CNC Machining Services for Custom Parts
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ISO 9001 & ISO 4001 & IATF 16949
Our services
Affordable machined parts in any quantity.
Our in-house machining and finishing services offer cost-effective solutions for both short-run and high-volume production.
Top Quality
Partzcore is capable of manufacturing and inspection to precise tolerances, even achieving +/-0.005 mm tolerances
100% Guarantee
If the parts do not meet your drawing requirements, we guarantee 100% return or exchange.
CERTIFICATE
IATF 16949, ISO 14001, ISO 9001
Factory View
40 sets of 5-axis CNC machines and 2 sets of 6-axis CNC machines
Custom CNC Machining Services
CNC machining parts can be processed with a diameter of 1.0-32MM, and the machining accuracy can reach 0.005mm. The current equipment utilization rate is 70%.
CNC Milling
CNC Milling
We provide 3-axis, 4-axis, 5-axis milling services to quickly turn your ideas from basic straight lines into detailed geometric shapes.
Quote Now CNC Turning
Wire EDM Machining
Wire EDM Machining
This method uses electrical current to remove conductive materials from the part, leaving a smooth surface that needs no further processing.
Quote Now Surface Treatment
Surface Treatment
Finishing techniques boost looks, surface strength, and rust protection. Choices include powder coating, anodizing, plating, polishing, and others.
Quote Now CNC Machining Metal Materials
- Aluminum 6061
- Aluminum 5052
- Aluminum 2024
- Aluminum 6063
- Aluminum 7050
- Aluminum 7075
- Aluminum MIC-6
Aluminum is a great material for machining because it’s lightweight, it has good mechanical properties, it conducts heat and electricity well, and it’s corrosion resistant. The aluminum alloys we use for CNC machining are 6061, 7075, and 2024. These alloys give us a good balance of strength, ease of machining, and cost.
- Copper 260
- Copper 360
Brass is an alloy made of copper and zinc. This gold-colored material is resistant to weather and corrosion, with tensile strength similar to mild steel. It is also easy to machine, allowing for high feed rates and minimal coolant use.
- Copper 101
- Copper C110
Copper is a metal that resists corrosion, conducts electricity very well, and is highly flexible. Its shiny orange-red color is easy to recognize, and it looks nice even when it forms a bluish-green coating called patina due to natural oxidation. However, copper's weldability is considered moderate to poor.
- Copper C932
- Stainless Steel 303
- Stainless Steel 316/316L
- Stainless Steel 416
- Stainless Steel 410
Stainless steel is ideal for various CNC machining projects due to its excellent machinability and uniformity. It also has good workability and weldability for specific machining needs, along with high ductility and formability to meet any project's specifications.
Zinc Alloy
- Titanium (Grade 2)
- Titanium (Grade 5)
Titanium is popular for CNC machining because of its excellent strength-to-weight ratio, corrosion resistance, and biocompatibility. However, machining titanium is challenging due to its high strength, low thermal conductivity, and tendency to harden during cutting.
Partzcore can process other sheet metal materials upon request. Please contact our experts about the materials you need.
CNC Machining Plastic Materials
Partzcore offers the following materials for both our standard and custom plastic CNC Machining.
ABS
ABS is a low-cost engineering plastic that is easy to machine. It is perfect for structural applications where impact resistance, strength, and stiffness are needed.
Acetal
Delrin 570 is an acetal homopolymer with 20% glass fiber filler. It offers high stiffness, minimal warping, and low creep, ensuring excellent performance at higher temperatures.
PVC
Polyvinyl Chloride (PVC) is a highly versatile plastic widely used in many industries for its excellent resistance to corrosion, strong strength-to-weight ratio, and cost-effectiveness.
PC
Polycarbonate (PC) is a versatile engineering plastic known for its excellent dimensional stability, strength, and stiffness. It’s the ideal choice for parts requiring clarity and impact resistance.
PMMA
Acrylic is popular because it is clear, lets light pass through, and resists UV rays. It is used in many things, like signs, displays, lenses, and light covers.
POM
Delrin, also called POM, it has great stiffness, low friction, and outstanding wear resistance. These qualities make it ideal for uses that need strong mechanical strength, like gears, bushings.
Available Finishes
This finishing option is the fastest available. Parts may have visible tool marks and possibly sharp edges or burrs, removable on request. The surface quality matches a 125 uin Ra finish.
You can use sandblasting to peel paint, smooth out rust, take bumps and mars from stuff, and basically make things clean. Ironically, you can also sandblast things to scuff them up by etching the surface and give something a little bit of ‘tooth’ so that paint will stick better.
Type II anodizing enhances corrosion resistance. It allows parts to be colored in various shades like clear, black, red, and gold, typically for aluminum. Type III provides a thicker, wear-resistant layer as well as the corrosion resistance of Type II.
This method uses vibrating media to smooth and polish CNC parts, removing sharp edges and burrs. It also eliminates machine marks on outer surfaces.
This process involves spraying powdered paint onto a part, which is then heated in an oven. The result is a tough, wear- and corrosion-resistant coating, more robust than traditional paint methods. A broad range of colors is available for achieving the desired look.
Enhances corrosion resistance for 200 and 300 series steels, as well as precipitation-hardened steels. The thickness is extremely thin, approximately 0.0000001”. Complies with ASTM A967, AMS-QQ-P-35, MIL-STD-171, ASTM A380, and AMS 2700.
Plating involves coating a conductive surface with a thin metal layer. This method is often used to prevent corrosion, enhance durability, modify surface friction, and boost aesthetics.
CNC Machining Tolerances
Maximum Part Size
Milled parts up to 2,032 x 1,219 x 610 mm. Lathe parts up to 1,575 mm length and 813 mm diameter.
General Tolerances
Metal tolerances will be maintained within +/- 0.127 mm following ISO 2768 standards unless stated otherwise. For plastics and composites, the tolerance is +/- 0.254 mm.
Precision Tolerances
Partzcore is capable of manufacturing and inspection to precise tolerances, even achieving +/-0.005 mm tolerances, as per your drawing specifications.
Minimum Part Size
0.50 mm. The extent of this may vary based on the geometry of the part and the selected material.
ADVANCED QUALITY CONTROL EQUIPMENT
Equipment Name | Precision | Brand | Origin | Qty |
Image Tester | 0.001mm | KEYENCE | Japan | 4 |
Image Measuring Instrument | 0.001mm | Hexagon | China | 1 |
X-ray Tester | 1PPM | Tian Rui | China | 1 |
Roughness Tester | 0.001mm | Mitutoyo | Japan | 1 |
Force Measuring Instrument | 0.01N | Zhongkejierui | China | 1 |
Concentricity Tester | 0.001mm | Si Dier | China | 1 |
Projector | 0.001mm | Wan Hao | China | 4 |
Magnifier | 0.0001mm | mitutoyo、Nikon | Japan | 3 |
Rockwell Hardness Tester | HRC0.5 | Shen Zhen Jing Te | China | 1 |
Digital temperature tester | 1℃ | TES | China | 1 |
Contourgraph | 0.0001mm | Mitutoyo | Japan | 1 |
Digital Force Tester | 0.01 kgf | SHIMPO | China | 1 |
Push-pull Meter | 0.5kg/2N | Sundoo | China | 2 |
DC Resistor | x0.001mΩ | Zheng Yang | China | 1 |
ROHS Tester | 1PPM | Tian Rui | China | 1 |
CNC Machining Design Guidelines
When you design the inside edges, make sure the vertical corner radius is at least one-third the depth of the pocket. You can use a diameter tool with the recommended pocket depth for the corner radii you want.
If you use corner radii that are a little larger than the recommended values, you can cut with a curved path instead of a sharp 90-degree angle. This will give you a better surface finish. If you need a 90-degree angle, it’s better to use a T-bone undercut rather than reducing the corner radius.
To make holes, machinists use drill bits or end mills. Use standard drill bit sizes in metric or imperial units to specify the hole diameter in your design.
Any dimension above 1mm is possible. For holes that need to be very accurate, we use reamers and boring tools. For holes under 20mm that need to be very accurate, use standard diameters.
In CNC machining part design, the maximum depth you should specify for any hole is four times its nominal diameter. You can go 40 times this depth, but the nominal diameter ratio is 10 times.
When creating CNC-machined parts, the smallest thread size typically used is M2, but M6 or larger is generally preferred. Machinists can reduce the risk of tap breakage by using CNC threading machines for cutting threads as small as M6.
The minimum thread length should be 1.5 times the nominal diameter, with a recommended length of three times the nominal diameter. For threads smaller than M6, it is necessary to add an unthreaded length at the bottom of the hole equal to 1.5 times the nominal diameter. For threads larger than M6, threading the hole throughout its length is optimal.
Due to the limited cutting length of end mill tools, it's recommended that the cavity depth in any design should be no more than four times its width. If the depth-to-width ratio is lower, it can lead to better chip removal, but it also increases tool deflection and vibration.
Is your CNC design demanding deeper cuts? One effective solution is to use a variable cavity depth along with a specialized cutting tool.
It might be necessary to label parts with their numbers or your company name. Adding text can look impressive on custom CNC designs but takes a lot of time to do. Using electrochemical etching or laser marking is usually a better option.
CNC Machining Applications
Rapid Tooling
CNC machining is ideal for producing fixtures or molds because it can precisely cut a wide range of strong materials, including aluminum 5052 and stainless steel.
Rapid Prototyping
The inexpensive metal alloys (like 6061 aluminum) and plastics (like acetal or ABS) we offer, combined with the speed of our machinists, make our online CNC machining services perfect for prototyping.
End-Use Production
Performance finishes, tight tolerances down to +/- 0.005mm, and known material selections make CNC machining the best choice for end-use parts.
Which industries rely on CNC machining?
CNC machining is important in a lot of different industries because it’s accurate and efficient. Some of the key industries are:
- Aerospace
- Automotive
- Medical
- Electronics
- Industrial Machinery
- Consumer Goods
CNC Machining FAQs
CNC machining, also known as Computer Numerical Control machining, is a process that uses computer-operated machines to create precise and intricate parts from different materials.
- Precision and Accuracy
- Increased Efficiency
- Repetitive Operations
- Versatility
- Complex Geometries
- Flexibility and Customization
- Improved Safety
- Lower Error Rate
- Time and Cost Savings
CNC machining services are a great way to get custom parts made to your specifications. They use computer-controlled machines to make your parts. Here are some things you can expect from CNC machining services:
- Material Selection
- Design and Programming
- CNC Machining Process
- Quality Assurance
- Finishing and Post-Processing
- Packaging and Shipping
- Collaboration and Communication
CNC (Computer Numerical Control) machines can control tools along various axes. Using these machines, manufacturers can create substantial parts based on a computer design file.
CNC machining is a subtractive process that removes material from an aluminum piece to shape it. These machines rely on computer designs and follow precise instructions. CNC machines are used in both prototyping and final production.
The main advantage of CNC machining is its accuracy and speed. Initially, these machines required machinists to manually input instructions.
There are various methods to remove material from stock using CNC machines, such as drilling, lathes, milling, turning, tapping, and grinding. The milling machine, which is similar to the drilling method, is among the most popular.
Partzcore can implement methods compatible with your project needs.
Prices begin at approximately $50, but can change based on the design's complexity, the quantity needed, and the delivery time. The best way to get an accurate estimate is to submit a 3D CAD model and receive an interactive quote, including design for manufacturability (DFM) feedback.
The typical minimum wall thickness is 0.8 mm for metals and 1.5 mm for plastics.
Designers and engineers always try to push the limits of making the parts lighter, thinner and more versatile. But there’s always a limit. And if the limit exceeds the part’s quality will be jeopardized.
The wall thickness may be dependent upon the CNC machine itself. Depending on the capability and quality of the machine the wall can be made thinner than that. Also, lower-quality machines cannot make a wall as thinner as a high-performance machine could.
Starting from just 1 piece.
In China, there is no universal minimum order quantity (MOQ) for aluminum machining services. Each company has its own MOQ requirements. Generally, larger companies are not interested in small orders, while smaller companies may not deliver the quality you need.
This is where Partzcore steps in. We accept low volume and high mix orders. Regardless of how small your order is, we prioritize quality over quantity.
we can help
Provide Customized Solutions
Contact Partzcore(sales@partzcore.com) to get a free quote and expert advice on custom metal parts. Our team will provide the right solution for your project.
Tell Us What You Need
Please share your specific needs with us, including drawings, reference images, and your ideas, so we can turn them into reality.
Professional Team
We will analyze your requirements and drawings to provide the optimal solution, along with a detailed quote within 24 hours.
Approve for Mass Production
Upon receiving your approval and deposit, we will proceed with mass production and manage the shipping process.
