2 The inverse function calculation method sets the cam contour curve equation to h=, generation, = edge.
Among them, 7 is the period, and its inverse function is household 9 because the stepping motor is a pulse motor, and each pulse is equivalent to a pulse equivalent, so the discrete curve equation is ti=9 1.2.3, 2hm.lxVz is the stepper motor. Pulse equivalent, then take 123, can be divided, and find the stepping motor of this stepper motor every time interval can be found. This method has a large amount of computation, and it needs to be calculated in advance according to the motion law and stored in the single-chip microcomputer, if it is to be changed. Simply, the rate of singular throws, smashes, and strokes makes it easy to change the cam profile and become a programmable CNC cam to improve its adaptability.
4 The composition and application prospects of the virtual cam mechanism 4.1 The form of the stepper motor drives the precision screw. This form has a small transmission power and high precision. It is suitable for small work, 1 ferry, and also Into the motor, 1 moving rack and pinion transmission. This form can transmit a large amount of power, but the wheel is easy to wear to produce excessive flank clearance, so it is necessary to design an adjustment device to eliminate the gap, which is suitable for high power and low precision applications.
4.2 Application prospects With the continuous development and improvement of mechanical equipment and the extensive use of programmable controllers, the degree of automation of mechanical equipment is definitely higher and higher, and the movement laws and accuracy requirements of the follower will continue. It is increasingly difficult for traditional cam mechanisms to meet control requirements. Because this method is implemented by numerical control method, and can be modified at any time to adapt to different needs, it has broad application prospects. For example, the tool feeding mechanism in various cam mechanism automatic machine tools in food packaging machinery can replace the traditional degree of production efficiency and product quality.
1 Huang Xiwei. Mechanical principle. Beijing People's Education Publishing House, 1965 2 Xu Junyi. The principle and application of single chip microcomputer. Shanghai Shanghai Science and Technology Publishing 3 Jiang Ming. CNC cam, Journal of Wuxi University of Light Industry, 19944 Lu Junzhi. Cam profile 2, explored. Journal of Zhengzhou Grain College, 19994 â–¡ Yu Zhigen, Zhejiang Food Industry and Trade School Lecturer.
Fan-type variable-pole asynchronous motor, the introduction of the introduction of the multi-phase asynchronous motor for the fan in Southeast University. The project is based on the provincial basic project and the torch juice project, based on the analysis of the mechanism of the fan-type variable pole motor. The digital model of the pole-changing motor was established, and the optimization design of the winding was carried out. The function, complete and data package, parts and database were compiled. It can be used for multi-speed motor flow fan and water pump load, with high technical content and low noise. Control simple operation and maintenance to save raw materials and other characteristics. Compared with the single-speed motor, the material saving 30, 0 into 0 system has reached the domestic leading level, and won the provincial science and technology achievements 3rd prize.
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