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Four-axis blade measurement system and method

A measurement system and blade technology, applied in the direction of measurement devices, instruments, optical devices, etc., can solve the problems of high cost, low efficiency, bad working environment, etc., and achieve the effect of reducing labor costs, improving work efficiency, and increasing company benefits

Inactive Publication Date: 2018-09-21
XIAN TECHNOLOGICAL UNIV
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Problems solved by technology

However, the cost is high and the working environment is harsh. Due to the point-by-point pause measurement method, the efficiency is low. The contact probe causes deformation and surface stress on the workpiece surface, and the radius of the probe usually needs error compensation.

Method used

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  • Four-axis blade measurement system and method
  • Four-axis blade measurement system and method
  • Four-axis blade measurement system and method

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Embodiment Construction

[0037] In order to make the objects and advantages of the present invention clearer, the present invention will be specifically and completely described below in conjunction with specific embodiments. The specific technical solutions are only used to illustrate the present invention, not to limit it, and those skilled in the art should understand that all other technical solutions obtained without creative work belong to the protection scope of the present invention.

[0038] see Figure 1-4 , the length of the blank airfoil of the blade is 155mm, the width is 80mm, the minimum thickness is 4mm at the front and rear edges, and the airfoil is a complex curved surface. The specific steps of a blade measurement system and method of the present invention are as follows:

[0039] Step 1: Use the "3-2-1" method to establish the blade coordinate system, measure three points on the bottom plane of the blade root to construct the direction, measure two points on the side of the back d...

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Abstract

The invention discloses a four-axis blade measurement system and method. The four-axis blade measurement system comprises a four-axis computer numerical control (CNC) platform, a laser sensor, computer measurement software and a motion control card; the laser sensor is mounted on a Y-axis moving guide rail of the four-axis CNC platform through a fixture, and the relative position requirements between a measuring head and a blade profile are met through linear motions of X, Y and Z axes; a blade is mounted on a rotating table C axis of the four-axis CNC platform through a chuck, and the rotation motion of the rotating table C axis keeps a relative angle to a laser beam; according to a planned measurement path and measurement strategies, the profile data of the blade is obtained through position information fed back by a grating sensor and a saser sensor, coordinate system transformation and an MATLAB fitting algorithm. The four-axis blade measurement system and method disclosed by the invention can improve the blade measurement accuracy, have the advantages of being simple to operate and high in measurement efficiency, can be used for solving the technical difficulty of quick measurement on the blade and promote the production and the continuous development of a special blade measuring device.

Description

technical field [0001] The invention relates to blade measurement technology, in particular to a four-axis blade measurement system and method. Background technique [0002] In terms of blade profile detection, the biggest feature of using a three-coordinate measuring machine for detection is high precision. However, the cost is high and the working environment is harsh. Due to the point-by-point pause measurement method, the efficiency is low. The contact probe causes deformation and surface stress on the workpiece surface, and the probe radius usually needs error compensation. The non-contact laser method has been gradually applied in production practice due to its advantages of high automation, high information content and high detection efficiency. The laser scanning non-contact system takes into account the high precision of the motion control of the three-coordinate measuring machine, the high efficiency of the laser scanning measurement, the accessibility of the work...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24
CPCG01B11/24
Inventor 曹岩贾峰董云蒙刘长柱
Owner XIAN TECHNOLOGICAL UNIV
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