Boots – shoes – and leggings
Patent
1994-10-27
1996-07-23
Gordon, Paul P.
Boots, shoes, and leggings
36447415, 219 6917, G06F 1500, G05B 1918
Patent
active
055396488
ABSTRACT:
A method of producing a multi-apertured workpiece such as a fuel injector comprising forming an aperture in a workpiece by EDM machining (10), supplying a calibrating fluid such as deionised water through the aperture from a reservoir (17) via a pump (18), measuring the flow and pressure through the aperture by transducers (19, 20) and comparing the results with a predetermined ideal, adjusting the EDM machine (10) in accordance with such comparison so as to compensate for the difference between the measured values and the predetermined ideal, forming a further aperture using the adjusted EDM machine (10) and repeating the preceding steps until the appropriate number of apertures has been formed. The apparatus may include CNC operation (14) and the comparison may be made by computer (15) linked to the CNC (14) for adjusting the EDM machine (10).
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Amchem Company Limited
Gordon Paul P.
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