Abstract: A cooling chuck relating to a technical field of mechanical manufacturing of drill chuck is provided, including a drill body, a clamping jaw, a nut, a sleeve and a back cover, wherein: a connection hole is provided at a back end of the drill body for connecting to a drive mechanism; a clamping jaw outlet is provided at a front end of the drill body; a clamping jaw cavity is arranged on the drill body outside the connection hole at the back end of the drill body; the clamping jaw is arranged in the clamping jaw cavity; a thread section is arranged at a back part of the clamping jaw; the thread section at the back part of the clamping jaw is engaged with the nut arranged at an outer side surface of the clamping jaw cavity; the nut is connected to the sleeve; the back cover is arranged at the back end of the drill body; a clamping jaw slope is arranged at a back end of the clamping jaw; the clamping jaw slope inclines downward clockwise or anticlockwise along a rotation direction of the drill body; air inlets ar

Abstract: A cooling chuck relating to a technical field of mechanical manufacturing of drill chuck is provided, including a drill body, a clamping jaw, a nut, a sleeve and a back cover, wherein: a connection hole is provided at a back end of the drill body for connecting to a drive mechanism; a clamping jaw outlet is provided at a front end of the drill body; a clamping jaw cavity is arranged on the drill body outside the connection hole at the back end of the drill body; the clamping jaw is arranged in the clamping jaw cavity; a thread section is arranged at a back part of the clamping jaw; the thread section at the back part of the clamping jaw is engaged with the nut arranged at an outer side surface of the clamping jaw cavity; the nut is connected to the sleeve; the back cover is arranged at the back end of the drill body; a clamping jaw slope is arranged at a back end of the clamping jaw; the clamping jaw slope inclines downward clockwise or anticlockwise along a rotation direction of the drill body; air inlets ar

Abstract: A drill chuck comprises: a drill body having a plurality of inclined guiding holes distributed evenly along a circumferential direction; a plurality of clamping jaws arranged slidably in the inclined guiding holes respectively and having external thread segments; an outer socket rotatably fitted over the drill body; and a nut engaged with the clamping jaws and connected to the out socket in a driving manner; further comprises: a locking mechanism located between a first thrust surface of the drill body and the nut and having a locking plate and locking balls, wherein an end face of the locking plate facing the nut is thereon provided with a plurality of slide grooves having a helix angle, the helix angle of the slide grooves is less than a friction angle between the locking balls and locking plate, and the locking balls are movably arranged along the slide grooves.

Abstract: A drill chuck comprises: a drill body (1) having a plurality of inclined guiding holes distributed evenly along a circumferential direction; a plurality of clamping jaws (9) arranged slidably in the inclined guiding holes respectively and having external thread segments (91); an outer socket (2) rotatably fitted over the drill body; and a nut (8) engaged with the clamping jaws and connected to the out socket in a driving manner; further comprises: a locking mechanism located between a first thrust surface of the drill body and the nut and having a locking plate (3) and locking balls (4), wherein an end face of the locking plate facing the nut is thereon provided with a plurality of slide grooves (31) having a helix angle, the helix angle of the slide grooves is less than a friction angle between the locking balls and locking plate, and the locking balls are movably arranged along the slide grooves. The drill chuck can prevent itself from loosening by a simple structure during operation.