Prediction method of minimum machining gap and average erosion rate during spin printing electrolytic machining

A technology for processing gaps and processing processes, applied in electric processing equipment, electrochemical processing equipment, processing special circuits, etc., can solve problems such as slow solution process, large amount of calculation, and large number of iterative steps

Active Publication Date: 2020-07-28
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, the finite element method is used to solve the electrolytic machining process, the number of iteration steps is large, the calculation amount is large, and the solution process is slow
In addition, in spin printing electrolytic machining, the anode of the workpiece and the cathode of the tool are both annular rotating bodies, which is very different from traditional electrolytic machining.

Method used

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  • Prediction method of minimum machining gap and average erosion rate during spin printing electrolytic machining
  • Prediction method of minimum machining gap and average erosion rate during spin printing electrolytic machining
  • Prediction method of minimum machining gap and average erosion rate during spin printing electrolytic machining

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Embodiment Construction

[0058] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0059] Such as figure 1 As shown, the present invention designs a dynamic simulation and prediction method of machining gap and erosion speed in the process of spin printing electrolytic machining. In the actual application process, it specifically includes the following steps:

[0060] The specific design steps are as follows:

[0061] Step 1. Determine according to the requirements of electrolytic machining: the initial radius value R of the anode of the workpiece a , initial radius value of cathode tool R c , initial machining gap G 0 , workpiece anode surface voltage U a , cathode tool surface voltage U c , workpiece anode and cathode tool speed w, workpiece anode radial erosion per revolution Δr, cathode tool feed rate v 0 . Along any section, divide the circumference of the anode surface of the circular work...

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Abstract

The invention discloses a dynamic simulation prediction method for a machining gap and an erosion removal rate in a rotary printing electrolytic machining process, and belongs to the technical field of electrolytic machining. According to the method, an actual rotary printing electrolytic machining process is simulated by establishing a dissolution model of a material on surface of a workpiece anode; an analytical solution of current density of any point on the surface of the workpiece anode is solved by utilizing a laplacian equation of complex fractional linear mapping; each circle of machining process of the workpiece anode is dispersed into a plurality of extremely small time periods by adopting a discrete method, and the erosion removal thickness of the material on the surface of theworkpiece anode is reduced along the radial direction; and the discrete and iterative simulation of Matlab are used to solve the dynamic change values of the machining gap and the erosion removal rateof the anode surface material after one circle. In the actual rotary printing electrolytic machining process, the optimal electrolytic machining process parameters can be obtained by means of the method, test time is greatly saved, and theoretical guidance is provided for selection of rotary printing electrolytic machining parameters.

Description

technical field [0001] The invention relates to a method for predicting the minimum machining gap and the average erosion rate during spin printing electrolytic machining, belonging to the field of electrolytic machining. Background technique [0002] In the machinery manufacturing industry, taking an aero-engine casing as an example, its wall thickness is usually 1-3mm. Using traditional machining, the workpiece is easily deformed, the residual stress is large, the tool loss is serious, the processing cycle is long, and the processing cost is high; Using the chemical milling method, it is difficult to guarantee the uniformity and roughness of the wall thickness of the thin-walled parts, and the strong acidic corrosion solution used has great environmental pollution. The high-precision machining of thin-walled casings has become a bottleneck restricting the development and production of aero-engines. [0003] Electrolytic machining is based on electrochemical anodic dissolu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23H3/00B23H3/02G16C20/10
CPCB23H3/00B23H3/02G16C20/10
Inventor 曹文见王登勇朱荻朱增伟何斌方忠东
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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