Whole blade disk electrolysis machining method and device with cathode feeding in variable-amplitude multi-way reciprocating way
A technology of integral blisks and processing methods, applied in the direction of electrochemical processing equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of difficult control of precision and surface quality, reduce the forming precision of processed blades, etc., and improve processing stability , Avoid secondary erosion, improve the effect of updating speed
Active Publication Date: 2015-03-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
The above method of processing a single blade with the cathode of the pair of tools facing each other can obtain better forming accuracy of the blade surface, but after one blade is processed, when another adjacent blade is processed, the processed blade will be exposed to the Secondary erosion is caused in the processing area, which reduces the forming accuracy of the processed blade
At the same time, this type of processing method only processes the profile of the blade, and there is no feed rate for the profile of the blade root and hub, and is always in a state of stray erosion. Its accuracy and surface quality are difficult to control. Although the US-4657649 uses cathode forming The oblique feed at a certain angle makes the cathode feed towards the blade root and the hub, but when the next blade is processed, there will still inevitably be "knife catch" at the blade root and the hub, and there are still certain limitations
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[0020] Implementation of the present invention - "Cathode variable amplitude multi-directional reciprocating feeding method and device for integral blisk electrolytic machining" such as figure 1 As shown, it includes connecting the integral blisk blank 1 with the positive pole of the electrolytic machining power supply 9, and connecting the cathode tool 4 with the negative pole of the electrolytic machining power supply 9; The liquid tank 11 is connected into a loop, and the electrolyte is drawn out from the electrolyte tank 11 by the pump 8, so that the electrolyte flows in from the blade back processing area 2) or the blade basin processing area 5), and flows through the blade root and hub processing area 3, It flows out from the blade pot processing area 5 (or blade back processing area 2); the electrolytic processing power supply 9 is turned on during processing, and the motion system controls the cathode tool 4 to reciprocate around the axis of the overall blisk blank 1 ...
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The invention relates to a whole blade disk electrolysis machining method and a whole blade disk electrolysis machining device with a cathode feeding in a variable-amplitude multi-way reciprocating way, belonging to the field of electrolysis machining. The electrolysis machining method is characterized in that a tool cathode swings between a blade basin and a blade back while feeding along the radial direction of a blade disk, so that a blade basin profile, a blade back profile, a blade root profile and a wheel hub profile are machined simultaneously; and the swinging amplitude of the tool cathode between the blade basin and the blade back increases as the tool cathode approaches a blade root. The problem that the blade basin profile, the blade back profile and the blade root profile in a blade-to-blade channel are difficultly taken into account simultaneously in the electrolysis machining of a whole blade disk is solved, machined profiles are prevented from suffering secondary corrosion removal in follow-up machining and the machining accuracy is improved.
Description
technical field [0001] The invention relates to an electrolytic machining method and device for an integral blisk with cathode variable amplitude multi-directional reciprocating feed, and belongs to the technical field of electrochemical machining. Background technique [0002] With the continuous development of the aviation industry, the performance requirements of aero-engines are getting higher and higher, and many new technologies and new structures have emerged, one of which is the blisk. The integral blisk makes the blade and the hub into a whole, replacing the traditional connection structure of the blisk through the tenon of the blade and the tenon of the hub and the locking piece, so that the number of parts is greatly reduced, the weight is reduced, and the airflow in the tenon and tenon is avoided loss, increased thrust. However, the overall blisk structure is complex, the passage between the blades is narrow, and the blade surface is processed with high precisio...
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IPC IPC(8): B23H3/00B23H9/00B23H7/30
Inventor 朱荻刘嘉徐正扬朱栋
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS