Product application
Donghui Precision Machinery is passionately committed to the art of manufacturing, crafting high-end precision components that redefine excellence, and spearheading the development and production of cutting-edge intelligent automation equipment, serving a diverse array of industries, including:
- Medical and Biotech: Delivering high-precision components and groundbreaking solutions tailored for the advancement of medical devices, ensuring exceptional quality and performance.
- Semiconductors: Empowering the semiconductor industry by supporting chip manufacturing and related equipment with our indispensable core components, elevating technological innovation.
- New Energy: Pioneering the path towards efficient and sustainable new energy equipment development, contributing to a greener future with precision excellence.
- Automotive: Supplying critical components that fuel innovation in the automotive industry, with a special focus on intelligent and electric vehicle development, driving the future of mobility.
Main Products
- Our repertoire includes non-standard customized components, expertly serving the medical, automation, semiconductor, and automotive sectors with unmatched precision and versatility.
Why choose us
Core Advantages
- A fleet of over 300 renowned branded state-of-the-art machines, encompassing a diverse array of equipment categories meticulously designed to cater to a plethora of machining needs across an extensive range of industries.
- Backed by two decades of unparalleled production experience, we boast an exceptional array of technical and process advantages that set us apart in the field.
cutting-edge production equipment
Advanced Inspection Equipment
Quality Ensurance
In-coming Material Inspection
Before any raw materials warmly find their place in our warehouse, they must pass rigorous chemical composition analysis and physical property testing. Not only that, but our suppliers are committed to excellence by providing a Certificate of Origin for each material, paired with a Declaration of Conformity dressed with their official seal, ensuring top-tier quality from the start.
In-Process Inspection
Throughout the machining journey, parts are meticulously inspected to guarantee that every size and tolerance meets the highest specifications. This vigilant, proactive approach is our armor against defective parts progressing to the next stage, effectively safeguarding against large batches of non-conforming products, and maintaining impeccable quality standards.
First Article Inspection
The First Article Inspection (FAI) is our strategic, proactive initiative aimed at identifying potential issues before they escalate into large-scale problems, thereby preventing unnecessary waste. This robust and precise FAI process is our cornerstone for minimizing quality risks and securing consistent, top-notch product quality.
Final Inspection
Prior to shipment, each part undergoes a comprehensive inspection that scrutinizes dimensions, appearance, functionality, and any bespoke customer requirements. This diligent process ensures that only flawless, conforming parts reach the customer, upholding our promise of excellence and precision.
Packaging & Shipping
Company Profile
Since its inception in 2009 and with roots tracing back to 2002, Donghui Precision Machinery Co., Ltd. has been at the forefront of high-precision component machining. For over 20 years, we have diligently focused on pioneering advancements and technical research, establishing ourselves as industry leaders. We have amassed a wealth of technical knowledge and a stellar market reputation.
Boasting four state-of-the-art production bases strategically located in the innovation hubs of Shenzhen and Guiyang, supported by a dedicated team of over 400 highly skilled employees, Donghui has crafted a seamless, end-to-end industry chain. From groundbreaking research and meticulous development to precision production and timely delivery, we excel in catering to the diverse needs of our esteemed clientele with the highest quality standards.
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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