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Bevel gear hot-forging apparatus

  • US 5,946,963 A
  • Filed: 07/10/1998
  • Issued: 09/07/1999
  • Est. Priority Date: 11/11/1996
  • Status: Expired due to Fees
First Claim
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1. A bevel gear hot-forging apparatus in which a material is forged under a condition of applied heat at a fixed temperature, for forming a bevel gear (72) having inclined gear teeth, comprising:

  • a first die (14) which accommodates therein a material (W) to be forged;

    a second die (18) which is pressed under an applied force against said first die (14) by force applying means (60) for forming gear teeth in said material (W);

    a driven gear (40) integrally attached to said second die (18);

    a support frame (30,

         38) for rotatably supporting said second die (18);

    a drive gear (42a-42d) enmeshed with said driven gear (40) and supported by said support frame (30);

    a screw (44a-44d) threadedly engaged with said drive gear (42a-42d) and supported by said support frame (30) while limiting rotation thereof, and having a projecting force applied thereto with respect to said first die (14) through a resilient member (54a-54d),wherein, at least when said second die (18) is displaced so as to be spaced from said first die (14), said driven gear (40) is rotated by means of said drive gear (42a-42d) threadedly engaged with said screw (44a-44d), and said second die (18) is rotated in correspondence with the inclination of said gear teeth.

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