Customer Satisfaction, Cost, Quality,
Process Speed, Invested Capital
Lean Six Sigma
Lean manufacturing tools
increase process speed and reduce
process waste. Six Sigma quality
tools to reduce process variation
and eliminate product defects
Six Sigma: The Power of a
Quality Culture
Goal
Create a quality management system to measure
process capability and to improve it to
near-perfection
Process variation vs. Quality specifications,
it must be larger than 1.33
Real Process Capability
Index (Cpk)
Process distribution vs. Quality specifications,
it must be larger than 1.00
Process and Improvement Tools
Step 1: DEFINE
Step 2: MEASURE
Step 3: ANALYZE
Step 4: IMPROVE
Step 5: CONTROL
Develop control plan, monitor
performance, and mistake-proof
process
TOOLS
Control plan, statistical process
control, Poka-Yoke devices, and
process documentation
Generate ideas for product and process
design, conduct experiments, create straw
models (prototypes), develop implementation
plans, and validate improvements
TOOLS
Design of experiments,
total productive
maintenance, SMED, flow
manufacturing, and
jidoka / autonomation
Determine process capability
and speed, and determine
dources of variation and cycle
time bottlenecks
TOOLS
Statistical process control, process mapping /
arrow diagram, standard operations analysis, and
DFMEA /PFMEA
Define current state, confirm
project objectives, and collect
and display data
TOOLS
Lean Six Sigma diagnostic,
process mapping, statistical
process control (7H / 7M), and
MSA
Identify black belt and team
resources, prepare team
charter, and obtain project
approval
TOOLS
Project management, VA /
VE, and financial analysis
The Speed of Lean Manufacturing
Goal
Identify the “time traps” injected by fewer than 20% of the
workstations that cause 80% of the delays and eliminate
them
Metrics
Process Cycle Efficiency > 25%
Value-Added Time, and Total Lead Time
Sources of Waste Reduction
Shorter lead time, less inventories, less material
handling, fewer customer complaints, and less scrap
and rework