Product application
Donghui Precision Machinery is passionately committed to the artful crafting of high-end precision components, along with the pioneering development and production of intelligent automation equipment. Our expertise serves a vast array of industries including:
- Medical and Biotech: Offering impeccable high-precision components and groundbreaking solutions for the advancement of medical devices.
- Semiconductors: Delivering essential support for chip fabrication and related equipment through our core components.
- New Energy: Playing a pivotal role in the sustainable and efficient advancement of new energy equipment.
- Automotive: Supplying critical components that drive forward innovation within the automotive sector, focusing on intelligent and electric vehicles.
Main Products
- Non-standard customized components, extensively catering to the diverse needs of the medical, automation, semiconductor, and automotive industries.
Why choose us
Core Advantages
- A robust fleet of over 300 renowned machines,spanning a wide array of equipment categories, enabling us to fulfill a multitude of machining requirements across various industries.
- With 20 years of profound production experience, we possess substantial technical and process advantages.
Production Equipment
Inspection Equipment
Quality Ensurance
Incoming Material Inspection
All raw materials must successfully pass through rigorous chemical composition and physical property assessments before being accepted into the warehouse. Suppliers must also provide a certified Certificate of Origin for the materials, along with a stamped Declaration of Conformity.
In-Process Inspection
During machining, parts are meticulously inspected to ensure that dimensions and tolerances meet stringent specifications. This proactive strategy prevents defective parts from progressing to subsequent stages and avoids large batches of non-conforming products.
First Article Inspection
FAI is an anticipatory measure designed to uncover potential challenges before producing large volumes of defective parts, thus averting unnecessary waste. Our rigorous and precise FAI process is crucial for minimizing quality risks and ensuring steady product excellence.
Final Inspection
Before shipment, each part is subject to a comprehensive inspection that covers dimensions, appearance, functionality, and any specific customer requirements, guaranteeing that only conforming parts are dispatched to our customers.
Packaging & Shipping
Company Profile
Donghui Precision Machinery Co., Ltd., established in 2009 (originally founded in 2002), has been dedicated to high-precision basic component machining and associated technical research over the past two decades. We have amassed extensive technical expertise and cultivated a sterling market reputation.
With four state-of-the-art production bases strategically located in Shenzhen and Guiyang, and a highly skilled workforce of over 400 dedicated employees, Donghui has developed a comprehensive industry chain from R&D to production and delivery, efficiently fulfilling a wide range of customer requirements with quality assurance.
Workshop Display
Certifications
FAQ
1. What is CNC machining?
CNC (Computer Numerical Control) machining is a manufacturing process where pre-programmed computer software controls the movement of machinery and tools. It's used for a wide range of materials, including metal, plastic, and wood.
2. What materials can be used in CNC machining?
CNC machines can handle a variety of materials such as:
- Metals (aluminum, steel, titanium, brass, copper)
- Plastics (ABS, POM, nylon, acrylic)
- Wood and composite materials
- Ceramics and more.
3. What is the difference between CNC milling and CNC turning?
- CNC Milling: Involves rotating the cutting tool and moving it along multiple axes to remove material from a workpiece.
- CNC Turning: Involves rotating the workpiece and using a stationary cutting tool to remove material, mainly for cylindrical parts.
4. How do I choose the right CNC machining service?
Factors to consider include:
- Material requirements
- Tolerance and precision
- Production volume
- Lead time
- Cost-effectiveness
5. What is the typical lead time for CNC machining?
Lead times depend on the complexity of the part, the material, the required finish, and the production volume. Typically, CNC machining can take anywhere from a few days to a couple of weeks for a prototype or small batch, but larger orders may take longer. Normally 7 days for prototyping and 20 days for mass production shipment.
6. What is the maximum size of a part that can be CNC machined?
The size limitations depend on the specific CNC machine being used. Large-scale machines can accommodate parts up to several meters in length, while smaller machines are typically limited to parts around 1000mm in length or less.
7. What is the accuracy and tolerance of CNC machining?
CNC machining offers high precision, with tolerances typically ranging from ±0.01mm to ±0.1mm. However, the exact tolerance will depend on the machine and the material used.
8. How much does CNC machining cost?
CNC machining costs vary based on factors such as:
- Material choice
- Part complexity
- Machine time
- Labor costs
- Quantity (prototypes vs. mass production)
9. What types of finishes can be applied to CNC machined parts?
Common finishes include:
- Anodizing
- Powder coating
- Polishing
- Painting
- Bead blasting
- Electroplating
10. Can CNC machining be used for prototyping?
Yes, CNC machining is widely used for prototyping because it allows for the quick production of precise parts. It's ideal for low-to-medium volume production runs and allows engineers to test designs and make adjustments before mass production.
11. What are some common applications of CNC machining?
CNC machining is used across various industries, including:
- Aerospace and aviation
- Automotive
- Medical devices
- Consumer electronics
- Industrial machinery
12. What are the common challenges in CNC machining?
- Tool wear: As tools wear out, they affect the quality of the parts being machined.
- Material properties: Different materials behave differently during machining, requiring adjustments to the process.
- Programming complexity: Complex designs may need advanced programming skills and specialized machines.
13. How can I ensure the quality of CNC machined parts?
Quality can be ensured through:
- First Article Inspections (FAI)
- In-process inspections
- Final inspections
- Use of quality control tools like CMM (Coordinate Measuring Machine)
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