Coupling for vibration testing

Details Coupling for vibration testing Coupling for vibration testing

1988-01-19

1988-10-11

Tokar, Michael J.

Measuring and testing

Vibration

Vibrator

403224, 384125, B06B 110

Patent

active

047762179

ABSTRACT:
A coupling for vibration testing comprises a pair of connecting links to be attached to a shaker head and to a driven fixture, respectively. Each of these has an axial passage through it and a convex spherical distal bearing surface. These bearing surfaces face each other. A center element has an axial passage through it and has opposite concave spherical bearing surfaces that face against the convex spherical bearing surfaces of the two connecting links. A low-friction coating or layer, i.e., fiber-reinforced PTFE, is applied to the convex bearing surfaces of the connecting links and provides a low-friction sliding surface against the mating surfaces of the center element. A preload bolt extends through the axial passages of the device and exerts a compressive axial preloading stress which exceeds the maximum vibrational force likely to be encountered.

REFERENCES:
Team Corporation, Hydrostatic Bearings Vibration Test Equipment, 1973.

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