公开(公告)号：US6129793A

公开(公告)日：2000-10-10

申请号：US909453

申请日：1997-08-11

申请人： Jie Tan ,  Terrell W. Hansen

发明人： Jie Tan ,  Terrell W. Hansen

IPC分类号： B21K1/30 ,  B21K5/20 ,  B23K9/00 ,  B23P15/14 ,  C21D9/32 ,  F16H1/12

CPC分类号： B21K5/20 ,  B21K1/30 ,  B23H7/06 ,  B23H9/003 ,  B23P15/14 ,  C21D9/32 ,  B23K9/00 ,  F16H1/12 ,  F16H55/0813 ,  Y10T409/100318

摘要： A face-gear forging die which can be used to near-net forge face gears is disclosed. The face-gear forging die is constructed from a blank, and is cut to specification using a wire electrical discharge machining (EDM) process. The wire electrical discharge machining process is computer controlled, according to pre-specified instructions. Accordingly, a variety of different-shaped face-gear forging die may be constructed by merely changing the specification's input to the wire Electric Discharge Machining apparatus. The wire Electric Discharge Machining process can also be used to cut the face gear tooth directly, to thereby circumvent the forging procedure. The complex, curved surfaces of the face gear teeth are mathematically approximated with a ruled surface, and the mathematical approximation is input to the wire Electric Discharge Machining apparatus for subsequent execution and forming of the die.

摘要翻译： 公开了一种可用于近网锻造面齿轮的面齿轮锻造模具。 面齿轮锻造模具由坯料构成，并使用电火花加工（EDM）工艺切割成规格。 电线放电加工过程由电脑控制，按照预先规定的说明进行。 因此，可以通过仅仅改变规格对线放电加工装置的输入来构造各种不同形状的面齿轮锻造模具。 电线放电加工工艺也可以直接切割齿轮齿，从而避免锻造过程。 面齿轮齿的复杂弯曲表面在数学上用规格表面近似，并且数学近似被输入到电线放电加工设备，用于随后的模具的执行和成形。

公开(公告)号：US07267300B2

公开(公告)日：2007-09-11

申请号：US11065855

申请日：2005-02-25

申请人： Gregory F. Heath ,  Ronald E. Gilbert ,  Terrell W. Hansen ,  Stephen C. Slaughter

发明人： Gregory F. Heath ,  Ronald E. Gilbert ,  Terrell W. Hansen ,  Stephen C. Slaughter

IPC分类号： B64C15/02

CPC分类号： B64D35/04 ,  B64C15/14 ,  B64C29/0025 ,  F16H1/222

摘要： Aircraft comprising an airframe having a forward end, an aft end opposite the forward end, a top extending between the forward end and the aft end, and a bottom opposite the top side. The aircraft further includes a power plant mounted on the airframe. In addition, the aircraft includes at least two propellers rotatably mounted on the airframe and powered by the power plant for moving the aircraft in a generally forward direction during operation of the propellers. Also, the aircraft includes at least two counter-rotatable fan sets mounted on the airframe and powered by the power plant for providing upward lift to the aircraft during operation of the fan sets.

摘要翻译： 飞机包括具有前端，与前端相对的后端的机身，在前端和后端之间延伸的顶部和与顶侧相对的底部。 飞机还包括安装在机身上的发电厂。 此外，该飞行器包括至少两个可旋转地安装在机身上的推进器，并由动力装置供电，用于在螺旋桨操作期间沿大致向前的方向移动飞行器。 此外，飞行器包括安装在机身上并由发电厂供电的至少两个可逆旋转的风扇组，用于在风扇组的运行期间向飞机提供向上升力。