目前,国内刻制球面分划板一般采用两种方法。一种是利用万向接头原理,使刻刀始终垂直于球面切线进行刻划,这种方法可刻划任何曲率半径的球面分划板,有的厂就利用这种原理制造了具有万向刀架或万向承座的专用球面刻线机。但是,这种刻线机的万向接头要求精度高,制作麻烦,机器用途单一。它虽然使用模板缩放,但一次只能刻划一块零件,效率不高。另一种方法是在没有专用球面刻线机的条件下,用手摇万能刻线机进行刻线。它的刀架结构形式是直 At present, the domestic engraved spherical reticle generally use two methods. One is the use of universal joints principle, the knife is always perpendicular to the spherical tangent to score, this method can be scored any radius of curvature of the spherical reticle, and some plants use this principle to create a universal knife Dedicated spherical groove engraving machine or universal bearing. However, this type of grooved universal joints require high precision, making trouble, the machine uses a single. Although it uses the template zoom, but only one carved a piece, inefficient. Another method is to engrave a hand-held universal reticle machine without a dedicated spherical reticle machine. Its tool holder structure is straight