钳工基础知识(八)装（Basic knowledge of locksmith (eight)）.doc

钳工基础知识(八)装（Basic knowledge of locksmith (eight)） Basic knowledge of locksmith (eight) I. The concept of assembly Any machine equipment is composed of many parts, the number of qualified parts into parts according to the provisions of the technical requirements of the combination, or the number of parts and components assembled into machine equipment, and after adjustment and test process become qualified product called assembly. For example, a bicycle has dozens of parts, and the front and rear wheels are components. Assembly is the last process in machine manufacture, so it is the key to ensure that the machine meets all technical requirements. Assembly work is good or bad, and plays an important role in the quality of products. Two 、 assembly process 1. preparation before assembly (1) study and understand the technical specifications of assembly drawing, understand the structure of product, the function of parts and the relation between them. (2) determine the methods, procedures and required tools for assembly. (3) receiving and cleaning parts. 2. assembly The assembly also consists of components, components, assemblies, and assemblies. The whole assembly process takes place in order. (1) a component assembly that assembles a number of parts on a single component to form a component. If a transmission shaft in a reducer is assembled by a shaft, a gear, a key, etc.. (2) assembly of parts, components, components on another basis, and components (independent mechanisms). Such as lathe headstock, feed box, tailstock and so on. (3) the assembly process of assembling several parts, components and components into a whole machine is called assembly. For example, a lathe is a combination of several boxes, components, components, and parts. 3. requirements for assembly work (1) assembly should check the parts and assembly related to the shape and size, accuracy is qualified, check for deformation, damage, etc., and should pay attention to the various parts of the mark, to