CNC processing technology is like a brief history of industrial development. In the past, we could only rely on manual measurement, cutting, and engraving workflows. Now, using CNC processing technology, automated production can be carried out in a more accurate and faster manner. Technology not only replaces manpower, it can even perform more precise and accurate calculations, and efficiency and quality great progress.
CNC，the full name is Computer Numerical Control, is a computer-assisted production method that uses digital manufacturing, improving the performance.
Production quality plays an important role in the modern industrial manufacturing process. he design process of CNC machining and manufacturing.
Engineers will first create a model of the product on computer-aided design software and generate a CAD file. Then the CAD file is converted into G code for machine reading. During this process, the engineer will set up all the processing steps, the machine will follow these commands and complete . so this process is very important.
After all prior confirmation work is completed, production can begin. After the machine starts operating, it will automatically produce according to the original settings.
The operation of CNC engraving machines ranges from 2.5-dimensional, 3-dimensional to 5-dimensional according to the purpose of the machine. Taking 3D as an example, the operation of the machine mainly relies on the coordinate axes in the three directions of X-axis (from left to right), Y-axis (from front to back), and Z-axis (from top to bottom) .
The 5-dimensional technology is based on the 3-dimensional technology and adds an optional rotation axis to each of the two axes. The CNC machining process can rarely be completed with only a single tool. Generally speaking, the machining process requires the interactive use of multiple cutting tools to complete.
There are many types of tools for processing, and each tool has its own suitable angles and uses. The use of different tools creates more possibilities in the manufacturing process. Common cutting tools include flat milling cutters, bullnose milling cutters, ball milling cutters, drill bits, etc. Flat milling cutters are suitable for material hollowing and vertical wall processing, bullnose milling cutters are suitable for rapid material removal. Milling cutters with different characteristics can make different types of cutting or engraving. When using different milling cutters, please note that different materials have different tolerances to milling cutters. Therefore, the type, speed and direction of the milling cutter will affect the processing results.
When manual production is used, all measurements are measured and drawn by craftsmen, so errors are inevitable during the manufacturing process. CNC machining can manufacture parts with very strict tolerances. The so-called tolerance refers to the error range of the product allowed by relevant regulations. Under normal operation, the tolerance value of CNC processing is smaller than human hair (human hair is about 0.017mm). For example, the common tolerances of metals and plastics are about ±0.125mm, precision manufacturing tolerances are about ±0.025mm, and special processing such as polishing, the tolerances are about ±0.0012mm .
CNC machining is a method of subtractive manufacturing. The so-call subtractive manufacturing, as the name implies. The production method opposite to subtractive manufacturing is called additive manufacturing, or 3D printing. Compared with subtractive manufacturing, additive manufacturing creates new objects through the injection and stacking of materials during the manufacturing process.
The types of raw materials suitable for CNC processing are quite wide. Common materials include metals, metals and gold, such as aluminum alloys, steel alloys, brass, etc.; or plastics, ABS, Delrin and other resins, man-made fibers nylon, foam plastics, and other composite materials, wood, leather, etc. Engineers will use different cutting tools, operating speeds, feed speeds, and coolant amounts to design the manufacturing process based on the different characteristics of the materials. Because CNC processing is suitable for a variety of raw materials, CNC processing technology is widely used in industry. For example, from aerospace technology to the manufacturing of sporting goods and other products.
CNC machining is a highly automated manufacturing technology. During the manufacturing process, you only need to set the workflow, and the machine can complete production according to the instructions, greatly shortening the manufacturing time and avoiding errors that may occur in manual manufacturing. The cost of repetitive manufacturing is low, and there is no need to redesign or measure. Just import the original CAD file, set it up, and then you can produce it automatically. Therefore, CNC machining is very advantageous for medium-volume manufacturing.
With the popularization of CNC processing technology, CNC machines are no longer exclusive to factory production, and CNC technology has gradually entered daily life. More and more operators are developing small CNC engraving machines with lightweight bodies, simple and clear assembly processes, and diverse specifications to meet the different needs of consumers, allowing the public to choose the one that suits them according to their needs. CNC engraving machine. With simple instructions, you can use a CNC engraving machine to complete simple industrial designs at home. Even if you don’t have superb craftsmanship skills, you can still design your own unique artwork on wood and leather and enjoy your own home studio!
