Analysis and problem solving of cylinder block balance shaft bore coaxiality deviation

The root cause of balance shaft bore coaxiality deviation is identified by combining the application of the source of variation analysis, process variation check, and deep dives of CMM measurement result. General variation factor that affects the overall coaxiality performance is eliminated by optimizing the process sequence. Special variation factor of problem concentrated machines is eliminated by multiple machine adjustment methods, thus solving the cylinder block balance shaft bore coaxiality deviation problem.