1. Introduction Flashcards
UCL?
upper control limit
LCL
lower control limit
VOP?
voice of the process
VOC?
voice of the customer
Problems regarding VOP and VPC?
It is ont the same.
If they are to far away, customers will not be happy
- narrow down USL & LSL does not change the UCL and LCL and will lead to waste and rework
most common situation?
Ppecial cause of variation
- not stable
- not predictable
- will still need to test everythinh
Goal?
- Stabilize
- make predictable
- find relationship between control factors and
- stable process—> test testing
- find the most important factors
Problem
(- the trick is to go upstream)
USL?
upper specification limit
LSL?
lower specification limit
longer ?
- less steep slope
- better quality
- slower
DMAIC?
- Defining
- Measurement
—> what is the baseline today?
—> current situation
—> can we trust the data? - Analyze
- Implement
- Control
Implementing Lean and Six Sigma?
- Lean
- Six sigma
Problem:
- Bad lean metrics often caused by to much variation
while six sigma focus variation.
Organizational process states?
manufacturing
- often from stabilization to optimization
info flow
- often from chaos to stabilization
where can we often find the problem?
not in the system but maybe in the input, from the suppliers
where can we often find the problem?
not in the system but maybe in the input, from the suppliers
Continual improvement
- What do you want to accomplish (big Y)
—> customers requirement on the output - By what method
—> limitation
—> what does your jurisdiction allows you to implement
—> use AIM - How will you know? (small y)
—> where we define our problem
—> effecting scoping tool
PROBLEM WITH EFFECTIVE SCOPING
- Engineers are trained to save problems
- Engeneers do it with the tools they have
- Think everyone sees the situation the same way as them
- selecting specialist for problem solving before the problem is defined
principal route for improvements is?
- Find how y depends on:
—> inputs x
—> control parameters C
—> noise N - Use control parameters order to
—> mitigate variation in y from x,c,n
—> improve Y
The steps in effective scoping?
- FOCUS THE OUTPUT
- identify what the process does - What comes out from this activity
- In what context will it be used
- What is required of it?
- FOCUS ON WHAT TO IMPROVE
- Identify the objective with the project before manning - what measure should be improved? -y
- Can that precise y be measured and what is the baseline?
- What Y cannot be lost in the process?
- constraints - FOCUS THE MANNING
- Where can changes be made - where can the changes be made?
- What inputs are supplied and from whom?
- What does the system require input?
