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Flourish Legend has established itself as a professional manufacturer specializing in precision CNC machining service of PMMA. Regardless of the precision and complexity of the custom CNC acrylic products, we are capable of providing automated machining processes, comprehensive project management, cutting-edge assembly lines, and efficient logistics services. Our mission has always been to assist customers in manufacturing high-quality CNC acrylic parts at competitive prices and with fast delivery times. PMMA, as a common plastic sheet material, finds wide applications in industries such as construction, architectural furniture, and more. Discover immediately how you and your company can leverage our services.
Polymethyl methacrylate (PMMA), also known as acrylic or organic glass, is a high molecular weight polymer. The acrylic for CNC is highly transparent, cost-effective, and easy to machine, making it a commonly used substitute for glass.Industries where machining PMMA finds wide applications include:
CNC machining is an advanced manufacturing technique widely used in the industry. Here are four advantages of using CNC machining for PMMA (Polymethyl Methacrylate) material:
CNC PMMA machining provides highly accurate machining capabilities, which is crucial for producing high-precision CNC acrylic parts. By utilizing computer-controlled precision tool paths, CNC machines can achieve precise CNC plastic cutting, acrylic milling and bending operations, ensuring the accuracy of the final product's dimensions and shapes.
Machining PMMA material exhibits excellent plasticity and processability, allowing for the production of various shapes and intricately designed parts. CNC PMMA machining, by generating precise cutting paths based on the designed CAD models, can accurately fabricate complex shapes, curves, and surface details on PMMA material.
CNC PMMA machining is an efficient manufacturing method that can automate complex cutting operations, significantly improving production efficiency. Once the programming is set, CNC machines can run continuously and stably without the need for manual intervention, reducing operator workload and the possibility of human errors. This makes CNC machining PMMA material an ideal choice for batch production and large-scale manufacturing.
CNC machining allows for quick changes to the machining process and parameters, providing greater flexibility. If design modifications or new CNC machining acrylic parts need to be produced, they can be easily achieved by simple modifications to the CNC program. Additionally, CNC machining including 5 axis CNC machining service enables high reproducibility, ensuring precise control and guarantee of the size, shape, and quality of each part, even in large-scale production.
Polymethyl methacrylate (PMMA), also known as acrylic or organic glass, is a polymer with high transparency, low cost, and ease of mechanical processing. The CNC acrylic is commonly used as a substitute for glass and finds wide applications in various fields such as construction, decorative, advertising, electronics, communications, and transportation. PMMA's properties can be described as follows:
| Properties | Performance | Description |
| Physical Properties | Lower Density | PMMA has a density of approximately 1.15-1.19 g/cm³, which is half that of glass (2.40-2.80 g/cm³) and 43% of aluminum (a lightweight metal). |
| High Mechanical Strength | With a molecular weight of around 2 million, CNC machining acrylic is a long-chain polymer that exhibits high mechanical strength. Its tensile and impact resistance are 7-18 times higher than ordinary glass. Through heat treatment and stretching, CNC acrylic can achieve improved toughness. For instance, when a nail is driven into this treated PMMA, it won't crack even if pierced, and it doesn't shatter when penetrated by a bullet. As a result, stretched custom CNC acrylic is used for bullet-resistant glass and cockpit canopies in military aircraft. | |
| Lower Melting Point | PMMA has a lower melting point compared to glass, significantly lower than temperatures around 1000 degrees Celsius. | |
| High Light Transmittance | Visible Light: PMMA is one of the most transparent polymer materials, with a light transmittance of 92%, surpassing that of glass. | |
| Ultraviolet (UV) Light: While quartz can fully transmit UV light, its high cost limits its practical use. Ordinary glass only transmits 0.6% of UV light. Custom acrylic can effectively filter out UV light with wavelengths below 300nm, although its filtering efficiency is less effective between 300nm and 400nm. Some PMMA CNC manufacturers apply coatings to the surface of PMMA to enhance its filtering properties in the 300nm to 400nm range. Additionally, Machining PMMA exhibits better stability under UV irradiation compared to polycarbonate. | ||
| Infrared (IR) Light: Machining PMMA allows infrared light with wavelengths below 2800nm to pass through. It can effectively block longer-wavelength IR, primarily those below 25,000nm. Special colored Machining PMMA variants exist that selectively transmit specific wavelengths of IR while blocking visible light, making them suitable for applications such as remote control or thermal sensing. | ||
| PMMA's glass transition temperature is approximately 105°C. | ||
| Chemical Properties | Colorless and Transparent | PMMA exhibits a transparency of 90%-92% and possesses high toughness, more than ten times that of silica glass. |
| Weathering Properties | Excellent Optical, Insulating, Processing, and Weathering Properties. | |
| Soluble | Soluble in organic solvents such as carbon tetrachloride, benzene, toluene, dichloroethane, chloroform, and acetone. | |
| High transparency and brightness | Good heat resistance, and characteristics of toughness, hardness, and rigidity. The heat deformation temperature is 80℃, and the bending strength is 110 MPa. | |
| Density | 1.14-1.20 g/cm³; deformation temperature: 76-116℃; molding shrinkage: 0.2-0.8%. | |
| Linear expansion coefficient | 0.00005-0.00009/℃; heat deformation temperature: 68-69℃ (74-107℃)." |
Custom acrylic sheets have good processing properties, and the common processing methods are as follows:
Cutting: CNC acrylic panels can be cut using manual or automatic cutting machines. When cutting, make sure the saw blade is sharp and at a moderate speed to avoid melting or cracking.
Drilling: Acrylic custom panels can be drilled using a drill bit. When drilling, choose a suitable drill bit at a moderate speed to avoid melting or cracking due to overheating.
Hot bending: Use a heat gun, hot bending machine or other heating equipment to heat the acrylic plate to a certain temperature and then bend it. During the heating process, the temperature should be kept uniform to avoid deformation or bubbles caused by local overheating.
Polishing: You can use polishing machines, grinding wheels, cotton wheels and other tools to polish the surface of the acrylic plate to improve the surface finish. When polishing, pay attention to the moderate speed and avoid overheating.
Engraving: Acrylic plates can be engraved by an engraving machine or laser engraving machine to achieve various patterns and text. When CNC acrylic engraving, choose appropriate tools and parameters to avoid damaging the material.
Bonding: You can use special acrylic glue to bond acrylic panels. When bonding, make sure the contact surface is clean and flat to improve the bonding strength.
Milling: You can use CNC milling acrylic to mill out complex product parts.
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