Nowadays, many companies attempt to adapt their production planning and strategy to make order fulfillment more flexible. In manufacturing, the capacity and capability constraints are key factors which need efficient production planning for controlling service level and minimizing inventory cost. This thesis focuses on looking for the economic and efficient strategies for Capability to Promise or CTP handling. This strategy is proposed to work for Low Volume/High Mixed product manufacturing. Moreover, SAP is used as Enterprise Resource Planning (ERP) system for steering the CTP handling strategies in order to increase automated order handling regarding cost efficiency. The results of this research are both concepts and implementations on how to set CTP handling by using SAP, regarding the demand uncertainty environment in Make to Order (MTO) fulfillment.

Este estudo de caso realizado em indústria de equipamentos industriais sob encomenda pretende abordar aspectos relacionados à tomada de decisões sobre seqüenciamento da produção no nível do chão-de-fábrica. Por meio de observações e entrevistas com os agentes das programações de entrada de ordens nos centros de trabalho procurar-se-á mostrar como a empresa estudada realiza o controle e programação da produção e mostrar o ambiente para a aplicação de uma proposta de gerenciamento de tempo de fila. Será também apresentada uma revisão bibliográfica sobre as principais técnicas de gerenciamento de fluxo de materiais em processo nos diferentes sistemas de administração da produção. / This case study conducted in a make-to-order industry aims to address issues related to making decisions on the sequencing of the production level of the shop-floor. Through observations and interviews with officials of programming input orders at the job search will show how the company study the control and scheduling and show the environment for the implementation of a proposal for management of time queue. It will also be presented with a literature review on the main techniques for managing the flow of materials in the process of administration in the different systems of production.

Este estudo de caso realizado em indústria de equipamentos industriais sob encomenda pretende abordar aspectos relacionados à tomada de decisões sobre seqüenciamento da produção no nível do chão-de-fábrica. Por meio de observações e entrevistas com os agentes das programações de entrada de ordens nos centros de trabalho procurar-se-á mostrar como a empresa estudada realiza o controle e programação da produção e mostrar o ambiente para a aplicação de uma proposta de gerenciamento de tempo de fila. Será também apresentada uma revisão bibliográfica sobre as principais técnicas de gerenciamento de fluxo de materiais em processo nos diferentes sistemas de administração da produção. / This case study conducted in a make-to-order industry aims to address issues related to making decisions on the sequencing of the production level of the shop-floor. Through observations and interviews with officials of programming input orders at the job search will show how the company study the control and scheduling and show the environment for the implementation of a proposal for management of time queue. It will also be presented with a literature review on the main techniques for managing the flow of materials in the process of administration in the different systems of production.

A high level of competition in the food industry, specifically in the Middle East and the UK has forced companies to improve their processes by reducing lead time, waste, and costs and increasing production efficiency. The main challenge to the achievement of the process improvement objectives is the high level of process variability. Therefore, this research investigates the different types of variability in food production system and proposes a methodology to reduce the effect variability in food production system. The variability can be caused by several factors, for instance, in biscuit production lines variability can be induced due to short breakdown and long breakdown, variable processing times, variable temperature, etc. The proposed approach addresses process time variability issues associated with both make-to-stock (MTS) and make-to-order (MTO) manufacturing environments using an iterated approach. The proposed methodology integrates process mapping, (which is a lean tool for identifying value added and non-value added activities), discrete event simulation (to mirror the real production line), Taguchi orthogonal arrays (to generate different scenarios in order to investigate the effect of variability on the simulation model), correlation analysis (to identify the highest variability factors), and the rule based system (to improve food production system performance based on identified key performance indicators (KPIs)). The research uses a biscuit production line as a case study to validate the proposed methodology. The application of the proposed approach determines that the highest effected KPI is %working. The results showed that after implementation of the rule-based system, key performance improved in high variable areas. Results analysis based on before scenario shows that %working performance indicator is highly effected by variable temperature, speed, and breakdown factors for high variable areas such as baking, cooling, aligning, and packing. Based on identified factors and high variable areas, rules are developed by applying standardisation setting (SOP, WI, PP) in high variable areas and the results shows %working improved in baking by 4.78%, in cooling by 16.06%, in aligning by 0.35%, in packing machine1 by 2.5%, in packing machine2 by 2.37%, in packaging1 by 3.35%, and in packaging2 by 3.16%. The integrated method allow quick response , control the environment without production interruption, reduce number of experiments , and reducing variability in high variable areas, which narrowed the improvement in the required areas and increased its effectiveness.

El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado. / The contribution of the metalworking sector to the gross domestic product is decreased by 8.6% in the 2017–2018 period because of problems such as high rejection rates, lead times, and raw material losses. Consequently, the sector’s production was reduced by PEN 1,200,000 while demand remained flat. Thus, this article proposes a production control model using 5S, Single-Minute Exchange of Dies, and tools such as Kanban and Constant Work-in-Progress (CONWIP) to increase the productivity of a sand casting line in a Peruvian metalworking enterprise that manufactures parts for mining on request. The improvement proposal involves the implementation of lean manufacturing tools and analyzes low productivity effects. The problems identified are typical of the Peruvian metalworking sector; thus, this study may contribute to finding possible solutions for issues faced by other enterprises. / Revisión por pares

Introduktion: Små till medelstora företag (SME) innefattar 99.9% av alla aktiva verksamheter i Sverige. SME:s är företag som har begränsade ekonomiska resurser. Begränsade resurser kan leda till att verksamheter producerar produkter till lager i rädslan om att gå miste om leveranser, vilket skapar ett uppbundet kapital i färdigvarulagret. Syftet med studien är att undersöka om make to order (MTO) kan användas av SME:s för att reducera kapitalbindning i färdigvarulagret och undersöka vilka utmaningar det finns med att implementera MTO.  FF1: Hur kan MTO användas som ett verktyg för att reducera kapitalbindningen hos SME:s? FF2: Vilka utmaningar finns det med att implementera MTO för SME:s?  Metod: En fallstudie har genomförts hos ett producerande mikroföretag. Data har samlats in genom observationer, intervjuer och dokument. För grund till den teoretiska referensramen har en litteraturstudie genomförts. Litteraturstudien samlade in data genom vetenskapliga artiklar och böcker som har använts för att analyser den insamlade empirin från fallstudien.   Resultat: Studiens resultat har kommit fram till att MTO kan användas som ett verktyg hos SME:s som har en hög kapitalbindning och inte kan utesluta ett färdigvarulager. För att reducera kapitalbindningen kan därmed en hybrid mellan MTO och MTS (make to stock) användas. Studien har ytterligare kommit fram till att det finns tre huvud utmaningar med att implementera MTO. De tre utmaningarna är ställtider, oförutsägbara händelser och förändringar.