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随气动和液压传动在铸造机械领域内应用广泛,研究其程序控制线路编制方法的文献愈来愈多,有些仅介绍具体线路,有些介绍了编制方法。在这些文献的基础上,我们发现使用“破坏二义指令法”,在我们所遇到的许多过程中,可以极其快速地、多方案地、获得比较简单和可靠的结果。现介绍于下: 一、气缸(有时也用于液压缸)按指令动作设气缸A和B(图1):作过程1:A+B+B-A……的周而复始的动作。即静止时A、B分别压通行程阀X1和X3(以后都用字母X表示行程阀)上,接上气源后A前进(A+),
With the pneumatic and hydraulic transmission widely used in the field of foundry machinery, there are more and more literatures about the method of programming control lines of the program. Some of them only introduce the specific circuits and some of them introduce the preparation methods. Based on these references, we find that the use of the Sabotage Instruction Method can, in many of the processes we encounter, obtain relatively simple and reliable results very quickly and with multiple options. Now introduced in the next: First, the cylinder (sometimes also used for hydraulic cylinder) according to the instructions set up the cylinder A and B (Figure 1): for the process 1: A + B + B-A ...... cycle of the action. That is, when stationary A, B, respectively, through the travel of the valve X1 and X3 (after the letter X that stroke valve), connected to the air after A forward (A +),