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Modularity in Product Design
Transcript of Modularity in Product Design
These parts can then assemble into the full product assembly, in any configuration. 1. Create a skeleton model according to the established architecture. This will be the full product assembly. 2. Use critical geometrical constraints to create parameters and expressions. This will result in a skeleton model that reflects the critical orientation and position relationships between all modules. 3. Assemble all subassemblies into the skeleton model (ie the top-level assembly). Try a formal method of defining modules Design for assembly (DFA) Keeps modules easily swappable and minimizes interactions between modules so that different robot configurations can be achieved. TRY: Minimize the use of fasteners, especially those which are threaded. Use self-fastening features where possible. This allows for a clear, easy method of attaching/detaching modules. TRY: Use a component with a large mass and low CoG as the base from which other assemblies attach. It should clearly indicate where each module goes. TRY: Limit maximum dimensions of each module so that they don't interfere with each other, no matter what configuration. TRY: Use features such as CNC'ed guides to make modules self-aligning and self-locating/ TRY: Use features that make modules impossible to install incorrectly. Gu, Hashemian, and Sosale from University of Saskatchewan propose a method in their paper "An Integrated Modular Design Methodology for Life-Cycle Engineering": Grab catches Establishing architecture Standardizing all possible module connections to the base Having a base from which modules attach Replace the 2011 kickers' restraints with quick-release clamps DFA: Reduce number of components in the path to any module Keyhole slots allow different modules be easily swapped in A systems concept in which a product is the result of a combined configuration of subassemblies, or modules. Sandy's Modularity Ranking Tool
= SMRT = (t_a + t_d) * (1 + n/m) + q 1 2 3 5 4