Manufacturing of components for valve mechanisms for internal combustion engines
AssigneeSaab AB
InventorsKent Strand, Sven-Åke Karlsson, Stefan Ekblad
Life of this patent
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Abstract
A method for fabricating components such as rocker arms (4), cam followers (3) or cams for valve mechanisms for combustion engines, in which a billet of an MMC material (Metal Matrix Composite) containing 10–70% ceramic material by volume in the form of particles or fibers is extruded into a bar (1, 2) having the cross-sectional profile of the final component (3, 4), and where separate billets for the respective components (3, 4) are obtained by cross-cutting the bar (1, 2) by means of cutting via high-speed machining, HSM.
Claims4
A method for fabricating a valve mechanism component for combustion engines, comprising:
- extruding a billet of a metal matrix composite (MMC) material containing 10% to 70% ceramic material by volume in the form of particles of fibers into a bar that has a cross-sectional profile that essentially coincides with the desired cross-sectional profile of the fabricated valve mechanism component;
- obtaining separate billets for respective components by cross-cutting the bar by of cutting via high-speed machining, wherein said high-speed machining is characterized in that a very high power density is achieved in front of the cut and in that cutting forces tend asymptotically toward zero;
- machining the component into its final form by cutting via high-speed machining, HSM.
Dependencies are inferred from the claim text.