Machining device for metal tank

The utility model relates to the field of metal tank body machining, in particular to a metal tank body machining device which comprises a workbench, a mounting disc is rotatably mounted at the position, close to the center, of the top of the workbench, a driving assembly for driving the mounting disc to rotate is arranged on the workbench, and at least two limiting assemblies are annularly distributed on the outer side wall of the mounting disc at equal intervals. Lifting assemblies are symmetrically arranged at the positions, located on the two sides of the installation disc, of the top of the workbench, the same top plate is fixedly installed at the tops of the lifting assemblies, and a polishing assembly and a cleaning assembly are symmetrically arranged at the positions, close to the two sides, of the bottom of the top plate. And the grinding quality and the grinding efficiency are improved. 本实用新型涉及金属罐体加工领域，具体涉及一种金属罐体的加工装置，包括工作台，工作台的顶部靠近中心位置处转动安装有安装盘，工作台上设置有驱动安装盘转动的驱动组件，安装盘的外侧壁上等间隔环形布设有至少两个限位组件，工作台的顶部位于安