By Qingsong Xu
An leading edge and well timed consultant to the modeling, layout and implementation of large-range compliant micropositioning structures in line with flexure hinges - gains cutting edge compact mechanism designs for large-range translational and rotational positioning- presents unique and concise remedy of varied flexure hinges with well-presented layout and keep an eye on tools- specializes in layout implementation and applications via targeted examples. Read more...
summary: An leading edge and well timed consultant to the modeling, layout and implementation of large-range compliant micropositioning platforms in accordance with flexure hinges - positive factors cutting edge compact mechanism designs for large-range translational and rotational positioning- offers unique and concise remedy of varied flexure hinges with well-presented layout and keep watch over tools- makes a speciality of layout implementation and functions via special examples
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Additional info for Design and Implementation of Large-Range Compliant Micropositioning Systems
Taking into account the bending deformations only, the stiffness model of the XY stage is simplified as shown in Fig. 6. The stiffness K of each MCPF can be computed by considering N = 2 in Eq. 11): K= Ebh3 . 6) Then, the stiffness of the XY stage observed at the input end can be computed as Kin = 6K = 3Ebh3 . 6 4K Stiffness model of the XY flexure stage. Design and Implementation of Large-Range Compliant Micropositioning Systems 52 Given the predefined maximum one-sided displacement Dmax of the stage in one axial direction, the required driving force from the motor can be expressed as Fmax = Kin Dmax .
21), and three constraints are taken into account during the optimization. 22) where the two-sided stroke xmax is determined by Eq. 13). The second constraint arises from the stiffness requirement of the stage. Due to the large motion-range requirement, the stage will be driven by a VCM. 6 N), the stage should be sufficiently compliant so that the VCM is able to drive it. The overall stiffness of the stage can be calculated below by substituting N = 3 into Eq. 23) which is derived by taking into account that the two MCPFs are connected in parallel.
11) = = Δx 2N????x Nl3 Similarly, in consideration of Eqs. 8), the maximum one-sided translation of the MCPF can be derived: K MCPF = Fmax N????max l2 = . 12) 3Eh K MCPF By comparing Eq. 12) with Eq. 9), it can be deduced that the maximum translation of the MCPF is enlarged N times with respect to the ordinary CPF using flexures with the same material (????max ∕E) and physical (l and h) parameters. 1 (b) A MCPF with three basic modules (N = 3). Design of a Large-Range Flexure Stage Mechanism Design Based on the idea of MCPF, a uniaxial flexure stage can be designed to achieve a large pure translational motion.
Design and Implementation of Large-Range Compliant Micropositioning Systems by Qingsong Xu