Present work deals with the accuracy of manufacturing machines and the possibility of regular diagnostic of machining centers in order to improve the quality and productivity of machining process of a CNC MCV-400 machine usingLaser calibration and Ballbar tests with the help of Renishaw equipment.The accuracy of machine tools is a critical factor that affects the quality of manufactured product...

We consider two stage estimation with a non-parametric first stage and a generalized method of moments second stage, in a simpler setting than [CCD16]. We give an alternative proof of the theorem given in Chernozhukov et al. [CCD16] that orthogonal second stage moments, sample splitting and n-consistency of the first stage, imply √ n-consistency and asymptotic normality of second stage estimate...

In this paper, a mixed-integer linearized programming (MINLP) model is presented to design a group layout (GL) of a cellular manufacturing system (CMS) in a dynamic environment with considering production planning (PP) decisions. This model incorporates with an extensive coverage of important manufacturing features used in the design of CMSs. There are also some features that make the presented...

machine harvesting of legumes in iran is not being done due to unsuitable variety of the plant, lack of farmers' technical knowledge and farms of small scale sizes.currently the plant is harvested by hand and carried to the thresher: yet application of these threshers is not common; they are few in number, and not very suitable for iran. this presentation shows the design and construction ...