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分析了抛丸器在正常工作中弹丸进入分丸轮窗口的过程，指出弹丸必须达到一定的角速度才有可能进入分丸轮窗口；并推导出弹丸进入分丸轮窗口的临界角速度的数学表达式；提出了分丸轮内的弹丸环模型，从理论上阐明了弹丸环的存在，为进一步提高抛丸器的抛丸量和抛丸率提供了新的依据
The process of projectile entering projectile wheel window during normal operation is analyzed. It is pointed out that the projectile must reach a certain angular velocity before it can enter the projectile wheel window. The mathematical expression of the critical angular velocity of projectile entering the projectile wheel window The projectile ring model in sub-shot wheel was put forward, which proves the existence of projectile ring theoretically, which provides a new basis for further improving shot blasting and shot blasting rate