Abstract:In the field of mechanical engineering, involute helical gears are widely used. Compared with the involute spur gear, helical gears have a high bearing strength, more smooth transmission, less impact and less noise. The internal gear pairs have the features of large transmission ratio, low vibration, low noise and low wear and hence are widely used in planetary gear transmission systems. In order to meet the requirements of high strength, high speed of the modern gear transmission systems, a new type of asymme… Show more
“…, and v zs (s2) are the components of the relative speed v (s2) at the meshing point in coordinate system S s . Solving formula (21) by discrete numerical method and get the coordinate point (x 2 *,y 2 *,z 2 *), and the minimum inner radius without undercutting can be obtained by the equation (25).…”
Section: Limitation Of Undercutting To Inner Radiusmentioning
confidence: 99%
“…Compared with symmetric involute gears, asymmetric involute gears can enhance the overall bearing capacity of gears and reduce the weight of gears. 25–27 According to the research of the Zhao N, 28 the asymmetric structure is beneficial to reduce contact stress and bending stress during operation of the asymmetric face-gear transmission.Figure 1.Asymmetric offset face-gear transmission model.…”
The paper proposed a new asymmetrical offset face-gear transmission, applied meshing theory to derive the tooth surface mathematical model, and used discrete numerical methods to obtain the tooth model. Subsequently, the limitation of pointing and undercutting on effective tooth width of asymmetric offset face-gear were studied, and the influence of the eccentricity on the effective tooth width was analyzed. Finally, the finite element method was used to analyze the tooth surface contact stress of four groups of asymmetric offset gear pairs with different working pressure angles. The conclusion shows that the tooth surface contact stress takes the minimum value when the working side pressure angle is 30°, and the contact stress significantly reduced compared to the face-gear pair that does not adopt an asymmetric structure. The research provides a reference to the design of asymmetric offset face-gear.
“…, and v zs (s2) are the components of the relative speed v (s2) at the meshing point in coordinate system S s . Solving formula (21) by discrete numerical method and get the coordinate point (x 2 *,y 2 *,z 2 *), and the minimum inner radius without undercutting can be obtained by the equation (25).…”
Section: Limitation Of Undercutting To Inner Radiusmentioning
confidence: 99%
“…Compared with symmetric involute gears, asymmetric involute gears can enhance the overall bearing capacity of gears and reduce the weight of gears. 25–27 According to the research of the Zhao N, 28 the asymmetric structure is beneficial to reduce contact stress and bending stress during operation of the asymmetric face-gear transmission.Figure 1.Asymmetric offset face-gear transmission model.…”
The paper proposed a new asymmetrical offset face-gear transmission, applied meshing theory to derive the tooth surface mathematical model, and used discrete numerical methods to obtain the tooth model. Subsequently, the limitation of pointing and undercutting on effective tooth width of asymmetric offset face-gear were studied, and the influence of the eccentricity on the effective tooth width was analyzed. Finally, the finite element method was used to analyze the tooth surface contact stress of four groups of asymmetric offset gear pairs with different working pressure angles. The conclusion shows that the tooth surface contact stress takes the minimum value when the working side pressure angle is 30°, and the contact stress significantly reduced compared to the face-gear pair that does not adopt an asymmetric structure. The research provides a reference to the design of asymmetric offset face-gear.
“…Összefüggés a szerszám alapprofilja és a homlokmetszet alapprofilja között [2,6] 1. Geometriai tervezés A szakirodalmakban megtalálható tervezési irányokat figyelembe véve [4][5][6][7][8][9][10][11][12][13][14][15] számítógépes programot fejlesztettünk ki a hajtópárok tervezési folyamatainak megkönnyítésére [1,2]. A program kimenő paraméterei a tervezett hajtópár profilgörbéi és a kiszámított geometriai paraméterek.…”
Terveztünk egy hengeres, ferde fogazatú fogaskerékpárt, majd elkészítettük a hajtás CAD modelljét. A modellek felhasználásával kapcsolódási vizsgálatokat végzünk különböző terhelőnyomatékok hatására. Vizsgáljuk az érintkező fogfelületeken és a fogérintkezéskor a fogtövekben kialakuló feszültség, nyúlás és deformáció értékeket.
“…The helical gears are used very frequently in many mechanical constructs [6,8,9,10,11,12,13]. The one of the main applications is on the gear transmissions of vehicles (Figure 1).…”
The
helical gear pairs are widely used in different mechanical constructs. The main
advantage is the good efficiency and the low noise during the connection.We have
worked out a computer software with which the designing process of the helical
gears could be eased. Based on the calculated gear parameters the CAD models of
the elements could be prepared. Knowing of the geometries the assembly could be
created based on the fixed freedom degrees and the elementary centre distance. We have
designed five types of gear pairs. The differences are only the different tooth
traces. All of other parameters have not been modified.
We have
done TCA which is meant we have analyzed the effect of the modified parameter
for the normal stress, normal deformation and the normal elastic strain on the
contact zone. Based on the results we have prepared diagrams for the analysis
of the correlations between the changing parameters.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
