Stock Trims
The Stock Trims GCD Type includes a single GCD named StockTrim, which represents the volume of material removed by roughing with an endmill. The material removed is the material cross-section between the smallest possible box that fits around the finished part (the bounding box) and the material stock that encloses the part times, the bounding box, and the cutoff. The material represented by the Stock Trim GCD typically is first roughed away, and then additional machining is performed to create the features on the finished part.
Stock trim is a virtual GCD. It is computed after aPriori selects the appropriate stock size from the bounding box. This GCD is available for the Machining process group.
For parts machined from rectangular stock, aPriori now displays the Stock Trim GCD in the Component Viewer pane. The stock trim is rendered with red outlines representing the stock surfaces and yellow outlines representing the bounding box.
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
Volume (mm3)
The volume of the GCD.
 
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.
 
Min Radius (mm)
The minimum radius found on the GCD.
Note The minimum radius is determined in a plane perpendicular to the setup axis from which the GCD is being machined.
 
Max Radius (mm)
 
The maximum radius found on the GCD.
Note The maximum radius is determined in a plane perpendicular to the setup axis from which the GCD is being machined.
 
Size (mm)
A metric used to drive calculations involving the overall GCD size.
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.
 
Volume Removal Rate (mm3/sec)
The total volume removed 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.