Chuck for gears and the like

摘要

938,896. Chucks. ERICKSON TOOL CO. March 21, 1961 [Nov. 3, 1960], No. 10325/61. Class. 83 (3). A chuck 1 for a gear cluster W comprises locators 34, 341 actuated by spring jaws 9, 27, respectively, to locate gear teeth 30, 31, on the cluster, the jaws being moved to release the work by a pneumatic piston 12 which moves an actuator 19 against jaws 9, and rods 29 against jaws 27. Piston 12 is slidably mounted in a cylinder 11 located between discs 4, 2 and the left-hand side of cylinder 11 is supplied with air through a port 17 thus moving the piston, actuator 19, and rods 29, to the right to swing the jaws outwardly and allow springs 35, 351 to move locators 34, 341 outwardly to release cluster W. Disc 4 carries three jaws 9, and a ring 22 supported on disc 4 by three blocks 21, carries three jaws 27 circumferentially and radially spaced with respect to jaws 9. Each set of locators 34, 341, is carried by a ring 32, 321 secured to disc 4 and ring 22 the locators being axially offset in the rings to allow reversal of the latter for use with a different gear cluster. The faces 10 of jaws 9 are ground when a pressure of 10 lb. per square inch is applied to piston 12, and faces 28 of jaws 27 are ground when a pressure of 30 lb. per square inch is applied, so that when the pressure is released with the work in place, the teeth of the latter will be gripped by locators 34, 341. A work stop 15 is provided, and coolant is supplied to the work through a pipe 20. Specification 856,272 is referred to.