Involute gear profile artifact for large gear traceable metrology
US12429323B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2025 |
| Grant date | Sep 30, 2025 |
| Priority date | — |
| Expiry date | Jun 12, 2045 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H55/0806
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An involute gear profile artifact for large gear traceable metrology includes six surfaces, including an involute gear profile cylindrical surface for parameter transfer, a datum bottom surface and a datum top surface that are symmetrically arranged on upper and lower sides, a root datum surface and a tip datum surface that are arranged in parallel on front and rear sides, and an alignment datum surface oppositely arranged relative to the involute gear profile cylindrical surface; and a distance from the root datum surface to a corresponding base circle center is a design distance D. The artifact can meet the traceability requirements of the values of the large gear. The artifact makes up for the lack of standard measuring instrument in a traceable metrology system for a large-diameter involute gear, and improves a value traceability system for the large gear with a diameter greater than 500 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.