89941134 unigraphics nx practical applications of nx mt10050 workbook

Practical Applications of NX

WorkbookJanuary 2006

MT10050 — NX 4

Publication Numbermt10050_w NX 4

Manual History

ManualRevision

UnigraphicsVersion

PublicationDate

Version 15.0 February 1999Version 16.0 January 2000Version 17.0 December 2000Version 18.0 September 2001Unigraphics NX September 2002

A Unigraphics NX 2 September 2003A NX 3 November 2004A NX 4 January 2006

Proprietary & Restricted Rights Notice

This software and related documentation are proprietary to UGS Corp.

© 2006 UGS Corp. All Rights Reserved.

All trademarks belong to their respective holders.

©2006 UGS CorporationAll Rights Reserved.Produced in the United States of America.

2 Practical Applications of NX – Workbook mt10050_w NX 4

Overview

Toy Radio Controlled CarThe objective of the workbook project is to provide you with an ongoingindication of your comprehension of the course material. The workbook willlead you through a modeling project with high level prompts. Detailed stepswill not be present as they are in the student manual. However, feel free toreference the student manual as needed.

In this project you will model some of the component parts of a toy car andadd them to an assembly. Some of the parts have already been modeled butneed to be added to the assembly in the proper orientation. Other parts willrequire the documentation of a drawing.

This project will reinforce your skills of capturing design intent, modeling,assemblies, and drafting.

©UGS Corporation, All Rights Reserved Practical Applications of NX – Workbook 3

1Lesson

1 Rear Differential Modeling

OverviewThe first part to be built for the toy car assembly is the rear differential. Thisactivity will show how a primitive may be used to start the model, then newfeatures may be used to add detail to the part.

©UGS Corporation, All Rights Reserved Practical Applications of NX – Workbook 1-1

1

Rear Differential Modeling

Design Intent

The design intent of the rear differential is to hold the rear drive gear and therear axle. The bosses that protrude from the sides to support the axle needto be centered on the central square section, and should act as one featureshould the part change. The rear differential also must have the ability torotate to a certain degree, allowing the rear wheels to travel over unevensurfaces. The bosses used to mount the differential therefore are requiredto be aligned. The walls of the central square section should be of uniformthickness. The rear drive gear will protrude from the top of the differential sothat it can mesh with the drive gear from the power source. This means thatthe bottom of the central square section must accommodate the rear drivegear passing through it. The hole that allows the rear axle to pass throughthe part should be centered in the bosses that are provided to support it.

Step 1: Open seedpart_mm and save it as ***_rear_diff_1 where ***represent your initials.

Step 2: Start with a block as shown below. Be sure to enter the entireexpression as the value in the length fields (i.e. blen = 27.50).Locate the block at WCS origin 0,0,0.

The expression names will help in referencing the values later.

XC

ZC

YC

Note the orientation of the block with respect to the WCS.Expressions are also stored for the three equations that were keyedin. These expressions store the parameters for the block and allowfuture editing to change the values defining the block if desired.

Step 3: Use the Shell operation to remove material from the center of theblock. Remove the top face and leave the other faces a thicknessof 1.

1-2 Practical Applications of NX – Workbook ©UGS Corporation, All Rights Reserved mt10050_w NX 4

1


Step 4: On each of the 27.5 x 17.5 faces (front and back) create a Bossfeature 17.5 in diameter by 21 high. When positioning the firstboss use the values blen/2 and bhgt/2 to place the bosses in thecenter of the face.

blen and bhgt are expression names that were created in step2. Referring to these expression names links the values to theexpressions, so that when the value for the expression changes thefeature location updates accordingly.

When creating the second boss, link its diameter and height tothose of the first boss by using the expression names (p values)that were stored during creation of the first boss.

Locate the second boss relative to the first boss to assure that theymove together.

Step 5: Create edge blends with a radius of 4 along the bottom two longinside edges.

Step 6: Create edge blends with a radius of 5 along the bottom two longoutside edges.


1


Step 7: Use a Pocket feature to create a Rectangular opening 18 long by 12wide in the bottom of the part for gear clearance. A depth of 5 forthe pocket should accomplish what is required. Center the pocketin the part using previously created expressions.

It is important to think of what is to be accomplished whileusing the various tools. A rectangular pocket created from theoutside bottom face of the part will take away material upward asdesired to create the clearance opening for the gear. Note that thepocket takes material from the blended faces and the bottom. Arectangular pocket created from the inside bottom face would notremove the material from the inside blended faces.

Step 8: Create a 5.5 diameter axle clearance Hole through the part. Besure that the clearance hole is centered in the boss features.

Step 9: Create Symmetric Offset chamfers with a value of 1 on the outeredges of the hole.


1


Step 10: Create the mounting bosses.

Create the two 5 diameter by 5.5 high mounting bossescentered on the 18 x 17.5 faces. Apply design intent duringcreation as was done earlier.

Step 11: Save and close the part.


2

Lesson

2 Rear Differential Assembly

AssembliesThe purpose of this section is to begin the assembly of the toy car. Thisassembly will be revisited throughout the course.


2

Rear Differential Assembly

Step 1: Open seedpart_mm save it as ***_assembly_1, where *** representyour initials.

Step 2: Add the toycar_chassis_pan_1 to the assembly using the BODYreference set.

Step 3: Add the toycar_rear_diff_1 to the assembly using the BODYreference set.

The toycar_rear_diff_1 part is owned by another user and is writeprotected. It may not be modified and saved, however the assemblyfile is owned by you and may be modified and saved.


2

Rear Differential Assembly

Step 4: Mate the differential to the frame by applying the proper matingconditions between the appropriate faces (A to A and B to B).

Step 5: Save and close all parts.


3

Lesson

3 Rear Axle Modeling and Assembly

The rear axle is meant to be driven by the rear drive gear. It has a flatarea on a cylindrical body. The rear drive gear and the rear axle are madeof a material that allows the drive gear to be pressed onto the axle until itsmating flat locks it into the rear axle. The rear wheels are simply pressedonto the rear axle and held in place by friction. The rear drive gear shouldalways remain centered along the length of the axle.


3

Rear Axle Modeling and Assembly

Step 1: Open seedpart_mm save it as ***_rear_axle_1 where *** representyour initials.

The second part to be built for the toy car assembly is the rearaxle. This activity will reinforce the use of reference features.

Step 2: Create a Cylinder along the +XC axis with a diameter of 5 anda length of 30.

The rear axle has a notch centered along its length with thepurpose of keeping the rear drive gear from slipping. A rectangularpocket will be used to create this notch, but first reference featuresmust be created to aid in the placement of the pocket.

Step 3: Make layer 61 the Work Layer.

Step 4: Create the first reference feature through the axis of the cylindricalface and through a quadrant point on the top or bottom of one ofthe circular edges.


3


Step 5: Create the second reference feature tangent to the top of thecylindrical face and perpendicular to the first datum plane.

This reference feature will be used as the planar placement facefor a rectangular pocket.

Step 6: Create the final reference feature halfway between the two planarfaces on the ends of the cylinder.

This reference feature will be used to position the pocket in thecenter of the part regardless of changes in length.

Step 7: On the datum plane that is tangent to the cylindrical face, createa Rectangular Pocket feature with a value of 10 along the lengthof the cylinder, a value of 5 across its width, and a depth of .5.Position it so that the centerlines of the pocket are collinear withthe two centering datum planes.


3


Step 8: Add chamfers with an offset of 1 to each end of the cylinder.

Step 9: Make layer 1 the Work Layer and make layer 61 Invisible.


Now that some of the component parts have been created for thetoy car it is time to start the assembly.

Step 11: Open ***_assembly_1.

Step 12: Add the ***_rear_axle_1 to the assembly using the BODY referenceset.


3


Step 13: Apply mating conditions so that:

The axle will remain centered to the differential coaxially.

The axle will remain centered to the differential relative toits length.

You will notice that the axle is actually too short for the toycar. Later, you will edit the axis to increase its length. Ifyou created the mating conditions correctly, the axle willstay in the correct orientation.



4

Lesson

4 Left Pinion Modeling andAssembly

The next part to build for the toy car assembly is the left pinion. This activitywill reinforce the use of modeling features.


4

Left Pinion Modeling and Assembly

The left pinion is used to mount and steer the left front wheel. The right andleft pinions are attached to the chassis pan by snapping into place.

Consider the use of reference features to aid in the creation and/orpositioning methods.

Step 1: Open seedpart_mm save it as ***_left_pinion_1 where ***represent your initials.

Step 2: Create a block 25 long by 7.5 deep by 10 high.

Step 3: Create a center plane to aid in the positioning of objects.


4


Step 4: Create a Boss on the top face of the block with a diameter of 7.5and a height of 5. Position it so that it is centered along the widthof the block and tangent to the end as shown.

Step 5: Create another Boss on the top face of the previously created boss.The boss is to have a diameter of 5 and a height of 10. Constrain itto be concentric with the last boss.

This boss will be used to connect the steering rack.


4


Step 6: Create a datum plane offset 2.5 below the bottom face of the solid.

This plane will be used as the placement face for a boss.

Step 7: Create another Boss on offset datum plane with a diameter of 7.5and a height of 40 and constrain it so that the axis of the cylinderfalls on the right edge of the block and is centered in the width ofthe block.

This boss will be used to hold the front spring.


4


Step 8: Using the center datum plane create a boss with a diameter of 5and a height of 30. Locate the boss a distance of 5 from the bottomof the block, and so that the boss stays centered on the axis of themounting/spring feature (1).

HINT: A datum axis may be useful to help center the boss.

Step 9: Create another boss using the planar face of the last boss as theplacement face. This last boss should be 7.5 in diameter by 7.5high. Locate this boss concentric with the last one.

The front wheel will snap onto this feature.


4


Step 10: Create an edge blend on the placement face edge of the last bosswith a radius of 2.

This blend will allow ease of front wheel operation.

Step 11: Create an edge blend on the other end of the last boss with aradius of 3.75.

This blend will allow easier front wheel operation and mounting.


4


Step 12: Move the datum plane to layer 61.


Update the assembly to reflect the new parts.

Step 14: Open ***_assembly_1 where *** represent your initials.

Step 15: Add the toycar_left_pinion_1 to the assembly using the BODYreference set.

Step 16: Add the toycar_right_pinion_1 to the assembly using the BODYreference set.


4


Step 17: Mate both pinions by creating a center constraint between the faceslabeled A and a mating constraint between the faces labeled B.



5

Lesson

5 Power Pack Sketching

The power pack is actually the housing for the electronics and radio receiver.This housing also contains gear sets that would connect the electric motor tothe drive wheels. The power pack should be compact and yet accommodatethe gear sets and rack spur gear.


5

Power Pack Sketching

This section will reinforce your freehand sketching and constraining skills.In this activity you will create two profiles that represent the shape of thepower pack.

Step 1: Open seedpart_mm save it as ***_power_pack_1 where ***represent your initials.

Step 2: On layer 21 create a sketch named, s21_top, on the XC-YC plane.

Step 3: Freehand sketch a shape similar to the one shown below.

Step 4: On layer 1 extrude the profile up a distance of 60.

Step 5: Move the reference features to layer 61.


5


Step 6: On layer 22 create a sketch named, s22_front. Define theattachment face (1) and horizontal reference (2) as shown below.

Step 7: Make layers 1 and 21 invisible.

Step 8: Freehand sketch a shape similar to the one shown below.

Step 9: Save the part.


5


Step 10: Activate the sketch named S21_TOP and apply the constraintslisted below and the dimensions shown in the illustration.

There are four horizontal constraints.

There are two vertical constraints.

There are two pairs of horizontal lines that have equal lengthconstraints.

The sketch is located in space by applying a collinear constraintbetween a vertical line and a datum axis and between ahorizontal line and a datum axis.


5


Step 11: Activate the sketch named S22_FRONT and apply the constraintslisted below and the dimensions shown in the illustration.

There are four horizontal constraints.

There are four vertical constraints.

(1) — This value should be the name of the expression that controlsthe extrusion (=60). The name of your expression may be differentthan that of the illustration.

(2) — This should be the name of the expression that controlsthe overall length in the S21_TOP sketch. The name of yourexpression may be different.


5


Step 12: Apply collinear constraints to locate the sketch as shown below.

(1) — The bottom of the sketch is aligned with the bottom of thesolid body.

(2) — The right side of the sketch is aligned with the right side ofthe solid body.


5


Step 13: Extrude the FRONT sketch across the solid body (+YC). Apply aparametric value so that if the solid body changes the extrusionwill update with it. Use the intersect boolean type to get aresultant shape that is the shared area of the extrusions.

XC

ZC

YC

Step 14: Create a shell with a thickness of 2 removing the three facesshown below.


5


Step 15: Create a hole through both side flanges with a diameter of 15 withits center located on the bottom edge and set back from the front ofthe part a distance of 20.

Step 16: Create a hole through both side flanges with a diameter of 2.5 withits center located a distance of 17 up from the bottom edge and setback from the front of the part a distance of 27.


5


Step 17: Create a hole through both side flanges with a diameter of 2.5 withits center located a distance of 29.5 up from the bottom edge andset back from the front of the part a distance of 40.

Step 18: Create a hole through both side flanges with a diameter of 2.5 withits center located a distance of 17 up from the bottom edge and setback from the front of the part a distance of 62.5.


5


Step 19: Create a hole through the back side with a diameter of 6 withits center located a distance of 21 up from the bottom edge andcentered in the rear face.



6

Lesson

6 Rear Drive Gear Modeling

The rear drive gear takes the power from the power pack and applies it tothe rear axle so that the wheels turn. As mentioned in the rear axle activity,the two parts have matching flats to keep the gear from spinning on the axle.Each of the gear teeth should be the same profile, and the spacing betweenthe gear teeth should be equal.


6

Rear Drive Gear Modeling

Step 1: Open seedpart_mm save it as ***_rear_drive_gear_1 where ***represent your initials.

The next part to be built for the toy car assembly is the rear drivegear. In this section you will start the construction of the reardrive gear by creating reference features, the center hole, and asketch to define the tooth profile.

Step 2: Create a Cylinder with a diameter of 24 and a height of 10.


6


Step 3: On layer 61, create a Datum Plane Through face axis of thecylindrical face.

This datum plane will be used to locate a central gear tooth.

Step 4: Create a second Datum Plane Through face axis and at an Angleto plane of 90°.

Step 5: Create a third Datum Plane with an offset of 2 above the seconddatum plane.

This plane will be the planar placement face for a rectangular padthat will form the flat to match the one on the rear axle.


6


Step 6: Create a hole through the center of the cylinder with a diameterof 5.

Step 7: Create a sketch named tooth on layer 21. Define the attachmentface (1) and horizontal reference (2) direction as shown below.


6


Step 8: Create the sketch geometry and constraints as shown below.

Step 9: Extrude and Subtract the triangular shape from the cylinder tocreate a groove.

This groove is the side of two gear teeth.



7

Lesson

7 Part and Assembly Editing

The assembly process quite often will show problems with the design. In thiscase the rear axle was found to be too short to serve its purpose. Parametricmodeling allows for parts to be easily modified.


7

Part and Assembly Editing

Step 1: Open ***_rear_axle_1.

Step 2: Change the length of the cylinder feature from 30 to 195.


Step 4: Open ***_assembly_1.

If you have mated the axle with the differential correctly,then your model should resemble the illustration below.

Step 5: Close the assembly.


8

Lesson

8 Rear Drive Gear Completion

Use your newly acquired modeling techniques to complete the solid modelof the rear drive gear.


8

Rear Drive Gear Completion

Step 1: Open the ***_rear_drive_gear_1 part where *** represent yourinitials.

In this section you will create a pad and apply an instance featureto create the teeth of the gear.

Step 2: Create a 5 x 10 x 1 rectangular pad on top of the offset plane andcenter it in the part to form the flat.


8


Step 3: On layer 61, create a relative Datum Axis through the center ofthe cylinder.

Step 4: Create 24 copies of the extrusion around the Datum Axis at anangle of 360/24.


8


Step 5: Create edge blends at the top and bottom of all of the teeth with aradius of .25.



9

Lesson

9 Assembly Completion

In this section you will complete the assembly of the toy car.


9

Assembly Completion

Step 1: Open ***_assembly_1 where *** represent your initials.

Step 2: Add the toycar_rear_drive_gear_1 part to the assembly usingthe BODY reference set and mate the drive gear to the axle byapplying two Mate constraints and one Center constraint.


9

Assembly Completion

Step 3: Add the toycar_rack_1 part to the assembly using original layers.

Mate the rack to the 2 pinions, in the orientation illustrated below,by applying two Center constraints and a Mate constraint.


9

Assembly Completion

Step 4: Add the toycar_power_pack_1 to the assembly using the BODYreference set.

Mate the power pack to the chassis pan by applying Mate andAlign constraints to the faces shown below.


9

Assembly Completion

Step 5: Add the toycar_rack_spur_gear_1 to the assembly the BODYreference set.

Mate the spur gear to the assembly by applying a Center constraintand an Align constraint to the faces shown below.


9

Assembly Completion

Step 6: Add the toycar_rear_wheel_1 to the assembly using the BODYreference set.

Mate the wheel to the axle with a Center and a Mate constraint.The planar face on the axle (1) is to be mated to the bottom of thehole in the wheel.

Step 7: Repeat the process to add the second rear wheel to the other endof the axle.


9

Assembly Completion

Step 8: Add the toycar_front_spring_1 to the assembly using the EntirePart reference set.

Mate the spring to the assembly by applying Align and Centerconstraints to the corresponding objects shown below (datum planeto planar face, datum axis to cylindrical face).

You may have to make layer 61 selectable to see thereference features.

After the spring is mated to the assembly, change the referenceset to Body.


9

Assembly Completion

Step 9: Repeat the process to add the second spring to the other pinion.


9

Assembly Completion

Step 10: Add the toycar_front_wheel_1 to the assembly using the BODYreference set.

Mate the front wheel to the pinion by applying two Centerconstraints, one to the spherical faces (A) and one to the cylindricalfaces (B).


9

Assembly Completion

Step 11: Repeat the process to add the second front wheel to the rightpinion.

Step 12: Add the toycar_gear_set_1 to the assembly using the BODYreference set. Create a mating condition that will locate the axleend (1) in the hole (2) of the power pack frame.


9

Assembly Completion



9

Assembly Completion


The graphic below shows the car from the rear with the threegear sets in place.


9

Assembly Completion

Step 15: Add the toycar_frt_spoiler_1 to the assembly using the BODYreference set.

Create a mating condition that positions the tongue (1) of thespoiler into the opening (2) of chassis. The spoiler should be placedall of the way in the opening.

Step 16: Add the toycar_body_1 to the assembly using the BODY referenceset.


9

Assembly Completion

Mate the body to the chassis by applying a Center constraint tothe two faces labeled A and an Align constraint to the two edgeslabeled B. Back right wheel not shown for clarity.



10

Lesson

10 Rear Differential Drafting

The next step in the rear differential process is to create a drawing of the reardifferential in the master model assembly.


10

Rear Differential Drafting

In this section you will create a discipline specific single part assembly fordrafting purposes.

Because of the associative nature of assemblies, changes to the solid modelwill update its depiction in the discipline specific single part assemblies.

The downstream application that will be used in this example is Drafting.Other discipline specific assemblies could be created to support analysis,manufacturing, etc.

Step 1: Open seedpart_mm save it as ***_rear_diff_1_dwg where ***represent your initials.

Step 2: Add the toycar_rear_diff_1 part to the assembly using the BODYreference set.


Step 4: Start the Drafting application and create a new drawing sheetsuch that the units are metric, the scale is 2/1, the drawing size isA3, and the drawing name is DWG1.

Step 5: Add the views to the drawing as shown below. Remember to useOrthographic views once the original view is placed to assureproper alignment. Add the views with the Create Centerlineoption toggled on.


10



The next step is to add annotation to the drawing to define thepart’s size.


10


Step 7: Dimension the part as shown below. Remember that this part ismetric. Try using the Inferred dimension type first. If need be, usethe Horizontal, Vertical, Hole, and Radius NOT to center typesof dimensions.

The chamfer dimension shown was created by insertingannotation with a leader.

If time permits, additional drafting activities may be found inAppendix B.



AAppendix

A Additional Modeling Projects

OverviewThis appendix contains additional modeling projects to complete the toy carassembly.

©UGS Corporation, All Rights Reserved Practical Applications of NX – Workbook A-1

A

Additional Modeling Projects

Activity — Steering Rack ModelingThis activity will reinforce the application of a rectangular instance array.

Step 1: Open seedpart_mm save it as ***_rack_1 where *** representyour initials.

Step 2: Create a block 100 long by 3.75 high by 10 deep.

Step 3: On layer 61, create a Center Datum Plane halfway along thelength of the block.

This datum plane will be used to locate the central gear tooth.

A-2 Practical Applications of NX – Workbook ©UGS Corporation, All Rights Reserved mt10050_w NX 4

A


Step 4: Create rounds with a radius of 5 at the four edges of the part tocompletely round off the edge along the edge that is 10 long.

Step 5: Create holes with a diameter of 5 through the part and concentricwith the rounded ends.

Step 6: Create a rectangular pad across the 10 width 2.5 high and 2.5wide, use a 12° taper from the bottom of the pad, and center iton the part.


A


Step 7: Create 9 instances of the pad along the top face in each direction(total 17), 4.5 apart.

Step 8: Create .75 radius rounds and fillets on the long edges of each copy(all instances) of the pad.



A


Activity — Steering Rack Spur Gear ModelingTo create this part you will have to apply the following functionality: cylinder,boss, reference features, pocket, sketching, swept body, and instance array.

Step 1: Open seedpart_mm save it as ***_rack_spur_gear_1 where ***represent your initials.

Step 2: Create a Cylinder with a diameter of 5 and a height of 75.


A


Step 3: On layer 61, create a Datum Plane Through the face axis of thecylindrical face.

This datum plane will be used as the placement face to create thenotch on the end of the shaft.

Step 4: Create a second datum plane through the axis of the cylinder andat an angle of 90° to the first datum plane.

This plane will be used to center the notch.

Step 5: Create a 5 x 5 x 5 rectangular pocket on the top of the datum planeto make a 5 unit long notch halfway through the cylinder.


A


Step 6: Create a boss with a diameter of 15 and a height of 10 on theopposite end of the cylinder from the notch and make it concentricwith the cylinder.

Step 7: Create a sketch named tooth on layer 21. Define the attachmentface (1) and horizontal reference (2) direction as shown below.


A


Step 8: Create the sketch geometry and constraints as shown below.

Step 9: Extrude and Subtract the triangular shape to create a groove.

This groove is the side of two gear teeth.


A


Step 10: Create a relative Datum Axis through the center of the cylinder.

Step 11: Create 10 copies of the extrusion around the Datum Axis at anangle of 360/10.


A


Step 12: Create fillets and rounds at the top and bottom of all of the teethwith a radius of .75.



A


Activity — Rear Wheel ModelingThis activity will challenge you to select and apply the appropriatefunctionality to create a parametric solid body of the rear wheel.

Step 1: Open seedpart_mm save it as ***_rear_wheel_1 where ***represent your initials.


A


Step 2: Create a model of the rear wheel based on the drawing attached.



B

Appendix

B Additional Drafting Projects

OverviewThis appendix contains additional projects to create drawings for parts inthe toy car assembly.

©UGS Corporation, All Rights Reserved Practical Applications of NX – Workbook B-1

B


Step 1: Create a Master Model assembly called ***_left_pinion_dwg.

Add the toycar_left_pinion_1 part to the assembly.

Create a drawing to the following specifications:Drawing units are Millimeters,Drawing size is A3 size,Scale is 2/1.

Create the utility symbols and dimensions as shown below.



B


Activity — Rear Axle DrawingCreate the drawing of the rear drive gear.

For previous drawings, the Master Model technique was used to facilitateconcurrent engineering when the designer is not the drafter. Should thesetasks fall to the same individual there may be no advantage to using theMaster Model technique. In this case the drawing may be created in thesame part as the model.

Step 1: Open ***_rear_axle_1 where *** represent your initials.

Step 2: Start the Drafting application and create a new drawing to meetthe following specifications:

the drawing units are in Millimeters.

the drawing size is A3.

the drawing scale is 2/1.

the drawing name is DWG1.


B


Step 3: Add the views, utility symbols, and dimensions as shown below.



B


Activity — Rear Drive Gear DrawingCreate the drawing of the rear drive gear.


B


Step 1: Create a Master Model assembly called ***_rear_drive_gear_dwgto facilitate drafting of the toycar_rear_drive_gear_1 part asshown below. The drawing is A3 size, the scale is 4/1.



B


Activity — Steering Rack DrawingCreate the drawing of the steering rack.


B


Step 1: Create a Master Model assembly called ***_rack_dwg to facilitatedrafting of the toycar_rack_1 part as shown below. The drawing isA3 size, the scale is 2/1.



B


Activity — Spur Gear DrawingComplete the drawing for the rack spur gear.


B


Step 1: Create a Master Model assembly called ***_rack_spur_gear_dwgto facilitate drafting of the toycar_rack_spur_gear_1 part asshown below. The drawing is A3 size, the scale is 2/1.



B


Activity — Power Pack DrawingComplete the drawing for the power pack.


B


Step 1: Create a Master Model assembly called ***_power_pack_dwg tofacilitate drafting of the toycar_power_pack_1 part as shownbelow. The drawing is A3 size, the scale is 1/1.



B


Activity — Rear Wheel DrawingComplete the drawing for the rear wheel.


B


Step 1: Create a Master Model assembly called ***_rear_wheel_1_dwg tofacilitate drafting of the toycar_rear_wheel_1 part as shown onthe next page. The drawing is A3 size, the scale is 1/1.



89941134 unigraphics nx practical applications of nx mt10050 workbook

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