7 Steps To Set Up Statistical Process Control (SPC) On Production Processes | CMC

4. Gather data and process knowledge of what impacts the output of the process

For example, the variables that might affect the output of a gluing process are listed below:
– Process input: glue
– Process settings: cycle time; fixture
– Environment: outside temperature, humidity, etc.

For example, the variables that might affect the output of a gluing process are listed below:- Process input: glue- Process settings: cycle time; fixture- Environment: outside temperature, humidity, etc.

Based on this, you might conclude that the viscosity of the glue and the ambient humidity are two variables that need controlling.

But how can you get that information? It often comes from engineers, chemists, physicians, etc. but it can also come from operators who have been working on that process for some time and may have noticed some cause-and-effect relationships.

For more information on this step, ‘Reducing Production Costs’ by Don Wheeler is an excellent resource.