CNC machining accuracy maintenance method

Before processing: Every day to open the machine tool to preheat the machine tool, regression machine tool coordinates, to ensure the accuracy of the machine tool processing.

Upper parts: attention should be paid to the alignment of the upper parts, to keep the alignment error not more than two wires (including plane and horizontal precision) , to find the reference angle and center should pay attention to the inspection device not more than 15 cm workpiece, avoid machining face and hole when pressing workpiece. In addition, the workpiece must be firmly clamped to prevent the workpiece due to clamping instability, flying out of injury. When using crane to lift large parts, pay attention to keep a certain distance between the workpiece and the machine to prevent the collision between the workpiece and the machine.

In processing: pay attention to cleaning the surface of the workpiece to keep the accuracy of tool setting, when drilling the reaming and positioning hole, pay attention to the completion of drilling hole in time with an air gun to clean the residual iron filings in the hole, to ensure that there will be no knife clamping phenomenon when the reaming hole, 3D machining should pay attention to find the reference angle when there is a gap offset, according to the actual offset tool compensation, fine machining tool speed can not be too fast, according to the 3D type and program trend, debugging feed. In addition, pay attention to the length of the clamping tool, in the case of not touching the workpiece, the shorter the clamping tool, the smaller the swing of the tool to ensure the accuracy of the workpiece.

The end of processing: Measuring Precision Hole and precision milling slot to ensure the precision of the workpiece after the assembly of the mold. 3D inspection has not finished milling to the surface and processing problems in a timely manner, to ensure a one-time processing molding.