https://escholarship.org/content/qt8rf718jm/qt8rf718jm.pdf?t=krnesf

Recent Advances in Mechanical Micromachining

The miniaturization of machine components is perceived by many as a requirement for the future technological development of a broad spectrum of products. Miniature components can provide smaller footprints, lower power consumption and higher heat transfer, since their surface-to-volume ratio is very high. To create these components, micro-meso-scale fabrication using miniaturized mechanical material removal processes has a unique advantage in creating 3D components using a variety of engineering materials. The motivation for micro-mechanical cutting stems from the translation of the knowledge obtained from the macro-machining domain to the micro-domain. However, there are challenges and limitations to micro-machining, and simple scaling cannot be used to model the phenomena of micro-machining operations. This paper surveys the current efforts in mechanical micro-machining research and applications, especially for micro-milling operations, and suggests areas from macro-machining that should be examined and researched for application to the improvement of micro-machining processes.

Investigation of micro-cutting operations

Recent advances in modelling of metal machining processes

Virtual machine tool

This paper provides a comprehensive review of the literature, mostly of the last 10-15 years, that is enhancing our understanding of the mechanics of the rapidly growing field of micromachining. The paper focuses on the mechanics of the process, discussing both experimental and modeling studies, and includes some work that, while not directly focused on micromachining, provides important insights to the field. Experimental work includes the size effect and minimum chip thickness effect, elastic-plastic deformation, and microstructure effects in micromachining. Modeling studies include molecular dynamics methods, finite element methods, mechanistic modeling work, and the emerging field of multiscale modeling. Some comments on future needs and directions are also offered.

/pdf/the-mechanics-of-machining-at-the-microscale-assessment-of-9kfioocc84.pdf

The Mechanics of Machining at the Microscale: Assessment of the Current State of the Science

Micro-Cutting of Steel to Meet New Requirements in Miniaturization

Investigation of surface near residual stress states after micro-cutting by finite element simulation

The use of topology optimization is helpful to obtain "systematic and proper" solution variants for a given static and dynamic design problem. Those solutions, which can be generated automatically provide the designer with new, previously unknown proposals of machine part structures. Up to now, the static and dynamic behaviour of the workspace was not recognized in such an optimization. The paper introduces the topology optimization of machine tools applying the finite element method (FEM) coupled with the multi-body simulation (MBS). So parts of machine tools can be optimized while taking different critical workspace positions into account. Furthermore changes of the loads and the system behavior can be considered during the optimization process.

Structural Optimization of Machine Tools including the static and dynamic Workspace Behavior

Innovative Machine Kinematics for Combined Handling and Machining of Three-Dimensional Curved Lightweight Extrusion Structures

In addition to the consumer goods, capital goods also offer a great potential for ecological and economic optimizations. In view of this fact the Project WiMonDi, started in September 1998, focuses to create a marketable Re-Use of modules and components of assembly systems by using modular design and organizationally closed distribution concepts. The objective of the project WiMonDi is to increase the usability and prolong the life span of assembly systems through the organized rebuilding of assembly facilities as well as the refurbishment and Re-Use of their components1. Therefore, it is necessary to develop organizational and methodical strategies and to initiate new distribution and user models between the supplier and user of assembly facilities to realize a workable Re-Use concept. WiMonDi is being conducted with tight cooperation between Industry and University.

http://www1.coe.neu.edu/~smgupta/4193-09-SPIE.PDF

H. Weule

Papers

Micro-Cutting of Steel to Meet New Requirements in Miniaturization

Investigation of surface near residual stress states after micro-cutting by finite element simulation

Structural Optimization of Machine Tools including the static and dynamic Workspace Behavior

Innovative Machine Kinematics for Combined Handling and Machining of Three-Dimensional Curved Lightweight Extrusion Structures

Reuse of assembly systems: a great ecological and economical potential for facility suppliers