Welcome to the world of CNC machine tools! As a PLC professional technician, it is important to have a thorough understanding of the various components that make up these advanced machines. One such component is the wires, which play a crucial role in the operation and functionality of CNC machine tools. In this article, we will take a closer look at the different types and markings of wires used in CNC machine tools.
Before we dive into the specifics, it is important to understand the function of wires in CNC machine tools. Wires are used to transmit electrical signals and power to various parts of the machine. They act as the nervous system, connecting all the different components and allowing them to communicate with each other. Therefore, the type and quality of wires used in CNC machine tools is crucial to their performance.
There are several types of wires used in CNC machine tools, each with their own unique properties and purposes. The most common types include power supply wires, signal wires, and control wires. Power supply wires are responsible for delivering the necessary amount of electricity to the machine, while signal wires transmit signals between different parts of the machine. Control wires, as the name suggests, are used to control the movement and operation of the machine.
Another important aspect of wires used in CNC machine tools is their markings. These markings provide crucial information about the wire, such as its type, size, and voltage rating. This is especially important for maintenance and troubleshooting purposes. Let's take a closer look at some of the common markings found on wires in CNC machine tools.
The first marking to look out for is the wire type. This indicates the function of the wire and can be identified by a combination of letters and numbers. For example, THHN (thermoplastic high heat-resistant nylon) is a common type of wire used in CNC machines for its durability and resistance to heat. Other types of wires include MTW (machine tool wire), TFFN (thermoplastic flexible fixture wire), and SJOOW (service junior oil and water-resistant).
The next important marking is the wire's size, which is denoted by a number. The most commonly used sizes in CNC machine tools are 14, 16, and 18 gauge wires. The smaller the gauge number, the thicker the wire and the more current it can carry. However, it is important to always refer to the machine's specifications to ensure the correct wire size is being used.
Another crucial marking to look out for is the voltage rating. This indicates the maximum voltage that the wire can handle safely. It is important to note that using wires with a lower voltage rating than required can result in overheating and potential damage to the machine. The voltage rating is usually expressed in volts (V) or kilovolts (kV).
Some wires may also have a temperature rating, which indicates the maximum temperature that the wire can withstand before it starts to degrade. This is particularly important for wires that are exposed to high temperatures in the machine's environment. A common temperature rating is 90°C, but some wires may have a higher rating.
In addition to these markings, wires used in CNC machine tools may also have other symbols and letters that provide information about their composition and characteristics. For example, a wire with the letters "UL" indicates that it has been tested and certified by Underwriters Laboratories, a safety certification company. Other symbols, such as a flame symbol or an "FT1" marking, indicate that the wire is flame resistant and can withstand a certain level of heat.
In conclusion, understanding the different types and markings of wires used in CNC machine tools is essential for any PLC professional technician. These wires play a crucial role in the performance and functionality of the machine, and using the wrong type or size can result in costly damages. Always refer to the machine's specifications and use wires that are appropriate for the specific application. With proper knowledge and attention to detail, you can ensure the smooth and efficient operation of CNC machine tools.
Thank you for reading and happy wiring!