Projeto CHRONOS - desenvolvimento e aplicação de um sistema de freios automotivo

The automobilist Market is more competitive each day, with new products developed by great technological innovations, daily challenging new concepts of Engineering. This monograph aims to explain the development of a brake system project completely, with emphasis on preliminary calculations made from a worksheet in Excel, for a better understanding of the components, which can be improved further in order to achieve the goals of company. It is through the preliminary calculations that we can have a reasonable first system estimate. The whole set is then analyzed for performance, cost and mass by competitors benchmarking. In terms of confidentiality, all data is fictional, but viable. The motivation for this study is approach an extracurricular topic, which essence is designing, base of engineering. The results obtained in software and field tests prove the validity of the study and assist in the continuous improvement of product development

Avaliação do gerenciamento e disposição final dos resíduos químicos de laboratórios do IGCE, UNESP - Rio Claro/SP

Laboratory of Chemical Waste Management programs are being implemented in various universities of the country and the world, in recognition of the urgent need to change the reality of disregard for the environment, together with objective responsibility of the generator, and especially the awareness of sustainability. Analysis and research laboratories involve a range of waste in developing their studies with intrinsic characteristics related to their form of generation. The amount of waste generated in this segment is negligible compared to industrial activities, but the environmental issue is that these residues do not have a standard technique for treatment due to the potential variation of its composition. This research project, aiming their suitability and continuous improvement, aims to diagnose and analyze the current situation of the management and disposal of chemical waste generated by the laboratories IGCE UNESP, Campus Rio Claro / SP. Universities, through their research, teaching and extension, end up generating potentially hazardous chemicals that may contaminate the environment when they are disposed of improperly, with no concern for the environment and / or public health. Aiming to assist in improvements with respect to this issue, the purpose of this study is to understand the management and disposal of chemical waste from the IGCE, laboratories UNESP - Rio Claro / SP, in order to discuss the situation of such waste, and present proposals to reduce generation of the same and minimizing the environmental impact, thereby increasing the local hygiene through proper disposal. The research instrument used interviews, questionnaires, review of recent literature and observations were made in order to develop proposals for the management and disposal of waste. These proposals based on prevention and corrective control, where the preventive approach aims at lifting techniques and actions to reduce the generating sources and...

Estudo da tecnologia RFID e sua aplicação na gestão de estoques

Due to the need of more agility, dynamism and reliability in stock management, the market has turned its attention to RFID, which offers a practical solution and live up to the big corporations' expectations. The search for continuous improvement establishes a direct link with RFID, for its technology offers accurate real time information in any monitored given place. RFID is a radio frequency communication technology. A reader communicates to a tag through waves. This tag can be active, with a battery, or passive, in which its power is supplied by currents induced by the field variation it is exposed to. The RFID technology has a well defined basic principle, but there are many constructive ways of implementing it. The adaptability as well as the flexibility regard to the several kinds of stock in industry, reaching their particular needs. RFID can lower maintenance costs in stock by collecting data more accurately, lowering human error and optimizing the item handling at its reception, exit and while it is inside the company. This paper presents an example of RFID technology applied in a company's stock management. It is possible to prove that there are, in fact, great advantages in implementing this technology, as it creates the opportunity for continuous improvement in stock management, with better application of material, labour and quality tools, since the data collected through an automatized process using RFID are more reliable and dynamic

Pesquisa-ação sobre o uso de indicadores de desempenho do equipamento em uma fábrica de geradores

In the industrial environment the challenge is use better the productive resources: people and machine. The following work has the main goal improve the efficient losses analysis in the stator bar’s production bottleneck equipment situated in the Electric generator’s factory. The action research involved Theory of Constraints on the restriction system identification and developed the data collection framework by losses typology for indicator measurement. The research showed the data collection standardization importance to obtain reliable data and strategic efficiency indicator to optimize equipments. Besides of this, OEE and TEEP indicator demonstrated efficiency results to analyze the actual efficiency when the machine works and the increase capacity opportunity to treat the hide costs in the organization following the continuous improvement

O Sistema de Gestão Ambiental e sua contribuição socioambiental para a biblioteca central da UNESP, Campus Rio Claro/SP

The minimization and mitigation of environmental impacts caused by the activities of organizations is increasingly becoming a key concern due to factors such as market demand, including suppliers and consumer markets, quality standards and even marketing strategies. The implementation of an EMS - Environmental Management System - allows the organization to achieve the level of environmental performance for its determined and promotes continuous improvement over time. This system consists of a schedule of activities, so as to eliminate or minimize impacts to the environment through preventive actions. It also provides a structured approach to set and achieve goals and objectives, and to establish procedures, work instructions and control, ensuring that the implementation of the policy can become reality. The objective of this work consists in planning a system using environmental management based on the ISO 14001 - standard internationally more widespread and accepted in the requirements to establish and operate an EMS - the Central Library, UNESP, Rio Claro / SP to stimulate the quest for continuous improvement and sustainability in the educational institution. For making the diagnosis of this planning was used the PDCA methodology, suggested by the standard, as well as all requirements for compliance. The results show that the benefits that the organization will receive involve reducing expenses and cost of energy and water, and improve the organization's reputation before the whole university and other educational institutions, reaching about three thousand people on university

Proposta de um processo de categorização de fornecedores para a execução de projetos

Nowadays, in business environment, organizations seek to differentiate through special programs and plans, taking the concepts of sustainability, performance and benefits generated for society. Based in this competitive environment, as companies depend on the use of subcontractors to perform services for your different customers, the work performed by them is directly related to the vision created by the final customer’s vision of the company responsible for the project. Considering that the supplier hired to execute the project does not share the strategic concepts related to the level of services to be offered to the final customers, thus creating the need to develop methods that enable the alignment between the project owner, responsible for preparing the executive project, and the supplier, responsible for the execution of the work. Tangent to this need, it was necessary to create a method of evaluation and categorization for suppliers to hired for the projects. As a result it has been proposed a process of categorization of suppliers, through the restriction of possible companies to be hired for a project designed to promote alignment between strategies and continuous improvement of the solutions offered to the market

Melhoria da qualidade de um processo de usinagem utilizando as técnicas de avaliação de Taguchi

Delivering to the customers a product or service with the expected quality associated to the huge competitiveness that exists in the market nowadays, has been making organizations increasingly focus on quality planning using techniques which are directed towards the continuous improvement process and production optimization. Thus, this paper aims to improve a machining process using the techniques of experimental design to the optimization and this also includes the analysis of the measurement system. For this purpose, the alloy Nimonic 80A, a nickel base superalloy, was used in the process due to its widespread use for high temperatures, applying this study the robust method proposed by Genichi Taguchi, determining the influence of the factors considered input variables, cutting speed, feed rate, depth of cut, type of tool, lubrication, and material hardness, in the output or response variable, surface roughness, concluding with the use of Taguchi orthogonal array L16 and by analysis of ANOVA that the factor feed rate is significant and offers greater effect on the response variable studied, should be set to 0,12mm/rev. Moreover, the factor type of tool has more influence on the process when compared to other factors, being CP250 the one more suitable to the process. Lastly, the interaction feed rate x cutting speed provides greater significance in the process regarding to surface roughness variable, being the best match between them 0,12mm/rev to the feed rate and 90m/min to the cutting speed. In order to evaluate the measurement system, it was applied the repeatability and reproducibility method (R&R), through which we saw that the system needs improvement (R & R = 88.04% >>> 30%) as the value found in the study was well above compared to the one that classifies the system as inappropriate

Redução do tempo de setup de máquinas de usinagem em uma industria automobilística

Continuous improvement of industrial processes is one way to become companies more competitive in the market. For this, a fairly widespread use is the methodology of lean production systems, by eliminating waste. One of the tools of these systems is the method of rapid exchange of die or also called SMED, which will be applied in this study. The study aims to develop proposals for reducing the time of set up of two machines in two machining lines, watching also the ergonomics and safety conditions in this operations. The set up time reduction is justified among others, due to increase the machine productivity. In applying the connecting rod machining line, there were two types of exchange. Reductions in time to set up proposals reached values of 47% to one of them, and 55% to the other. It is important to underline that to reach this result, there was no need for large investments. In the application in block machining line, was developed an improvement in the ergonomic area. It was placed a pulley block that came to increase the time of tool change. Aiming to improve the security of the exchange, without productivity loss, the method was applied to reduce this time. It was developed two proposals.: the first would reduce that time by 19%, and does not require many resources of the company. The second involves the parallelization of the exchange, so that the reduction is 48%. However, this proposal requires one more manpower at the time of exchange and it is not always possible

Utilização de técnicas de planejamento de experimentos na análise de viabilidade de alterações no processo de pintura de grades Antracite em uma indústria automotiva

The search for better performance and competitive advantage in the current market scenario has made organizations keep their focus on quality planning and the use of effective techniques aimed at continuous improvement and optimization of processes and resources. The situation is not different for the painting process in the automotive industry, which has a significant amount of variables and influential external factors. This work, developed at General Motors in São José dos Campos, aims to analyze the feasibility of changing the painting process of the pickup S10 railings in the Antracite color located in the main line to the another line located in a Painting Repair Booth at the plant and, therefore, to study the possibility about reducing the window of cure for Antracite’s enamel by using Design of Experiments’ techniques. Applying this method is possible to find the best arrangement among studied factors of Painting Repair Booth that are, in this case, the Temperature, in Celsius degrees, and Skid’s Steps, in seconds, and it’s also possible to get their behavior according to quality requirements specified by GM rules for the Brightness and Paint Adhesion on the part. As a result, it can conclude that is possible to paint the S10 Antracite railings in the painting process’ line of Painting Repair Booth, and with the new configuration obtained by the Design of Experiments for the process variables, there are significant gains related to the parts’ quality, costs reduction and the optimization of production capacity, much in the main line as in the line of the Painting Repair Booth

Implementação da metodologia lean manufacturing em uma linha de produção por meio de certificação interna

To the companies maintain competitive in the market, they need continuous improvement in quality and productivity. This continuous improvement can be achieved through lean manufacturing tools. The idea of lean manufacturing is to map the flow to identify the processes that don’t add value in the final product, according the customer specification, in others words is eliminate or reduce the waste on the production flow. However the implementation of lean manufacturing is not so simple and involves the resistance of the employees, lack of training and the lack of knowledge to make the implementation. The objective of this study is determinate the good practices and difficulties found by a multinational company in the field of healthy that aims implementing the Lean Manufaturing through an internal certification. The methodology used to approach the problem is a case of study that analyzes the information introduced through discussion made by a semi structured interview. The case study describes the steps to get the certification, involving the concepts of 5S, balancing, standardization and routine management. The literature and the study case showed that the good practices, such as productivity increases, safety level increases and the machine stability were accomplished, but the majority difficulties was found in cultural factors and planning. Some recommendations were proposed to the others companies, such as the elaboration of a qualification matrix and the review of the activities chronogram during the implementation. The way that the company found to implement Lean Manufacturing concepts was a creative method to show to everybody the objective and the target to be accomplished and is one way to recognize the effort through the certification

Um modelo de avaliação interna para a melhoria de processos pedagógicos e administrativo: aplicação em uma faculdade de tecnologia

Pós-graduação em Engenharia Mecânica - FEG

Implantação do sistema kanban para elementos de fixação em maquinas de movimentação de terra

Always seeking the maximum profit under the reduced production time and lower number of failures, companies are increasingly evolving and going after continuous improvement in order to remain competitive in the market. Thus, increasingly there is investment in the management system Lean manufacturing. Lean system is very important, because through it, the maximum value is added in the final product. Being measured by the efficiency and reducing failures to zero. In the studied company, Lean manufacturing system came into effect through the kanban system for purchasing, control and distribution of bulk material used in the assembly of the final product, which are earth-moving machines. It is very important to check the great change made in the company with the implementation of kanban. All inventory management becomes visual, elements are arranged in an organized manner, with addresses in structures, calculated in special boxes and finally, assemblers have the guarantee of an item supply, with the distribution cars located on their assembly area. This study participates effectively assuring the supply. Avoiding any failure on the lack of material, non-compliance of delivery times to the customer and maintenance of over-stock or obsolete inventory, in which case both cause financial loss to the company

Propostas e rumos do desenvolvimento econômico brasileiro: novo modelo de desenvolvimento econômico e nova matriz macroeconômica

The main goal of this monograph is to understand the questions regarding brazillian economic development during the last thirty years. Through a historic deductive method, like simple techniques of descriptive statistics, we explicit the evolution process in which brazil has taken part in this last years. However, recently, by choosing non-conventional paths, represented basically by some aspects of the heterodox theory, the conservation of this process showed itself faulty. The defense for a return of the traditional ways employed in political economy just like in strategies of development are essential for the a continuous improvement of the brazillian population' life conditions

Práticas de gestão da melhoria contínua e aprendizado e suas contribuições para a capacidade de inovação na indústria de construção naval do Brasil

After years of stagnation, the naval construction industry in Brazil has been experiencing a period of recovery caused by investments in the oil and gas sector and the implementation of governmental programs that aimed to regenerate it. However, efforts in learning and innovations are needed in order to reinsert the country in this activity and achieve international levels of competitiveness. Based on literature about learning processes and continuous improvement practices and their impact in the innovative and productive processes, this paper aims to identify the main tendencies, mechanisms and procedures to improve the construction and management processes in the Brazilian naval construction industry. The methodology used for the data analysis classifies obtained information from magazines and annals of congresses of the sector, according to the established analysis categories (phenomena). Such categories study information related to the productive and technological processes of the industry, the main internal and external relations of the industrial park, the management of resources and processes, policies, investments, etc. The data was collected in the period 2004-2010, and more than 500 registers that show a dominance of the investment phenomenon, especially in the increase of productive capacity, were catalogued. In addition to this, there is evidence of modernization in the manufacturing plan and the equipment, diverse forms of cooperation, implementation of human resources management practices and engineering or processes and products. Hence, a process of catching up governs and is guided by modernization and increase training in this industry.

Análise comparativa do uso de ferramentas de metal duro sem revestimento e revestidas com diboreto de titânio na usinagem da madeira

Pós-graduação em Engenharia Mecânica - FEB