15 Fakultätsübergreifend / Sonstige Einrichtung

Permanent URI for this collectionhttps://elib.uni-stuttgart.de/handle/11682/16

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Author: search.filters.author.Spur, GünterSubject: search.filters.subject.670

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    Methods for reducing thermal influences on the accuracy of machine tools
    (1977) Spur, Günter; Lechler, Gerhard; Heisel, Uwe
    As the automation of manufacturing process is increasing and because higher machining accuracy is mandatory the disturbance variables influencing the performance of machine tools must be controlled. This paper attempts to give a survey of the present knowledge of the thermal behaviour of machine tools. The effects of thermal disturbances are described and compared with other disturbances. Common methods for the investigation of the thermal behaviour are presented. The methods for reducing thermal disturbances are classified under different topics. Known methods are summarized.
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    Automatic compensation of thermal disturbances in machine tools
    (1977) Spur, Günter; Heisel, Uwe
    This study deals with a practical method of reducing the effects of thermal disturbances upon the accuracy of machine tools by controlled feed adjustment at the tool. The spatial displacement between the cutting tooI and the workpiece closely correlates with the temperature increase in the machine tool. The equation which describes the relation between the displacement and the temperature for a certain operating condition can be written as a linear combination of temperature values. One of the major conditions for the application of these equations is a good reproducibility of the thermal behaviour. The implementation of this method in a computerized numerical system is very simple. Experiments with lathes have shown that this way leads to reasonable results.