Induction sensing method for locating center of metallic nozzle tip
US11994412B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2021 |
| Grant date | May 28, 2024 |
| Priority date | — |
| Expiry date | Oct 17, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2999/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An induction sensing method for identifying the center of a tip surface of a nozzle of print head of a 3D printer includes providing an eddy current sensor in a fixed position and providing a metal nozzle with a tip orifice in a main body and a tip surface about the tip orifice. The method includes moving the metal nozzle over the eddy current sensor in a predetermined motion path above the eddy current sensor while the eddy current sensor remains stationary and samples the magnitude of inductance in a generated inductive field, thereby generating a curve representing the inductive field. The method includes identifying a maximum amplitude of the curve to identify the center of the tip surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.