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CLASSIFICATION System

Classification and coding practices are as old as the human race. They were used by Adam, as recorded in the Bible, to classify and name plants and animals, by Aristotle to identify basic elements of the earth, and in more modern times to classify concepts, books, and documents. | CHAPTER 31 CLASSIFICATION SYSTEMS Dell K. Allen Manufacturing Engineering Department Retired from Brigham Young University Provo Utah 31.1 PART FAMILY 31.3.3 Process Taxonomy 970 CLASSIFICATION 31.3.4 Process Code 973 AND CODING 951 31.3.5 Process Capabilities 973 31.1.1 Introduction 951 31.1.2 Application 952 31.4 FABRICATION EQUIPMENT 31.1.3 Classification Theory 954 CLASSIFICATION 974 31.1.4 Part Family Code 955 31.4.1 Introduction 974 31.1.5 Tailoring the System 962 31.4.2 Standard and Special Equipment 976 31.2 ENGINEERING MATERIALS 31.4.3 Equipment Classification 976 TAXONOMY 962 31.4.4 Equipment Code 977 31.2.1 Introduction 962 31.4.5 Equipment Specification 31.2.2 Material Classification 962 Sheets 978 31.2.3 Material Code 964 31.2.4 Material Properties 965 31.5 FABRICATION TOOL 31.2.5 Material Availability 966 CLASSIFICATION AND 31.2.6 Material Processability 966 CODING 981 31.5.1 Introduction 981 31.3 FABRICATION PROCESS 31.5.2 Standard and Special TAXONOMY 967 Tooling 982 31.3.1 Introduction 967 31.5.3 Tooling Taxonomy 982 31.3.2 Process Divisions 969 31.5.4 Tool Coding 982 31.5.5 Tool Specification Sheets 984 31.1 PART FAMILY CLASSIFICATION AND CODING 31.1.1 Introduction History Classification and coding practices are as old as the human race. They were used by Adam as recorded in the Bible to classify and name plants and animals by Aristotle to identify basic elements of the earth and in more modem times to classify concepts books and documents. But the classification and coding of manufactured pieceparts is relatively new. Early pioneers associated with workpiece classification are Mitrafanov of the USSR Gombinski and Brisch both of the United Kingdom and Opitz of Germany. In addition there are many who have espoused the principles developed by these men adapted them and enlarged upon them and created comprehensive workpiece classification systems. It is reported that over 100 such classification systems have been created specifically for