IN-PROCESS CONTROL WITH A SENSORY TOOL HOLDER TO AVOID CHATTER
Journal Title: Journal of Machine Engineering - Year 2018, Vol 18, Issue 3
Abstract
Hydro-, steam- and gas- turbines, aircraft components or moulds are milled parts with complex geometries and high requirements for surface quality. The production of such industry components often necessitates the use of long and slender tools. However, instable machining situations together with work pieces with thin wall thickness can lead to dynamic instabilities in the milling processes. Resulting chatter vibrations cause chatter marks on the work piece surface and have influence on the tool lifetime. In order to detect and avoid the occurrence of process instabilities or process failures in an early stage, the Institute for Production Engineering and Laser Technology (IFT) developed an active control system to allow an in-process adaption of machining parameters. This system consists of a sensory tool holder with an integrated low cost acceleration sensor and wireless data transmission under real time conditions. A condition monitoring system using a signal-processing algorithm, which analyses the received acceleration values, is coupled to the NC- control system of the machine tool to apply new set points for feed rate and rotational speed depending on defined optimisation strategies. By the implementation of this system process instabilities can be avoided.<br/><br/>
Authors and Affiliations
Friedrich BLEICHER, Paul SCHÖRGHOFER, Christoph HABERSOHN
Keywords
Related Articles
- EP ID EP376419
- DOI 10.5604/01.3001.0012.4604
- Views 60
- Downloads 0
Application of bat-cell bio-ambient tests in exhaust gas emissions examinations for Euro 4 and Euro 6 combustion engines
The introduction of the subsequent European emission standards raises controversy among vehicle manufacturers and researchers. In order to meet the legal requirements, it is necessary to continually improve not only the...
COMPARISON OF STATIC AND DYNAMIC LASER BASED POSITIONING METHODS FOR CHARACTERIZATION OF CNC MACHINES
In the paper we compare the laser based measurements of linear parameters of numerically controlled machines. A new dynamic method of measuring machine positioning is described and compared with the widely used static m...
THE ANALYSIS OF ENVIRONMENTAL AND HUMAN IMPACTS OF USING STRONG ALKALINE WATER FOR COOLING DURING MACHINING
An eco-friendly manufacturing approach is important for the environment. Enhancing machining performances is not only required to improve product’s quality, time saving, and reduces costs; it is also contributed to the...
INFLUENCE OF LINEAR FEED DRIVE CONTROLLER SETTING IN CNC TURNING LATHE ON THE STABILITY OF MACHINING
The paper deals with the influence of linear feed drive controller setting of a CNC turning lathe on the stability of machining. A coupled simulation model of feed drive control and ball screw drive mechanics with a tra...
INCREASING PRODUCTIVITY OF CUTTING PROCESSES BY REAL-TIME COMPENSATION OF TOOL DEFLECTION DUE TO PROCESS FORCES
The Internet of Production (IoP) describes a vision in which a broad range of different production data is available in real-time. Based on this data, for example, new control types can be implemented, which improve indi...