Product application
Donghui Precision Machinery is passionately committed to the meticulous manufacturing of the highest caliber precision components, and spearheading the development and production of cutting-edge intelligent automation equipment. We are proud to serve a broad spectrum of industries, including:
- Medical and Biotech: Crafting high-precision components and pioneering solutions that elevate the performance of medical devices.
- Semiconductors: Empowering chip manufacturing and its ancillary equipment with our indispensable core components.
- New Energy: Driving the efficient and sustainable advancement of new energy equipment to new heights.
- Automotive: Delivering vital components that fuel innovation in the automotive sector, from intelligent to electrifying vehicle development.
Main Products
- We specialize in non-standard customized components that are integral to the medical, automation, semiconductor, and automotive industries, enhancing technology and efficiency across the board.
Why choose us
Core Advantages
- Empowered by a remarkable fleet of over 300 renowned and branded state-of-the-art machines, our expansive collection spans a diverse array of equipment categories, masterfully tailored to address an extensive variety of machining needs across multiple industries.
- With a robust legacy spanning 20 years in production, we possess unparalleled technical and process expertise, offering rich advantages in precision and quality.
Cutting-Edge Production Equipment
Advanced Inspection Equipment
Quality Ensurance
Incoming Material Inspection
All raw materials are meticulously scrutinized through comprehensive chemical composition analysis and physical property testing prior to their acceptance into our warehouse. Our suppliers are obligated to furnish a Certificate of Origin alongside a Declaration of Conformity, both duly verified with their official seal, ensuring the utmost authenticity and compliance.
In-Process Inspection
Throughout the machining process, our parts undergo relentless inspection to guarantee that dimensions and tolerances precisely adhere to the specified requirements. This vigilant approach is pivotal in intercepting any faulty components before they advance to subsequent stages, thereby preemptively eliminating the risk of large batches of non-conforming products (NG).
First Article Inspection (FAI)
Our First Article Inspection (FAI) is a robust, proactive strategy meticulously crafted to unearth potential issues and challenges before they escalate into the production of large volumes of defective parts. By diligently implementing a precise and effective FAI process, we are able to significantly reduce quality risks, thereby ensuring the steadfast consistency of our product quality and minimizing unnecessary waste.
Final Inspection
Prior to shipment, each meticulously crafted part is subjected to an exhaustive inspection that encompasses dimensions, appearance, functionality, and any bespoke customer requirements. This rigorous final check is imperative to certify that every part dispatched meets our highest standards of excellence, ensuring no non-conforming parts reach our esteemed customers.
Packaging & Shipping
Company Profile
Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. was established in 2009, building upon foundations laid in 2002. For over two decades, this innovation-driven company has been dedicated to mastering the intricacies of high-precision basic component machining and pioneering related technical research. We have harnessed a wealth of technical expertise and cultivated a stellar market reputation.
With four strategically positioned production bases spanning the dynamic regions of Shenzhen and Guiyang, supported by a robust team of over 400 dedicated employees, Donghui has meticulously engineered a comprehensive industry chain, seamlessly integrating research, development, production, and delivery. This ensures the highest efficiency and quality, adeptly catering to the diverse and evolving 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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