AGMA 1006-A97-1997
塑料齿轮的齿比例

Tooth Proportions for Plastic Gears

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标准号

AGMA 1006-A97-1997

发布日期

1997年08月07日

实施日期

废止日期

无

发布单位

US-AGMA

适用范围

1.1 Basic rack This standard defines a basic rack for spur and helical plastic gears. However, the specific basic rack can be applied to any type of gear which employs the basic rack concept to help define its geometry. NOTE: This basic rack is an optional alternative to other AGMA basic racks. It will often be preferred for those applications in which tooth bending strength is a major factor in the design of plastic gears. A detailed description of the basic rack concept, including its features and its application to various types of gears, is given in annex A. The data for three other basic racks, differing primarily in depth of engagement, are given in annex B. 1.2 Gear tooth proportions This standard shows how basic rack dimensions determine the tooth proportions of the gear once the tooth thickness has been established. Specific values of the gear tooth thickness and the resulting gear tooth proportions are not covered by this standard. However, many of the considerations that go into such a selection are discussed in annex C. The tip relief from a modified basic rack is discussed in annex D. 1.3 Non-traditional practices for defining tooth proportions 1.1 Basic rack This standard defines a basic rack for spur and helical plastic gears. However, the specific basic rack can be applied to any type of gear which employs the basic rack concept to help define its geometry. NOTE: This basic rack is an optional alternative to other AGMA basic racks. It will often be preferred for those applications in which tooth bending strength is a major factor in the design of plastic gears. A detailed description of the basic rack concept, including its features and its application to various types of gears, is given in annex A. The data for three other basic racks, differing primarily in depth of engagement, are given in annex B. 1.2 Gear tooth proportions This standard shows how basic rack dimensions determine the tooth proportions of the gear once the tooth thickness has been established. Specific values of the gear tooth thickness and the resulting gear tooth proportions are not covered by this standard. However, many of the considerations that go into such a selection are discussed in annex C. The tip relief from a modified basic rack is discussed in annex D. 1.3 Non-traditional practices for defining tooth proportions manufacture. These practices include modifying standard basic racks, creating custom designed basic racks, and designing tooth proportions without reference to basic racks. In the annexes, the description of each method is accompanied by potential advantages and design cautions. An example of one procedure for the last method,designing without reference to basic racks, is presented in annex F.