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大连钢厂φ100自动轧管机组以生产特殊钢管为主。它的φ100穿孔机本应采用可调速的直流电动机拖动,但当年建造时为了节省投资却采用了1000KW 交流电动机。1000KW 交流电动机用于拖动φ100穿孔机不可调速,因此该穿孔机穿制变形抗力大,而加工变形塑性温度范围窄的合金钢时很困难,低塑性难变形的高合金钢管甚至无法生产。后来,该厂采用转子串电阻强迫降速的方法,但这种方法用于生产高合金管浪费电能,而且荒管头部往往穿碎或形成夹层,穿出的荒管内折及外螺旋划伤严重,工具的使用寿命也比较短。为了适应低塑性难变形高合金钢管生产,扩大穿孔范围,该厂经过反复研究,决定采用机械减速装置。机械减速装置的设计运用了变形功与变形速度成比例的关系式进行计算。这个关系式是:
Dalian mill φ100 automatic pipe rolling mill to produce special steel-based. Its φ100 punching machine should be used to adjust the speed of the DC motor drive, but when the construction was used to save money while using a 1000KW AC motor. The 1000KW AC motor is not suitable for driving the φ100 punching machine. Therefore, the punching machine has a large deformation resistance and is difficult to process the alloy steel with a narrow plastic temperature range. The low-alloy steel pipe with high plasticity can not even be produced. Later, the plant used a method of forced rotor speed reduction, but this method was used to produce high-alloy tubes to waste electrical energy, and the head of the shortage tube often broke or formed a sandwich, Serious, tool life is also relatively short. In order to adapt to low plastic deformation of high alloy steel pipe production, to expand the perforation range, the plant after repeated research, decided to adopt a mechanical deceleration device. Mechanical decelerator design using the work of deformation and deformation rate proportional to the relationship between calculation. This relationship is: