Puesta en marcha de centro de maquinado vertical Bridgeport

This investigation shows the results obtained from the start-up of the vertical machining center with Fanuc numerical control using cutting tools of the YG brand that is located in the facilities of the Tecnológico Nacional de México Campus Ciudad Guzmán. In addition, the requirements that are required to operate a Computerized Numerical Control machine and the description of the fundamentals that contribute to this objective are described. The computer programs used to draw, program and simulate the machining of different parts are also shown. And the methodology used to determine the speed variables: angular, advance and penetration, cut per pass. The tools showed stability, durability and a good finish in the machining that was carried out in 2 and 2.5 axes.Esta investigación muestra los resultados obtenidos de la puesta en marcha del centro de maquinado vertical con control numérico Fanuc utilizando herramientas de corte de la marca YG que se encuentra ubicado en las instalaciones del Tecnológico Nacional de México Campus Ciudad Guzmán. Además, se describen los requisitos que se requieren para operar una máquina de Control Numérico Computarizado y la descripción de los fundamentos que contribuyen a este objetivo. También se muestran los programas de cómputo que se emplearon para dibujar, programar y simular el maquinado de distintas piezas. Y la metodología empleada para determinar las variables de velocidad: angular, de avance y penetración, corte por pasada. Las herramientas mostraron estabilidad, durabilidad y buen acabado en los maquinados que se realizaron en 2 y 2.5 ejes

Ecuaciones prácticas para resolver ejercicios de tiro parabólico

There will be an easy solution for solving fundamental problems of free-flight motion of a projectile? This is a basic question from which this paper starts. In this research five equations were obtained, that simply solves Two-Dimensional problems of free-flight motion of a projectile under a constant downward acceleration. Air Viscous Friction is not taken into account. These equations are obtained from the constant acceleration equations. Five problems of free-flight motion of a projectile were solved using those equations vs Classical Theory. Results show that there is a variation between them of 0.237%, which demonstrates the effectiveness of the proposed method.Esta investigación surge de la pregunta si habrá una forma directa de resolver ejercicios de tiro parabólico, el cual es un tema básico, pero, a la vez, complejo en cursos introductorios de física. Por esta razón, es importante conocer, comprender y analizar este tipo de fenómenos físicos. En este trabajo se obtuvo un conjunto de ecuaciones para resolver ejercicios de tiro parabólico en dos dimensiones de forma directa, para casos donde se considera una aceleración gravitacional constante y se desprecia la fuerza de rozamiento del aire. Estas ecuaciones son deducidas algebraicamente a partir de las ecuaciones generales del movimiento rectilíneo uniforme y uniformemente acelerado. Cinco tipos de ejercicios de tiro parabólico fueron resueltos empleando el método presentado en este trabajo y los métodos clásicos. Los resultados obtenidos muestran que la variación de su magnitud en todos los casos es menor a 0.372%, lo que demuestra la aceptable efectividad de la propuesta presentada

Impact of the Planning from the Kanban System on the Company’s Operating Benefits

This article reports a model regarding the structural equations of the impact of the planning phase and the benefits acquired in the implementation of the kanban system. It begins with a literature review of the activities of the planning phase, based on which a questionnaire was developed and applied in manufacturing companies in the state of Baja California, in the municipalities of Ensenada, Tijuana, Tecate, and Mexicali. The responses were obtained from 118 questionnaires and were validated by the Cronbach’s alpha index for internal validity and the R-squared index for predictive validity. A model of the structural equations of the planning phase was developed and validated through three latent variables, namely, human resources, preliminary analysis, and kanban integration, which correspond to 22 activities and one variable that integrate 11 operational benefits. The model shows six hypotheses to verify the causal relationships between these variables. Partial least-squares algorithms are used to validate the hypothesis, and the results indicate that the preliminary analysis is the basis for the success of the implementation of the kanban in the planning stage, through the application of activities, such as 5’s, value stream mapping (VSM), material handling, flow diagram, and visual aids with a sustainable approach, according to the efficient flow of materials and minimum downtime

Planning, Execution, and Control of Operations in SC Activities—Baja California Manufacturing Case Study

This paper reports a second order structural equation model (SEM) with four latent variables and six hypotheses to analyze the Planning, Execution, and Control of the information and communication technologies (ICT) implementation in supply chains (SC) and the operational Benefits obtained. The model is validated with information obtained from 80 responses to a questionnaire applied direct to manufacturing companies in Baja California state (Mexico), specifically in Ensenada, Mexicali, Tecate, and Tijuana municipalities. The variables are statistically validated using the Cronbach’s alpha index for internal and R-squared for predictive validity. Partial least squares algorithms are used to validate the model’s hypotheses in software WarpPLS version7.0 ScripWarp Systems, Laredo, TX, US. Findings indicate that the direct impact of Execution and Control is positive and therefore are the basis for successful integration of ICT and obtaining agility and flexibility benefits in the SC