Method for manufacturing a large gear wheel and its engaging pinion based on wear and related device

By analyzing the wear parameters of the large gear and fitting NURBS surfaces, the conjugate tooth surface of the small gear was generated, the machining parameters were optimized, the meshing deviation problem caused by the wear of the small gear was solved, high-precision remanufacturing was achieved, maintenance costs were reduced and downtime was shortened.

CN122452045APending Publication Date: 2026-07-24XIAN UNIV OF TECH
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN UNIV OF TECH
Filing Date
2026-04-23
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In the use of paired gears, wear of the pinion causes the meshing contact area and transmission error to deviate from the design requirements, and directly replacing the paired gear set is costly.

Method used

By analyzing the wear parameters of the large gear tooth surface, correcting the theoretical tooth surface, constructing a NURBS surface fitting to obtain a digital real tooth surface, generating a fully conjugate tooth surface for the pinion, optimizing contact marks and transmission errors, and using a sequential quadratic programming algorithm to adjust the machining parameters, high-precision remanufacturing of the pinion is achieved.

Benefits of technology

Without replacing the large gear, reduce maintenance costs, shorten equipment downtime, ensure meshing performance and transmission accuracy, and improve the load-bearing capacity and operational reliability of the gear pair.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122452045A_ABST
    Figure CN122452045A_ABST
Patent Text Reader

Abstract

The application provides a method for manufacturing a small gear based on wear of a large gear and related devices, which comprises the following steps: obtaining wear parameters of the same side tooth surface of the large gear based on average normal deviation analysis of planned tooth surface measurement grid points on the same side tooth surface of the large gear measured; obtaining discrete coordinates of the worn tooth surface based on the wear parameters and the corrected theoretical tooth surface, and fitting the discrete coordinates of the worn tooth surface with a constructed NURBS surface to obtain discrete parameters of the digital real tooth surface of the large gear; transforming the discrete parameters of the large gear to obtain a completely conjugate tooth surface of the small gear; simulating the completely conjugate tooth surface of the small gear to determine contact marks and transmission error curve parameters, and constructing an optimal ease-off target tooth surface based on normal mismatch; constructing a minimum optimization model of tooth surface error square sum based on the optimal ease-off target tooth surface, and solving processing parameter adjustment; and obtaining processing adjustment parameters based on the processing parameter adjustment to manufacture the small gear. The method reduces material cost of gear sets and shortens the maintenance cycle.
Need to check novelty before this filing date? Find Prior Art