Multi-directional grinding device with dust removal function for machining of mechanical parts

The invention discloses a multi-directional grinding device with a dust removal function for machining mechanical parts. The multi-directional grinding device comprises a workbench, and a fixing frame is mounted at the top end of the workbench. The main air cylinder controls the long wheel to ascend and descend, so that the grinding depth is selected, the main motor drives the long wheel to rotate, position selection and adjustment of the first grinding wheel or the second grinding wheel are completed, the first grinding wheel or the second grinding wheel can be adjusted and positioned at any angle, and multi-angle grinding is conducted on mechanical parts in the fixing base; a pushing structure is arranged to control a pushing air cylinder to work and stretch out and draw back to push a base body to move, so that a fixing base is driven to move, a limiting block installed at the bottom end of the base body can conduct limiting and guiding movement in a limiting groove formed in the top end of a workbench dur