Small CNC engraving machine feed movement scheme

Small body parts of the CNC engraving machine engraving machine is the skeleton, a pedestal, gantry, workbench, the nose and the spindle component parts. Small 3 shaft driving part of the CNC engraving machine all adopt stepper motor drive screw pair, by elastic shaft and screw pair connection, one end of the screw by deep groove ball, the other side using pairs of angular contact bearings fixed, can guarantee the axial can bear larger component and the motion precision, as shown in the figure below. Small ball screw drive for CNC engraving machine diagram first, small CNC engraving machine engraving cutter rotation of the driven only by high speed motor, feed, return the Z direction of the movement by the Z axis on the stepper motor to drive the ball screw. Secondly, using the movement of the beam, and the workbench fixed X, Y movement way, the nose in the beam ( X to) , the realization of carving width; Moving around the base beam, Y to) , the realization of carving length; The spindle component to move up and down, Z to) , the realization of carving depth [ 1] 。 Finally, in the X, Y, Z direction of the guide parts adopt cylinder linear guide, the guide accuracy can meet the requirements of the workbench positioning accuracy, on the premise of assure the mechanical stiffness of the whole system, in order to simplify the design of the structure, reduce the weight of the body frame made of duralumin selection standards of fasteners and positioning pin connection.