自动化生产线安装与调试-双语版章节测试课后答案2024秋

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第十一章单元测试

The function of the assembly unit is to complete the assembly process of inserting the black or white small cylindrical core parts in the unit bin into the workpiece to be assembled placed in the assembly hopper.（）

答案:对

The main control process of assembly unit includes two independent sub processes, of which one is cutting process, and the other is assembly process. The blanking process realizes the process that the small cylindrical core is discharged from the silo to the material tray of the rotary table, and then the rotary table rotates to transfer the core part to the lower part of the assembly manipulator gripper; the assembly process realizes the process of grasping the core under the gripper of the assembly manipulator and sending it to the assembly table to complete the process of inserting the core into the workpiece to be assembled.（）

Both subprocesses are step sequence programs. Their initial steps should be set when PLC is powered on (M8002 ON, or SM0.1 ON). The independence of the two subprocesses is reflected in that each subprocess will transfer to the next step and start the step process of the sequence after its starting conditions are satisfied; after the process is finished, it is not necessary to wait for the end of the other sub process to return to the initial step; if the start conditions are still met, the next work cycle will start.（）

The two sub processes constitute the whole working process of the assembly unit. If the stop command is issued during the operation of the system, the system can stop only after the two sub processes return to their initial steps. Therefore, the initial step of each subprocess must contain the information of stop instruction, so that the subprocess that first returns to the initial step cannot meet the step transition condition and stops at the initial step.（）