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数量较少或单件球面零件的生产,可用双手操作法进行加工.它是用双手同时摇动中、小拖板,通过双手协调的动作,使刀尖走过的轨迹曲线处处曲率半径相等,且使该曲率半径为球面的圆弧半径.这样,就能车出所需要的球形零件.虽然双手控制法不需任何其它附件就能车出一些精度要求不高的圆球面,但缺点是加工出来的零件精度低,生产效率亦低,同时必须有较熟练的操作技巧.为了克服上述缺点,在此介绍一种新的、不需任何其它附件的加工方法——扳动小拖板车削圆球.在日常生活中,我们可以看到:木工加工圆柱形木棍时,先把木棍加工成横截面为正方形,然后去掉四个棱角,使横截面成为正八边形,再去掉八个棱角,使横截面成为正十六边形,……等等.这样,方木棍就成了圆木棍.
The number of small or single spherical parts production, the method can be used two-hand processing.It is simultaneously shaking hands with both hands, small carriage, through the coordinated action of both hands, so that the tip of the curve through the curvature radius of curvature at the same everywhere, and So that the radius of curvature of the spherical radius of the arc.Thus, will be able to car out the required spherical parts.While the two-hand control method without any other accessories can produce some less demanding spherical surface, but the disadvantage is processed In order to overcome the above shortcomings, this article introduces a new processing method that does not need any other accessories - pull the small pallet turning round the ball. In daily life, we can see: When carving a cylindrical stick, the stick is first processed into a square with a cross section, and then the four corners are removed to make the cross section into a regular octagon, and then the eight corners are removed so that The cross-section becomes regular hexagonal, ... etc. Thus, the square stick becomes a round stick.