軋機(jī)前后有對(duì)中導(dǎo)衛(wèi)的升降輥道，可保證軋件正確進(jìn)入軋機(jī)。三架軋機(jī)的輥系和軸承座同步更換，更換平臺(tái)在軋線外側(cè)，換輥時(shí)間長只用20min。傳動(dòng)側(cè)的牌坊，通過液壓方式，由張力螺桿鎖定，操作側(cè)的牌坊為“可拉出”式，軋件導(dǎo)衛(wèi)固定在水平軋機(jī)的軸承座上。據(jù)說在14世紀(jì)歐洲就有軋機(jī)，但有記載的是1480年意大利人達(dá)·芬奇（LeonardodaVinci）設(shè)計(jì)出軋機(jī)的草圖。

A lift roller of the guide in the time before and after the mill, rolling mill can ensure the correct entering. The roll system of three rolling mills is replaced synchronously with the bearing seat, and the replacement platform is on the outside of the rolling line. The longest time for changing the roll is only 20min. The movable side arch is locked by tension screw, and the operation side arch is "pull-out" type, and the rolling guide is fixed on the bearing seat of the horizontal rolling mill.

閉口式機(jī)架為一整體鑄件制成。這種機(jī)架形式在型鋼車間中小型軋機(jī)上應(yīng)用較多。其優(yōu)點(diǎn)是強(qiáng)度和剛度較高，輥跳值較小，產(chǎn)品精度較高。其主要缺點(diǎn)是制造比較困難，裝卸、換輥不方便。軋制壓力較大、對(duì)軋件尺寸要求比較嚴(yán)格時(shí)常采用閉口式機(jī)架?？傊?，它適用于軋制復(fù)雜外形結(jié)構(gòu)，精度要求高，零件品種變換很多的情況。如初軋機(jī)、型鋼連軋機(jī)和型鋼成品軋機(jī)等。

The closed frame is made of a whole castings. This type of frame is used more in the small and medium mill in the steel workshop. Its advantages are that the strength and stiffness are high, the roll jump value is small and the precision of the product is high. Its main disadvantage is that it is difficult to manufacture, and it is inconvenient to load and load and change the roll. When the rolling pressure is larger and the requirements for the size of the rolled piece are strict, the closed frame is often used. Such as the early rolling mill, the type steel continuous rolling mill and the steel finished rolling mill, etc.

楔橫軋技術(shù)是一種低耗的先進(jìn)生產(chǎn)工藝在連桿生產(chǎn)線上采用楔橫軋制坯熱模鍛壓力機(jī)成形工藝生產(chǎn)連桿鍛件具有其它鍛造工藝無法相比的獨(dú)特優(yōu)勢與輥鍛工藝相比材料利用率提高10%以上勞動(dòng)生產(chǎn)率提高30 50%

Cross wedge rolling technology is an advanced production process with high precision, high efficiency, high efficiency and low cumption. On the connecting rod production line, the forming process of the die forging press of the wedge rolling blank is adopted to produce the connecting rod forgings with the unique advantages of other forging processes. Compared with the roll forging process, the utilization ratio of materials is raised by more than 10% of the labor productivity by 3050%.

軋制時(shí)毛坯的位置固定，因此不需設(shè)置側(cè)向支撐毛坯的導(dǎo)向尺。總之，它適用于軋制復(fù)雜外形結(jié)構(gòu)，精度要求高，零件品種變換很多的情況。但其行程大小受到限制，所以，變形程度也受到影響，同時(shí)，板式軋機(jī)有空行程，故影響到生產(chǎn)率和變形程度都不能很大。

The of the blank is fixed during rolling, so there is no need to set the guide bar of the side supporting blank. In short, it is suitable for rolling complex shape structure with high accuracy and many varieties of parts. But the stroke size is limited, so the degree of deformation is also affected. At the same time, the plate mill has an empty travel, so the productivity and deformation can not be very large.