Patent ID: 7302877
Filing Date: 2007-12-04
Classification: B23B,Y10T

Abstract:
1. An automatic bar-loader for lathes including: a channel through which a bar can be fed to a lathe mandrel; an electric motor; a bar-pusher powered by the electric motor; a control unit connected to at least one of the electric motor and the bar pusher; the bar-pusher comprising a head collet that can grasp a tail of a bar in the channel, thereby moving the bar in the channel; and at least one of the bar-pusher and the head collet thereof including a sensor that can measure axial shifting of the bar-pusher and that can supply a feedback signal to the control unit to control the bar-pusher motor, the sensor including a rule parallel to the bar-pusher and a position sensor member running along the rule to detect a position of the bar-pusher along the rule, the sensor member being connected to move integrally with the bar-pusher and the rule running along a guide parallel to the bar-pusher channel.