9 vantagens da usinagem CNC em relação à usinagem convencional

9 advantages of CNC machining over conventional machining

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With the development of personal computers, number systems reached all sectors. The same applies to manufacturing. Today, the benefits of CNC machining are popular among many manufacturers in many industries for its manufacturing and production applications.

CNC systems have become an inseparable part of modern machining technologies. “CNC” stands for Computer Numerical Control and the principle is: the machine tool mechanisms are connected and united by a special digital control system. A machine operation that can absolutely replace manual work. At Wayken, CNC prototyping techniques have greatly improved thanks to the revolutionary innovation of the CNC machine. We gained some in-depth insights into the difference between traditional and CNC machining, as shown below:

The principles of conventional and CNC machining

This system consists of a hardware part for computing purposes and a software part. The operator interacts with the software to monitor machine tool parameters and create CNC programs.

NC programs are basically lists of instructions on how the machine tool should proceed to machine a specific part. The NC hardware reads the old program line by line and instructs the machine tool to act accordingly.

In conventional machining, all movements of the machine tool are controlled directly by the operator. Determines when and at what feed rate the tool is moved and when and where it stops. To increase accuracy, the operator often uses special gauges and rulers integrated into the control levers.

The advantages of CNC machining

1. Job security

CNC machining saves lives first and foremost. The operator of a CNC machine is safely separated from all sharp parts by a special protective construction. He can still see what is happening on the machine tool through the glass, but he does not need to get close to the milling machine or spindle. The operator also does not need to come into contact with the refrigerant fluids. Depending on the material, some liquids can be dangerous to human skin.

Advantages of CNC-1 machining

2. Labor Economy

Conventional machine tools required constant attention. The operator himself moved each part of the tool. This meant that each worker could only work on a single machine tool. With the beginning of the CNC era, the situation changed drastically. Most parts take at least half an hour to process at each setting. The CNC machine tool, on the other hand, does the cutting process by itself. You don't need to touch anything. The tool moves automatically and the operator only needs to check the program or configuration for errors. However, CNC operators found they had a lot of free time. This time could be used to work on additional machine tools. So one operator, many machine tools. This means you can save on personnel.

Advantages of CNC-2 machining

3. Minimal configuration error

Conventional machine tools rely on operators' experience with measuring tools. Of course, great employees can configure parts with great precision. However, there are few excellent operators in the country. For this reason, many CNC systems use a special coordinate measuring probe. It is generally installed as a tool on the spindle and the fixed part is touched with the probe to determine its position. The zero points of the coordinate system are then determined so that the configuration error is minimal.

Advantages of CNC-3 machining

4.Excellent machine tool health monitoring

Conditional machining required the operator to “feel” his machine tool very precisely. This means he had to identify machining errors and dull cutting tools quite instinctively and with experience. Even so, your decisions may not have been ideal. Modern CNC machining centers are equipped with various sensors. You can monitor torque, temperature, tool life and other factors while the part is being machined. Based on this information, you can optimize the process in real time.

For example, you see that the temperature is too high. Higher temperatures mean tool wear, poorer metal properties, etc. You can simply reduce the advance or increase the coolant pressure to correct the problem. Although many people claim otherwise, machining is the most widely used manufacturing method today. This process of removing material, piece by piece, was developed in the past and is now a precise and improved manufacturing tool. Every industry uses machining to some extent. There are no exceptions. However, some industries benefit more from machining than others.

5. Stable replication accuracy

What is more stable than a verified computer program? The movement of the instrument is always the same because its accuracy depends only on the precision of the stepper motors. In conventional machining, replication accuracy varies significantly as it depends on the operator. And human error is always greater than that of a program.

6. Fewer test runs

In conventional machining, some test parts are unavoidable. The worker has to get used to the technology and will certainly miss something during the first part and testing of the new technology. CNC systems have a way of avoiding test runs. They use visualization systems that allow the operator to actually see what is happening to the part after all tool passes have been completed.

7. Complex surfaces are easy to produce

Conventional, high-precision production of complex surfaces is almost impossible. It requires a huge amount of manual work. CAM systems can AUTOMATICALLY create toolpaths for any surface. You don't need to put any effort into it. This is one of the biggest advantages of modern CNC machining technologies.

Advantages of CNC-4 machining

8. Higher cutting parameters

High-speed machining is only possible due to the sealed cutting zone. At these speeds, chips fly everywhere at high speed. The chips are followed by a shower of coolant as they are supplied under high pressure during high-speed machining. Manual operation is simply impossible at speeds of 10,000 rpm or more. The cutting speed is high, and it is very important to keep the feed speed and chip width stable to avoid vibration. This is impossible to achieve manually.

9. Greater flexibility of machine tools

The traditional method consisted of a milling machine making grooves or planes, a lathe making cylinders and cones, and a drill press making holes. CNC machining can combine all of these into one machine tool. The ability to program the tool path allows you to recreate any movement on any machine tool. So we have milling centers that can make cylindrical parts and lathes that can mill grooves. All this to allow fewer part configurations.

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