Papers by Keyword: Manufacturability

Abstract: The results of studies on the production of welding wires with a diameter of 2.5 and 3.3 mm from alloy 1580 are presented. To compare the manufacturability of the processing, various methods were used to obtain billets for drawing with a diameter of 8-12 mm: the traditional method of direct hot extruding (discrete); combined rolling-extruding method; and ingotless rolling-extruding method (continuous). The developed modes of bar rolling, drawing and annealing made it possible to obtain prototypes of wire in laboratory and industrial conditions. It was found that alloy 1580 is highly manufacturable both with the traditional method of pressure treatment (extruding) and with combined rolling-extruding methods. It was revealed that the application of all methods makes it possible to obtain billets with the level of mechanical properties necessary for further multi-operation processing. Based on the results of research obtained in laboratory conditions, rational drawing modes for industrial wire production have been developed. As a result of bay drawing, pilot batches of welding wire with a diameter of 3.26 and 2.47 mm from alloy 1580 were obtained, which was successfully used for welding sheet metal.

Abstract: This article gives a brief description of metal oxides, acceptable for using in advanced conductometric gas sensors, as well as a consideration of approaches, that can be used to select metal oxides for the manufacture of devices intended to sensor market.

Abstract: It is necessary to ensure performance characteristics of vane pump using virtual analysis of scale and geometrical tolerances. As performance characteristics are chosen axial and radial clearance between the rotor and the other details ensuring normal operation of the pump. The virtual analysis may be made by creating of nominal 3D-CAD model in Solid Works medium using the modules for dimensional analysis by DimXpert and analysis of tolerances TolAnalyst. The dimensional chains related to determined characteristics are developed. The results obtained will be used for amelioration of manufacturability of this pumps. This approach allows to find the most suitable constructional decision on this stage and to shorten the time for design.

Abstract: Today additive manufacturing is shaping the future of global manufacturing and is influencing the design and manufacturability of tomorrows products. With selective laser melting (SLM), parts can be built directly from computer models or from measurements of existing components to be re-engineered, and therefore bypass traditional manufacturing processes such as cutting, milling and grinding. Benefits include: 1) new designs not possible using conventional subtractive technology, 2) dramatic savings in time, materials, wastage, energy and other costs in producing new components, 3) significant reductions in environmental impact, and 4) faster time to market. SLM builds up finished components from raw material powders layer by layer through laser melting. SLM removes many of the shape restrictions that limit design with traditional manufacturing methods, thereby allowing computationally optimised, high performance structures to be utilised. Functional engineering prototypes and actual components can then be built in their final shape with minimal material wastage. Samples and small product runs can be produced quickly at comparatively low cost to test and build market acceptance without major investment. In this chapter we present and discuss some of the concepts and findings involved in the design, manufacture and examination of high-value aerospace components from Ti-6Al-4V alloy produced at the RMITs Advanced Manufacturing Precinct.

Abstract: To realize machine tool modular customization and configuration, the driving and mapping model of customer requirement is established in the environment of various customer requirement and mass individualized customization, which can transform processing of parts driven by customer requirement into function configuration FC, structure configuration SC and appearance configuration AC (3C) of module features. Besides, to solve the question of module manufacturability, by module compatibility analysis on dynamic, kinematic and aesthetic (MC3), a multi-dimensional configuration method for manufacturable of modular machine tool based on MC33C is proposed in this paper. Finally, A case study is given to prove effectiveness and adaptability of the proposed method, and the result shows that the various and individualized requirements are meet and design efficiency is improved.

Abstract: The demand for complex sheet parts has increased more and more in the modern lightweight construction, especially in the automotive industry. Complex drawn sheet parts can be usually achieved in one step with using the hydroforming technology. As the demand for the complex products increase, the need of hydroforming process will greatly expanded around the world due to its many advantages. Complex parts have many convex and/or concave features on it. The shapes, dimensions and the positions of the features are important for manufacturing high quality products. So understanding these geometrical parameters on the product quality has great importance. In this study, the effects of the geometrical parameters of the complex stepped parts on the manufacturability by using sheet hydroforming process were numerically investigated for AA5754 aluminum alloy and some of results were experimentally confirmed.

Abstract: A method and prototype system have been developed to assess manufacturability of a machining job with a known machine tool. The data for describing the machining task confirms to STEP-NC data model, i.e. ISO 14649. A group of manufacturability indices have been suggested used in the system. They are called “Key Manufacturability Indicators” (KMIs). Examples of KMIs are workpiece clamping data, machine tool’s capability and cutting tool information. To assist the evaluation process, a machine tool data model is used. The prototype system is validated through an example.

Abstract: This paper presents a design system that enables the composition of parts using manufacturing features. Features are selected from feature libraries. Upon insertion, the system ensures that the feature does not contradict the design-for-manufacture rules. This helps eliminating costly manufacturing problems. The system is developed as an extension to a commercial CAD/CAM system Pro/Engineer.

Abstract: The recent application of tube hydroforming in the automotive industry demands finite element analysis, since it is rapidly being used as an effective tool for the evaluation of the design of hydroforming processes. In this paper the formability of rear sub-frame in car body with tube hydroforming is studied. The comparison of various feeding and pressure on the hydroforming process is evaluated utilizing Finite Element Method to obtain detailed information on the deformation behaviors in hydroforming of rear sub-frame. It has been shown that optical leading paths such as axial feeding and internal pressure can quantify the circumferential thickness distribution in the rear sub-frame tube periphery.

Abstract: The anatase coatings was obtained by aqua regia dealloying and plasma electrolytic oxidation (PEO) method on NiTi shape memory alloy (SMA) substrate. The PEO manufacturability of NiTi SMA before and after dealloying was researched. The PEO surface morphologies of the aqua regia treated and untreated specimens were investigated with scanning electron microscopy (SEM). The composition of the PEO coatings was investigated with X-ray diffraction (XRD). The element concentration of the surface of the PEO-treated NiTi SMA was measured by an energy dispersive X-ray spectrometer (EDS). The results indicate that the pre-treatment technology by aqua regia dealloying can greatly improve the PEO manufacturability and the PEO morphologies of the NiTi SMA. The optimum dealloying parameters are at room temperature for 10 min. At this circumstance, the PEO manufacturability of the treated samples is most close to that of the industrial pure titanium. There are many honeycomb-like micro-pores in the surface of the PEO coatings, which act as discharging channels. The cracks are invisible in the SEM images of the PEO coatings. The PEO coatings formed on the NiTi is composed of Ti, Ni, Al, O, Au and P. The composition of the PEO coatings is mainly composed of NiTi phase and anatase phase.