to computer-aided process planning are the variant approach and The generative approach involves generation of new process plans by means planning systems capable of automatically performing the complete task. Generative Computer Aided Process Planning: A system which automatically synthesizes a process plan for a new component is called. in some generative CAPP systems. CAPP has recently emerged as the most critical link to integrated CAD/CAM system into inter-organizational flow. Main focus.
|Published (Last):||8 May 2009|
|PDF File Size:||7.45 Mb|
|ePub File Size:||2.58 Mb|
|Price:||Free* [*Free Regsitration Required]|
It provides for the planning of the process to be used in producing a designed part.
Generative Process Planning
The geometry based coding scheme defines all geometric features for process related surfaces together with feature dimensions, locations, tolerances and the surface finish desired on the features.
Process planning translates design information into the process steps and instructions to efficiently and effectively manufacture products. In addition, a Manufacturing Execution System MES was built to handle the scheduling of tools, personnel, supply, ccapp logistics, as well as maintain shop floor production capabilities. CAPP integrates and optimizes system performance into the inter-organizational flow. Views Read Edit View history.
The planners can invest their time on generatice skilled jobs and also attain the better process plan that is eventually translated into their higher productivity. The whole process plan documents the operations as well as the sequence of operations on different machines. Retrieval and modification of standard process plan A generattive of variant process planning schemes have been developed and are in use.
A typical CAPP frame-work is shown in figure The parameters are used to produce multidimensional differential equations.
systm Other capabilities were table-driven cost and standard estimating systems, for sales representatives to create customer quotations and estimate delivery time. Keneth Generativve  stated that “Manual process planning is based on a manufacturing engineer’s experience and knowledge of production facilities, equipment, their capabilities, processes, and tooling. The syste process planning involves determining proper sequence of manufacturing operations to be carried out so that part can be produced in the least possible time making the optimum use of the available resources.
To make the proper sequence the operations are documented on a form known as the route sheet. Traditional CAPP methods that optimize plans in a linear manner have not been able to satisfy the need for flexible planning, so new dynamic systems will explore all possible combinations of production processes, and then generate plans according to available machining resources.
The similiarities in design generqtive and manufacturing methods are exploited for the purpose of formation of part families. All articles with dead external links Articles with dead external links from August Articles with permanently dead external links. The use of computers for process planning enables systfm a number of problems associated with the manual process planning.
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. In CAPP the same software carries out the process planning and its procedure remains the same whoever uses it.
Computer-aided process planning – Wikipedia
Within each part family standard process plan is established, which is stored in the computer. Solutions had the flexibility sstem change over time based on the ability to satisfy agile manufacturing criteria. Published by Prentice-Hall of India Pvt. But now the computers are being used for manufacturing planning tasks. The variant process planning approach can be realized as a four step process; 1.
With Ca;p the amount of the clerical work is greatly reduced for the process engineers and there are fewer chances of errors. From Wikipedia, the free encyclopedia.
The planning begins with engineering drawings, specifications, parts or material lists and a forecast of demand. Further, with computers it becomes easier to generate production routings that are rational, and consistent without depending on the experience or the judgment of the individuals.
There was a problem providing the content you requested
The system created is highly specific, the concepts can be extrapolated to other enterprises. Development of manufacturing knowledge base is backbone of generative CAPP. Systfm from process planning the manufacturing supervisor has to determine the appropriate cutting conditions for the machining operations, ensuring that there is least wastage of the material.
Every part or product that has to be manufactured in the machine shop of the manufacturing company has to undergo through a series of machining operations in a proper sequence. In some companies the machinists are merely given the drawing and asked to complete the job. Definition of coding scheme 2. This system can be used to generate process plan for rotational, prismatic and sheet-metal parts.
The task of building and implementing the MES system still requires identifying the capabilities that exist within a given establishment, and exploiting them to the fullest potential.
This CAPP system synthesizes the design of the optimum process sequence based generatiev the analysis of the part geometry, material and other relevant parameters.
With CAPP the routine clerical tasks of the manufacturing engineers are reduced, so they can invest their time in more productive tasks. Whether one is using the retrieval system or the generative system, there are number of benefits of CAPP as described below: