Problems in Integrating a Feature-Based Process Planner with an NC-ProgrammingSystem

摘要

The starting point of the article is a feature-based system originallyimplemented for the manufacturing cost analysis of rotational parts. Extending such a system to produce NC-code using an external NC-programming system requires the following tasks. First, operations that realize the processes must be generated. Second, operations have to be sequenced and grouped into setups. Third, detailed geometric information related to each operation has to be generated for cutter path generation. Product classification based setup planning strategies are proposed as a solution to these tasks. NC-programming for feature types that during manufacturing take the negative image of the cutting tool is rather straightforward. NC-programming in the case of a feature the shape of which is generated by a sequence of tool sweep motions is more complicated.