JJD’S CNC machining Service
CNC, short for “computer numerical control”, is a metal manufacturing process to make custom-designed parts which are made of various materials including aluminum, stainless steel, copper, acrylic, etc. Advanced pre-set codes determine every movement of the cutting or shaping process. CNC machining is ideal for manufacturing precise parts and prototypes.
JJD, as a metal supplier, provides extraordinary CNC machining service including turning, milling, prototype manufacturing, surface treatment, etc. We pursue speed, accuracy and beauty and we embrace challenge all along the way.
Turning service
Turning is a major CNC machining process which can produce cylindric parts. Plastic or metal is rotated and a cutting tool is traversed to manufacture high-precision parts. Turning can be inside or outside of the cylinder.
Milling service
Milling, which is still one of the most common ways to manufacture metal parts, is a CNC machining process which cut and eliminate materials form the workpiece to shape a custom final product. Equipped with brilliant 3-axis, 4-axis and 5-axis machining processing centers, JJD is able to process products with complex parameters at high precision.
Surface treatment
As-Machined: The most popular and cost efficient way for inner functional components. Fine and even tool path is also good for aspect parts.
Bead Blasted: The part is left with a matt appearance. Range of 120 to 320 beads allows us to create different roughness to the surface.
Anodized: Type II creates a corrosion-resistant finish. Parts can be anodized in different colors—clear, black, red, and blue are most common—and is usually associated with low silicone element series of aluminum. Type III is thicker and creates a wear-resistant layer in addition to the corrosion resistance seen with Type II.
Powder Coat: This is a process where powdered paint is sprayed onto a part which is then baked in an oven. This creates a strong, wear- and corrosion-resistant layer that is more durable than standard painting methods. A wide variety of colors are available to create the desired aesthetic.
Our Advantages of CNC Machining
- Rapid Turnaround: Using the latest CNC machines, JJD produces highly accurate, quick turn parts in 1-3 days.
- Precision: Offers high-precision tolerances ranging from +/-0.001″ – 0.005″, depending on customer specifications.
- Custom Finishes: Select from a variety of finishes on solid metal and plastic parts, built to precise CNC machine parts design specifications.
- Scalability: CNC machining is perfect for production from the prototype to the large orders.
- Material Selection: Choose from over 50 metal and plastic materials. CNC Machining offers a wide variety of certified materials.
- Machining Capacity: We can produce the parts of almost any shape and design.
Inspection Equipment
Vernier Caliper, Micrometer, Height Gage, Hardness Tester, Two-dimensional image measuring instrument, TESA Micro-Hite 300, Mitutoyo surface Roughness Tester, Mitutoyo CMM and Ultrasonic Cleaner .
Our Equipments List
Fatured CNC Parts
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CNC Materials
CNC machining process can be performed on workpieces in variety of materials, including most metals and plastics. Common materials that are used in machining include the following:
| Material | Description | Benefits | Application |
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| ABS | Low cost engineering plastic that is easy to machine and fabricate |
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| PC(Polycarbonate) | Engineering plastic with excellent dimensional stability and good strength and stiffness over a wide
range of service temperatures. |
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| Polycarbonate 20% GF | 20% glass reinforced polycarbonate with higher temperature and tensile properties. |
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| Nylon 6/6 | Type 6/6 is a general purpose, standard grade nylon. Extruded in natural and black. |
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Ideal for metal replacement applications such as:
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| 30% GF Nylon | 30% glass-fiber reinforced nylon 6/6 material with superior abrasion and wear resistance. |
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| Delrin | Crystalline plastic that offers an excellent balance of properties that bridge the gap between metals and plastics. |
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| HDPE | HDPE is used in a wide variety of applications and industries where excellent impact resistance, high tensile strength, low moisture absorption and chemical and corrosion resistance properties are required. |
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| Polypropylene | Crystalline material noted for its high strength-to-weight ratio, excellent chemical resistance and high performance in thermoforming and corrosive environments. |
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| Clear Acrylic | Rigid, hard thermoplastic material that is characterized by its color range availability and easy fabrication. |
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| PVC | Normal impact, high corrosion resistant polyvinyl chloride |
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| G-10 FR4 | Versatile, all-around electrically insulating material |
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| Aluminum 6061 T6 | Generally selected where welding or brazing is required or for its high corrosion resistance in all tempers; Machining is more difficult when compared to the other machining alloys |
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| Aluminum 7075 T6 | Baseline 7XXX alloy with a good balance of properties required for aerospace applications |
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| Mic 6 | Similar to those in the 7000 series with precise adaptable additions of Zinc, Copper, Magnesium and components of Silicon, Iron and Manganese |
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| 303 Stainless Steel | Austenitic free-machining stainless steel used primarily for parts requiring machining, grinding or polishing |
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| Mild Steel | |||
| Stainless Steel | |||
| Tool Steel | |||
| Titanium | |||
| Zinc | |||
| Brass | |||
| Bronze | |||
| Copper | |||