Design for manufacturing ppt anas lahrichi

1. Design for
Manufacturing
STUDENT : ANAS LAHRICHI
8TH DECEMBER 2019
PROFESSOR : DR.SIMIN NASSERI
COURSE : ADVANCED MANUFACTURING

2. Outline
1. Introduction
2. Definition : What is Design for Manufacturing (DfM) ?
3. Factors to consider in DfM
4. Principles of DfM
5. Analysis of DfM Principles
6. Benefits of DfM
7. Examples of the Use of DfM
8. Conclusion
9. References

3. Introduction
 In this presentation,we will be summarizing key points
about design for manufacturing from different sources.
 It is a job performed by design engineers and the quality of
this step naturally impacts heavily all consequent work of
the engineering process and that is why it should be done
scientifically.

4. Definition : What is Design for
Manufacturing (DfM) ?
 According to Rasmussen : « Design for Manufacturing (DFM) is the
process of designing parts, components or products for ease of
manufacturing with an end goal of making a better product at a lower
cost. This is done by simplifying, optimizing and refining the product
design. »
 It is very important to plan and design the manufacturing process in order
to streamline and subsequently maximize productivity.
 As mentionned in the lecture of Scott : design for manufacturing involves
multiple kinds of decisions that could go all the way up to the location of
the factory, workforce number and training etc.

5. Factors to consider in DfM
 According to Phillips innovation services (and as shown in Figure 1), the
three main factors that we optimize and balance in DfM are : Cost, quality
and lead time. In other words, we want to minimize the cost while
maximizing the quality (TQC principle) and respecting JIT based lead times.
Figure 1 :
Factors
considered
in DfM

6. Principles of DfM
 The five principles of DfM are :
1. Process
2. Design
3. Material
4. Environment
5. Compliance/Testing

7. Analysis of DfM Principles
 1.Process
It is important to choose a properly scaled manufacturing technique that
doesn’t under or over do the required task.
 2.Design
It is crucial to be familiar with technical requirements of manufacturing
technique picked in step 1 in order to provide a practical engineering
drawing.
 3.Material
Choose wisely the material used by taking into consideration its
physical/chemical properties
(mechanical,optical,thermal,electrical,flammability etc.)

8. Analysis of DfM Principles (Continued)
 4.Environment
Consider the conditions in which the part would usually be subjected to if not
harsher in order to come up with reliable tolerance limits that avoid
breakdown.
 5.Compliance/Testing
The downstream customer needs to be satisfied with product and it is
essential to test systematically for flaws/defects. Customer trust is built on the
rigorous application of this step.

9. Benefits of DfM
• The implementation of DfM
studies is motivated by multuiple
advantages summarized in Figure
2 on the right :
• A lean WCM venture strives for
these benefits as part of TQC
(Improved quality), JIT (limited
delays and reduced cost).
Figure 2 : Benefits of
DfM

10. Examples of the Use of DfM
 DfM is used widely across many engineering fields especially during the
design phase, following are some specific examples from Wikipedia :
 Design of printed circuit boards : specifically the automation of
component soldering.
 Design of integrated circuits : DfM is used to boost yield and reliability.
 CNC Machining : DfM makes use of these automated machines to
minimize time and maximize accuracy/quality of parts.

11. Conclusion
 In conclusion, Design for Manufactruring is a crucial study of a part’s
design from different aspects such as process used, part drawing, material
choice, environmental conditions of operation and testing considerations.
The succesful use of DfM leads to tangible benefits for the factory
including less costs,lead time and better quality.

12. References
 Article : « How Robotics Transform Manufacturing »
https://www.baianat.com/articles/how-robotics-transform-manufacturing
 Design for manufacturing course on Youtube by Scott N.Miller
https://www.youtube.com/watch?v=EwwqUoS5PAE
 Rasmussen : https://news.ewmfg.com/blog/manufacturing/dfm-design-for-
manufacturing
 Phillips : https://www.innovationservices.philips.com/looking-
expertise/manufacturing-systems-industry-40/design-for-manufacturing-
assembly-and-testing/
 https://www.quora.com/In-engineering-what-does-the-word-design-mean-and-
give-an-example-of-a-design-in-civil-engineering
 https://www.mh-mfg.com/resource/dfm-acronym-meaning
 Wikipedia : https://en.wikipedia.org/wiki/Design_for_manufacturability