The CNC precision parts processing manufacturer said that the strength of the parts refers to the ability of the parts to work without fracture or plastic deformation beyond the allowable limit, which is the most basic requirement for normal operation and safe production of the machine. The principles and measures to improve the strength of parts are as follows:
① increase the size of the dangerous section of parts, and reasonably design the section shape to increase the inertia moment of the section;
② High strength materials shall be used to improve the strength and reduce the internal stress, and the processing technology shall be controlled to reduce or eliminate the micro defects;
③ Try to reduce the load on the parts;
④ Properly involve the structure of parts to reduce stress concentration.
The CNC precision parts processing manufacturer said that the rigidity of the parts refers to the ability of the parts to work without producing more than the specified elastic deformation. This requirement is only for those parts whose working performance will be reduced due to excessive elastic deformation. The principles and measures to improve the overall stiffness of the parts are as follows: properly increase the section size of the parts, reasonably design the section shape of the parts, reasonably add reinforcing ribs, and adopt multi point structure; The principles and measures to improve the contact stiffness of parts include: improving the machining accuracy of contact surface or appropriately increasing the contact area to reduce the unit pressure, etc.
The CNC precision parts processing manufacturer said that the life requirement of the parts is to require the parts to keep normal operation during the expected working period without scrapping. This requirement is mainly put forward for those parts that are worn or corroded when working under variable stress. As the main factors affecting the fatigue limit of parts are stress concentration, size, surface quality and environmental conditions, the main measures to improve the life of parts are as follows:;
① Properly involve part structure to reduce stress concentration;
② Adopt processing or surface strengthening treatment to improve the working surface quality of parts;
③ Reasonably select matching materials, lubricants and lubrication methods of friction pairs to improve the wear resistance of parts;
④ Select corrosion-resistant materials to manufacture parts working in corrosive media;
⑤ Use heat treatment to improve the mechanical properties of part materials, or use rolling, shot peening and other processes to generate favorable residual stress on the surface of parts.
CNC precision parts processing manufacturers said that the processing requirements of the parts are that under the given process conditions and production levels, the parts can be manufactured with less cost and labor, and easy to assemble. The structure of parts shall be reasonably designed from the aspects of production batch, materials, blank production, processing method, assembly process, use requirements, etc. The economic requirements of parts are to use lower costs and less man hours to manufacture parts that meet the technical requirements, which is closely related to the processability of parts and affects the economic efficiency of machinery to a large extent. Measures can be taken to reduce material consumption, adopt small or no allowance blanks, replace expensive materials with cheap materials, only use high-quality and expensive materials in key parts of parts, and try to use standard parts to improve the economy of parts.