The benefits and application of CBN Inse
The advancement in technology makes it increasingly difficult to make large-scale bearings that are high-precision. The tolerances have also reached P4 and P5. Large bearings typically use CNC Lathe as well as Grinding Tools as a result due to the limitations of grinding, the efficiency is lower and the expense of the tool is expensive.
Superhard cutting tools full cbn inserts are used in a variety of cold processes to replace grinding. This article will show you how to turn the hard bearing rings. The roughness of the surface could exceed Ra0.40.8 and be in line with the requirements of the bearing.
The character of the inserts for hard turning bearings
CBN Insert is the best material for machining ferrous metals in the present times, and has excellent wear resistance and hardness and is second to diamond tools. CBN Insert is capable of cutting materials that have high hardness.
CBN Insert is stable and has a high red hardness at high temperatures. As the temperature increases and the materials begin to soften, they will. This will benefit the process of cutting.
CBN Insert has high antioxidant capacity, and will not react with iron materials in the temperature 1200~1300 ?,however it is likely to undergo hydrolysis around 1000 ? So when we use solid cbn insert machining bearings, it is recommended to use dry cutting methods.
CBN Insert has low Co-efficient of friction, and will not readily make the chipping layer and can improve the quality of the surface of the piece.
CBN materials for hard-turning bearings
The allowance for machining large-scale bearings is huge and typically, we use a solid cbn insert to try to minimize the cutting process and enhance the efficiency. The most popular cbn material is the BN-S20 solid CBN insert.
BN-S20 belongs to solid cbn insert, and the hardness is approximately HRC951000. It uses ceramic as the binder that will ensure highest wear resistance and chemical resistance at high temperatures.
For instance, to wind power bearings of diameter of 1900mm and thickness of 130mm, it will take about 18 hours. If you employ grinding, it takes about 4 hours. If you opt for turning, it takes about 4.5h. The roughness could be as high as Ra0.3um. Turning can have a processing efficiency about four times higher than grinding. The total cost is only 20 percent.
The benefits of inserts made from cbn hard turning bearings
(1) The efficiency of the company has increased numerous times,
(2) It can be purchased in large quantities and is very long-lasting.
(3) Lower pollution: The chips can be easily reclyed as opposed to grinding. Turning process doesn't require cutting fluid.
Conclusion
If we employ CBN cutting tools that are for hard turning bearings using CNC Lathe this will result in an excellent working efficiency and reduce the cost of the tool. As the technology develops in the cutting tools industry, many bearings makers use cbn insert instead of grinding. |
Date(s): November 6, 2022. Album by Brennan Crosby. 0 Total. 0 Visits. |
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