CNC machining (computer numerical control machining) is a method of machining using computer-controlled CNC machine tools and is widely used in parts manufacturing in various industries. It controls the machine tool to cut along the specified path through the pre-written processing program, thereby realizing the processing of the workpiece. The following will introduce the process flow of CNC machining.

First, design and formulate the processing technology

Before CNC processing, it is first necessary to design the product and formulate the processing technology. Designers use CAD (computer-aided design) software to design products based on their requirements and functions. Then, the process engineer formulates the processing technology based on the product's shape, material and processing requirements, including selecting appropriate cutting tools, cutting parameters, cutting paths, etc.

Secondly, write the processing program

The machining program is the core of CNC machining. It contains information such as machine tool movement instructions, cutting parameters, and cutting paths. Writing processing programs requires the use of CAM (computer-aided manufacturing) software to convert the product's design files into processing programs. When writing processing programs, factors such as the cutting performance of the material and the rationality of the process need to be considered to ensure the efficiency and quality of the processing process.

Then, perform machine tool clamping and tool clamping

Before CNC machining, the workpiece needs to be clamped on the machine tool and the appropriate tool selected for cutting. Machine tool clamping is the process of fixing the workpiece on the machine tool. It needs to consider the shape, size and processing requirements of the workpiece. Tool clamping is the process of installing the tool on the machine tool. It requires selecting the appropriate tool type and specification, as well as the correct installation method. The accuracy and stability of machine tool clamping and tool clamping have an important impact on machining accuracy and efficiency, so they need to be adjusted and inspected carefully.

Next, perform processing operations

After the machine tool clamping and tool clamping are completed, CNC machining operations can begin. The operator inputs the written processing program into the CNC machine tool controller, and then through the controller's instructions, the machine tool cuts according to the path and speed specified by the program. During the processing process, the operator needs to monitor the processing status and adjust cutting parameters and tools in a timely manner to ensure processing quality and efficiency.

Finally, perform processing inspection and trimming

After completing CNC machining, the machined parts need to be inspected and trimmed. Inspection can use measuring tools and equipment to detect size, shape and surface roughness to verify whether the processed parts meet the requirements. Trimming is the process of trimming, grinding or polishing the workpiece to eliminate possible processing defects and improve the accuracy and surface quality of the workpiece.

In summary, the CNC machining process covers the design and formulation of machining processes, writing of machining programs, machine tool clamping and tool clamping, machining operations, and machining inspection and trimming. Each link requires accurate operation and strict control to ensure the efficiency of the processing process and the quality of the processed parts.

The development of CNC machining provides high-precision and efficient parts manufacturing solutions for various industries. Compared with traditional manual operations and conventional mechanical processing, CNC processing has the following advantages:

1. High precision

CNC machining can achieve high-precision parts processing through the precise control of CNC machine tools and the high-speed rotation of cutting tools. The processing accuracy can reach sub-millimeter or higher level to meet the requirements of complex parts.

2. High efficiency

CNC processing adopts computer programming and automatic control, which can realize automatic and continuous processing, greatly improving production efficiency. It reduces the time and workload of manual operations and improves production efficiency and capacity.

3. Flexibility

CNC machining can perform flexible processing according to different product needs and design requirements. By simply modifying the processing program and adjusting the cutting tools, different parts can be processed, avoiding the trouble of replacing equipment in traditional machining.

4. Repeatability

CNC machining can achieve precise cutting paths and processing parameters by writing processing programs and automated control, ensuring consistency and repeatability of processing. It is not affected by the operator's technical level and experience, reducing the impact of human factors on processing quality.

5. Versatility

CNC machining can realize a variety of machining operations, such as milling, turning, drilling, tapping, etc. One CNC machine tool can complete a variety of processing tasks, reducing equipment investment and floor space.

To sum up, CNC machining provides part manufacturing solutions with high efficiency, high precision, flexibility, repeatability and versatility. It is widely used in various industries such as aerospace, automotive, electronics, medical equipment, mold manufacturing, etc.

In the aerospace field, CNC machining can manufacture complex-shaped aerospace parts, such as turbine blades, engine parts, aerospace structural parts, etc. Due to the high precision and repeatability of CNC machining, the quality and performance requirements of parts can be ensured.

In the automotive industry, CNC machining can manufacture automotive engine parts, chassis parts, body parts, etc. Through CNC machining, high precision and consistency of parts can be achieved, improving the performance and safety of automobiles.

In the electronics field, CNC machining can manufacture electronic parts, circuit boards, casings, etc. Due to the high efficiency and flexibility of CNC processing, it can meet the rapid development and production needs of electronic products.

In the field of medical equipment, CNC processing can manufacture medical device parts, artificial joints, dental equipment, etc. The high precision and repeatability of CNC machining can ensure the quality and safety of medical equipment.

In the field of mold manufacturing, CNC machining can manufacture various types of molds, such as injection molds, die-casting molds, stamping molds, etc. Due to the versatility of CNC machining, high-precision machining of complex molds can be achieved.

Overall, the development of CNC machining provides various industries with high-efficiency, high-precision and flexible part manufacturing solutions. It can control machine tools through computer programs for automated processing, greatly improving production efficiency and product quality.

One of the advantages of CNC machining is high precision. Due to the use of computer program control, very precise processing can be achieved, reaching micron-level accuracy requirements. This is very important for parts that require precision fit, such as gears, threads, etc.

Secondly, CNC machining has high flexibility. By replacing different cutting tools and adjusting the machining path, parts of various complex shapes can be manufactured. Moreover, the production of different products can be achieved by simply modifying the program without redesigning and manufacturing new tooling.

CNC machining also offers repeatability. Once the correct machining procedures and parameters are set, the machine tool can continue to operate and maintain consistent machining quality without manual intervention. This is important for high-volume production to ensure that each part meets specified size and quality requirements.

Additionally, CNC machining offers versatility. By selecting different tools and processing methods, a variety of processing operations such as drilling, milling, cutting, and turning can be realized to meet the processing needs of different parts. This makes CNC machining a versatile manufacturing process.

Overall, CNC machining is an efficient, precise, flexible and reliable part manufacturing solution. With the continuous development of technology, CNC machining will play an increasingly important role in various industries and promote the progress and development of the manufacturing industry.