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November 3, 2019
This article stated 17 application skills of milling.
Milling is to fix the blank and use a high-speed milling cutter to cut out the required shape and features. Traditional milling is mostly used for milling simple shapes / features such as profiles and grooves. CNC milling machine can process complex shape and features.
Milling and boring machining center can be used for three-axis or multi axis milling and boring machining, for machining, mold, inspection tool, fixture, thin-walled complex surface, artificial prosthesis, blade, etc. When choosing the content of NC milling, we should give full play to the advantage and key role of NC milling machine.
In the actual production of milling, including machine tool setting, workpiece clamping, tool selection and other application skills, this issue briefly summarizes 17 key points of milling, each of which is worth your in-depth grasp.
Check the power capacity and rigidity of the machine to ensure that the machine can use the required milling cutter diameter.
Workpiece clamping conditions and considerations.
During machining, the tool overhang on the spindle shall be as short as possible.
Use the correct pitch of milling cutter suitable for the working procedure to ensure that there is not too much blade involved in cutting, otherwise vibration will be caused.
For narrow workpiece or gap milling, make sure that there is sufficient blade cutting.
Use positive front angle slot indexable blade as much as possible to ensure smooth cutting action and minimum power consumption.
By using the recommended maximum chip thickness, ensure the correct feeding of the blade to achieve the correct cutting effect.
Use milling as far as possible.
Workpiece material and configuration, as well as the quality requirements of the surface to be processed.
Select groove type and material according to material type and application type of workpiece.
For a long overhang that is more than 4 times the tool diameter, the vibration trend will become more obvious, and the use of vibration damping tools can significantly improve the productivity.
Select the most suitable main deflection angle.
Select the correct diameter according to the width of the workpiece.
Position the milling cutter correctly.
It can be seen that through arc cutting, the chip thickness is always zero when the tool is withdrawn, so that higher feed and longer tool life can be achieved.
Use coolant only if necessary. In general, milling is better performed without coolant.
Follow tool maintenance recommendations and monitor tool wear.
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