CNC milling machine is one of the powerful tools to support the mechanical processing. The technological capabilities of the machine help the business productivity increase many times.
CNC milling machine is a common mechanical tool that is easy to find in almost every workshop, from small to medium sized factories to large-capacity production plants.
Today, we do not investigate the structure, specifications of CNC milling machines . We focus on the advantages and disadvantages of CNC milling machines and kinds of today CNC milling machines.
Performance of CNC milling machines.
CNC milling machines are capable of cutting a wide variety of machine parts. Commands through the encrypted programming language allow the machine to understand and control their operation.
The cutter has the ability to move in multiple directions: straight, horizontal, vertical, circular and moving up – down even in 3D. Multi-axis machines have a wide range of machining profiles, and they also feature undercut parts.
The main functions of the CNC milling machines are milling, drilling, taro, bending … with precision up to 0.01mm. In addition, CNC milling machines are also used to measure distances with high accuracy.
CNC milling machines can also dynamically change the knives automatically, which enables the machining of different shaped parts to operate continuously, ensuring accuracy and time is considerably shorter comparing to other machines.
Disadvantages of CNC Milling Machine
CNC milling machines are capable of cutting a lot of details, however, on the surface of the details usually leave a sharp knife. Therefore, for products requiring gloss, details must be cooled and polished again. In addition, the details required are roughness, we proceed to fire the surface details by electric shot or other machines to create the surface that the product requires.
Machines are hard to work with, especially with high hardness (eg HRC 61 and above). When processing materials too hard, knives are brittle, scratch ….
The milling machine has a circular shape so that when machining products that do not allow the supply of R in the corner we must do other methods such as cutting wire, firing … The precision of the machine is not high when machining the parts It has a small tolerance of 0.002 or less.
For chip details, workpieces need to be securely clamped to avoid product deformation due to the large impact force between the cutter and the workpiece surface. For details of the cavities, divide the component into several layers before proceeding with the CNC milling machine.