Design For Manufacturing (Dfm) untuk Meminimasi Biaya Produksi dan Kualitas (Studi Kasus Pallet Box Fabrication Section PT Saptaindra Sejati)

PT. XYZ is manufacturing of automotive spare parts and non-automotive company, which produces several products such as Oil Seal, Tensioner, Gasket, Rubber Only and other products. To fulfill the commitment to the company, one of the ways is to eliminate waste in the production process in the company, is Rubber. From the rubber scrap, the largest percentage is Rubber chips expired. So related to the purpose of this research is to identify the presence of waste on the rubber, improvements in production planning and compare MRP, RCCP and CRP. The method that used in this research is the FTA (Fault Tree Analysis) and RCCP (Rough Cut Capacity Planning) with CPOF technique (Capacity Planning Overall Factors). The result is able to minimize the rubber chip is wasted due to past the shelf (expired)

Metals AM Design for Manufacturing

We are looking to improve upon the current post processing techniques for metal additive manufacturing (AM). This project, sponsored by Lawrence Livermore National Laboratory (LLNL), will investigate ways to improve the design of stainless steel 316 parts made by AM, and how these designs will help with post processing techniques. We hope that the findings regarding stainless steel will apply to to improve the AM and post processing handshake in general. In particular, the project will focus on including different features in different basic part design shapes to aid in fixturing and post-processing of the part made by AM. This will largely focus on including features for kinematic mounting that can be used to fixture the part in a machine for post processing or for inspection. Kinematic mounts will be added to parts that are to be milled and extension will be added to parts processed by the mill. This type of mounting can improve the accuracy of the part orientation in the machines as well as making positioning of the part more easily repeatable. Various ways of incorporating these mounts into the part design will be tested with post-processing to determine the most beneficial configuration. The information gathered will be used to create a design guide for LLNL to use with their AM processes when determining which type of mounting system would be the most useful in each situation

DESIGN FOR MANUFACTURING WITH RAPID PROTOTYPING

Design and fabrication of an object with parts embedded internally within a part has always been a difficult challenge to fabricate. This is mainly due to limitations in design for manufacturing (DFM)

Development of a Design for Manufacturing Tool for Automated Fiber Placement Structures

Existing design processes for laminates constructed with automated fiber placement lack significant integration between the various software tools that compose the process. Tools for finite element analysis, computer aided drafting, stress analysis, tool path simulation, and manufacturing defect prediction are all critical parts of the design process. With traditional hand-layup laminates, the analysis performed with each of these tools could be fairly well decoupled from one another. However, for laminates generated by automated fiber placement, the disciplines can become significantly coupled, especially on structures with curvature. This gives rise to a need for integrated design for manufacturing software tools that are able to balance the competing objectives from each discipline. This paper describes the preliminary development of such a tool

Computer-aided Tooling Design for Manufacturing Processes

Tooling design for manufacturing processes refers to direct tooling for making a part such as molds and dies for injection molded parts and metal stampings, or for supporting machining operations such as jigs and fixtures. This paper summarizes some of the R&D activities in those areas over a period of 20 years in the Department of Mechanical Engineering, National University of Singapore. It is notable that increasing use of computer tools has turned what is used to be known as a “black art” into a discipline embracing both heuristic and scientific analyses.Singapore-MIT Alliance (SMA

Design for manufacturing and manufacturing capability creation

Abstract. Design for manufacturing is important factor in product development when considering time and cost saving solutions. Through that also manufacturing requirement are taken into consideration in early stages of NPD process. Manufacturing capability creation process is to prepare manufacturing to be able to manufacture new products. The aim of this thesis is to combinate these and create an improved product development process and product development internal ramp-up process in case company. Approach to this research is to use literature review part and compare it to case company current state analysis. Current state analysis is made through qualitative interview process in case company, by using public and company documentation and participatory observations. Literature review and empirical part are compared. Result is a proposal of a new product development model which uses the combination of design for manufacturing and manufacturing capability creation tools

Design for manufacturing for friction stir welding

This thesis is divided in two parts. In the first part, technical feasibility of implementing Friction Stir Welding (FSW) for automobile chassis fabrication is discussed using a case study. In the case study, Design for Manufacturing (DFM) principles are applied to manufacture an aluminum automobile chassis. Various DFM issues such as Tool Accessibility Issue, Joint Configuration Issue, and Fixture Support Issue along with relevant guidelines such as component geometry change and component elimination are discussed in the first section. Results show that more than 50% of the chassis joints can be welded using FSW technique. The second part of the thesis describes efforts to develop a web-based E-Design Tool for the FSW technique. The EDesign Tool accepts joint specifications from the user and generates a set of process parameters that may be used as process design guidelines by engineers and researchers who work on FSW. The E-Design Tool can serve as a useful tool for process parameter selection for designers, engineers, and researchers who work on the FSW technique --Abstract, page v

The relationship between manufacturing and design for manufacturing in product development of natural fibre composites

In this chapter, a study of design for manufacturing of natural fibre composites is presented. Initially, the link between design for manufacturing and manufacturing itself is discussed in the context of natural fibre composites. An account of the manufacturing processes to produce products from natural fibre composites is given. Various activities of design for manufacturing of natural fibre composites in various industries are reviewed. Design for sustainability, a recent topic within design for manufacturing or concurrent engineering, in relation to natural fibre composites is discussed and reviewed. Current work on development of packaging materials from sugar palm fibre reinforced biopolymer composites encompassing materials selection of biopolymers and some testing is discussed. Finally, a case study on the application of design for sustainability guides for a natural fibre composite product is presented

Characterization of beech wood pulp towards sustainable rapid prototyping

Wood has several advantages that are transferable to various derivates allowing the introduction of a sustainable material into the product lifecycle. The objective of this paper is to apply a design for manufacturing approach based on wood flour rapid prototyping, while associating the requirements of the ‘mass customisation’ in the implementation of a customised product. New collaborative software allows consumers to be involved in the design process. Prototyping processes allow direct manufacturing of products

Design for Manufacturing

At this time of writing, the latest Purchasing Managers’ Index (PMI) data from the Chartered Institute of Purchasing and Supply (CIPS) indicated that the UK Manufacturing has hit a 28-month low. As output, new orders and employment have declined; the UK manufacturing sector fell back into contraction to its lowest level since June 2009. It is a sign of low market confidence and uncertainty. In the report, the most worrying aspect is that new orders have nosedived most since March 2009 and output is now sustained through a backlog of work. The traditional manufacturing industries that have kept the UK economy buoyant is facing bleak times and the fact that the Eurozone is also in a crisis. Despite these troubled times, the UK Government hopes that precision engineering and high-value manufacturing sector will create jobs and help tackle record youth unemployment. One such industry is the aviation sector where design for manufacturing has been used as a good industry practice so that products can be manufactured more easily without sacrificing safety. Fundamentally, this can be achieved through two principles: reducing the number of assembly operations by part reduction; or by making the assembly operation easier to perform. This has been something of a holy grail to manufacturing industries where part reduction, cutting the use of fasteners and light-weight materials are favourable for cost savings