the Stepover side parameter.
    • Both sides with opposite direction: The side given by the Stepover side is machined first, then the other side is machine, in the opposite direction.
    • Both sides with same direction: The side given by the Stepover side is machined first, then the other side is machine, in the same direction.
Note: Both sides options are available with Constant3D radial step over. They are not available with Constant2D and Via ScallopHeight.
  • Stepover side: starting with R20, for a given Stepover side (Left or Right), the direction remains the same, whatever faces your have selected. This was not the case previously. Therefore, the direction in R20 might be inverted compared to the direction in a previous release. Should that be the case, select the other Stepover side.
Roughing  - Limit Definition Limit Definition 
Defines what area of the part will be machined with respect to the limiting contour(s).
It can either be inside or outside. In the pictures below, there are three limiting contours on the rough stock.
The yellow areas will be machined.
Side to machine: Inside
Side to machine: Outside
The limiting contour is used to limit the cutting motions.
It does not avoid that approach or retract motions stay outside the limiting contour.
To keep approach and retract motions inside the limiting contour, we recommend that you define a check surface with holes or a mask.

With R20 release, the tool motion is added along the limit line on both sides, to remove residual material around the limit line and secures the machining on lower levels. Now, there is no collision between the residual material and tool holder and height of removed material is also not greater than the distance between levels. The machining trajectory is more secure because of these paths and removes residual material on both sides before machining the bottom.