A Graphical Symbol for Machining Process Information Description Using Model-Based Definition Technology

2014 ◽  
Vol 1061-1062 ◽  
pp. 681-686 ◽  
Author(s):  
Fu Jun Tian ◽  
Hong Qi Zhang ◽  
Xing Yu Chen ◽  
Hong Qiao Zhou ◽  
Di Jiang Chen
Keyword(s):  
Cutting Tools ◽  
Three Dimensional ◽  
Machining Process ◽  
Planning System ◽  
Symbolic Language ◽  
Process Information ◽  
Technical Parameters ◽  
Machining Process Planning ◽  
Graphical Symbol ◽  
Language Description

To realize the process information sharing and three-dimensional annotation, a standardization description model for machining process information was proposed, which including three layers, natural language description layer, object oriented language description layer and symbolic language description layer. By extension the graphical symbol of surface texture, integrated with machining allowance, surface lay and direction, surface roughness, machining method and technical parameters, equipment, fixture, cutting tools, test information, and sequence number, a graphical symbol for three-dimensional machining process information was proposed. Then formulated the annotation specification of the graphical symbol, including annotation plane, position and orientation, associativity, indication of two or more machining step, restricted area and color using. Finally, a three-dimensional machining process planning system was developed, and a part machining process annotation was taken to illustrate the validity of the graphical symbol.

Feature-Based Machining Precedence Reasoning and Sequence Planning

1998 ◽  
Author(s):  
Yong Se Kim ◽  
Eric Wang ◽  
Choong Soo Lee ◽  
Hyung Min Rho
Keyword(s):  
Feature Recognition ◽  
Search Space ◽  
Machining Process ◽  
Planning System ◽  
Process Information ◽  
Computer Aided Process Planning ◽  
Sequence Planning ◽  
Precedence Relations ◽  
Feature Based ◽  
Form Features

Abstract This paper presents a feature-based method to support machining sequence planning. Precedence relations among machining operations are systematically generated based on geometric information, tolerance specifications, and machining expertise. The feature recognition method using Alternating Sum of Volumes With Partitioning (ASVP) Decomposition is applied to obtain a Form Feature Decomposition (FFD) of a part model. Form features are classified into a taxonomy of atomic machining features, to which machining process information has been associated. Geometry-based precedence relations between features are systematically generated using the face dependency information obtained by ASVP Decomposition and the features’ associated machining process information. Multiple sets of precedence relations are generated as alternative precedence trees, based on the feature types and machining process considerations. These precedence trees are further enhanced with precedence relations from tolerance specifications and machining expertise. Machining sequence planning is performed for each of these precedence trees, applying a matrix-based method to reduce the search space while minimizing the number of tool changes. The precedence trees may then be evaluated based on machining cost and other criteria. The precedence reasoning module and operation sequence planning module are currently being implemented within a comprehensive Computer-Aided Process Planning system.

A hole-machining process planning system for marine engines

2013 ◽  
Vol 32 (1) ◽  
pp. 114-123 ◽  
Author(s):  
Cheol-Soo Lee ◽  
Jae-Hyun Lee ◽  
Dong-Soo Kim ◽  
Eun-Young Heo ◽  
Dong-Won Kim
Keyword(s):  
Process Planning ◽  
Machining Process ◽  
Planning System ◽  
Process Planning System ◽  
Marine Engines ◽  
Machining Process Planning ◽  
Hole Machining

Reactive Process Planning: Incorporating Machining, Inspection, and Feedback

2009 ◽  
Author(s):  
Yaoyao F. Zhao ◽  
Xun W. Xu ◽  
Sheng Q. Xie
Keyword(s):  
Real Time ◽  
Process Planning ◽  
Data Model ◽  
Product Information ◽  
Machining Process ◽  
Planning System ◽  
Reactive Process ◽  
Inspection Process ◽  
Measurement Feedback ◽  
Machining Process Planning

Closed-Loop Manufacturing (CLM) techniques include machine tool self-checks, automated setups, tool measurement, in-process probing with process adjustment, on-machine final inspection, data collection and data analysis. All of these elements and more are utilized to collect data in a mostly automated fashion to subsequently correct and adjust undesired conditions that can affect part quality. Inspection process planning plays an essential part of CLM. As G&M codes that contains low-level information or vendor-specific bespoke routines is the primary programming language, inspection process planning is mostly isolated from machining process planning. With the development of new data model standards such as STEP and STEP-NC providing high-level product information for the entire manufacturing chain, it is conceivable that both machining and inspection process planning are considered hand-in-hand to generate optimal machining and inspection sequences with real-time measurement feedback for the CLM scenario. This paper introduces an reactive process planning system architecture that incorporates machining, inspection, and feedback. In order to provide real-time inspection feedback, On-Machine Measurement (OMM) is chosen to carry out inspection operations. Implementation of the proposed architecture has been partially carried out with newly developed data model and interpreter. A case study testified the feasibility of the proposed architecture.

ONTOLOGICAL MACHINING PROCESS DATA MODELLING FOR POWERTRAIN PRODUCTION IN EXTENDED ENTERPRISE

2005 ◽  
Vol 04 (01) ◽  
pp. 69-82 ◽  
Author(s):  
JING CAI ◽  
MICHAEL WEYRICH ◽  
ULRICH BERGER
Keyword(s):  
Process Planning ◽  
Data Exchange ◽  
Machining Process ◽  
Planning System ◽  
Process Chain ◽  
Process Data ◽  
Digital Factory ◽  
Transfer Line ◽  
Feature Technology ◽  
Machining Process Planning

As a new CAx concept, Digital Factory points out digital design of product & virtual planning of production. In this context, feature technology builds up the entire CAx process chain in Digital Factory, and facilitates STEP based engineering data generation and exchange. The collaborative computer-aided machining process planning of a transfer line is an element in process chain of extended enterprises Automotive Engineering. In practice, it is an approach engaged by both OEMs and their long-term machine suppliers. Application of a CAD-based Digital Factory planning system to design a virtual transfer line needs planning standard data and exchange with supplier. This paper highlights STEP-referenced ontological data modeling approach in the standardized data exchange for collaborative machining process planning, discusses the aspects of its prospective application advantages in machining process planning by OEMs and suppliers for Powertrain production in Automotive Industry.

Studies on Process Information Expression Techniques of 3D CAPP

2011 ◽  
Vol 121-126 ◽  
pp. 2258-2262
Author(s):  
Jiang Yong Wang ◽  
Rong Mo
Keyword(s):  
Integration Method ◽  
Three Dimensional ◽  
Machining Process ◽  
Prototype System ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Process Information ◽  
The Status ◽  
Structure Tree ◽  
Processing Information

In allusion to the status of the expression and integration technology of the three-dimensional CAPP processing information, a machining process information expression and integration method was put forward, which was process-oriented and based on the three-dimensional model of products. The machining process object was represented by the processing structure tree, and the processing information was expressed and collected in the three-dimensional situation. Finally，a prototype system was developed to illustrate the feasibility and validity of the proposed method.

WEB-Based Process Planning System for Hydraulic Disk Brake

2009 ◽  
Vol 69-70 ◽  
pp. 570-574
Author(s):  
Shao Fei Jiang ◽  
Cong Da Lu
Keyword(s):  
Process Planning ◽  
Machining Process ◽  
Planning System ◽  
Assembly Process ◽  
Web Based ◽  
Assembly Process Planning ◽  
Disk Brake ◽  
Process Planning System ◽  
Machining Process Planning

Process planning system for hydraulic disk brake for motorcycle based on Microsoft .Net platform is presented. Two modes of process planning which called retrieved process and generated process are studied for assembly process planning and machining process planning. Then process planning system for hydraulic disk brake for motorcycle is developed base on Browse/Sever mode. An example of hydraulic disk brake shows validity of the system.

scholarly journals IPPS_R : a generative process planning system for rotational parts

2021 ◽  
Author(s):  
Yijing Cai
Keyword(s):  
Process Planning ◽  
Metal Cutting ◽  
Machining Process ◽  
Planning System ◽  
Relationship Matrix ◽  
Generative Process ◽  
Process Plans ◽  
Process Planning System ◽  
Rotational Parts ◽  
Machining Process Planning

An automated machining process planning system for rotational parts is designed, developed and implemented. The system is called IPPS_R for Intelligent Process Planning System for Rotational parts. The IPPS_R system is designed for generating process plans for manufacturing rotational parts using metal cutting operations. A generative approach is employed to determine process operations and sequences automatically. For each machining feature, based on the accuracy and surface quality requirements, a fuzzy logic approach is developed to generate machining operations. A method of ranking the machining priorities of the features according to the feature relationship matrix is developed for sequencing operations. Moreover, the heuristic search of process plans is achieved by minimizing the number of setups in a plan. Finally, the IPPS_R system with a user-friendly interface is implemented in Microsoft Visual C++ on a personal computer, utilizing Microsoft Foundation Class (MFC). Two sample parts are used to demonstrate applications of the IPPS_R system.

scholarly journals IPPS_R : a generative process planning system for rotational parts

2021 ◽  
Author(s):  
Yijing Cai
Keyword(s):  
Process Planning ◽  
Metal Cutting ◽  
Machining Process ◽  
Planning System ◽  
Relationship Matrix ◽  
Generative Process ◽  
Process Plans ◽  
Process Planning System ◽  
Rotational Parts ◽  
Machining Process Planning

An automated machining process planning system for rotational parts is designed, developed and implemented. The system is called IPPS_R for Intelligent Process Planning System for Rotational parts. The IPPS_R system is designed for generating process plans for manufacturing rotational parts using metal cutting operations. A generative approach is employed to determine process operations and sequences automatically. For each machining feature, based on the accuracy and surface quality requirements, a fuzzy logic approach is developed to generate machining operations. A method of ranking the machining priorities of the features according to the feature relationship matrix is developed for sequencing operations. Moreover, the heuristic search of process plans is achieved by minimizing the number of setups in a plan. Finally, the IPPS_R system with a user-friendly interface is implemented in Microsoft Visual C++ on a personal computer, utilizing Microsoft Foundation Class (MFC). Two sample parts are used to demonstrate applications of the IPPS_R system.

3D Model Based Machining Process Planning

2011 ◽  
Vol 301-303 ◽  
pp. 534-544
Author(s):  
Jie Zhao ◽  
Ding Hua Zhang ◽  
Zhi Yong Chang
Keyword(s):  
Process Planning ◽  
3D Model ◽  
Raw Material ◽  
Machining Process ◽  
Process Information ◽  
Model Based ◽  
Nc Programming ◽  
3D Scene ◽  
Working Procedure ◽  
Machining Process Planning

The wide application on fields of designing and NC programming based on 3D model of part not only provide the supporting for applying 3D based process planning, but also raise the challenge for the design capability of 3D based process planning. The 3D based process is not just replacing 3D process drawing with 3D model, it is concerned with schemas of designing, managing information applying of process. This paper presents a novel architecture of modeling process information in 3D scene, the 3D based architecture proposed manages process information on the base of geometries and serial changes, which reflect machining operations applied to part, of geometry of part from raw material to final part and comprises such three sub-modules as manufacturing features, 3D model based processes and manufacturing resources. A methodology is exploited aiming at reducing overload of 3D modeling for process planner and keeping the consistency among 3D working procedure models when inevitable process change occurred, then a related algorithm is detailed in which the process decision information retrieved from the technician is transformed automatically to geometrical information to generate 3D working procedure model. Several typical applying of 3D based process consisting of Recognition and analysis of technology dimension chain based on 3D serial model, NC programming for CMM and analysis of feasibility of process are discussed and a prototype is demonstrated to verifying validity of the architecture and the methodology.

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