Issues Resolved in aPriori Professional
• The Rivet Operation again is available to be applied to assembly subcomponents. aPriori 2019 R2 corrects a situation that affected only aPriori 2019 R1 SP1, in which the Rivet Operation of the Mechanical Assembly process was not available in that service pack release only, preventing users indicating that an assembly sub-component was assembled by riveting.
• aPriori 2019 R2 now displays process feasibility failure indications within the simplified Routing Selection dialog which is invoked from the Cost Guide (via the 
button under the Process Routing heading). This is a lightweight version of the complete routing editor which is invoked from the Edit menu in the Manufacturing Process pane. Previously, if a process in the routing failed a feasibility rule, the failure indicator was displayed in the complete routing editor but not in the simplified Routing Selection dialog. Now both dialogs display the failure indicator.
button under the Process Routing heading). This is a lightweight version of the complete routing editor which is invoked from the Edit menu in the Manufacturing Process pane. Previously, if a process in the routing failed a feasibility rule, the failure indicator was displayed in the complete routing editor but not in the simplified Routing Selection dialog. Now both dialogs display the failure indicator. • aPriori 2019 R2 corrects a cycle time calculation error that sometimes occurred for turning processes (3-Axis Lathe, Mill Turn, and 3-Axis Bar Feed Lathe). Previously, cycle time calculations for operations performed with live tooling sometimes erroneously used the machine’s main spindle power and speed rather than the live tooling power and speed.
• aPriori 2019 R2 resolves an issue in the Stock Machining process group which affected “plate stock” materials. Previously when adding a new plate stock material to a VPE, the drop-down menu which is used to specify the cost per mass units (e.g. Cost per KG or Cost per LB) was not available and the cost was assumed to be in units of Cost per KG. Now the drop-down menu is available and can be used to specify the desired unit system for the material cost.
• In the Bar & Tube Fabrication process group, aPriori now allows Punching operations to be assigned to holes which lie on non-planar surfaces, such as a hole punched through the walls of a round tube. Punching such holes previously failed operation feasibility rules, but now will be allowed as long as the walls of the holes are parallel to one another.
• In the Casting – Sand process group, machine selection logic for the Shakeout process was updated to account for the presence of multiple cavities and the gating system mass. Note that for the purposes of machine selection only the default values for all gating system elements will be used, not the value provided by a PSO override
• For high-pressure die cast parts, the Special Mold Tooling section of the Design To Cost tab now correctly displays all GCDs which require cores. Previously GCDs which required Insert Coring or Side Coring were neglected
• aPriori 2019 R2 resolves an issue for die casting parts, in which the Design to Cost tab sometimes indicated that a part had a tolerance value specified which was driving Machining operations to be applied, when in fact no machining was assigned or required. The Driving Machining field now correctly will display a value of 0, indicating that there are no specified tolerances which require machining operations to achieve.
• In the Sheet Metal process group, the Materials dialog which is invoked from the Design to Cost tab now includes a Material Type filter for “All Materials” so that the relative cost for all available materials can be compared. This filter previously was available in other process groups but was missing in the Sheet Metal process group.
• In the Forging process group an issue related to machine selection for the Hammer process has been resolved. The required impact energy calculation now correctly uses weight as an input instead of mass. This correction will result in an increase in the calculated value of the required impact energy; as a result, a larger machine with a higher overhead rate will be selected than in the previous release of aPriori. The overall impact on cost typically will be small, on the order of a few percent.
• In the Plastic Molding, Casting – Sand and Casting – Die process groups an issue related to the display of Proximity Issues in the Design to Cost view has been resolved. Previously SimpleHole GCDs that are children of a ComboVoid GCD were not evaluated for Proximity Issues. Now these GCDs also will be included in the Proximity Issues list if they violate minimum spacing thresholds. This change will have no impact on cost but will result in more DTC issues displayed for some parts.
• aPriori 2019 R2 corrects an issue in which the Plastic Molding process setup options Cavity Plate Height and Core Plate Height did not affect the calculated Mold Height required for a part. Now these process setup options have an impact; in some cases, a different machine now may be selected when these options are used, due to the change in overall mold base thickness
• In the Formula Dependencies dialog for all process groups, the field Number of Scrapped Parts Down Stream was updated to display the correct value, which is computed based on the Good Part Yield specified for processes occurring later in the routing. Previously the value always displayed 0, although the correct value was computed internally and used in calculations as appropriate. Since this is a display-only issue, this update will not have any impact on part cost.