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Reviewed by V. P. Carey 2 Advances in Thermal Modeling of Electronic Components and System-Vol. 2 is the second in a biannual series which documents recent developments in analysis of the thermal control of electronics. The six chapters of this book are each written by different authors. Each of the first five chapters provides a state-of-the-art review of a different specialized area. Chapter 1 describes recent developments related to air cooling and interconnection heat transmission in minicomputers

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The purpose of this research is to develop a methodology and a prototype system that allows the integration of product design and manufacturing planning. The task is achieved through an integrated CAD-CAPP-CAFP# environment. The system consists of three major modules, namely, Feature Analyzer, Process Planner and Fixture Planner. The manufacturing information of a part required for process and fixture planning is extracted from the 3-D geometric model and the 2-D engineering drawing, thereby both geometric and non-geometric attributes of a part can be obtained. An integrated approach to process and fixture planning is adopted to ensure that the process plan for a part is generated on the basis of a workable fixture plan. The approaches to feature analysis and to integrating process and fixture planning are introduced.

The concept of mapping a three dimensional (3D) contouring cutter path with major motion in a plane parallel to the Z axis onto the X-Y plane or one perpendicular to the Z axis is introduced. A systematic method is developed that can be used to program, in APT or other high-level languages, complex contouring cutter motion based on the concept introduced. As a result, NC programming of contouring motion for many complex engineering parts on a 3-axis numerically controlled (NC) milling machine, which is often considered difficult, can be greatly simplified. Part examples are discussed; and the APT programs defining the cutter path based on the 3D-to-2D mapping concept, are also analyzed in detail. The concept and method introduced proved to be a powerful tool for programming the NC machining process for many parts, particularly dies and molds.