Experience and skills in design and manufacturing of die design and manufacture of mold. The design is reasonable or not, it can be confirmed by the test mode, and the mould is accomplished by the multiple test and repeated modification. Production practice, some of the mold once into the production line, but often will produce a variety of problems, can not meet the production requirements or technical requirements, resulting in the production line of non normal suspension, etc., bring many factors. So, how to improve the stability of the mold, the mold manufacturing enterprises are facing the reality of the problem.
      Stability and influence factors of die and die forming
      What is stability? Stability and stability of the process. Process stability refers to the process plan to meet the stability of the production qualified products; production stability means that the production process has the stability of production capacity.
      Because of domestic mold manufacturing enterprises are mostly small and medium enterprises, but also a considerable part of the enterprise, still stay in the traditional workshop style production management stage, often overlooked the mold's stability, resulting in mold development cycle long, manufacturing costs higher, seriously restricting the development of the enterprise.
      First let us take a look at the main factors affecting the stability of the mold and stamping die, respectively, the use of mold material, mold structure of the strength requirements; stability of the material properties of the material, the change range of the material, the change of the material, the size of the tensile strength, the change range of the pressure, the choice of lubricant.
      Factors affecting the stability of the composite
      It is worth noting that, in the process of stamping, because each kind of stamping material has its own chemical composition, mechanical properties and performance closely related to the characteristics, the performance of the material is not stable, the fluctuation of the material thickness, as well as the change of the material.
      Taking the tensile bar as an example, it occupies a very important position in the forming process. In the drawing process, the forming process of the product should have a certain size, and the tension of the appropriate distribution along the fixed periphery. This kind of pulling force comes from the force of the press device, the deformation resistance of the edge part of the material, and the flow resistance on the surface of the pressure. The flow resistance, if only rely on the role of the pressure, the friction between the mold and the material is not enough.
      Therefore, it is also required to set up a tensile bar which can produce a great resistance to the pressure, so as to increase the resistance of the material, so that the material has a large plastic deformation, in order to meet the material plastic deformation and plastic flow requirements. At the same time, by changing the size and distribution of the tensile strength, and controlling the speed and feed rate of the material flow in the mold, the tensile force and its distribution in the deformed region can effectively adjust. By the visible, in the development of stamping process and die design process, must consider the size of the tensile resistance, according to the change of the pressure boundary force to decorate the tensile and determine the form of the stretch, so that the deformation area according to the needs of the deformation and deformation degree of completion of forming.
      If you make a summary, in order to solve the problem of mold stability, the need to strictly control the following aspects:
      In order to develop a stable manufacturing process, the product can be analyzed and the defects of the product can be produced in the process;
      To implement the standardization of production process and the standardization of production process;
      Establish the database, and continue to summarize its optimization; with the help of CAE analysis software system, come to the optimal solution.