The use of programmable logic controllers (PLCs) in the manufacturing industry has greatly improved the efficiency and precision of machine tools. One type of PLC that has gained popularity in recent years is the built-in PLC for CNC machine tools. This article will discuss the structural features and main models of this type of PLC, providing insights for PLC professionals and technicians.
The structural features of a built-in PLC for CNC machine tools are mainly reflected in its compact size and integration with the machine tool. Unlike traditional PLCs that are mounted externally, built-in PLCs are embedded within the machine tool’s control cabinet. This not only saves space but also reduces wiring and improves the overall stability of the system. In addition, built-in PLCs are designed to withstand harsh industrial environments, such as high temperatures and vibrations, making them ideal for use in CNC machine tools.
There are several main models of built-in PLCs for CNC machine tools, each with its own unique features and capabilities. One popular model is the Mitsubishi MELSEC iQ-R series. It is equipped with a high-speed CPU and multiple communication options, allowing for fast and reliable data processing and transfer. In addition, it has a built-in motion control function, making it suitable for complex motion control applications in CNC machines.
Another widely used model is the Siemens SINUMERIK 840D sl, which is specifically designed for use in CNC machine tools. It comes with a powerful processor and a user-friendly interface, allowing for easy programming and monitoring of machine processes. Additionally, it has a built-in safety function, ensuring the safety of operators and machines during operation.
The Fanuc Series 30i/31i/32i-B CNC system is also a popular choice among manufacturers. It boasts a high-speed processing capability and a large number of input and output points, making it suitable for high-speed and high-precision machining. It also has a built-in PMC (programmable machine controller) function, which allows for flexible customization and enhancement of machine tool functions.
In addition to these main models, built-in PLCs for CNC machine tools are also available from other manufacturers such as Allen-Bradley, Beckhoff, and Omron. Each of these models has its own unique features and advantages, catering to different needs and preferences of manufacturers.
One of the key benefits of using a built-in PLC for CNC machine tools is the streamlined integration of control and motion functions. As the PLC is built-in, it has direct access to the machine’s servo and spindle drives, allowing for tighter synchronization and coordination between these functions. This results in improved machine performance and accuracy.
Another advantage is the ease of maintenance and troubleshooting. With a built-in PLC, all components are housed within the machine itself, making it easier for technicians to access and identify any issues. This saves time and effort, reducing downtime and improving productivity.
Furthermore, built-in PLCs are designed to be user-friendly, with intuitive programming software and a variety of diagnostic tools. This makes it easier for technicians to set up and modify machine programs, as well as troubleshoot any errors that may occur during operation.
In conclusion, built-in PLCs for CNC machine tools offer a range of benefits for manufacturers, including compact size, integration with machine tool functions, and ease of maintenance and programming. With different models available from various manufacturers, there is a suitable built-in PLC for every CNC machine tool application. As a PLC professional technician, it is important to stay updated on the latest developments and advancements in built-in PLC technology to ensure the best performance and efficiency of CNC machine tools.