Selection of Lubrication Shafts With the increase of rolling mill load and the improvement of working rate, the original 220# medium-duty industrial gear oil can not meet the requirements of gear lubrication. The oil film of the tooth surface boundary layer is thinner, pitting, adhesive wear is becoming more and more serious, and micro-cracking And broken teeth continue to occur. After calculation, the 320# heavy-duty industrial gear oil is used to improve the thickness and strength of the lubricating oil film, reduce the pitting and gluing of the tooth surface, improve the lubrication condition of the tooth, and the tooth surface contact is obviously improved. The service life is greatly extended. The eccentric sleeve is used to adjust the center distance FJ350 combined reducer high-speed human-shaped gears. The deviation between the design center distance and the actual center distance is 0.6mm. During the installation and use, the backlash of the teeth is found to be small, and the gears interfere with each other and affect the transmission. The smoothness and the formation of the lubricating oil film, the bearing bushing is changed to the eccentric bushing, so that the actual center distance is the same as the design center distance, thus ensuring the correct installation of the gear, improving the smoothness of the transmission, and improving the gear. Lubrication conditions.
Improvement of axial positioning The axial positioning of the entire box-shaped herringbone gear is at one end of the high-speed shaft, making it extremely difficult to pay the alignment of the herringbone gear on the transition shaft and the low-speed shaft. The herringbone gear is unidirectionally biased to make the gear The axial force increases, the gear is easy to break, and the bearing is easily damaged. For this purpose, the axial positioning point is changed from the high speed shaft to the light shaft end of the transition shaft. In this way, the high and low speed gears are all around, and the gears are freely centered to correct the axial force, which improves the comprehensive mechanical performance of the combined reducer. Change the current gear assembly method The original workshop uses large and small gears to be assembled by coke flame heating, so that the gears are over-fired and unevenly heated, resulting in changes in heat treatment performance and geometrical dimensions. Especially for alloy steel gears, the consequences are even more serious. Now it is changed to the electric furnace heating and heating assembly method. The heating temperature is required to meet the interference requirement of the assembly size. The heating temperature is controlled by the electric furnace to be less than 200 °C, which ensures the metallographic structure of the gear and improves the assembly quality.