Manual robotic tool changer with rolling members

A manually actuated robotic tool changer, comprising:

• a first unit adapted to be connected to one of a robotic arm or a robotic tool;
• a second unit adapted to be connected to the other of the robotic arm or the robotic tool;
• a plurality of rolling members retained in one of the units;
• a piston mounted in one of the units, the piston moveable along its axis between unlocked and locked positions under manual actuation, the piston having a multifaceted cam surface including an initial contact surface, a locking surface, and a failsafe surface interposed between the initial contact surface and the locking surface;
• wherein, when the piston is in the locked position, the cam surface is operative to contact the rolling members in one of the units and to urge each rolling member against a surface of the other unit to couple the two units together.