By Geoffrey Boothroyd
ISBN-10: 1420089285
ISBN-13: 9781420089288
Advent what's layout for Manufacture and meeting? heritage Implementation of layout for meeting layout for Manufacture Producibility instructions How Does DFMA paintings? Falsely Claimed purposes for no longer enforcing DFMA What are some great benefits of using DFMA in the course of Product Design?Overall effect of DFMA on U.S. collection of fabrics and techniques normal necessities for Early fabrics and Process Read more...
summary: creation what's layout for Manufacture and meeting? background Implementation of layout for meeting layout for Manufacture Producibility directions How Does DFMA paintings? Falsely Claimed purposes for now not enforcing DFMA What are some great benefits of utilizing DFMA in the course of Product Design?Overall impression of DFMA on U.S. collection of fabrics and strategies normal standards for Early fabrics and procedure choice number of production methods procedure functions number of fabrics basic Process/Material choice Systematic choice of techniques and fabrics ProblemsPro
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Extra resources for Product Design for Manufacture and Assembly, Third Edition
Example text
Bushings (2): These do not satisfy the criteria because, theoretically, the base and bushings could be of the same material. Motor: The motor is a standard subassembly of parts that, in this case, is purchased from a supplier. Thus, the criteria cannot be applied and the motor is a necessary separate item. Motor screws (2): Invariably, separate fasteners do not meet the criteria, because an integral fastening arrangement is always theoretically possible. Sensor: This is another standard subassembly and will be considered as a necessary separate item.
Thus, DFA and DFM were born, later to become DFMA. The original objectives of the entire research program were to develop analytical methods to guide designers in their work. The general idea was to design products for the ease of assembly and to design their component parts for the ease of manufacture (often referred to as producibility). However, these objectives were soon found to be conflicting. Producibility rules have led to suggestions that component parts be divided into simple shapes. However, as will be illustrated, this is rarely a good idea.
Finally, a box-shaped cover slides over the whole assembly from below the base and is held in place by four screws, two passing into the base and two into the end cover. There are two subassemblies, the motor and the sensor, which are required items, and, in this initial design, there are eight additional main parts and nine screws making a total of nineteen items to be assembled. When DFA began to be taken seriously in the early 1980s and the consequent benefits were appreciated, it became apparent that the greatest improvements arose from simplification of the product by reducing the number of separate parts.
Product Design for Manufacture and Assembly, Third Edition by Geoffrey Boothroyd
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