Inner hole machining clamp of combined type chain wheel

The utility model provides an inner hole machining clamp of a combined type chain wheel, and belongs to the technical field of combined type chain wheel machining. The problems of low precision and the like in the prior art are solved. The wheel rim fixing device comprises a mounting seat and a positioning hole fixing device arranged on the mounting seat, fastening devices corresponding to the wheel rims in number are arranged on the mounting seat, the wheel rims are annularly arranged on the mounting seat and fixed by the fastening devices, an operation hole is formed in the mounting seat, and the operation hole and inner holes of the wheel rims do not interfere with each other. The utility model has the advantages of higher precision, more convenience in processing and the like. 本实用新型提供了一种组合式链轮的内孔加工夹具，属于组合式链轮加工技术领域。它解决了现有技术中的精度不高等问题。本实用新型包括安装座以及设置于安装座上的定位孔固定装置，安装座上设置有与轮缘数量对应的紧固装置，轮缘呈环形排列于安装座上，且轮缘被紧固装置固定，安装座上开设有操作孔，操作孔与轮缘的内孔互不干涉。本实用新型具有精度更加精确、加工更加方便等优点。