Hitachi High-Tech Corporation

Mackenzie A Jackson

David P Jackson

John J Lee

This application presents a method and apparatus for cooling a through-ported cutting tool with a source of liquid COwith a compressed air line with a compressed air inlet and multiple COinjection capillary segments; the capillary segments interconnect to the same source of liquid COand can have high pressure valves and throttles; the throttles have different sizes; a first capillary ends near the cutting tool; the second capillary ends near the compressed air inlet. Using a particular sequence of opening or closing the valves to the liquid COto the capillaries, mixing with the compressed air provides and recycling the residual CO, this invention provides for uniform and controlled cooling of the cutting tool within a certain temperature range.

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Saugus, CA, United States of America

Mackenzie A Jackson