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一、圆球车刀(图1) 将刀片加工到成形尺寸后,再用两个螺钉把它紧固在刀体上,既省掉焊接,又便于制造和重磨。若刀片与刀杆焊接,则因焊接面积较大,难以焊牢。如采用铜焊,便不能高温淬火。如先将刀片淬火,再铜焊,又会使刀刃退火。如在高频加热炉上焊接与淬火,刀片既不可能淬透,硬度也不会均匀一致。所以,采用机夹结构是目前较为合适的方案。刀片圆弧的成形车削和磨削,可采用图2所示夹具进行. 二、内弧车刀(图3) 这种刀具是用来车削内球面的,结构形式与圆球车刀基本一样,只是在刀片制造上稍有不同。前、后角磨削时,可采用图4心轴固定刀片,在外圆磨床上
First, the ball lathe knife (Figure 1) After the blade is machined to form the size, and then use two screws to fasten it on the body, not only eliminates welding, but also easy to manufacture and re-mill. If the blade and arbor welding, due to the larger welding area, it is difficult welding. Such as the use of brazing, it can not be quenched at high temperature. If the first blade hardening, and then brazing, will make the blade annealing. As in the high-frequency heating furnace welding and quenching, the blade can neither quench the hardness will not be uniform. Therefore, the use of folder structure is the more appropriate program. Forming and turning of the blade arc can be carried out using the jig shown in Figure 2. Second, the inner arc turning tool (Figure 3) This tool is used to turn the inner spherical surface, the structure of the form and ball lathe basically the same, Just slightly different blade manufacturing. Before and after the corner grinding, the mandrel can be used Figure 4 fixed blade, cylindrical grinding machine