Forming mechanism for water pump shell machining

The invention provides a forming mechanism for water pump shell machining, and relates to the field of machining. Four supporting legs are fixedly installed on the lower end face of the workbench. A transverse rail groove is formed in the middle of the upper end face of the workbench, and a first containing frame is fixedly installed behind the upper end face of the workbench. According to the punching device, the two lower die plates are installed on the upper end face of the base plate, when the base plate moves to the rightmost position of the transverse rail groove, the hydraulic cylinder conducts punching operation on a workpiece on the surface of the lower die plate on the left side, at the moment, a worker can complete the working procedures of material taking and material changing on the lower die plate on the right side, and therefore the working efficiency is improved; besides, through the arrangement that the control switch is sleeved with the sleeve box, the worker must pull the pull plate upwards