Tool mount for a machining apparatus

A tool mount for a machining apparatus comprising:

• an integration of tool holder cubic and flat base plate which is adapted to be fixed to the spindle of said machining apparatus, said holder cubic having a center guide projection defined by parallel longitudinal slots on its opposite sides, a notched cylindrical rod rotatably fitted in the hole of said center guide projection, means for rotating said notched cylindrical rod, and a wedge whose width diverges somewhat downwards, said wedge being inserted in one of said slots, and resiliently urged upwards in its fastening position;
• an adapter to be detachably attached to said tool holder cubic, having a center slot to accept said center guide projection of said tool holder cubic, parallel longitudinal projections on either side of said center slot to slidably fit in said parallel slots of said tool holder cubic, a semicircular recess made in one of said parallel longitudinal projections to allow said notched cylindrical rod to enter when it turns;
• and means for depressing said wedge towards its unfastening position to permit said adapter to slide in said parallel slots of said tool holder cubic, for rotating said notched cylindrical rod to enter said semicircular recess, thereby allowing said adapter and said tool holder cubic to nest together, and for releasing said wedge to resiliently return to its fastening position in which said adapter and said tool holder cubic are integrally connected.