DEVICE FOR MACHINING END SURFACES OF PARTS Russian patent published in 1998 - IPC

FIELD: mechanical engineering. SUBSTANCE: this relates to metal-cutting machines and can be used for machining step bearing of above-spring beams of railway cars. Device has frame with motor mounted on it, spindle, cutter-holding unit with rest. Spindle is installed for possible reciprocal motion and is connected with motor through reduction unit. Lower end of spindle is connected with cutter-holding unit. Made in end surface of aforesaid unit are slots for radial displacement of one or several rests. Arranged inside cutter-holding unit is disk which is kinematically connected with rests and with reduction unit which in its turn is engaged with driving gear mounted on housing of cutter-holding unit. At rotation of cutter-holding unit, braking mechanism ensures braking of driving gear. Device is provided with follow-up system which keeps track of moving rest with cutter in machining of part. EFFECT: higher efficiency. 1 cl, 5 dwg