Computer aided process planning thesis

Process planning determines how a product is to be manufactured and is therefore a key element in the manufacturing process. It plays a major part in determining the cost of components and affects all factory activities, company competitiveness, production planning, production efficiency and product quality. It is a crucial link between design and manufacturing. There are several levels of process planning activities.

Computer aided process planning thesis

It provides for the planning of the process to be used in producing a designed part. Process planning is concerned with determining the sequence of individual manufacturing operations needed to produce a given part or product.

Computer aided process planning thesis

Process planning in manufacturing also refers to the planning of use of blanks, spare parts, packaging material, user instructions manuals etc. The term "computer-aided production planning " is used in different contexts on different parts of the production process; to some extent CAPP overlaps with the term "PIC" production and inventory control.

Process planning translates design information into the process steps and instructions to efficiently and effectively manufacture products. As the design process is supported by many computer-aided tools, computer-aided process Computer aided process planning thesis CAPP has evolved to simplify and improve process planning and achieve more effective use of manufacturing resources.

Process planning encompasses the activities and functions to prepare a detailed set of plans and instructions to produce a part. The planning begins with engineering drawings, specifications, parts or material lists and a forecast of demand.

Computer aided process planning thesis

The results of the planning are: Routings which specify operations, operation sequences, work centers, standards, tooling and fixtures. This routing becomes a major input to the manufacturing resource planning system to define operations for production activity control purposes and define required resources for capacity requirements planning purposes.

Process plans which typically provide more detailed, step-by-step work instructions including dimensions related to individual operations, machining parameters, set-up instructions, and quality assurance checkpoints.

Fabrication and assembly drawings to support manufacture as opposed to engineering drawings to define the part. Keneth Crow [3] stated that "Manual process planning is based on a manufacturing engineer's experience and knowledge of production facilities, equipment, their capabilities, processes, and tooling.

Process planning is very time-consuming and the results vary based on the person doing the planning". According to Engelke, [4] the need for CAPP is greater with an increased number of different types of parts being manufactured, and with a more complex manufacturing process.

Computer-aided process planning initially evolved as a means to electronically store a process plan once it was created, retrieve it, modify it for a new part and print the plan. Other capabilities were table-driven cost and standard estimating systems, for sales representatives to create customer quotations and estimate delivery time.

Future development[ edit ] Generative or dynamic CAPP is the main focus of development, the ability to automatically generate production plans for new products, or dynamically update production plans on the basis of resource availability.

In addition, a Manufacturing Execution System MES was built to handle the scheduling of tools, personnel, supply, and logistics, as well as maintain shop floor production capabilities. Generative CAPP systems are built on a factory's production capabilities and capacities. In Discrete Manufacturing, Art-to-Part validations have been performed often, but when considering highly volatile engineering designs, and multiple manufacturing operations with multiple tooling options, the decisions tables become longer and the vector matrices more complex.

Unlike a Variant Process Planning system that modifies existing plans, each process plan could be defined automatically, independent of past routings. As improvements are made to production efficiencies, the improvements are automatically incorporated into the current production mix.

Shop floor manufacturing abilities of BYJC were defined. It was determined that there are 46 major operations and 84 dependent operations the shop floor could execute to produce the product mix.

These operations are manufacturing primitive operations. As new manufacturing capabilities are incorporated into the factory's repertoire, they need to be accommodated in the spectrum of operations. These factory operations are then used to define the features for the Feature Based Design extensions that are incorporated into the CAD system.

The combination of these feature extensions and the parametric data associated with them became part of the data that is passed from the CAD system to the modified PDM system as the data set content for the specific product, assembly, or part.

The ERP system was modified to handle the manufacturing abilities for each tool on the shop floor. This is an extension to the normal feeds and speeds that the ERP system has the capability of maintaining about each tool.

In addition, personnel records are also enhanced to note special characteristics, talents, and education of each employee should it become relevant in the manufacturing process. Once physical components are identified, the items are scheduled.

The scheduling is continuously updated based on the real time conditions of the enterprise. Ultimately, the parameters for this system were based on: Availability The parameters are used to produce multidimensional differential equations.

Solving the partial differential equations will produce the optimum process and production planning at the time when the solution was generated.

Evolution of Computer-Aided Design - Digital Engineering

Solutions had the flexibility to change over time based on the ability to satisfy agile manufacturing criteria. · The Role of Computer Aided Design (CAD) in the Manufacturing and Digital Control (CAM) automation (Industrial Robotics) and planning of production processes (Process Planning) and the overall layout of the plant, including so planning tables Computer aided design in manufacturing and digital control product, for example, allows urbanagricultureinitiative.com COMPUTER AIDED PROCESS PLANNING (CAPP): THE USER INTERFACE FOR THE FABRICATION MODULE OF THE RAPID DESIGN SYSTEM Name: Cartaya, Christine Marie University of Dayton, Advisor: Dr.

John P. Eimermacher The Rapid Design System (RDS) is a feature based design, fabrication, and inspection system. contribution to the performance criteria. Hence, scheduling unlike process planning is aimed at improving the time performance of the system. Process planning function being a technological decision maker about the process, machine tools, operation sequence, .

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Z. Sampaio perable and reusable way. BIM represents the process of development and [1] use of a computer generated model to simulate the planning, design, urbanagricultureinitiative.com Who we are?

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This research is an effort to develop an expert system for the computer-aided process planning of rotational parts. Recommended Citation Alex, Dijo Tito, "Knowledge-Based System for Computer-Aided Process Planning of Rotational Parts" ().urbanagricultureinitiative.com

Computer-aided process planning - Wikipedia