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The Design of a Manual Numerical-Control Circuit for Stepping Motors
Abstract
The successful application of a stepping motor to drive an indexing or positioning machine depends on the accurate knowledge of the machines components, resolutions and dynamic behaviour. This paper describes the design of an electronic numerical control system used to measure the necessary mechanical characteristics of a machine tool prior to its being retrofitted with stepping motor drives. This design enables the manual selection of the axis to be driven and the axis displacement after which motion on the axis is automatically halted. Using this design a machine resolution (accuracy) of 0.00254mm (0.0001 in) was achieved on the machine tool used in this investigation.
