Product application
Donghui Precision Machinery is passionately committed to the artful manufacturing of sophisticated, high-end precision components, along with the innovative development and meticulous production of intelligent automation equipment. We proudly serve a variety of industries, including:
- Medical and Biotech: Delivering high-precision components and cutting-edge solutions specifically tailored for the advancement of medical devices.
- Semiconductors: Empowering the semiconductor industry by supporting chip manufacturing and related equipment with our core, precision-engineered components.
- New Energy: Playing a pivotal role in the sustainable and efficient development of new energy equipment through our innovative contributions.
- Automotive: Providing essential, precision components that fuel innovation within the automotive industry, particularly in the realms of intelligent and electric vehicle development.
Main Products
- Our non-standard, customized components are extensively applied across various sectors, including medical, automation, semiconductor, and automotive industries, embodying excellence and tailored precision.
Why choose us
Core Advantages
- A fleet of an impressive fleet comprising over 300 top-tier branded state-of-the-art machines, covering a wide range of equipment categories. This extensive array ensures we meet diverse machining needs across various industries with unmatched precision and efficiency.
- With an impressive 20 years of production experience, we've honed our craft to perfection, boasting rich technical and process advantages that set us apart in the competitive landscape.
cutting-edge production equipment
Advanced Inspection Equipment
Quality Ensurance
In-Coming Material Inspection
Before entering our warehouse, every piece of raw material is subjected to rigorous chemical composition analysis and meticulous physical property testing. Our suppliers are obligated to provide a Certificate of Origin for the materials, along with a Declaration of Conformity carrying their official seal, ensuring all materials meet our high standards.
In-Process Inspection
During machining, parts undergo continuous and thorough inspections to verify that dimensions and tolerances align perfectly with the stringent specifications. This vigilant, real-time quality assurance measure prevents the progression of defective components to subsequent production stages, effectively curtailing the risk of accumulating non-conforming product batches.
First Article Inspection
Our First Article Inspection (FAI) is a fundamental preventive strategy designed to detect potential issues before they escalate into extensive production of defective parts, thereby minimizing waste. With our precise and systematic FAI process, we significantly reduce quality risks and consistently uphold the highest standards of product excellence.
Final Inspection
Prior to shipment, each component undergoes an exhaustive inspection process that evaluates dimensions, appearance, and functionality, in addition to meeting any special customer requirements. This comprehensive final check ensures that only fully compliant parts make it to our customers, maintaining the integrity of our quality promise.
Packaging & Shipping
Company Profile
Donghui Precision Machinery Co., Ltd., a beacon of innovation and precision, was officially established in 2009, tracing its roots back to 2002. Over the past two decades, the company has dedicated itself to the meticulous art of high-precision basic component machining, coupled with cutting-edge technical research. We have amassed unparalleled technical expertise and a sterling market reputation, positioning ourselves as leaders in the field.
With four strategically located production bases in the bustling hubs of Shenzhen and Guiyang, and a dynamic workforce exceeding 400 dedicated employees, Donghui has cultivated a seamless and comprehensive industry chain that spans from innovative research and development to precise production and efficient delivery, all meticulously crafted to meet and exceed diverse customer demands.
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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