Product Design for Manufacturing and Assembly (DFM&A)

2006 ◽  
pp. 1-21
Author(s):  
Gordon Lewis
Author(s):  
Albert E. Patterson ◽  
Yong Hoon Lee ◽  
James T. Allison

Abstract Design-for-manufacturing (DFM) concepts have traditionally focused on design simplification; this is highly effective for relatively simple, mass-produced products, but tends to be too restrictive for more complex designs. Effort in recent decades has focused on creating methods for generating and imposing specific, process-derived technical manufacturability constraints for some common problems. This paper presents an overview of the problem and its design implications, a discussion of the nature of the manufacturability constraints, and a survey of the existing approaches and methods for generating/enforcing the minimally restrictive manufacturability constraints within several design domains. Four major design perspectives were included in the study, including the system design (top-down), the product design (bottom-up), the manufacturing process-dominant approach (specific process required), and the part-redesign approach. Manufacturability constraints within four design levels were explored as well, ranging from macro-scale to sub-micro-scale design. Very little previous work was found in many areas but it is clear from the existing literature that the problem and a general solution to it are very important to explore further in future DFM and design automation work.


Author(s):  
Bradley C. Parker

Declining budgets and shortened schedules leave engineers little room for error in choosing a successful and profitable design concept. A redesign at any point in the program will destroy the product schedule, budget, and design cost goals. One tool for choosing a cost effective, fully compliant design is the Design for Manufacturing and Assembly (DFMA) Workshop. Although DFMA Workshops are most frequently applied to existing products, the process is most effective when applied during the initial design phase eliminating the need for costly redesigns. The DFMA Workshop involves a team that includes all the stakeholders in the success of the design, including customers and suppliers. During the Workshop, the team applies the 11 DFMA Principles and brainstorms ideas to meet the product requirements. The team then evaluates the ideas for technical risk and feasibility and then choosing the most promising ideas to be implemented into the design.


2017 ◽  
Vol 16 (1) ◽  
Author(s):  
Ilham Priadythama ◽  
Susy Susmartini ◽  
Alviandi Wahyu Nugroho

<span class="fontstyle0">Design for Manufacturing and Assembly (DFMA) is a method to evaluate the design of product<br />with considering the ease of manufacture process and the assembly process. UNS LPPD Hand is<br />prosthetic hand with the function and shape that has likely the original hand man. UNS LPPD Hand is developed by the Laboratory Planning and Product Design of Sebelas Maret University (Laboratorium P3 UNS). From the conceptual design of prosthetic finger by Cahyadin (2016), the prototype can't do the movement flexed according with the design objectives and there are some components that not required. Therefore, there are some components that must be modified or eliminated. The modified component is phalanx of media and eliminated components are short and long pin holder The result is improvement of design prosthetic finger that 2 components are fixed and 4 components are eliminated, and reducing the process from 99 steps to 79 steps</span>


Author(s):  
J. W. van Vliet ◽  
C. A. van Luttervelt ◽  
H. J. J. Kals

Abstract Often the designer has insufficient information and knowledge to effectively consider manufacturability aspects of the product design. To improve the efficiency of the product realisation process, i.e. to save time and costs, Design for Manufacturing-support must be offered in an effective way. Elements of DFM that must be considered for DFM support are identified in this literature study. The key towards effective computer based DFM support is integration of these elements, for which an architecture is proposed in this paper.


2006 ◽  
Vol 532-533 ◽  
pp. 805-808
Author(s):  
Hong Jun Liu ◽  
Rong Mo ◽  
Qing Ming Fan ◽  
Zhi Yong Chang ◽  
Xiao Peng Li

Part manufacturability under Concurrent Engineering (CE) environment was analyzed in detail. An evaluation system of Design For Manufacturing (DFM) was proposed according to CE ideas. The evaluation methods for part manufacturability feature-based are intended to present in this paper. Product design can be guided according to feedback information by evaluating the part manufacturability. Finally an example of rabbet-feature manufacturability of a turbine blade was given to show the method available and practicable.


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