GB1318631A - Method of making grooves on surfaces of an article apparatus therefor and article made by said method - Google Patents

Abstract

1318631 Rolling; making grooved articles LENINGRADSKY INSTITUT TOCHNOI MEKHANIKI I OPTIKI 22 June 1970 30116/70 Headings B3A and B3M [Also in Division B6] In a method and apparatus for making grooves in the surface of an article a spring-loaded spherical member, either a ball or a spherical diamond member soldered to a metal body, is pressed into the surface of the article and the member and article are moved to produce the desired pattern on the surface. The articles may be cylinder liners, pistons, sliding or rolling contact bearings, rings of spinning machines, gauge blocks or articles requiring a decorative finish such as reflectors for heating appliances, fountain pen caps, vessels or articles of jewellery. In one embodiment for grooving the outer cylindrical surface of a body of revolution the body 2 is rotated about its axis A-A, Fig. 27 and the spherical member 1 is mounted on a holder 6, spring-loaded by a spring 16. The holder is slidable within a sleeve 12 by means of a bushing 7 and driven by a motor 11 via an eccentric. The assembly supporting the spring-loaded spherical member is mounted on a base 5 which is progressively moved in a direction S parallel to the axis A-A. The combined motions produce a series of sinusoidal grooves which may interconnect or be separate from each other. By mounting a body of rotation so that its end face is abutting the member 1 and direction S is parallel to the radius of the body a pattern of grooves is produced on the end face, Fig. 29 (not shown). A hollow body of revolution may be patterned by inserting the member 1 on an extended holder 6 into the bore of the body, Fig. 28 (not shown). A rod or pipe of long length may be grooved by passing it in a direction S, Fig. 31, and rotating it in a direction B by means of rollers 47 through a holder 6b in which are mounted members 1 on springs 16. The holder is reciprocated in a direction N. A flat surface is grooved, Fig. 30, by passsing a body 4 rectilinearly past a member 1 mounted on a holder 29 which is reciprocated in a direction N on a base 31 which is simultaneously rotated about an axis P-P normal to the surface. The member is moved by an eccentric 44 driven via shaft 38 and gearing 39, 40, 41 by a motor 36 and the base 31 is rotated via a hollow shaft 33 and gearing 34, 35, 37 by motor 36.