GB779977A - Improvements in or relating to dimensional characteristic gauging device - Google Patents

Abstract

779,977. Gauging co-operating parts of ball-bearing races. SHEFFIELD CORPORATION. Nov. 15, 1955 [Nov. 19, 1954], No. 32605/55. Class 106 (2). Gauging means for measuring the dimensional characteristics of the co-operating pairs of races of a double row ball-bearing comprises a base 10, Fig. 3, supporting means 14 carried from the base for engagement with one raceway of an outer race 11 and a co-operating raceway of an inner race 12 to locate the engaged raceways with respect to one another in gauging position, a first gauging component 16 carried from the base for engaging the other raceway of the outer race, a second gauging component 19 carried from the base for engaging the other raceway of the inner race and gauging means co-operating between the first and second gauging components responsive to their relative positions when in engagement with their respective raceways. The locating contacts on the supporting means 14 and the gauging contacts on the component 16 for engaging the outer raceways comprise three balls 31 and three balls 25 held between the raceways and members 26 and retained when out of locating and gauging contact by spring pressed rods 32 and 27 respectively. The members 26 have inclined surfaces such that the balls engage the races at the nominal contact angles. The locating contacts on the supporting means 14 and the gauging contacts on the component 19 for engaging the inner raceways comprise three balls 50 and three balls 38 similarly retained by spring loaded rods 48, 41 and each mounted on intermeshing fingers 47, 35 three of which are formed integrally with each of the members 14, 19 respectively. Inclined surfaces 49, 40 enable the balls 50, 38 to engage the raceways at the nominal contact angle. The gauging components 16, 19 are moved into gauging position after loading the apparatus with the races 11, 12 by means of air-operated pistons 20, 22 whereupon the supporting member 14 locates the outward raceway of an inner race and the co-operating inward raceway of an outer race in accordance with their dimensional characteristics relative to the nominal size ball contacts employed. The final characteristic is then determined by the relative position of the two gauging components 16, 19 with their nominal-sized ball contacts 25, 38 in correct seating engagement with the other two raceways. This relative position is measured by the leakage at an orifice 62 on one component 16 which faces an orifice controlling surface on the end of a spring-loaded rod 66 running through the member 14 and engaged by a rod 65 in the other gauging component 19. The leakage gauge may be calibrated in terms of appropriate ball size for use with the races being gauged.