A kind of CNC processing smooth transient method and seamlessly transit device

The invention discloses the smooth transient method of a kind of CNC processing and seamlessly transit device.Described method, for exporting the pulse that can control servo controller, goes to control servomotor by servo controller described in described pulsed drive, to realize the track processing of described servomotor.Described method includes the acquisition seamlessly transitting parameter；The acquisition of the radius of target transition circle segmental arc: according to seamlessly transitting parameter and the arc radius preset, it is thus achieved that transition circle segmental arc, carries out error detection and obtains target transition circle segmental arc and corresponding radius described transition circle segmental arc；The acquisition of interpolation order parameter: re-start trajectory planning according to two line segments, target transition circle segmental arc, obtain interpolation order parameter；The acquisition of pulse: carry out interpolation calculating according to described interpolation order parameter, obtain described pulse.Present invention achieves the flatness of CNC processing part, meet certain requirement on machining accuracy, and realize simple, the construction cycle is short, function-stable.