Machine tool
US11707797B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 16, 2020 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | Jun 5, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23Q2017/001
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A machine tool includes a first spindle, a second spindle, and a joining means for joining the axial ends of workpieces gripped by the spindles to form a joined workpiece. The machine tool further includes an electric servomotor for moving the first spindle in the direction intersecting the axis of the first spindle, a current value detection means for detecting the current value of the electric servomotor, and a misalignment detecting means for detecting misalignment of a first workpiece and a second workpiece in the joined workpiece, based on the current value detected by the current value detection means when the joined workpiece gripped by the two spindles is rotated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.