Turbine tenon groove ultrasonic assistance precise electrolysis grinding method

A processing method and electrolytic grinding technology, which is applied in the field of electrolytic grinding, can solve problems such as unstable processing process and loss of tool grinding wheel, and achieve the effect of clear method principle, stable processing process and low loss

CN110587047AActive Publication Date: 2019-12-20YANGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-12-20

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Abstract

The invention discloses a turbine tenon groove ultrasonic assistance precise electrolysis grinding method, and belongs to the technical field of electrolysis grinding. The method is to assist an ultrasonic vibration effect in the turbine disc tenon groove electrolysis grinding process; and under driving by ultrasonic vibration, when a tool grinding wheel is near a maximum machining gap, an electrochemical corrosion effect is used for accelerating formation of a passivation film on a tenon groove machining surface. When the ultrasonic vibration drives the tool grinding wheel to be near a minimum machining gap, a mechanical grinding effect is used for scraping off the passivation film on the tenon groove surface, and a new basal body material is exposed out. The coordinated synchronization of ultrasonic vibration signal parameters and electric signal parameters is controlled to guarantee continuous and alternate implementation of the electrochemical corrosion process and the mechanical grinding process to achieve a precise machining effect of a turbine disc tenon groove structure.
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Description

technical field

[0001] The invention belongs to the technical field of electrolytic grinding, and relates to an ultrasonic-assisted precision electrolytic grinding processing method of a turbine tenon-groove structure, in particular to an alternate composite effect that can realize an electrochemical corrosion process and a mechanical grinding process. Ultrasonic-assisted precision electrolytic grinding processing method to achieve low-cost and high-quality processing of turbine disk tenon and groove structure. Background technique

[0002] The turbine disk is one of the most severe and important hot-end components in the aerospace engine. It is the core part of the key component of the engine turbine, and its performance directly determines the overall performance of the engine. In the split turbine rotor, the working blades and the turbine disk are connected by a mortise joint structure. During the working process, the working blades and the disk are driven by high-tempera...

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing:

[0021] Such as Figure 1-3 As shown, the specific implementation process of a turbine tenon groove ultrasonic-assisted precision electrolytic grinding method is as follows:

[0022] The tool grinding wheel 14 is connected to the negative pole of the power supply, and the semi-finished turbine disc 13 is connected to the positive pole of the power supply. The tool grinding wheel 14 is fed at a constant speed under the control of the multi-axis linkage drive system 18 of the machine tool, and the multi-dimensional ultrasonic vibration system 16 drives the tool grinding wheel 14 to vibrate at high frequency along its feeding direction , the value of the gap between poles changes regularly and periodically.

[0023] When the multi-dimensional ultrasonic vibration system 16 drives the tool grinding wheel 14 away from the machining surface of the turbine disk semi-finished produ...