INTRODUCTION This paper describes the design and some initial evaluation of a prototype instrument for measuring roundness profiles of axially symmetric micro components with diameters below 500 μm. The instrument will measure form error in micro-scale cutting tools used for micro machining, small-hole metrology probes, and other high aspect ratio micro structures. The instrument will operate o...

Micro actuators for tiny robots could lead to revolutionary advances in many cutting-edge applications (e.g. minimally invasive medicine). Many prototypes were hence developed, which were powered either by micro organism, by onboard mechatronic systems or by remote magnetic fields. This paper presents two evolving designs, aiming at fabricating micro actuators which can be selectively controlle...

Micro-expressions are rapid and involuntary facial expressions, which indicate the suppressed or concealed emotions. Recently, the research on automatic micro-expression (ME) spotting obtains increasing attention. ME spotting is a crucial step prior to further ME analysis tasks. The spotting results can be used as important cues to assist many other human oriented tasks and thus have many poten...

in this study, as for the re-casting, surface alloying and re-solidification layer of this alloys at the work piece level machining with wire electro discharge machining (wedm), changes of surface micro hardness with changes of operational parameters has been studied. therefore, study shows using surface alloying phenomena with the diffusion of wire material into the machined surface and select...

We have designed a micro parallel positioning platform with two translational motions and a rotational motion that can tilt through large angles. Combined with a laser source mounted on its own slide, the platform can be used to produce fully three-dimensional micro-scale components. We investigate the kinematics, workspace, Jacobian matrix, and singularities of this parallel mechanism, and ana...

The paper describes micro structural observation (LM and SEM), which has been made on quick-stop sectioned samples of the chip formation, either on metals (high-speed steels) and Ti3SiC2 ceramic. All milling tests were carried out using a “quick-stop” method developed by the authors. For micro structural analysis samples were prepared by standard metallographic technique and examined with a lig...

This paper is organized to provide the novel approaches during the design of a machine to shorten the laser cutting process. Macro-micro manipulation concept is employed for the design of this machine both in the mechanical design and in devising the trajectory planning algorithm. Micro-mechanism design along with its calibration process are also explained since they involve novel approaches in...