CNC machining parts are actually index-controlled machining parts. After the design drawings are written into the program, the computer is connected to the CNC machine tool, and the operation of the CNC machine tool is controlled through programming to complete the machining of precision workpieces. CNC machining is mainly suitable for the machining of small batches and various types of workpieces, and the precision of CNC machining parts is very high. Let's take a look at the self-inspection process of CNC machining parts.
Method/Step
1. The CNC lathe processor must clearly see the content of the process card before processing, clearly know the part, shape, and drawing size of the workpiece to be processed, and know the processing content of the next process.
2. Before the workpiece is clamped, it is necessary to measure whether the blank size meets the requirements of the drawing. When the workpiece is clamped, it must be carefully checked whether its placement is consistent with the programming operation instruction.
3. Self-check should be carried out in time after rough machining is completed, so that the data with errors can be adjusted in time. The main content of self-inspection is the position and size of the processing part.
(1) Whether the workpiece is loose;
(2) Whether the workpiece is correctly divided;
(3) Whether the size from the part of the CNC machined part to the reference edge (reference point) meets the requirements of the drawing;
(4) The position and size of the CNC machining parts relative to each other. Measure the roughed shape ruler (except arcs) after checking the position dimensions.
4. Finish machining after rough machining self-inspection. After finishing, workers should conduct self-inspection on the shape and size of the processing part: check the basic length and width of the processing part on the vertical plane; measure the base point size marked on the drawing for the processing part on the inclined plane.
5. Workers complete the self-inspection of CNC machining parts and confirm that they are in line with the drawings and process requirements before they can remove the workpiece and send it to the inspector for special inspection.