Valve cover machining jig

The utility model discloses a valve cover machining jig which is used for machining a valve cover and comprises a jig base, a rotating air cylinder, a rotating support, two rotating discs, a jig support and at least two pressing assemblies. The machining jig is matched with machining of the valve deck, the valve deck can be fixed to the jig support through the pressing assembly, then the valve deck is rotated to the designated machining angle through the rotating air cylinder, different end faces of the valve deck are machined in sequence, the valve deck does not need to be installed and disassembled for many times, and therefore the machining efficiency is improved. The processing of the valve cover is simple, convenient and time-saving; moreover, only one machining jig is needed, different machining jigs do not need to be arranged when all the end faces are machined, and therefore the valve deck machining cost is low. 本实用新型公开了一种阀盖加工治具，所述加工治具用于加工阀盖，所述加工治具包括一治具底座，一旋转气缸一旋转支座，两个转盘，一治具支架以及至少两个压紧组件。采用本实用新型的加工治具配合