I don't think Vcarve will import a 3D object in any format other than .stl .Come to that,I don't know enough about Vcarve to know if it has a CV setting,I have worked with a couple of controllers that would accept a G96 command to achieve this kind of outcome but they were a bit more sophisticated than an AXYZ contrroller.There may be things you can adjust within the parameters of the controller to improve things.Do you have any idea what the optimal acceleration settings for the machine might be?There may be,indeed should be,a manual for the machine that includes such details and the original settings may have been tweaked by the departed tech to speed up cycle times.It could be useful to compare what the current setting is to the factory figure.