Manufacturing > Milling > Corner Finishing > Milling Parameters Specific to Corner Finishing
  
Milling Parameters Specific to Corner Finishing
In addition to the common milling parameters, the following parameters control the tool path generated by a Corner Finishing NC sequence:
MAX_CUT_DEPTH
Defines the maximum cutting depth while machining corners. Corners with a cutting depth lower than this value are machined. This is an optional parameter and the default is a dash (-), that is, not used. Applicable only for shallow surfaces.
MIN_REST_AREA
Defines the minimum height for the area to be machined. Areas with a height lesser than this value are not machined. This is an optional parameter and the default is a dash (-), that is, not used.
1. Reference tool
2. Tool
3. MIN_REST_AREA
4. MAX_CUT_DEPTH
MAX_CORNER_ANGLE
Defines the maximum open angle for corners. Corners with an angle greater than MAX_CORNER_ANGLE are not machined. The default value is 165 degrees.
REST_AREA_OFFSET
Defines the offset value to be applied to the boundary of the remaining area. The default value is 0.
1. Remaining area used for tool path computation (final remaining area)
2. Computed remaining area surface
3. Computed remaining area surface
4. REST_AREA_OFFSET
SHALLOW_AREA_SCAN and STEEP_AREA_SCAN
Specifies the scanning algorithm for the shallow and steep areas, depending on how you specify the scan types. The options are:
PENCIL_CUT, MULTI_CUTS, SPIRAL_CUTS, and STITCH_CUTS (for SHALLOW_AREA_SCAN)
PENCIL_CUT, MULTI_CUTS, SPIRAL_CUTS, and Z_LEVEL_CUTS (for STEEP_AREA_SCAN)
PENCIL_CUT—Uses a single machining pass on the centerline. Creo NC calculates the tool path without considering the previous tool.
MULTI_PENCIL—Uses a set of motions parallel to the centerline and controlled by the scallop height or the step-over distance. The tool path starts from one side of the centerline and goes towards the other side of the centerline.
SLOPE_ANGLE, which is a threshold angle value dividing all the surfaces being machined into two areas, steep (near vertical) and shallow (near horizontal).
FINISH_OPTION, which specifies whether the steep areas, or shallow areas, or a combination of both are machined.
OVERLAP_ANGLE, which defines the extent of the overlap between the steep and shallow areas.
SPIRAL—Uses connected concentric loops that start along the perimeter of the area and move towards the center (if SPIRAL_SCAN_DIRECTION is OUTSIDE_IN), or vice-versa (if SPIRAL_SCAN_DIRECTION is INSIDE_OUT). The default is OUTSIDE_IN in which the tool starts machining from the edges and moves to the centre. The type of connections between the loops are either S-shaped (if SPIRAL_CONNECTION_TYPE is S_CONNECT) or vertical loop connections (if SPIRAL_CONNECTION_TYPE is LOOP_CONNECT). The default is S_CONNECT.
STITCH_CUT—Uses a cut motion normal to the centerline and controlled by the step-over distance or the scallop height. Applicable only for shallow surfaces.
1. Base intersection cut or centerline
2. Edges of uncut area left by the earlier tool
3. Cut motion normal to the centerline
Z_LEVEL—Uses a 2.5-axis tool path equivalent to Z-level machining and controlled by the STEEP_STEP_OVER parameter. If you have not defined STEEP_STEPOVER, the STEP_OVER value is used. Applicable only for steep surfaces.