Horizontal disc grinder with equal feed control from workpiece contact

Abstract

Abstract AN AUTOMATIC FEED APPARATUS FOR A HORIZONTAL DISC GRINDER IS USED TO EFFECT EQUAL AND/OR UNEQUAL MOVEMENT OF OPPOSED GRINDING DISCS (14L, 14R) AS REQUIRED BY GRINDING STOCK LOCATION, TO REMOVE AN EQUAL AMOUNT OF STOCK FROM THE PARALLEL SURFACES (21, 22) OF DISC-TYPE WORKPIECES (W). A FACE CUT FEED SYSTEM IS HYDRAULICALLY OPERATED TO EFFECT FIRST A RAPID MOVEMENT IN UNISON OF TWO GRINDING HEADS (11L, 11R) UNTIL ONE OR THE OTHER DISC CONTACTS THE WORKPIECE (W), THEN THE MOVEMENT OF EACH GRINDING HEAD (11L, 11R) IS CONTROLLED IN RESPONSE TO SEQUENTIAL CONTACT OF THE DISCS (14L, 14R) WITH THE CORRESPONDING SIDES (21, 22) OF THE WORKPIECE (W). INDIVIDUAL MOTOR LOAD SENSORS (1MLS, 2MLS) ACTUATE MOTOR LOAD RELAYS (1CRE, 2CRE) WHICH ARE USED TO CONTROL FIRST A SEQUENTIAL MOMENTARY STOPPAGE IN FEED MOVEMENT OF FIRST ONE AND THEN THE OTHER GRINDING HEAD FOLLOWED BY RESUMPTION OF FURTHER INFEED IN UNISON AT A SLOW GRINDING FEED RATE, FOLLOWING A MONENTARY CONTROLLED TIME DELAY. FOLLOWING THE TIMED DELAY, AN EQUAL AMOUNT OF STOCK IS REMOVED FROM EACH PARALLEL SURFACE (21, 22) OF THE WORKPIECE (W) AS DETERMINED BY A METERED VOLUME OF FLUID WHICH IS DISCHARGED FROM A SINGLE DISPLACEMENT CYLINDER (64), WHICH PERMITS AN EQUAL INFEED MOVEMENT TO OCCUR IN EACH GRINDING HEAD (11L, 11R).

Inventors

• 👤 E Dunn

Bibliographic Details