An apparatus and method for machining with cryogenically...

B - Operations – Transporting – 23 – Q

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B23Q 11/10 (2006.01) B23B 27/10 (2006.01)

Patent

CA 2448747

A method and an apparatus for machining a workpiece include the use of a cryogenically cooled oxide-containing ceramic cutting tool. The method involves cryogenic cooling of the cutting tool during a cutting operation, which cooling results in enhanced wear resistance and fracture resistance of the cutting tool. A preferred embodiment involves jetting a cryogenic fluid directly at the cutting tool.

La présente invention concerne un procédé et un dispositif permettant l'usinage d'une pièce, faisant intervenir l'utilisation d'un outil de découpage en céramique contenant de l'oxyde, à refroidissement cryogénique. Le procédé fait intervenir le refroidissement cryogénique de l'outil de découpage durant l'opération de découpage, ledit refroidissement conférant à l'outil de découpage une résistance à l'usure et une résistance à la rupture améliorées. Un mode de réalisation préféré de l'invention comprend la projection directe d'un liquide cryogénique sur l'outil de découpage.

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