Ball nose end mill is a complex shape tool, it is an important tool for milling free-form surfaces. The cutting edge is a space-complex curve.
Advantages of using ball nose end mill:
A more stable processing state can be obtained: When using a ball-end knife for processing, the cutting angle is continuously changed, and there is almost no sudden change. In this way, the change of the cutting force is a continuous process of change, so that the cutting state can be ensured during processing. Stable, higher surface finish.
The ball-end tool is the ideal tool for semi-finishing and finishing of curved surfaces: the spindle motor we use is less able to resist axial force. Therefore, generally, the ball-end tool cannot be used for rough machining. In semi-finishing, It is very good to use a ball-end knife. After semi-finishing with a ball-end knife, there is less residual material, which is more conducive to the following finishing. The path spacing of semi-finishing is generally two quilts of the finishing spacing. If parallel cutting is used, it is best to be 90 degrees to the finishing direction.
Reduce the actual cutting radius: Just like using a bull nose knife, the use of a ball-end knife reduces the actual cutting diameter, reduces the cutting linear speed, reduces the cutting power and cutting torque during cutting, and is more conducive to the spindle motor Process in good condition.
The problems that should be paid attention to in the use of ball nose end mill:
Minimize the use of the tool tip to process the Workpiece: at the position of the ball nose tool tip, in actual processing, the processing linear speed is 0, that is to say, the tool is actually not cutting, but grinding, in actual processing , The coolant can not be added to the cutting area at all, which will further cause the cutting heat to be larger and the tool life to decrease.
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Post time: Dec-16-2021
