fixed Issue 109:  	 circle gripper only works in X direction
fixed Issue 109:  	 circle gripper only works in X direction
haiqiangwang/heekscad,Funcan/heekscad,Funcan/heekscad,satovey/heekscad,Funcan/heekscad,Funcan/heekscad,haiqiangwang/heekscad,haiqiangwang/heekscad,satovey/heekscad,haiqiangwang/heekscad,satovey/heekscad,satovey/heekscad