Patent attributes
A tool holder locking device has a base, a horizontal support mounted on the base to hold a first tool holder, and a vertical support mounted on the base to vertically hold a second tool holder. The horizontal support has a supporting block having a holding cavity and an engaging rib radially protruding from the holding cavity to engage with a gripper groove of the first tool holder, a first positioning member fixed on the supporting block to engage with a positioning notch of the first tool holder, and a second member fixed on the supporting block to engage with an orientation notch of the first tool holder. The vertical support has a supporting sleeve and a positioning block mounted on a bottom of the supporting sleeve and extending along a radial direction of the supporting sleeve to engage with two driving grooves of the second tool holder.