TAILIEUCHUNG - Dimensioning and Tolerancing Handbook Episode 2 Part 2

Tham khảo tài liệu 'dimensioning and tolerancing handbook episode 2 part 2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Table 6-8A Datums Datums Reprinted by permission of Effective Training Inc. Concept Term ASME SYMBOL OR EXAMPLE SYMBOL OR EXAMPLE Centerpoint of a circle as a datum None None ISO A line element of the cylinder is used as the datum. 5460 Common axis formed by two features A single datum axis may be established by two coaxial diameters. Each diameter is designated as a datum feature and the datum axis applies when they are referenced as co-datums A-B . A common axis can be formed by two features by placing the datum symbol on the centerline of the features. 1101 The method shown may also be used. Differences Between US Standards and Other Standards 6-15 Table 6-8B Datums Datums Reprinted by permission of Effective Training Inc. Concept Term ASME SYMBOL OR EXAMPLE SYMBOL OR EXAMPLE Datum axis ISO 6-16 Chapter Six 0 0 M ABC 0 Datum symbol is placed on the extension line of a feature of size. OR Placed on the outline of a cylindrical feature surface or an extension line of the feature outline separated from the size dimension. OR Placed on a dimension leader line to the feature of size dimension where no geometrical tolerance is used. OR Attached above or below the feature control frame for a feature or group of features. 0X-I 0 Datum symbol is placed on the centerline of a feature of size. OR Placed on the outline of a cylindrical feature surface or an extension line of the feature outline separated from the size dimension.

TỪ KHÓA LIÊN QUAN
TÀI LIỆU MỚI ĐĂNG
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.