Abstract
Spatial mechanisms of various types are widely used in technology. Most of them have one or two ball pairs, the presence of which reduces the service life of the device (ball pairs are difficult to protect from dust and dirt. They are more difficult to manufacture and have a lower loadbearing capacity than rotational pairs). Replacing ball pairs with rotary ones, designed, for example, with standard bearings, will greatly simplify and reduce the cost of their manufacturing technology, increase the service life and expand the area of practical application. The difficulty and complexity of creating fivelink and six-link mechanisms and devices with a special structure lies in the fact that the usual combination of links fails to achieve their operability (with rotatable links). Theoretically, this mechanism has been studied by many foreign and Russian scientists. However, Kazan scientists were the first to form and put into practice spatial mechanisms with rotational pairs. The paper presents synthesis and analysis of the spatial five-link mechanism by the degree of irregularity, axial displacement, elliptical law and by the reproduction of a linear function. The mechanism provides intensification and energy saving of mixing, separation, torque transmission of various drives.
Highlights
Spatial mechanisms with a special structure have interesting and useful properties for practice
This paper considers the synthesis of one of the spatial five-link mechanisms obtained by combining two Bennett mechanisms
Discarding the combined cranks and one of the common hinges, we get a fivelink mechanism, in which the angle of the crank axes and the shortest distance are the same as those of the combined mechanisms, the distance between the axes of the strut hinges is equal to twice the length of the connecting rods of the Bennett mechanism
Summary
Spatial mechanisms with a special structure (with rotary hinges) have interesting and useful properties for practice. A striking example of this is the Bennett mechanism, which has more than seven names of target groups [1,2,3]. This paper considers the synthesis of one of the spatial five-link mechanisms obtained by combining two Bennett mechanisms. When forming a five-link mechanism, two Bennett mechanisms are combined so that the driven cranks with the hinges coincide, and the strut links are located sequentially on one straight line. Discarding the combined cranks and one of the common hinges, we get a fivelink mechanism, in which the angle of the crank axes and the shortest distance are the same as those of the combined mechanisms, the distance between the axes of the strut hinges is equal to twice the length of the connecting rods of the Bennett mechanism
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
