Polishing device for gear machining based on hydraulic transmission

The invention provides a polishing device for gear machining based on hydraulic transmission, and relates to the technical field of gear machining. The polishing device for the gear machining based onthe hydraulic transmission comprises a cylinder body, wherein a limiting frame is fixedly installed on the inner side of the cylinder body; threaded rods are rotatably connected to the inner sides ofthe cylinder body and the limiting frame; gears are fixedly installed on the peripheries of the threaded rods; sliding blocks are slidably connected to the interior of the limiting frame; springs arefixedly connected to the two sides of each sliding block; and a friction plate is rotatably connected to one end, close to the center of the cylinder body, of each sliding block. According to the polishing device for the gear machining based on the hydraulic transmission, the synchronous polishing of teeth of a workpiece is realized, the polishing efficiency is improved, the difference of the teeth caused by the alternate