Model of the machining process for complex-profile aerospace parts in a pseudo-fluidised abrasive layer
Heading:
| 1Kachan, OYa., 1Ulanov, SO 1National University «Zaporizhzhia polytechnic», Zaporizhzhia, Ukraine |
| Space Sci. & Technol. 2025, 31 ;(5):55-63 |
| https://doi.org/10.15407/knit2025.05.055 |
| Publication Language: Ukrainian |
Abstract: This paper presents a model of the machining process for complex-profile parts in a pseudo-fluidised abrasive bed using air jets.
The aim of the study is to improve edge machining accuracy by optimizing air jet feed parameters. The work employs kinematic diagrams and analytical relationships that describe jet expansion upon exiting the nozzle and its interaction with the machined surfaces. The proposed model takes into account the influence of key technological parameters – the air jet feed angle and pressure – on the process of edge rounding formation.
Dependencies have been established to determine the optimal air jet feed angle to the machined edges and the pressure at the nozzle exit, ensuring uniform rounding of sharp and blunt edges in “oblique” grooves.
The scientific novelty lies in the development of a machining process model that considers the specifics of the pseudo-fluidised environment and the impact of the air jet on various edge types. The practical value of the study lies in the potential to improve the accuracy and quality of machining complex-profile aerospace components.
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| Keywords: air jet, complex-profile part, compressor disk, edge, machining accuracy, nozzle, pseudo-fluidised abrasive bed, «oblique» groove |
References:
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https://doi.org/10.1007/BF01532499
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8. Kartyshev, B. N., Rodichenko, A. B. Vibroprocessing of Gas Turbine Engine Disks. Aviation Industry, 1976, No. 3, pp. 23-25.
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10. Yatsenko, V. K., Kostenko, N. A. Criteria for Evaluating Surface Strengthening of Machine Parts. Problems of Strength, 1985, No. 3, pp. 23-26.
https://doi.org/10.1007/BF01755915
11. Kachan, O. Ya., Ulanov, S. O. A Model of the Edge Machining Process of Aerospace Components Using Free Abrasive and Air Jets. Space Science and Technology, 2024, Vol. 30, No. 5, pp. 29-35.
https://doi.org/10.15407/knit2024.05.029
https://doi.org/10.1007/BF01532499
2. Boguslaiev, V. A., Yatsenko, V. K., Pritchenko, V. F. Technological Support and Prediction of the Load-Bearing Capacity of Gas Turbine Engine Parts. Kyiv: Manuscript, 1993. 333 p.
3. Boguslaiev, V. O., Kachan, O. Ya., Yatsenko, V. K., et al. Aviation Engine Manufacturing Technology. Part III. Methods of Machining Engine Parts. Zaporizhzhia: JSC "Motor Sich" Publishing, 2008. 638 p.
4. Honchar, N. V., Pavlenko, D. V., Trubnikov, M. A., Chernetsov, V. M. Study of Geometric Parameters of Compressor Disk Grooves of the "Dovetail" Type and Determination of Their Optimal Combination. Journal of Engine Engineering, 2007, No. 1, pp. 60-65.
5. Honchar, N. V., Yatsenko, V. K., Pavlenko, D. V. Durability of the Rim Area of Compressor Disks Made of Heat-Resistant Alloy EI 698-VD Under Operating Temperatures. Journal of Engine Engineering, 2004, No. 3, pp. 20-23.
6. Kataev, N. K. Improving the Reliability of the Low-Pressure Compressor Disk of a Gas Turbine Engine. In: Improvement of Abrasive-Finishing and Strengthening Technologies in Mechanical Engineering: Collection of Scientific Papers. Perm: Perm Polytechnic Institute, 1984, pp. 109-113.
7. Boguslaiev, V. A., Kravchenko, I. F., Kachan, A. Ya., Sakhno, A. H., Mozhovoi, V. F. Technological Support for the Performance Characteristics of Gas Turbine Engine Parts. Compressor and Turbine Disks. Part III. Monograph. Zaporizhzhia: JSC "Motor Sich" Publishing, 2011. 428 p.
8. Kartyshev, B. N., Rodichenko, A. B. Vibroprocessing of Gas Turbine Engine Disks. Aviation Industry, 1976, No. 3, pp. 23-25.
9. Sakhno, A. H., Yatsenko, V. K., Stebelkov, I. A. Optimization of the Ultrasonic Strengthening Mode for the Rim Area of Compressor Disks. Aviation Industry, 1993, No. 2, pp. 12-13.
10. Yatsenko, V. K., Kostenko, N. A. Criteria for Evaluating Surface Strengthening of Machine Parts. Problems of Strength, 1985, No. 3, pp. 23-26.
https://doi.org/10.1007/BF01755915
11. Kachan, O. Ya., Ulanov, S. O. A Model of the Edge Machining Process of Aerospace Components Using Free Abrasive and Air Jets. Space Science and Technology, 2024, Vol. 30, No. 5, pp. 29-35.
https://doi.org/10.15407/knit2024.05.029