Five-axis linkage horizontal type helical tooth non-circular gear hobbing machine tool

Abstract

The invention provides a five-axis linkage horizontal type helical tooth non-circular gear hobbing machine tool. The five-axis linkage horizontal type helical tooth non-circular gear hobbing machine tool is characterized in that the machine tool comprises a base, the base is provided with a first supporting structure and a second supporting structure, the height of at least one of the first supporting structure and the second supporting structure can be adjusted, the first supporting structure is provided with a hob device used for machining non-circular gear blank into a helical tooth non-circular gear, the second supporting structure is provided with a rotary table, the rotary table is provided with a working device, and the non-circular gear blank is arranged on the working device. According to the five-axis linkage horizontal type helical tooth non-circular gear hobbing machine tool, by setting the included angle between the hob device and the working device which operate synchronously and by setting the vertical distance between the two devices when the machine tool rotates, the non-circular gear blank mounted on the working device can be cut into a helical gear, and the machine tool is high in machining efficiency and high in precision.

Description

technical field [0001] The invention relates to a hobbing gear processing machine tool, in particular to a five-axis linkage horizontal helical non-circular gear tooth processing machine tool. Background technique [0002] As a variable speed transmission mechanism, there are many types of non-circular gears and complex shapes, which will inevitably bring certain difficulties to manufacturing. At present, the more mature method is the straight tooth non-circular gear processing method, which mainly includes the following types: [0003] 1. Modeling method. This processing method ensures that the instantaneous linear velocity of each point on the pitch curve of the gear blank during the cutting process is equal under the condition that the tool rotates at a constant speed, so that the instantaneous angular velocity of the gear blank and the center of the gear blank and the non-circular roller The distance changes according to a certain rule. Using this method, the correspo...

AI Technical Summary

Problems solved by technology

In this case, it is usually on the universal equipment to process non-circular gears with approximate tooth cutting method, but the machining accuracy is not high and the tooth shape is not accurate

[0005] 3. Non-circular gears are processed on CNC machine tools, but due to the lack of efficient and accurate processing methods, the promotion and use of non-circular gears has been affected. At present, the main processing methods for straight non-circular gears include CNC gear shaping, CNC milling, and CNC gear cutting. Hobbing

[0006] 4. At present, wire cutting is the most widely used method for processing non-circular gears in China. This method is more suitable for small batch production of straight tooth non-circular gears. Single wire cutting is not suitable for processing helical non-circular gears.

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