Open-loop control, although the modification cost is low, but many times the modified machine tool processing accuracy is low, lost the meaning of modification; closed-loop control, although the processing accuracy is high, but the modification cost is too high. The semi-closed loop control, the modification cost is not too high, and at the same time can meet the processing requirements of general parts, so the general modified machine tools use semi-closed loop control. The design of the servo drive system adopts the semi-closed loop control mode, and the drive component selects the AC servo motor and is equipped with an appropriate power amplifier device, which constitutes the servo drive system. The load inertia is calculated to achieve the purpose of reducing the load inertia, and the lathe control system uses a speed reduction mechanism in the Z-axis feed mode. However, the stiffness value is too many factors involved, so it is difficult to carry out accurate calculations. The factors involved include the rigidity of the parts such as the support base, the intermediate sleeve and the screw, and the contact stiffness between the parts and the base and the base. Contact stiffness and so on. Therefore, according to the accuracy requirements of the feed system, measures such as changing the support mode and improving the bearing rigidity are adopted in the structure to maximize the rigidity. In the process of transforming the machine tool, it is necessary to carry out the adaptation and economic argumentation. After the argumentation, determine the object and technical requirements of the modification, then formulate technical measures and formulate the modification plan. In short, the numerical control transformation of machine tools is one of the means of numerical control of processing equipment in China (especially in economically underdeveloped areas). In order to maximize the performance of the original machine tools, the design must be from the numerical control system, the main motion system, and the servo. The drive system, mechanical system and other aspects are repeatedly calculated and compared, so that economic requirements can be considered as much as possible while satisfying the processing accuracy. (Finish) A load moment indicator is an instrument used in determining whether a certain load could be carried by the Tower Crane
or not. When the operator runs the tower crane, load moment
indicator could show the comprehensive working condition of the tower
crane, which help him run the tower crane safe and effective.
Models of load moment indicator: RC-A5-I load moment indicator, RC-A5-I Tower Crane Load Moment Indicator, Load Moment Indicator CXT30.
When more than one set of tower crane work at the same time, Tower Crane Anti-collision Safety System will be required. A multi-function Safety System for Tower Crane integrated load moment indicator with anti-collision & zone protection system and remote online monitoring system. It indicates real time working states of tower crane and tower crane group both in operator cabin and online. In the meantime it combines functions including black box, anti-collision & zone protection.The system is applicable to various types of level-jib and luffing tower cranes. It adopted the most advanced ARM embedded intelligent microprocessor technology, high precision digital azimuth sensor, weighing sensor, angle sensor.which greatly enhanced data processing capability with higher precision and higher stability.
Tower Crane Load Indicator,Zone Protection System,Tower Crane Anti-Collision Safety System,Anti-Collision System,Crane Monitor System SHEN YANG BAOQUAN BUSINESS CO., LTD , https://www.sytoplesstowercrane.com
The main motion shifting is to reduce the conversion cost. The main motion shifting system generally keeps the original machine tool system basically unchanged. For example, when the lathe is modified, the spindle position encoder is installed at the corresponding position of the main shaft to turn the thread.