基于PC的CAD/CAM/DNC系统广泛应用于大学的机床技术设施中。该系统支持CAD开发、CNC程序生成以及PC兼容计算机和多个CNC控制器之间的双向文件传输。该系统已发展成为一个简单但强大的DNC环境，支持手动和计算机辅助CNC程序开发的所有阶段。本案例研究描述了系统演变、硬件和软件需求、DNC对CNC操作和整体生产的好处，还包括从经验中吸取的教训。

A PC-BASED CAD/CAM/DNC SYSTEM IS USED EXTENSIVELY IN A UNIVERSITY'S MACHINE TOOL TECHNOLOGY FACILITY. THE SYSTEM SUPPORTS CAD DEVELOPMENT, CNC PROGRAM GENERATION, AND TWO-WAY FILE TRANSFER AMONG PC-COMPATIBLE COMPUTERS AND MULTIPLE CNC CONTROLLERS. THE SYSTEM HAS EVOLVED INTO A SIMPLE BUT ROBUST DNC ENVIRONMENT SUPPORTING ALL PHASES OF MANUAL AND COMPUTER-ASSISTED CNC PROGRAM DEVELOPMENT. THIS CASE STUDY DESCRIBES SYSTEM EVOLUTION, HARDWARE AND SOFTWARE REQUIREMENTS, THE BENEFITS OF DNC ON CNC OPERATIONS AND OVERALL PRODUCTION, AND ALSO INCLUDES LESSONS LEARNED FROM THE EXPERIENCE.