Milling cutter for Plexiglas

The milling of Plexiglas or acrylic glass is one of the important processing options of the plastic product. However, the milling of acrylic glass is not completely unproblematic. Below we explain how to make acrylic glass. This then gives the corresponding information about the suitable milling cutter for Plexiglas.

What is plexiglass?

Plexiglas is the most well-known brand name of acrylic glass and is often used interchangeably. But here can be a significant difference - also and especially when milling. Plexiglas is acrylic, but not every acrylic is Plexiglas! The quality of the material can differ considerably here. The following data refers explicitly to Plexiglas.

Special features when milling Plexiglas

When milling Plexiglas, pay attention to the correct speed of the milling cutter and a suitable feed rate. The cutter itself is also crucial. The speed must be adjusted so that continuous milling is possible, but the Plexiglas does not overheat and then melts. Therefore, the speed of the milling cutter is rather low.

It is important that the milling courageously "goes forward". That is, the feed rate may well be slightly greater to ensure a clean milling.

Special features of the suitable milling cutter for Plexiglas

Now special attention is paid to the milling cutter. Here, a distinction is made between single, double and multi-bladed milling cutters. Since the feed rate has to be selected correspondingly high, the milling cutter must have a suitable helix angle (angle of the spiral). The twist angle determines how well the chip can be removed.

Of course, the more cutting edges a milling cutter has, the more the removal of the chips will deteriorate. Therefore, especially one- and two-edged cutters are particularly suitable for milling Plexiglas. With single-edged cutters, on the other hand, optimum balance of the machine must be ensured. If the tiller can not be balanced or the cutter produces a significant imbalance, pronounced chatter marks are inevitable.

Guide values ​​for optimal milling of acrylic glass

Based on these characteristics and special features when milling Plexiglas, the most important data that are crucial for milling.

Labor values ​​during milling:

  • Speed ​​of the milling cutter (Vc): 200 to 4500 rpm
  • Feed (f): 0.5 mm / rev maximum
  • Depth of cut (a): maximum 5 to 6 mm
  • Rake angle: 0 to 5 degrees
  • Clearance angle: 2 to 10 degrees

Please always take into account that there may be different deviations depending on the number of cutting edges and the thickness of the Plexiglas workpiece to be machined. Finally, a certain amount of expertise is required for the optimal milling of Plexiglas or acrylic glass.

Tips & Tricks

Of course, the care of the milling cutter is crucial. Here you can read about how to optimally clean a milling cutter.

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