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利用Deform-3D软件对结合齿的冷锻成形过程进行了模拟,应用正交模拟试验以及工程试验相结合的方法,对某汽车变速箱结合齿冷锻工艺及参数优化进行研究,对预成形制件主要几何参数进行优化。研究结果表明:采用制定的冷锻预成形加精整倒锥工艺是可行的;凸台直径是影响成形力大小的最主要因素,其次是圆角半径,而齿形长度、内孔直径及凸台长度对成形力的影响较小;优化结果是当齿形长度A=6.5mm、内孔直径B=45mm、凸台直径C=62mm、凸台长度D=11mm、圆角半径E=2mm时,成形载荷最小。以优化结果为依据,成功实现了该类零件的冷锻成形。
Deform-3D software was used to simulate the cold forging process of the combined teeth. By using the method of orthogonal simulation and engineering test, the technology and parameter optimization of a gearbox combined with tooth for a car were studied. The main geometric parameters are optimized. The results show that it is feasible to adopt the cold forging preforming and finishing reverse taper process. The diameter of the boss is the most important factor affecting the forming force, followed by the fillet radius. The length of the toothed profile, the diameter of the bore and the convexity The length of the table has little influence on the forming force. The optimized result is that when the length of the tooth is A = 6.5mm, the diameter of the bore is B = 45mm, the diameter of the boss is C = 62mm, the length of the boss is D = 11mm and the radius of the fillet E is 2mm , Forming the smallest load. Based on the optimization results, cold forging of such parts has been successfully achieved.