six sigma overview on the process capability improvement
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8/13/2019 Six Sigma Overview on the Process Capability Improvement
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Six Sigma & Process CapabilityAdev Research
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Adev Research
At Adev Research, we place an emphasis on our research
methods, analytical abilities and combining the latest data
collection methods with current academic research.
We are dedicated to providing consulting services at the
highest level based on our own and industry-level research
methodologies. We provide services within a range of sectors
including high-tech, consumer facing products, travel, media,pharmaceutical and business services.
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Areas of Activity
Six Sigma & Statistical Consulting
Customer Satisfaction & Market Performance
Market Research Insights
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Business Areas for Six Sigma
Distribution and allocation management
Order management
Product development
Software development
Consumer facing operations
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BusinessObjectives
ROIVoice of
theCustomer
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Six sigma defined
A business strategy to reducevariability and improveprocess quality.
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Six Sigma Goals
1. Develop a customer centric focus with a clear
link to business strategy
2. Focus on key business issues that are
essential to customer opportunities
3. Reduce waste and increase process speed
and efficiencies
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lets talk about the
Six Sigma Process
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Six Sigma Process
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Design Goals based on a customer centric focus.
Measure Measure the current procedure and gather
relevant data. Analyze Verify relationship of factors and ensure that all
factors have been reviewed. Improve Optimize and improve the current process.
Control Control the new process.
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Design
Define an opportunity from the business and customerperspectives.
Translate Voice of the Customer into measurablemetrics
Understand the variables that affect the key metrics
Map the process to be improved with defined goals
Apply data mining techniques to establishimprovement opportunities
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Measure
Understand the process and its current performance.
Operational definitions & Process mapping
Determine the current state of performance for a
baseline
Establish the metrics required to monitor the process
Control charts, failure mode and effects analysis(FMEA)
Proposed process layout
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Analyze
Search for key factors that have the largest impact onprocess performance.
Sample size & frequency for sampling
Establish potential root causes that create processvariation
Identify the few critical inputs affecting the outputs,
Pareto analysis Hypothesis testing
Regression & ANOVA analyses
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Improve
Develop improvement solutions for the established key
factors.
Take a benchmark to measure process improvements
Potential solutions & prioritization for improvement
factors
Develop cost/benefit analysis based on the proposedimprovement plan and simulation
Implementation plan
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Control
Implement the solution and control the process.
Monitoring plan to control process adjustments
Control charts for defect prevention
Key metrics must be kept within the established
targets
Communicate business results
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a little more within industrial statistics
Process Capability
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Process Capability
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Process capability analyzes the uniformity of the
process.
Measure the parameters of the product rather thanthe process itself
Expressed as a process capability index
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Process Capability Analysis Goals
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1. Predict how the process will hold within the
tolerance limits
2. Establish sampling intervals
3. Establish performance requirements for
equipment or suppliers
4. Reduce process variability
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Process Capability Analysis
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191715131197531
602
600
598
Sample
S a m p l e M e a n
_ _ X=600.23
UC L=602.474
LCL=597.986
191715131197531
8
6
4
2
0
Sample
S a m p l e R a n g e
_ R=3.890
UC L=8.225
LCL=0
1
6
1
Xbar-R Chart of Supplier
601.50600.75600.00599.25598.50597.75
LSL Target USL
LSL 598
Target 600
USL 602
Sample Mean 599.548
S ample N 100
StDev(Within) 0.576429
StDev(Ov erall) 0.619299
Process Data
C p 1.16
C PL 0 .90
CPU 1.42
C pk 0 .90
P p 1.08
PPL 0 .83PPU 1.32
Ppk 0 .83
Cpm 0.87
Ov erall Capability
Pote ntial (Within) C apability
PPM < LSL 10000.00
P PM > U SL 0.00
PPM Total 10000.00
O bserved Performance
PPM < LSL 3621.06
PPM > U SL 10. 51
PPM Total 3631.57
Exp. Within Performance
PPM < LSL 6216.68
PPM > U SL 37. 58
PPM Total 6254.26
Exp. Ov erall Performance
Within
Overall
Process Capability of Supplier
Process Capability Ratio Process
Cp > 1 Uses less than 100% of the tolerance band.
Cp = 1 Uses the entire tolerance band.
Cp < 1 Large number of nonconforming parts will be produced.
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Adev Research
Eric Blumenfeld
www.adevresearch.com
ericb@adevresearch.com
Finding clarity from complex objectives
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