Siemens NX 6 Surface-modeling (Tutorial 2 Mouse)

Transcription

1 Siemens NX 6 Surface-modeling (Tutorial 2 Mouse) Surface-modeling Solid-modeling Assembly Design Design with a Master Model Design in Context Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 1

2 Tutorial 2A - Import 2D outline drawing into Siemens NX 6 - Build 3D curves based on the imported drawing - Build the upper surfaces of the mouse Tutorial 2B - Do the draft analysis to search any undercut portion on the upper surfaces - Build the lower surfaces of the mouse - Convert the surfaces into a solid (Master Model) Tutorial 2C - Build the parting surfaces based on the imported drawing - Create components from the finished model - Create a new part in the assembly (Design in Context) - Modify a part design while looking at other parts (Design in Context) Please be reminded that this series of tutorials is designed to demonstrate a design approach with Siemens NX, rather than the command itself. For the details of commands, please read the online help or attend the software training. Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 2

3 Intellectual Technology Ltd is a regional value added reseller of Siemens PLM solutions. We enable our customers with innovative and collaborative design, engineering, manufacturing, simulation tools. What ITL can do for you: 1. Engineering Design & Development a. Conversion of 2D data into 3D model b. Detailing and Drafting of products for manufacturing with tolerances and surface finishes, Assembly layout drawings and BOM creation c. Reverse Engineering - Creation of accurate product models and detailed drawings using CMM and scanning techniques 2. NX Solution Training a. NX Basic & Advanced Design trainings b. NX CAM Programmer Training c. NX Mould Design/Electrode Design d. Other Customized training 3. NX CAM Post Processor Development We provide services of post processor customization and development for the following machines a. 3 Axis, 4 Axis and 5 Axis Milling b. Turning, EDM and Wire EDM 4. NX Solution Maintenance and Support We provide NX solution annual maintenance and support to our customers. This solution maintenance includes the following major services: a. Dedicated Application Engineer to Support the solution. b. On-site solution support c. Solution upgrades, upgrade trainings d. Free phone enquiries Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 3

4 Let s Start! Tutorial 2A Create a new project folder (e.g. C:\projects\mouse) and copy the drawing file (mouse_outline_b.dxf) into the folder Enter Siemens NX 6 by double-clicking its icon on the desktop Select Roles Essential with full Menus, then click ok File/New Select Model as Type Enter master_model_a.prt as file name Select the path of the project folder Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 4

5 Tutorial 2A Double-click on the default Datum coordinates system Select Absolute CSYS as type Double-click to edit To Import the outline drawing:- File/Import/DXF Select the file mouse_outline_b.dxf Select WORK as Import to Part (the imported curves will be pasted on the XY plane) Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 5

6 Tutorial 2A To confirm that the size of the drawing is correct:- Double-click on the scale line of the drawing Check if the displayed length is 50mm; if not, we need to enlarge or shrink the drawing into the correct size Delete the scale line ( we don t need it anymore) To Reposition the 3 views (offset from absolute datum by 150mm):- Edit/Move Objects Select all the curves of Top View Select Move Handle Only Drag the handle to the midpoint of the arc Deselect move handle only Select Move Original Enter x =0. y=0, z=150 then rotate about z by 90deg (clockwise) Click Apply Handle (free to move) Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 6

7 Tutorial 2A Select all curves of Front View Select Move Handles Only Draft the handle to the midpoint of the line Deselect move handles only Enter x =0, y= -150, z=0 Then rotate about x by 90deg (as shown ) Click apply Select all curves of Right View Select Move Handles Only Draft the handle to the endpoint of the line Deselect move handles only Enter x =150, y= 2.85, z=0 Then rotate about x by 90deg (as shown ) Rotate about z by 90deg (as shown ) to complete Result Top View Right View Front View Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 7

8 Tutorial 2A To Change all curve colors to Yellow:- Select all curves Right-click on a curve, select edit display Select Yellow as Color To Move all curves to a layer99:- Select all curves Select Format/ Move to Layer Enter 99 To make all layers Invisible, except layer 1, 61&99:- Format/Layer Settings UnTick all layers, except 1, 61, & 99 Select visible only for layer99 Click close untick Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 8

9 Insert Datum/Datum plane Select xy plane Distance 50mm Tutorial 2A Insert/Sketch Select the offset plane Draw a point as shown Mirror the point around y axis Draw a 3-point arc (start & end at the existing points, middle at the origin) Drag the endpoint to make it longer (the arc should match the reference) Click icon Finish Sketch Draw a point here Mirrored point Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 9

10 Tutorial 2A Insert Datum/Datum plane Select xz plane Reverse Direction Distance 50mm Insert/Sketch Select the offset plane Draw a point as shown Mirror the point around z axis Draw a 3-point arc (start & end at the existing points, middle on the yellow arc) Drag on the curve to adjust radius Drag an endpoint to make it longer Click icon Finish Sketch drag drag Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 10

11 Tutorial 2A To build a 3d curve by combined projection :- Insert/ Curve from Curves/ Combined Projection Select sketch.0 as curve.1 Select sketch.1 as curve.2 (projection direction = normal to curve) Sketch.1 Sketch.0 Hide Sketch.0 & Sketch.1 (right-click, select hide ) Hide Plane1 & Plane2 (This combined curve can fit the shapes of both top view and front view) Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 11

12 Tutorial 2A Insert/Datum/Datum plane Select yz plane Switch to Top View Drag the plane onto the plane (we can drag the green ball to make the plane bigger) (offset value = 30.5) drag Insert/Sketch Select the offset plane, click ok Draw two arcs (tangent to each other) Click icon Constraints Select the end point and the absolute y axis Select point on curve (the endpoint is now on y-axis) Adjust the shape & position of the arcs so that they can match the yellow reference Click icon finish sketch Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 12

13 To Create an extruded surface:- Insert/Design Feature/Extrude Select the combined curve as Section Select +Z as the direction Enter 20 mm as distance Tutorial 2A To Create a Draft 5 deg (from parting line):- Insert/Detail Feature/Draft Select From Edges as type Select +Z as Draw Direction Select the lower edge Enter 5 deg as Angle 1 Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 13

14 To Create an extruded surface with Draft:- Insert/Design Feature/Extrude Select Sketch.2 as Section Select +Z as the direction Enter 20 mm as distance Select From Start Limit as Draft Enter 5 deg as Angle Tutorial 2A To Mirror a surface:- Insert/Associative Copy/Mirror Body Select this surface as body Select yz plane as mirror plane result Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 14

15 Insert/Detailed Feature/Face Blend Select surface as Chain1 Select surface as Chain2 Tutorial 2A (Both arrows should point inward; if not, reverse it) Enter 5mm as Radius Select Trim to all input faces Repeat the above steps for the opposite side result Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 15

16 Tutorial 2A Hide Datum.3 Insert/Sketch Select XZ plane, click ok Insert/ Curve from Curves/Offset from curve Select the combined curve 3.5 mm as offset value (We can create an offset curve from any entity that is out of the sketch.) Click icon Finish Sketch Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 16

17 Tutorial 2A To create a sketch mating with an external sketch:- Insert/Sketch Select yz plane Draw two arcs as shown (tangent to each other) Draw a horizontal line starting from the connecting point, then make either one tangent to it; Convert the line to a reference line Create an intersection point on the offset curve (Insert/Curve-from-curves/intersection point) Make a Point on curve constraint Horizontal line(reference) Adjust the shape & position of the arcs so that they can match the yellow reference (just drag on curves or points) Click icon finish sketch Offset curve Coincided with y axis Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 17

18 Tutorial 2A Insert/Datum/Datum plane Select XZ plane Select the endpoint Select Associative Insert/Sketch Select the offset plane, click ok Draw a point as shown Mirror the point around Z axis Draw a 3-point arc (start & end at the two points, middle at the point ) Drag on the curve to adjust radius Drag the endpoint to make it longer Click icon Finish Sketch Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 18

19 To Create a Swept surface ( 1section & 2 guides):- Insert/Sweep/Swept Select Single Curve on selection filter Select Curve as Section Select Curve as Guide 1 Click Add new set Select Curve as Guide 2 Insert/Trim/Trim-and-Extend Select Make Corner as type Select a surface as Target Select the other surface as Tool Reverse arrows so that the result is as shown Tutorial 2A Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 19

20 Insert/Trim/Trim body Select the surface as Target Select Plane as Tool (arrow should point backward; if not, reverse it) Tutorial 2A Insert/Detail-Feature/Edge Blend Select an edge (all tangent edges are selected automatically; selection filter = tangent curves) 7mm Specify four points as variable radius points Enter values as shown 3mm 3mm 7mm Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 20

21 Draw one horizontal line at point (Insert/Curve/Line, select associative ) Draw one vertical line at point Tutorial 2A Insert/ Curve-from-Curves/Bridge Select horizontal line as start object Select vertical line as end object Select G1 (tangent) as start Select G1 (tangent) as end Select Associative Orient View to Top View Drag the arrows to match the yellow reference Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 21

22 Tutorial 2A Insert/Curve-from-Curves/Mirror Select the bridge curve as Curve Select YZ plane as Mirror Plane Sketch.6 Insert/Curve-from-Curves/Mirror Select Sketch.3 as curve Select YZ plane as mirror plane Hide Sketch.6 Insert/Mesh Surface/Through-Curve-Mesh Select Primary Curve 1 &2 Select Cross Curve 1, 2 & 3 (Refer to next page) Select G1 tangent as first primary continuity, select the surface Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 22

23 2 Primary Curves Primary curve1 Tutorial 2A Selection filter = Tangent curves Select an edge of Primary curve1 Add New Set Primary curve 2 Selection filter = Single Curves Select the two arcs of Primary curve 2 (Arrow direction same as Curve1) Add New set 3 Cross Curves File/Save Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 23

24 Tutorial 2A To Check if the whole skin can meet the required shape Orient view to Top View Check Orient view to Front View Check Orient view to Right View Check Take a Rest! File/ Save Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 24

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26 Insert/Sketch Select Plane.1, click ok Draw a vertical line, then mirror it Draw two arcs (tangent to lines) Click icon finish sketch Tutorial 2B Insert/Trim/Trimmed-Sheet Select the surface as Target Select the last sketch as Boundary Object Normal to Curve Plane Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 26

27 Tutorial 2B Insert/Mesh Surface/Sections Select Two Point Radius as Type Select Start guide Select End guide Select Spine curve Law type = Constant Value = 5mm Insert/Mesh surface/through Curves Select section1 Select section2 Select G2 curvature as First section continuity Select the last surface Select G0 curvature as last section continuity Flow direction = Perpendicular Repeat the above steps to close another opening Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 27

28 Tutorial 2B Insert/ Combine Bodies/ Sew Select the biggest surface as Target Select other surfaces as Tool Analysis/Shape/Draft Change draft angle to 3 deg An error is found (not enough 3 deg) Double-click the line Add 10 deg The bridge curve will be updated (if it is associative) undercut (If you forgot to make the bridge curve associative, double-click to edit, drag the end point out and snap onto the endpoint of the line again, select G2.) Do Draft analysis again to see if the error is corrected. Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 28

29 We are going to build a lower skin Insert/Design Feature/Extrude Select the curve Enter -20mm as End Limit distance Tutorial 2B Insert/Design Feature/Draft Select From edges as type Select +z as Draw Direction Select the top edge Orient View to Right View Drag the draft angle to 10 deg (to match the Yellow reference) drag Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 29

30 Tutorial 2B Insert/Flange Surface/Law Extension Select the sketch as base profile Select Z as reference vector Length law = constant, 30mm Select Linear as Angle Law type Start = 10 deg, End = 2 deg start end Insert/Associative Copy/Mirror Body Select the surface Select yz plane as mirror plane Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 30

31 Insert/Detail Feature/Face Blend Select surface as Chain1 Select surface as Chain2 Tutorial 2B (Both arrows should point inward; if not, reverse it) Enter 4.5mm as Radius Select Trim to all input faces Repeat the above steps for the opposite side Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 31

32 Insert/Curve/Line Select the origin as start point Select any point on x-axis Enter -50mm as start limit Enter 50 mm as end limit Insert/Design Feature/Extrude Select the line as section Select y as direction Drag the handle to define the length, longer than the model Tutorial 2B Insert/Combine Bodies/Sew Select all surfaces, except the last extruded surface Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 32

33 Insert/Trim/Trim-and-Extend Select Make Corner as type Select Target surface Select Tool surface Reverse arrows so that the result is as shown Tutorial 2B To check if the solid can be created:- Right-click Name, deselect Timestamp order One Sheet Body is found, but not a solid! Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 33

34 Tutorial 2B To find out the surface gaps that lead to the failure of surface-to-solid conversion:- Insert/Offset-Scale/Sheets-to-Solid-assistant Enter 0mm as First Offset & Second Offset Select the surface Click Apply Select Show Sheet Boundary (two gaps are found) Click Cancel Right-click Name, select Timestamp order Double-click to edit the last SEW feature on tree Increase Tolerance from to 0.05 (Now a solid can be created) Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 34

35 Insert/ Design Feature/Edge Blend Select the edge Enter 1mm as radius Insert/Offset-Scale/Shell Select Shell all Faces as type Select the solid (arrow should point inward) Enter 2.5mm as thickness Show all sketches/curves/ datums Move all sketches/curves to Layer 41 Move all offset datum planes to Layer 61 Tutorial 2B File/Save Take a Break! Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 35

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37 Tutorial 2C We ve built the overall shape of the mouse. Now, we are going to create parting surfaces, and then split the master model into separate components. Check Top View Check Front View Check Right View (the model should match the three reference views) Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 37

38 Tutorial 2C Make Layer 41 visible Insert/Sweep/ Swept Select Section curve Select Guide curve Select Anywhere along guide as section location section guide Insert/Design Feature/Extrude Select the two surface edges Select +z value as direction Enter 3 mm as start limit, -10mm as end limit Insert/Offset Scale/Offset Face Select the extrude surface Enter 2.5mm as offset (arrow pointing inward) Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 38

39 Insert/Trim/Trim-and-Extend Select By Distance as type Select the surface edges Enter 10mm as extension Tutorial 2C Hide the solid body Draw a line (from point to point); select associative Insert/Mesh Surface/N-sided Surface Select the line & the edges Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 39

40 Insert/Trim/Trim-and-Extend Select the surface edge Enter 20mm as extension Insert/Combine Bodies/Sew Select the two surfaces Tutorial 2C Insert/Trim/Trim-and-Extend Select Make Corner as type Select Target surface Select Tool surface Reverse arrows so that the result is as shown result Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 40

41 Insert/Sketch Select Datum plane1 on tree, click ok Draw a symmetrical arc as shown Click icon finish sketch Insert/Design Feature/Extrude Select the sketch Reverse Direction Enter 80mm as distance, click ok. Tutorial 2C Create a sketch on Datum plane 1 Create an extrude surface (80mm downward) Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 41

42 Tutorial 2C Show the Solid Format/Layer settings Make layer 41 (curves) invisible Make layer 61 (datums) invisible Select all remaining curves/sketches Format/Move to Layer Move them to layer 42 File Save File/New/Assembly Enter Mouse_assembly_a.prt as file name; in the same project folder Select master_model_a.prt on the list Select Absolute Origin as Positioning Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 42

43 Tutorial 2C We are going to split the Master Model into separate parts (part files) The outlook of the mouse is controlled by the Master Model. If we make any change on it, the linked parts will be updated automatically. Also, because all components are created from one model, their surfaces & boundaries can always match among themselves when assembled together. With Link Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 43

44 Tutorial 2C To Create Upper Body:- Assemblies/Components/Create New Component Select model as type Enter upper_body_a.prt as filename, click ok Double-click Upper_body on tree (Jump into part level from assembly level) Insert/Associative Copy/WAVE geometry linker Select the solid & three surfaces Hide master model (untick it on tree) Insert/Trim/Trim Body (3 times) to get this shape Move all surfaces to Layer 11 Hide all layers except layer 1 Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 44

45 Tutorial 2C To Create Right Button:- Double-click mouse_assembly (Jump into assembly level from part level) Hide (untick on tree) Upper Body Show (Tick on tree) mastermodel Create a new component (refer to previous steps) Enter right_button_a.prt as filename Copy the solid & parting surfaces from master model Hide mastermodel Create an Offset Surface (one face only) (0.5mm) Offset face (1mm, forward) Offset face (1mm, upward) Do 3 Trims Move all surfaces to Layer 11 Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 45

46 Tutorial 2C To Create Left Button:- Double-click mouse_assembly Hide other component Show mastermodel Create a new component Enter left_button_a.prt as filename Copy the solid & parting surfaces from master model Hide mastermodel Offset Surface (one face only) (0.5mm) Offset face (1mm) Offset face (1mm) Do 3 Trims Move all surfaces to Layer 11 Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 46

47 Tutorial 2C To Create Middle Button:- Double-click mouse_assembly Hide other component Show mastermodel Create a new component Enter middle_button_a.prt as filename Copy the solid & parting surfaces from master model Hide mastermodel Do 2 trims Move all surfaces to Layer 11 Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 47

48 Tutorial 2C To Create Lower Body:- Double-click mouse_assembly Hide other component Show mastermodel Create a new component Save it as middle_button_a.prt Copy the solid & parting surfaces from master model Hide mastermodel Offset face (0.5mm, downward) Trim body Move all surfaces to Layer 11 Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 48

49 Tutorial 2C To Create a Wheel (New Part):- Double-click mouse_assembly Show all components, except mastermodel Create a new component Enter wheel_a.prt as filename Double-click wheel_a Insert/Sketch Select yz plane (zoom in to view), click ok Draw a circle at origin (dia 20mm ) Click finish sketch Insert/Design feature/extrude Select the sketch Enter 3mm as start, -3mm as end Add Edge Blends 2mm Move sketch to layer 21 Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 49

50 Double-click mouse_assembly Tutorial 2C Assemblies/Components/Move component Select Wheel model Click specify orientation on the command menu Drag the wheel to the correct position Switch to top view, the wheel is nearly in the middle of the slot Switch to right view, the wheel position is roughly as shown Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 50

51 Design in Context make a design change while looking at other parts Double-click middle_button_a Insert/Sketch Select xy plane Draw a profile slightly bigger than the wheel Click icon finish sketch Insert/Design Feature/Extrude Select the sketch Select symmetric value as limits Enter 100mm Select Subtract, select the solid Double-click mouse_assembly on tree Tutorial 2C File/Save all Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 51

52 Tutorial 2C Click tab page System materials on the left Apply material texture one by one (just drag and drop) Upperbody, leftbutton & rightbutton (aluminium) Middle button & wheel (plastic black) Lowerbody (plastic shiny resin red) Drag & drop Double-click any material on list, then we can see Materials in part Edit Plastic Black, change roughness to 0.05 View/Perspective View/Visualization/High-Quality-Image Click icon basic scene editor Deselect Use Image based lighting Start Shade, then save it as tif Finished! Well Done! Version 1a Feb 2010 Copyright 2010 by Intellectual Technology Limited Page 52

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