GB637526A - Machines for grinding and polishing non-spherical and conical surfaces - Google Patents

Abstract

637,526. Grinding and polishing. CLAVE, S., and CLAVE, M. June 30, 1947, No. 17160. Convention date, Oct. 13, 1942. [Class 60] Relates to a machine for grinding and polishing cylindrical, toric, &c. surfaces and comprising a tool having a backing die 22 which has an active surface of cylindrical shape and a cross-section such that the outer contour of a constantly-taut abrasive band 9 associated therewith forms the contour desired on the workpiece 1, said band being relatively displaced with respect to the die while remaining applied thereon by guide means 23. According to the invention the machine further comprises a work-support 1<SP>1</SP> on a bracket A verticallyadjustable on the frame B, a slide-block 36 movable on the frame between positions in which the band 9 engages the workpiece and is clear thereof, and means for reciprocating the band longitudinally and laterally. The slideblock 36 is moved by a handle 37 and carries an electric motor 28 which reciprocates a slide 32 carrying the band 9 and which also oscillates drums 24 carrying the band 9, the oscillations being controlled by stops on the drums. The workpiece 1 is carried on a spindle 2 which is adjusted vertically by a rack 8 and handle 7 and is either rotated by a motor 3 or locked by a pin 11. In a modification, Fig. 3, the workpiece 1 is rotated about a horizontal axis by a motor 17 or, alternatively, may be oscillated about that axis. The rollers 23 are adjustable vertically by screws 30 but, in the case of workpieces with concave faces, the rollers are omitted. French Specification 835,191 is referred to.