Round hole machining method and round hole machining device
US9862034B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2014 |
| Grant date | Jan 9, 2018 |
| Priority date | — |
| Expiry date | Mar 21, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/37518
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A round hole machining method and a round-hole machining device in which machining can be accurately performed regardless of a residual stress caused by casting. An out-of-round hole machining device, which carries out inner diameter machining for a bore in a cast cylinder block includes the following: a stress deformation amount correspondence table that stores, for each portion of the cylinder block, a stress deformation amount based on stress that resides in the cylinder block during casting; a machining shape prediction section that predicts the machining shape on the basis of the stress deformation amount read from the stress deformation amount correspondence table; and a motor control unit that reverses the predicted machining shape with respect to a target shape and carries out reverse machining on a workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.