The working principle of the three-roll planetary rolling mill

The main train of the three-roll planetary rolling mill is divided into two parts: the rolling mill body and the transmission. The rolling mill body is composed of a slewing disk system, a central sleeve and a stand. One side of the turntable is equipped with a transmission gear, and three tapered rolls arranged at an angle of 120° are installed on the other side. The inclined roll axis and the rolling centerline form a rolling angle. In addition, each roll stand can be rotated at any angle within the adjustment angle range relative to the turntable, so that the roll shaft and the rolling centerline form a feed angle that intersects with each other in space. The transmission part is composed of main transmission and auxiliary transmission. The transmission process is as follows: (1) The main motor drives the turntable to rotate through the main drive shaft and a pair of spiral bevel gears. The three tapered rollers on the turntable revolve around the rolling piece at the same time. The planetary gear installed in the rotating disk rotates with the rotating disk, and the roller is driven to rotate around its own axis through the gear. (2) The auxiliary motor drives the intermediate sleeve, sun gear, and planetary gears through the auxiliary drive shaft and a pair of spiral bevel gears, and then transmits power to the tapered roller through the gear inside the roller seat to generate superimposed motion for adjustment The rotation speed of the roll.

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