| Nowadays, because sophisticated technology plays an increasingly important role in national defense, aviation, aerospace and other fields, it has become the main criterion for judging the technological level of the manufacturing industry. As the primary method of sophisticated, lapping technology has attracted increasing attention. Some key technologies of CNC lapping machine are investigated deeply funded on accessing lots of references and information on lapping both at home and abroad. The main researched contents are as follows:1) The mathematic model of lapping machine with planetary double plain is fulfilled, and the trajectory model of platen's movement relative to the workpiece (containing trays) is established using homogeneous coordinates transform。The instructive conclusions are reached after simulations and analysis of the model are completed, which lays the theoretical foundations for designing lapping machine tool, selecting and optimizing the processing parameters.2) Design of the lapping machine bed, column and beam is fulfilled. The statics analysis of the beam is achieved using finite element method.3) Based on the CNC system -"NUM POWER1060", the NC system of the lapping machine is developed. The programs for homing automatically and PLC programs are implemented after the corresponding parameters are set. The whole machine is tuned up to realize the simultaneous movement of five axes, which prepares the ground for curve lapping. Finally, the lapping pressure is researched with force /position hybrid control.4) The motion precision detection of servo feed is carried out and the error is compensated, which greatly improved the accuracy of the machine.
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