摘要
本文提出一种新型的绘制椭圆仪器——杠杆式椭圆仪。该仪器借助控制杆控制机构的运动轨迹,从而避免了机构之间的相互干涉,克服了运动过程中的死点,并大大简化了结构,使其使用起来方便、可靠、操作迅速,具有一定的实用价值。文中介绍了该椭圆仪的绘图原理、结构形式、设计和使用方法。
A new type of drawing apparatus (lever-type ellipsograph) is introduced. The motion locus of mechanisms can be controlled by means of operating a lever. This makes the apparatus have such advantages that the interference between mechanisms is avoided and there exists no dead centre during operation. It is simple in structure, swift in action, convenient and reliable in operation. So it has surely practical value. The drawing principles, structures, designs and operating method of the ellipsograph are also described in this paper.
