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JPH0839162A Expired / Lapsed JP ⏱️ 0.0 years remaining

Pressing method for external gear and internal gear for gear pump

Assignee: OOHASHI TEKUNIKA KK
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Filing: 1994-08-01
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Granted: —
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Expires: 2014-08-01
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Abstract

Abstract Translated from Japanese (57)【要約】 【目的】 歯車ポンプ用の外歯歯車と内歯歯車のプレス 加工方法を提供する。 【構成】 第4ステージ(D)では、歯形形状31が打 ち抜かれた歯形形状穴36の周囲に、トロコイド曲線よ りなる内歯歯車2の歯形形状41を打ち抜く。該歯形形 状41は、外歯歯車が転動してポンプ作用をなすポンプ 室の形状となるものである。従って、歯形形状穴36の 1個の歯形36aと、打ち抜かれる歯形形状41の1個 の歯形41aとが、材料Mの順送方向の中心線CL上で 内接状に整合するように、歯形雌ダイス42が下型10 に配設されている。第5ステージ(E)では、歯形形状 穴45の周囲に該歯形形状穴45と同心の外周円を打ち 抜いて内歯歯車2を形成する。 (57) [Abstract] [Purpose] To provide a method for pressing an external gear and an internal gear for a gear pump. [Structure] In the fourth stage (D), the tooth profile 41 of the internal gear 2 having a trochoidal curve is punched around the tooth profile hole 36 in which the tooth profile 31 is punched. The tooth profile 41 has a shape of a pump chamber in which an external gear rolls to perform a pumping action. Therefore, one tooth profile 36a of the tooth profile hole 36 and one tooth profile 41a of the punched tooth profile 41 are inscribed so as to be inscribed on the center line CL of the material M in the progressive direction. Female die 42 is lower die 10 It is arranged in. In the fifth stage (E), an outer peripheral circle concentric with the tooth profile hole 45 is punched out around the tooth profile hole 45 to form the internal gear 2.

Inventors

  • 👤 Michihiro Yokoyama
  • 👤 道弘 横山

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-08 18:23
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/082; F04C2/084; F04C2/10; F04C2230/00; F04C2230/10

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