(Helix Deviation): The deviation of the tooth trace from the ideal helical path. 3. Comparison: Old vs. New Standards
This standard applies specifically to . This primarily includes the common spur gears and helical gears found in countless industrial applications, from heavy machinery to precision robotics. Critically, it does not apply to entire gear pairs in mesh, focusing instead on the quality of the individual component itself . If your work involves bevel gears or plastic gears, other standards like JIS B 1704 or JIS B 1702-3 would be the appropriate references .
: Many Japanese gear companies (like KHK Gears) provide condensed versions of these tolerance tables in their technical catalogs for engineering reference. for a specific gear grade and module?
For any engineer manufacturing or procuring gears in Japan or adhering to Japanese Industrial Standards, understanding JIS B 1702-1 is non-negotiable. It is the primary reference for defining and inspecting the quality of spur and helical gears. jis b 1702-1 pdf
The standard measures several specific types of errors to determine a gear's grade: Jis B 1702-1 | PDF - Scribd
(Profile Deviation): How the actual tooth shape deviates from the perfect involute curve. fβf sub beta
Open your JIS B 1702-1 PDF to Section 5 (Classification). Decide the grade (usually 5, 6, 7, or 8). (Helix Deviation): The deviation of the tooth trace
is the Japanese Industrial Standard for gear precision, based directly on ISO 1328-1 Overview of JIS B 1702-1
: Measuring how much the actual tooth profile differs from a theoretical involute curve.
In practice, however, it is important to know that JIS B 1702-1:2016 includes a series of informative annexes (attached documents) that provide practical guidance for measurement and analysis, such as filtering data or evaluating pitch deviations, making it a highly practical document for manufacturing settings . New Standards This standard applies specifically to
JIS B 1702-1 is an indispensable tool for maintaining the quality and functionality of cylindrical gears in modern engineering. By understanding and utilizing the metrics defined in the standard, manufacturers can ensure that their gear products meet the required precision, resulting in quieter, more durable, and more reliable mechanical systems.
Finding a "JIS B 1702-1 PDF" is crucial for implementing proper design specifications and ensuring gear performance. This article explains the standard, its evolution, and where to locate the official document. What is JIS B 1702-1?