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.
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However, the individual engineers have their own opinions about what constitutes the best routing for the manufacture of a job. This CAPP system synthesizes the design of the optimum process sequence based on the analysis of the part geometry, material and other relevant parameters. 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.
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. The planning begins with engineering drawings, specifications, parts or material lists and a forecast of demand. Thus the syshem planning becomes logical, consistent and rationalized as it does not depends on the individualistic experience or judgment.
Execution planning can be dynamic and accommodate changing conditions. CAPP integrates and optimizes system performance into the inter-organizational flow. It includes selection of processes, machine tools, jigs or fixtures, tools, inspection equipments and sequencing operations. The similiarities in design attributes and manufacturing methods are exploited for the purpose of formation of part families. Apart from sytem planning the manufacturing supervisor has to determine the appropriate cutting conditions for the machining operations, ensuring that there is least wastage of the material.
Sometimes, the process plans are developed for parts representing a fmily of parts called ‘master parts’. 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 generativd combinations of production processes, and then generate plans according to available machining resources.
Systwm 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.
Computer-aided process planning
The system developed is such that it is easier to retrieve the process plans for the new work parts. Development of manufacturing knowledge base is backbone of generative CAPP. In CAPP the same software carries out the process planning and its procedure remains the same whoever uses it. This page was last edited on 26 Septemberat The system created is highly specific, the concepts can be extrapolated to other generatice.
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.
Product lifecycle management Workflow generaive Information technology management Industrial computing. For example, details such as rough and finished states of the parts and process capability of machine tools to transform these parts to the desired states are provided. Computer-aided process planning CAPP is the use of computer technology to aid in the process planning of a part or product, in manufacturing.
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Computer Aided Process Planning (CAPP) Manufacturing Capacity Planning by Computers
Due to this there are differences in the sequence of the machining operations developed by different planners. But now the computers are being used for manufacturing planning generztive.
The retrieval CAPP system offers lots of flexibility as one can do lots of editing and venerative as per the requirements. The manufacturing 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.
Management and Technology”, p. 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. A number of methods have been developed for part family formation using coding and classification schemes of group technology GTsimiliarity-coefficient based algorithms and mathematical programming models.
Process planning syystem manufacturing also refers to the planning of use of blanks, spare parts, packaging material, user instructions manuals etc. 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. This suggests a system in which design information is processed by the process planning system to generate manufacturing process details.
Computer-aided process planning – Wikipedia
From Wikipedia, the free encyclopedia. Whether one is using the retrieval system or the generative system, there are number of benefits of CAPP as described below: As the design process is supported by many computer-aided tools, computer-aided process planning CAPP has evolved to simplify and improve process planning and achieve more effective use of manufacturing resources.
Traditional Manufacturing Process Planning All the three tasks: Until recently, the whole process planning tasks were being done manually.
The documents made from the computer are neat, clean and clear, which makes reading the routing sheets easier. Generative CAPP systems are built on a factory’s production capabilities and capacities. The parameters are used to produce multidimensional differential equations.