APPARATUS FOR AUTOMATIC CONTROL OF SPEED OF TOOL FEED AT WORKING Russian patent published in 2005 - IPC

FIELD: processes for working metals by cutting, machine tools with automatic control systems.

SUBSTANCE: apparatus includes circuit for automatic control of cutting effort and mechanism for slight movements of tool in order to provide in surface layer of worked parts uniform residual stresses due to stabilized variable components of cutting effort for one revolution. Mechanism for slight movements of tool is mounted on rest of machine tool; it includes cutter holder and hydraulic drives for tool slight movement coupled with cutter holder. Automatic control circuit is designed for controlling mechanism for tool slight movement; it includes connected in series primary effort converter, signal amplifier, band filter, first comparator provided with circuit for forming control signal related to mean value of cutting effort, electromagnetic converter connected with signal generator, hydraulic servo-drive, primary movement transducer connected in series with amplifier, second comparator, phase interlocking unit connected with inlet of electromechanical transducer.

EFFECT: enhanced accuracy for controlling speed of tool feed.

2 dwg