Patent GB-1098038-A (GB)
Title: Improvements in or relating to grinding apparatus
Inventor: KELLY THOMAS JAMES
IPC: B24B41/00
Filed: 1965-04-12
Abstract: 1,098,038. Grinding billets. CARBORUNDUM CO. April 12, 1965, No. 15578/65. Heading B3D. Apparatus for supporting and conveying billets in a grinder having a beam 6 supported between standards 2, 4 and a grinding-wheel assembly 14 on a carriage 8 mounted for movement along the beam, comprises a car 18 movable transversely relative to the beam along rails 16 between the standards, a billet holding fixture 38 on the car, a storage table 100 separate from the car and having a billet supporting surface overlapping the fixture when the car is positioned adjacent the table, and a fence 110 movable on the table for removing billets from the supporting surface to the fixture. The grinding-wheel assembly 14 is driven by a motor on the carriage which is supported by rollers on rails 10, 12 on the beam for movement therealong. The car 18 consists of a frame 22 supported by wheels for movement along the rails 16. The billet-holding fixture 38 consists of a beam which has a billet-supporting surface 62, Fig. 5, and a pair of end plates 60 secured to stub shafts 40 mounted in pillow blocks on the car, one of the stub shafts being connected to an electric motor whereby the fixture 38 can be moved about the axis of the stub shafts so that the billet can be positioned to enable the grindwheel assembly to operate on the corners of the billet. One longitudinal edge of the surface 62 is formed with a stop 64 against which a billet to be ground is releasably pressed by clamp arms 84 movable about pivots 88 by hydraulic devices 92. A plurality of cams 72 are mounted on a rod 66 supported in bearings adjacent the stop 64 and a pair of hydraulic devices 76 are operative, when the clamp arms are retracted to raise lobes from below the surface 62 and engage a corner of the billet which is thereby rotated about its longitudinal axis to present a different side to the grinding-wheel assembly. The car is also formed at the rear of the fixture 38 with a compartment 56 which serves as a storage compartment for the ground billets. The storage table 100, Fig. 1, consists of a frame 102 supporting rails 108, Fig. 10, on which the fence 110 is slidable, movement being effected by a motor 116 and chain drive to a shaft 120 having sprockets 122 around which, and sprockets 124 on a shaft at the other end of the table, chains 126 are entrained having their ends connected to the fence 110. Some of the rails are shortened to provide recesses for the clamp arms 84 of the table 38 when the car is positioned adjacent the table 100. In an alternative embodiment, the car has a conveyer having rollers 174, Fig. 13, on which a ground billet is deposited upon rotation of the table 158, guide bars 182, which overlap one edge of the conveyer and are pivoted to the table 158, supporting the billet in its movement from the table to the conveyer. The conveyer can be raised about a pivot shaft 126 at one end of the conveyer by an hydraulic device 188 so that the ground billet is discharged at the side of the car. At the rear of the conveyer is a support means for a circular billet, the means consisting of a plurality of discs 200 mounted on a shaft 196. A second shaft 202 having discs 206 is mounted parallel to the first and driven from a motor 214 to rotate a billet supported on the discs for presenting different surfaces of the billet to the grinding-wheel.