Clamp jaw clamping and releasing mechanism of lathe clamp head

The utility model discloses a clamp jaw clamping and releasing mechanism of a lathe clamp head. The mechanism comprises a clamping and releasing tube and a boss. One end of the clamping and releasing tube is provided with multiple fixing holes, the other end of the clamping and releasing tube is sleeved with the boss circularly, the wall of the clamping and releasing tube is provided with limit grooves, the wall of the clamping and releasing tube is provided with LED lamps, and the boss is provided with a retraction and clamping device provided with a retraction controller; the inner wall of the boss is provided with an annular groove, and the boss of the peripheral groove is provided with an annular rib; the retraction controller comprises a housing, a motor, a rotary shaft and a fixing ring; the motor is welded into the housing, one end of the motor is connected to a rotary shaft, and one end of the rotary shaft penetrates the housing to connect to a bolt; a fixing ring is fixed to the inner wall of the housing, and the retraction and clamping device is of a metal wire. Since the mechanism adopts the retraction and clamping device, the stability is further improved, and the fixing manner is simple and convenient to implement.