Abstract
Casting sprue is required to parameterize for suiting material processing and developing casting quality so as to find the best casting sprue for the corresponding material. In this work, parameterization for casting sprue for different materials is conducted using Visual LISP. The main procedures are like this in sequence: establishing dialog for the casting sprue parameters of variable materials, drawing programming, entering the shape parameters of one material into the dialog, directly outputting its model through CAD. Combining techniques of material casting, CAD and Visual LISP together offers following merits: (i) simplify repetitive sprue design among different materials and develop drawing efficiency by making certain CAD function automatic. (ii) develop sprue design efficiency among different materials by leaving many similar structures of different materials to a computer program.
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