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Process method for reducing impeller blade side milling machining deformation errors

An impeller blade, processing deformation technology, applied in metal processing equipment, milling machine equipment, manufacturing tools, etc., can solve the problems affecting the quality, efficiency, precision and surface quality of impeller blade processing, blade deformation, error increase, etc.

Inactive Publication Date: 2017-08-18
SHANGHAI INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When machining impeller blades with such a large height-to-thickness ratio (h / a), the vibration generated by the milling force during the machining process will cause blade deformation and increase the error, which greatly affects the quality, efficiency, and accuracy of impeller blade processing. Accuracy and Surface Quality

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  • Process method for reducing impeller blade side milling machining deformation errors
  • Process method for reducing impeller blade side milling machining deformation errors
  • Process method for reducing impeller blade side milling machining deformation errors

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] A process method for reducing the deformation error of impeller blade side milling, the specific steps are:

[0019] Step 1: Reserve a rough machining allowance

[0020] According to the roughly linear relationship between the deformation of each point on each impeller blade during the machining process, the cutting force and the cutting depth, it is determined that the rough machining allowance reserved for the impeller blade is the thickest at the blade root and the thinnest at the blade crown. And reserve Δ for the rough machining allowance of the blade according to S;

[0021] S(h / a) Leaf crown margin reserve Δ 1

Leaf root allowance reserved Δ 2

15≤S<20

0.05mm 0.15~0.40mm 20≤S<25

0.05mm 0.35~0.90mm 25≤S<30

0.05mm 0.84~1.25mm 30≤S<35

0.05mm 0.67~1.78mm

[0022] Where h is the h...

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Abstract

The invention discloses a process method for reducing the deformation error of the side milling of the impeller blade; firstly, a rough machining allowance is reserved, and then, along the impeller root curve with the reserved excess allowance and another curve opposite to the impeller root Take equal enough points respectively, connect the corresponding points taken on the two curves, use NX secondary development to program to form tool positions and perform rough machining; finally, use conical milling cutter side milling for semi-finishing and finishing Machined to the required size. The side milling process according to the method can effectively control the machining deformation of the impeller blade, reduce the machining error, improve the rigidity of the impeller blade, improve the quality of the blade surface, and improve the processing efficiency. Compared with the traditional method, the error of side milling deformation is effectively reduced.

Description

technical field [0001] The invention relates to an aeroengine blade manufacturing and precision cutting process, in particular to a process method capable of reducing the deformation error of the side milling process of the impeller blade. Background technique [0002] The impeller blade is a typical thin-walled part. It is not only the core part of an aero-engine, but also used in high-precision industrial equipment. Its manufacturing accuracy will directly affect the aerodynamic performance of the impeller blade. With the continuous development of high-speed cutting technology, mechanical structure technology, tool and material technology and other disciplines, the precision of curved surface processing is getting higher and higher. However, the main problem at present is the deformation error caused by the influence of milling force and other forces in the processing process, and the processing method leads to low efficiency and high cost. Seriously hindered the developm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C3/18
CPCB23C3/18
Inventor 郑刚赵涛涛吕博鑫吴雁张而耕
Owner SHANGHAI INST OF TECH
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