This standard provides guidelines for the design, rating andapplication of globoidal wormgearing mounted with axes at a 90degree angle. This type of gearing is called double envelopingwormgearing in the United States, but the term globoidal is morecommonly used worldwide.
This standard discusses the two main categories of globoidalwormgearing manufactured in industry today: the traditional Hindleydesigns, and the more recently developed full contact designs. Thestandard presents the formulas for calculating general gearsetproportions for the globoidal designs and a rating procedure forHindley designs. It does not provide a detailed or completeprocedure for the design of gearsets and the cutting toolsrequired.
Globoidal wormgearing of the Hindley design has been used inindustrial applications for over 200 years. The manufacturers ofHindley wormgearing have each designed and built their own toolingto manufacture the gearing. TheHindley design uses a common basecircle to form all of the tooth profiles. The worm thread isgenerated by a cutting edge (line) rotating in a single plane.
The more recently developed full contact designs do not use aconstant base circle to form the tooth profiles. The worm thread isgenerated in multiple planes by a generating surface. Themanufacturers of full contact gearing have each conducted their ownresearch, and the details of their designs are proprietary to eachcompany. This design may provide increased load carrying capabilityover the Hindley design, but a standard rating method for fullcontact designs has not been established.
- Edition:
- A02
- Published:
- 01/01/2002
- ANSI:
- ANSI Approved
- Number of Pages:
- 51
- File Size:
- 1 file , 800 KB
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