PMMA (Acrylic) CNC Machining Service
Get precision PMMA (Acrylic) CNC machined parts with outstanding optical clarity, dimensional accuracy, and surface quality. Our CNC machining capabilities produce detailed prototypes and production components with complex geometries, tight tolerances, and smooth finishes. PMMA is an excellent choice for transparent covers, display components, optical parts, enclosures, and other applications where appearance and precision are essential.
PMMA (Acrylic) in CNC Machining
PMMA (Polymethyl Methacrylate), commonly known as Акрил, is a lightweight engineering thermoplastic valued for its exceptional optical clarity, dimensional stability, and attractive surface finish. It machines cleanly and can be shaped into detailed components with accurate features and polished surfaces. PMMA is an excellent choice for transparent housings, display components, protective covers, light guides, optical parts, and precision prototypes where both appearance and functionality are important.
| Available PMMA Grades | PMMA Black, PMMA Transparent, PMMA White |
| Цена | $ |
| Срок выполнения заказа | Менее 10 дней |
| Толщина стенки | 0,75 мм |
| Допуски | ±0,125 мм (±0,005 дюйма) |
| Максимальный размер детали | 200 x 80 x 100 см |
PMMA CNC Machining Materials
Machined Acrylic (PMMA) Properties
PMMA (Acrylic) is a transparent engineering thermoplastic known for its excellent optical clarity, weather resistance, and smooth surface finish. Its balanced properties make it suitable for CNC machined parts that require both visual appeal and reliable performance.
Общие допуски при обработке на станках с ЧПУ
| Описание | Общий допуск или стандарт |
|---|---|
| Общие допуски на размеры | ±0.005″ (±0.127 mm) for metals; ±0.010″ (±0.254 mm) for plastics in line with ISO 2768-mK unless otherwise specified |
| Жесткие допуски | Down to ±0.001″ (±0.025 mm) available upon request, with detailed 2D drawings and GD&T specifications |
| Минимальный размер элемента | ~0.020″ (0.50 mm), depends on part geometry, tool diameter, and material |
| Допуск на диаметр отверстия | ±0.002″ (±0.05 mm) typical; tighter tolerances with boring or reaming |
| Плоскость/параллельность | ≤0.002″ per 6″ (≤0.05 mm per 150 mm), varies by material and fixture setup |
| Допуски на резьбу | Стандартная метрическая и имперская резьба по ISO/ASME; нестандартная или мелкая резьба - по запросу |
| Угловой допуск | ±0,5° обычно |
| Состояние краев | Острые края по умолчанию сломаны и зачищены, если не указано иное |
| Отделка поверхности (стандартная) | Ra 3,2 мкм (125 мкм) в обработанном виде; улучшенная отделка возможна с помощью полировки, дробеструйной обработки, анодирования и т.д. |
| Максимальный размер детали | Milling: Up to 80″ × 48″ × 24″ (2,032 × 1,219 × 610 mm) Turning: Up to 62″ length × 32″ diameter (1,575 × 813 mm) |
Advantages and Limitations of PMMA (Acrylic) CNC Machining
Brass machining offers numerous advantages, making it a popular choice for various industries. However, it is essential to consider both the benefits and limitations to determine if it is the right material for your specific application.
- Exceptional Machinability: Brass is highly machinable, allowing for precise and efficient machining.
- Устойчивость к коррозии: It offers high resistance to corrosion, making it suitable for harsh environments.
- Aesthetic Appeal: Its appearance is attractive and ideal for decorative and aesthetic applications.
- Good Conductivity: Brass has excellent thermal and electrical conductivity.
- Versatility: Brass can also be used in various industries, from electronics to plumbing.
- Higher Material Cost: Brass can be more expensive compared to some other metals.
- Potential for Dezincification: In certain environments, brass can suffer from loss of zinc, leading to weakened material.
Воплощайте свои проекты в жизнь с Elite Mold Tech
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- Надежные решения по требованию
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PMMA (Acrylic) CNC Machining FAQs
What speed is optimal for CNC machining acrylic?
The ideal CNC machining speed for acrylic depends on the part design, thickness, tooling, and required finish. Using higher spindle speeds with proper feed rates helps achieve smooth cuts while reducing the risk of cracking, melting, or chipping.
Which CNC tool is most effective for cutting acrylic?
Carbide and diamond-coated cutting tools are commonly used for acrylic CNC machining. These tools provide clean cuts, improve surface quality, and help reduce chipping during the machining process.
Is PMMA (Polymethyl Methacrylate) durable?
Yes, PMMA offers good durability along with excellent UV and weather resistance. It is suitable for indoor and outdoor applications where long-term clarity and stable performance are required.
Are CNC routers capable of cutting acrylic?
Yes, CNC routers can effectively machine acrylic when the correct tools and machining parameters are used. Proper cutting speed, feed rate, and tooling selection help achieve accurate parts with smooth finishes.