Device for the rotation of hollow bodies, in particular support of rotation of the bank for the production of a plurality of schalenfoermigen rotation bodies from a solid work piece, such as, for example, wood

摘要

926,459. Turning. N. O. T. LOOF. May 30, 1961 [June 16, I960], No. 19516/61. Class 83 (3). A method and apparatus for turning a number of hollow articles from a block of wood or the like comprises the use of a cutting tool, on a pivoted holder, which, in its arcuate movement, cuts a groove bounded by two spherical surfaces. The work 3 which may be hard-wood is rotated in the chuck 2 and an arcuate holder and tool 12 is pivoted about a pin 13 to enter the work. One surface forms the base of a hollow body such as a wooden bowl and the other surface forms the inner surface of the next article. The tool is fed by a link 10 connected to the tool-holder and to an adjustable position in a transverse slot in a carriage 6. Normal feed of the carriage thus feeds the tool. The pivot pin 13 of the tool is shown adjustable along the axis of the work by screw and bevel gears from a hand wheel 17. A nozzle 18 supplies a jet of air to clear the cuttings and cool the tool.