Process for the manufacture of a gear wheel in an internal greared
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United States of America Patent
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Nov 1, 1994
Grant Date -
N/A
app pub date -
Apr 28, 1993
filing date -
May 21, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a process for the manufacture of a gear wheel in an internal geared wheel pump, which wheel consist of two half-wheels (2A, 2B), which are respectively equipped with overflow ducts (3) constructed as half cavities (4A, 4B), into which balls can be inserted, the half-wheels (3A, 3B) are joined so that the complete overflow ducts (3) are formed from the half-cavities (4A, 4B) and the teeth (5) of the gear wheel (1) lie over one another in alignment. The insertion of any valve balls into the half-cavities (4A or 4B) of a half-wheel (2A or 2B) is performed before a welding operation and the half-wheels (2A, 2B) undergo a capacitor discharge welding process.
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