一、双滚轮送丝机的原理和结构 1.工作原理双滚轮送丝机是焊丝、电动机轴和送丝装置处于同一轴线上的线性送丝机构的一种,是按照“轴向固定的旋转螺母能轴向推进螺杆”的原理而设计的(图1)。它的工作原理与三滚轮送丝机相同,但两者的根本区别在于双滚轮送丝机的滚轮为双曲面。 First, the principle and structure of double-roller wire feeder 1. Working principle Double-roller wire feeder is a kind of linear wire feeding mechanism with welding wire, motor shaft and wire feeding device on the same axis, which is based on the principle of “axial fixed rotation Nuts can be axially propelled screw ”principle and design (Figure 1). Its working principle is the same as that of the three-roller wire feeder, but the fundamental difference between the two is that the rollers of the double-roller wire feeder are hyperboloid.