【摘要】 组合式液压机机架用张拉法装配时，立柱首先被拉伸变形，致使立柱的螺纹螺距增大一微量，给装配工艺带来困难。为了解决这一问题，本文就其产生原因，定量地提出螺纹的修正量。更多还原

【Abstract】 Abstract When assembly segment frames of hydraulic press with stretching method, the column would be deformed during tension period. That would causes pitch of the thread increase one microscale, and lead to difficult assembly for the frame.In order to solve this problem,the paper present a method that can amend the thread quantitatively.更多还原