18. The paper prov rides a practical method of measuring and assessing the symmetrical error of the keyway in production and data processing formula.
本文提供了生产中实用的键槽对称度误差检测方法和数据处理公式。
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19. When the keyway covering member is in the covering orientation, a covering portion of the keyway covering member aligns with the keyway to cover the keyway.
当该钥孔覆盖部件位于该覆盖方位中时，该钥孔覆盖部件的覆盖部分与该钥孔相对准以覆盖该钥孔。
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20. The more and concentrate stress in the keyway are produced, however, this condition does not occur in the straight seam way. Both of them meet the stress requirements.
带键槽底板块在键槽处产生较大应力集中，而直缝情况则没有产生较大应力集中，两者均满足应力要求。
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21. The new method for machining keyway in holes and the special tool is presented, with which the keyway not only in blind holes but also in shoulder holes can be machined.
22. The rudder device keyway to hole keyway , Hole of the conical hole, Not run through the holes, Moreover structure of two key connection , Large size , High precision machining.
舵装置的键槽是内孔键槽，孔为锥孔、盲孔，而且采用双键联接结构，尺寸大，加工精度较高。
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23. The unique locking bar system prevents the key on the output shaft from tipping in the keyway, eliminating the possibility for key and keyway damage that results in a loss of productivity.
24. The unique locking bar system prevents the key on the output shaft from tipping in the keyway, eliminating the possibility for key and keyway damage that results in a loss of productivity.
