Workpiece weighing system for conditioning grinders
US4459783A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1982 |
| Grant date | Jul 17, 1984 |
| Priority date | — |
| Expiry date | Aug 3, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B49/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A weighing system for a grinding machine which calculates the weight of material removed by the grinding machinery during a grinding procedure. Power signals from a watt meter indicate the power consumed by the motor driving the grinding wheel. The weight of the material removed since the previous calculation is then periodically calculated from the power signals. This incremental weight removal value is then added to the sum of a previously calculated incremental weight removal values to provide an indication of the total weight removed from the workpiece. The calculation also includes a coefficient indicative of the grinding efficiency of the grinding wheel which, in turn, is a function of the density and hardness of the material in the workpiece, the grinding characteristics of the grinding wheel, and the peripheral velocity of the grinding wheel. The peripheral velocity may be calculated by multiplying a signal from a tachometer that is proportional to grinding wheel rotational velocity by the radius of the grinding wheel. The radius of the grinding wheel may be determined by sensing the position of the grinding wheel spindle when the grinding wheel makes contact with the workp…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.