Internal channel ultrasonic vibration assisted internal spray electrolytic grinding system and method

Abstract

The invention discloses an internal channel ultrasonic vibration auxiliary internal spraying type electrolytic grinding system and method. The system and method solves the problem that the machining efficiency of a deep hole, a cavity and an inner channel is low at present, and the system and method can improve the machining efficiency and reduce the roughness of the machining surface. The systemmainly comprises a motion control device, a current detection control device, an electrolyte circulating device, an ultrasonic vibration device and an inner spraying type tubular conductive grinding head, wherein the motion control device is used for controlling the high-speed rotation and feeding stability of a main shaft, the current detection control device is used for detecting the current size and controlling the generation of sudden change current in the machining process in real time, the electrolyte circulating device is used for realizing supply, filtering and recycling of the electrolyte, the ultrasonic wave vibration device is used for realizing the effects that the conductive grinding head rapidly removes a passivation film on the surface of a workpiece under the ultrasonic cavitation effect of the electrolyte and the electrochemical reaction is enhanced, and the inner spraying type tubular conductive grinding head avoids the turbulence effect between the grinding head andthe workpiece in the machining process, and maintains the stability of an electrolyte flow field.

Description

technical field [0001] The invention relates to the technical field of electrolytic grinding processing of deep holes, mold cavities and internal channels, in particular to an internal channel ultrasonic vibration assisted internal spray electrolytic grinding system and method. Background technique [0002] In view of the characteristics of laser additive manufacturing of titanium alloys and nickel-based superalloys in the high-end aerospace equipment, the internal channel surface roughness value is large, the distribution of stress and microstructure varies greatly, and the dimensional accuracy is poor, traditional machining will lead to workpiece processing. The region generates higher temperatures and greater cutting forces, reducing tool life. Electrolytic grinding is not limited by material strength, hardness and toughness, and there is no residual stress on the workpiece surface. Due to the electrolyte turbulence between the tool electrode and the workpiece, the gap f...

AI Technical Summary

Problems solved by technology

Due to the electrolyte turbulence between the tool electrode and the workpiece, the gap flow field is unstable, which affects the machining surface accuracy and quality of the internal channel.

In order to improve the machining surface accuracy, it is necessary to reduce the spindle speed and reasonably control the flow rate and flow of the electrolyte. This method is only suitable for small batch processing

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