| 摘要 |
1,080,053. Gear cutting. P. L. GLOCKER. Aug. 20, 1964 [Aug. 23, 1963], No. 34049/64. Headings B3B and B3K. [Also in Divisions F2 and G3] The axial or radial, cycloidal or involute teeth 4 of a wheel 1 which meshes a wheel the axis of which is at an angle (e.g. a right angle) to that of the wheel 1, as, e.g. in the set-hand drive of a watch, have tip relief in the form of convex surfaces of revolution 9 which intersect to provide a tip-line 10 which lies in a plane including the gear-axis and is inclined to the normal to that axis. The relief surfaces 9 are produced by a milling cutter 8 which rotates about a transverse axis spaced from the gearaxis and has a concave profile spanning two adjacent teeth and simultaneously cutting the relief 9 on their remote faces. A machine for producing the teeth 4 and relief 9 from a blank 1 chucked in a dividing head 17, comprises a first profile cutter 6 producing the involute of cycloidal tooth 4 and a second concave cutter 8 producing the relief 9. The cutters are carried on supports 23, 28 which slide vertically and in the direction of the work 1 on a support 18 which slides transversely of the work. The slide 28 of the relief cutter 8 can also be tilted about a horizontal transverse axis. Belt-driven pulleys 25,27 drive the shafts of the cutters. For radial teeth, Fig. 11, not shown, the blank is mounted on an arbor instead of a chuck. |
