SQ35系列切丝机砂轮修整装置的改进

Modification of grind wheel dresser in tobacco cutter SQ35 series

为解决SQ35系列切丝机砂轮修整装置中金刚石笔调整时轴向进给误差大、操作步骤繁琐等问题,对砂轮修整装置进行了改进。利用球头柱塞避免金刚石笔在轴向进给时发生周向旋转,并通过在进给螺纹套和金刚石笔上增设弹簧以消除螺纹副间隙,进而减小金刚石笔轴向进给误差;设计旋转支座和可拆卸的定位组件,使更换后的金刚石笔通过简单的定位操作即可恢复初始位置;有限元仿真结果显示改进后装置的强度和共振特性均满足应用要求。以SQ356切梗丝机和SQ351切叶丝机为对象进行测试,结果表明:砂轮修整装置改进后,调整和更换金刚石笔所用平均时间分别减少65.7%和69.4%。该技术可为提高切丝机维护保养效率提供支持。

To achieve easy and accurate adjustment of the diamond stylus in the grind wheel dresser,the grind wheel dresser in the SQ35 tobacco cutter was modified.A ball point set screw is used to prevent the diamond stylus from rotating in the axial direction during axial feed,and springs are added to the feed thread sleeve and the diamond stylus to eliminate the clearance between the thread pair,thereby reducing the axial feed error of the diamond stylus.A rotating support and a detachable positioning component are designed so that the new diamond stylus can be placed to its initial position by a simple positioning operation.Finite element simulation results indicated that the strength and resonance characteristics of the modified device met the application requirements.The modified grind wheel dresser was tested on an SQ356 tobacco stem cutter and an SQ351 tobacco strip cutter.The results showed that after the modification of the grind wheel dresser,the average time for adjusting and replacing the diamond stylus was reduced by 65.7%and 69.4%,respectively.This technology supports the promotion of tobacco cutter maintenance efficiency.