Opitz coding system in group technology pdf

The opitz coding scheme is one of the more widely used of these coding schemes. A code created by this manner would be relatively more compact than a pure attribute code while retaining the ability to easily identify parts with specific characteristics. Why opitz classification and coding system is a mixed code. An automated coding and classification system with. Parameters for the assessment of classification systems. Stateoftheart in coding systems by a geometrical and. The procedure in production flow analysis must begin by defining the scope of the study. If you do not wish to print this page, then select pages from. Producton stage of variant process planning coding family search standard plan file editing standard plan retrieval process plan group technology group technology is a manufacturing technique and philosophy to increase production efficiency by exploiting the underlying sameness of component shape, dimensions, process. Basic structure of the opitz system of parts classification and coding form code digits 15 for rotational parts in the opitz coding system example 1. In addition, gt codes including opitz coding system. Kk3 system benefits of group technology scope and limitation example of gtbased classification and coding system by computer programming introduction group technology is a manufacturing philosophy in which similar parts are identified and grouped together to take advantage of their similarities in design and manufacturing.

Group technology and cellular manufactur authorstream. Pdf coding and classification based heuristic technique. Each and every family has similar design and manufacturing qualities. Several coding schemes for part coding and classification exist for a. At first tno of holland built up miclass system and it is maintained in the united states by the organization for industrial research. Form code in opitz system is 15100form code in opitz system is 15100 ld ratio 1. When automated, the term flexible manufacturing system is often applied i. Part coding and classification systems are required to apply the group technology philosophy. Group technology and coding is another method of forming families, by grouping components and machines. Opitz coding system is a method of group technology which is applied in computer aided manufacturing cam for part classi. Provide applications and benefits of gt in manufacturing. Pdf me6703 computer integrated manufacturing systems. Review of classification systems used in group technology.

Group technologygt, part families parts classification and coding simple problems in opitz part coding system production flow analysis cellular manufacturing composite part concept machine cell design and layout quantitative analysis in cellular manufacturing rank order clustering method arranging machines. Group technology also known as gt, is a manufacturing technology where similar parts are collectively identified and grouped to use the benefit of their relationship in design and as well as in production. Group technology gt is a manufacturing philosophy in which similar parts are identified and grouped together to take advantage of their similarities in manufacturing and design. Miclass and dclass coding system in group technology follow which type of coding. By the end of the lecture the student should be able to. What is opitz classification system in group technology. Group technology and parts classification and coding are closely related. Benefits of group technology product design derived from coding and classification if new part design is required code of the required part is figured out matched with the existing part designs design standardization material handling is reduced parts are moved within. It is a mixed hybrid coding system developed by opitz, technical university of aachen, 1970 it is widely used in industry it provides a basic framework for understanding the classification and coding process it can be applied to machined parts, nonmachined parts both formed and cast and. Group technology production and manufacturing technology. The opitz classification system developed by the technical university of aachen. A framework for similarity recognition of cad models. The opitz coding is most likely the bestknown coding system. Thebrisch birn system was developed in the uk over 40 years ago.

The basic concept of group technology has been practiced around the world for many years as part of good engineering practice and scientific management 6, applications of group technology concepts are usually identified under different names and in various forms of. Monocode or hierarchical code 2 polycode or attribute 3. A part coded 20801 2 parts has ld ratio 3 0 no shape element external shape elements 8 operating thread 0 no surface machining 1 part is axial example 2. Miclass and dclass coding system in group technology. The algorithm developed can be improved applying other coding system or enhancing the kk3 coding system and the number of families that will be formed. Development of a model for computing similarity indices. However, except the first digit, it resembles a chain structure more nearly. Me8691 syllabus computer aided design and manufacturing. Gt is a manufacturing concept in which similar parts are grouped together in parts groups families. The expected result of coding system design is the time needed to make the design product and process planning for the similar products can be shortened and more systematic than. Kesulitan utama yang sering ditemui dalam produksi massal adalah menghasilkan sebuah produk, dengan varian yang. Group technology is the realization that many problems are similar, and that by grouping similar problems, a single solution can be found to a set of problems thus saving time and effort.

Solving component family identification problems on. This has following advantages over the existing system. Opitz is a coding system used to form groups in group technology philosophy of manufacturing. More recent commercial coding systems take advantage of the databases which are. New jersey institute of technology reserves the right to distribute this thesis or dissertation printing note. Group technology and flexible manufacturing systems group technology flexible manufacturing systems and cells overview of group technology gt parts in the medium production quantity range are usually made in batches disadvantages of batch production. Industrial automation factory automation unit ii group. Produksi massal merupakan salah satu aktifitas dalam dunia industri yang sangat dominan, berkisar 6080% dari semua aktifitas produksi. The similar parts are grouped to form part families. The opitz coding system consists of three groups of digits. External shape a rotational part that is stepped on both with one thread code 5 step 3.

Coding and classification based heuristic technique for. As a first step, group technologys approach will be used to generate the coding system for flare tip products as an important part of flare stack. Components, classification, overview, group technology and cellular manufacturing, parts classification and coding opitz and. Reinhard opitz, german leftwing intellectual and social scientist. The group is a single entity and must act together to resolve problems. There are three basic steps in group technology planning. Automated rulebased system for opitz feature recognition. It should also retain the responsibility for its performance and authority to affect that performance. Introduction group technology gt in cellular manufacturing systems cms is substantial in improving productivity for the manufacturing companies. It is a mixed hybrid coding system developed by opitz, technical university of aachen, 1970 it is widely used in industry it provides a basic framework for understanding the classification and coding process it can be applied to machined parts, nonmachined parts both formed and cast and purchased parts it considers both design and manufacturing information 38.