Production Engineering
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A methodological approach to evaluate supplier development based on real options
Production Engineering - Tập 8 - Trang 373-382 - 2014
In the last three decades, companies have intensified their global business activities with suppliers and thereby were able to focus on their core competencies. Today, supplier development in low cost countries is of increasing strategic importance due to its high cost-cutting potential; however, especially low cost country sourcing features high decision complexity and challenges due to changing......
The implementation of a sketch-based virtual product development
Production Engineering - Tập 4 - Trang 175-183 - 2010
Within the product development process, working in virtual environments is generally applied. Thus, the digital product model in its different stages is an essential prerequisite for the virtual modeling and simulation of manufacturing processes. Product development starts with conceptual design including the concepts for shape and function. The conceptual designers work on fuzzy product data appl......
A Lean approach in the upstream phase of the product life cycle: Lean Enterprise Model practices applications and analysis from industrial use-cases
Production Engineering - - 2024
The Lean methodology is an interesting way to improve industrial companies’ performance. To implement Lean, training appears to be an important success factor. In the early 2000s, the Lean Aerospace Initiative introduced the Lean Enterprise Model (LEM), which defines Lean practices and offers training support to companies who want to implement this method. The upstream phase of the product life cy......
Predicting thermal loading in NC milling processes
Production Engineering - Tập 9 - Trang 179-186 - 2014
In dry NC milling, a significant amount of heat is introduced into the workpiece due to friction and material deformation in the shear zone. Time-varying contact conditions, relative tool–workpiece movement and continuous geometric change of the workpiece due to material removal lead to a perpetually changing inhomogeneous temperature distribution within the workpiece. This in turn subjects the wo......
General remarks on the entropy-inspired MCAT (manufacturing complexity assessment tool) model to assess product assembly complexity
Production Engineering - Tập 17 - Trang 815-827 - 2023
Assembly complexity assessment is a widely addressed topic in manufacturing. Several studies proved the correlation between assembly complexity and the occurrence of defects, thus justifying this increasing attention. A measure of complexity provides control over quality costs and performances. Over the years, many methods have been proposed to provide an objective measure of complexity. One of th......
Varying bending eigenfrequencies in BTA deep hole drilling: mechanical modeling using statistical parameter estimation
Production Engineering - Tập 1 - Trang 127-134 - 2007
One serious problem in deep-hole drilling is the formation of a dynamic disturbance called spiralling which causes a multi-lobe shaped distortion of the bore hole cross section. An important factor governing the occurrence of spiralling is the coincidence of a bending eigenfrequency of the boring tool with a multiple of the spindle rotation frequency. This article presents a discrete dynamic model......
Clean-sheared and rectangular edges through counter-shaving
Production Engineering - Tập 1 Số 2 - Trang 157-162 - 2007
A various number of products exist which require a clean-sheared edge due to function or surface feel. Traditionally, these parts are produced on fine blanking presses with three separate and distinct movements. Shaving, in particular counter-shaving is a shearing operation to improve the edge quality of a blanked part or punched hole. This paper introduces a progressive die tool to realize the co......
A procedure for the evaluation and compensation of form errors by means of global isometric registration with subsequent local reoptimization
Production Engineering - Tập 8 - Trang 81-89 - 2013
Stresses remaining in the component after sheet metal forming processes can result in complex form errors, such as springback and torsions. In order to compensate these process-induced deformations, the local and global deformations have to be analyzed. Hence, an appropriate comparison between the actually manufactured and the target design is required. For this purpose, the surface of the actual ......
A study of job shop standard setup time quota
Production Engineering - Tập 10 - Trang 185-196 - 2015
For the multi-item and small lot size production mode and single machine job shop scheduling sequence independent setup time, many setup times are difficult to estimate accurately, which influences the ability to achieve accurate production cycles and costs of products. The survey shows that the length of the setup time depends on the level of employee’s knowledge. Therefore, a method for determin......
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