Strain transducers

Details Strain transducers Strain transducers

1984-05-18

1986-12-16

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Assembling or joining

7386225, B23P 1902, B25B 2314

Patent

active

046285830

ABSTRACT:
A strain transducer is adapted to measure strain at a chosen depth below the surface of a workpiece, such as at the neutral axis of a draft bar. The transducer has a hollow cylindrical plug (6) projecting from a co-axial shoulder (7) of slightly larger diameter, the distal end of the plug being force fitted with a disc-like diaphragm (9) on which strain gauges (10) are mounted. These are on the inside face, and connections (11) extend up inside the plug to encapsulated electronic circuitry at the proximal end. The workpiece is bored (3) to an extent greater than the chosen depth and then counterbored (4) to match the plug and shoulder, and the transducer is inserted with an interference fit.

REFERENCES:
patent: 3447367 (1969-06-01), Taylor
patent: 3473375 (1969-10-01), Jenkins
patent: 3742760 (1973-07-01), Kato
patent: 4342233 (1982-08-01), Edmundson et al.
patent: 4412456 (1983-11-01), Wilhelm et al.

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