The middle tag processing is a processing method that further expands the lower holes made by drills in advance. It is indispensable when you want to open a large hole that cannot be opened with a drill with high accuracy. In the middle of the middle processing, the inner diameter is expanded using a special tool called the middle part -time job, but there are many points to be aware of, as it is necessary to consider the hole diameter and the thickness of the part -time job. In this article, we will explain the tasks generated by middle processing and the points that you want to keep for high -precision middle processing.
In the case of middle processing, the following tasks may occur. The processing surface is difficult to see id = "" that is likely to occurthat is easy to accumulate with cutting powder
Inside the middle processing is a processing method that makes it difficult to see the processing surface because it spreads the lower hole drilled with a drill and processes the inner diameter. Therefore, it is difficult to adjust while checking the tools and processing surface status, and it is not possible to confirm that the processing is done.
Inside processing is a processing method that tends to generate chattering due to vibration because the amount of the protruding of the bytes increases. The occurrence of chattering can lead to deterioration of processing surfaces, damage to tools, and in some cases, mechanical equipment failure.
Intercus processing is a processing method that makes it difficult to discharge cutting powder and easily accumulates cut powder. In particular, the accumulation of cutting holes (holes that are not penetrated) or when the deep hole is processed is likely to accumulate, and cut powder accumulated inside is entangled with bytes, causing deterioration of the accuracy of the processing surface.
In the process of processing inside, the movement of the cutting path, which is the route at the time of cutting, is difficult to see because the lower hole is drilled. If you cannot set an appropriate cutting path, the work may interfere with the work and the work may be damaged or a part -time job.
There are the following methods to take measures for the intermediate processing issues.
The use of a process monitoring system is effective in order to eliminate the difficulty of the processing surface. By monitoring the abnormalities during processing, the processing surface, which has been difficult to see so far, indirectly, to detect the wear and deterioration of the byte to prevent the processing defect. In addition, the process monitoring system can also be expected to save the labor of the inspection process that was performed in the actual item because the measuring instrument interferes.
It is important to select a byte and adjust the cutting conditions in order to suppress the occurrence of chattering.
The ease of occurrence varies depending on the type of bytes and the angle of the blade. By selecting a byte that reduces the load in the diameter direction, it is possible to suppress vibration. Tapa -shaped bytes are also effective in suppressing chattering.
In order to suppress chattering, it is necessary to set a cutting condition to reduce the cutting resistance. On the other hand, in the case of extremely low cutting conditions, balance is important because the processing efficiency, the deterioration of the finish quality deterioration, and the occurrence of scarce due to cutting resistance. By adjusting the cutting conditions such as the cut amount, rotation speed, and sending speed to about 80%of the recommended conditions in outer diameter processing, the occurrence of scaring can be reduced while balancing.
In order to prevent the accumulation of cutting powder generated during cutting, the key to cutting the cutting path, the use of a coolant, and the promotion of cutting powder is the key.
Cutting is easier to discharge by moving the tool as if pulling out the hole. When setting a cutting path, it is effective to adopt a path that pulls out tools so that you can discharge the cutting powder once a certain process is completed, instead of continuing to process continuously.
The coolant is effective for cutting powder in addition to the cooling of the cutting point. In the case of middle processing, cut powder can be effectively discharged by adopting a slookerant that can discharge a coolant from the edge of the blade.
Cutting the cut powder makes it difficult to get involved in the byte. It is important to set the cutting conditions because the ability depends on how you use the chip breaker set in the bytes.
To prevent byte and work interference, you need to calculate how much bytes move inside the hole. It is important to check the set conditions and actual movements, such as whether they are not moving in the diameter direction when running in empty operation.
In this article, we explain the task generated by the middle processing and the points that you want to keep in mind for high -precision middle processing. Although it is a highly difficult middle processing, it is important to process it after imagining a cutting path in order to prevent contact accidents between part -time and work and machine.
