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AssigneesCentre Technique des Industries Mecaniques, Ecole Nationale Superieure D'Arts Et Metiers (Ensam)
InventorsUgo MASCIANTONIO, George MORARU
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A machining spindle that includes a tool-holder shaft (2), a first actuator connected to a coupling member (11) slidably connected to a first section (21) of the shaft to rotate the shaft, a second actuator connected to a nut helically connected to a second section (22) of the shaft to move the shaft axially and a control rod (24) of a tool-holder attachment system connected to the second section by a full connection. The spindle includes locking means (40) mounted movable between the first and second sections by switchover means (50), between a first position in which the first and second sections are in full connection and a second position allowing axial movement of the second section relative to the first section, enabling the control rod to be moved axially under the action of the second actuator to control the attachment system in a released position of the tool holder.
A machining spindle comprising a tool-holder shaft, having a front end on which a tool holder is able to be mounted via an attachment system between the tool holder and the front end of the shaft, the spindle comprising a first drive actuator for driving the shaft, which is connected to a coupling member that is slidably connected to a first portion of the shaft in order to drive the shaft in rotation, and a second drive actuator which is connected to a nut that is helically connected to a second portion of the shaft in order to move the shaft axially, said first and second portions extending successively along a common length of the shaft between the front end of the shaft and an opposite end of the shaft, the spindle comprising being characterized in that it comprises a control rod for the tool holder attachment system, which is connected to the second portion of the shaft by a solid connection, and in that it comprises locking means mounted so as to be movable between the first portion and the second portion of the shaft by way of switching means, between a first position in which the second portion of the shaft is solidly connected to the first portion of the shaft, and a second position in which the second portion of the shaft is slidably connected to the first portion of the shaft, allowing an axial movement of the second portion with respect to the first portion in order to allow the control rod to be moved axially under the action of the second drive actuator so as to make the attachment system pass into a position releasing the tool holder.
Dependencies are inferred from the claim text.