Pdf [verified] | Jis B 1702-1
The JIS B 1702-1 standard, titled "Cylindrical gears — ISO system of flank tolerance classification — Part 1: Definitions and allowable values of deviations relevant to flanks of gear teeth," is the definitive Japanese technical guideline for gear accuracy. The current version, JIS B 1702-1:2016, aligns Japanese industrial practices with international ISO standards to ensure global interchangeability. 1. Scope and Application
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Part 1 Focus: Definitions and allowable values for deviations relevant to the flanks of gear teeth. The JIS B 1702-1 standard, titled "Cylindrical gears
JIS B 1702-1 focuses on "flank deviations," which are errors in the physical shape and positioning of the gear teeth: Deviation Type Description Single Pitch Deviation fptf sub p t end-sub Scope : The standard applies to spur and
- Scope: The standard applies to spur and helical gears with a pitch circle diameter of up to 1000 mm.
- Normative References: The standard references other JIS standards and international standards, such as ISO 1328-1.
- Terms and Definitions: The standard defines various terms related to gears, including pitch circle, tooth thickness, and gear ratio.
- Gear Tooth Profiles: The standard specifies the gear tooth profiles, including the tooth shape, pressure angle, and gear ratio.
- Gear Accuracy: The standard defines the accuracy grades for gears, including the permissible deviations for tooth thickness, pitch, and profile.
- Inspection: The standard outlines the inspection methods for gears, including visual inspection, measurement of tooth thickness, and gear tooth profile inspection.
- Gear manufacturers
- Machine designers and engineers
- Quality control and inspection personnel
- Researchers and developers in the field of gear technology
Scope and purpose
- Establishes common terms and definitions related to industrial protective gloves.
- Provides basic performance and construction requirements to ensure minimum safety and interchangeability.
- Serves as a foundation for subsequent parts in the JIS B 1702 series that address specific glove hazards (mechanical, chemical, thermal, electrical, etc.).
Helix (Lead) Deviations: Accuracy along the width of the gear tooth. 3. The Tolerance Classification System