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US 2001/0026050 A1Published application
High precision expanding mandrel with quick sleeve change
AssigneeSandvik Tobler S.A.
InventorJacques Barbieux
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AssigneeSandvik Tobler S.A.
InventorJacques Barbieux
Estimating the term…
The invention provides an expanding mandrel comprising a shaft (1) having a conical forward end (10), an expanding sleeve (5) constituted by a ring provided with longitudinal slits designed to slide over said conical forward end (10), the inner wall of said sleeve (5) itself also having the shape of a cone the apex angle of which is equal to that of the conical forward end (10), and a tie member (2) designed to be connected to a rod that can be caused to slide along the axis of the machine spindle to control the gripping or the release of a workpiece. According to the invention, the sleeve (5) is connected to said tie member (2) via a control ring (3) integral with the tie member (2), and the mandrel comprises a removable quick mounting means enabling the sleeve (5) to be secured to said control ring (3).
Expanding mandrel comprising a shaft (1) having a conical forward end (10), an expanding sleeve (5) constituted by a ring provided with longitudinal slits designed to slide over said conical forward end (10), the inner wall of said sleeve (5) itself also having the shape of a cone the apex angle of which is equal to that of the conical forward end (10), and a tie member (2) designed to be connected to a rod that can be caused to slide along the axis of the machine spindle to control the gripping or the release of a workpiece, the sleeve (5) being connected to said tie member (2) via a control ring (3) integral with the tie member (2), characterised in that the mandrel comprises a removable quick mounting means (4) enabling the sleeve (5) to be secured to said control ring (3).
Dependencies are inferred from the claim text.