Point-based solution using Jacobian-Torsor theory into partial parallel chains for revolving components assembly
| Autor: | Zhi-Min Li, Sun Jin, Xun Ma, Siyi Ding, Fuyong Yang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Kinematic chain
0209 industrial biotechnology Mathematical optimization 020208 electrical & electronic engineering Maintainability Process (computing) Geodetic datum 02 engineering and technology Topology Industrial and Manufacturing Engineering Design for manufacturability symbols.namesake Cable gland 020901 industrial engineering & automation Hardware and Architecture Control and Systems Engineering Jacobian matrix and determinant 0202 electrical engineering electronic engineering information engineering symbols Point (geometry) Software Mathematics |
| Zdroj: | Journal of Manufacturing Systems. 46:46-58 |
| ISSN: | 0278-6125 |
| Popis: | Aero-engine rotors are mostly manufactured as an assembly of individual parts to keep manufacturability and maintainability. Assembly deviations are unavoidable because of parts’ geometrical errors which have significant influences on the reliability of subsequent assembling process, as well as the prospective fatigue durability and aerodynamic characteristics. While implementing the 3D deviation analysis in such kind of revolving components assembly, partial parallel connections like the bayonet circular connector are often simplified into a serial kinematic chain, which causes a great loss of physical constraints and deviation information to the reliability of the prediction results. This article focuses on a solution to solve partial parallel chains problem arising from the deterministic deviations. The proposed model regards locating points system as an assembly by virtue of unified Jacobian-Torsor theory. As a result, deviation sources can be grouped in a sequential manner which can describe the primary and secondary relation of localization datums. Contact points based torsors are represented and general deviation propagation formulas are established for n-stage components assembly. An example application of four-stage rotors assembly is presented to demonstrate this solution. |
| Databáze: | OpenAIRE |
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