《机械工程师》２０００年第２期第１９页“不找圆心能画同心圆的新型圆规”一文所设计的新型圆规，解决了在盘类、环类或大箱体的轴承孔上划出同心圆并等分的问题，但结构上仍存在着一些不足。１原设计存在的问题 新型圆规的结构如图１所示，其关键是立柱１必须处于孔的中心位 “Mechanical Engineers,” No. 2, 2000, p. 19 The novel compasses designed for a new type of compass without center of circle can solve the problem of concentric circles Round and equally divided, but there are still some deficiencies in structure. 1 original design problems New compasses the structure shown in Figure 1, the key is the column 1 must be in the center of the hole