Positioning hole machining clamp and machining method of combined chain wheel

The invention provides a positioning hole machining clamp and method for a combined chain wheel, and belongs to the technical field of machining of combined chain wheels. The problem of low precision in the prior art is solved. The positioning hole machining clamp of the combined chain wheel comprises a mounting seat, a fixing device and an inner hole limiting device, the fixing device and the inner hole limiting device are arranged on the mounting seat, pressing devices corresponding to rims in number are arranged on the mounting seat, the rims surround the outer side of the inner hole limiting device and are pressed and fixed by the pressing devices, a receding cavity is formed in the mounting seat, and the receding cavity corresponds to the positioning hole in position. The positioning hole machining clamp has the advantage of higher precision. 本发明提供了一种组合式链轮的定位孔加工夹具及加工方法，属于组合式链轮加工技术领域。它解决了现有技术精度不高等问题。本过组合式链轮的定位孔加工夹具包括安装座以及设置于安装座上的固定装置和内孔限位装置，安装座上设置有与轮缘数量对应的压紧装置，轮缘环绕于内孔限位装置的外侧，且轮缘被压紧装置紧压固定，安装座上开设有让位腔，让位腔与定位