Tutorials 

Monday 10th June 2024

euspen’s 2024 extensive tutorial programme will cover a range of key topics for the precision engineer

Whilst covering a clear technical curriculum, tutorials are less formal than a lecture; providing more personalised learning in a social atmosphere.
They incorporate existing challenges in the workplace which cover conceptual theories through to best practice applications.
These tutorials will take place on Monday 10th June 2024.

T1 FUNdaMENTALs of Precision Design
T2 Design and modeling of large-stroke flexure-based mechanisms

Tutorial 1: FUNdaMENTALs of Precision Design 

Monday 10th June 2024
Room: TBC
Time: TBC

The tutor is Prof. Alex Slocum, MIT, US

This tutorial provides a fast-paced hands-on introduction to rapid precision machine design based on FUNdaMENTAL principles including theory and best practices. Topics include: initial error allocation to enable rapid design, principles of accuracy, repeatability and resolution, bearings, structures, and actuators.  Kinematic and elastic averaging-based designs and the implications for bearing life and dynamic performance are stressed with F=kx and w = sqrt(k/m) as recurring themes throughout the design of a machine.  Examples will be presented to show how FUNdaMENTAL principles are critically important for an engineer to understand in order to be able to most effectively use modern design tools such as solid modelling and finite element analysis in the design of precision machines.

Learning outcomes: 

Attendees should expect to leave with new design tools (spreadsheets) they feel comfortable applying and a host of new design ideas for selecting and integrating bearings structures and actuators in precision machines.

Intended audience:

This tutorial should be helpful for those at the beginning of their careers and also for those who wish to tune up their design approach with linking design approaches with first order analysis to develop designs more rapidly and to check output from FEA.

Alexander Slocum is the Walter M. May and A. Hazel May Professor of Mechanical Engineering at MIT, a Fellow of ASPE and ASME, and a member of the National Academy of Engineering.   He has 145+ patents and has helped develop 11 products that have received R&D 100 awards for “one of the one hundred best new technical products of the year”.  He pioneered the deterministic design of kinematic couplings (www.kinematic couplings.org) including the standard for all semiconductor wafer transport carriers (SEMI E57-1296).  He has helped start several successful precision manufacturing equipment companies and has a passion for working with industry to solve real problems and identify fundamental research topics.

Tutorial 2: Design and modeling of large-stroke flexure-based mechanisms

Monday 10th June 2024
Room: TBC
Time: TBC

Flexure-based stages and mechanisms are applied in precision motion control and alignment tasks, spanning various fields like lithography, metrology instruments, mass balances, telescope mirror positioning, and medical devices. These mechanisms rely on material deformation for movement, providing benefits such as frictionless operation, minimal play, limited or no hysteresis, and motion unaffected by contaminants. Designing these flexure mechanisms involves considering parameters like volume, dynamics, lifetime, stresses in the flexural elements, range of travel, parasitic motion, rotation center shift, and load-bearing capability. Thus, a diverse range of design and analysis approaches is necessary to ensure functionality. This tutorial delves into the design considerations for large-stroke flexure hinges, providing practical, model-based guidelines.

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