The concept of filing and the structure of a file (1) the concept of filing; the use of a file from the surface of a part to file away excess metal, so that the part to meet the requirements of the size, shape and surface roughness of the operation called filing. It has a wide range of applications, which can be used for filing external surfaces, holes, trenches, and various complex surfaces.
File is the main tool for file cutting. It is usually made of carbon tool steel T12 or T13. After heat treatment and hardening, the hardness of the cutting part reaches above 62HRC.
(2) file structure: the file is mainly made up of two parts: file body and file handle. The file face is the main working face for filing. There are many files on the file. Each tooth of a file is equivalent to a handful of chips in cutting the material. The pattern of a file is a pattern of regular arrangement of the teeth of a towel file. The tooth patterns of a file are divided into two types: single and double tooth patterns. The single tooth pattern has only one directional tooth pattern, which is often used to file soft materials such as aluminum and copper; the double tooth pattern has two directional tooth patterns, the shallow one is called the bottom one, and the deep one is called the face one, which is suitable for file cutting of hard materials.
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