Method of assessing three dimensional volumetric errors in multiaxis machine tools
US5841668A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 1997 |
| Grant date | Nov 24, 1998 |
| Priority date | — |
| Expiry date | May 30, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/41077
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method of assessing three-dimensional volumetric errors of multiaxis machine tools in three-dimensional working space is disclosed. Each three-dimensional volumetric error component can be systematically measured and analyzed on the modeling of polynominal functions in accordance with the volumetric errors and the kinematic chain in accordence with the corresponding machine tool. The method inputs the measured radial data performed on the three orthogonal planes, analyzing the parametric errors such as positional, straightness, angular, squareness, and backlash errors. The positional error components along each of three orthogonal axes are modeled as a dimensionless polynominal function with corresponding positional error coefficients. The method also can assess dynamic performance of the machine tools such errors due to the servo gain mismatch. The method employs the kinematic ball bar to assess the volumetric errors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.