公开(公告)号：US5778727A

公开(公告)日：1998-07-14

申请号：US693628

申请日：1996-08-08

申请人： Craig Allen Richardson ,  James C. Walters ,  Jerry Lee Krafka ,  Daniel J. Goodman

发明人： Craig Allen Richardson ,  James C. Walters ,  Jerry Lee Krafka ,  Daniel J. Goodman

IPC分类号： A01D34/30 ,  F16H23/08 ,  F16H23/04

CPC分类号： A01D34/30 ,  F16H23/08 ,  Y10T74/18336

摘要： A wobble drive for imparting reciprocating motion to a sickle bar includes a wobble drive shaft rotatable about a first axis and having a cylindrical wobble section formed about an axis making an angle of about 14.5.degree. to the first axis. A toroidal wobble shaft bearing housing is mounted on the wobble section by a set of wobble bearings having their outer races pressed into the bearing housing. An output yoke is coupled to the wobble shaft bearing housing for transmitting the oscillatory motion of the housing, caused by rotation of the drive shaft, to a swing arm fixed to an end of a shaft portion of the yoke. The coupling of the yoke to the wobble bearing housing is accomplished by a pair of headed spindle pins inserted, from the inside out, through pin bores provided at diametrically opposite locations in the wobble shaft bearing housing, and into respective yoke bearings mounted in the ends of a pair of yoke limbs that are joined to the yoke shaft portion. The heads of the spindle pins are respectively received in counterbored sections at the radially inner ends of the pin bores and these counterbores are blocked by outer races of the set of wobble bearings carried by the wobble bearing housing. The pins are each stepped to form first and second sections of different diameters with the radially inner section being larger than the radially outer section and sized for an interference fit with the bearing housing and with the radially outer sections being longer than the pin bores so as to permit the pins to be freely manually inserted through the pin bores and partially into the pin bearings carried by the yoke limbs, whereby the bearing housing and output yoke may be properly aligned one with the other prior to the pins being mechanically pressed into the pin bores.

摘要翻译： 用于向镰刀杆施加往复运动的摆动驱动器包括绕第一轴线旋转的摆动驱动轴，并且具有围绕与第一轴线成约14.5°角的轴线形成的圆柱形摆动部分。 环形摆动轴轴承座通过一组摆动轴承安装在摆动部分上，摆动轴承的外圈压入轴承座。 输出轭联接到摆动轴轴承壳体，用于将由驱动轴的旋转引起的壳体的振荡运动传递到固定到轭的轴部的端部的摆臂。 磁轭与摆动轴承座的联接是通过一对主轴销钉实现的，这些主轴销从内向外穿过设置在摆轴轴承壳体的径向相对位置处的销孔，并安装在安装在摆动轴承壳体的相应磁轭轴承中 连接到轭轴部分的一对轭臂。 主轴销的头部分别容纳在销孔的径向内端的沉入部分中，并且这些沉头被摆动轴承壳体承载的摆动轴承组的外圈阻挡。 每个销都是阶梯形的，以形成不同直径的第一和第二部分，其中径向内部部分大于径向外部部分，并且其尺寸用于与轴承壳体的过盈配合，并且径向外部部分比销孔更长，以便 以允许销自由地通过销孔手动插入，并且部分地插入由轭形臂支承的销轴承中，由此在销被机械地压入销之前，轴承壳体和输出轭可以彼此适当地对准 孔