Cam mechanism for translation of circular motion into reciprocal motion
AssigneesDelta Kogyo Co., Ltd., Shin-Daiwa Kogyo Co., Ltd.
InventorsYouso Akehi, Fumio Nomura
Life of this patent
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Abstract
A cam mechanism for use in a mowing machine. The cam mechanism is comprised of a spur gear and protruding eccentric cams from the top and bottom surfaces of the spur gear. The cam mechanism is formed from a half blanking press process. The eccentric cams are symmetrically formed around a shaft hole located in the center of the spur gear. Members with a hole equaling that of the eccentric cam and shaft hole point symmetry are then fitted onto the eccentric cam. The members are then capable of reciprocation with a phase differential of 180 degrees of each other. The concave portion of the eccentric cam permits lubricants to be filled in the space facilitating the smooth operation of the cam mechanism.
Claims5
A cam mechanism comprising:
- a metal gear, having a centrally located shaft hole, said metal gear being fit onto a shaft and continuously rotatable thereabout and about a rotational axis;
- and
- a pair of eccentric cams integrally formed with said metal gear, said pair of eccentric cams being formed by performing half blanking press processing,
- wherein said pair of integrally formed eccentric cams comprises a first eccentric cam protecting from a top surface and a second eccentric cam projecting from a bottom surface of said metal gear, each of said first and second cams being completely circumscribed by cam surfaces, and
- wherein said first and second eccentric cams are disposed on opposite sides of a plane passing through said shaft hole parallel to said rotational axis without intersecting said plane.
Dependencies are inferred from the claim text.