• 2023-10-16
• 757
• 5 Comments

Stamping process and die design precautions

1. Carry out stamping SE when receiving the product modulus, combine the database, CAE analysis results and review form content, apply FEMA technology for analysis, and communicate with the product design department in the form of ECR report to optimize the product processability to the maximum extent, and consider the quality assurance of parts when designing the process scheme.

2. CAE Actuarial calculation. The CAE parameter setting specification and evaluation standard of the inner and outer plates and typical parts are established, and the compensation scheme library of the digital and analog reconstruction of typical parts is established. For example, the requirements of CAE safety margin, the selection of materials, the requirements of various material thinning rate, material slip requirements and the requirements of the whole process analysis of the parts pass rate, etc., can meet the requirements. The shrink line is carved on the mold, the mesh is set on the blank, and the CAE is compared with the debugging during the part debugging, and the results are included in the data.

3. In the design process, the confirmation of machining die surface data and product data is added, and the external plate parts are evaluated during CAE analysis, and the die surface compensation is added to the depression, reducing the large number of research and fitting hours of fitters.

4. Establish mold clearance design standards. When designing the drawing die surface, consider using the concave of the stamping machine (detecting and debugging the concave of the punching machine, the user's machine table and the slider, establishing the database), and compensate the die surface according to the size and type of the part; Drawing die surface design for expansion treatment; The pressure of the management surface of the drawing bar and the clearance treatment of the air opening surface; Consider the functional surface of parts and solve the problem of rebound pressure and gap treatment in the open zone; Considering the gap compensation of die surface with thinning material; The design of the die surface of the following sequence, the pressure zone of the presser and the negative gap of the shaping block; Compensation for die gap where the material becomes thinner.

5. The process design pays attention to the problem of edge burr, gives priority to sequential edge trimming under permitted conditions, and improves the accuracy of CAE analysis by verifying and summarizing the data of the expansion of the cutting edge line, ensuring the accurate development of the blank and canceling the verification content of the cutting edge line.

6. When establishing standard die surface design, clean the root of non-important rounded corners.

7. Timely and accurate transmission of design information is an important part of reducing repetition, in order to ensure the smooth flow of information, the establishment of specifications and information sheets, such as the issuance of data transfer sheets, research and matching color cards, hardening area indication charts of refinishing molds, etc., specifications and information sheets are placed in PDM and ERP.