作者：米米丫头2502860283 | 来源：互联网 | 2023-09-18 11:28
篇首语：本文由编程笔记#小编为大家整理，主要介绍了UG NX二次开发(C#）-建模-拔模功能相关的知识，希望对你有一定的参考价值。
概念
拔模通常用于对模型、部件、模具或冲模的竖直面添加斜度&＃xff0c;以便借助拔模面将部件或模型与其模具或冲模分开。拔模&＃xff0c;铸造时为了从砂中取出木模而不破坏砂型&＃xff0c;往往零件毛胚设计带有上大下小的锥度&＃xff0c;叫拔模斜度。拔模斜度有三种形式&＃xff1a;增加厚度法&＃xff0c;加减厚度法&＃xff0c;减小厚度法。
拔模是对模具或铸件的面做锥度调整。一个用于成型或铸造的零件必须被正确设计和适当拔模&＃xff0c;以便取出模具。拔模角被应用在一个扩展分型线相反的方向。
拔模就是为了保证模具在生产产品的过程中产品能顺利脱模&＃xff0c;我们设计模具的时候有时就没有设置拔模度&＃xff0c;而是用我们手工抛光时候自然形成的斜度&＃xff08;很小&＃xff09;这样也能保证脱模的。其实对于高精度零件&＃xff0c;只要你模具型腔和型芯表面粗糙度小&＃xff08;用抛光或工艺磨床&＃xff09;&＃xff0c;不用拔模也能顺利脱模的。当然顶杆设计也要合理。
拔模的方法
在录制的代码中&＃xff0c;我们可以筛选出有用的切必要的代码&＃xff0c;将这些代码作为一个方法来使用。
public static void CreateDraft(Vector3d vector3D, Edge edge, double angle, out NXOpen.Features.Feature feature)
NXOpen.Session.UndoMarkId markId1;
markId1 &＃61; theSession.SetUndoMark(NXOpen.Session.MarkVisibility.Visible, "起点");
NXOpen.Features.Feature nullNXOpen_Features_Feature &＃61; null;
NXOpen.Features.DraftBuilder draftBuilder1;
draftBuilder1 &＃61; workPart.Features.CreateDraftBuilder(nullNXOpen_Features_Feature);
NXOpen.Unit unit1 &＃61; ((NXOpen.Unit)workPart.UnitCollection.FindObject("MilliMeter"));
NXOpen.Expression expression1;
expression1 &＃61; workPart.Expressions.CreateSystemExpressionWithUnits("0", unit1);
draftBuilder1.DistanceTolerance &＃61; 0.001;
draftBuilder1.AngleTolerance &＃61; 0.050000000000000003;
draftBuilder1.AngleTolerance &＃61; 0.050000000000000003;
draftBuilder1.DistanceTolerance &＃61; 0.001;
draftBuilder1.DraftIsoclineOrTruedraft &＃61; NXOpen.Features.DraftBuilder.Method.Isocline;
NXOpen.GeometricUtilities.DraftVariableAngleData draftVariableAngleData1;
draftVariableAngleData1 &＃61; draftBuilder1.VariableAngleData;
NXOpen.GeometricUtilities.DraftPointData[] points1;
points1 &＃61; draftVariableAngleData1.GetDraftPoints();
theSession.SetUndoMarkName(markId1, "拔模 对话框");
NXOpen.Expression expression2;
expression2 &＃61; workPart.Expressions.CreateSystemExpressionWithUnits("0", unit1);
draftBuilder1.TypeOfDraft &＃61; NXOpen.Features.DraftBuilder.Type.Edge;
draftBuilder1.TwoDimensionFaceSetsData.Clear(NXOpen.ObjectList.DeleteOption.Delete);
draftBuilder1.FaceSetAngleExpressionList.Clear(NXOpen.ObjectList.DeleteOption.Delete);
draftBuilder1.EdgeSetAngleExpressionList.Clear(NXOpen.ObjectList.DeleteOption.Delete);
NXOpen.Point3d origin1 &＃61; new NXOpen.Point3d(0.0, 0.0, 0.0);
NXOpen.Vector3d vector1 &＃61; new NXOpen.Vector3d(1.0, 0.0, 0.0);
NXOpen.Direction direction1;
direction1 &＃61; workPart.Directions.CreateDirection(origin1, vector1, NXOpen.SmartObject.UpdateOption.WithinModeling);
draftBuilder1.Direction &＃61; direction1;
NXOpen.ScCollector nullNXOpen_ScCollector &＃61; null;
NXOpen.ExpressionCollectorSet expressionCollectorSet1;
expressionCollectorSet1 &＃61; workPart.CreateExpressionCollectorSet(nullNXOpen_ScCollector, angle.ToString(), "角度", 0);
draftBuilder1.EdgeSetAngleExpressionList.Append(expressionCollectorSet1);
NXOpen.ScCollector scCollector1;
scCollector1 &＃61; workPart.ScCollectors.CreateCollector();
NXOpen.SelectionIntentRuleOptions selectionIntentRuleOptions1;
selectionIntentRuleOptions1 &＃61; workPart.ScRuleFactory.CreateRuleOptions();
selectionIntentRuleOptions1.SetSelectedFromInactive(false);
NXOpen.Edge edge1 &＃61; edge;
NXOpen.Edge nullNXOpen_Edge &＃61; null;
NXOpen.EdgeTangentRule edgeTangentRule1;
edgeTangentRule1 &＃61; workPart.ScRuleFactory.CreateRuleEdgeTangent(edge1, nullNXOpen_Edge, true, 0.050000000000000003, false, false, selectionIntentRuleOptions1);
selectionIntentRuleOptions1.Dispose();
NXOpen.SelectionIntentRule[] rules1 &＃61; new NXOpen.SelectionIntentRule[1];
rules1[0] &＃61; edgeTangentRule1;
scCollector1.ReplaceRules(rules1, false);
expressionCollectorSet1.Collector &＃61; scCollector1;
NXOpen.Session.UndoMarkId markId2;
markId2 &＃61; theSession.SetUndoMark(NXOpen.Session.MarkVisibility.Invisible, "拔模");
theSession.DeleteUndoMark(markId2, null);
NXOpen.Session.UndoMarkId markId3;
markId3 &＃61; theSession.SetUndoMark(NXOpen.Session.MarkVisibility.Invisible, "拔模");
feature &＃61; draftBuilder1.CommitFeature();
theSession.DeleteUndoMark(markId3, null);
theSession.SetUndoMarkName(markId1, "拔模");
NXOpen.Expression expression3 &＃61; expressionCollectorSet1.ItemValue;
draftBuilder1.Destroy();
workPart.MeasureManager.SetPartTransientModification();
workPart.Expressions.Delete(expression1);
workPart.MeasureManager.ClearPartTransientModification();
workPart.MeasureManager.SetPartTransientModification();
workPart.Expressions.Delete(expression2);
workPart.MeasureManager.ClearPartTransientModification();
theSession.CleanUpFacetedFacesAndEdges();
方法调用
编写一段调用代码&＃xff0c;如下&＃xff1a;
Vector3d vector3D &＃61; _VectorSelect.Vector;
Edge edge &＃61; (Edge)_EdgeSelect.GetSelectedObjects()[0];
double angle &＃61; 20;
Feature feature;
CreateDraft(vector3D,edge,angle,out feature);
创建效果
采用二次开发的拔模效果如下图所示。
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