Precision cutter for non-circular gear

Abstract

The invention discloses a precision cutter for a non-circular gear. The precision cutter comprises a box body, wherein a bottom plate, a middle partition, a table plate, a guide column and a non-circular sun gear fixed to the bottom plate; a planetary frame is supported on the box body through a bearing, serves as power input of a device, and is connected with a planetary gear shaft through a bearing; a non-circular planetary gear is arranged at one end of the planetary gear shaft and meshed with the non-circular sun gear fixed to the box body; a cylindrical planetary gear is arranged at the other end of the planetary gear shaft and meshed with a non-circular output gear on an output shaft. Due to the adoption of an externally meshed non-circular gear-cylindrical gear differential gear train combined structure, the indexing motion is synthesized by a planetary gear and the planetary frame, and good dynamic characteristics and relatively large indexing number are achieved; a mode of bolt positioning of an end cam is used and a hole is matched with a shaft, so that the precision is guaranteed, the positioning precision is high, the cost is low, the positioning action is smooth and stable, and the influence of gear surface machining precision of the non-circular gear is avoided; an input shaft and an output flange are coaxially arranged in space, and the transmission forms of parallel axes, crossed axes and the like in space also can be realized by adding transmission modes, so that the forms are flexible and the application range is wide.

Description

technical field [0001] The invention relates to a mechanical transmission device, in particular to a non-circular gear precision divider. Background technique [0002] Divider is also known as intermittent mechanism or stepping mechanism, also known as indexing device, which converts continuous input motion into intermittent output motion to realize functions such as indexing, feeding, indexing, and positioning. Due to the advantages of simplicity, strong bearing capacity, accurate movement, high rigidity, and fast response, intermittent mechanisms are still widely used in industries such as light textiles, electromechanical, national defense, mining, and metallurgy even in today's highly developed numerical control technology. application. [0003] The electronic splitting device uses a stepping motor or a servo motor to directly drive the rollers to make them move intermittently, but it has many disadvantages, such as complicated control, poor motion performance at high s...

AI Technical Summary

Problems solved by technology

The indexing device of the groove wheel mechanism and the indexing device of the incomplete gear mechanism have the characteristics of simple design and easy processing, but the dynamic performance is not good, the precision is low, and it cannot be used in high-speed and heavy-duty occasions; the cam-type indexing device has good power It is widely used at present, but it is difficult to process, easy to wear, high cost, and cannot achieve a large number of divisions; the more important indexing device in the form of a cam indexing mechanism, if it is to be made into a precision type (the indexing accuracy is 10s or less), it is necessary to ensure excellent surface processing accuracy, which has high requirements for multi-axis CNC machine tools, resulting in extremely high price and cost

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