1. Planning in the design stage
In the design stage of Sheet Metal Processing Parts, the foundation is laid to ensure dimensional accuracy. Designers accurately plan the dimensions and tolerances of each part according to the final use and assembly requirements of the processed parts. Design is done using advanced CAD (computer-aided design) software that can accurately calculate and simulate the unfolded dimensions, bending angles and other parameters of sheet metal parts. For example, when designing sheet metal parts with complex bending structures, the software can consider factors such as material thickness and bending radius to accurately calculate the unfolded length of each bending part, thereby providing an accurate dimensional basis for subsequent blanking. At the same time, the feasibility of the processing technology will also be considered during the design process to avoid designing structures that are difficult to process or prone to dimensional deviations.
2. Accurate operation of the blanking process
Blanking is the first step in sheet metal processing, and its accuracy directly affects the dimensional accuracy of subsequent processes and final processed parts. If laser cutting technology is used, the energy and focus position of the laser beam need to be precisely controlled. The laser cutting equipment is equipped with a high-precision motion control system that can cut according to the designed cutting path with a cutting accuracy of ±0.1mm. For shearing machine cutting, it is necessary to ensure that the shearing machine's tool is sharp and the gap is appropriate. The pressure and shearing angle of the shearing machine should be adjusted according to the material thickness to ensure the accuracy of the cutting size. At the same time, the material should be accurately measured before cutting to ensure the flatness of the material and avoid affecting the cutting size due to the deformation of the material itself.
3. Accurate control of the bending process
In the bending process, high-precision bending molds should be used first. The dimensional accuracy of the mold directly affects the size after bending, so the mold should be inspected and maintained regularly to ensure the accuracy of its bending angle and size. During the bending operation, a CNC bending machine is used. By inputting precise bending angle, bending length and other parameters, the CNC system controls the movement of the bending machine. The operator should operate strictly in accordance with the operating procedures. During the bending process, pay attention to the starting and ending positions of the bending to ensure that the accuracy of the bending angle is within ±0.5°. At the same time, for sheet metal parts with multiple bending processes, it is necessary to ensure that the dimensional association between each bending process is accurate to avoid cumulative errors.
4. Checking the assembly and testing links
During the assembly process of Sheet Metal Processing Parts, strict assembly processes must be followed. Use appropriate assembly tools and fixtures to ensure accurate positioning of each component during the assembly process. For example, for sheet metal parts that need to be spliced, use locating pins or locating holes for precise positioning to ensure the dimensional accuracy of the splicing. After assembly, a comprehensive dimensional inspection is required. Use high-precision measuring equipment such as a three-coordinate measuring machine to measure the key dimensions of the workpiece, compare the measurement results with the design dimensions, and adjust or rework the dimensions that exceed the tolerance range. Through strict testing links, ensure that the final Sheet Metal Processing Parts meet the dimensional accuracy requirements.
