Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., we are passionately committed to crafting high-end precision components while also pioneering the development and production of state-of-the-art intelligent automation equipment. Our solutions cater to a diverse range of cutting-edge industries, including:
- Medical and Biotech: Delivering exceptional high-precision components and breakthrough innovations for the medical device sphere, ensuring accuracy and reliability.
- Semiconductors: Enhancing the chip manufacturing process and its ancillary equipment through our superior core components.
- New Energy: Playing a pivotal role in fostering the efficiency and sustainability of new energy equipment, driving a cleaner, greener future.
- Automotive: Empowering the automotive industry with vital components that are at the forefront of innovation, especially in the realms of intelligent and electric vehicles.
Main Products
- Our portfolio shines with non-standard customized components widely revered in the medical, automation, semiconductor, and automotive sectors, perfectly tailored to meet the dynamic demands of modern industry.
Why choose us
Core Advantages
- Our State-of-the-Art Machinery With an impressive arsenal of over 300 renowned branded high-performance machines, we offer a versatile array of equipment categories. This robust lineup empowers us to fulfill diverse machining needs across multiple industries, ensuring precision and efficiency.
- Backed by two decades of unparalleled production experience, we boast extensive technical prowess and process excellence that sets us apart.
Cutting-edge Production Equipment
Advanced Inspection Equipment
Quality Ensurance
Incoming Material Inspection
Before any raw materials are accepted into our warehouse, they must pass a rigorous chemical composition analysis and physical property testing. Our commitment to excellence begins with our suppliers, who are obligated to provide a Certificate of Origin for each material, along with a Declaration of Conformity, complete with their official seal.
In-Process Inspection
Throughout the machining process, parts undergo continuous inspection to ensure that every dimension and tolerance strictly adheres to specified requirements. This diligent monitoring is essential in preventing the progression of defective parts to subsequent stages, thereby significantly reducing the risk of large batches of non-conforming goods (NG).
First Article Inspection
Our First Article Inspection (FAI) is a strategic, proactive measure designed to preemptively identify and address any potential issues before they escalate into larger-scale production challenges. Through an effective and precise FAI process, we minimize quality risks and ensure the unwavering consistency of our product quality.
Final Inspection
Prior to shipment, every part is subjected to a comprehensive inspection process, which meticulously evaluates dimensions, appearance, functionality, and any specific customer requirements. This thorough vetting ensures that only parts meeting the highest standards of conformity reach our valued customers.
Packaging & Shipping
Company Profile
Since its establishment in 2009, which traces its roots back to 2002, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. has been a trailblazer in the realm of high-precision basic component machining. For over two decades, we have been at the forefront of technical research and innovation, setting benchmarks in the industry. We pride ourselves on our vast reservoir of technical prowess and the sterling market reputation we have cultivated over the years.
With four strategically located production bases in the vibrant cities of Shenzhen and Guiyang, coupled with a dedicated workforce of over 400 employees, Donghui stands as a paragon of efficiency and quality. We have meticulously developed a comprehensive industry chain that seamlessly integrates research, development, production, and delivery, catering to the diverse and exacting needs of our valued clientele.
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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