Analysis of Tool Accessibility in Fixture Setup Planning

2007 ◽  
Author(s):  
Xiumei Kang ◽  
Qingjin Peng
Keyword(s):  
Setup Time ◽  
Critical Issue ◽  
Setup Planning ◽  
New Approach ◽  
Accessibility Analysis ◽  
Simulation Based ◽  
Tool Accessibility ◽  
Design Systems ◽  
Tool Motion ◽  
Assembly Tool

Tool accessibility is a critical issue for generating a complete fixture setup plan to reduce production setup time. Previous fixture design systems rarely consider the assembly tool accessibility. Current methods of assembly tool accessibility analysis mainly depend on simulation-based or user-interactive approaches which rely on users’ judgment. This paper presents a new approach to tool accessibility analysis for fixture setup planning. The fixture workspace around a tool is represented by a newly defined global accessibility sphere with depth of a truncated half-line. The assembly tools are modeled as five articulated parts to fully describe the tool characteristics. Accessibility analysis is executed to verify assembly tools’ feasibility applied on a fastener. In particular, both tool motion and tool placement constraints during tool applications are integrated into the tool geometric reasoning. The example demonstrates the fast computing speed and intuitive simulation of several assembly tools in fixture setup planning.

Tool Feasibility Analysis for Fixture Assembly Planning

2008 ◽  
Vol 130 (4) ◽  
Author(s):  
Xiumei Kang ◽  
Qingjin Peng
Keyword(s):  
Setup Time ◽  
Critical Issue ◽  
Feasibility Analysis ◽  
Assembly Planning ◽  
Fixture Design ◽  
New Approach ◽  
Simulation Based ◽  
Design Systems ◽  
Tool Motion ◽  
Assembly Tool

Tool feasibility is a critical issue for generating a complete fixture assembly plan to reduce production setup time. Previous fixture design systems rarely consider the assembly tool feasibility. Current methods of assembly tool feasibility analysis mainly depend on simulation-based or user-interactive approaches, which rely on users’ judgment. This paper presents a new approach to tool feasibility analysis for fixture assembly planning. The fixture workspace around a tool is represented by a newly defined global accessibility sphere with depth of a truncated half-line. The assembly tools are modeled as five articulated parts to fully describe the tool characteristics. Tool feasibility analysis is executed to verify assembly tools’ feasibility applied on a fastener. In particular, both tool motion and tool placement constraints during tool applications are integrated into the tool geometric reasoning. The example demonstrates the fast computing speed and intuitive simulation of several assembly tools applied in fixture assembly.

Simulation Based Acquisition: A New Approach

1998 ◽  
Author(s):  
Michael V. Johnson ◽  
Mark F. McKeon ◽  
Terence R. Szanto
Keyword(s):  
New Approach ◽  
Simulation Based

scholarly journals The significance of typography in data visualization

2021 ◽  
Vol 11 (1) ◽  
pp. 12-23
Author(s):  
Halime Turkkan
Keyword(s):  
Big Data ◽  
Data Visualization ◽  
Graphic Design ◽  
Design Space ◽  
Critical Issue ◽  
Information Design ◽  
The Other ◽  
Essential Information ◽  
Digital World ◽  
Design Systems

With the development of technology and the dominance of the digital world, typography has become a critical issue. Information design systems are considered as one of the significant areas of graphic design and big data provides essential information on data visualization. This research aims to analyse the effects of typographic elements on visualizing data in terms of visual communication, by discussing the value that typography gives to design space. The research discusses randomly selected 10 infographic design samples published in the last six months on google. From the results, 5 designs with typographic concern were more favourable and visually more striking and preferable than the other 5 designs in terms of design disciplines. As in all areas of graphic design, it is argued that the power of typography is an indisputable concept in data visualization, which is seen as a sub-branch of information design. Keywords: data visualization; design; typography, significance, technology

A New Approach for a Simulation-Based Prediction of Torsional Chatter in Deep Hole Drilling With Extra-Long Twist Drills

2013 ◽  
Author(s):  
E. Abele ◽  
D. Schäfer
Keyword(s):  
General Structure ◽  
Cutting Parameters ◽  
Torsional Stiffness ◽  
Hole Drilling ◽  
New Approach ◽  
Process Dynamics ◽  
Chatter Vibrations ◽  
Simulation Based ◽  
High Level ◽  
Twist Drills

Numerous investigations work on torsional chatter vibrations in drilling. Particularly in terms of productivity, torsional chatter is detrimental because of a reduction of tool life and an undesirably high level of noise emissions due to the increased process dynamics. To achieve a deeper understanding of the process dynamics, a new numerical simulation model was developed to predict torsional chatter for extra-long twist drills. It is used to determine the influence of numerous factors such as cutting parameters, drill torsional stiffness, rotary moment of inertia and torsional-axial coupling. In this paper, the general structure of the model and the tool model is presented.

A new approach to the Scoreboard

2015 ◽  
Vol 42 (4) ◽  
pp. 659-688
Author(s):  
Cosimo Magazzino ◽  
Francesco Felici ◽  
Vanja Bozic
Keyword(s):  
European Commission ◽  
Design Methodology ◽  
Early Stage ◽  
Critical Issue ◽  
Added Value ◽  
Policy Makers ◽  
New Approach ◽  
Content Type ◽  
Starting Point ◽  
The Relationship

Purpose – The purpose of this paper is to investigate the information content of the variables that can help detecting external and internal imbalances in an early stage. The starting point is the Scoreboard, where nine indicators are chosen in order to increase macroeconomic surveillance of all member states. Design/methodology/approach – This paper provides an overview of the variables that could be informative for imbalances by focusing on EU-27 countries over the period 1960-2010. The number of chosen variables is 28, and they are aggregated in six macro-areas. Therefore, once an imbalance is observed in any of those areas, it is possible to detect in a simple way which specific variable is determining such outcome. Findings – In general, this approach provides reliable signal to the policy-makers about the indicators that can drive imbalances within the area, shedding light on the relationship among the variables included in the analysis, too. Research limitations/implications – In fact, the empirical results underline some well-known critical issue for several countries, and is largely in line with results obtained in a variety of EC and OECD studies. Originality/value – The main added value of the approach adopted in this paper is the introduction of more variables than those initially proposed by the European Commission in the construction of the Scoreboard. This provides more information about the macroeconomic situation in each country, preserving, however, the simplicity of the analysis as the variables are aggregated by homogeneous areas.

A Tool/Part/Human Interaction Model for Assembly in Virtual Environments

2000 ◽  
Author(s):  
Uma Jayaram ◽  
Hrishikesh Tirumali ◽  
Sankar Jayaram ◽  
Kevin Lyons
Keyword(s):  
Interaction Model ◽  
Virtual Assembly ◽  
Physical Reality ◽  
Human Interaction ◽  
Design Environment ◽  
Hand Part ◽  
Significant Step ◽  
Tool Accessibility ◽  
Tool Motion ◽  
Assembly Operations

Abstract Current virtual assembly environments primarily allow assembly operations involving pick and place manipulations with hands. In some applications, assembly tools snap onto screws and are constrained. Some non-immersive systems create tool motion script models for the tool to execute the assembly operation. The inclusion of tools and realistic tool operations is a significant step in creating a better virtual assembly environment. We propose a technique to model hand held tools and the corresponding assembly operations in a virtual environment. Intermediate-location constraints and tool engagement constraints obtained from the CAD model are used to model the intermediate positions and engagements of a fastener tool, tool-part, and base-part. In addition, tool-based motion dependent on the rotation of the tool and the pitch of the thread has been achieved for a fastener part This allows us to simulate the physical reality of these interactions without using expensive collide, penetrate, correct, and align methods. The tools and tool/hand/part interactions have been modeled and tested in a virtual assembly and design environment successfully. This capability also allows tool accessibility and tool operability to be verified.

Risk Evaluation by Human Trajectory Simulation Based on Real Data

2011 ◽  
Vol 15 (2) ◽  
pp. 220-225
Author(s):  
Kiyoshi Izumi ◽  
◽  
Yoshifumi Nishida ◽  
Yoichi Motomura ◽  
Keyword(s):  
Risk Evaluation ◽  
Real Data ◽  
Public Spaces ◽  
Layout Design ◽  
Sensor Data ◽  
Agent Based Simulation ◽  
New Approach ◽  
Agent Based ◽  
Trajectory Simulation ◽  
Simulation Based

This paper proposes a new approach integrating the modeling of moving persons from sensor data and agent-based simulation for indoor layout design viewed from preventing children’s accidents. Our model focuses on interaction between indoor objects and children to estimate the risk of indoor accidents. We discuss the agent-based simulation of multiple persons moving in public spaces and its application to evaluating information presentation for guidance.

Risk Degree Assessment of Natural Disasters in China Using Set Pair Analysis Method

2012 ◽  
Vol 518-523 ◽  
pp. 1273-1277
Author(s):  
Yun Xia Xie ◽  
Wen Sheng Wang
Keyword(s):  
Natural Disasters ◽  
Critical Issue ◽  
Set Pair Analysis ◽  
Analysis Method ◽  
Full Account ◽  
New Approach ◽  
Risk Degree ◽  
Assessment Standard ◽  
Pair Analysis

It is a critical issue to assess risk degree of natural disasters in China. Firstly the assessment indexes and assessment standard grades of natural disasters risk degree are established, then comes up with a new approach to assess risk degree of natural disasters: Set Pair Analysis Method (SPAM), finally acquires the risk degree grades of Chinese natural disasters based on SPAM. The SPAM takes the fuzzy of grade standards into full account, and is simple in concept and easy in calculation and application. The results of evaluation about Chinese natural disasters risk degree are credible.

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