Acrylic milling cutter
Acrylic milling cutters from the manufacturer ✔ Over 30 years of experience ✔ Certified ✔ Quality made in Germany ✔
We specialize in the development and production of high-quality, precise tools used in various industries. By using the latest technologies and materials of the highest quality, we ensure exceptional performance and durability of our products.
Are you looking for high-quality acrylic milling cutters that impress with long tool life and flawless surfaces? Then you have come to the right place. Here you will find a large selection of single-edged spiral fluted solid carbide end mills with polished grinding.
We specialize in the development and production of high-quality, precise tools used in various industries. By using the latest technologies and materials of the highest quality, we ensure exceptional performance and durability of our products.
Are you looking for high-quality acrylic milling cutters that impress with long tool life and flawless surfaces? Then you have come to the right place. Here you will find a large selection of single-edged spiral fluted solid carbide end mills with polished grinding.
- long-term experience in acrylic and plastic processing
- long-term and cooperative partnership
- tools optimized for your needs
Experience
since 1991
Employees
more than 110
Made in Germany
100%
Certification
according to DIN EN ISO 9001
Advantages of our acrylic cutters
- Great toughness, edge strength and temperature resistance thanks to tungsten carbide
- polish-ground cutting edges and chip spaces -> particularly smooth surfaces
- suitable for machines with 30.000 -60.000 revolutions
- cutting speeds of VC 300 - 500 meters
- combination of optimum surface finish with maximum speeds and maximum feed rates
- no finishing necessary -> time saving
- special sizes available at short notice
We are here for you
If you have any questions about these or other topics, our friendly staff will be happy to help you at any time.
Benefit from the many advantages offered by Lehmann Präzisionswerkzeuge GmbH.
Benefit from the many advantages offered by Lehmann Präzisionswerkzeuge GmbH.
Acrylic milling cutter the most important points for selection
The number of cutting edges
Acrylic milling cutters are available with different numbers of cutting edges. Basically, a distinction is made here between single- and multi-bladed versions. We have briefly summarized the advantages of both systems here.
Acrylic milling cutters are available with different numbers of cutting edges. Basically, a distinction is made here between single- and multi-bladed versions. We have briefly summarized the advantages of both systems here.
Advantages of multi-bladed acrylic cutters
- The cutting edge is a wearing part. The more cutting edges the acrylic milling cutter has, the more cutting edges share the wear - the service life of the milling head increases.
- Acrylic milling cutters with multiple cutting edges run rounder than versions with one cutting edge.
- Due to the larger cross-section, more heat is dissipated toward the holder/spindle than with a single cutter - better cooling.
- The more cutting edges, the smaller the individual chips and the smoother the surface.
Advantage acrylic cutter with few cutting edges
- The acrylic milling cutter dips into the material more easily.
- The chip flute is larger and therefore the proportion of open area is larger
- Less risk of clogging
- Chips can be better removed to the outside.
Which variant is the better one depends on the material to be machined. In general, however, it is better to use cutters with one cutting edge for softer materials such as acrylic glass. Here, erosion is a secondary problem. It is more important to avoid clogging as far as possible.
Acrylic cutter the shape of the cutting edge
The cutting edge can be divided into two main shapes. Here there are versions with a stocky blunt and with a rather pointed sharp shape.
Strangled edge
- relatively blunt
- solid cutting edge body
- low fine grinding
- chip tends to upsetting
- well suited for solid materials
Stubbed cutting edges are usually designed with a face grinding. The face is flat and level. The advantage of this form is the stability and the smooth surface of the bottom when pocket milling. The disadvantage, however, is the poorer plunging and cutting result for materials with low strength.
Tip cutting edge
- rather sharp
- filigree cutting edge body
- large free grinding -> chips can flow off more easily
- especially suitable for materials of low strength such as plastics
In contrast to stocky cutting edges, the pointed versions are usually provided with a fishtail grinding. It is characterized by its v-shaped steep course. The advantage of this design is the easier plunging and smoother edges on wood, plastics and metals with low strength. However, the tool life is lower here. Also, the bottom has a poorer surface. Typically, circular structures are created.
When it comes to working with plastics such as acrylics,
it is best to use pointed cutting edges with steep grinding and large flutes.
it is best to use pointed cutting edges with steep grinding and large flutes.
Twist of the acrylic burrs
Another aspect that plays a role in the selection is the twist. Here, a distinction is made between versions with right-hand and left-hand twist. The main question here is how deep the milling has to be.
Right twist
- "upcut", normal shape
- Conveying the chips upwards
- Acrylic cutter lifts base material upwards, corkscrew effect
Left twist
- "downcut" (special form)
- Conveying of chips downwards or backwards towards the exposed groove
- Acrylic milling cutter presses base material against table, inverted corkscrew effect
- Not suitable for larger milling depths
Other factors to consider in the selection process include
In addition, there are numerous other factors that must be considered when selecting and using milling cutters. We have briefly summarized some of them for you here.
If you have any questions about these and other topics, our friendly staff will be happy to assist you at any time. Simply send us an inquiry and benefit from the numerous advantages of Lehmann precision tools.
- Coating
- Toothing
- Cutting edge length
- Clearance
- Diameter
- Cutter substrate
- Shank shape
If you have any questions about these and other topics, our friendly staff will be happy to assist you at any time. Simply send us an inquiry and benefit from the numerous advantages of Lehmann precision tools.
The most important information about acrylic milling
What you need to know about acrylic
Acrylic glass is a glass-like plastic from the group of thermoplastics. Its correct technical term is polymethyl methacrylate (PMMA for short). Due to many advantageous properties, acrylic is versatile. The most important are:
The most important areas of application for acrylic glass:
- Break resistance and stability
- Brilliant optical effect due to polished edges
- Light transmission
- UV stability
- Frost and heat resistance
- Suitable for years of outdoor use.
- Easy to clean: fingerprints and even scratches can be easily removed
- Considerably cheaper than glass
The most important areas of application for acrylic glass:
- Window construction
- Facade construction
- Production of advertising spaces
- Company signs
- Room dividers
- Shower partitions
- Acrylic furniture
- Picture frames
- Eyeglass lenses
- Jewelry making
Requirements for acrylic milling
Acrylic glass is a material that can be processed in many ways. In addition to milling, laser cutting, drilling, jig sawing, table sawing and hand circular sawing are also possible. Acrylics can also be cut by hand. To do this, they are usually first scored and then cut through.
The most important aspect of cutting acrylic is cooling. If the acrylic cutter gets too hot, the material can melt and cause the cutter head to stick. Therefore, cooling should be used. Minimum quantity lubrication with soapy water is often recommended. Another option is to use compressed air. This variant offers the advantage that the chip spaces are blown free, which prevents clogging. In connection with heat generation, the speed of rotation should also be taken into account. For acrylics, it should be as low as possible. The feed on the other hand should be set higher so that the chip flow is optimal.
Basically, the point is that productivity is increased with the cutting speed. At the same time, the wear of the cutting edges also increases with the cutting speed. It is therefore important to find the optimum balance between cutting speed and wear. The right cutting data play a major role here. Feed rate, rotational speed, speed and infeed must be matched to the material of the workpiece. The next section explains exactly what needs to be taken into account.
The edges are also particularly important when processing acrylic glass. In mechanical processes, they must be repolished in a separate work step in order to develop their full smoothness and brilliance. The more precise the milling process, the less reworking is required afterwards.
The most important aspect of cutting acrylic is cooling. If the acrylic cutter gets too hot, the material can melt and cause the cutter head to stick. Therefore, cooling should be used. Minimum quantity lubrication with soapy water is often recommended. Another option is to use compressed air. This variant offers the advantage that the chip spaces are blown free, which prevents clogging. In connection with heat generation, the speed of rotation should also be taken into account. For acrylics, it should be as low as possible. The feed on the other hand should be set higher so that the chip flow is optimal.
Basically, the point is that productivity is increased with the cutting speed. At the same time, the wear of the cutting edges also increases with the cutting speed. It is therefore important to find the optimum balance between cutting speed and wear. The right cutting data play a major role here. Feed rate, rotational speed, speed and infeed must be matched to the material of the workpiece. The next section explains exactly what needs to be taken into account.
The edges are also particularly important when processing acrylic glass. In mechanical processes, they must be repolished in a separate work step in order to develop their full smoothness and brilliance. The more precise the milling process, the less reworking is required afterwards.
Practical tips for working with the acrylic milling cutter
Select the right tool:
The correct operating parameters:
Cooling and lubrication:
- Always select the acrylic milling cutter to match the material.
- Use an acrylic milling cutter that is as short as possible and clamp it as far in as possible.
- For plastics, it is best to use milling cutters with polished flutes. This prevents the chips from sticking.
The correct operating parameters:
- Follow the recommended values when milling acrylics. During the milling process, you can further adjust the parameters to optimize the process.
- Basically rather lower speed, feed quietly higher for good chip flow.
- The more feed during roughing and the lower speed at the milling motor, the less heat is generated by friction
- For finishing, the speed can be higher and the feed rate lower, as less heat is generated.
- It is best to mill internal contours clockwise and external contours counterclockwise. This way the chips are always on the bad side.
- You should not mill deeper than 2 - 3 cutting edge diameters. Deeper grooves are best milled in several passes.
- Increase stock removal rate and economy by milling multiple passes at shallower depths and higher feed rates, rather than milling a deep groove more slowly in one pass.
Cooling and lubrication:
- The milling tool should be cooled at all times, either by lubricating emulsion or by compressed air. Compressed air has the advantage of removing chips. This keeps milling edges clear and eliminates the need for polishing.
- Lubrication improves surface quality and increases tool life. For acrylics, a lubrication of soap suds is usually used.
- If cooling is not possible, the speed should be selected according to the recommended specifications, but the feed rate should not be too small.
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Acrylic milling cutter
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