This is probably the most important concept. Think of an automobile assembly line -- the chassis is the stable base. As it moves along the line, parts and subassemblies are fastened to it in turn. There is no need for reorientation of the entire chassis for each new subassembly. Minimize reorientation of entire assembly The less an assembler has to move and orient both the original part and parts to be added, the faster and more trouble-free the process will be: Reduces number of necessary tools and fixtures Reduces final assembly and testing times Reduces operator fatigue and improves workplace ergonomics Improves quality
Make the insertion point easy to see and reach Utilizing this concept: Decrease the need for specialized fixtures Fixtures are devices that hold the part or assembly in a particular orientation so the part can be fastened or inserted securely. A stable base minimizes the need for such fixtures, because it acts as a fixture itself. | 