How to ensure and improve the accuracy of metal stamping processing?

The main characteristics of precision metal blanking technology are large quantities and high precision. Ensuring and improving processing accuracy is very important in the production of metal stamping parts. Guangdong Precision, a manufacturer of precision metal stamping and metal insert injection molding, can control the precision of the finished product to 0.02mm. We use ASSAB die steel mold materials; mold accessories use outstanding Misumi standard parts in the industry, as well as Master and St. Vange hot runners; at the same time, in order to ensure the accuracy of mold processing, we use Swiss Charmilles. Wire, Makino EDM and other equipment for mold parts processing, and through the German Zeiss three-coordinate, high-precision Rockwell hardness tester and other equipment for mold parts quality inspection. Next, let's take a look at how to ensure and improve the processing accuracy of metal stamping. 1. Reduce the original error, improve the geometric accuracy of the machine tool used for parts processing, improve the accuracy of fixtures, measuring tools and tools themselves, and control the force of the process system, thermal deformation, tool wear, deformation caused by internal stress, measurement errors, etc., all belong to the direct reduction of the original error. In order to improve the machining accuracy, it is necessary to analyze the original errors that produce the machining errors, and take different measures to solve the main original errors that cause the machining errors according to different situations. For the processing of precision parts, the geometric accuracy, rigidity and thermal deformation of the precision machine tools used should be improved as much as possible; for the processing of parts with a shaped surface, it is mainly how to reduce the shape error of the forming tool and the installation error of the tool. This method is a basic method widely used in production. 2. Evenly share the original error. In processing, due to the existence of the blank or the previous process error, the processing error of this process is often caused, or the original error occurs due to the change of the material properties of the workpiece or the process change of the previous process. Variety. To solve this problem, you can use the method of grouping to adjust the average error. 3. Transfer the original error The error transfer method is essentially to transfer the geometric error, force deformation and thermal deformation of the process system. For example, when the accuracy of the machine tool fails to meet the requirements of parts processing, it is often not blindly to improve the accuracy of the machine tool, but to find ways from the technology or fixture to create conditions to transfer the geometric error of the machine tool to the aspect that does not affect the machining accuracy. 4. Compensate the original error The error compensation method is to artificially create a new error to offset the original error in the original process system. 5. Homogenize the original error. For shafts and holes that require high matching accuracy, grinding technology is often used. The grind tool itself does not require high precision, but it can perform micro-cutting on the workpiece during relative movement with the workpiece, and the high points are gradually ground away, so that the workpiece can achieve high precision. The essence is to use closely related surfaces to compare with each other, check each other to find out the difference from the comparison, and then perform mutual correction or mutual reference processing, so that the error of the processed surface of the workpiece is continuously reduced and evened. 6. In-situ machining method In processing and assembly, some accuracy problems involve the mutual relationship between parts or components, which is quite complicated. If you blindly improve the accuracy of parts and components, sometimes it is not only difficult, or even impossible, if you use in-situ The machining method can easily solve the seemingly difficult precision problem. [Related recommendation] Learn more: What are the methods for polishing the surface of stainless steel? Learn more: Manufacturing characteristics of automobile stamping parts molds Learn more: Points to note in the design of continuous stamping dies (2)