本機(jī)床結(jié)構(gòu)式為三輥對(duì)稱式，上輥在兩下輥中央對(duì)稱位置作垂直升降運(yùn)動(dòng)，通過(guò)液壓缸內(nèi)的液壓油作用于活塞而獲得，為液壓傳動(dòng)；兩下輥?zhàn)餍D(zhuǎn)運(yùn)動(dòng)，通過(guò)減速機(jī)的輸出齒輪與下輥齒嚙合，為卷制板材提供扭矩。

The construction of this machine is in the form of three roller symmetry．the top roller，in the central symmetry position over the two bottom rollers，does vertical motion up and down through screw，nut and worm transmission．Decelerator gears bottom rollers providing torsion moment for coiling sheet metal．The construction of the machine is compact and the operation and maintenance is convenient．

兩下輥?zhàn)餍D(zhuǎn)運(yùn)動(dòng)，通過(guò)減速機(jī)的輸出齒輪與下輥齒嚙合，為卷制板材提供扭矩。