Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1976-08-18
1978-08-29
Lanham, C. W.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
148 115R, 148 12R, 140 88, 29415, 72371, 72142, B21K 104, C21D 940, B23P 1700, B21H 112
Patent
active
041093615
ABSTRACT:
An elongated unhardened blank is passed between a first pair of rollers where it is conductively heated by supplying current to one of the rollers. Thereafter, the blank is further heated by induction and then passed between a second pair of rollers where it is shaped so as to impart thereto a predetermined cross-sectional configuration. The rollers of the second pair are profiled and the blank is maintained at an elevated temperature by supplying current to one of the rollers. After shaping, the blank is passed between a third pair of rollers. Current is again supplied to one of these rollers. The other roller is of a diameter corresponding to that desired for the finished annular articles and the blank is coiled about this roller. This latter roller is partially immersed in a quenching medium so that the blank is quenched and thereby hardened as it is being coiled. Coiling is continued until the number of convolutions corresponds to the number of annular articles which are to be produced. The thus-obtained coil is then subdivided by severing the same in such a manner that each convolution forms an annular article. The method and arrangement are well-suited for the production of wire races for anti-friction bearings.
REFERENCES:
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patent: 2542940 (1951-02-01), Pioch et al.
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patent: 2683922 (1954-07-01), Zion
patent: 3478402 (1969-11-01), Schmude et al.
patent: 3769671 (1973-11-01), Knapp
Hagen Albert
Kaiser Theodor
Pohler Heinz
Hoesch Werke Aktiengesellschaft
Lanham C. W.
Rising V. K.
Striker Michael J.
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