On the basis of heat transfer theory,taking the ballscrews of the feed system in machine tools as an example,we studied the causes and characteristics of thermal elasticity phenomenon,including frequency holding,thermal real-time and integrative deformation and phase shifting.By tests of unidimensional heat transfer,the changing rules of thermal dynamic characteristic are confirmed.We point out that the relationship between the thermal deformation and temperature rise will gradually reach a steady state,but...
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