RU1832069C - Method of dimensional electrochemical machining - Google Patents

Abstract

Usage: electrochemical processing of GTE blades. SUMMARY OF THE INVENTION: processing is carried out by stationary electrodes-tools (HEY) when using a rotary machine with moving the workpiece from one working position (RP) to the next. HEY not every subsequent RP installed with a shift in the direction of the machined surfaces. The shift is equal to the calculated value of the allowance taken on the previous RP. Batch removal of allowance on each RP is carried out by EI with a limited working surface located opposite the zone of maximum allowance, while the removal area is increased during the transition from one RP to the subsequent RP by increasing the working surface of EI in accordance with the nature of the distribution of allowance on the workpiece and the linear amount of removal the allowance on the previous RP until the RP with the full working surface HEY and the formation of the entire profile of the workpiece. 3 ill.

Description

The invention relates to mechanical engineering, in particular to electrochemical processing methods, and is intended for processing GTE blades.

The aim of the invention is to increase the accuracy of processing and reduce the minimum amount of allowance at its initial unevenness due to the localization of the processing process.

Figure 1 presents a diagram of the processing of the workpiece of the blade at the first position of the rotary machine; figure 2 is a diagram of the processing of the workpiece of the blade at one of the intermediate positions of the rotary machine; Fig. 3 is a diagram of the processing of a blade blank at one of the last positions after leveling the allowance at the previous positions.

The schemes include electrodes-tools 1 and 2 with insulating layers 3 and 4, the workpiece 5, current lead 6.

The manufacture of electrode electrodes is carried out as follows.

On the basis of the drawing of the workpiece obtained, for example, by stamping, and the drawing of the finished part, the nature of the distribution of machining allowances and the areas to be processed first and subsequent are determined. Next, based on the linear amount of removal at each position, the boundaries of the blade blank section are determined, which are to be processed at the minimum specified interelectrode gap and the gap formed at the end of a single cycle, which determines the working surface

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the value of the electrode-tool in this position. The remaining non-working surface of the electrode-tool is insulated. The fabricated tool electrodes are mounted according to a certain sequence on the positions of the rotary machine in the tool blocks and are set relative to the final profile of the blade pen in a predetermined working position. Electrodes-tools at each subsequent position are installed with a shift in the direction of the machined surfaces. The shift is equal to the calculated value of the allowance removed at the previous position.

After carrying out these operations, the rotary machine is turned on and carries out electrochemical processing of the blades according to a predetermined sequence diagram. Using the proposed method will improve the accuracy of processing, localize the process, reduce the minimum required allowance for its initial unevenness, and reduce unproductive energy consumption during maintenance. processing process.

Claims (1)

SUMMARY OF THE INVENTION A method of dimensional electrochemical processing carried out by stationary 30 electrode electrodes 5 0 5 0 sequentially at the working positions relative to which the workpieces are moved and machined, they are necessary: so that, in order to increase the accuracy of machining GTE blades, tool electrodes are installed at each subsequent position with a shift towards the workpiece by a calculated linear value equal to the specified allowance at the previous position, while at the end of each unit cycle the values of the technological parameters of the processes are compared with their reference values and, according to the results of The actual amount of removal is determined and the technological parameters for processing at the next position are adjusted, and the allowance is removed at each position with tool electrodes with a limited working surface, which is located opposite the maximum allowance zone, while the removal area is increased when moving from position to position by increasing the working surface of the tool electrodes in accordance with the nature of the distribution of allowances on the workpiece and the linear value of the allowance for the previous the current position until reaching the position with the full working surface of the electrode-tool and the formation of everything. profile details. Ftsg. 1