Product application
Donghui Precision Machinery is passionately committed to the artful crafting and precise engineering of high-end precision components that push the boundaries of accuracy and quality. We are at the forefront of developing and producing state-of-the-art intelligent automation equipment, expertly catering to a diverse array of industries, including:
- Medical and Biotech: Delivering meticulously engineered, high-precision components and pioneering solutions that elevate and enhance medical device performance.
- Semiconductors: Empowering the semiconductor industry by supporting chip manufacturing and providing essential core components for advanced equipment.
- New Energy: Playing a pivotal role in furthering the efficient and sustainable advancement of cutting-edge new energy equipment.
- Automotive: Supplying indispensable components that drive forward innovation and excellence in the automotive sector, including the realm of intelligent and electric vehicle advancements.
Main Products
- Our specialty lies in crafting non-standard customized components, which are extensively utilized across the medical, automation, semiconductor, and automotive industries.
Why choose us
Core Advantages
- A fleet of over 300 branded machines, covering a wide range of cutting-edge equipment categories. This extensive array is expertly designed to meet an impressive spectrum of machining needs across numerous industries, ensuring flexibility and precision at every step.
- For over 20 years, we have honed our production expertise, boasting a wealth of technical and process advantages that set us apart as industry leaders.
state-of-the-art production equipment
world-class Inspection Equipment
Quality Ensurance
In-coming Material Inspection
All raw materials are meticulously subjected to a rigorous chemical composition analysis and comprehensive physical property testing before being accepted into the warehouse. Suppliers must furnish a copy of the Certificate of Origin for the material, complemented by a Declaration of Conformity that bears their official seal. This stringent process ensures only the highest standard of materials enter our production line.
In-Process Inspection
During machining, parts undergo continuous, meticulous inspections to ensure every dimension and tolerance aligns precisely with our specifications. This proactive inspection strategy is pivotal in preventing any defective parts from advancing to subsequent stages, thus averting the production of large batches of non-conforming products (NG) and maintaining our commitment to impeccable quality.
First Article Inspection
The First Article Inspection (FAI) serves as a proactive strategy, meticulously designed to detect and address potential issues before the production of a large volume of defective parts, thereby eliminating unnecessary waste. Our precise and effective FAI process is instrumental in identifying quality risks, ensuring that we maintain a consistent product quality that meets the highest standards.
Final Inspection
Before shipment, each part undergoes a comprehensive inspection process, meticulously examining dimensions, appearance, functionality, and any unique customer specifications. This thorough examination ensures that only parts meeting our exacting standards are sent to customers, thereby upholding our reputation for excellence and ensuring complete customer satisfaction.
Packaging & Shipping
Company Profile
Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd., originally founded in 2002 and officially established in 2009, is a beacon of excellence in high-precision basic component machining. With over two decades of dedicated technical research, we have become a cornerstone in the field, setting the bar for quality and precision. We have garnered an impressive array of technical expertise and a stellar market reputation, making us a trusted name in the industry.
With four state-of-the-art production bases strategically located in Shenzhen and Guiyang, supported by a dynamic team of over 400 highly skilled employees, Donghui has meticulously crafted a comprehensive industry chain. From innovative research and development to precise production and timely delivery, we are dedicated to meeting the diverse needs of our valued clients with unmatched efficiency and uncompromising 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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