Method of manufacturing a torque sensor

Details Method of manufacturing a torque sensor Method of manufacturing a torque sensor

1988-10-20

1990-03-20

Echols, P. W.

Metal working

Method of mechanical manufacture

Electrical device making

29458, 2281736, 228208, 228212, H01F 706

Patent

active

049089323

ABSTRACT:
A torque sensor comprising a magnetic member whose magnetostrictive characteristics vary with the amount of torque applied thereto and coils for detecting magnetostrictive variation disposed opposite the magnetic member, and a method of manufacturing the same. The torque sensor is constituted as an independent unit separate from the shaft whose torque is to be measured. The independent unit consists of a cylindrical member having the magnetic member attached thereto and an enclosure member which is provided with the coils and is mounted so as to cover the cylindrical member and be rotatable about the same axis as the cylindrical member. The method of manufacturing the torque member comprises the steps of first copper plating and then solder plating a torque transmission member and a magnetic member destined to be attached to the outer circumference of the torque transmission member, wrapping the magnetic member on the torque transmission member, and solder-bonding the torque transmission member and the magnetic member by heating them while uniform pressure is being applied to the entirety of the wrapped region.

REFERENCES:
patent: 2392293 (1946-01-01), Ruge
patent: 2566566 (1951-09-01), Howes
patent: 4616512 (1986-10-01), Himmelstein

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