Machine spindle or tool holder having an integrated chuck...

B - Operations – Transporting – 23 – B

Patent

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Details

B23B 19/02 (2006.01) B23B 31/30 (2006.01) B23B 31/40 (2006.01)

Patent

CA 2122900

Rotatable holder for tools and work pieces, in the form of a machine spindle (7) for machine tools and having a clamping device (8) formed as an integral part thereof and being in the form of a hydraulic clamp bushing (8) for tools or work pieces, for instance a chuck, and a method for the manufacture of such a holder, whereby a machine spindle (7) is manufactured separately without any demands on accurate dimensions, and a hydraulic clamp bushing (8) is manufactured separately, likewise without any demands on accurate dimensions, whereupon the spindle (7) and the clamp bushing (8) are weld or solder connected to form an integral unit by means of a weld or solder method transmitting a minimum of heat, whereupon the bearing areas of the spindle (7) and the clamping bore (17) of the clamp bushing (8) are finally worked to accurate dimensions and a high radial rotary precision.

Support orientable pour outils et pièces de travail, ayant la forme d'une broche (7) pour machine-outil et équipé d'un dispositif de serrage (8) faisant partie intégrante du support et ayant la forme d'une douille de serrage hydraulique (8) pour outils ou pièces de travail, tel un mandrin. La présente invention fait également état de la méthode de fabrication du support, selon laquelle une broche de machine-outil (7) et une douille de serrage hydraulique (8) sont fabriquées séparément sans exigences particulières en matière de précision des dimensions, et elles sont par la suite soudées ensemble par une méthode ne transmettant qu'un minimum de chaleur, de manière à former une seule pièce. Les surfaces d'appui de la broche (7) et du trou de serrage (17) de la douille de serrage (8) sont finalement usinées selon des dimensions précises et une grande précision dans le sens radial.

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