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7.2 SIMPLIFICATION AND CONVENTIONS ON ASSEMBLY DRAWING

                  It is allowed not to show on an assembly drawing:
                  А) chamfers, fillets, grooves, collars, cuts and other small elements;
                  B) clearances between a bar and an opening;
                  C) covers, fly-wheels, handles, hoods, if it is necessary to show the parts of an article closed
            by them. Thus the proper record, for example, «Fly-wheel ref.6 is not shown» is done above the
            depiction;
                  D) visible component parts of articles or their elements, are located behind a spring.

                                                     7.3 PART NUMBER


                  All component parts of an article are numbered in accordance with the part number (item
            number, reference character), indicated in the parts list of this assembly unit. The part number is
            pointed out on those representations on which a part is designed as visible, giving advantage to
            basic views or to sectional views.
                  The part number is marked on the shelves of lines of foot-notes which are drawn by thin lines.
            The part number is put on a drawing once as a rule and is placed parallell to the title block.


                                                        7.4 PARTS LIST

                  A parts list is a document, which determines the composition of an assembly unit, complex or
            an assembly, necessary for making designer documents (fig.7.2).
                  A parts list is done on separate sheets A4.
                  In general case a parts list consists of the followings sections:
                  1.Documents. 2.Complexes. 3.Assembly units. 4.Parts. 5.Standard articles. 6.Other products.
            7.Materials. 8.Assemblies.
                   The presence of those or other sections is determined by the composition of an article. The
            name of every section is pointed out as a title in the column «Name» and it is underlined.
                  The section «Documents» consists of documents which make the basic complete set of
            designer documents.
                  The section «Assembly units» consists of assembly units which directly belong to a part
            construction.
                  Non-standard parts are put down in the section «Parts» which are included in an article. They
            are put down according to the increasing of part numbers.
                  The section «Standard articles» consists of standard articles (bolts, studs, nuts), made in
            accordance with State Standards.
                  The section «Materials» consists of materials which are directly included in an article.
                  The vertical columns of parts list are filled in that way:
                –    The column «Format» contains denotations of format where the drawing of a part is done;
                –    The column «Area» is filled in only for drawings, divided into areas;
                –    The column «Part Number» points the numbers of parts in the sequence of recording them
                     to the parts list. For sections «Documentation» and «Assemblies» this column is not filled
                     in;
                –     The column «Denotations» consists of denotations of designer documents on all
                     documents and articles, put down to the parts list;
                –    Additional information, which belong to articles, documents, materials, brought to the
                     parts list is indicated in the column «Note».









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