APPARATUS FOR TESTING OUT-OF-ROUNDNESS OF SLEEVES Russian patent published in 2000 - IPC

FIELD: machine engineering, particularly, measuring technique. SUBSTANCE: apparatus includes display unit 1 and housing 2 with unit for taking off and transmitting information. Small piston 3 is spring-loaded relative to cylinder 4 by means of spring 5. One surface of small piston 3 has direct contact with information display unit 1, its other surface is rigidly joined with one end of multistrand twisted steel wire 6. Wire 6 passes along roller 7 and its other end is rigidly joined with small piston 8 spring-loaded relative to cylinder 9 by means of spring 10. Second side of small piston 8 is connected with probe 11 contacting with wall of sleeve 12. Housing 2 of apparatus is centered relative to lengthwise axis of sleeve 12 by means of bearing assembly 13 placed in washer 14. Small diameter of washer is equal to inner diameter of sleeve 12. EFFECT: possibility for measuring radial and axial deviations of sleeve size with lowered measurement error values, simplified design. 2 dwg