Product application
Donghui Precision Machinery is dedicated to the exceptional craftsmanship and manufacturing of high-end precision components that are essential for cutting-edge advancements, and the development and production of intelligent automation equipment, serving critical industries including:
- Medical and Biotech: Providing high-precision components and innovative solutions for medical devices.
- Semiconductors: Supporting chip manufacturing and related equipment with core components.
- New Energy: Contributing to the efficient and sustainable development of new energy equipment.
- Automotive: Providing critical components to drive innovation in the automotive industry, including intelligent and electric vehicle development.
Main Products
- Non-standard customized components, expertly serving the diverse needs of the medical, automation, semiconductor, and automotive industries with precision and reliability.
Why choose us
Core Advantages
- A Fleet of Over 300 Branded Machines, representing a vast spectrum of advanced equipment categories, our fleet is meticulously designed to cater to an impressive array of machining needs across multiple industries with unmatched precision and efficiency.
- With a remarkable 20-year legacy in production experience, we boast unparalleled technical and process expertise, ensuring our solutions are second to none in the industry.
Production Equipment
Inspection Equipment
Quality Ensurance
Meticulous In-coming Material Inspection
Before any raw materials are accepted into our warehouse, they are subject to rigorous chemical composition analysis and comprehensive physical property testing. Suppliers must provide a certified Certificate of Origin, coupled with a Declaration of Conformity, stamped with their formal seal, to guarantee material integrity.
Vigilant In-Process Inspection
Throughout the machining process, parts are meticulously inspected to ensure precise adherence to size and tolerance specifications. This diligent and proactive approach is instrumental in intercepting defective parts early, safeguarding against the progression of non-conforming products (NG) in large batches.
Comprehensive First Article Inspection
Our First Article Inspection (FAI) is a strategic measure aimed at preemptively identifying potential issues, thereby averting the production of large volumes of defective parts and minimizing waste. Our robust and precise FAI process is essential in reducing quality risks and maintaining a high standard of product consistency.
Meticulous Final Inspection
Prior to shipment, each component undergoes an exhaustive inspection process that includes dimensions, appearance, functionality, and any specific customer requirements. This thorough scrutiny ensures that only conforming parts reach our valued customers.
Packaging & Shipping
Company Profile
Donghui Precision Machinery Co., Ltd. was established in 2009 (founded in 2002), and has dedicated itself over the past two decades to mastering the art and science of high-precision basic component machining. Our unwavering commitment to excellence is reflected in our deep-seated focus on advancing technical research, truly setting us apart in the industry. We have garnered an impressive wealth of technical expertise, alongside building a sterling market reputation that speaks volumes of our quality and reliability.
With a strategic presence through four state-of-the-art production bases situated in the bustling hubs of Shenzhen and Guiyang, our operations are powered by a dedicated team of over 400 highly skilled employees. Donghui has meticulously crafted a comprehensive industry chain that spans from groundbreaking research and development to production and timely delivery, all designed to meet and exceed the diverse needs of our valued clientele, with efficiency and top-notch quality assurance.
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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