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Machining method for guaranteeing shape completeness of air inlet and air outlet side circular arcs of blade

A technology of intake and exhaust edges and processing methods, which is applied in the field of parts processing, can solve the problems of incomplete arcs of the intake and exhaust edges of the blade profile, over-polishing, etc., and achieve the goal of improving the processing pass rate and eliminating the processing over-polishing phenomenon Effect

Inactive Publication Date: 2015-03-25
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Problems solved by technology

[0002] At present, the commonly used processing method for the processing of the compressor blade profile is to firstly use CNC milling to remove the allowance and ensure the accuracy of the profile, and then use manual polishing to remove the traces of the milling cutter and process to meet the surface roughness requirements. This processing method has the characteristics of simple operation, good processing flexibility, and high efficiency. However, due to the small diameter of the inlet and outlet arcs in the structure of some blade profiles, it is very easy to perform manual polishing according to common processing methods. Over-polishing occurs, resulting in incomplete arcs of the inlet and outlet edges of the blade profile

Method used

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  • Machining method for guaranteeing shape completeness of air inlet and air outlet side circular arcs of blade
  • Machining method for guaranteeing shape completeness of air inlet and air outlet side circular arcs of blade
  • Machining method for guaranteeing shape completeness of air inlet and air outlet side circular arcs of blade

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Embodiment Construction

[0020] like Figure 1~4 As shown, a processing method to ensure the integrity of the arc shape of the inlet and exhaust edges of the blade. The machining of the blade surface adopts the longitudinal numerical control milling method, and the blade surface is divided into the arc area of ​​the inlet edge 1 and the arc of the exhaust edge. Area 2, blade basin profile area 3 and blade back profile area 4 four processing areas, air inlet edge arc area 1 includes inlet edge arc 13, inlet edge arc and blade basin profile curve tangent point 8 The section 7 extending 3 mm outside the arc of the intake side and the section 6 extending 3 mm from the point of tangency between the arc of the intake side and the blade back surface curve 5, the arc of the exhaust side 2 includes the exhaust Edge arc 14, point of tangency between the arc of the exhaust edge and the profile curve of the blade basin 9 extends 3 mm to the arc of the exhaust edge 10 and point of tangency between the arc of the e...

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Abstract

The invention relates to a machining method for parts, in particular to a machining method for guaranteeing shape completeness of air inlet and air outlet side circular arcs of a blade. According to the technical scheme, a longitudinal numerical control milling mode is adopted for machining the profile of the blade, and the profile of the blade is divided into four machining regions which comprise an air inlet side circular arc region, an air outlet side circular arc region, a blade basin profile region and a blade back profile region; the two machining regions of the blade basin profile region and the blade back profile region are controlled through a numerical control program and machined in a normal tool path mode, and the two machining regions of the air inlet side circular arc region and the air outlet side circular arc region are controlled through a numerical control program and machined in an encrypted tool path mode. According to the machining method, through improving numerical control milling and polishing modes, on the premise that in the machining process of the profile of the blade, machining efficiency is not affected too much, an improvement on the machining quality of the air inlet and air outlet side circular arcs of the blade is guaranteed, and the qualified rate of the machined profile of the blade is increased.

Description

technical field [0001] The invention relates to a processing method of a part, in particular to a processing method for ensuring the integrity of the arc shape of the inlet and outlet sides of the blade. Background technique [0002] At present, the commonly used processing method for the processing of the compressor blade profile is to firstly use CNC milling to remove the allowance and ensure the accuracy of the profile, and then use manual polishing to remove the traces of the milling cutter and process to meet the surface roughness requirements. This processing method has the characteristics of simple operation, good processing flexibility, and high efficiency. However, due to the small diameter of the inlet and outlet arcs in the structure of some blade profiles, it is very easy to perform manual polishing according to common processing methods. Over-polishing occurs, resulting in incomplete circular arcs at the inlet and exhaust edges of the blade profile. For this re...

Claims

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Application Information

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IPC IPC(8): B23P15/02
CPCB23P15/02
Inventor 刘随建曹阳李美荣宋成刘建伟
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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