Gravity Die Casting Operation-level Feasibility
Below are the PM operations that have associated feasibility rules, grouped by GCD type. Each operation is accompanied by necessary conditions for the operation’s feasibility. aPriori checks the operations in the order specified by the operation templates.
See
Trim Machine Selection for information on Trim operation feasibility, which affects tooling cost as well as required clamp force.
Curved Surface
• As Cast
o Surface area is nonzero.
o Tolerance is not too small to cast, if secondary machining is disabled.
o GCD does not lie on an axigroove.
Curved Wall
• As cast
o Surface area is nonzero.
o Tolerance is not too small to cast, if secondary machining is disabled.
o GCD does not lie on an axigroove.
Void and ComboVoid
• All Operations
o Box width is not too small to cast (that is, diameter is greater than or equal to the plant variable minDieCastableHoleDia).
o Box height is not too small to cast (that is, diameter is greater than or equal to the plant variable minDieCastableHoleDia).
• Side Pull
o GCD is obscured or undercut.
o GCD is not accessible from the draw direction.
• No Side Pull
o GCD is accessible from the draw direction (accessibility is Side A, Side B, or Through).
Multistep Hole
• All operations
o Diameter is not too small to cast (that is, diameter is greater or equal to than the plant variable minPermanentMoldHoleDia).
o Tolerance is not too tight to cast, if secondary machining is disabled.
o Hole is not threaded, if secondary machining is disabled.
• No Side Pull
o Hole is accessible (accessibility is Side A, Side B, or Through)
• Side Pull
o Hole is obscured.
o Hole has unobstructed parallel access for a slide.
Planar Face
• As Cast
o Surface area is nonzero.
o Tolerance is not too small to cast, if secondary machining is disabled.
Simple Hole
• All operations
o Diameter is not too small to cast (that is, diameter is greater or equal to than the plant variable minPermanentMoldHoleDia).
o Tolerance is not too tight to cast, if secondary machining is disabled.
o Hole is not threaded, if secondary machining is disabled.
• No Side Pull
o Hole is accessible (accessibility is Side A, Side B, or Through)
• Side Pull
o Hole is obscured.
o Hole has unobstructed parallel access for a slide.