Question 2: How to dress this centerless diamond grinding wheel? I didn't expect that. It was not repaired with a harder tool than it. On the contrary, it was repaired with something softer than it. You can use steel bars with a diameter of 30-40mm, 45# or A3, and polish them repeatedly, as long as you feed them back and forth several times. Copper bars are ok, just try them.
Question 3: How to repair the diamond grinding wheel is difficult. If it is metal bonding, it can be repaired by electric spark. If it is a ceramic combination, it can be repaired with a roller, but the speed is slow and the cost of the wheel is high.
Question 4: How to repair the diamond grinding wheel? You can repair it or use an oilstone. The former has high precision and the latter is rough.
Question 5: What can be used to dress the diamond grinding wheel? As long as your SDC diamond grinding wheel is not electroformed (resin and bronze can be combined), we provide you with two simple dressing methods: a. Use soft iron (unhardened), red copper and stainless steel, and make use of the characteristics of these materials to combine hard and soft, and it can be repaired in about 20 minutes. B. It takes about 10 to repair with molybdenum. However, molybdenum is more expensive. Tips: When dressing, it is necessary to reduce the speed of grinding wheel and wash cutting fluid, and the feed rate needs to be above 0.03 to get dressing effect. Note: In the field of diamond grinding wheels, your problems will be encountered every day, and the above methods are also professional suggestions of the industry. This practice is called true circle correction and sharpening. In addition, I suggest you know more about abrasives (SDC. CBN) particle size (120 #150 #170 # 200 # 230 # 270 # 325 # 400 #-bonding degree before using diamond (J L N P R). And grinding essentials, such as grinding wheel speed, coarse grinding and fine grinding feed, bed moving speed, etc. You will ask such a question, which shows that you are still in the basic stage but have a strong thirst for knowledge. According to the above points, you can grasp the key points in a short time and make rapid progress. I sincerely wish you an early success.
Question 6: Tell you some tips for dressing diamond grinding wheels (1) Dressing grinding wheels with diamond pens According to the size of diamond particles and their distribution in pens, diamond pens are divided into chain, layered, row and powder. Using alloy with strong bonding force as bonding agent, diamond grinding wheel particles are not easy to fall off during use, and there is no need to polish them halfway until they are used up. (2) Dressing the grinding wheel by rolling method Dressing the diamond grinding wheel by rolling method, the grinding wheel drives the rolling wheel (made of metal, cemented carbide or abrasive) to rotate at the speed of 1~2m/s through deceleration. The roller exerts a pressure of about 3~5MPa on the grinding wheel, so that the abrasive particles on the surface of the diamond grinding wheel break or fall off. The grinding wheel dressed by rolling method has good cutting performance and low cost, but the surface roughness of the workpiece is large, the rolling wheel is easy to wear, the service life is short and the accuracy is easy to lose. Therefore, this dressing method is mainly used for small batch and low precision form grinding. After dressing, the hardness uniformity of grinding wheel is good, otherwise the grinding wheel will produce local shape distortion. The defects of electroplated diamond grinding wheel are: there is no strong chemical metallurgical bond between the coated metal and the matrix and the abrasive, and the abrasive is actually mechanically embedded in the coated metal, so the clamping force is small, and the diamond particles are easy to fall off (or the coating falls off in pieces) in high-efficiency grinding with heavy load, resulting in overall failure; In order to increase the retention, it is necessary to increase the thickness of the coating. As a result, the height of abrasive particles and chip space are reduced, the grinding wheel is easy to block, the heat dissipation effect is poor, and the surface of the workpiece is easy to burn. At present, the manufacturing of electroplating grinding wheels in China has not reached the optimal design of grinding wheels according to the requirements of technological conditions. These inherent shortcomings of single-layer electroplated diamond grinding wheel will inevitably greatly limit its application in high-efficiency grinding. In recent years, with the rapid development of high-speed grinding and ultra-precision grinding technology, higher requirements are put forward for grinding wheels. Ceramic and resin bonded grinding wheels can no longer meet the needs of production. Metal bonded grinding wheels are widely used in production because of their remarkable characteristics such as high bonding strength, good formability and long service life. Metal bonded diamond grinding wheels are mainly divided into sintering and electroplating according to different manufacturing methods. In order to give full play to the role of superhard abrasive, a new type of grinding wheel, namely, high-temperature brazing single-layer superhard abrasive wheel, has been developed abroad since the early 1990s. At present, this kind of grinding wheel in China is still in the research and development stage.
Question 7: How to dress the diamond grinding wheel? Dressing with green carbon grinding wheel.
Question 8: Why dressing the grinding wheel? How to trim? In use, the grinding wheel will be consumed with the grinding process, which leads to one situation: the grinding wheel becomes dull, and the other situation is that the grinding wheel loses its original shape and must be trimmed to restore it to a good working condition. Dressing is divided into shaping and sharpening, corresponding to the above two kinds of grinding wheel changes.