High-precision planetary reducer input shaft structure

Abstract

The invention relates to a high-precision planetary reducer input shaft structure which comprises a shaft body, a driving gear, connecting keys, two protective sleeves and connecting flanges. The shaft body is of a cylindrical structure, and is divided into a connection section, a bearing section and a driving section in sequence from front to back in the axis direction of the shaft body; the driving gear and the protective sleeves are wrapped outside the driving section of the shaft body; the two protective sleeves are distributed on two sides of the driving gear; the connecting flanges are arranged on the end surfaces, propped against the side surface of the driving gear, of the protective sleeves; at least two connecting key slots with rectangular cross sections are uniformly distributed in the contact surfaces of the driving sections of the shaft body and the driving gear; and the connecting keys are embedded in the connecting key slots. The high-precision planetary reducer input shaft structure is compact, and high in operation degree of automation and operation precision, and can effectively meet the requirement for press-in processing of spiral retaining rings of planetary reducers of different structure types, thereby being greatly improved in universality and improving the working efficiency and precision of the press-in operation of the spiral retaining rings.

Description

technical field [0001] The invention relates to an input shaft structure of a high-precision planetary reducer, belonging to the technical field of planetary reducers. Background technique [0002] At present, the existing planetary reducer mainly includes a ring gear casing, an input shaft, a sun gear keyed to the input shaft, a planetary gear meshed with the sun gear, and an output shaft for installing the planetary gear. Currently, interference fit and key connection are generally used between the input shaft and the sun gear. If the interference fit is used for a long time, slippage is likely to occur. Therefore, the key connection is used more frequently. When connecting the sun gear and the input shaft, the structural strength of the single-key connection is relatively weak, which cannot effectively meet the needs of large-load drive operation. When using multi-key connections, although the carrying capacity can be effectively improved, on the one hand On the other ha...

AI Technical Summary

Problems solved by technology

Currently, interference fit and key connection are generally used between the input shaft and the sun gear. If the interference fit is used for a long time, slippage is likely to occur. Therefore, the key connection is used more frequently. When connecting the sun gear and the input shaft, the structural strength of the single-key connection is relatively weak, which cannot effectively meet the needs of large-load drive operation. When using multi-key connections, although the carrying capacity can be effectively improved, on the one hand On the other hand, the connection key and the keyway will wear out during operation, and as the wear increases, it is easy to cause a decrease in running accuracy and a decrease in the coaxiality of the input shaft. It even caused the input shaft and sun gear to be scrapped due to structural damage

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