Adaptive Grinding Process (AGriPro) – Prevention of Thermal Damage using OPC UA Technique and in-Situ Metrology

Description

The authors introduce two approaches to minimize the safety margin thus optimize the process’ economic efficiency. Both control concepts use the feed rate override of the machining operation as regulating variable to eliminate thermal damage of the edge zone. The first control concept is developed to avoid thermal damage in cylindrical plunge grinding by controlling the cutting forces. Therefore, the industrial standard OPC Unified Architecture (OPC UA) is used for the communication between a PID-controller and the SINUMERIK grinding machine tool control system. For non-circular workpieces, grinding conditions change over the circumference. Therefore, thermal damage cannot be ruled out at any time during the grinding process. The authors introduces a second novel control approach which uses a micro-magnetic measure that correlates with thermal damage as the main control variable. Hence, the cutting ability of the grinding wheel and thermal damage to the workpiece edge zone is quantified in the process. The result is a control concept for grinding of non-circular workpieces, which opens up fields for major efficiency enhancement. With these two approaches, grinding processes are raised on higher economic level, independently of circular and non-circular workpiece geometries.

Period	27 Oct 2017
Event title	2017 International Conference on Sustainable Manufacturing (ICSM)
Event type	Conference
Location	Shanghai, ChinaShow on map
Degree of Recognition	International