Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., we are committed to excellence in manufacturing, producing high-end precision components with unmatched quality and accuracy, and pioneering the development and production of cutting-edge intelligent automation equipment. Our expertise serves a diverse range of industries, including:
- Medical and Biotech: Delivering high-precision components and groundbreaking solutions tailored for advanced medical devices, ensuring reliability and innovation.
- Semiconductors: Empowering the semiconductor industry by supporting chip manufacturing and related equipment with essential core components, enhancing efficiency and performance.
- New Energy: Playing a pivotal role in the efficient and sustainable advancement of new energy equipment, contributing to a greener future.
- Automotive: Supplying key components that are vital for driving innovation in the automotive sector, including the development of intelligent and electric vehicles.
Main Products
- We specialize in crafting non-standard customized components that are indispensable across the medical, automation, semiconductor, and automotive industries, delivering precision and quality that meets the highest standards.
Why choose us
Core Advantages
- A robust fleet of state-of-the-art technology boasting over 300 premier branded machines, covering a comprehensive spectrum of equipment categories, fully equipped to fulfill diverse machining demands across a multitude of industries.
- With 20 years of esteemed production experience, we hold rich technical prowess and innovative process advantages, ensuring excellence at every step.
Cutting-edge production equipment
Precision Inspection Equipment
Quality Ensurance
Rigorous In-Coming Material Inspection: Setting the Standard
Before entering our warehouse, all raw materials are subject to a meticulous chemical composition analysis and rigorous physical property testing. To ensure the utmost authenticity and compliance, our suppliers are mandated to provide a complete Certificate of Origin for the materials, coupled with a Declaration of Conformity that bears their official seal.
Precision-Driven In-Process Inspection
Throughout the machining process, parts are subjected to continuous, precision-focused inspections to guarantee that all sizes and tolerances strictly adhere to detailed specifications. This proactive strategy is instrumental in halting defective parts from progressing to subsequent stages, thereby safeguarding against the production of large batches of non-conforming products (NG).
First Article Inspection (FAI): Your Quality Assurance Vanguard
The First Article Inspection (FAI) is a forward-thinking measure designed to preemptively identify potential issues and avert the production of large volumes of defective parts, thereby minimizing unnecessary waste. Our state-of-the-art and precise FAI process is vital in reducing quality risks and is a cornerstone in delivering consistently superior product quality.
Comprehensive Final Inspection: Ensuring Excellence in Every Shipment
Before any shipment, each part must pass a comprehensive inspection that meticulously examines dimensions, appearance, functionality, and any specific customer requirements. This thorough process guarantees that every single part meets the highest standards and ensures that no non-conforming parts reach our valued customers.
Packaging & Shipping
Company Profile
Donghui Precision Machinery Co., Ltd., a name synonymous with innovation and excellence, was officially established in 2009, though its roots trace back to 2002. For over two decades, we have been at the forefront of high-precision basic component machining, pushing the boundaries of technological research and advancement. We have amassed a wealth of technical expertise and have built a sterling market reputation.
With four state-of-the-art production bases strategically located in the dynamic cities of Shenzhen and Guiyang, coupled with a dedicated team of over 400 highly-skilled employees, Donghui has meticulously crafted a comprehensive industry chain. From pioneering research and development to the seamless completion of production and delivery, we are committed to exceeding diverse customer expectations with unmatched efficiency and superior 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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