| Along with the increasing demands on the high speed and high precision of theautomated machinery, traditional intermittent mechanisms can no longer meet theneeds. According to these, a new type of one-dwell coaxial indexing cam mechanismis studied. After analyzing the structure and working principle systematically, thepaper provide the method of kinematic design, and also use the simulation technologyto verify the feasibility of this mechanism. Compared to the conventional indexingcam mechanisms, this one has a more compact structure due to its coaxialarrangement which is more suitable for higher speed conditions. The main contentsare as follows:1) A new type of one-dwell coaxial indexing cam mechanism is studied. On the basisof in-depth investigation into the structure and transmission principle, theequations of cam profiles, pressure angle and the curvature’s radius are deduced tolay the foundation for kinematic analysis and design.2) Based on the geometric constraint equations, the effects of dimensionalparameters on the geometry characteristics of the system are analyzed, which leadto a general approach for dimensional design. Use an example to verify themethod’s feasibility.3) Due to the kinematic model and rigid body dynamic model, the variations of theforces during the dividing period are carried out, which provide the technicalsupport for strength analysis and design.4) The solid model of the novel one-dwell coaxial indexing cam mechanism isestablished. The ADAMS software is applied to do the simulation on mechanismkinematics and the rigid body dynamics. Use the results to testify the correctnessof theoretical model. |
