Method and system for optimized vibration welding
US7810699B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2009 |
| Grant date | Oct 12, 2010 |
| Priority date | — |
| Expiry date | Apr 22, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K20/10
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of minimizing mechanical resonance in an assembly during formation of a vibration-welded joint therein includes positioning work pieces such that they are directly adjacent to each other, and generating a set of control signals that cause one or more sonotrode weld heads to vibrate. A waveform characteristic of a mechanical oscillation of the sonotrode(s) and weld head(s) is varied to minimize the mechanical resonance occurring in the assembly, such as a multi-cell battery for a vehicle. An apparatus for forming the welded joint includes at least one sonotrode having a weld head or heads formed integrally therewith, and a weld controller. The controller is connected to a converter, sonotrode(s), and weld head(s), with the mechanical oscillation occurring in the sonotrode(s) and weld head(s). Variation of the control signals during formation of the welded joint varies a waveform characteristic of the mechanical oscillation, thus minimizing the mechanical resonance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.