| 摘要 |
A gage controlled grinding method for oppositely disposed commonly tapered end bores in a workpiece, maintaining a constant spacing of two identical bore gage diameters independent of part length is disclosed. A machine such as an internal grinding machine utilizes a drive plate and support shoes for locating and driving the workpiece, and a pair of gage fingers are provided at axial points proximal and distal to the drive plate. A first tapered bore in the outboard end of the workpiece is ground and gaged to a predetermined diameter at a first fixed gage distance from the curve plate. The workpiece is turned end-for-end on the drive plate, and the previously finished bore is sampled by a second gage finger located at a second fixed gage distance from the drive plate. The sampled diameter is compared with a predetermined stored value, and the sampled diameter is subtracted from the predetermined stored value to generate a difference value. The difference value is added to the first predetermined diameter value to generate a third predetermined diameter value, and a second tapered bore is ground in the outboard end of the workpiece while in its second location on the drive plate, and interrupted when the first gage finger indicates that said third predetermined diameter is reached at the first gage distance from the drive plate.
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