Tool post assembly for quick displacement of a tool of a machine tool

A tool post assembly capable of allowing quick displacement of a tool of a machine tool, comprising:

• a tool post body having slide-side and carrier-side segments opposite to each other in a longitudinal direction, said slide-side segment being adapted to be mounted on the machine tool, said carrier-side segment having a mount surface which extends in the longitudinal direction away from said slide-side segment to terminate at a first marginal edge, and a front surface which extends from said first marginal edge in a first transverse direction that is transverse to the longitudinal direction;
• a carrier block having a top surface which extends in the longitudinal direction to terminate at a second marginal edge, and a rear surface which extends from said second marginal edge in the first transverse direction, and which is spaced apart from said front surface in the longitudinal direction;
• a linear guide mechanism which is disposed between said front and rear surfaces to permit said carrier block to be movable relative to said tool post body in the first transverse direction between normal and lifted positions;
• a ledge disposed to extend from said second marginal edge toward said first marginal edge;
• and
• a lever pivotally mounted on said mount surface about a pivot axis which is oriented in a second transverse direction that is transverse to the longitudinal and first transverse directions, said lever having a power end which is manually operable, and a weight end which extends beyond said first marginal edge, and which is engaged with said ledge such that, when said power end is actuated, said carrier block is moved from the normal position to the lifted position.