Siemens NX

Model a gearbox housing with bearing bosses, bolt flange and mounting lugs

Software: Siemens NX
Platform: Windows
Length: 2 h 59 min
Resolution: 1920 × 1080
Output: PRT, STP

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3.0hours

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Windows

Task

Create a 3D solid model and an associated drawing of a cast gearbox housing in millimetres. Work from the supplied dimensioned diagrams diagram_01.png, diagram_01_detail01.png, diagram_01_detail02.png, diagram_01_detail03.png and diagram_01_detail04.png.

The housing is an open-top rectangular box. Its main features are:

Top bolt flange. A continuous flange runs around the top, with rounded corners (R10) and a vertical bolt hole at each of the four corners. Cylindrical bosses run down the inside corners of the cavity under these holes.
Bearing bosses. Each long side wall carries two circular bearing bosses of R40, with their centres 64 apart. Each boss has a central bore of R14 (Ø28) surrounded by four equally spaced bolt holes. The boss pair sits on a U-shaped raised pad on the wall.
Bore height. The bore axes are 57 above the base and 45 below the top face.
Mounting lugs. A triangular lug projects from each end of the base. Each lug has a rounded tip of R18 and a vertical Ø16 through hole with a Ø28 counterbore (2X each).
Base relief. The underside has a shallow relief between the lugs.

Key dimensions:

Overall length: 263.96.
Body length: 166.
Lug projection: 48.98 each side.
Bore centres from the lug tips: 99.98 each side.
Overall width: 96.
Overall height: 102.
Overall envelope: about 264 × 96 × 102 mm.

The finished part shall be a single closed solid body, built only from planar and cylindrical faces. Its volume shall be approximately 618,019 mm³.

Save the part as Dual-Port_Valve_Housing.prt. Create the drawing in Dual-Port_Valve_Housing_dwg1.prt, referencing the part.

The drawing shall be a single sheet in third-angle projection, containing:

Top, front, side and isometric views.
Dimensions including the overall length, the 166 body length, the 102 height and the 96 width, and the R40, R18, Ø16 and Ø28 callouts.
A title block with a title, a drawing number and sheet 1 OF 1.
A note that dimensions are in millimetres.

ReferenceSheet 1

Loading the drawing

Rubrics16

R1
The model shall have an overall bounding size of approximately 264 × 96 × 102 mm (263.96 long, 96 wide, 102 high).
R2
The model shall be an open-top hollow box with a continuous top flange having four corner bolt holes and R10 corner rounding.
R3
The model shall have two circular bearing bosses of R40 on each long side wall, with centres spaced 64 apart.
R4
Each bearing boss shall have a central bore of R14 (Ø28) surrounded by four equally spaced bolt holes.
R5
The bearing bore axes shall lie within 1 mm of 57 above the base and 45 below the top face.
R6
The model shall have a triangular mounting lug at each end projecting 48.98 beyond the 166 long body, with an R18 rounded tip.
R7
Each mounting lug shall contain a Ø16 through hole with a Ø28 counterbore.
R8
The model shall have a volume of approximately 618,019 mm³.
R9
The model shall consist only of planar and cylindrical faces.
R10
The drawing shall contain top, front and isometric views and a side view, in third-angle projection.
R11
The drawing shall dimension the overall length (about 264) and the 166 body length.
R12
The drawing shall dimension the height 102 and the width 96.
R13
The drawing shall carry the callouts R40, R18, Ø16 and Ø28.
R14
The drawing title block shall show a title, a drawing number and sheet 1 OF 1, and the drawing shall state that dimensions are in millimetres.
R15
The model shall be a single solid body in millimetre units saved as Dual-Port_Valve_Housing.prt.
R16
The drawing shall be saved as Dual-Port_Valve_Housing_dwg1.prt with views referencing the Dual-Port_Valve_Housing part.

Gold outputDual-Port_Valve_HousingPRT, STP

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Events17,948

00:00.000AppNX 12

00:00.000Move1483, 342 → 1515, 346

00:00.092Move1516, 347 → 86, 76

00:00.962Click86, 76

00:01.190Move85, 78 → 968, 354

00:02.382Move969, 354 → 970, 354

00:07.158Move919, 337 → 533, 255

00:07.964Click533, 255

00:08.084Move535, 255 → 1129, 827

00:08.944Click1129, 827

00:09.078Move1127, 826 → 978, 357

00:10.220Click978, 357

00:10.336Move977, 357 → 984, 623

00:11.705Move989, 623 → 1203, 639

00:12.148Click1203, 639

00:12.226Move1202, 638 → 1202, 633

00:12.332Click1202, 633

00:12.434Move1202, 633 → 1201, 612

00:13.154Move1201, 612 → 1200, 612

00:13.432Move1199, 612 → 1372, 610

00:14.086Move1372, 611 → 1230, 641

00:14.493Click1230, 641

00:14.574Move1229, 641 → 1228, 640

00:14.634ClickDouble click 1228, 640

00:14.764Move1228, 639 → 1069, 643

00:15.490Click1069, 643

00:15.660ClickDouble click 1069, 643

00:15.926Move1069, 642 → 1180, 310

00:17.626Move1180, 311 → 1141, 317

00:20.494Move1141, 317 → 1136, 318

00:21.068Move1136, 319 → 1177, 320

00:24.910Move1177, 320 → 1214, 308

00:26.442Move1214, 308 → 1157, 386

00:27.058Click1157, 386

00:27.216ClickDouble click 1157, 386

00:27.564Move1157, 386 → 1851, 946

00:28.410Click1851, 946

00:28.559Move1852, 946 → 1224, 946

00:30.012Click1224, 946

00:30.164Move1224, 946 → 1102, 746

Loading events

Narration1,088

00:00
Opened the New dialog in Siemens NX and reviewed the available drawing templates, leaving the filename and folder fields visible.
Start a new NX document using an appropriate template.
00:09
Opened the Choose Directory dialog, browsed folders under the NEW directory, and navigated into the Dual-Port Valve Housing folder before returning to the New dialog view.
Choose or inspect the directory for the new NX document.
00:28
Confirmed the directory choice and created the new model document, which opened in the NX Modeling workspace as model1.prt.
Create a new NX part file.
00:48
Started Create Sketch and displayed the sketch setup dialog with an inferred horizontal reference and Specify Point origin method.
Begin defining a sketch on a selected modeling plane.
00:59
Confirmed the sketch setup, entered the Profile command, and began creating a rectangular profile on the sketch plane.
Create initial sketch geometry for the part.
01:04
Completed the rectangle, opened Geometric Constraints, and left the rectangle selected for constraint assignment.
Constrain the rectangular sketch geometry.
01:08
Opened the Geometric Constraints panel, switched between it and the Sketch window, and resized the panel while the rectangle remained selected for constraint selection.
Prepare to apply geometric constraints to the sketch.
01:16
Switched to Rapid Dimension and left the tool active with prompts to select the first and second objects.
Prepare to add a dimensional constraint to the sketch.
01:36
Kept Rapid Dimension active without selecting geometry.
Continue the dimensional-constraint operation.
01:43
Selected the rectangle geometry, entered 185 and confirmed it, then entered 102 and confirmed it while positioning the dimension annotation.
Set the rectangle dimensions.
01:58
Exited the dimensioning dialog, returned to the Sketch view, and switched to Modeling; the sketch displayed 185 and 102 dimensions and was marked fully constrained.
Finish constraining the sketch and return to modeling.
02:07
Reopened Sketch, started Linear Dimension, selected geometry, and entered 185, leaving the linear-dimension placement active.
Add or edit a linear dimension for the sketch.
02:20
Switched to NX Sketch, edited the active linear dimension field, entered 102, and confirmed the value; the rectangle displayed a 102 vertical dimension while the 185 horizontal dimension remained.
Set the sketch’s vertical linear dimension to 102.
02:32
Confirmed the dimension edit, exited the sketch, and returned to the Modeling workspace; the sketch displayed 185 by 102 dimensions and was fully constrained.
Apply the updated sketch dimension and leave sketch editing.
02:40
Clicked and right-clicked in the Modeling workspace and model history area without a clearly visible resulting command or geometry change.
Inspect or interact with the NX model and feature history.
02:59
Re-entered the sketch, opened the feature context menu, and adjusted the view by scrolling; the sketch dimensions 185 and 102 were visible and the sketch remained fully constrained.
Inspect the sketch feature and its constrained dimensions.
03:05
Opened Rapid Dimension, selected the sketch geometry, and edited the displayed dimension value by entering 96 and confirming it.
Change the selected sketch dimension to 96 using Rapid Dimension.
03:12
Opened the Snipping Tool overlay briefly, then returned to NX; the Rapid Dimension panel remained open with p2 set to 96 and the sketch displayed the updated 96 vertical dimension.
Capture or inspect the updated sketch dimension.
03:32
Scrolled and repositioned the Rapid Dimension window while viewing the constrained rectangular sketch, then clicked in the sketch area.
Inspect or initiate a rapid dimension measurement.
03:37
Returned to the NX sketch window, clicked sketch-related controls, and switched into the Modeling environment.
Exit sketch editing and return to modeling.
03:41
Opened the Extrude command, selected the sketch curves, adjusted the extrusion preview, and entered 102 mm for the end distance.
Create a solid by extruding the constrained rectangular sketch.
03:53
Completed the extrusion operation and manipulated the 3D view around the resulting rectangular solid.
Finalize and inspect the extruded body.
04:07
Reopened the Extrude feature, edited its end-distance field, and entered a value of 10 mm.
Modify the extrusion height.
04:18
Selected the extruded body and opened Create Sketch, then displayed the sketch setup panel for an on-plane sketch with a specified origin point.
Begin creating a new sketch on the modeled body.
04:23
Adjusted the NX Sketch window and selected sketch geometry while the Profile tool remained active.
Inspect or prepare sketch geometry for profile operations.
04:29
Activated Rectangle and dragged across the sketch area to create a large outer rectangle around the existing geometry.
Add an enclosing rectangular profile to the sketch.
04:38
Opened Geometric Constraints, selected sketch geometry, then switched to Rapid Dimension and left it awaiting object selections.
Apply geometric constraints and begin dimensioning the rectangle.
04:50
Selected the rectangle geometry and created a horizontal rapid dimension labeled 206, then left the Rapid Dimension tool active.
Dimension the rectangle width.
05:00
Continued selecting or editing the active dimension input without producing a visible new value.
Continue editing the rectangle dimension.
05:07
Entered whitespace into the active Rapid Dimension input field without changing the visible dimension.
Attempt to edit or confirm the dimension value.
05:14
Clicked in NX and switched to the Rapid Dimension tool, leaving the sketch rectangle visible with its existing 206 dimension.
Prepare to add or edit a sketch dimension.
05:29
Selected the sketch geometry and opened Linear Dimension; selected both objects and positioned the horizontal dimension, showing value 206 mm.
Create a horizontal linear dimension for the sketch geometry.
05:49
Kept the Linear Dimension command active while reviewing the selected horizontal dimension and its 206 mm value.
Review the pending dimension before editing it.
06:09
Entered 190 in the dimension field and pressed Enter, updating the horizontal sketch dimension from 206 mm to 190 mm.
Set the sketch width dimension to 190 mm.
06:28
Returned to the sketch, then opened Rapid Dimension again while the 190 mm horizontal dimension remained visible.
Begin creating another sketch dimension.
06:32
Selected the rectangle’s vertical geometry with Rapid Dimension, displayed a vertical dimension of 119, then entered 102 and pressed Enter; the tool reset to select the next objects.
Set the sketch height dimension to 102.
06:44
Opened the Geometric Constraints panel in NX Sketch and clicked within the sketch while the rectangular profile remained selected and fully constrained.
Review or adjust sketch geometric constraints.
06:52
Exited the sketch view and returned to Modeling, displaying the extruded block in an isometric view.
Move from sketch editing to solid modeling.
06:59
Opened the Extrude feature dialog and selected four curves for the section; kept the start distance at 0 mm and the end distance at 102 mm with preview enabled.
Configure an extrusion from the selected sketch profile.
07:19
Reviewed the Extrude parameters and selected the start-distance field, then dragged within the dialog to activate the inline start-value control.
Prepare to edit the extrusion start distance.
07:28
Continued editing the Extrude dialog with the start-distance control active; the preview remained displayed with Start 0 and End 102 mm.
Set the extrusion limits before applying the feature.
07:48
Typed into the start-distance field, changing the inline start value to 102 and then entering a negative adjustment; clicked the dialog area while the extrusion preview updated to a thin offset slab.
Adjust the extrusion start limit and inspect the resulting preview.
08:02
Selected the lower perimeter edge of the modeled block, leaving it highlighted in the NX viewport.
Select a model edge or feature for subsequent modeling.
08:17
Opened the Unite command, used the selected body as the target, and previewed the resulting united geometry; then initiated sketch creation.
Combine solid bodies and begin creating a sketch.
08:27
Confirmed Create Sketch and entered sketch mode, then activated the Profile tool on the selected sketch plane.
Set up a new sketch and begin drawing its profile.
08:31
Switched from Profile to Rectangle and positioned the rectangle tool over the sketch plane, with coordinate input fields displayed.
Prepare to draw a rectangular sketch profile.
08:44
Placed and sized a large rectangle across most of the sketch plane, leaving its outline active with coordinate fields visible.
Create the rectangular sketch geometry.
09:04
Continued adjusting or reviewing the active rectangle using the on-screen coordinate fields; no additional confirmed geometry or command completion was visible.
Refine the rectangle placement or dimensions.
09:20
Opened the Geometric Constraints dialog and selected sketch geometry to apply additional constraints, leaving the dialog active with the sketch still under-constrained.
Add geometric constraints to the sketch.
09:24
Selected additional sketch geometry in the Geometric Constraints dialog and reduced the displayed remaining constraint count to 2.
Continue constraining the sketch geometry.

09:30
Switched to Rapid Dimension and left the command awaiting selection of the first and second objects.
Add a dimensional constraint to the sketch.
09:34
Activated the Circle tool, positioned the circle center and point in the sketch, and created a small circle near the lower-left area of the rectangular profile.
Create circular sketch geometry.
09:38
Continued positioning the circle and adjusted the sketch view while the Circle command remained active.
Refine the circle's placement in the sketch.
09:44
Switched to Rapid Dimension, selected the circle and nearby sketch geometry, and entered 12 as a dimension value.
Apply a 12-unit dimensional constraint to the circle or its position.
10:00
Opened the Circle tool in NX Sketch and positioned the sketch view while the existing rectangular profile and circle remained visible.
Create or edit a circle in the active sketch.
10:06
Continued positioning the circle center in the sketch, moving the view and leaving the Circle tool active.
Place the circle center within the sketch profile.
10:18
Switched to Rapid Dimension, selected the first object, and began selecting a second object for a sketch dimension.
Add a dimensional constraint between sketch geometry.
10:23
Selected sketch geometry for Rapid Dimension and entered 15, applying a vertical dimension that repositioned the circle relative to the profile.
Constrain the circle location with a 15-unit dimension.
10:31
Used Rapid Dimension with radial measurement and entered 10, enlarging the circle and setting its radius to 10.
Set the circle radius to 10 units.
10:45
Closed the Rapid Dimension interaction and zoomed out to review the constrained sketch, leaving the rectangular profile and enlarged circle visible.
Review the updated sketch geometry and constraints.
10:52
Opened the Rapid Dimension tool in NX, resized and repositioned its dialog, and left it waiting for the first object selection while the sketch view was adjusted.
Prepare Rapid Dimension for applying a sketch constraint.
10:56
Selected the sketch objects for a rapid dimension, positioned the dimension, and edited the displayed value by entering the expression 66/2.
Create and define a dimensional constraint between sketch geometry.
11:07
Confirmed the entered expression and continued reviewing the resulting dimension field, which displayed 33 with the expression 66/2.
Apply the calculated dimension value to the sketch.
11:27
Continued reviewing the active Rapid Dimension dialog and sketch without further confirmed geometry changes.
Inspect the applied sketch dimension and tool state.
11:41
Adjusted the sketch view, switched between the Rapid Dimension dialog and the sketch, and selected the upper-left arc as the first object for another dimension.
Begin another dimensional constraint on the sketch arc.
11:46
Selected the second object, edited the new dimension value from approximately 16.374 to 15, and confirmed the entry.
Set the new sketch dimension to 15.
11:51
Selected sketch geometry in the Geometric Constraints tool and applied a constraint, reducing the displayed remaining constraints from 3 to 2 while switching between the NX Sketch view and tool window.
Apply geometric constraints to reduce remaining sketch degrees of freedom.
11:58
Opened Rapid Dimension, selected sketch references, and repositioned the view to display the resulting dimensions, reducing the remaining constraints from 2 to 1.
Create a dimensional constraint for the sketch.
12:02
Entered 15 for the active Rapid Dimension value and confirmed it, then selected the dimension annotation for further editing or repositioning.
Set the selected sketch dimension to 15.
12:07
Scrolled and dragged across the sketch to adjust or reposition dimension annotations, then left the sketch view with the geometry still under-constrained.
Arrange or refine the sketch dimensions and annotations.
12:23
Displayed the Rapid Dimension panel over the sketch and waited with the first-object selection step active.
Continue adding the remaining dimensional constraint.
12:27
Selected sketch references, entered 15, and confirmed the dimension; the sketch updated to show the right-side offset as 15 and reported that it is fully constrained.
Complete the final dimensional constraint and fully constrain the sketch.
12:33
Switched to NX Sketch, adjusted the view with scrolling, and left the fully constrained rectangular sketch with two circular features visible.
Review the constrained sketch geometry.
12:53
Exited Sketch to Modeling, waited for the model update, and selected Sketch (1) in the Part Navigator.
Return to modeling and select a sketch feature.
12:59
Selected geometry in the modeled part and opened the associated context menu before switching away from the active NX window.
Inspect or access commands for selected model geometry.
13:18
Opened Sketch (3) from Modeling, viewed its fully constrained rectangular profile, then returned to Modeling and selected the lower model region.
Inspect Sketch (3) and return to the solid model.
13:25
Opened Sketch (3) in Sketch mode and selected the rectangular face/profile, leaving the large region highlighted red before continuing in the sketch.
Inspect the selected face or sketch region.
13:40
Started Linear Dimension, positioned the dimension annotation, and entered 96, leaving the value active in the dimension field.
Create or edit a vertical sketch dimension.
13:46
Dragged in the Linear Dimension sketch, switched back to Modeling, and opened the Information window showing an update warning about out-of-date sketch references.
Review the model update status and sketch-reference warning.
13:51
Closed the Information window and displayed the 3D model, with the Extrude feature selected in the Part Navigator.
Return to the model view after reviewing the warning.
14:11
Clicked and dragged on the model to adjust the view or selection, leaving the rectangular solid displayed without the previous red highlight.
Inspect or manipulate the 3D model view.
14:28
Selected the Unite feature in the Part Navigator, then clicked Sketch in Task Environment to begin creating or editing a sketch.
Enter a sketching workflow on the modeled part.
14:44
Opened Create Sketch, accepted the sketch setup, entered the sketch environment, and activated the Profile tool.
Create a new sketch on the selected model face.
14:49
Activated Rectangle, dragged across the sketch face to define a large rectangle, and left the rectangle tool active for another point.
Create rectangular sketch geometry on the model face.
15:05
Switched to NX Sketch and selected a horizontal rectangle edge while the Geometric Constraints panel remained open.
Apply or prepare a geometric constraint to the sketch geometry.
15:09
Selected additional sketch geometry through the Geometric Constraints panel, reducing the displayed constraint requirement from three to two.
Continue constraining the rectangular sketch.
15:17
Opened Rapid Dimension and selected the rectangle’s opposing edges as the first and second objects, displaying a vertical dimension preview.
Create a dimensional constraint for the sketch.
15:21
Placed the rapid dimension, edited its value field to 66, and confirmed the dimension; the sketch became fully constrained and displayed dimensions 148 and 66.
Finish constraining the rectangular sketch with dimensional values.
15:27
Reviewed the fully constrained sketch while the Rapid Dimension panel and dimension fields remained visible; no substantive geometry change occurred.
Review the completed sketch constraints.
15:47
Continued reviewing the fully constrained sketch and Rapid Dimension panel, then became idle without further visible changes.
Maintain or inspect the completed constraint state.
16:02
Edited the rapid-dimension value to 166 and confirmed it, updating the sketch’s horizontal dimension from 148 to 166 while leaving the 66 dimension visible.
Update the sketch dimension.
16:08
Exited the sketch to the Modeling environment and adjusted the NX window, revealing the updated solid model.
Return to modeling and inspect the updated part.
16:17
Opened the Extrude command, selected the section geometry and extrusion vector, and adjusted the start and end distance controls while previewing the extrusion.
Define an extrusion feature from the selected section.
16:37
Continued dragging the extrusion controls to refine the preview, changing the start distance to 9 mm while keeping the end distance at 102 mm.
Refine the extrusion limits.
16:42
Rotated the 3D view with middle-button drags to inspect the active extrusion preview from multiple angles.
Inspect the extrusion preview spatially.
16:47
Finished the extrusion operation and returned to Modeling, producing a raised rectangular feature on top of the solid; opened the Unite menu afterward.
Create the raised solid feature and prepare a Boolean operation.
16:51
Switched between NX Modeling and Subtract windows, resized the NX interface, rotated the 3D view with a middle-button drag, and selected model geometry.
Inspect and orient the model while working with the subtract feature.
16:58
Selected Sketch (1) in the model history and opened it in Sketch mode; resized the NX window and clicked within the sketch workspace.
Open the existing sketch for editing or inspection.
17:07
Activated Linear Dimension, selected the horizontal dimension geometry, and positioned the dimension annotation; left the value field showing p1 = 185 mm while text selection continued.
Create or adjust a horizontal sketch dimension.
17:27
Continued selecting text in the Linear Dimension value field and clicked near the left side of the sketch workspace.
Review or prepare the horizontal dimension value for editing.

Create a 3D solid model and an associated drawing of a cast gearbox housing in millimetres.

Create a Siemens NX dual-port valve housing from constrained sketches and solid features, add holes, blends, patterns, and material properties, then produce and dimension an A2 technical drawing with orthographic, isometric, and sectional views plus populated title-block metadata.