How to find the CNC vertical lathe workpiece positioning reference plane?
2023-09-14 15:14:35

In CNC vertical lathe, it is very important to find the positioning reference plane of the workpiece, which determines the position and direction of the workpiece to ensure accurate processing results. The following are some common methods to find the positioning reference plane of CNC vertical lathe workpiece:

1. Design drawings and process documents: First, carefully read the CNC vertical lathe drawings and related process documents to determine the design and requirements of the workpiece. Drawings are usually marked with information about the positioning datum plane, such as the position and size of the datum point or datum plane.
2. Three-point positioning method: The three-point positioning method is one of the commonly used methods to determine the datum. Determine the position and direction of the workpiece by selecting three non-collinear feature points on the workpiece and selecting the corresponding positioning holes or positioning tables on the workpiece table.
3. Dihedral angle positioning method: The dihedral angle positioning method is suitable for workpieces that are symmetrical or have planar symmetry. Determine the position and direction of the workpiece by selecting two parallel planes on the CNC vertical lathe workpiece as the reference plane, and then selecting the corresponding positioning surfaces on the workpiece table.
4. Coplanar positioning method: The coplanar positioning method is suitable for situations where there is a plane on the workpiece that can be aligned with the plane on the workpiece table. By selecting these two planes as coplanar, the positioning datum plane of the CNC vertical lathe workpiece is a coplanar plane.
5. Other auxiliary tools: You can also use auxiliary tools, such as positioning blocks, positioning pins, clamps, etc., to assist in determining the positioning reference plane of the workpiece. These tools work with features on the workpiece to ensure accurate positioning.

When performing CNC vertical lathe, the appropriate positioning method can be selected according to the specific shape, size and processing requirements of the workpiece. Before determining the positioning datum plane, ensure accurate adjustment and calibration of the machine tool and workpiece table to ensure stable workpiece position and precise machining results. At the same time, according to actual needs, necessary compensation and correction can be made in conjunction with CNC programming and process requirements to ensure the accuracy and quality of the final processing result.

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