Microfinishing machine

B - Operations – Transporting – 24 – B

Patent

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Details

B24B 21/20 (2006.01) B24B 5/42 (2006.01) B24B 19/12 (2006.01) B24B 21/02 (2006.01) B24B 21/16 (2006.01) B24B 49/00 (2006.01)

Patent

CA 2259240

A sizing and finishing machine includes a mechanism for rotating an associated workpiece (50) and a first microfinishing belt (16) for selectively contacting the associated workpiece (50). The belt (16) has a maximum grit size of 60 microns. A structure is provided for rotatably holding the first microfinishing belt (16) and a housing (42) is provided on which the structure is mounted. A mechanism moves the first housing (42) and hence the first microfinishing belt (16) toward and away from the associated workpiece (50). The mechanism is timed to the rotation of the associated workpiece (50) to maintain a substantially constant pressure of the first microfinishing belt (16) on the associated workpiece (50). If desired, a second microfinishing belt (16) can be provided with the two housings (42) and their respective belts (16) being separately controlled. The force exerted by the microfinishing belt (16) on the associated workpiece (50) is limited to a pressure of less than approximately 25 psi.

L'invention porte sur une calibreuse/superfinisseuse comportant un mécanisme de mise en rotation d'une pièce à usiner (50) associée, et une première bande de microfinition (16) entrant sélectivement en contact avec ladite pièce (50). La bande (16) présente une grosseur de grains d'au maximum 60 microns. La machine comporte une structure rotative supportant la première bande de microfinition (16) et un boîtier (42) sur lequel est montée ladite structure. Un mécanisme déplace le premier boîtier (42) et donc la première bande de microfinition (16) plus ou moins près de la pièce à usiner (50). Le mécanisme est synchronisé avec la rotation de la pièce à usiner (50) de manière à maintenir une pression sensiblement constante de la bande (16) sur la pièce à usiner (50). On peut prévoir si nécessaire une deuxième bande de microfinition (16) montée séparément sur un deuxième boîtier(42), les deux boîtiers (42) et leurs bandes (16) respectives étant alors commandés séparément. La force exercée par les bandes (16) sur la pièce à usiner (50) est limitée pour que la pression reste inférieure à 25 psi environ.

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