2 Inverse Function Calculation Set the cam contour curve equation as h =, generation, = edge.
Among them, 7 is the cycle, the inverse function for the household 9 because the stepper motor is a pulse motor, each walk takes a pulse equivalent, so the discrete curve equation is ti = 9 1.2.3, 2hm.lxVz that stepper motor If the pulse equivalent is 123, it can be divided, and the time interval of each stepping motor can be obtained. This method has a large amount of computation, and it generally needs to be calculated in advance according to the law of motion and stored in the SCM. Only, the rate of 淙胪 orphan throwing, å», and Cheng, facilitates the change of the cam profile, and becomes a programmable NC cam to improve its adaptability.
4 The composition and application prospect of the virtual cam mechanism 4.1 The form of the adoption of a stepper motor to drive the precision screw form This form of transmission power is small, high precision, suitable for small work, 1 ferry, also taken steps Into the motor, a dynamic rack and pinion drive form. This form can transmit higher power, but it is said that the wheel wears to produce excessive gear clearance. Therefore, it is necessary to design an adjustment device that eliminates gaps, which is suitable for high-power and low-precision applications.
4.2 Application Prospects With the continuous development and improvement of mechanical and mechanical body technology, and the extensive use of programmable controllers, the degree of automation of mechanical equipment will surely become higher and higher, and the movement law and accuracy requirements of followers will also continue to increase. It is increasingly difficult to meet the control requirements of traditional cam mechanisms. Because of the realization of the law using numerical control methods, and can be modified at any time to meet different needs, it has a broad application prospects. For example, the various cam mechanisms in the food packaging machinery, such as the tool feed mechanism in the automatic machine tool, can replace the traditional degree of production efficiency and product quality.
1 Huang Xixi. Mechanical principles. Beijing People's Education Press, 1965 2 Xu Junyi. Microcontroller principle and application. Shanghai Shanghai Science and Technology Publishing 3 Jiang Ming. CNC cam, Journal of Wuxi University of Light Industry, 19944 Lu Junzhi. Cam profile 2, explore. Journal of Zhengzhou Institute of Food Science, 19994 â–¡ Yu Zhigen Lecturer, Zhejiang Food Industry and Trade School.
Fan-type variable pole asynchronous motor, come to Southeast University, launched a multi-phase asynchronous motor for ventilation fan 0. This project is based on the province should be based on the basic terms and the torch juice project introduced, based on the wind turbine type pole-changed motor mechanism analysis based on , Established a pole-changing motor digital model, conducted research on winding optimization design, compiled a full-featured, preliminary data package, parts and database, etc., which can be used for multi-speed motor flow fans and pump loads, with high technical content and low noise. Simple control, easy operation and maintenance, saving raw materials and other features. Compared with single-speed motors, the material-saving 30, 0-into-zero system has reached the domestic leading level and won the provincial science and technology achievement 3rd prize.
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