Making of a bevel gear
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 27, 1986
Grant Date -
N/A
app pub date -
Jul 3, 1980
filing date -
Jul 5, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A bevel gear is made by means of a die, a punch, and two concentrical counterpunches, one having a particularly contoured extension. A cylindrical blank, having a diameter not larger than the smallest bevel gear root circle, is inserted in the die; a portion is held by one counterpunch but reverse-extruded in part into the gap between that counterpunch and the advancing punch. A portion of the blank inserted into the interior of the die flows concurrently radially into the small-diameter portion of the die cavity. Subsequently, the reverse-extruded, tubular portion is forced back in parts by the second counterpunch, acting in the gap, to fill the large-diameter portion of the cavity. A tubular shaft extension may remain on the gear.
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Cited Art Landscape
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