Chamfering is a concept in solid geometry, which means that the surface of a polyhedron is depressed inward to make its corner face more prominent. It is a processing method. Mathematically, this machining method can be used to measure the angle and side length of irregular polyhedron conveniently, so as to better study the properties and characteristics of this geometry.

Chamfering is not only widely used in mathematics, but also common in engineering design. For example, in the design of mechanical parts, chamfering can usually be used to strengthen the connection and support between mechanical parts, thus improving the stability and reliability of the whole mechanical system. In addition, chamfering can also be used in plastic mold processing to avoid burr and damage of the mold, thus improving production efficiency and service life of the mold.

Chamfering, as an important material processing technology, has broad development prospects. With the continuous progress of science and technology and the increasing development of manufacturing technology, chamfering technology will be constantly innovated and updated to better meet people's processing needs for various materials. Especially in automobile, aviation, aerospace, medical and other high-tech fields, chamfering technology will be more widely used, which will help the development of various industries.