Product application
Donghui Precision Machinery is passionately committed to the art of manufacturing elite, high-end precision components and pioneers the development and production of cutting-edge intelligent automation equipment, catering to diverse industries, including:
- Medical and Biotech: Delivering exquisitely crafted, high-precision components and groundbreaking solutions that elevate the performance of medical devices.
- Semiconductors: Empowering chip manufacturing and its associated equipment through our indispensable core components, designed to perfection.
- New Energy: Playing a pivotal role in the advancement of efficient and eco-friendly new energy equipment, fostering a sustainable future.
- Automotive: Supplying essential components that fuel innovation and progress in the automotive industry, with a focus on intelligent and electric vehicle development.
Main Products
- Innovatively designed, non-standard customized components, extensively serving the medical, automation, semiconductor, and automotive industries with superior quality and precision.
Why choose us
Core Advantages
- A fleet of over 300 branded machines, showcasing a comprehensive array of equipment categories that adeptly cater to diverse machining demands across a multitude of industries.
- Leveraging 20 years of seasoned production experience, we offer unparalleled technical and process expertise.
State-of-the-art production equipment
Cutting-edge Inspection Equipment
Quality Ensurance
Incoming Material Inspection
Prior to acceptance into our warehouse, all raw materials must pass rigorous chemical composition analysis and physical property testing. To uphold the highest standards of quality, suppliers are mandated to provide an official Certificate of Origin for the materials, accompanied by a Declaration of Conformity bearing their official seal.
In-Process Inspection
During the machining process, parts are meticulously inspected to ensure that dimensions and tolerances strictly adhere to specified standards. This vigilant approach mitigates the risk of defective parts advancing to subsequent stages, thereby preventing the production of large batches of non-conforming products (NG).
First Article Inspection
First Article Inspection (FAI) is a strategic and proactive measure implemented to identify potential issues before large-scale production commences. This critical process safeguards against the creation of unnecessary scrap and supports consistent product quality by preemptively addressing any risks.
Final Inspection
Before any shipment is dispatched, each part is subject to a comprehensive inspection that evaluates dimensions, appearance, functionality, and any unique customer requirements. This rigorous final check ensures that only conforming parts are delivered to our valued clients, maintaining our commitment to excellence.
Packaging & Shipping
Company Profile
Donghui Precision Machinery Co., Ltd., established in 2009 (with its roots dating back to 2002), has been a beacon of excellence in high-precision basic component machining and technical research for over two decades. The company has consistently pushed the boundaries of innovation and precision engineering. Our company has amassed a vast reservoir of technical expertise and earned a sterling market reputation for its unwavering commitment to quality and precision.
Boasting four state-of-the-art production bases strategically situated in Shenzhen and Guiyang, and supported by a dedicated team of over 400 skilled employees, Donghui has meticulously crafted a comprehensive industry chain that spans from research and development to production and delivery, ensuring efficiency and precision to meet the diverse needs of our esteemed 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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