Method for designing blade blank for electrolytic machining

A design method and blade technology, applied in electrochemical processing equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of low production efficiency, easy deformation, poor precision, etc., and achieve high processing efficiency, long processing time, and qualified rate. high effect

Active Publication Date: 2018-04-27
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a design method of blade blanks, which can be used in electrolytic machining, and can solve the problems of low production efficiency, easy deformation, and poor precision in traditional machining methods

Method used

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  • Method for designing blade blank for electrolytic machining
  • Method for designing blade blank for electrolytic machining
  • Method for designing blade blank for electrolytic machining

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Embodiment

[0022] A blade blank design method for electrolytic machining, the blade is a compressor stator blade without a mounting plate, made of GH4169 superalloy, such as image 3 As shown, the blade blank is composed of three parts: the mounting plate, the airfoil profile, and the process boss, and is designed from the following four aspects:

[0023] (1) Design of the mounting plate: a mounting plate is added at the blade root, the mounting plate is designed as a rectangle of 25mm (length) × 32mm (width) × 10mm (thickness), and the mounting plate is designed after the effective part size is extended by 2mm , so that the length H of the mounting plate can be completely processed after the electrolysis of the blade body is completed (see image 3 ).

[0024] (2) The design of the process boss: a process boss is added at the blade tip. The shape of the process boss is a cuboid. After the effective size of the blade tip is extended by 2mm, the process boss is designed. The process boss a...

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Abstract

The invention aims at providing a method for designing a blade blank for electrolytic machining. A blade is a compressor stator blade without a mounting plate, and the blade blank is composed of the mounting plate, a blade body profile and a process boss. The blade blank is mainly designed from the following four aspects: (1) the design of the mounting plate, specifically, the mounting plate is added at the root of the blade; (2) the design of the process boss, specifically, the process boss is added at the tip of the blade; (3) the design of the theoretical allowance of the blade body profile, specifically, the single allowance of a blade body is designed to be 1.2mm, the allowance is added along the normal, and both the exhausting and leading edges of the blade body are phi 2mm and extend outwards for 3mm; and (4) the control of tolerance of the blade body profile, specifically, the control of tolerance of the blade body profile is designed as +0.4mm and -0.2mm. The blade blank designed by the method is used in electrolytic machining and can solve the problems of low production efficiency, easy deformation and poor precision in the traditional machining method.

Description

technical field [0001] The invention relates to the technical field of high-temperature alloy blade precision forging and forming, and in particular provides a blade blank design method for electrolytic machining. Background technique [0002] Most of the blade materials are high-temperature alloys and titanium alloys, which are difficult to process due to their high hardness and toughness. At the same time, some blades have thin profile and large twist. The traditional processing method has low production efficiency, easy deformation, and poor precision. Electrolytic processing can solve the above problems. [0003] Electrolytic machining is a method of forming and processing metal materials by using the electrochemical reaction principle of metal to produce anode solution in electrolyte. During electrolytic machining, the vane is used as the anode, the tool is used as the cathode, and a high-speed electrolyte passes through the narrow gap between the two electrodes. When...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H3/00
CPCB23H3/00
Inventor 关红王丹李治华邰清安于冰
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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