机械及设计制造及其自动化专业科技技能训练--冷剪机及设计.doc

冷剪机设计 于天祁 （河北科技师范学院 机电工程学院） 指导教师：陈秀红、冯利臻 摘　要 冷剪机是在冶金工业中经常用来对轧件进行切头、切尾或者切定尺的机械设备。作为剪切机械中的一种，冷剪机在冶金、航空、国防工业，以及印刷等轻工业均有广泛的应用。早期的冷剪机由于结构比较笨重而且没有快速换刀装置，导致生产效率比较低，产品的质量也不高。为此，我们设计了结构更为紧凑的曲柄连杆上切式斜刃剪切机。该剪切机主要包括剪切部分及传动部分。剪切部分采用上切式斜刃刀片的剪切方式，大大降低了剪切力。传动部分采用电机通过联轴器带动减速器代替原来的带传动，避免了由于弹性滑动带来的功率损失，采用圆盘式摩擦离合器控制减速器与开式齿轮之间的离合，通过曲轴带动连杆的上下运动来完成剪切动作。该机构的特点在于用大齿轮代替飞轮，联轴器传动代替带传动。该剪切机的生产效率比较高且生产成本较低，适用于中小型棒材生产线或是无缝钢管管坯的剪切。 关键词：圆盘式摩擦离合器，曲柄连杆，斜刀刃， 剪切机，联轴器传动 Cold shearing machine designAbstract Cold shear machines are usually used to come to carry on the machine equipments that slices the head, slices the tail and to slice appointed dimension of the piece in the rolling metallurgy industry. The conduct and actions shears to slice the machine in of a kind of, cold shear the machine in the metallurgy, aviation, industry of defenses, and print the etc., the light industry all has the extensive application. Earlier period of cold shear the machine because the structure is more bulky and did not change the knife the device quickly, cause produce the efficiency lower, the quantity of the product is also not high. For this, we designed the structure to even connect the pole for the crank of the tightly packed up the inclined blade of slice type shears to slice the machine. This shear to slice the machine to mainly include to shear to slice the part and spread to move the part. Shear to slice the part adoption up the inclined blade razor blade of slice type shears to slice the way, lowering to shear to slice the dint consumedly. Spread to move the part adoption electrical engineering to arouse to decelerate the machine to replace through the adapter coupling to take to spread to move originally, avoid because of the power loss that the flexibility glide bring, adopt of a dish type friction clutch control deceleration machine and the open type wheel gear to leave to match, arouse to connect the top and bottom of the pole through the song stalk sport to complete to shear to slice t