数控专业外文翻译---宽槽圆柱凸轮数控加工技术的研究-数控设计(编辑修改稿)

数控专业外文翻译---宽槽圆柱凸轮数控加工技术的研究-数控设计(编辑修改稿)内容摘要：

idth Bi, then extracts the processing to need the trough cavity all knives position path to launch the curve. cam path middle line processing coordinates transformation method Above the putation is launches in the plane in the round cylinder to carry on, in order to extract the processing column cam path cavity the knife position path, must launch the plane in the curve to transform to the round cylinder in. The supposition rotating axis for circles Xaxis A axis, pi is in a knife position path knife position spot, it launches in the curve in the twodimensional surface the coordinates for (x,s), on four coordinates engine beds coordinates is (x,y,z,a). Because the column cam path cavity usually is and so on deep, therefore, the z coordinates in establish after depths which needs to process, in the processing is invariable。 Below (2) In the formula, R is the column cam shaft radius. The previous type is the present universal use coordinates transformation formula, regarding uses the standard cutting tool to process the column cam along the cam path middle line milling is correct. the question analysis to the previous type in the width trough column cam processing When applies the previous type promotion in the width trough column cam numerical control processing, has had some questions actually through the coordinates transformation putation knife position path in the actual processing. Finished after the column cam path processing, in order to examine whether conforms to the requirement, with the diameter was equal to the column cam bowl examines has carries on the examination, discovered actually processes the trough width does not wait for the phenomenon which, has jams. The careful observation, processes originally on trough cavity plane of normal section not always inferior width rectangular trough, but sometimes is on under the width the narrow loudspeaker trough. In order to clarify reason, (2) expressed the coordinates transformation method to the formula to carry on the thorough analysis and the research. Like chart 3 shows, (1) may know by the formula, processes the trough cavity two sides surfaces knife position path online pl and the pr spot is by the trough cavity middle line in po equalspace bias but, (2) transforms after the formula, pl and the pr point correspondence corner is not equal to a Po corner, also is pl and pr corresponding cutter bar vector vlvl and po point correspondence cutter bar vector vovo not parallel, therefore, processes the trough cavity has bee on under naturally the width the narrow loudspeaker trough, but is not on inferior width rectangular trough which needs. Supposes the section and the spool thread included angle for theta, the column cam shaft radius is R, cutter bar vector VlVl and VoVo theangle error is: δ a＝ (B/2－ r)sinθ /R (3) a)Cylinder cam slot sketch map b)The AA cuts to face enlarge the sketch map Chart 3 Column cam path processing schematic drawing (3) may know by the formula, whenθ = 0176。 , when is the cam path middle line and the column spool。