Showing papers in "CIRP Annals in 2004"

TL;DR: In this paper, a detailed analysis and adaptation of cutting parameters, cutting tools, machine tools and the production environment is mandatory to ensure an efficient process and successfully enable dry machining.

TL;DR: In this paper, a review of the fundamental modeling of chatter vibrations in metal cutting and grinding processes is presented, along with a series of research topics, which have yet to be studied for effective use of chatter prediction and suppression techniques in industry.

TL;DR: In this paper, the authors measured the distribution of residual stress within the model and proposed some methods for reducing the residual stress in order to improve the mechanical properties and dimensional accuracy of the steel model produced by the selective laser melting process.

TL;DR: In this paper, the authors present a maintenance framework that shows management cycles of maintenance activities during the product life cycle, identifying technical issues of maintenance and discuss the advances of technologies supporting the change in the role of maintenance.

TL;DR: In this article, the authors describe requirements, different principles and characteristics of tactile probing systems in dimensional metrology, with examples of several probing systems that are used in practice, as well as a survey of tactile sensing systems.

TL;DR: The new device measures X, Y., Z deviations of circular and spherical movements simultaneously on continuous paths to calibrate parameter errors like backlash, positioning error, squareness, parallelism, etc.

TL;DR: In this article, the authors focus on forming strategies to overcome these process limits, including the processing of tailor rolled blanks, and finite element modelling of the process is presented and discussed with respect to the prediction of the forming limits of ISF.

TL;DR: A review of recent developments in the design and manufacture of precision, fixed-abrasive tools is presented in this paper, with examples showing how the components have been enhanced to achieve their current high levels of performance.

TL;DR: A novel engineering paradigm to deal with services, service engineering is proposed, which defines services as a state change and a computer-aided design tool, called Service Explorer, is developed to represent a network of the parameters and determines the influence weight one another.

TL;DR: In this article, an erosion test simulating wear process and ab-initio molecular orbital calculation are carried out to understand the wear mechanism of diamond tool in machining of ferrous metals, and the results of the tests and analyses show that the essential wear mechanism at the temperature higher than 1000K is the dissociation of carbon atoms on diamond surface due to the interaction with iron surface.

TL;DR: In this article, a hierarchy of focusing is introduced: 1. What is the function provided and what is the optimal way of providing it while making a business out of it? 2. Where are the "environmental hot spots" in the life cycle of this product? 3. Which DFE tool supports optimisation of the product by reducing these hot spots?

TL;DR: In this article, material formability issues in incremental forming were studied and some relevant correlations among material formsability and other mechanical properties of the material were analyzed. And the major strain at fracture in plane strain conditions was determined for different materials and the influence of main material parameters on formability was accurately investigated through a statistical analysis.

TL;DR: In this article, the FEM model is integrated into a mechatronic model of the axis control system and the behaviour of the position and speed control loop is simulated, which is a prerequisite for FEM modelling of a complete machine tool based on feed drives of this type.

TL;DR: The presented research work aims at developing a service design process based on three main strategies for combining products with related services, and simultaneously considers the product, process and information dimensions of services.

TL;DR: In this article, an energy-based analytical force model was developed for orthogonal cutting of metal matrix composite (MMC) to estimate the total specific energy for deformation along with the energy consumed for debonding as a function of volume fraction and material properties.

TL;DR: In this article, a finite element model is developed to simulate the effects of tool flank wear and chip formation on residual stress when orthogonal cutting Ti-6AI-4V.

TL;DR: In this article, experimental observations of what CO2laser powers and scan speeds lead to what type of track, for M2 and H13 tools steels and 314S stainless steel powder beds.

TL;DR: The use of information technology on shop floor level and between the shop floor and other levels within a company as well as the customers is discussed in this paper, where the state of practice and the tendencies in product and production technology and the influence of markets are discussed.

TL;DR: Results suggest that concepts based on strategically similar analogies occur more frequently in the presence of principles that explain the biological phenomena, rather than descriptions of phenomena that focus on forms and behaviors.

TL;DR: In this paper, a framework was created on which to build systems analysis tools that focus on realistic factors within the manufacturing environment, such as information quantity, diversity and content; complexity (product, process and operational); task effort, and so forth.

TL;DR: In this paper, the authors present a process design for producing a pipe coupling from NiTiNb. The design is based on experiments regarding turning and drilling of the intermetallic compound NiTi.

TL;DR: A service configurator was developed for the efficient supply of customer-based services that will also consider the suppliers of the machine manufacturer and the results were evaluated in an industrial environment with the help of an innovative business model.

TL;DR: In this article, the authors assess the modeling and testing approaches and techniques for predicting material response that are available today and then discuss the latest developments in research labs and industrial applications in the fields of modelling and testing.

TL;DR: In this paper, a piezoelectric actuator with high frequency response was introduced to control the discharge gap length of the dry electrical discharge machining (EDM) machine.

TL;DR: In this article, the rotational speed and motor current values were used to calculate the displacement behavior of the machine resulting from these load parameters, and the resulting displacements were calculated online and superposed as offset-values for the correction of the respective axis positions.

TL;DR: In this article, the material removal mechanisms and achievable surface quality in abrasive polishing are discussed, compared to that achieved by laser polishing and abrasive flow machining, and a newly developed abrasive process is presented.

TL;DR: In this paper, a dynamically compensated spindle-integrated force sensor system is presented to measure cutting forces in three directions, and a Kalman filter is designed to filter the influence of structural modes on the force measurements.

TL;DR: The state of the art of photochemical machining, the road map of the PCM roadmap, and newly developed products made by the industry are discussed in this article, with a focus on Microengineering, Microfluidics and Microsystems Technology, economic aspects and current challenges.

TL;DR: In this article, the gain-scheduling control approach for an experimental set-up containing a flexible beam of which the stiffness depends on its length is discussed, and analytically scheduled controllers are synthesized.

TL;DR: A time-deterministic model for the real-time simulation of machine tools using a real CNC was described and the realized virtual machine tool was validated by comparing the simulated milled work piece with a machined one.