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.
- With an impressive legacy spanning 20 years in production, we boast unparalleled technical and process expertise that consistently elevates our capabilities.
Production Equipment
Inspection Equipment
Quality Ensurance
Incoming Material Inspection
To guarantee superior quality from the start, all raw materials undergo a meticulous chemical composition analysis and rigorous physical property testing prior to warehouse acceptance. Suppliers are mandated to provide both a Certificate of Origin and a Declaration of Conformity, each bearing their official seal as a testament to quality and authenticity.
In-Process Inspection
During the machining process, parts are subject to continuous and meticulous inspection to ensure precise adherence to size and tolerance specifications. This vigilant and proactive strategy effectively prevents defective parts from advancing to subsequent stages, thereby averting the production of large batches of non-conforming goods.
First Article Inspection
First Article Inspection (FAI) is a strategic initiative designed to uncover potential issues early, thereby preventing the proliferation of defective parts and reducing unnecessary waste. Our highly effective and precise FAI process is instrumental in identifying and mitigating quality risks, ensuring consistent and superior product quality.
Final Inspection
Before shipment, every part is subjected to an exhaustive inspection process that meticulously evaluates dimensions, appearance, functionality, and any specific customer requirements. This thorough examination ensures that only fully conforming parts reach our customers, upholding the highest standards of quality and satisfaction.
Packaging & Shipping
Company Profile
Since its inception in 2009 and with roots tracing back to 2002, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. has been at the forefront of high-precision component machining. For over two decades, we have relentlessly pursued excellence in the field, pioneering technical innovations and groundbreaking research that have set new standards in the industry. Our company has amassed a wealth of technical expertise and a sterling market reputation.
As a testament to our growth and capability, we proudly operate four state-of-the-art production bases strategically situated in the bustling hubs of Shenzhen and Guiyang. Supported by an expert team of over 400 dedicated professionals, Donghui has cultivated a robust and complete industry chain that seamlessly integrates research, development, production, and delivery. This holistic approach ensures that we not only meet but exceed the diverse needs of our esteemed clients, delivering unparalleled quality and efficiency.
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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