Pneumatic three-jaw clamp

• Main Authors: ZHANG GUANLIN, WU CHAOPING, SHAO XIAOBIN
• Format: Patent
• Language: English
• Published: 22.10.2014
• Subjects: COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT; DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; TRANSPORTING

The utility model provides a pneumatic three-jaw clamp. The pneumatic three-jaw clamp comprises a circular bottom plate 1, a central shaft 2, a cylinder 3, a cross slide blocks 4, clamping jaws 5, link rings 6, slide grooves 7 and slide plates 8, and is characterized in that the central shaft 2 and the three slide grooves 7 are arranged on the centre of the surface A of the circular bottom plate 1; the central shaft 2 is connected with a machine tool spindle; one cross slide block 4 is arranged in each slide groove 7; one end of the cross slide block 4 is connected with one clamping jaw 5; the clamping jaws 5 are installed on the surface B of the circular bottom plate 1; the other end of the cross slide block 4 is connected with one slide plate 8; the circle centre end of the slide plate 8 is hinged with one link ring 6; the link ring 6 is installed on the central shaft 2; the head end and the tail end of the cylinder 3 are hinged to the two adjacent slide plates 8 respectively; the piston of the cylinder 3 shrinks to drive the clamping jaws 5 to clamp. The pneumatic three-jaw clamp provided by the utility model is capable of reliably guaranteeing the synchronous movements of the three clamping jaws, high in clampable dimensions, and capable of effectively improving the clamping accuracy and efficiency.