6.4 后差速器
(1)后轴差速器参考硬点、结构框。
•单击Build > Hardpoint> New命令,弹出创建硬点对话框参考如图6-3所示;
•Hardpoint Name:rear_diff_ref;
•Type:single;
•Location:2 520,0.0,-200.0;
•单击OK,完成._my_AWD_driveline.ground.hps_rear_diff_ref硬点的创建。
•单击Build > Construction Frame > New命令;
•Construction Frame(结构框名称):rear_diff_ref;
•Location Dependency:Delta location from coordinate;
•Coordinate Reference (参考坐标):hps_rear_diff_ref;
•Location:0,0,0;
•Location in:local;
•Orientation Dependency:User entered values;
•Orient using:Euler Angles;
•Euler Angles:0,90,0;
•单击OK,完成._my_AWD_driveline.ground.cfs_rear_diff_ref结构框的创建。
(2)后轴差速器整体部件。
•单击Driveline Components > Complex Components > Entire Differential Unit命令,参考如图6-5所示;
•Differential Center Reference:Delta location from coordinate;
•Differential Name(变速器名称):rear;
•Side Gear Radius(行星齿轮左右两侧齿轮半径):40;
•Pinion Gear Radius(行星齿轮前后两侧齿轮半径):30;
•Ring Gear Outer Radius(从动齿轮外径):120;
•Ring Gear Inner Radius(从动齿轮内径):60;
•Ring Gear Offset(从动齿轮偏移量):50;
•Ring Gear Geometry(准双曲面齿轮):Hypoid;
•Mass:10;
•Ixx:1E4;
•Iyy:1E4;
•Izz:1E4;
•单击OK,完成后轴差速器整体部件的创建,此时传动轴整体模型如图6-12所示。

图6-12 传动轴模型
(3)主动齿轮几何体。
•单击Build > Construction Frame > New命令;
•Construction Frame(结构框名称):propshaft_to_diffcase_front;
•Location Dependency:Delta location from coordinate;
•Coordinate Reference (参考坐标):hps_propshaft_to_diffcase_front;
•Location:0,0,0;(https://www.daowen.com)
•Location in:local;
•Orientation Dependency:Orient axis along line;
•Coordinate Reference # 1:cfs_mid_front_propshaft;
•Coordinate Reference # 2:hps_propshaft_to_diffcase_front;
•Axis:Z;
•单击Apply,完成._my_AWD_driveline.ground.cfs_propshaft_to_diffcase_front结构框的创建;
•Construction Frame(结构框名称):propshaft_to_diffcase_rear;
•Location Dependency:Delta location from coordinate;
•Coordinate Reference (参考坐标):hps_propshaft_to_diffcase_rear;
•Location:0,0,0;
•Location in:local;
•Orientation Dependency:Orient axis along line;
•Coordinate Reference # 1:cfs_mid_ rear _propshaft;
•Coordinate Reference # 2:hps_propshaft_to_diffcase_rear;
•Axis:Z;
•单击OK,完成._my_AWD_driveline.ground.cfs_propshaft_to_diffcase_rear结构框的创建。
•单击Build > Geometry > Frustum(锥形) > New命令,如图6-13所示;

图6-13 锥形几何体
•Frustum Name:front_pinion;
•General Part:ges_front_propshaft_1;
•Construction Frame:cfs_propshaft_to_diffcase_front;
•Method:scaled off variable;
•Pitch Radius PV:pvs_ring_gear_offset_front;
•Pitch/Top Ratio:0.9;
•Length:40;
•Color:dark gray;
•勾选Calculate Mass Properties of General Part;
•单击Apply,完成前锥形几何体._my_AWD_driveline.ges_front_propshaft_1.grafru_front_pinion的创建;
•Frustum Name:rear_pinion;
•General Part:ges_ rear _propshaft_1;
•Construction Frame:cfs_propshaft_to_diffcase_ rear;
•Method:scaled off variable;
•Pitch Radius PV:pvs_ring_gear_offset_ rear;
•Pitch/Top Ratio:0.9;
•Length:40;
•Color:dark gray;
•勾选Calculate Mass Properties of General Part;
•单击OK,完成前锥形几何体._my_AWD_driveline.ges_front_propshaft_1.grafru_ rear_pinion的创建。