美国国家标准与技术研究所(NIST)的研究人员利用以计算机为基础的自动温度补偿软件,可大大提高美国汽车厂的活塞车床的加工精度。NIST的这一系统曾在Giddings＆Lewis机床厂、通用汽车公司、Ford汽车公司及国家制造科学中心等进行试验。 在试验中,研究人员用铝坯进行多次6小时以上的活塞加工试验,改变某些环境方面的或操作工人的条件以模拟实际的生产条件。他们与没有补偿措施的Giddings＆Lewis车床相比较,未加补偿的车床加工活塞的尺寸变化小于头发直径的一半,而采用软件的车床能补偿由于温度变化和其他误差引起的活塞尺寸变化的80％,即其尺寸变化大大小于头发直径的十分之一,达到 Researchers at the National Institute of Standards and Technology (NIST) use computer-based automatic temperature compensation software to dramatically increase the machining accuracy of piston lathes in US automotive plants. The NIST system was tested at Giddings & Lewis Machine Tool Works, General Motors, Ford Motor Company and National Manufacturing Science Center. In the experiment, the researchers used aluminum billet to conduct multiple piston machining tests for more than 6 hours to change the conditions of some environmental or operating workers to simulate the actual production conditions. They compare with the Giddings & Lewis lathe without compensation, the size of the uncompensated lathe piston is less than half the size of the hair, and the software lathe compensates for 80% of the piston size change due to temperature changes and other errors, namely The size change is much smaller than one tenth of the hair diameter to reach