PROTECTION DEVICE AGAINST OVERLOADS IN A MACHINE TOOL

摘要

Protection device against overloads in a machine-tool wherein a support (12) is slidingly mounted in the frame of the machine (11) by means of a threaded rod (16) between the tail stock and the head stock, a driving motor and a displacement gear (23). The nut (13) of the rod is connected to the support (12) by means of at least one connection screw (15). In order to allow a resetting as fast as possible of the machine after a collision between the support (12) and a member being on its way, by re-establishing the previous ratio of the dimensions without additional adjustement, the protection against overloads is provided by a lower resistance area (19) of the connection screw (15) in the connection point region between the support (12) and the nut (13).