Product application
Donghui Precision Machinery is dedicated to the manufacturing of high-end precision components and the development and production of intelligent automation equipment, serving industries including:
- Medical and Biotech: Providing high-precision components and innovative solutions for medical devices.
- Semiconductors: Supporting chip manufacturing and related equipment with core components.
- New Energy: Contributing to the efficient and sustainable development of new energy equipment.
- Automotive: Providing critical components to drive innovation in the automotive industry, including intelligent and electric vehicle development.
Main Products
- Non-standard customized components, widely serving the medical, automation, semiconductor, and automotive industries.
Why choose us
Core Advantages
- A fleet of over 300 branded machines, covering a wide range of equipment categories, capable of meeting various machining needs across industries.
- 20 years of production experience, with rich technical and process advantages.
production equipment
Inspection Equipment
Quality Ensurance
In-coming Material Inspection
All raw materials must undergo chemical composition analysis and physical property testing before being accepted into the warehouse. Suppliers are required to provide a copy of the Certificate of Origin for the material, along with a Declaration of Conformity stamped with their official seal.
In-Process Inspection
Parts are continuously inspected during machining to ensure that size and tolerances conform to the specifications. This proactive approach helps prevent defective parts from moving to the next stage, thus avoiding large batches of non-conforming products (NG).
First Article Inspection
FAI is a proactive measure designed to identify potential problems and issues before a large volume of defective parts are produced, preventing unnecessary scrap. We have implemented an effective and accurate FAI process, which plays a crucial role in mitigating quality risks and ensuring consistent product quality
Final Inspection
Each part must undergo a thorough inspection covering dimensions, appearance, functionality, and any special customer requirements before shipment. This ensures that no non-conforming parts are sent to customers
Packaging & Shipping
Company Profile
Donghui Precision Machinery Co., Ltd. was established in 2009 (founded in 2002), focusing on high-precision basic component machining and related technical research over the past 20 years. We has accumulated extensive technical expertise and market reputation.
With four production bases located in Shenzhen and Guiyang, and a workforce of over 400 employees, Donghui has developed a complete industry chain from research and development to production and delivery, efficiently and quality-meeting diverse customer needs.
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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