The tool setting point is the starting point for the tool to move relative to the workpiece when machining a part on a CNC machining service center. Also known as "program starting point" or "starting point". The selection of tool setting points must comply with the following principles: it is easy to use digital processing and simplify programming; it is easy to find the correct on the machine tool, and the processing is easy to check; the processing error caused is small. The position of the tool setting point can be selected on the workpiece or outside the workpiece (such as a fixture or lathe), but it must have a certain dimensional relationship with the positioning reference of the part.
The tool setting point should be selected as much as possible on the design basis or process basis of the part. For example, if the workpiece is positioned with a hole, the center of the hole can be used as the tool setting point. The position of the tool is then aligned with this hole so that the "in-position point" and the "tool setting point" coincide. In this way, the efficiency of tool setting can be better improved and the processing quality can be ensured. Lathe cutting oil contains special additives for cutting. The release of additives can effectively protect the tool, reduce the wear of the tool and improve the accuracy of the workpiece. By reducing the number of tool changes to increase the operating time of the equipment, thereby greatly improving efficiency.