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Demystifying the quality requirements to avoid cracking of the cutting piece
02-01-2019, 12:05
Post: #1
Demystifying the quality requirements to avoid cracking of the cutting piece
It is not difficult to find out that the operators of mechanical product processing often find that the durable cutting off wheel is broken during the process of using the cutting piece in production and processing, which not only has certain danger, but also affects the processing efficiency and increases the processing cost. So how do you avoid cracking of the cutting piece? For this purpose, the cutting piece has the following quality requirements:
1, to have sufficient strength, the normal cutting blade rotation strength must reach 1.5 times the speed of use.
2, to have a good flatness, the flatness of the cutting piece should be controlled within 0.3mm.
3. Select the appropriate cutting piece. Because the use of the cutting piece is more complicated, you must choose the hardness of the cutting piece according to your own needs. If it is too hard, it will break. If it is too soft, it will increase the cost.
The above is the quality requirement of Xiaobian to avoid the rupture of the cutting piece. Only by ensuring the safety of the processing equipment can the efficiency of processing and production be improved.
The completion of mechanical products often requires multiple processes, and cutting and forming is one of the important process steps. Usually, the cutting of each product is required. However, since the objects to be cut in the production process are often materials with a certain hardness, which leads to the occurrence of cracking of the cutting piece, what is the cause of this? Today, we will analyze in detail why the imported cutting piece is broken during use:
The imported cutting piece is broken during use: we often see that the cutting piece is normal when it is used, and the grinding wheel is broken when the cutting is performed in the normal 1/3 state. The analysis may be due to the following reasons: the flatness of the cut piece, the unevenness of the cut piece, the high hardness of the cut piece, and the lack of toughness of the cut piece resin.
1. When the flatness of the cutting piece is poor, the cutting surface is curved. As the cutting depth increases, the cutting piece is subjected to lateral stress increase. When the round trip is repeated, the grinding wheel will be cracked and cause "soft film". rupture.
2. When the cutting piece is not uniform, the stress will accumulate in the weak tissue, causing the rupture due to the torque force, thermal stress, tremor and other factors of the cutting process.
3. When the hardness of the cutting piece is high, the radial torque force received by the high performance cutting disc will increase, and since the thickness of the cutting piece is usually less than 4 mm, the cutting piece may be broken.
4. When the cutting piece resin lacks toughness, since the grinding wheel piece is always in a negative pressure state during the cutting process, lateral stress is inevitably generated, and when the cutting piece cannot resist the lateral force, the grinding wheel piece is broken.
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