一种基于斜连轧穿孔顶头装卸机构

针对金属斜连轧实验机组的穿孔顶头在结束穿轧后如何安全、高效地进行更换的问题,在不影响管材轧制效率的前提下,设计开发了一套可实现离线拆装顶头的机构以满足顶头的更换需求.在高轧制轴向力和高轧制温度等复杂工况下,对顶头、芯棒螺纹联接体产生较大的螺纹预紧力.根据使用情况将装卸工作分为拧紧过程和松退过程,阐述两种过程的工作特点和...

Assembling and disassembling mechanism on piercing plug based on tandem shew rolling

For the problem of how to safely and efficiently replace the piercing plug of metal tandem shew rolling experimental unit after piercing and rolling, and in the premise of not affecting the efficiency for tube rolling, a set of mechanism that realized the offline disassembly and assembly of the plug was designed and developed to meet the needs of plug replacement. Under complex working conditions such as high rolling axial force and high rolling temperature, a large thread pre-tightening force was generated for the plug and mandrel threaded coupling body. According to the use situation, the assembling and disassembling work was divided into the tightening process and the loosening process, the working characteristics and functions of the two processes were explained, the force model between jaw and plug was established when the plug was clamped by the mechanism jaw, and the clamping force between jaw and plug was calculated in the clamping state. Furthermore, the establishment of the three-dimensional model for the mechanism was completed by the existing process parameters and design requirements, and the movement law of the assembly and disassembly of the plug for this mechanism was analyzed and calculated by software ADAMS, which provided a theoretical basis for the working parameters and structural design parameters required in the mechanism design.