How to ensure the high precision of automobile stamping die processing?

To ensure the high precision of automobile stamping die processing, we need to start from many aspects, including design, processing equipment, processing technology, measurement and testing, and personnel skills. The following are specific measures:

optomize design

Accurate product modeling: using advanced CAD/CAM software, according to the design requirements of automobile parts, accurately establish a three-dimensional model, fully consider the details such as mold structure and demoulding mode, and provide an accurate digital model for subsequent processing.

Design verification and optimization: simulate the stamping process by CAE analysis software, predict possible problems, such as stress concentration and deformation, and optimize the die design to reduce design errors.

Select high-precision processing equipment

Advanced machining machine tools: adopt high-precision CNC machining centers, such as five-axis linkage machining centers, which have high positioning accuracy and repeated positioning accuracy, can realize high-precision machining of complex surfaces, and can effectively ensure the dimensional accuracy and shape and position tolerance of molds.

Equipment maintenance and calibration: regularly maintain and calibrate the processing equipment to ensure that the equipment is in the best running state. For example, regularly check the wear of key parts such as guide rails and lead screws of machine tools, and replace the worn parts in time to maintain the machining accuracy of equipment.

Adopt reasonable processing technology

Separation of rough machining and fine machining: First, rough machining is carried out to remove most of the allowance, so that the die is close to the final shape, and then fine machining is carried out, so as to reduce machining stress and deformation and improve machining accuracy.

Tool selection and optimization: according to the requirements of mold materials and processing technology, choose appropriate tools, such as cemented carbide tools and diamond tools. At the same time, the cutting parameters of the tool, such as cutting speed, feed and cutting depth, are optimized to improve the quality and accuracy of the machined surface.

On-line measurement and compensation: In the process of machining, the on-line measurement system is used to measure the mold in real time, and the machining error is found in time, and the tool path is compensated by the numerical control system to ensure the machining accuracy.

Strict measurement and detection

Precision measuring instruments: equipped with high-precision measuring instruments, such as three-coordinate measuring instrument and laser tracker, to accurately measure the key dimensions and shape and position tolerances of the mold to ensure that the mold meets the design requirements.

Testing process and standard: Establish strict testing process and quality standard, and conduct testing at all stages of mold processing, including raw material testing, semi-finished product testing and finished product testing, so as to find and correct errors in time.

Improve the skills and quality of personnel

Professional training and assessment: provide professional training for processing personnel, so that they can master advanced processing technology and process knowledge, be familiar with the operation methods of high-precision processing equipment, and pass strict assessment to ensure that they have the corresponding skill level.

Cultivation of quality consciousness: strengthen the quality consciousness education of personnel, make them realize the importance of high-precision machining, strictly abide by process regulations and quality standards in their work, and ensure that every processing link can meet the requirements of high precision.