公开(公告)号：US6134786A

公开(公告)日：2000-10-24

申请号：US240341

申请日：1999-01-29

Applicant: Scott D. Graupner ,  John Engquist ,  Steven T. Haye

Inventor： Scott D. Graupner ,  John Engquist ,  Steven T. Haye

IPC: B22F5/08 ,  B23P15/14

CPC classification number: B22F5/08 ,  B22F2003/247 ,  Y10T29/49476 ,  Y10T409/101749

Abstract: Gears, particularly spur gears, are produced by powder metal techniques with minimal lead line error and eccentricity, which gears are preformed from powder metal, sintered, hardened and thereafter have their involute surfaces regenerated by a hard hob with a negative rake on the hob teeth to provide gears having aligned involute surfaces between adjacent gear teeth and, between each gear tooth and the gear center line.

Abstract translation: 齿轮，特别是正齿轮通过粉末金属技术生产，引线误差和偏心率最小，这些齿轮由粉末金属预先形成，烧结，硬化，此后，其渐开线表面由滚刀上具有负耙子的硬滚刀再生 以在相邻齿轮齿之间以及在每个齿轮齿和齿轮中心线之间提供具有对准的渐开线表面的齿轮。

公开(公告)号：US1655860A

公开(公告)日：1928-01-10

申请号：US8354326

申请日：1926-01-25

Applicant: JOHN ENGQUIST

Inventor： JOHN ENGQUIST

IPC: A47C7/72

CPC classification number: A47C7/72