Product application
Donghui Precision Machinery is passionately committed to the crafting of high-end precision components that embody excellence and innovation, while spearheading the development and production of cutting-edge intelligent automation equipment, catering to a broad spectrum of industries such as:
- Medical and Biotech: Delivering high-precision components and groundbreaking solutions for the advancement of medical devices.
- Semiconductors: Enhancing chip manufacturing and related equipment with our indispensable core components.
- New Energy: Pioneering the path for efficient and sustainable new energy equipment development.
- Automotive: Supplying pivotal components to fuel innovation in the automotive sector, particularly in intelligent and electric vehicle advancements.
Main Products
- Custom-crafted non-standard components, extensively serving the medical, automation, semiconductor, and automotive industries.
Why choose us
Core Advantages
- Our robust fleet comprises over 300 industry-leading branded machines,spanning a vast array of equipment categories, adept at fulfilling diverse machining requirements across multiple industries.
- With 20 years of profound production experience, we boast significant technical and process expertise.
State-of-the-art production equipment
Precision Inspection Equipment
Quality Ensurance
In-Coming Material Inspection
Every raw material undergoes rigorous chemical composition analysis and physical property testing before warehouse acceptance. Suppliers must provide an official Certificate of Origin and a Declaration of Conformity, stamped with their seal.
In-Process Inspection
Continuous part inspection during machining ensures that dimensions and tolerances meet specifications. This proactive strategy prevents defective parts from advancing, thereby avoiding large batches of non-conforming products (NG).
First Article Inspection (FAI)
FAI serves as a proactive strategy to preemptively address potential problems, preventing unnecessary scrap due to defective parts. Our precise and effective FAI process plays a pivotal role in lowering quality risks and ensuring consistent product excellence.
Final Inspection
Each part undergoes comprehensive inspection, assessing dimensions, appearance, functionality, and special customer requirements before shipment. This guarantees that no non-conforming parts reach our customers.
Packaging & Shipping
Company Profile
Founded in 2009 (originally established in 2002), Donghui Precision Machinery Co., Ltd. has focused on high-precision basic component machining and related technical research for over two decades. We have amassed extensive technical prowess and a sterling market reputation.
With four strategically located production bases in Shenzhen and Guiyang, and a dedicated team of over 400 employees, Donghui has cultivated a complete industry chain from research and development to production and delivery, adeptly meeting diverse customer needs with efficiency and quality.
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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