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车制精密螺纹时通常是采用样板进行对刀。往往花费很多工时且不易校正准确。这里介绍一种简单的对刀工具,用这种工具能保证装刀质量。工具的形状如附图所示,长度L及直径d的尺寸应根据经常加工工件螺纹的粗细而定,当中d为一圆柱体,车有几道沟槽,各沟槽分别制成60°、55°、40°及30°和29°几种常用螺纹的角度;两端制成方形并倒棱。两方形体各平面必须跟轴线平行;对面距h应比当中圆柱直径d稍大,头端制成如法兰形的圆盘,D直径大小约为
When the precision screw thread is usually used on the model knife. Often it costs a lot of man-hours and is not easy to calibrate accurately. Here is a simple tool on the knife, with this tool can guarantee the quality of the knife. The shape of the tool as shown in the figure, the length L and diameter d size should be based on the thickness of the thread often processed work, where d is a cylinder, the car has a few grooves, the grooves were made 60 °, 55 °, 40 ° and 30 ° and 29 ° angle of several common thread; both ends made of a square and chamfered. The two planes of the plane must be parallel with the axis; opposite distance h should be slightly larger than the diameter of the cylinder d, head made like a flange-shaped disc, D diameter of about