Product application
Donghui Precision Machinery is dedicated to the cutting-edge manufacturing of high-end precision components that meet the most stringent quality standards, and the development along with the production of intelligent automation equipment. We proudly serve a diverse range of industries, including:
- Medical and Biotech: Delivering unparalleled high-precision components and pioneering solutions tailored for the medical devices sector.
- Semiconductors: Enhancing chip manufacturing and associated equipment with our core, highly reliable components.
- New Energy: Playing a pivotal role in the efficient and sustainable advancement of new energy equipment.
- Automotive: Supplying essential components that foster innovation in the automotive industry, including the development of intelligent and electric vehicles.
Main Products
- Our offerings include non-standard customized components, extensively serving the medical, automation, semiconductor, and automotive industries with unmatched precision and quality.
Why choose us
Core Advantages
- A fleet of: Discover our expansive fleet, a testament to our commitment to excellence. over 300: With an impressive ensemble of over 300 machines, we elevate the standards of precision and efficiency. branded: Our selection includes only top-tier, branded equipment that stands the test of time. machines: These machines are meticulously curated to deliver precise results tailored to your needs., covering a wide range of equipment categories, capable of meeting various machining needs across industries: Spanning a comprehensive range of categories, our machinery is adept at catering to a multitude of industry machining requirements, ensuring versatility and adaptability.
- 20 years of production experience, with rich technical and process advantages: With a legacy of 20 years in production, we are enriched with profound technical knowledge and process expertise, solidifying our status as a frontrunner in the industry.
production equipment: Our cutting-edge production equipment promises unmatched precision and reliability.
Inspection Equipment: Our inspection equipment is designed to ensure the highest standards of quality and accuracy in every product we deliver.
Quality Ensurance
In-coming Material Inspection
Before any raw materials are welcomed into our storage, they are subjected to a rigorous chemical composition analysis and a comprehensive physical property testing. It is mandatory for suppliers to present a Certificate of Origin alongside a Declaration of Conformity, complete with their official seal, ensuring trust and transparency.
In-Process Inspection
During the machining process, a vigilant and ongoing inspection of each part is crucial. This ensures that all dimensions and tolerances are in perfect alignment with the prescribed specifications. By adopting this proactive strategy, we effectively halt defective parts from advancing to subsequent stages, thereby preventing the proliferation of non-conforming batches.
First Article Inspection
The First Article Inspection (FAI) is a strategic initiative aimed at preempting any potential discrepancies before they can lead to extensive defective production. Our FAI process is meticulously designed to be accurate and effective, playing an indispensable role in minimizing quality risks and safeguarding the consistency of product excellence.
Final Inspection
Every part is subjected to a meticulous final inspection that scrutinizes dimensions, appearance, functionality, and any bespoke customer specifications prior to dispatch. This rigorous scrutiny ensures that only the highest quality, conforming parts reach our customers, upholding our commitment to excellence.
Packaging & Shipping
Company Profile
Established with a solid foundation in 2009 (originally founded in 2002), Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. has dedicated over two decades to mastering the intricacies of high-precision basic component machining. Our pioneer spirit in technical research has paved the way for a legacy of excellence throughout these 20 years. We pride ourselves on the wealth of technical expertise and the stellar market reputation we have amassed over the years, making us a leader in precision engineering.
With four strategically located production bases, nestled in the dynamic cities of Shenzhen and Guiyang, and bolstered by a dedicated team of over 400 passionate employees, Donghui has meticulously crafted a comprehensive industry chain. From cutting-edge research and development to seamless production and timely delivery, we excel at meeting the diverse needs of our clientele with unparalleled 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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