Importance

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Abstract

The disclosed tools and method perform measurements of bore parallelism and location in mating machine parts. One of the tools, used to perform measurements on bores in a machine part, includes two platforms separated by risers. The lower of the two platforms has a surface that mimics the mounting surface of a mating machine part. Spindle assemblies mounted on the upper platform are located in precise correspondence with the blue print locations of side-by-side bores in one of the mating machine parts. Each of the spindle assemblies comprises a hollow column receiving a rotatable spindle that carries a dial indicator at its lower end. To perform measurements on the machine part, it is fastened to the underside of the lower platform, and the movable probe of the dial indicator engaging one of the bores, a sweep of the feeler about the bore is performed by turning the spindle. Another tool includes a base with a surface that mimics the mounting flange of a machine part. Carried on the base is a spindle assembly located in precise correspondence with the blue print position of a bore in a mating machine part. With the base of the tool fastened to mounting pad on the mating machine part, the movable probe of a dial indicator fastened to the spindle assembly is swept about a bore in the mating machine part to perform measurements of the location and orientation of the bore.

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First Claim