SPECIALIZED AUTOMATIC LATHE Russian patent published in 2005 - IPC

FIELD: machine tool manufacture, cutting helical grooves with constant pitch.

SUBSTANCE: automatic lathe includes housing, main motion drive, clamping device provided with chuck mounted on spindle of main motion drive and joined through rod of clamp of collet chuck and bearing coupling with pneumatic cylinder, kinematic circuit for matching rotation of spindle with tool movement, tool feed drive having cutter rest, tail stock. Clamping device includes collet chuck coupled with mechanism for detecting part presence. Pneumatic cylinder has double-side hollow rod mounted on the same axis as rod of collet chuck clamp. On end of said rod body of bearing coupling is mounted; said body is joined through tie rod with mechanism in the form of spring-loaded sleeve for knocking out worked parts. Housing of pneumatic cylinder is secured to housing of main motion drive. Tool feed drive is in the form or rotary drum having on outer surface closed helical groove for moving roller whose axle is mounted in body of skids of lengthwise slide block mounted with possibility of motion parallel relative to spindle rotation axis on dovetail type guides. Cross slide block is mounted on body of skids of lengthwise slide block. Cross slide block includes cutter rest mounted with possibility of motion along prismatic guides until adjustable stop. Roller engaged with grove of contour follower rigidly secured to housing of machine tool is also mounted on body of skids of lengthwise slide block. Direction of groove of contour follower is parallel to spindle rotation axis. Tool rest is provided with its own drive from telescopic two-stroke cylinder whose rod through T-shaped groove is secured to rod of pneumatic cylinder for approaching cutter.

EFFECT: enhanced efficiency, high automatization degree of working process.

5 dwg