The new wheel and trimmed by the first wheel, and the discovery of the operation should be carried out unbalanced wheel balance test. There are two methods balancing and static balance wheel balance adjustment method. (1) Static balance method. Static balance adjustment in the balance shelves were cut sheet, find the center of gravity of the wheel by hand approach, adding weights to adjust the balance of the block position until the balance wheel, and can be in eight directions to make the wheel balance. (2) Balancing Act. The method by means of a sensor mounted on the machine, directly showing unbalance wheel apparatus rotates, by adjusting the position and distance weights will unbalance to a minimum. Compare cylindrical grinding and internal grinding: Abrasive, low speed, large surface roughness. Wheel shaft diameter is small, overhang, poor rigidity. Fast abrasion, cuts studio, chip cooling problems. Compare mill hole and reaming, broaching: adaptability, the same wheel can grind different diameters. Machinable hardened hole. Positional accuracy and correction can improve the hole axis error. Low productivity. Grinding wheel have different shapes and sizes to fit different grinding. Whereby the grinding wheel is rotated by a large centrifugal force, if there is not enough strength, cutting tablets price, grinding wheel will burst and cause a serious accident. The size of the centrifugal force proportional to the square of the grinding wheel peripheral speed, so when the grinding wheel peripheral speed of growth people to - not given value, the centrifugal force would exceed the allowed range of wheel strength, so that the grinding wheel burst, so all kinds of grinding wheel stipulate a safe operating speed, the speed is much lower with a grinding wheel burst speed. Safe operating speed of the grinding wheel on a grinding wheel in order to identify the maximum operating speed, the safety factor of 1.5. Here is an example of a grinding wheel in different sizes. Cutting film production, Tianyi abrasive (certified), cut sheet Limited by Weifang Tianyi abrasive. Weifang Tianyi Abrasives Co., Ltd. (www.wftymj.com) (www.wftymj.com) Shandong Weifang, Abrasives leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. In Tianyi abrasive leadership with the staff warmly welcome all inquiries negotiations to create a better future Tianyi abrasive.