We find that there are 3 common practices among companies who are effectively minimizing process variation. (1) Real-time monitoring of manufacturing with operator access to data. (2) Visualization of process output for operators and supervisors. (3) Investigation into problems and prioritization of improvement initiatives.
Our discussion begins at 21:42 in the video.
Real-time Monitoring of Manufacturing with Operator Access to Data
Plus, it can be time consuming and cumbersome for someone outside the department to analyze or even look at the data.
Instead, the companies we see successfully minimizing process variation focus on using real-time monitoring by using software on the factory floor that can collect data from CMMs, scales, micrometers, and other production devices.
The companies use software to help them better detect trends and special causes underlying production issues or scrap/rework concerns.
A real-time SPC system uses statistical rules to identify the source of waste in a timely manner. Operators are alerted so that problems can be appraised and worked through or prioritized as they come up.
Visualization of Process Output for Operators and Supervisors
In a typical manufacturing plant there are hundreds of characteristics to monitor. The operators are usually focused on only the few characteristics that impact the production area they are responsible for.
To identify broader sources of variation, managers usually use some type of plant-wide or summary view. With a dashboard style view, problems become immediately visible, making rapid response a much more likely outcome.
Investigation Into Problems and Prioritization of Improvement Initiatives
The companies we see successfully reducing process variation start by taking all their historical data from their real-time monitoring systems, and searching for excessive variation. The goal here is to expose opportunities that would have otherwise gone unnoticed.
One company in the food packaging industry was able to analyze their historical production data not by product or process, but instead by fill heads and operators. They identified a situation where operators were making changes to the line that resulted in more variation, not less. It’s this type of investigation that companies who are successfully minimizing variation do on a regular basis.
About DataNet Quality Systems
DataNet Quality Systems empowers manufacturers to improve products, processes, and profitability through real-time statistical software solutions. The company’s vision is to deliver trusted and capable technology solutions that allow manufacturers to create the highest quality product for the lowest possible cost. DataNet’s flagship product, WinSPC, provides statistical decision-making at the point of production and delivers real-time, actionable information to where it is needed most. With over 2500 customers worldwide and distributors across the globe, DataNet is dedicated to delivering a high level of customer service and support, shop-floor expertise, and training in the areas of Continuous Improvement, Six Sigma, and Lean Manufacturing services.