Contents and scope of CNC machining self inspection

1. Before processing, the processor must clearly see the contents of the process card, clearly know the parts to be processed, shapes, dimensions of drawings and know the processing contents of the next process.

2、 Before clamping the workpiece, measure whether the blank size meets the drawing requirements. When clamping the workpiece, carefully check whether the placement is consistent with the programming operation instruction.

3. After rough machining, self inspection shall be carried out in time so as to adjust the data with errors in time and effectively. The content of self inspection is mainly the position and size of processing parts. For example: (1). Whether the workpiece is loose; (2). Whether the workpiece is correctly divided; (3). Whether the dimension from the processed part to the reference edge (reference point) meets the drawing requirements; (4). Position and dimension of machining parts. After checking the position and dimension, measure the rough machined shape ruler (excluding arc).

4. Finish machining can only be carried out after rough machining and self inspection. After finishing, the workers shall conduct self inspection on the shape and size of the processed parts: inspect the basic length and width of the processed parts of the vertical surface; measure the base point size marked on the drawing for the processed parts of the inclined surface. 5。 The workers can remove the workpiece and send it to the inspector for special inspection after completing the self inspection of the workpiece and confirming that it is in conformity with the drawings and process requirements.