Planar Faces

The Planar Faces GCD Type includes one or more PlanarFace GCDs, each representing any flat surface to be finished. Depending on the orientation of the setup axis with the surface, this GCD may be machined by face milling, side milling, or ballnose finishing (kellering). Under some conditions, finish machining is assumed to be combined with bulk machining. Under other conditions of little or no bulk machining, separate finish machining is required. Tools normal to the surface are assumed to perform facing. Tools parallel to the surface are assumed to perform side milling. Finally, tools oblique to the surface are assumed to perform kellering. Knowing the normal to the face and the associated setup axis direction, aPriori can compute the required finishing process. These GCDs are available for the Casting and Machining process groups. The GCD details include:

Cost drivers		Description
GCD	Name	The name and number that identifies the GCD. This information is an identifier only and is not used in any cost calculation.
Properties	Finished Area (mm2)	The area that requires finishing machining.
	Max Tool Diameter (mm)	For surfaces, this is the largest tool diameter entering from a given setup axis without touching other part surfaces. If there is no limiting diameter, Max Tool Diameter = -1. For pockets and bulk removal, this is the diameter of the of the sphere used to calculate the pocket or bulk removal skin.
	Tool Reach (mm)	The minimum tool reach required to contact the bottom surface from the part exterior in the direction of the setup axis. For an exterior surface, Tool Reach = 0.
	Bend Diameter (mm)	The bend diameter of the surface. The surface’s smallest positive curvature (edges curved toward viewer). If there is no positive curvature, Bend Diameter = -1.
	Tolerance/Profile of Surface (mm)	The most constraining tolerance among the dimensions defining the GCD. You can view it as a +/- tolerance. Tolerance is persisted and computed as a total tolerance by the system. Note: If set to <unspecified>, aPriori assumes that the chosen manufacturing process and operations have sufficient tolerance capability to manufacture the GCD.
	Roughness (µm)	The average roughness of the GCD surface. Note If set to <unspecified>, aPriori assumes that the chosen manufacturing process and operations have sufficient surface finish capability to manufacture the GCD.
	Flatness (mm)	The flatness tolerance of the GCD surface. Note If set to <unspecified>, aPriori assumes that the chosen manufacturing process and operations have sufficient tolerance capability to manufacture the GCD.
	Parallelism (mm)	The parallelism tolerance of the GCD surface. Note If set to <unspecified>, aPriori assumes that the chosen manufacturing process and operations have sufficient tolerance capability to manufacture the GCD.
	Perpendicularity (mm)	The perpendicularity tolerance of the GCD surface. Note If set to <unspecified>, aPriori assumes that the chosen manufacturing process and operations have sufficient tolerance capability to manufacture the GCD.
	On Bounding Box	Indicates whether the part’s face coincides with the bounding box. If true, the face coincides with the bounding box. This property allows the system to decide whether the required finish can be achieved simultaneously by the bulk milling operation.
	Direction Type	Indicates the direction type. 1 = normal to surface, 2 = parallel to surface, and 3 = oblique to surface.
Technique	Requested	The technique selected by you. If you have not selected a technique, this field is set to auto-select.
	Selected	The technique used by aPriori. If the requested technique cannot be used, aPriori will select a technique that can be used.
Results	Time(s)	The time (in seconds) that it takes to machine the GCD or complete work on a technique. If there is more than one occurrence of the GCD or technique, this field shows the sum of the occurrences.
	Surface Finishing Rate (mm3/sec)	The total volume finished per second.
	Status	The costing status of the GCD or technique. A green icon indicates that costing was successful, a yellow icon indicates that costing succeeded with a warning, and a red icon indicates that costing failed.