| X-ray CT detection system using manipulator for the aircraft engine blade |
| Function Summary |
| X-ray CT detection system using manipulator for new CT system, by the use of rotating X-ray detection method, can effectively detect micro defects in the aircraft engine blade. Thus, the system can be used to assess the quality of the blade, and to improve the security and reliability of the aircraft flight process. |
| Technical features |
| The traditional X-ray CT detection device, in general, uses a rotating platform to achieve the rotation of the workpiece, leading to poor flexibility where the clamping attitude of the workpiece can not be flexibly changed according to the internal structure of the workpiece. |
| The X-ray CT detection system using manipulator, however, is a new CT system based on the six degrees of freedom industrial robot. The system has six degrees of freedom of space, and can flexibly achieve multidirectional scanning and positioning for the aircraft engine blade. The system is an effective solution to replacing the traditional rotating platform detection for blades. Meanwhile, the system, to a certain extent, expands the scope of the detectable size of the blade, and improves corresponding technical indicators, thus accelerating the development process of the automatic testing technology. |
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| X-ray CT detection system |
| Specifications |
| Density resolution: 5%~6% |
| Equivalent resolution of defects CT detection: Equivalent diameter is less than 0.05mm |
| Scanning accuracy: accumulated error for a week is less than 0.1° |
| Technical principle |
| This system, based on the attenuation law of X-ray combined with CT scanning technique and the manipulator trajectory planning, achieves the detection of internal defects of aircraft engine blades. |
| The advantage of this system is that it can flexibly adjust the position and the rotation pattern of the workpiece according to the internal structure of the workpiece. Based on the synchronous control of the industrial robot and the data acquisition system, the system can realize blade data acquisition under different position postures, thus, extracting multidirectional projection data containing internal structure information of the blade, and reconstructing the 3-D image based on the extracted data. In this way, both the qualitative and the quantitative descriptions of the aircraft engine blade defects can be realized, and the properties of the blade internal defects can be fully known. |
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| System schematic |
| Applications |
| This system can be applied to the detection of casting and forging aircraft engine blades with inner cavities and complex structures. |
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