Read this article. It describes an example-generic production process and seeks to identify bottlenecks within the overall process. Focus on the Theory of Constraints, its uses, and its approach to production efficiency.
Identification of bottlenecks and analysis of the state before applying lean management
Conclusion
On the basis of the carried out preliminary analysis it was stated that the lack of proper
organization of the place and time of work, lack of proper preparation in terms of content
and equipment, lack of proper work standards, and what unfortunately in the case of the RZ
machine are very important factors of losses. Those factors play a very important role in the
analysed changeover. The amount of time lost on the process of screwing in and removing
the screws is also important. A positive aspect of the changes that should be carried out is
the fact that they are not issues that require large investments.