These articles are from the Six Sigma SPC Newsletter
and other publications. All articles written by Jim Winings
Waste-Free Industrialized Systems
DFSS - Design for Six Sigma
Six Sigma SPC - 2070 W. Washington St. #5
Springfield IL 62702 Ph: 217.698.0063
6 Sigma Statistical Process Control (SPC) Software for Windows
How Can Product/Process
Designs Be A
Factor To A Waste-Free Industrialized System?
100% functional purchased
and materials is the objective
Principles of Design for Assembly/Formation
the number of parts.
for z-axis assembly.
away from separate fasteners whenever possible.
parts with basic "self-locking" features.
toward modular design.
mixtures of procedure/ process technologies.
piece part packaging is well-matched with the process's
material handling and automation schemes.
B. Design for simplest
flow (minimum parts, kits, subassemblies, test, paper work,
Why should testing be
minimized? Testing is used to detect the presence of failures,
(sometimes cause by external
failures), induced by the industrialized process.
Testing is …
C. Design for minimum
uniqueness/distinctiveness (common parts, processes, workflow,
How much does it cost in
time and dollars to add a part?
the print number
- Changing the Bill
- Print reviews
by Development, Process, and Quality Engineering as well
as the Purchasing department
- Releasing of the
- Making and
distributing the new print
- Purchasing Quote
cycle. Finding suppliers, etc.
- Possible tooling
- Possible test
- Qualification costs
On Going Cost
- Inspection costs
- Stock costs
- Getting part to the
- Storage for part on
the assembly line
- Added tracking and
ordering for the production
- Added purchasing
- Carrying cost
You MUST work with you
suppliers and become their partners in order to achieve 100%
useable, (no waste in time or parts), incoming purchased
materials. Designing the assembly for simplicity and minimum
uniqueness helps in the removal of defects. This includes NOT
having duplicate parts with different part numbers. This is a
really large waste of resources based on the above information.
Last Updated: Saturday, 15-Apr-06 19:47:36 PDT