Before clamping the workpiece, clean all surfaces to prevent oil, iron filings and dust from sticking, and use a file (or whetstone) to remove burrs on the surface of the workpiece.
The surfaces of the high-speed iron used for clamping and thread pitch must be ground with a grinder to make it smooth and flat. The code iron and nut must be strong and can reliably clamp the workpiece. Some small workpieces that are difficult to clamp can be directly clamped on the tiger; the machine tool workbench should be clean and free of iron filings, dust, and oil; the pad iron should generally be placed At the four corners of the workpiece, if the span is too large, it is necessary to add contour pads in the middle.
According to the size of the drawing, use a ruler to check whether the length, width and height of the workpiece are qualified.
When clamping the workpiece, according to the clamping and placement method in the programming work instruction, consider avoiding the processed parts and the situation where the tool head may encounter the fixture during processing.
After the workpiece is placed on the pad, the datum plane of the workpiece must be drawn according to the requirements of the drawing. For workpieces that have been ground on all six sides, the verticality must be checked to see if they are qualified.
After the workpiece is drawn, be sure to tighten the nut to prevent the workpiece from shifting during 17-4ph stainless steel cnc machining due to loose clamping; pull the form again to make sure the error does not exceed the tolerance after clamping.