| 摘要 |
1,030,082. Gear-finishing. G. KEHR. Sept. 7, 1964 [Sept. 7, 1963], No. 36505/64. Headings B3B, B3D, B3K and B3T. Apparatus for finishing gear-wheels comprises a plurality of tools, for operating on the gears as they are carried round on a turntable 13, the tools including, in order, cutters 21a for removing burrs at the leading edges of the teeth, a milling cutter 21b for milling the leading edges of the teeth and brushes 21c for fine deburring and cleaning. The turntable is indexed by a motor 14 and rollers 16a, 16b or any other means. The tools are carried on adjustable supports 20 on a ring 19. Except at the milling-station B and the loading station E, the gears are rotated by a chain 24 driven by a motor 27. The milling cutters are carried by an adjustable slide 29 on a support 20. The slide 29 carries an upper slide 32 fed to a working position by a pneumatic device 33 in association with a dash-pot. The slide 32 carries a cutter-slide 36 which is reciprocated by a pneumatic device 37 as limited by stops 40, 40a and a dashpot 41. The milling-cutters 21b machine the upper and lower faces of the gear between displaced tooth spaces for a time determined by a delay device. The gear is indexed by a spring-pressed plunger 57 and a pawl 62 which is actuated by a lever 65 when the slide is withdrawn. Reciprocations of the slide 36 continue until terminated by a pre-set electrical counting-device. A time delay then allows for withdrawal of the slide 32. If a tooth is not properly positioned, the plunger 57 is pushed back and stops the machine. The milling cutters 21b are adjustable transversely, axially and vertically and are rotated by compressed air motors at 60,000 r.p.m. |
