The Industrial Revolution changed people’s production methods. From the manual industry to mechanized manufacturing, CNC processing technology has been widely used since the introduction of CNC machine tools in the 1960s.CNC processing technology eliminates the mistakes of artificial operation through pre-programming, which greatly improves production efficiency and product quality, and is welcomed by various industries.
What is CNC machining?
CNC machine tools are automated machinery with computer technology at the core. It controls machine tool motion and process parameters through computer instructions to achieve precise processing of workpieces. Compared with traditional machine tools, CNC machine tools have many advantages in processing efficiency, processing accuracy, and processing quality. Common CNC machining has types of turning, milling, grinding, drilling, and other types.
What is turning?
The workpiece is rotated, and the car knife is cut into a straight line or curve movement in the plane. Driven is generally carried out on the lathe, which is used to process the inner and outer cylindrical, end surface, cone surface, forming surface, and thread of the workpiece.
Advantages of turning:
- High-precision: The drive can achieve very strict tolerance and excellent surface smoothness, so it is suitable for the production of precision components.
- High production efficiency of cylindrical parts: The efficiency of cylindrical parts such as shafts, poles, and bolts is high.
- Multifunctional: It can handle various materials, including metal, plastic, and composite materials.
What is milling?
Milling refers to the use of rotating multi-blade cutting workpieces, which is a high-efficiency processing method. The knife is rotated (as the main movement) at work, the workpiece moves (as the movement of the motion), and the workpiece can be fixed, but at this time, the rotating knife must also move.
Advantages of milling:
- Complex geometric shapes: It can produce a variety of complex shapes, including grooves, holes,and complex outlines.
- Multi-axis processing: Modern CNC milling machines can be moved along the multi-axis, three-dimensional processing, and fine parts can be made.
- Flexibility: It is suitable for both small and large-scale production, but also for prototype production.
What is grinding?
Grinding refers to the processing of the surface of the workpiece with a high line speed, and the grinding and addition of the surface of the outer circle. The work is mainly processed on the outer grinding bed with a grinding wheel.
Advantages of grinding:
1: High precision and fine surface roughness: In the grinding process, the abrasive particles on the grinding wheel can be fine-processed to the workpiece, so as to achieve higher dimensional accuracy and surface quality.
2: It can process hard materials and soft materials: grinding processing not only processes copper, aluminum, and other non-iron metals but also can process other tools difficult to cut high hardness, ultra-hard materials, such as hardened steel, cemented carbide, and various gems.
What is drilling?
Drilling is the cutting method that uses drilling tools to process holes in solid materials.
Advantages of drilling:
1: Simple operation: The process of drilling processing is relatively simple. It does not require complicated equipment or high-precision operations so it can be performed quickly and effectively on various occasions.
2: Strong adaptability: Drilling processing is suitable for a variety of materials, including metal, wood, etc., which can meet the processing needs of different materials.
The processing range of turning, milling, grinding, and drilling:
Turning is mainly suitable for processing all kinds of inner and outer rotating surfaces, such as inner and outer cylinders, inner and outer cones, grooves, thread, rotating forming surfaces, etc. Turning to process is not only applicable to metal materials, but also non-metal, plastic, and other materials. Turning machining can complete a variety of surface machining with one clamping, and its machining accuracy can reach the accuracy level of IT7 ~ IT5 .
Milling is suitable for processing planes, grooves, various forming planes (such as bonds, gears, and threads), and the special shape of the mold. Milling processing can obtain high processing accuracy and surface quality and generally can reach the accuracy level of IT8 ~ IT7.
Grinding is mainly used for fine processing on the surface of the workpiece to obtain high-precision and high-surface quality processing effect. The grinding processing can be used in various forms such as outer grinding, internal round grinding, unintentional grinding, and thread grinding. It can achieve very high accuracy levels, and can even reach the accuracy level of IT6 ~ IT4.
Drilling is mainly used for processing holes on the workpiece, including the operation of the center hole, drilling, and rectifying of drilling. Drill processing is suitable for various materials, including metal and non-metal materials.
Conclusion
Turning is very effective for high-precision and high-efficiency circular parts, but it is limited to the shape of symmetrical rotating parts. The cost of installation is usually low, but it will generate a lot of material waste. Milling is good at processing complex geometric shapes and details, providing great flexibility and ability for 3D processing. However, milling processing requires more complicated and more expensive settings, and it may be difficult to achieve the same fine surface smoothness as well as driving processing in some cases. Drill cutting speed is slow, and suitable for processing various holes. Grinding is suitable for materials with high hardness.
DMTC has 30 precision instruments. Whether it is turning, milling, drilling, or grinding, Our experienced technicians can make precision parts required for customers according to the material of the parts, the geometric shape, size, and tolerance. Our technology is first-rate. From production and processing to every link of shipments, all products have undergone strict testing and quality control. Quality is the first productive force of DMTC, and we can also customize various precision parts for customers. Our products have been exported overseas for decades and have been recognized by customers. If you need the best processing service, start with DMTC!
