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A model for synthesis of the fixturing configuration in pin-array type flexible machining fixtures |
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| Authors: | Jose F Hurtado Shreyes N Melkote |
| Affiliation: | 1. Applied Mathematics and Plasma Physics, T-5, Los Alamos National Laboratory, MS B284, Los Alamos, NM 87545, USA;2. University of Houston, Department of Mathematics, 641 PGH, Houston, TX 77204, USA;3. Methods and Algorithms, XCP-4, Los Alamos National Laboratory, MS F644, Los Alamos, NM 87545, USA;1. Automation Systems Group, WMG, University of Warwick, CV4 7AL, Coventry, West Midlands, UK;2. Mechanical Engineering, University of Sheffield, South Yorkshire, S10 2TN;3. HSSMI, Marsh Way, Rainham, RM13 8EU |
| Abstract: | This paper presents a model for the synthesis of the fixturing configuration in pin-array type flexible machining fixtures. These fixtures possess an array of pins that hold parts by conforming to their shape. The proposed algorithm aims to achieve a specified level of fixture–workpiece conformability and stable equilibrium while keeping the workpiece rigid body motion due to fixture elastic deformation at or below a user-specified value. Specifically, the model finds the minimum clamping loads and the optimal number, position and dimensions of the pins necessary to achieve the conformability and stiffness goals for a workpiece having an arbitrary geometry and subjected to quasi-static machining/assembly forces. Experimental data for the X-clamp® flexible pin-array vise is used to validate the proposed synthesis model. |
| Keywords: | Modeling Synthesis Flexible fixtures Pin-array fixtures |
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