Motion control method for dual-spindle machining, dual-spindle machining apparatus and computer program product

The present application discloses a motion control method for dual-spindle machining and a dual-spindle machine apparatus. A control device performs data reconstruction of segmentation and checkpoint setting according to first and second data, respectively, to correspondingly form first and second instruction sequences, thereby simultaneously controlling two motion control cards, allowing two machining devices coupled at a back end of the motion control cards to perform machining on two opposite sides of a workpiece. With the checkpoints arranged in the instruction sequences, the machining devices each having one machining tool are provided with a collaboration mechanism, so that the control device is allowed to continue sending instructions of the next segment to the two motion control cards upon arrival of both the instruction sequences at the checkpoints. Thus, the simultaneous dual-spindle apparatus not only achieves the feature of high efficiency of single-side separate machining but also provides the feature of dual-side collaboration, solving the issue of damage caused by mutual interference during a synchronous dual-spindle operation.