In-Process Inspection

In-process inspection is the process of investigating a produced feature within the same process flow, directly after the feature has been machined. In-process inspection is carried out on the same machine and in the same setup which is used for producing the feature. This process consists of a visual inspection to check the surface finish as well as a dimensional measurement of the feature. The visual inspection can be carried out by means of the operator inspecting the produced feature visually or by feel as appropriate. This would be to check for any marks, indentation or similar defects if any are produced on the surface. If the feature is critical, surface measuring instruments are used to check the surface finish accurately within the process. For dimensional measurement, the operator checks the critical dimensions of the feature produced using measuring instruments such as vernier gauges and micrometers.