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Analysis of Workpiece Locating Error Using Geometric Fixture Model: A Theoretical and Experimental Study | ||
| AUT Journal of Mechanical Engineering | ||
| مقاله 7، دوره 4، شماره 2، شهریور 2020، صفحه 229-240 اصل مقاله (1.39 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/ajme.2019.16034.5798 | ||
| نویسندگان | ||
| Hadi Parvaz* 1؛ Mehdi Bodaghy Aleny2 | ||
| 1Faculty of Mechanical and Mechatronics Engineering, Shahrood University of Technology, Shahrood, Iran | ||
| 2Tarbiat Modares University, Mechanical Engineering Department, Tehran, Iran | ||
| چکیده | ||
| Investigation of the robustness of the locating layout is an important analysis which is usually conducted in the verification stage of the fixture design procedure. In such an analysis, workpiece locating error is modeled by considering its sources in the workpiece and locating elements. The main focus of the present study is to investigate the robustness of the locating layout which is designed for the workpiece in the machining fixture, both theoretically and experimentally. Geometric model of the fixture is employed for theoretical analysis of errors in locating a workpiece using the well-known 3-2-1 locating principle. For validation, computer-aided assembly model is designed for calculating the workpiece locating error and comparing the results to the theoretical predictions. Experiments are also designed and conducted for validation of the theoretical predictions. Two types of the machining workpiece are incorporated as case studies for the validation process. Maximum error values equal to 3.6% and 6.1% are obtained between the theoretical predictions for the workpiece locating error and results of the computer-aided design model and experiments, respectively. Results of the present study confirmed that the locating layout with the maximum distance between its locators provided the minimum locating error value for the workpiece. Agreement between the theoretical predictions and results of the computer-aided model and experiments confirmed the applicability of the geometric fixture model and credibility of its results. | ||
| کلیدواژه‌ها | ||
| Experiment؛ Fixture design؛ Geometric fixture model؛ Jacobian؛ Locating error | ||
| مراجع | ||
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[1] S. Pehlivan, J.D. Summers, A review of computer- aided fixture design with respect to information support requirements, International Journal of Production Research, 46(4) (2008) 929-947.
[2] H. Asada, A.B. By, Kinematic analysis of workpart fixturing for flexible assembly with automatically reconfigurable fixtures, IEEE Journal on Robotics and Automation, 1(2) (1985) 86–94.
[3] M.Y. Wang, An optimum design for 3-D fixture synthesis in a point set domain, IEEE Transactions on Robotics and Automation, 16(6) (2000) 839-846.
[4] J.S. Carlson, Quadratic sensitivity analysis of fixtures and locating schemes for rigid parts, Journal of Manufacturing Science and Engineering, 123(3) (2001) 462-472.
[5] M.Y. Wang, Tolerance analysis for fixture layout design, Assembly Automation, 22(2) (2002) 153-162.
[6] Y. Kang, Y., Rong, J.-C. Yang, Computer-aided fixture design verification: Part 1, the framework and modeling, International Journal of Advanced Manufacturing Technology, 21(10-11) (2003) 827-849.
[7] Y. Kang, Y. Rong, J.C. Yang, Computer-aided fixture design verification. Part 3. Stability analysis, International Journal of Advanced Manufacturing Technology, 21(10- 11) (2003) 842-849.
[8] A. Raghu, S.N. Melkote, Modeling of workpiece location error due to fixture geometric error and fixture-workpiece compliance, Journal of Manufacturing Science and Engineering, 127(1) (2005) 75-83.
[9] H. Song, Y. Rong, Locating completeness evaluation and revision in fixture plan, Robotics and Computer Integrated Manufacturing, 21(4-5) (2005) 368-378.
[10] G.H. Qin, W.H. Zhang, M. Wan, A mathematical approach to analysis and optimal design of a fixture locating scheme, International Journal of Advanced Manufacturing Technology, 29(3-4) (2006) 349-359.
[11] S. Vishnupriyan, M. Majumder, K. Ramachandran, Optimization of machining fixture layout for tolerance requirements under the influence of locating errors, International Journal of Engineering, Science and Technology, 2(1) (2010) 152-161.
[12] G. He, L. Guo, W. Tian, X. Zhao, The prediction of fixture comprehensive influence on the machining error of features pattern, in: ASME 2015 International Manufacturing Science and Engineering Conference, American Society of Mechanical Engineers, 2015, pp. 26-34.
[13] W. Tang, Y. Li, J. Yu, J. Zhang, L. Yu, Locating error analysis for workpieces with general fixture layouts and parameterized tolerances, Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 230(3) (2016) 416-427.
[14] S. Khodaygan, A method for optimal reduction of locating error with the minimum adjustments of locators based on the geometric capability ratio of process, International Journal of Advanced Manufacturing Technology, 94(9-12) (2018) 3963-3978.
[15] S. Khodaygan, A method for locator errors compensation in the fixture-workpiece system, SAE International Journal of Materials and Manufacturing, 6(3) (2013) 494-501.
[16] X.J. Wan, J. Yang, H. Zhang, Z.Y. Feng, Z. Xu, Optimization of fixture layout based on error amplification factors, Journal of Computing and Information Science in Engineering, 18(4) (2018) 1-12.
[17] H. Parvaz, M.J. Nategh, Development of locating system design module for freeform workpieces in computer- aided fixture design platform, Computer Aided Design, 104(1) (2018) 1-14. | ||
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