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CNC Machining Method For Precision Parts


Precision CNC machining is a kind of automatic processing, the most common way is through the computer image to direct the machine machining parts. In this way, the machine can automatically perform cnc cutting, cnc drilling, cnc milling and other operations to achieve accurate size and shape. Moreover, CNC also works well with materials with very similar chemical and physical properties, such as stainless steel.

What is CNC machining of precision parts?

When precision parts machining accuracy to nano, and finally to atomic unit as the purpose, ultra-precision parts machining methods can not adapt, it is necessary to use special precision parts machining methods, namely the application of chemical energy, electrochemical energy, heat energy or electric energy. These energies transcend the interatomic binding energy, so as to remove the local interatomic adhesion, bonding or lattice deformation on the workpiece surface, so as to achieve the purpose of ultra-precision machining. These processes include mechanical and chemical polishing, ion sputtering and ion implantation, electron beam irradiation, laser beam processing, metal evaporation and molecular beam epitaxy.

CNC machining method for precision parts

So what are the cnc machining methods for precision parts? The following are some key factors to consider in the CNC machining of precision parts shared by Longsheng Technology:

CNC Machining Method For Precision Parts

Design and modeling

Before CNC machining, the parts need to be designed and modeled. This requires that the machiner must be proficient in CAD and CAM tools. Although this topic may take a lot of time and effort, it is indeed a key factor in CNC machining.

Material selection

Choosing the right materials is very important for making high quality parts. Different materials have different physical and mechanical properties and therefore need to be selected in conjunction with specific mechanical requirements. Hardness, corrosion resistance, wear resistance, thermal stability and price are all factors considered.

CNC machining technology

In CNC machining technology, rotation speed, cutting speed and machining depth are rough parameters. CNC machining of precision parts requires more precise technology than general machining, and must adopt higher precision coordinate machine tools and related equipment.

Tools and equipment

CNC machining requires the required equipment and tools. These include CNC machines, fixtures, abrasives, linear sensors and height sensors. Ensuring the reliability and maintenance of equipment and tools is critical to avoid breakdowns and delays during processing.

Quality control

High quality and precision parts manufacturing processes require continuous quality control to ensure that final parts accurately conform to drawings and specifications. There should be corresponding inspection at each manufacturing step to ensure consistency and recognition of quality.


Finally, the manufacturing process should include the necessary post-processing steps. Treatment includes cutting, grinding, heat treatment, chemical plating, etc., to improve the durability of parts, surface quality and other requirements.

Parts measurement and testing

The parts produced by CNC machining should be measured and tested after machining to ensure their quality and accuracy. This is to prevent poor quality parts, waste and errors in the production process.

Precision parts CNC machining advantages

Precision parts CNC machining advantages

  1. High accuracy: CNC machining uses pre-programmed computer software to precisely control the movement of machine tools. That accuracy can be less than a thousandth of an inch, which human operators cannot achieve.
  2. Efficient production: CNC machining does not require manual intervention, and can continuously mass produce products without restriction. This can save time and labor costs and improve production efficiency.
  3. Repeatability: The pre-programming of CNC machining means that it is very convenient to produce the same products. Even after a long time, the product produced again using the same procedure has the same characteristics.
  4. Flexibility: CNC machining can produce almost any shape and design of complex parts. Products manufactured from designs that conventional machining cannot handle can be easily and directly completed.
  5. Programmable and automatic control: CNC machining can be programmed through CAD/CAM and other software to set the machining path, greatly improving the production efficiency and manufacturing accuracy of products. And CNC machining can realize automatic control, real-time detection in the process of parts processing, and automatically adjust the processing parameters and process flow, so as to ensure the consistency of product quality and work efficiency.
  6. Wide range of application: precision parts processing method can be applied to various materials and hardness of parts, whether metal materials or non-metallic materials, precision parts processing method can provide efficient, high quality processing means.
  7. Innovation: Precision parts processing methods are innovative and constantly evolving. With the progress of technology and the update of design concept, precision parts processing methods are also constantly improved and improved.
CNC machining defects of precision parts

CNC machining defects of precision parts

  1. Rely on technical personnel: CNC machining requires professional installation and operation, higher requirements for the operator, high technical content, the need for a long time of training and professional knowledge accumulation.
  2. Long time: precision parts processing needs to carry out multiple processing processes, such as milling, drilling, polishing, etc., each process needs a certain amount of time, so the processing cycle is relatively long, the need to wait patiently.
  3. High equipment price: Because CNC equipment needs certain technical content and special parts, the equipment price is high, the initial investment cost is high, and the demand for individuals and small enterprises is more difficult to bear.
  4. High maintenance and processing costs: compared with traditional machining, the maintenance and processing costs of CNC machining equipment will increase accordingly.
  5. Production batch limitation: CNC machining requires pre-programming, which is very suitable for mass production with high operating cost, but it cannot cope with the production of small batch products.

Precision parts CNC machining applications

Precision CNC machining: Precision CNC machining is an important application field of precision parts machining methods. Through precision milling, extension, grinding, polishing and other processes, we can manufacture various types of mechanical parts, such as bearings, gears, pump bodies, etc., to ensure the accuracy and reliability of products.

CNC machining is widely used in automotive, aviation, medical, electronics and communications industries to meet the high precision and high efficiency needs on the production line. In the manufacturing of precision parts, CNC machining equipment can process complex parts with high surface treatment requirements and geometric requirements, which is of great help to high-end machinery and equipment, aerospace and other fields, but also widely used in 3C industry, such as mobile phone, computer parts machining.


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