define phase
Within Define phase are articulated problem descriptions,
objectives and metrics as well as solution strategy.The main goal was to identify and decrease expenses in the
deburring department for aluminium castings through times and
scrap reduction for at least 30% [8]. There were several major
causes for the high expenses variability in castings quality, to
many handcrafts, and to long control time.
The main objectives of undertaken projects were to identify
areas in the process where extra expenses exist, identify the
biggest impact on production expenses, introduce appropriate
measurement system, improve process and reduce expenses on
production times, and implement improvements.
An adequate metrics for evaluating projects success should be
established. These metrics includes ratio volume/cost, labour cost,
tool cost, scrap cost, number of nonconforming or defect parts per
million (ppm), and Rolled Throughput Yield (RTY), the
probability that a part will pass through multiple process steps
without a defect.
When the project was started, few useful historical data were
available, so the first step was to collect and select these data in
the deburring processes. On the base of the collected data decision
about selection of process for improvement should be made, all
process phases should be screened and appropriate action plan for
minimizing variability within the process as well as reduction of
production times prepared.
In accordance to Six Sigma philosophy, Define, Measure,
Analyse, Improve and Control strategy approach was employed.
In accordance with DMAIC methodology, project goals should be
defined, cross-functional teams formed including individuals with
adequate process knowledge, historical information collected, and
appropriate process selected for improvements. Furthermore,
process map and cause and effect diagram should be define,
process FMEA conducted and, based on obtained results, required
actions and tools for process analysis selected. Appropriate action
plans and design of experiment methods should be employed, and
diverse control charts used for success monitoring.
define phaseWithin Define phase are articulated problem descriptions,objectives and metrics as well as solution strategy.The main goal was to identify and decrease expenses in thedeburring department for aluminium castings through times andscrap reduction for at least 30% [8]. There were several majorcauses for the high expenses variability in castings quality, tomany handcrafts, and to long control time.The main objectives of undertaken projects were to identifyareas in the process where extra expenses exist, identify thebiggest impact on production expenses, introduce appropriatemeasurement system, improve process and reduce expenses onproduction times, and implement improvements.An adequate metrics for evaluating projects success should beestablished. These metrics includes ratio volume/cost, labour cost,tool cost, scrap cost, number of nonconforming or defect parts permillion (ppm), and Rolled Throughput Yield (RTY), theprobability that a part will pass through multiple process stepswithout a defect.When the project was started, few useful historical data wereavailable, so the first step was to collect and select these data inthe deburring processes. On the base of the collected data decisionabout selection of process for improvement should be made, allprocess phases should be screened and appropriate action plan forminimizing variability within the process as well as reduction ofproduction times prepared.In accordance to Six Sigma philosophy, Define, Measure,Analyse, Improve and Control strategy approach was employed.In accordance with DMAIC methodology, project goals should bedefined, cross-functional teams formed including individuals withadequate process knowledge, historical information collected, andappropriate process selected for improvements. Furthermore,process map and cause and effect diagram should be define,process FMEA conducted and, based on obtained results, requiredactions and tools for process analysis selected. Appropriate actionplans and design of experiment methods should be employed, anddiverse control charts used for success monitoring.
การแปล กรุณารอสักครู่..
