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利用棒材的辐射现象而研制测径仪的试验,未能令人满意,从而研制利用背景照射现象的扫描测径仪。本设计是选用氦-氖激光器和多面体转镜,而转镜是由晶体振荡器驱动同步电机而旋转的。采用数字式计数技术来确定棒材的直径。测量范围在0.2时(5mm)至1.0时(25mm)之间,精度在±0.001时(±0.025mm)以上。 在实验室和现场试验期间,对这一技术又进行了改进,克服了棒材的运动和水汽、灰尘的影响所引起的误差。得到的结果比设计指标还高。根据经验,人们将采用两种型式的仪器:一种是指示用的,每隔0.4至0.8秒时间给出一次数字显示;另一种是控制用的,有快速(0.01秒响应时间)模拟偏差信号输出。 若干年来,人们感到需用某些方法在轧制过程中测量棒材的直径。国内外都做过一些努力,想制造一种适合的仪器。由于棒材轧机的轧制速度高,所以考虑非接触式仪器比较好,从而导致人们采用光学装置。一旦决定用光学方法后,马上面临的第一个问题就是利用棒材的辐射,还是使用某种形式的背景照射方法来进行测量。
The use of bar radiation phenomenon and the development of diameter measuring instrument test, unsatisfactory, thus developing the use of background radiation phenomenon scanning caliper. The design is the choice of helium-neon laser and polygon mirror, and the mirror is driven by a crystal oscillator synchronous motor rotation. Digital counting technology to determine the diameter of the bar. Measurement range of 0.2 (5mm) to 1.0 (25mm) between the accuracy of ± 0.001 (± 0.025mm) above. During the laboratory and field trials, this technique has been improved to overcome the bar movement and water vapor, the impact of dust caused by the error. The result is higher than the design index. As a rule of thumb, two types of instruments will be used: one for indication, one digital display every 0.4 to 0.8 seconds and the other for control purposes with fast (0.01 second response time) analogue deviation Signal output. For years, people felt the need to use some method to measure the diameter of a bar during the rolling process. At home and abroad have done some hard work, want to create a suitable instrument. Due to the high rolling speed of bar mills, it is better to consider non-contact instruments, leading to the adoption of optical devices. Once the optical method has been decided, the first immediate issue is whether to use bar radiation or some form of background irradiation.