Application of Semi Automatic Model of Product Complexity Index Calculation by Identification and Recognition of Geometric Features Information

2014 ◽  
Vol 493 ◽  
pp. 576-582
Author(s):  
Hendri D.S. Budiono ◽  
Mochammad Sholeh ◽  
Gandjar Kiswanto ◽  
Tresna P. Soemardi
Keyword(s):  
Design Process ◽  
Process Design ◽  
Mechanical Design ◽  
Continuous Process ◽  
Machining Process ◽  
Product Complexity ◽  
Machining Processes ◽  
Industrial Facilities ◽  
Car Sales ◽  
The Government

It is a phenomenon that an experience mechanical/ design engineer with years of experience in mechanical parts design, still must to improve the knowledge about process design. This phenomenon will be different with other fields but common in process design because design is continuous process. The automotive industry is expected to be one of the driving factors for economic growth in Indonesia in 2025. It is shown by research firm (Frost & Sullivan) that estimates this year's car sales in Indonesia will rise moderately by 6.5% from a year earlier to 948,500 units and the real car sales in Indonesia rose to 43% in April 2012. Development should be increased because the government provides to industrial facilities that conduct research, development and innovation. Therefore the design process until production is expected to be rapid and immediate product can be enjoyed by society. To speed up the production process, the design process should be faster, and account how the next process that is the production. This research useds the form of the usual features carried with three machining processes are widely used in the world of mechanical component industries. The processes are turning (around 24.9% of machining process), milling (around 20.2% of machining process) and drilling (around 28.2% of machining process). The overall mean of the three processes around 73.3% of the portion of the machining process (survey conducted by PERA).

Evaluating Process Design through Quality Function Deployment for Environment

2010 ◽  
Vol 97-101 ◽  
pp. 2377-2380
Author(s):  
Yong Ming Wu ◽  
Zhou Hui Yang
Keyword(s):  
Product Design ◽  
Process Design ◽  
Quality Function Deployment ◽  
Green Manufacturing ◽  
Design Tool ◽  
Machining Process ◽  
Machining Processes ◽  
Quality Function ◽  
Know How ◽  
Design Engineers

Quality Function Deployment for Environment (QFDE) is an effective eco-design tool to transform the voices of customer and environment into the engineering metrics for evaluating product design. From the viewpoint of green manufacturing, machining process design is focused on by many manufacturers and it is necessary to evaluate its environmental impact. The QFDE method is developed to evaluate machining process design with the new house of quality. According to the evaluation, design engineers can identify which part characteristics and their machining processes should be focused on and then know how to improve the product design. A case of an engine is studied to illustrate the proposed method.

An Integrated Machining Process Design Simulator for the Optimal Design of Face Milling Systems

1985 ◽  
Vol 107 (4) ◽  
pp. 301-308 ◽  
Author(s):  
S. J. Lee ◽  
S. G. Kapoor ◽  
R. E. DeVor
Keyword(s):  
Design Process ◽  
Process Design ◽  
Metal Removal ◽  
Removal Rate ◽  
Structural Characteristics ◽  
Open Loop ◽  
Face Milling ◽  
Machining Process ◽  
Structural Element ◽  
Finite Element Program

An Integrated Machining Process Design Simulator (IMPDS) is developed and applied as a general tool for the design of face milling systems. The simulator includes four modules to accommodate the important factors that affect face milling operations. These modules are: a general purpose finite element program to analyze structural characteristics, a mechanistic face milling force module for both open-loop and closed-loop cutting force simulations, a machinability module to evaluate cutting process performance, and an efficient optimization module to automate the design process. The design variables, constraints, and objective function of the entire system include structural element size, shape, and weight, cutting forces and vibrations, and other machinability measures including tool life, metal removal rate, and surface finish. Several examples are included to demonstrate the capability of IMPDS in the machining system design process.

scholarly journals Reconstruction automatique des entités d’un modèle BREP à partir d’un maillage déformé

2009 ◽  
Author(s):  
Borhen Lohichi ◽  
Abdelmajid BenAmara ◽  
Vincent François
Keyword(s):  
Design Process ◽  
Process Design ◽  
Mechanical Design ◽  
Design Analysis ◽  
Cad Model ◽  
Product Model ◽  
Design And Optimization ◽  
Shared Data ◽  
Cad Cam

Nowadays, the integration of the different steps of mechanical design process (Design, analysis and manufacturing) is a necessity to reduce the time of design and optimization. This tendency of integrating CAD/CAM/Analysis and automation of the corresponding processes requires shared data between the various tasks using an integrated product model. Our research is oriented to CAD/CAM/Analysis integration by rebuilding the CAD model (BREP) starting from the FE results (deformed mesh). This paper presents techniques for rebuilding the geometrical and topological entities of the CAD model starting from a deformed mesh.

Studying The Effect of a New Mixed Cutting Fluid on Surface Roughness

2020 ◽  
Vol 38 (11A) ◽  
pp. 1593-1601
Author(s):  
Mohammed H. Shaker ◽  
Salah K. Jawad ◽  
Maan A. Tawfiq
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Cutting Parameters ◽  
Machining Process ◽  
Cutting Fluid ◽  
Depth Of Cut ◽  
Cutting Fluids ◽  
Machining Processes ◽  
Dry Cutting ◽  
Cutting Speeds

This research studied the influence of cutting fluids and cutting parameters on the surface roughness for stainless steel worked by turning machine in dry and wet cutting cases. The work was done with different cutting speeds, and feed rates with a fixed depth of cutting. During the machining process, heat was generated and effects of higher surface roughness of work material. In this study, the effects of some cutting fluids, and dry cutting on surface roughness have been examined in turning of AISI316 stainless steel material. Sodium Lauryl Ether Sulfate (SLES) instead of other soluble oils has been used and compared to dry machining processes. Experiments have been performed at four cutting speeds (60, 95, 155, 240) m/min, feed rates (0.065, 0.08, 0.096, 0.114) mm/rev. and constant depth of cut (0.5) mm. The amount of decrease in Ra after the used suggested mixture arrived at (0.21µm), while Ra exceeded (1µm) in case of soluble oils This means the suggested mixture gave the best results of lubricating properties than other cases.

The design of modular oil tank: A new design process model

2020 ◽  
Vol 15 ◽  
Author(s):  
Jin Li ◽  
Xingsheng Jiang ◽  
Jingye Li ◽  
Yadong Zhao ◽  
Xuexing Li
Keyword(s):  
Product Design ◽  
Design Process ◽  
Process Model ◽  
Mechanical Design ◽  
Computer Software ◽  
Reference Value ◽  
Fuel Tank ◽  
Design Quality ◽  
Design Time ◽  
Design Process Model

Background: In the whole design process of modular fuel tank, there are some unreasonable phenomena. As a result, there are some defects in the design of modular fuel tank, and the function does not meet the requirements in advance. This paper studies this problem. Objective: Through on-the-spot investigation of the factory, a mechanical design process model is designed. The model can provide reference for product design participants on product design time and design quality, and can effectively solve the problem of low product design quality caused by unreasonable product design time arrangement. Methods: After sorting out the data from the factory investigation, computer software is used to program, simulate the information input of mechanical design process, and the final reference value is got. Results: This mechanical design process model is used to guide the design and production of a new project, nearly 3 months ahead of the original project completion time. Conclusion: This mechanical design process model can effectively guide the product design process, which is of great significance to the whole mechanical design field.

Shared services beyond sourcing the back offices: Organizational design

2007 ◽  
Vol 26 (4) ◽  
pp. 281-290
Author(s):  
Shouhong Wang ◽  
Hai Wang
Keyword(s):  
Organizational Support ◽  
Process Design ◽  
Organizational Design ◽  
Regulation System ◽  
Shared Services ◽  
Information Process ◽  
Shared Service ◽  
Strategy Identification ◽  
The Government ◽  
Partnership Network

Shared services have been widely spread in the government and private sectors. Unlike outsourcing, shared service is the standardization and consolidation of common functions across the multiple organizations to reduce information process duplication and increase information and knowledge sharing. Shared services should be viewed less as a phenomenon of cost saving and more as a challenge of organization redesign. Five general leading theories of organizational design are examined in the perspective of shared services. A quasi-general organizational design approach is proposed specifically for shared services projects. The proposed approach emphasizes the organizational support for the shared services strategy identification, collaborative partnership network design, optimal shared services process design, and policy and regulation system design.

scholarly journals Temperature monitoring in the subsurface during single lip deep hole drilling

2020 ◽  
Vol 87 (12) ◽  
pp. 757-767
Author(s):  
Robert Wegert ◽  
Vinzenz Guski ◽  
Hans-Christian Möhring ◽  
Siegfried Schmauder
Keyword(s):  
Cutting Parameters ◽  
Drill Hole ◽  
Machining Process ◽  
Hole Drilling ◽  
Drilling Process ◽  
Deep Hole ◽  
Machining Processes ◽  
Deep Hole Drilling ◽  
Feed Force ◽  
Cutting Zone

AbstractThe surface quality and the subsurface properties such as hardness, residual stresses and grain size of a drill hole are dependent on the cutting parameters of the single lip deep hole drilling process and therefore on the thermomechanical as-is state in the cutting zone and in the contact zone between the guide pads and the drill hole surface. In this contribution, the main objectives are the in-process measurement of the thermal as-is state in the subsurface of a drilling hole by means of thermocouples as well as the feed force and drilling torque evaluation. FE simulation results to verify the investigations and to predict the thermomechanical conditions in the cutting zone are presented as well. The work is part of an interdisciplinary research project in the framework of the priority program “Surface Conditioning in Machining Processes” (SPP 2086) of the German Research Foundation (DFG).This contribution provides an overview of the effects of cutting parameters, cooling lubrication and including wear on the thermal conditions in the subsurface and mechanical loads during this machining process. At first, a test set up for the in-process temperature measurement will be presented with the execution as well as the analysis of the resulting temperature, feed force and drilling torque during drilling a 42CrMo4 steel. Furthermore, the results of process simulations and the validation of this applied FE approach with measured quantities are presented.

scholarly journals Influence of a closed-loop controlled laser metal wire deposition process of S Al 5356 on the quality of manufactured parts before and after subsequent machining

2021 ◽  
Author(s):  
Dina Becker ◽  
Steffen Boley ◽  
Rocco Eisseler ◽  
Thomas Stehle ◽  
Hans-Christian Möhring ◽  
...  
Keyword(s):  
Wall Thickness ◽  
Closed Loop ◽  
Deposition Process ◽  
Metal Wire ◽  
Machining Process ◽  
Machining Processes ◽  
Initial State ◽  
Additive Process ◽  
Shape Accuracy ◽  
Loop Control

AbstractThis paper describes the interdependence of additive and subtractive manufacturing processes using the production of test components made from S Al 5356. To achieve the best possible part accuracy and a preferably small wall thickness already within the additive process, a closed loop process control was developed and applied. Subsequent machining processes were nonetheless required to give the components their final shape, but the amount of material in need of removal was minimised. The effort of minimising material removal strongly depended on the initial state of the component (wall thickness, wall thickness constancy, microstructure of the material and others) which was determined by the additive process. For this reason, knowledge of the correlations between generative parameters and component properties, as well as of the interdependency between the additive process and the subsequent machining process to tune the former to the latter was essential. To ascertain this behaviour, a suitable test part was designed to perform both additive processes using laser metal wire deposition with a closed loop control of the track height and subtractive processes using external and internal longitudinal turning with varied parameters. The so manufactured test parts were then used to qualify the material deposition and turning process by criteria like shape accuracy and surface quality.

A model of the mechanical design process based on empirical data

1988 ◽  
Vol 2 (1) ◽  
pp. 33-52 ◽  
Author(s):  
David G. Ullman ◽  
Thomas G. Dietterich ◽  
Larry A. Stauffer
Keyword(s):  
Problem Solving ◽  
Detailed Analysis ◽  
Conceptual Design ◽  
Design Process ◽  
Empirical Data ◽  
Mechanical Design ◽  
Level Of Detail ◽  
Cad Tools ◽  
Design Alternatives ◽  
Key Features

This paper describes the task/episode accumulation model (TEA model) of non-routine mechanical design, which was developed after detailed analysis of the audio and video protocols of five mechanical designers. The model is able to explain the behavior of designers at a much finer level of detail than previous models. The key features of the model are (a) the design is constructed by incrementally refining and patching an initial conceptual design, (b) design alternatives are not considered outside the boundaries of design episodes (which are short stretches of problem solving aimed at specific goals), (c) the design process is controlled locally, primarily at the level of individual episodes. Among the implications of the model are the following: (a) CAD tools should be extended to represent the state of the design at more abstract levels, (b) CAD tools should help the designer manage constraints, and (c) CAD tools should be designed to give cognitive support to the designer.

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