Abstract:
A simplified arrangement for alternatively displaying in inch or metric numerical units the corresponding lineal value of a digital signal train generated by a measuring transducer. This arrangement includes a counter-display which will alternatively count and display in response to each digital signal in either of two incremental numerical values related by a factor of 25 X 10n. The digital signal rate generation is set such that in counting and displaying in one of the incremental numerical values, the actual measured lineal distance corresponding to each digital signal corresponds to the numerical incremental value in metric units, so that in this mode the counter-display reads out metric (millimeters) directly. In the alternative mode, the digital signals generated are reduced by the ratio 25.0/25.4, eliminating one digital signal in every 63.5 signals generated by appropriate disclosed circuitry, and causing the main counter to count and display in the other incremental numerical value in response to each digital signal, thus resulting in an inch unit read-out.
Abstract:
A drive system for positioning the tooling of linear transfer automatic gaging and/or assembly machines is disclosed which allows the use of standardized modular components for greatly varying machine applications. The drive system includes a power take-off shaft extending along the machine workpiece transfer system and a series of motion mechanisms located at each tooling station, each motion mechanism including a rotary cam driven by a flexible drive element in turn driven by the power take-off shaft, a pivoted lever oscillated by the rotary cam, and a tooling mounting slide translated by oscillation of the pivoted lever. Variations in the position of the tooling relative the power take-off shaft and the transfer system required for various applications are taken up in the flexible drive element to allow the use of standardized cam-lever-slide modules for the varying machine configurations.
Abstract:
A coordinate measuring machine is disclosed of the type having a measuring probe traversed along coordinate axes by means of bearing supported carraiges with means for indicating the position of the probe by measuring the corresponding position of the carriages, the improvement consisting of means for impressing a vibratory movement on each carriage having a component along the direction of motion combined with an averaging arrangement for indicating the average position of each carriage so as to eliminate the non-correspondence between movement of the probe and movement of the carriage caused by bearing friction inducing structural deflection of the parts.