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在发动机制造、飞机制造、机床制造或其他机械制造中,常常会碰到带有双斜平面的零件。图1表示实际生产中所遇到的一种零件。它的上平面相对于底部的基准平面是双向倾斜的。对角度精确度要求不高的双斜平面零件,可以在零件表面上划斜面线,按线找正加工。对角度要求较高的零件.例如其角度公差为±5′或者更高时,划线的加工方法不能保证零件的精度要求。这时,一般要用双向正弦台将零件精确定位,来保证其斜面加工时的角度公差。
In engine manufacturing, aircraft manufacturing, machine tool manufacturing or other machinery manufacturing, often encounter double-inclined plane parts. Figure 1 shows the actual production of a part encountered. Its upper plane is bi-directional with respect to the base reference plane. Double-slope flat parts that do not require high angle accuracy can draw oblique lines on the surface of the part and can be machined according to the line. For parts with high angle requirements, for example, when the angle tolerance is ± 5 ° or higher, the scribing method can not guarantee the precision requirement of the part. At this time, the general use of two-way sine Taiwan will be precise positioning of parts to ensure that the bevel processing angle tolerance.