Electrical discharge machining process, is one of the most widely used methods for machining, the electrically conductive parts. In this way the tool is not in contact with the workpiece and the hardness of workpiece does not affect the machining speed. In Electrical Discharge Machining process, selection of the correct machining parameters are effective in final cost and the quality of the pro...

A compufer software has been developed for the analysis and design of fixtures. This software can lead the designer to the optimal design of the fixturing system , which minimizes the total work done on the workpiece, the fixturing force, rhe deformation index, or the maximum effective stress. The workpiece is modeled as a j linear isotropic elastic solid. The machining forces are simulated by ...

Given proprieties of tool-workpiece materials, the experimental model of milling stress measurement is set as boundary condition for finite element analysis during milling process. The residual stress is the main reason of workpiece deformation. It is analyzed and computed using the finite element method. The idea of living and dead element is employed to model the material removal process whil...

An experimental study of the effect of fixtureworkpiece conformability on system static stability is presented. Conformability is defined as the geometric similarity between the workpiece and the smallest polyhedron fit over all fixture-workpiece contacts. Two metrics, C1 and C2, are introduced to quantify global and local conformability, respectively. The elastic displacement of the workpiece ...

This paper introduces a dynamic cutting force model for turning of slender workpieces, as well as experimental results related to the frequency response of the workpiece in turning. The model is based on a flexible workpiece and rigid machine tool, and a workpiece displacement dependent cutting force. The model is described and studied theoretically as well as experimentally. The experimental s...

Given a triangular mesh defining the geometry of a 3D workpiece filled with water, we propose an algorithm to test whether, for an arbitrary given axis, the workpiece will be completely drained under gravity when the rotation axis is set parallel to the ground and the workpiece is rotated around the axis. Observing that all water traps contain a concave vertex, we solve our problem by construct...

Additive Manufacturing presents unique advantages over traditional manufacturing processes and has the potential to accelerate technical advancement across multiple sectors, permitting far greater freedom in design than conventional manufacturing. However, one barrier which blocks wide adoption is residual stresses, could seriously affect materials’ behaviour during after production. Selective ...

In addition to the bulk properties of a workpiece material, characteristics of the tribofilms formed as a result of workpiece material mass transfer to the friction surface play a significant role in friction control. This is especially true in cutting of hardened materials, where it is very difficult to use liquid based lubricants. To better understand wear performance and the formation of ben...

The conventional point-kinematic model of fixtures has only treated point geometry of the contacts between locators and workpiece. However, this model, which ignores the underlying surface properties of the locators-plus-workpiece system, is inherently incapable of capturing the effects of the geometric properties important to accurate positioning of the workpiece. In this paper, we present a f...