Improve the manufacturing efficiency of high-end automobile precision molds and ensure the quality of automobile parts;
First, the standardization of automobile mold design
Among many automobile precision molds, considering a series of problems that may occur in the design process of automobile precision molds, such as service life, occasions and process methods, the mold pattern design is carried out from the source, and it develops towards standardization and process standardization.
Second, the optimization and formulation of manufacturing process
When the task of automobile mold pattern design is completed, the next step is how to formulate the mold manufacturing process. The general mold manufacturing process is: blanking → rough machining → heat treatment → flat grinding → precision work → fitter, etc. There will be some technical problems in the process, because the mold is very different from the general parts manufacturing, so when compiling the process, we should not only consider the rigidity, accuracy and process stroke of the machine tool, but also consider the consistency of the previous and subsequent processes and whether the allowance is reasonable. At the same time, pay attention to the key details of the process when compiling the process, unify the design benchmark, cutting benchmark, programming benchmark, measurement benchmark and mold assembly benchmark, and reduce the accumulated error.
Third, the selection and matching of cutting machine tools
When cutting high-end precision molds, the matching technology of machine tools is particularly important. When using simple and economical CNC machine tools to cut the curved surface and excircle of precision automobile die, there will always be very obvious tool contact marks. Usually, the accuracy of machine tools can't meet the precision and size requirements required by drawings. Therefore, when cutting precision dies, we must pay special attention to the important parameters, performance, function and accuracy of the machine tool, which is more conducive to improving the technological efficiency of the dies.
Four, machine tool selection and matching
When cutting precision automobile dies, the choice of tools is very important. When cutting die parts, we should consider what the tool material is, and select reasonable cutting parameters based on the information of the tool holder and supporting blades provided by the tool manufacturer. Commonly used nonmetallic materials, such as carbon steel, titanium alloy, aluminum, composite materials, etc. When roughing the die, the efficiency should be improved, and it should be suitable for back cutting, AG feed speed and medium rotation speed; When precision cutting automobile dies, the principles are high rotating speed, silver feed and low tool consumption. These specific important parameters can refer to the recommended parameters provided by tool enterprises.
Verb (abbreviation for verb) Use and matching of programming equipment
With the rapid development of CNC machine tools and the improvement of programming intelligence, complex parts or high-end precision molds put forward higher requirements for CNC machine tools and programming tools. Manual programming changes with automatic programming, and software programming can accurately draw complex parts or molds while avoiding error rates. Nowadays, many automobile manufacturing enterprises are widely using special programming tools suitable for them. When cutting complex parts or dies, it is more beneficial to improve cutting efficiency as long as you choose appropriate programming tools that you are proficient in.
VI. Performance and Selection of Cutting Oil
Cutting oil is a lubricating medium that must be used in metal cutting technology. High-precision die-cutting technology requires higher cooling, lubrication, penetration and cleaning performance of cutting oil. When waste engine oil and vegetable oil are used instead of special cutting oil, burr, scratch, damage, deformation and other bad conditions are easy to occur, and the tool life will be greatly reduced. High-end cutting oil adopts non-corrosive sulfurized extreme pressure anti-wear additive as the main agent, and the oil film has strong adhesion. Tough oil film can effectively protect the tool and improve the surface quality of the die, and at the same time, it can avoid problems such as rust and blackening of the workpiece and skin allergy of workers.