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An optical gaging system utilizes light to make dimensional, geometrical and positional checks on production parts.
Typical applications of optical-electric gaging systems include preprocess control of excessive stock, intermediate-process size control (for example, on centerless grinders), and postprocess checks for dimensional control or final inspection.
Optical-electric measurement technology is available in a number of gaging formats.
The third major modular gaging component is the X/Y coordinating table.
The final key component to the standard gage base is the mechanism that introduces the part to be measured into the gaging elements.
Cost can be one of the most profound advantages modular gaging has over hard dedicated gaging," insists Mr Stout.
Both Control Gaging Inc, Ann Arbor, MI, and Marposs offer in-process gages for ID grinding-slim sensing mechanisms for inserting inside the grinder's workhead.
There are some distinctions to be made between in-process gaging and the far broader field of post-process gaging.
In-process gaging does not really measure part size," notes Edmunds' Don Maurer.
Sometimes post-process gaging is combined with software offset to move the tool on a lathe by means of CNC.
Applications demanding reproducibility unaffected by the handling of different operators are best served by gaging machines, consisting of a base, slide mechanism, and gage head, coupled to electronics.
Gaging machines encourage inspection of every part.