Computer Numerical Control- CNC machine revolutionized the manufacturing industry a couple of decades back. This technology brought accuracy, precision, and efficiency. When humans make something, it is almost impossible for them to make it exactly the same every time. But machines can do this.It means the computer can convert the design that is produced by a Computer Aided Design application into numbers. These numbers are actually coordination of a graph and they are capable of controlling the movement of CNC cutters. In this way, the computer can control the cutting and shaping of the materials. Also, the machines can very easily follow the instructions regarding the measurements. Unlike humans, they do not get tired so that they can work all day.
Working Of CNC Machine-
How the CNC Works
Everything that is run by an operator for running the conventional CNC Plasma cutting machine tools is run by the usage of CNC controls. Once the machine is set up for running, running the machine is quite a simple work. In fact, the operator has to perform little less work as the device is automated. The operators are required to do other things with these CNC operations like making adjustments, measuring metal sheets etc.
The Motion Control
Every CNC machine has two or more than two programmable directions of motion that are known as Axis. The axis of motion can be linear or rotary. Linear means straight line and rotary means circular path. The complexity of these machines depends upon the axis. Speaking generally, how many axis the machine has makes it clear if the machine is simple or complex. These axis are required for causing motions that is necessary for starting the manufacturing process.
The Programmable Accessories-
Having a single or two axis means the machine is not very much productive. You cannot cut a lot of metal sheets after using the machine. Most of these CNC devices are programmable in other ways too. The type of this CNC Plasma cutting machines has to do a lot of work with these programmable accessories.
The Machine Centers
The machine centres are divided into three sections and these are Automatic tool changer, Spindle speed and activation and lastly the Coolant.
What is Automatic Tool Changer?
In a tool magazine, the machining centres can hold many tools. If required, the necessary toll can be automatically placed in the spindle for machining purpose.
Know about Coolant: For lubrication and cooling purposes, many machine operations require coolant. The coolant can be a turn on and off within the coolant.
Speed and Activation in Spindle: The spindle speed can be easily specified and it can be tuned on a forward or reverse direction. The spindle can too be turned off.
A CNC program is nothing more other than an instruction set. The program is written in a sentence-like format and the control is going to execute it in sequential order and it is used in CNC Plasma cutting machines. The CNC control has several other purposes too. Important operator input can be easily used in the program. CNC control allows all the machine work to be manipulated.
CNC Machines use machine readyfor the laser cutting. The DXF files from the CAD program with right G-Code is sent to the CNC machine for the laser cutting.
Benefits of CNC machine
1. Whether it is wood, metal or something else, CNC can handle it. You can make parts, pieces and even the whole project with any almost material using this machine. The other technologies, on the other hand, can work with very few materials, like plastic.
2. There is a lot of documentation available on the internet that you can use to learn new techniques. The CNC community has many forums and blogs that can tell you almost everything you should know while operating one of these machines.
3. The CNC machines are much faster in operation.
Drawbacks of CNC
For operating CNC machine, you not only need to learn programming but also some other techniques. This makes it a little more complicated. Also, you will be able to operate it properly only if you have a technical background.
CNC machines are automated, but this does not mean that no human intervention is required. These machines can be very dangerous if allowed to operate without supervision.
After considering all the mentioned parameters it is clear that CNC is phasing technology but it still has a long road ahead of it until a suitable replacement technology in terms of being precise, having a low learning curve, low operational cost and ability to churn out hundreds if not thousands of pieces per day comes out.