The most conventional vehicle pretensioner system consists of an internal gear pair with involute teeth. However, it has been well known that the corresponding gear pairs are relatively weak under the situation of imp...The most conventional vehicle pretensioner system consists of an internal gear pair with involute teeth. However, it has been well known that the corresponding gear pairs are relatively weak under the situation of impact loadings. To improve this phenomenon, a new pretensioning gear system with cycloid teeth rather than the involute ones was proposed, and dual cycloidal gear mechanisms were designed for satisfying geometric constraints and dynamic loading conditions. The simulations of the prototypes were conducted by LS-DYNA program and the experiments for a prototype were performed for a dynamic model with impact loading devices. The results show that the better operation and the smoother motion are confirmed in the proposed cycloidal gear system rather than the conventional one without interferences between gear teeth under the impact of a crash.展开更多
An error processing method is presented based on optimization theory and microcomputer technique which can be successfully used in the cycloidal gear measurement on three dimensional coordinates measuring machine (CMM...An error processing method is presented based on optimization theory and microcomputer technique which can be successfully used in the cycloidal gear measurement on three dimensional coordinates measuring machine (CMM). In the procedure, the minimum quadratic sum of the normal deviation is used as the object function and the equidistant curve is dealed with instead of the teeth profile. CMM is a high accurate measuring machine which can provide a way to evaluate the accuracy of the cycloidal gear completely.展开更多
This machine tool is produced by theQinchuan Machine Tool Works. It isused mainly for grinding cycloid gearsin the cycloidal speed reducer. The toothflank of the gear is the equi-distance curve ofmetamorphic epicycloi...This machine tool is produced by theQinchuan Machine Tool Works. It isused mainly for grinding cycloid gearsin the cycloidal speed reducer. The toothflank of the gear is the equi-distance curve ofmetamorphic epicycloid. The structural features of the machinetool are: the machine adopts the generatingprinciple for grinding; the table surface isprovided with a V-type circular guideway,so as to guarantee a stable working accuracy;the column unit employs a ballscrew展开更多
基金supported by the Changwon National University in 2011-2012,Korea
文摘The most conventional vehicle pretensioner system consists of an internal gear pair with involute teeth. However, it has been well known that the corresponding gear pairs are relatively weak under the situation of impact loadings. To improve this phenomenon, a new pretensioning gear system with cycloid teeth rather than the involute ones was proposed, and dual cycloidal gear mechanisms were designed for satisfying geometric constraints and dynamic loading conditions. The simulations of the prototypes were conducted by LS-DYNA program and the experiments for a prototype were performed for a dynamic model with impact loading devices. The results show that the better operation and the smoother motion are confirmed in the proposed cycloidal gear system rather than the conventional one without interferences between gear teeth under the impact of a crash.
文摘An error processing method is presented based on optimization theory and microcomputer technique which can be successfully used in the cycloidal gear measurement on three dimensional coordinates measuring machine (CMM). In the procedure, the minimum quadratic sum of the normal deviation is used as the object function and the equidistant curve is dealed with instead of the teeth profile. CMM is a high accurate measuring machine which can provide a way to evaluate the accuracy of the cycloidal gear completely.
文摘This machine tool is produced by theQinchuan Machine Tool Works. It isused mainly for grinding cycloid gearsin the cycloidal speed reducer. The toothflank of the gear is the equi-distance curve ofmetamorphic epicycloid. The structural features of the machinetool are: the machine adopts the generatingprinciple for grinding; the table surface isprovided with a V-type circular guideway,so as to guarantee a stable working accuracy;the column unit employs a ballscrew
