Mechanical arm end executor

The invention relates to a mechanical arm end executor, and belongs to the technical field of industrial automation. The problems are solved that existing end executors cannot accurately grasp and position circular workpieces or simultaneously rotate the circular workpieces. The mechanical arm end executor comprises a gas claw and gas claw connecting plates arranged at the two sides of the gas claw; the end portions of the gas claw connecting plates are provided with rolling wheel structures, and the rolling wheel structures are symmetrically arranged about the gas claw; each rolling wheel structure comprises a rolling wheel bracket and two rolling wheel assemblies, and the rolling wheel assemblies are arranged on each rolling wheel bracket in parallel, and used for clamping the circular workpieces and conducting centering positioning on the circular workpieces. Each rolling wheel assembly comprises a rolling wheel and a connecting rod, each rolling wheel is fixedly connected to the end portion of the corresp