平面缺口型柔性铰链在工业平缝机中的应用研究

A study on the applications of a plane-notch flexure hinge on industrial sewing machines

工业平缝机高速运行时,机构铰链间隙产生的振动、噪声、磨损等问题严重影响整机的缝纫性能,论文研究了应用含柔性铰链送布机构改善平缝机性能的可行性。对平面缺口型柔性铰链特点分析基础上,仿真分析了含平面缺口型柔性铰链和传统刚性铰链的GC6720型高速工业平缝机送布机构的送布牙轨迹、支座反力等参数变化规律;设计一种平面缺口型柔性铰链,完成了含该柔性铰链与传统刚性铰链的平缝机性能对比实验;仿真与实验结果表明,采用柔性铰链可使工业平缝机的缝纫性能得到一定程度的提高。

The sewing performances of an industrial sewing machine under high speed working condition were impacted severely by vibration, noise and wear because of joint clearance. A plane-notch flexure hinge replacing a traditional rigid joint was studied to improve sewing performances of a machine. Forms and characteristics of those existing flexure hinges were analyzed. Those parameters, such as the trajectory of feeding teeth and reaction forces at different supporting points of GC6720 type high speed industrial sewing machine, were simulated considering a plane-notch flexure hinge and a traditional rigid joint respectively. A plane-notch flexure hinge was designed and fixed with the feeding mechanism. The testing experiments of the sewing machine including a plane-notch flexure hinge and a rigid joint respectively were performed. A conclusion could be drawn that a flexure hinge can improve sewing performances of an industrial sewing machine.