A kind of ultrasonic vibration machining gear tooth surface topography machining and control method

Abstract

The invention discloses an ultrasonic vibration machining gear tooth surface appearance machining and control method. The method comprises the following steps that firstly, the value range of cuttingparameters of a tool is initially determined; some cutting depth and rotating speed within the value range of the cutting parameters are selected; cutting depth h and feed engagement fz are calculatedaccording to parameters of a flexible part and surface appearance required by a workpiece; and then the cutting depth h and the feed engagement fz are judged and adjusted, after requirements are met,machining is conducted according to the above cutting parameters, and in the machining process, ultrasonic vibration is applied to the tool through a machine tool system. According to the method, theflexible part is introduced, the interference of mode characteristics under the multi-degree of freedom of a machine tool can be effectively avoided, the cutting parameters are optimized, the surfaceappearance meeting the requirements of the workpiece can be obtained, burrs can be cut off through the ultrasonic vibration, and the smooth surface appearance is formed.

Description

technical field [0001] The invention relates to the field of gear machining, in particular to an ultrasonic vibration machining gear tooth surface profile machining and control method. Background technique [0002] At present, in the machining parts, the surface quality is an important indicator of the performance of the workpiece. In order to meet the use requirements of some important joint surfaces or relative sliding surfaces, the surface roughness, residual stress, hardness and other indicators of the workpiece are usually required. However, for the surface quality of high-performance gears with complex working conditions, the traditional surface quality requirements can no longer meet the requirements, and higher requirements are put forward for the tooth surface morphology of the workpiece. The formation of the friction and transfer layer has a decisive influence. Unsuitable tooth surface topography will seriously affect the performance of the workpiece surface, such...

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Problems solved by technology

However, for the surface quality of high-performance gears with complex working conditions, the traditional surface quality requirements can no longer meet the requirements, and higher requirements are put forward for the tooth surface morphology of the workpiece. The formation of the friction and transfer layer has a decisive influence. Unsuitable tooth surface topography will seriously affect the performance of the workpiece surface, such as figure 1 As shown, there will be burrs or residual heights in the contact between the cutting edge of the tool and the workpiece, making the surface of the workpiece form a non-smooth surface topography

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