Cycloid speed reducer

Abstract

The invention discloses a cycloid speed reducer, which comprises an input shaft, a cycloid wheel, a pin tooth shell, a cam shaft and an involute planet gear, wherein the cycloid wheel is arranged in the pin tooth shell; the input shaft is arranged on the middle part of the pin tooth shell and passes through the cycloid wheel; the cam shaft passes through the involute planet gear and the cycloid wheel; and an expansion sleeve is arranged at the joint of the cam shaft and the involute planet gear. In the cycloid speed reducer, the cam shaft and the involute planet gear are connected through the expansion sleeve to overcome the defect of high assembly precision of the conventional cycloid speed reducer, so the cycloid speed reducer of the invention is simple in assembly, and the manufacturing difficult and the manufacturing cost of the cycloid speed reducer can be effectively reduced.

Description

technical field [0001] The invention relates to the fields of numerical control turntable, turret and industrial robot manufacturing, in particular to a cycloid reducer used for industrial robots. Background technique [0002] As a supporting technology for advanced manufacturing and an emerging industry in an information society, industrial robots will play an increasingly important role in future production and social development. With the continuous improvement of the automation level of my country's industrial enterprises, the market for robotic automation lines will also become larger and larger, and will gradually become the main method of automated production lines. The reducer used by the robot requires small size, large transmission ratio, strong carrying capacity, high motion accuracy and small backlash, which is very important for improving the motion accuracy and dynamic characteristics of the robot. At present, in the cycloid reducer commonly used in the indust...

AI Technical Summary

Problems solved by technology

At present, in the cycloid reducer commonly used in the industry, the camshaft and the involute planetary gear are generally connected by a key, and the fixing effect is very good, but when the camshaft and the involute planetary gear are assembled, the accuracy The requirements are quite high, which greatly increases the manufacturing difficulty and manufacturing cost of the cycloidal reducer. For enterprises (especially small and medium-sized enterprises), it is also more difficult to realize automatic production.

In addition, in the existing cycloid reducer, the large bearings at both ends and the support bearings at both ends of the camshaft are non-standard bearings, which need to be customized by the manufacturer, which greatly increases the cost of the reducer; It needs to be pre-tightened at the same time, which has very high requirements on the manufacturing accuracy of the product and the overall assembly accuracy, and increases the difficulty of the automatic production of the enterprise.

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