數(shù)控專業(yè)外文翻譯---寬槽圓柱凸輪數(shù)控加工技術(shù)的研究-數(shù)控設(shè)計(jì)-文庫吧資料
2025-05-22 01:35本頁面
【正文】 y 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。 Then transforms through the coordinates, will launch the curve XS transformation will be on four coordinates engine beds knife position path. Under discusses no matter what in a processing working procedure launches curve XS the solution method, as well as production final knife position path coordinates transformation method. curve XS the solution Like chart 2 shows, Lo is the column cam path middle line, regarding the i working procedure, Lli and Lri respectively the trough cavity which is going to process be this working procedure left, the right two sides surface launches the curve, this width is Bi, processes the cutting tool radius is r (obviously 2r ≤ Bi), processes this cavity to be left, the right side knife position path launches the curve is CLli and CLri ,supposes Po is in a trough cavity middle line spot, Po is the trough cavity middle line in the Po place law arrow, Then is left, the right knife position path launches in the curve corresponding points pli and the pri putational method is: (1) Figure 2 column cam path twodimensional developed view Po along the trough cavity middle line migration, namely may extract this working procedure knife position path to launch curveXS in the XOS plane。. along the circumference surface milling scopeIs suitable for with to have the numerical control rotary abutment the vertical numerical control milling machine to carry on the processing. According to the column cam actual structure, selects the belt key the spindle makes when the cam processing the radial direction and the week to the localization datum, makes the axial localization datum by the spindle ledge, and the nose thread contracts the column cam with the spindle in front of through the nut. The column cam axial and the radial direction size is generally big, in order to overe because the bracket processes time the cutting force creates in the spindle distortion and the processing process produces inspires trembles, uses a supporting on the tailstock, withs
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