A Logic-Based Integrated Manufacturing Planning System

1992 ◽  
Author(s):  
Jerry Y.-H. Fuh ◽  
Chao-Hwa Chang ◽  
Michel A. Melkanoff
Keyword(s):  
Geometric Model ◽  
Integrated Approach ◽  
Planning System ◽  
Feature Analysis ◽  
Prototype System ◽  
Manufacturing Planning ◽  
Fixture Planning ◽  
Manufacturing Information ◽  
Design And Manufacturing ◽  
Integrating Process

Abstract The purpose of this research is to develop a methodology and a prototype system that allows the integration of product design and manufacturing planning. The task is achieved through an integrated CAD-CAPP-CAFP# environment. The system consists of three major modules, namely, Feature Analyzer, Process Planner and Fixture Planner. The manufacturing information of a part required for process and fixture planning is extracted from the 3-D geometric model and the 2-D engineering drawing, thereby both geometric and non-geometric attributes of a part can be obtained. An integrated approach to process and fixture planning is adopted to ensure that the process plan for a part is generated on the basis of a workable fixture plan. The approaches to feature analysis and to integrating process and fixture planning are introduced.

Development of Automated Fixture Planning Systems

1998 ◽  
Author(s):  
W. Ma ◽  
J. Li ◽  
Y. Rong
Keyword(s):  
Lead Time ◽  
System Development ◽  
Planning System ◽  
Design System ◽  
Manufacturing Planning ◽  
Fixture Planning ◽  
Operational Information ◽  
Manufacturing Activity ◽  
Planning Decision ◽  
Fixture Configuration

Abstract Fixturing is an important manufacturing activity. Computer-aided fixture design technique is being rapidly developed to reduce the lead time involved in manufacturing planning. An automated fixture configuration design system has been developed to select automatically modular fixture components and place them into position with satisfactory assembly relationships. In this paper, an automated fixturing planning system is presented in which fixturing surfaces and points are automatically determined based on workpiece geometry and operational information. Fixturing surface accessibility, feature accuracy, and fixturing stability are the main concerns in the fixture planning. The system development, fixture planning decision procedure, and an implementation example are presented in the paper.

scholarly journals Implementation of STEP Application Protocol 224 in an automated manufacturing planning system

2002 ◽  
Vol 216 (9) ◽  
pp. 1277-1289 ◽  
Author(s):  
R Sharma ◽  
J X Gao
Keyword(s):  
Process Planning ◽  
Feature Model ◽  
Planning System ◽  
Design Stage ◽  
Prototype System ◽  
Generation Process ◽  
Product Model ◽  
International Standard ◽  
Manufacturing Planning ◽  
Graphical Tool

This paper reports the results of an on-going research project at Cranfield University in collaboration with a leading consultant company. A major objective of the research to develop a new generation process planning system using the latest tools and technologies, and to fully comply with the international standard for the exchange of product model data (STEP) Application Protocol 224 (AP224) for process planning using machining features. Although AP224 has been accepted as an international standard, there is a surprising lack of compatible software packages in the market. The developed prototype STEP-enabled manufacturing planning system (SMPS) can generate process plans and associated documents from AP224 files automatically, without any user interaction. The system consists of decision logic stored in an external database that makes it generic and compatible with any manufacturing application. A graphical tool is provided for knowledge/logic capture. The system can also accept a feature tree generated using the feature model editor (FME), which has been developed as an add-on to the system. The FME is intended to be a tool for conceptual design of simple components. The FME feature tree is used in the early design stage while the AP224 file generated from the detailed design model is used in the later stages. The prototype system is intended for single-piece machined (prismatic) parts and has been tested with case studies provided by the project collaborators.

Protrusion-features handling in design and manufacturing planning

1993 ◽  
Vol 25 (1) ◽  
pp. 19-28 ◽  
Author(s):  
M.A. Chamberlain ◽  
A. Joneja ◽  
T.-C. Chang
Keyword(s):  
Manufacturing Planning ◽  
Design And Manufacturing

Design, Fabrication, and Characterization of a Soft Multi-Fingered Hand

2016 ◽  
Author(s):  
Lena Johnson ◽  
Hugh A. Bruck ◽  
Satyandra K. Gupta
Keyword(s):  
Geometric Model ◽  
Design Parameters ◽  
Experimental Setup ◽  
Robotic Hand ◽  
Iterative Design ◽  
Modeling Methods ◽  
Design And Manufacturing ◽  
Overall Performance ◽  
Fabrication And Characterization

This paper describes the design, fabrication, testing and modeling of the SUR Hand. The SUR Hand is a soft, under actuated robotic hand. Through an iterative design and manufacturing process, SUR Hand’s soft, actuating components have been adapted from the original PneuFlex, pneumatically actuated finger to be highly flexible and capable of actuating a precision force. This paper shows how altering the design parameters of the fingers altered their overall performance. Furthermore, it details the experimental setup for testing the components, as well as the modeling methods used. Finally, it shows the process for creating and validating a geometric model that characterizes proper grasping strategies, assuming a passive palm component.

Design and Manufacturing of Customized Braces for Scoliosis Treatment

2002 ◽  
Author(s):  
H. Wu ◽  
D. Xue ◽  
J. Harder ◽  
J. L. Ronsky ◽  
P. Poncet ◽  
...  
Keyword(s):  
Geometric Model ◽  
Milling Machine ◽  
Cnc Milling ◽  
Optical Scanning ◽  
Cnc Milling Machine ◽  
Design And Manufacturing ◽  
Scoliosis Treatment ◽  
Noise Data ◽  
Thermoforming Process ◽  
Design And Manufacture

A new method to design and manufacture customized braces is introduced in this research for scoliosis treatment. In this method, a geometric model of a scoliosis patient’s torso is achieved using a laser optical scanning device. The brace geometry is obtained by generating the offset geometry of the torso’s surface, selecting vertical boundaries, removing holes and noise data, creating symmetrical geometry, and modifying the geometry near the pelvis curves. Manufacturing of the brace is conducted by producing a male die with a sculptured surface using a custom-designed 5-axis CNC milling machine and creating the plastic brace using a thermoforming process.

Manufacturing Specific Information Recapture from Geometric Model Using a Data Interchange Format File

2015 ◽  
Vol 809-810 ◽  
pp. 829-834
Author(s):  
Giorgiana Armasoiu
Keyword(s):  
Geometric Model ◽  
Specific Information ◽  
Geometric Information ◽  
Cad System ◽  
Data Interchange ◽  
Manufacturing Information ◽  
Interchange Format ◽  
Manufacturing Features

This paper presents a methodology that makes possible the recapture of manufacturing features of using a DXF file. The methodology is illustrated on a prismatic part. CAD/CAPP integration is achieved by Feature Recognizer Interface. Each CAD system has its own database stucture that offers geometric information regarding the parts, hence, the interpretation and change of these are impossible to be done. The methodology presented in this paper shows how geometric model provides the manufacturing information with the help of DXF file.

Strategic Manufacturing Planning Systems and Their Linkage to Planning System Success

2002 ◽  
Vol 33 (1) ◽  
pp. 1-30 ◽  
Author(s):  
Karen E. Papke-Shields ◽  
Manoj K. Malhotra ◽  
Varun Grover
Keyword(s):  
Planning System ◽  
Planning Systems ◽  
Manufacturing Planning ◽  
System Success

Workpiece Fixture Planning Method for Continuous Multi-Axis Machining with Consideration of Motion on Translational Axis

2012 ◽  
Vol 6 (6) ◽  
pp. 775-780 ◽  
Author(s):  
Jun’ichi Kaneko ◽  
◽  
Kenichiro Horio
Keyword(s):  
Machine Tool ◽  
Maximum Velocity ◽  
Planning Method ◽  
Second Step ◽  
Prototype System ◽  
Machining Time ◽  
Post Process ◽  
Fixture Planning ◽  
Tool Posture ◽  
Short Time

This study deals with a new method to plan fixture conditions of a workpiece on a trunnion table in a continuous multi-axis-controlled machine tool. The motion of the translational axes on the machine tool is usually greatly affected by machine tool structure, tool posture change, and the fixture conditions of the workpiece. However, in a conventional CAM scheme, the fixture conditions are designed to be determined separately. Furthermore, a method of planning these conditions to reduce total machining time has not been proposed. Therefore, this paper proposes a new planning method for workpiece position and posture on a trunnion table. The proposed method consists of two different steps. In the first step, a large number of fixture condition candidates are assumed automatically. In the second step, geometric calculations are executed to estimate the distribution of features in terms of motion on the translation axes. The second step is equivalent to the repetition of coordinate transformations in the conventional post process software. In the developed prototype system, parallel processing technology known as GPGPU is introduced to drastically reduce calculation time. The developed system can visualize differences in total travel distance, maximum velocity, and total machining time for each candidate. These results can assist a CAM operator in selecting the optimal fixture conditions in a short time.

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