Numerical simulation of the static interference fit for the spindle and chuck of high speed horizontal lathe

摘要

Spindle and chuck are critical units of the the high speed horizontal lathe, while the interference fit between the chuck and spindle is one of most important factors influencing the performance of the high speed horizontal lathe. To simple structure of geometry form regulation, the static and dynamic formulas are derived for the calculation of interference fit and analysis of the stress by the theories of theoretical mechanics, materials mechanics and elastic mechanics. But to the complicated structure spindle and chuck, the fault having no way to calculate a precise is had a surplus of measuring the analytical solution. In order to solve this problem, Finite element method is adopted to study them according to contacting theory. Finally, the interference fit between the the chuck and spindle of the high speed horizontal lathe made in Qiqihar Heavy CNC Equipment Corp. Ltd is determined. Result is indicated that simulating value and the experiment fits fairly good, and this method is a dood way to solve the interference fit between the chuck and spindle, and it realizes to forecast the performance of interference fit between the chuck and spindle of the high speed horizontal lathe.