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.

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

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.

Automatic Tolerance Analysis for Assessing Manufacturing Errors in Machining Plans

2017 ◽  
Vol 139 (4) ◽  
Author(s):  
Wentao Fu ◽  
Saigopal Nelaturi
Keyword(s):  
Process Planning ◽  
Degrees Of Freedom ◽  
Tolerance Analysis ◽  
Machining Process ◽  
Planning System ◽  
Original Design ◽  
Novel Approach ◽  
Process Planning System ◽  
Manufacturing Errors ◽  
Machining Process Planning

In machining process planning, it is critical to ensure that the part created following the manufacturing steps complies with the designated design tolerances. However, the challenge is that manufacturing errors are stochastic in nature and are introduced at almost every step of executing a plan, for example, due to inaccuracy of tooling, misalignment of location, etc. Furthermore, these errors accumulate or “stack up” as the machining process progresses to inevitably produce a part that varies from the original design. The resulting variations should be within prescribed design tolerances for the manufactured part to be acceptable. In this work, we present a novel approach for assessing the manufacturing errors by representing variations of nominal features with transformations that are defined in terms of extents of the features' degrees-of-freedom (DOFs) within their design and manufacturing tolerance zones (MTZs). We show how the manufacturing errors stackup can be effectively represented by the composition and intersection of these transformations. Several examples representing scenarios of different complexities are demonstrated to show the applicability of our approach in assessing the influence of manufacturing errors on the design tolerances following a machining plan. Discussions of our approach are provided to address concerns with the accuracy and efficiency as well as to disclose the potential of our approach to enable a tolerance-aware process planning system.

An Integrated Process Planning System Architecture for Machining and On-Machine Inspection

2008 ◽  
Author(s):  
Yaoyao F. Zhao ◽  
Xun W. Xu ◽  
Sheng Q. Xie ◽  
Tom R. Kramer ◽  
Fred M. Proctor ◽  
...  
Keyword(s):  
Real Time ◽  
Process Planning ◽  
System Architecture ◽  
Data Model ◽  
Machining Process ◽  
Planning System ◽  
Integrated Process ◽  
Process Planning System ◽  
Inspection Process ◽  
Manufacturing Chain

Inspection is an essential part of the entire manufacturing chain providing measurement feedback to the process planning system. Fully automated machining requires automatic inspection process planning and real-time inspection results feedback. As inspection process planning is still based on G&M codes containing low-level information or vendor-specific bespoke routines, inspection process planning is mostly isolated from machining process planning. With the development of new data model standards STEP and STEP-NC providing high-level product information for the entire manufacturing chain, it is achievable to combine machining and inspection process planning to generate optimal machining and inspection sequences with real-time measurement results feedback. This paper introduces an integrated process planning system architecture for combined machining and inspection. In order to provide real-time inspection feedback, On-Machine Inspection (OMI) is chosen to carry out inspection operations. Implementation of the proposed architecture has been partially carried out with a newly developed data model and interpreter software. A case study was carried out to test the feasibility of the proposed architecture.

CMM Measurement Planning in FAPPS

2000 ◽  
Author(s):  
Sungdo Ha ◽  
Inshik Hwang ◽  
Myon Woong Park ◽  
Hyung-Min Rho
Keyword(s):  
Process Planning ◽  
Metal Cutting ◽  
Automatic Generation ◽  
Planning System ◽  
Automatic Process ◽  
Machining Processes ◽  
Machining Features ◽  
Rule Based ◽  
Process Planning System ◽  
Measurement Planning

Abstract FAPPS (Feature-based Automatic Process Planning System) is developed as a comprehensive metal cutting process planning system operated in PC environments. It can recognize the machining features automatically from a given 3D part design model, and then generates operation sheets, divided process drawings, NC codes, and inspection sheet. It consists of the following modules: tolerance input module for menu-driven input of tolerances, feature recognition module for automatic recognition of pre-defined machining features and compound features, process planning module for rule based determination of machining processes, divided process drawing module for automatic generation of divided process drawings, operation planning module for rule based generation of specific operation plans, and measurement planning module for automatic generation of CMM measurement plans. The CMM measurement planning in FAPPS uses both geometric information and tolerance information from CAD files in order to determine measurement surfaces, number and positions of measurement points, and measurement sequences for inspecting machined parts. The measurement plan is represented in DMIS format for automated measurements using CMM’s. The measurement planning module that is realized in FAPPS is explained in this paper with the developed algorithms. Fuzzy logic calculation is used to determine the number of measurement points and geometric consideration for selecting measurement positions is performed.

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