非对称结构形式的不完全齿轮机构设计
发布时间：2018-08-30 12:54
【摘要】：不完全齿轮常采用停止位时从动轮齿形对称分布,同时降低主动轮首末齿齿高的方法进行设计。为避免重合度小于1,这种方法需要的主从动齿轮全齿数较多。提出了停止位时从动轮齿形非对称布置的设计方法,推导了设计计算公式,画出了首对齿与第二对齿的重合度分布图、始啮和脱啮位置的角加速度图。通过分析表明,选择标准齿高两齿轮齿顶的啮出区交点作脱齿定位点,可保证啮入和啮出刚性冲击较小,并使机构完全避免产生二次冲击。锁止弧位置灵活,使从动轮锁止弧弧长不再受限于首末齿驱动转过的齿数K值,可用作主从动轮的全齿数可以比较少,结构更加紧凑;主动轮末齿齿顶高不必降低,从动轮可采用全齿轮。
[Abstract]:Incomplete gears are usually designed by symmetrical distribution from the tooth profile of the drive wheel when stopping, and by reducing the height of the front and end teeth of the active gear at the same time. In order to avoid the coincidence degree less than 1, this method needs more total teeth of the main follower gear. In this paper, the design method of asymmetrical arrangement of the tooth form of the motor wheel when stopping position is put forward, the design calculation formula is derived, the distribution diagram of the coincidence between the first pair of teeth and the second pair of teeth, and the angular acceleration diagram of the position of the first pair of teeth and the second pair of teeth are drawn. It is shown by analysis that selecting the intersection point of the gnawing area of the top of two gear teeth with standard tooth height as the position point can ensure that the rigid impact in and out of the gear can be reduced and the secondary impact can be avoided completely by the mechanism. Because of the flexible position of the locking arc, the length of the locking arc is no longer limited by the number of teeth K of the first and last teeth driven by the first and last teeth, so that the total number of teeth of the main and slave driving wheels can be less, and the structure is more compact, and the top height of the final teeth of the active gear does not need to be reduced. Full gear can be used from the drive wheel.
【作者单位】： 集美大学机械与能源工程学院;福建省永安市林业局;
【基金】：国家自然科学基金资助项目(51575233) 福建省自然科学基金资助项目(2012J01225)
【分类号】：TH132.41
本文编号：2213130
[Abstract]:Incomplete gears are usually designed by symmetrical distribution from the tooth profile of the drive wheel when stopping, and by reducing the height of the front and end teeth of the active gear at the same time. In order to avoid the coincidence degree less than 1, this method needs more total teeth of the main follower gear. In this paper, the design method of asymmetrical arrangement of the tooth form of the motor wheel when stopping position is put forward, the design calculation formula is derived, the distribution diagram of the coincidence between the first pair of teeth and the second pair of teeth, and the angular acceleration diagram of the position of the first pair of teeth and the second pair of teeth are drawn. It is shown by analysis that selecting the intersection point of the gnawing area of the top of two gear teeth with standard tooth height as the position point can ensure that the rigid impact in and out of the gear can be reduced and the secondary impact can be avoided completely by the mechanism. Because of the flexible position of the locking arc, the length of the locking arc is no longer limited by the number of teeth K of the first and last teeth driven by the first and last teeth, so that the total number of teeth of the main and slave driving wheels can be less, and the structure is more compact, and the top height of the final teeth of the active gear does not need to be reduced. Full gear can be used from the drive wheel.
【作者单位】： 集美大学机械与能源工程学院;福建省永安市林业局;
【基金】：国家自然科学基金资助项目(51575233) 福建省自然科学基金资助项目(2012J01225)
【分类号】：TH132.41
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