Product application
Donghui Precision Machinery is dedicated to the expert manufacturing of high-end precision components, and excels in the development and production of cutting-edge intelligent automation equipment, serving a diverse range of industries including:
- Medical and Biotech: Providing high-precision components and innovative solutions that are critical to the advancement and functionality of medical devices.
- Semiconductors: Enhancing chip manufacturing capabilities by supplying essential core components, supporting the broader semiconductor ecosystem.
- New Energy: Playing a vital role in the efficient and sustainable advancement of new energy equipment, driving the future of energy solutions.
- Automotive: Delivering critical components that propel innovation and progress in the automotive industry, with a focus on intelligent and electric vehicle development.
Main Products
- Non-standard customized components, tailored to meet the specific needs of industries such as medical, automation, semiconductor, and automotive sectors.
Why choose us
Core Advantages
- A fleet of cutting-edge machinery: Embrace unparalleled efficiency and precision boasting over 300 high-performance units: A testament to our capability and scale featuring top-tier branded solutions: Elevating the standard of excellence machines engineered for perfection: Delivering precision with every movementacross a wide spectrum of equipment categories, our machines are designed to tackle diverse machining challenges, ensuring that industry-specific needs are met with unmatched expertise.
- With a legacy spanning 20 years, our extensive production experience translates into profound technical and process advantages, empowering us to push the boundaries of innovation.
State-of-the-art production equipment: Precision-engineered for optimal performance.
Advanced Inspection Equipment: Guaranteeing quality through meticulous verification.
Quality Ensurance
Meticulous In-coming Material Inspection
Before any raw materials make their way into our warehouse, they undergo a rigorous chemical composition analysis and physical property testing. This ensures only the finest materials are selected. Suppliers must provide a validated Certificate of Origin and a Declaration of Conformity, complete with an official seal, guaranteeing authenticity and quality.
Precision In-Process Inspection
During machining, each part is subjected to continuous inspection to meticulously verify that dimensions and tolerances adhere strictly to specifications. This proactive vigilance ensures defects are caught early, preventing them from advancing to subsequent production stages and eliminating the risk of large-scale batches of non-conforming products (NG).
Detailed First Article Inspection
The First Article Inspection (FAI) acts as a crucial preventative measure, pinpointing potential concerns before they escalate into significant production issues. Our robust and precise FAI process is integral in minimizing quality risks, thereby ensuring a consistently high standard of product quality and significantly reducing waste.
Comprehensive Final Inspection
Prior to shipment, each part is subjected to an exhaustive inspection protocol. This encompasses a detailed assessment of dimensions, visual appearance, functionality, and any special customer-specific requirements. This rigorous examination guarantees that only compliant, high-quality parts reach our customers, upholding our commitment to excellence.
Packaging & Shipping
Company Profile
Founded initially in 2002 and formally established in 2009, Shenzhen Donghui Precision Mechanical & Electrical Co., Ltd. has dedicated itself to the art and science of high-precision component machining. Over the past two decades, we have not only focused on manufacturing excellence but have also been at the forefront of technical research, cementing our position as pioneers in this field. Our company prides itself on having amassed a wealth of technical knowledge and a sterling market reputation. This expertise allows us to deliver unparalleled precision solutions to our clients.
Equipped with four strategically located production bases in the prosperous cities of Shenzhen and Guiyang, supported by a dedicated team of over 400 talented employees, Donghui fosters a robust and complete industry chain. From the initial stages of research and development through to the final phases of production and delivery, we meet the diverse needs of our customers with efficiency and exceptional 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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