In mechanical system design, there are four-bar mechanism, six-bar mechanism and spatial four-bar mechanism in traditional mechanism theory. Among the six-bar mechanisms, there are Watt kinematic chain and Stephenson kinematic chain. In this respect, our research on machinery is not deep enough, and we need aspiring mechanical professors in colleges and universities to have new research, inventions, new theoretical achievements and new theoretical papers to improve the prestige of China's mechanical research achievements.
Application example of mechanical design of brick tower motion chain
There are also the following institutional types of Watt sports chain evolution: the transformation and change of these different forms of scientific and technological subjects and the embodiment of changing objects.
? Production practice is the garden of theoretical output, and attaching importance to the role of enterprise engineers means attaching importance to the role of theoretical source. One of the core technologies of rocket engine is the application of Raphael tube principle, which can increase the speed of rocket to 7 ~ 8 times of supersonic speed. The inventor of this theory is Swedish enterprise engineer Raphael. In the past, the president of Harbin Institute of Technology and the vice president of Fulaerji Heavy Machinery College of Harbin Institute of Technology first proposed that it was very innovative and effective to attract excellent design engineers and craftsmen with doctoral degrees from No.1 heavy machinery factory at home and abroad to teach and be professors in this college. In essence, this is also a good practice for scientific and technological talents to effectively apply the circular chain and chain system.
In order to innovate production equipment and solve the quality contradiction between production technology and production technology, I have realized a new type of two-degree-of-freedom mechanism with additional constraints in the research of self-pressure shearing mechanism and stepping manipulator structure design.
There is a profound theory behind the special application examples, which lies in the integration of perceptual expectation and objective law of the carrier of science and technology. Initialization of outer about two degrees of freedom kinematic chain. Most people don't feel this way. Only those who love and painstakingly study the mechanism and have innovative practice will have this new cognition. This kind of kinematic chain can be used for floating shears in steel rolling and other aspects. It is a normal embodiment of scientific laws to put forward practical products before theoretical laws, but there are also abnormal situations in which rational cognition and pursuit of laws are put forward before practical products are born. The picture below shows the Cherikov floating shear of the Soviet Union. In essence, it contains the kinematic chain spectrum of a two-degree-of-freedom mechanism with external constraints.
? Two-degree-of-freedom mechanism with external constraints can be used for self-pressure shearing machine, double-acting press mechanism, mechanical program stepping mechanism and so on. It is of practical significance to study the function and function of this chain system seriously. This institutional application was read out at the National Institute of Institutional Invention, and participated in the enlarged board meeting. Some colleges and universities made their own teaching models to promote teaching and learning.
? From particularity to general theory, it embodies the importance of research innovation in colleges and universities; The purpose of our scientific research is to discover the existence of theoretical connotation behind the phenomenon from special cases, and to innovate unprecedented things in the application of universal theory, thus forming our scientific advantages. It is also one of the conventional understandings of our education and scientific research reference.
Some people think that machinery is not a combination of gears, cams and motors. This is a superficial phenomenon. Theoretically, there are still many things we need to study and understand: as far as Watt chain is concerned, its inverted mechanism can evolve into mechanical leg mechanism, steam engine mechanism, engine mechanism, engine room window opening and closing mechanism and so on of various walking robots.
Stephenson kinematic chain can be evolved into angle trisection mechanism, diaphragm pump connecting rod secondary stop mechanism, hatch window opening and closing mechanism, and its reverse mechanism can be used for walking mechanism of walking robot. It is not difficult to understand that the contribution rate of science and technology lies in the ability of science and technology carrier and the advantages of theoretical understanding and application.
The perceptual knowledge of mechanical design is on the one hand, and so is the flexibility and conceiving of theoretical understanding and application. There are many design theories in mechanical design, but now only a few problems about the application of kinematic chain are discussed. I hope that relevant parties can pay full attention to mechanical design, manufacturing and automation, so that the theory and practice of mechanical design, manufacturing and automation can play a greater role and form advantages in China!