Product application
Donghui Precision Machinery is a leader and innovator in the manufacturing of high-end precision components, offering unparalleled quality and performance. We excel in the development and production of intelligent automation equipment, adeptly serving a diverse range of industries including:
- Medical and Biotech,where we deliver cutting-edge high-precision components and innovative solutions that enhance the performance and reliability of medical devices.
- Semiconductors,where we play a pivotal role in supporting the intricate demands of chip manufacturing and provide robust core components essential for related equipment.
- New Energy,where we actively contribute to the efficient, sustainable, and forward-thinking development of new energy equipment, driving global energy solutions.
- Automotive,where we deliver essential components that fuel innovation in the automotive industry, particularly in the realms of intelligent and electric vehicle development, elevating the future of transportation.
Main Products
- Our specialty lies in non-standard customized components, expertly crafted to serve the nuanced needs of the medical, automation, semiconductor, and automotive industries.
Why choose us
Core Advantages
- A fleet of meticulously maintained and state-of-the-art over 300 top-tier and industry-leading branded, high-precision machines, covering a wide range of equipment categories, and expertly engineered to meet an extensive array of machining needs across industries.
- Backed by an impressive 20 years of production experience, we boast unparalleled technical and process advantages.
Cutting-edge production equipment
Precision Inspection Equipment
Quality Ensurance
Incoming Material Inspection
Before any raw materials find their way into our warehouse, they are meticulously scrutinized through rigorous chemical composition analysis and physical property testing. It's imperative that suppliers furnish a Certificate of Origin alongside a Declaration of Conformity, each adorned with their official seal, guaranteeing the utmost authenticity and compliance.
In-Process Quality Checks
Throughout the machining process, parts are subjected to an unwavering series of inspections to verify dimensions and tolerances align perfectly with the set specifications. This vigilant strategy ensures that no defective parts proceed to subsequent stages, effectively curtailing the risk of large-scale production of non-conforming goods.
First Article Evaluation
Our First Article Inspection (FAI) system is an integral shield against potential issues, adeptly halting the mass production of flawed parts before they even begin. By implementing a precise and robust FAI process, we significantly reduce quality risks, ensuring our products meet the highest standards of excellence from the outset.
Comprehensive Final Inspection
Before shipment, each meticulously crafted part is subjected to an exhaustive inspection process that assesses dimensions, appearance, functionality, and any special customer specifications. This rigorous check ensures that only parts of the highest quality reach our valued customers, safeguarding against the dispatch of non-conforming products.
Packaging & Shipping
Company Profile
Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., a beacon of excellence since its inception in 2009 (originally founded in 2002), has dedicated over two decades to the art of high-precision component machining and pioneering technical research. Our unwavering commitment to precision and innovation propels us to the forefront of the industry. Our company has amassed a wealth of technical expertise and an enviable market reputation, setting a benchmark in the precision machining sector.
Proudly operating four state-of-the-art production bases strategically located in the industrial hubs of Shenzhen and Guiyang, supported by a dedicated team of over 400 highly skilled employees, Donghui has meticulously crafted a comprehensive industry chain. From cutting-edge research and development to precision-driven production and seamless delivery, we efficiently meet and surpass diverse customer requirements with exceptional 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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