Swinging chuck for turning machines
AssigneeWilhelm Blessing
InventorWolfgang Becker
Life of this patent
Estimating the term…
Abstract
A swinging chuck for turning machines such as lathes or the like comprising a chuck body and chuck jaws mounted on radial pivot axes, means for pivoting the chuck jaws around the pivot axes and means for locking the chuck jaws at the desired pivot position, and axially movable actuation means for causing radial reciprocation of the jaws.
Claims22
A work piece gripping chuck for use on turning machines, comprising:
- a. a cup-shaped body having a continuous cylindrical periphery wherein said body is adapted to be mounted on and for co-rotation with a machine spindle and wherein said body includes a pair of diametrically opposed radial bores;
- b. a pair of diametrically opposed, radially extending clamping jaws mounted in said body for radial reciprocation towards and away from each other as a means for gripping and releasing a work piece and wherein each of said jaws includes a cylindrical jaw pin slideably guided in said radial bores;
- c. a clamping plate centrally positioned in said chuck body and guided for axial translational movement;
- d. a pair of parallel accuating bars axially reciprocal in said body and connected to said plate;
- e. means for coupling each of said accuating bars to a respective clamping jaw and means for converting common horizontal movement of said accuating bars into radial movement of said jaws, wherein said coupling means and said converting means engage each of said jaw pins respectively intermediate of their end portions guided in said radial bores, and wherein further each of said clamping jaws further comprises jaw bases including a central spindle portion rotatably mounted within a hollow radial inner end of each of said jaw pins respectively;
- and,
- f. drive means for rotating said clamping jaws about an axis of radial reciprocation and means for locking said drive means in position wherein said jaw bases have a peripheral portion surrounding said radial inner end of said jaw pins respectively and in driving engagement with said rotating means.
A swinging jaw chuck for turning machines comprising a substantially cylindrical body, a pair of oppositely disposed clamping jaws for centrally clamping a workpiece, said clamping jaws comprising radially guided cylindrical jaw pins, force converting means engaging each of said jaw pins, a common drive means acting on said drive pins through said force converting means whereby said drive means acts along the longitudinal axis of said body and said force converting means converts the longitudinal force to a radial force on said jaw pins, said jaw pins being mounted in radially disposed cylindrical openings in said body, means for rotating one of said clamping jaws about a radial axis and means for locking said jaw in position, said rotating and locking means being radially inwardly of said force converting means in said body, and said clamping jaws further comprising jaw bases, one of said jaw bases being radially mounted on one of said jaw pins and being engageable by said rotating and locking means, said common drive means including an axially translatable clamping plate centrally positioned in said chuck body and linked to said jaw pins by said force converting means, said force converting means comprising two angle levers each having a drive connection to one of said jaw pins.
Dependencies are inferred from the claim text.