Product application
At Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., we pride ourselves on spearheading excellence in manufacturing. Our expertise lies in creating high-end precision components that meet the most stringent standards. We champion the development and production of cutting-edge intelligent automation equipment, serving a diverse range of industries, including:
- Medical and Biotech: We deliver unparalleled high-precision components and innovative solutions that empower the medical devices sector.
- Semiconductors: Our pivotal core components bolster chip manufacturing and the advancement of related equipment.
- New Energy: We drive the future forward by enhancing the efficiency and sustainability of new energy equipment.
- Automotive: With our critical components, we fuel innovation in the automotive industry, paving the way for intelligent and electric vehicle advancements.
Main Products
- Our repertoire includes non-standard customized components that extensively serve the medical, automation, semiconductor, and automotive sectors with exceptional precision.
Why choose us
Core Advantages
- A fleet of state-of-the-art equipment boasting over 300 units from well-known brands high-performance machines, encompassing a diverse array of equipment categories. This extensive selection ensures we can expertly cater to a variety of machining needs across multiple industries, providing unmatched versatility.
- With an impressive 20 years of production experience, we possess rich technical expertise and process advantages that set us apart in the industry.
cutting-edge production equipment
Precision Inspection Equipment
Quality Ensurance
In-coming Material Inspection
All our raw materials are meticulously subjected to rigorous chemical composition analysis and thorough physical property testing before they earn a place in our warehouse. Our suppliers are mandated to furnish an authentic Certificate of Origin for each material, accompanied by a Declaration of Conformity bearing their prestigious official seal.
In-Process Inspection
During machining, parts undergo continuous and stringent inspection to ensure dimensions and tolerances are perfectly aligned with specified standards. This vigilant approach is instrumental in preemptively halting the progression of defective parts to subsequent stages, thereby safeguarding against large batches of non-conforming products (NG).
First Article Inspection
First Article Inspection (FAI) is an anticipatory strategy crafted to discern potential challenges and discrepancies before mass production of defective parts occurs, thus averting unnecessary waste. Our precisely implemented FAI process is pivotal in diminishing quality risks and assuring unwavering product excellence.
Final Inspection
Before shipment, each part undergoes an exhaustive inspection process, evaluating dimensions, appearance, functionality, and any specific customer requirements. This rigorous examination guarantees that no non-conforming parts leave our facilities and reach the customer's hands.
Packaging & Shipping
Company Profile
Donghui Precision Machinery Co., Ltd. was established in 2009, with roots tracing back to its founding in 2002. For over two decades, we have dedicated ourselves to the art and science of high-precision basic component machining, paired with cutting-edge technical research. Our commitment to excellence defines our legacy. We have amassed a wealth of technical knowledge and built a prestigious market reputation, setting us apart in the field.
With four strategically located production bases in the dynamic cities of Shenzhen and Guiyang, and a highly skilled team comprising over 400 dedicated employees, Donghui proudly offers a seamless industry chain. From innovative research and development to precise production and timely delivery, we ensure our solutions meet and exceed diverse customer expectations with impeccable efficiency and quality.
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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