Process Variability

  • Ken Stout


It seems generally accepted that errors of a dimensional nature exist in all manufacturing processes, the extent being dependent on many factors. Determining a measure of the process capability of production lies in assigning the causes of variation in the process to sources of dimensional errors in the machines being used. Process control is particularly relevant to automatic machines where the majority of work is not usually required to be of a high accuracy. However, the lack of human intervention places a more stringent requirement on machine design for dynamic stability and long term dimensional control.


Tool Wear Process Capability Workpiece Material Dimensional Error Thermal Distortion 
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© Ken Stout 1985

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  • Ken Stout

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