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Modular Machine Tool ＆ Automatic Manufacturing Technique. 2014, (06) Core

Research on the Design and Experiment of Laser Measurement System for Blade Surface Based on Four-axis LinkageChinese Full Text

LIN Hai-bo;ZHAO Wen-hui;Department of Mechanical and Electrical Engineering,Taizhou Vocational ＆ Technical College;Key Laboratory of Mechatronics of Taizhou;

Abstract: The shape error of blade surface has great influence on the secondary flow loss. It is difficult to manufacture the blade due to the complexity of surface modeling and the redundance of decription parameters. In this article,the key technology of blade surface measurement is studied and verified with experiments. Based on closed-loop four-axis-linkage rotary laser measurement system,the open CNC system accuracy has reach 0. 015 mm. According to the system,through measuring several sections of blade along the normal direction and comparing the model profile with the theoretical profile,it is easy to determine whether it is in a given range of tolerance. The system will automatically process multiple model-lines data and extract some parameters such as string length,string obliquity,front and rear edge radius,maximum thickness,arc features and so on. The experiment confirms that the system can achieve the non-contact,high-efficient,and high-precise measurement for the model-surface of blade. Its feasibility and correctness are proved,and has been applied in production.
Keywords：

blade laser measurement; four-axis linkage; motion control; curve fitting; feature extraction;

  • DOI：

    10.13462/j.cnki.mmtamt.2014.06.024

  • Series：

  • Subject：

  • Classification Code：

    TP274

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