Lathe for generating spherical or aspherical surfaces on workpie

Details Lathe for generating spherical or aspherical surfaces on workpie Lathe for generating spherical or aspherical surfaces on workpie

1975-04-16

1976-08-31

Vlachos, Leonidas

Turning

Axial pattern

82 12, 51101LG, B23B 328, B23B 540

Patent

active

039772799

ABSTRACT:
A lathe for generating spherical surfaces of selected radiis on workpieces in the usual manner but which is provided with curve-selecting adjustable means for generating aspherical surfaces which deviate from the spherical surfaces in a predetermined relationship. The lathe is provided with the usual spindle which carries the workpiece for rotation about its fixed axis and a feed carriage which carries a suitable generating tool for swinging about a fixed pivot in generating contact with the face or surface of the workpiece. The feed carriage for supporting the generating tool includes means for supporting it for axial floating movement and means for constantly biasing it into contact with the surface of the workpiece. The curve-selecting adjustable means for causing deviations from spherical in the generated surface produced on the workpiece includes a cam of predetermined fixed curvature and a follower carried by the feed carriage along its centerline which passes through the fixed pivot, which is caused to constantly engage the cam by the feed carriage biasing means. It also includes means for supporting the cam independently of the feed carriage for adjustment selectively in either or both of two directions, relative to the fixed carriage pivot, in the direction of the axis of rotation of the workpiece or at a right angle thereto.

REFERENCES:
patent: 3040607 (1962-06-01), Bulliet
patent: 3212370 (1965-10-01), Spriggs et al.
patent: 3881378 (1975-05-01), Bettiol

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