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弯曲是冷冲压的主要工艺工序之一。弯曲力和功的确定是编制弯曲工艺卡、设计弯曲模具和选用弯曲工序所需工艺设备的重要依据。弯曲力的理论计算是在假设弯曲时作用于毛坯的各外力之和等于零以及作用在毛坯的外力矩与其内阻抗力矩相等的两个静力平衡条件下求得的。由于在实际生产中,弯曲零件的形状千奇百怪,受力情况十分复杂,对于各种弯曲件所受弯曲力进行详细的分析和精确的计算不仅繁琐、费事,对于现实生产,并无实用价
Bending is one of the main process steps of cold stamping. The determination of bending force and work is an important basis for the preparation of the bending process card, the design of the bending mold and the process equipment required for the bending process. The theoretical calculation of the bending force is obtained by assuming that the sum of the external forces acting on the blank when bending is equal to zero and the two static equilibrium conditions acting on the blank whose external moment is equal to the internal resistance moment. As in actual production, the shape of curved parts of the strange, stress situation is very complicated, bending force for a variety of bending force detailed analysis and accurate calculation is not only complicated and cumbersome, for real production, there is no practical price