【求助】高手进来看看，关于装配的

ptjmy

下面是我写的配合条件：
tag_t *to_part_occ;
     UF_ASSEM_where_is_part_used(*from_part_occ,[$to_part_occ)]
      UF_ASSEM_mating_condition_t ftf;
      UF_ASSEM_init_mc([$ftf)]
     ftf.mated_object=from_part_ins;
     ftf.part_occurrence=*to_part_occ;
     ftf.name=NULL;
     ftf.user_name=FALSE;
     ftf.constraints[0].from_status=UF_ASSEM_ok;
     ftf.constraints[0].to_status=UF_ASSEM_ok;
     ftf.constraints[0].mate_type=UF_ASSEM_v16_mate;
     ftf.constraints[0].from_type=UF_ASSEM_planar_face;
     ftf.constraints[0].to_type=UF_ASSEM_planar_face;
     ftf.constraints[0].from=first_plan;
     ftf.constraints[0].from_part_occ=*from_part_occ;
     ftf.constraints[0].to=third_plan;
     ftf.constraints[0].to_part_occ=*to_part_occ;
     ftf.constraints[0].offset=NULL_TAG;
     ftf.constraints[0].name="face to face";
     ftf.constraints[0].user_name=TRUE;
     ftf.constraints[1].from_status=UF_ASSEM_ok;
     ftf.constraints[1].to_status=UF_ASSEM_ok;
     ftf.constraints[1].mate_type=UF_ASSEM_v16_mate;
     ftf.constraints[1].from_type=UF_ASSEM_cylindrical_face;
     ftf.constraints[1].to_type=UF_ASSEM_cylindrical_face;
     ftf.constraints[1].from=second_plan;
     ftf.constraints[1].from_part_occ=*from_part_occ;
     ftf.constraints[1].to=fourth_plan;
     ftf.constraints[1].to_part_occ=*to_part_occ;
     ftf.constraints[1].offset=NULL_TAG;
     ftf.constraints[1].name="face to face";
     ftf.constraints[1].user_name=TRUE;
     ftf.num_constraints=2;
     ftf.suppressed=FALSE;
       
     UF_ASSEM_mc_status_t status;
     UF_ASSEM_mc_structure_state_t struct_status;
     UF_ASSEM_dof_t dof;
     int ret=UF_ASSEM_solve_mc([$ftf,&status,&dof,transform)]
status一直返回UF_ASSEM_mc_not_solved ，想不通，不知道错在哪里？高人指点一下

ptjmy