Product application
Donghui Precision Machinery is passionately committed to the meticulous crafting and innovation of high-end precision components, pioneering the development and production of cutting-edge intelligent automation equipment, seamlessly catering to a diverse range of industries, including:
- Medical and Biotech,offering unparalleled high-precision components and groundbreaking solutions for advanced medical devices.
- Semiconductors,where we support state-of-the-art chip manufacturing and its accompanying equipment with our core, precision-engineered components.
- New Energy,dedicated to enhancing efficiency and sustainability in the development of next-generation new energy equipment.
- Automotive,where we contribute vital components that fuel innovation in the automotive sector, driving forward the evolution of intelligent and electric vehicles.
Main Products
- Our expertise in non-standard customized components allows us to expertly serve the medical, automation, semiconductor, and automotive industries with precision and excellence.
Why choose us
Core Advantages
- A fleet of Top-of-the-Line Machines over 300 Advanced and State-of-the-Art internationally recognized branded precision machines, meticulously selected to span an extensive range of equipment categories, designed with the versatility to meet diverse machining needs across multiple industries.
- With an impressive legacy of 20 years in production, we boast rich technical expertise and process advantages that set us apart.
Cutting-Edge Production Equipment
Sophisticated Inspection Equipment
Quality Ensurance
Thorough In-Coming Material Inspection
Before integration into our operations, all raw materials are meticulously subjected to rigorous chemical composition analysis and stringent physical property testing. Suppliers are obligated to furnish a Certificate of Origin for the material, accompanied by a Declaration of Conformity, stamped with their official seal to ensure authenticity and compliance.
Comprehensive In-Process Inspection
During machining, each part is meticulously inspected to confirm that dimensions and tolerances are precisely aligned with specifications. This diligent, proactive approach effectively prevents the advancement of defective items, safeguarding subsequent stages from large batches of non-conforming products (NG).
Meticulous First Article Inspection
The First Article Inspection (FAI) is a strategic, proactive initiative aimed at detecting potential issues before they escalate into significant production problems. This effective verification process plays an indispensable role in minimizing quality risks and fortifying consistent product excellence, thus preventing superfluous material waste.
Rigorous Final Inspection
Prior to dispatch, each component is subjected to an exhaustive inspection process that includes dimension verification, aesthetic evaluation, functionality check, and the fulfillment of any specific customer requirements. This comprehensive scrutiny ensures that only conforming parts reach our valued customers.
Packaging & Shipping
Company Profile
Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., a beacon of engineering excellence, was established in 2009, with roots tracing back to 2002. Over the past two decades, we have carved a niche in the realm of high-precision basic component machining, powering forward with relentless innovation and comprehensive technical research. Our team has amassed an impressive reservoir of technical expertise, coupled with a sterling market reputation, standing as a testament to our unwavering commitment to quality and precision.
Strategically equipped with four state-of-the-art production bases in the bustling cities of Shenzhen and Guiyang, and supported by a robust workforce exceeding 400 dedicated professionals, Donghui seamlessly integrates an entire industry chain that spans from pioneering research and development to meticulous production and prompt delivery, adeptly satisfying the diverse needs of our esteemed clientele with 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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