Product application
Donghui Precision Machinery is passionately committed to the artful crafting of elite precision components, fostering both the advancement and the production of cutting-edge intelligent automation equipment, proudly serving a myriad of dynamic industries, including:
- Medical and Biotech: Delivering exquisitely high-precision components and pioneering solutions tailored for the intricacies of medical devices.
- Semiconductors: Empowering chip manufacturing and associated equipment with indispensable core components.
- New Energy: Spearheading the movement towards efficient and eco-friendly development of novel energy equipment.
- Automotive: Supplying essential components that catalyze innovation within the automotive industry, with a special focus on intelligent and electric vehicle evolution.
Main Products
- Tailored non-standard components, serving with distinction across the medical, automation, semiconductor, and automotive sectors.
Why choose us
Core Advantages
- A fleet of top-tier machinery: We proudly boast over 300 state-of-the-art branded machines, each meticulously selected to ensure excellence.These cover a diverse array of equipment categories, adeptly poised to fulfill an extensive range of machining requirements across multiple industries.
- With 20 years of production prowess, benefit from our profound technical and process advantages that have been finely honed over decades.
Production Equipment: Cutting-edge technology aligned with precision for flawless output.
Inspection Equipment: Rigorous quality checks with our advanced inspection tools to guarantee superior standards.
Quality Ensurance
Meticulous In-Coming Material Inspection
Before being welcomed into our inventory, all raw materials are subjected to rigorous chemical composition analysis and physical property testing. To ensure authenticity and adherence to standards, suppliers are mandated to provide an official Certificate of Origin for the materials, accompanied by a Declaration of Conformity, duly sealed with their official mark.
Diligent In-Process Inspection
Throughout the machining process, parts are meticulously inspected to confirm that dimensions and tolerances are strictly aligned with specified standards. This vigilant approach serves to intercept any defects early on, preventing flawed parts from advancing to subsequent stages and effectively reducing the risk of large-scale production of non-conforming products (NG).
Meticulous First Article Inspection (FAI)
Our First Article Inspection (FAI) acts as a preventative strategy, identifying potential issues before large volumes of defective parts can be produced. It is a crucial element in our quality control system, significantly reducing unnecessary waste. Our precise and effective FAI process ensures reliability and consistency in product quality, safeguarding against potential quality risks.
Comprehensive Final Inspection
Before dispatch, each part must pass a comprehensive inspection that evaluates dimensions, appearance, functionality, and any unique requirements from our valued customers. This thorough examination ensures that only parts that meet our high standards of conformance are delivered, guaranteeing customer satisfaction with every shipment.
Packaging & Shipping
Company Profile
Since its inception in 2009 (founded in 2002), Donghui Precision Machinery Co., Ltd. has been at the forefront of innovation, dedicating itself to the art of high-precision basic component machining. With two decades of relentless pursuit of excellence, the company has advanced the boundaries of technical research, setting industry standards in precision and quality. We take pride in our extensive technical expertise and the sterling market reputation we have built over the years.
With an impressive four production bases strategically located in the thriving cities of Shenzhen and Guiyang, and boasting a skilled workforce of over 400 dedicated employees, Donghui has masterfully crafted a comprehensive industry chain. This spans from innovative research and development to meticulous production and timely delivery, ensuring we meet and exceed the diverse needs of our valued customers with unmatched efficiency and superior 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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