这种剪切机的一个主要特点是能够进行快速换刀。更换刀片时，与快速更换轧钢机轧辊相类似，能将上下刀台从剪切机机架中抽出，而将另一组上下刀台送入剪切机机架，大大缩短更换刀片的时间。为了适应快速换刀的要求，下刀台安放在几家下部，与机架接触处设有滑板，而下刀台通过夹紧油缸固定在机架上。

      上刀台有两部分组成：上刀台本体及上刀台连杆垫块。在换刀片时，只将上刀台本体和下刀台一起抽出。上刀台由压紧油缸固定在机架上。由于上下刀台都由压紧缸固定，这就便于装卸。此剪切机的另一个主要特点是设置了上刀台行程扩大装置，以便能够让不需要剪切的大断面轧件通过剪切机，上刀台最大升高位置，可上升到轧制线以上640mm的位置。上刀台行程扩大装置是由一套连杆机构，以及油缸等组成。如需要扩大上刀台行程时，拔掉安全销，将上刀台压紧油缸松开，上刀台在其平衡油缸作用下，下降落在下刀台上。此时，上刀台行程扩大装置的油缸动作，连杆机构的端部插入能转动曲柄的凹槽中，使曲柄转动一个角度。这样，曲柄连杆摆动起到一定位置。然后，上刀台平衡油缸再次动作，使上刀台上升到离轧制线上640mm的位置。为了保证连杆机构在转动曲柄连杆时，其端部不脱出转动曲柄的凹槽，设置了一个平衡重机构。

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One of the main characteristics of the shear machine is capable of rapid change. When replacement blades, with fast change is similar to rolling mill roll, can be pumped up and down the knife from the shear machine frame, and another set of top and bottom knife into shearing machine rack, shorten the time of replacement blades. In order to adapt to the requirement of rapid change, the knife taian on several bottom, contact with the rack is equipped with a skateboard, and under the knife sets through the clamping oil cylinder is fixed on the rack.
Knife knife machine has two parts: on ontology and knife on the connecting rod block. When in the blade, only will be under the knife on the ontology and knife set out together. Knife on the table by the pressure oil cylinder is fixed on the rack. Due to the top and bottom knife sets are made by pressure cylinder is fixed, it is convenient for loading and unloading. Another key feature of the shearing machine is set up on the knife stroke expanding device, so that you can let don't need to cut the big cross section of rolling piece by cutting machine, knife sets the biggest rises on location, can rise to the position of the rolling line more than 640 mm. Knife on Taiwan to expand device consists of a set of connecting rod mechanism, and the oil cylinder, etc. Such as the need to expand on the knife sets the trip, remove the safety pin, will the knife pressure oil cylinder to loosen, the knife on the table under the effect of the balance cylinder, the drop falls on the first cut. At this point, the knife on Taiwan to expand device of the oil cylinder action, can crank linkage end into the groove, a crank Angle. In this way, the crank connecting rod swing play a position. Then, knife sets balance oil cylinder action again, make the knife set to rise to the position of the rolling line is 640 mm. In order to ensure the linkage in the crank connecting rod, its not emerge the crank groove, set up a balance weight.