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This report outlines the design of the Drill Head for
a numerically controlled drilling machine.
The Committee chose to employ a nydraulic main spindle
drive. As a result of the problems experienced by Wadkin
Limited, Leicester, with hydraulic feed control, it was
decided to replace the original hydraulic feed actuator by
a conventional 18 speed gearbox. Drill depth control is
achieved by conventional gate stops employing pneumatic
sensing elements to keep in line with the fluidic elements
of the control system.
The latter section of the report makes recommendations
for future work on the design of feed mechanisms to avoid the
use of gearboxes. |
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