Marcelo Fajardo-Pruna

Escuela Superior Politecnica del Litoral · Facultad de Ingeniería en Mecánica y Ciencias de la Producción

In response to the increasing need for enhanced occupational safety in cold storage facilities, this study presents the design and validation of a mechatronic time control device specifically developed for monitoring the exposure times of warehouse operators in a multinational company. Over the past two decades, Ecuador has significantly increased...

This article presents the development of an autonomous navigation system for the intelligent sailboat Sensailor. This vehicle will be equipped with a Lidar and a camera for obstacle recognition. The recollected data will allow the sailboat to register the obstacle coordinates and determine the zones for safe navigation. Based on that, the intellige...

In search of an alternative to micro-milling, a new micromachining technology based on the principles of single-edge cutting has been successfully developed. To have full control of the cutting process, an artificial vision system has been developed, which is able to locate the tip of the cutting tool and thus calculate the forces that develop alon...

The fourth industrial revolution requires the process equipment to work together through the strategy of cyber-physical systems. This project aims to contribute to this revolution by presenting a tool and methodology for creating cyber-physical systems. A V-model was used for the design process, in which the digital twin of a 3PRS+XY+C machine tool...

This paper presents a new concept called the urban vortex system (UVS). The UVS couples a vortex generator (V.G.) that produces updraft by artificial vortex and a vortex stability zone (VSZ) consisting of an assembly of four buildings acting as a chimney. Through this system, a stable, upward vortex flow can be generated. The Reynolds Averaged Navi...

The current work presents the first results when aiming to create a digital twin of a single edge micro cutting machine tool in a collaborative cloud-based PLM platform. As starting point, this work takes the models created during the development and design phase of the machine tool, which date back to ongoing works that started three years ago. In...

This paper presents a novel micro machining process as an alternative to other micro machining processes like micro milling. Its main advantage is the simplicity of the cutting tool geometry compared to other complex micro tools. The basis of this process consists of keeping the cutting tool always tangent to its trajectory. To achieve this goal, a...

This thesis presents a novel micro-machining process in which a single-edge tool is able to cut chip sections of a micrometric range with a proper chip formation. The basis of this process consists in the translation and orientation of the cutting tool tangent to its trajectory. To achieve this goal an innovative 6 degrees of freedom parallel machi...

In the current meso cutting technology industry, the demand for more advanced, accurate and cheaper devices capable of creating a wide range surfaces and geometries is rising. To fulfill this demand, an alternative single point cutting device with 6 degrees of freedom (6DOF) was developed. Its main advantage compared to milling has been the need fo...

This paper proposes an innovative single point cutting device that requires less maintenance than traditional micro-milling machines, being the cutting tools required simpler easier to develop. This satisfies the market demands on micro manufacturing, where devices must be more accurate and cheaper, able to create a diverse range of shapes and geom...

The paper focuses on the design, simulation and validation of a racing suspension system which consists of analyzing the behavior of the unsprung mass in two configurations with light-weight materials as Aluminum 7075 or forged and carbon fiber special in stub, rim, suspension arm; in addition, their manufacturing and cost processes have been taken...

Los datos de texto se preprocesan para extraer palabras significativas utilizando funciones de filtrado de alto nivel. El texto se divide de forma automática en palabras mediante un algoritmo de tokenización lo cual permite enfocarse en las palabras más significativas. Posteriormente, se convierte el texto tokenizado en una forma numérica utilizand...

This work presents the development of of a machine tool to be used in a single point microcutting process. This machine tool is composed by a 3-PRS parallel mechanismtha positions the cutting tool in the Euler angles α ,β and the Cartesian Z position. Since to define a point P into space completely is necesary provide its 6 variables Px, Py, Pz, α,...

The current advances when creating micro technology demand that the machining tool market evolves in order to develop devices capable of achieving parts that require high precision for smaller dimensions, in order to compete with the current technologies available, the machine in this paper its presented. Current technology for machining micro par...

In this poster the behavior of a single-point cutting tool in a new micro-machining process is presented (Figure 1). A serial-parallel machine tool composed by a 3-PRS mechanism and a linear XY-Table is used. The serial-parallel mechanism positions the tool tip in the workspace, P = [x, y, z, α, β, γ] T ; the 3-PRS mechanism positions the tool in Z...

In this paper, the behavior of a single-point cutting tool in a new micro-machining process is presented. A serial-parallel machine tool composed of a 3-PRS mechanism and a linear XY table is used. The serial-parallel mechanism positions the tooltip in the workspace P = [x, y, z, α, β, γ]T; the 3-PRS mechanism positions the tool in Z and the rotati...

Micromachining is a process that produces pieces of small dimensions by different processes that allow progressively remove material to get the desired shape in the workpiece. Micromachining processes have been extensively studied but these present several challenges that must be overcome and that have slowed the expansion of these processes like t...

One of the main difficulties presented by the parallel mechanisms is that the kinematic and dynamic analysis is more complex than serial mechanisms. In this paper, the inverse kinematic analysis for a machine tool in a micromachining process with a single point cutting tool is presented. Parallel mechanisms are a solution that has been studied in r...

Telecommunications equipments to be used in the High Altitude Platform (PGA) are exposed to environmental conditions specific of their operation altitude. These equipments must resist low temperatures and low pressures when are functioning, therefore is necessary the design and construction of a chamber for simulating environmental conditions at 70...

El presente proyecto de titulación contempla el diseño y construcción de una cámara para simular condiciones ambientales a 7000 m.s.n.m., destinada a evaluar el comportamiento de equipos de telecomunicaciones a utilizarse en la plataforma de gran altitud (PGA), dentro del Convenio Macro de Cooperación FAE-EPN. Se determina en primer lugar los parám...