May. 23, 2026
What aspects should be considered when determining the workpiece clamping method in CNC machining?
When determining the positioning datum and clamping scheme, the following three points should be noted:
1) Strive for consistency between the design, process, and programming calculation datums.
2) Minimize the number of clamping operations, aiming to machine all surfaces after a single positioning operation.
3) Avoid using manual adjustments that require machine time.
4) The fixture should be easily accessible, and its positioning and clamping mechanisms should not interfere with the tool feed during machining (e.g., causing collisions).
In such cases, a vise or a base plate with screws can be used for clamping.
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