Unigraphics NX Practical Applications of NX MT10050 (Workbook)

Practical Applications of NX Workbook January 2006 MT10050 — NX 4

Publication Number mt10050_w NX 4

Manual History

Manual Revision

Unigraphics Version

Publication Date

Version 15.0

February 1999

Version 16.0

January 2000

Version 17.0

December 2000

Version 18.0

September 2001

Unigraphics NX

September 2002

A

Unigraphics NX 2

September 2003

A

NX 3

November 2004

A

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 Corporation All Rights Reserved. Produced in the United States of America. 2

Practical Applications of NX – Workbook

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Overview Toy Radio Controlled Car The objective of the workbook project is to provide you with an ongoing indication of your comprehension of the course material. The workbook will lead you through a modeling project with high level prompts. Detailed steps will not be present as they are in the student manual. However, feel free to reference the student manual as needed. In this project you will model some of the component parts of a toy car and add them to an assembly. Some of the parts have already been modeled but need to be added to the assembly in the proper orientation. Other parts will require the documentation of a drawing. This project will reinforce your skills of capturing design intent, modeling, assemblies, and drafting.

©UGS Corporation, All Rights Reserved


3

1

Lesson

1

Rear Differential Modeling

Overview The first part to be built for the toy car assembly is the rear differential. This activity will show how a primitive may be used to start the model, then new features may be used to add detail to the part.



1-1


1

Design Intent The design intent of the rear differential is to hold the rear drive gear and the rear axle. The bosses that protrude from the sides to support the axle need to be centered on the central square section, and should act as one feature should the part change. The rear differential also must have the ability to rotate to a certain degree, allowing the rear wheels to travel over uneven surfaces. The bosses used to mount the differential therefore are required to be aligned. The walls of the central square section should be of uniform thickness. The rear drive gear will protrude from the top of the differential so that it can mesh with the drive gear from the power source. This means that the bottom of the central square section must accommodate the rear drive gear passing through it. The hole that allows the rear axle to pass through the 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 entire expression 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.

ZC YC XC

Note the orientation of the block with respect to the WCS. Expressions are also stored for the three equations that were keyed in. These expressions store the parameters for the block and allow future editing to change the values defining the block if desired. Step 3:

1-2

Use the Shell operation to remove material from the center of the block. Remove the top face and leave the other faces a thickness of 1.



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Step 4:

1

On each of the 27.5 x 17.5 faces (front and back) create a Boss feature 17.5 in diameter by 21 high. When positioning the first boss use the values blen/2 and bhgt/2 to place the bosses in the center of the face. blen and bhgt are expression names that were created in step 2. Referring to these expression names links the values to the expressions, so that when the value for the expression changes the feature location updates accordingly. When creating the second boss, link its diameter and height to those 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 they move together.

Step 5:

Create edge blends with a radius of 4 along the bottom two long inside edges.

Step 6:

Create edge blends with a radius of 5 along the bottom two long outside edges.



1-3


1

Step 7:

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

It is important to think of what is to be accomplished while using the various tools. A rectangular pocket created from the outside bottom face of the part will take away material upward as desired to create the clearance opening for the gear. Note that the pocket takes material from the blended faces and the bottom. A rectangular pocket created from the inside bottom face would not remove the material from the inside blended faces.

1-4

Step 8:

Create a 5.5 diameter axle clearance Hole through the part. Be sure that the clearance hole is centered in the boss features.

Step 9:

Create Symmetric Offset chamfers with a value of 1 on the outer edges of the hole.



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1

Step 10: Create the mounting bosses. Create the two 5 diameter by 5.5 high mounting bosses centered on the 18 x 17.5 faces. Apply design intent during creation as was done earlier.

Step 11: Save and close the part.



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1

Lesson

2

Rear Differential Assembly

2

Assemblies The purpose of this section is to begin the assembly of the toy car. This assembly will be revisited throughout the course.



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2

Step 1:

Open seedpart_mm save it as ***_assembly_1, where *** represent your initials.

Step 2:

Add the toycar_chassis_pan_1 to the assembly using the BODY reference set.

Step 3:

Add the toycar_rear_diff_1 to the assembly using the BODY reference set. The toycar_rear_diff_1 part is owned by another user and is write protected. It may not be modified and saved, however the assembly file is owned by you and may be modified and saved.

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Step 4:

Mate the differential to the frame by applying the proper mating conditions between the appropriate faces (A to A and B to B).

2

Step 5:

Save and close all parts.



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2

Lesson

3

Rear Axle Modeling and Assembly 3

The rear axle is meant to be driven by the rear drive gear. It has a flat area on a cylindrical body. The rear drive gear and the rear axle are made of a material that allows the drive gear to be pressed onto the axle until its mating flat locks it into the rear axle. The rear wheels are simply pressed onto the rear axle and held in place by friction. The rear drive gear should always remain centered along the length of the axle.



3-1

Rear Axle Modeling and Assembly

Step 1:

Open seedpart_mm save it as ***_rear_axle_1 where *** represent your initials. The second part to be built for the toy car assembly is the rear axle. This activity will reinforce the use of reference features.

Step 2:

Create a Cylinder along the +XC axis with a diameter of 5 and a length of 30. The rear axle has a notch centered along its length with the purpose of keeping the rear drive gear from slipping. A rectangular pocket will be used to create this notch, but first reference features must be created to aid in the placement of the pocket.

3

3-2

Step 3:

Make layer 61 the Work Layer.

Step 4:

Create the first reference feature through the axis of the cylindrical face and through a quadrant point on the top or bottom of one of the circular edges.



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Step 5:

Create the second reference feature tangent to the top of the cylindrical face and perpendicular to the first datum plane. This reference feature will be used as the planar placement face for a rectangular pocket.

3

Step 6:

Create the final reference feature halfway between the two planar faces on the ends of the cylinder. This reference feature will be used to position the pocket in the center of the part regardless of changes in length.

Step 7:

On the datum plane that is tangent to the cylindrical face, create a Rectangular Pocket feature with a value of 10 along the length of 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 with the two centering datum planes.



3-3


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.

Step 10: Save and close the part. Now that some of the component parts have been created for the toy 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 reference set.

3-4



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

Step 14: Save and close all parts.



3-5

3

3

Lesson

4

Left Pinion Modeling and Assembly

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

4



4-1


The left pinion is used to mount and steer the left front wheel. The right and left pinions are attached to the chassis pan by snapping into place. Consider the use of reference features to aid in the creation and/or positioning 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

4-2



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Step 4:

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

4 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 it to be concentric with the last boss. This boss will be used to connect the steering rack.



4-3


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.

4

Step 7:

Create another Boss on offset datum plane with a diameter of 7.5 and a height of 40 and constrain it so that the axis of the cylinder falls on the right edge of the block and is centered in the width of the block. This boss will be used to hold the front spring.

4-4



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Step 8:

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

4 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 the placement face. This last boss should be 7.5 in diameter by 7.5 high. Locate this boss concentric with the last one. The front wheel will snap onto this feature.



4-5


Step 10: Create an edge blend on the placement face edge of the last boss with a radius of 2. This blend will allow ease of front wheel operation.

4

Step 11: Create an edge blend on the other end of the last boss with a radius of 3.75. This blend will allow easier front wheel operation and mounting.

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Step 12: Move the datum plane to layer 61.


4

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 BODY reference set. Step 16: Add the toycar_right_pinion_1 to the assembly using the BODY reference set.



4-7


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

4

Step 18: Save and close all parts.

4-8



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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 to the drive wheels. The power pack should be compact and yet accommodate the gear sets and rack spur gear.

5



5-1


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

5-2



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Step 6:

On layer 22 create a sketch named, s22_front. Define the attachment 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


5-3


Step 10: Activate the sketch named S21_TOP and apply the constraints listed 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 length constraints. The sketch is located in space by applying a collinear constraint between a vertical line and a datum axis and between a horizontal line and a datum axis.

5

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Step 11: Activate the sketch named S22_FRONT and apply the constraints listed below and the dimensions shown in the illustration. There are four horizontal constraints. There are four vertical constraints.

5

(1) — This value should be the name of the expression that controls the extrusion (=60). The name of your expression may be different than that of the illustration. (2) — This should be the name of the expression that controls the overall length in the S21_TOP sketch. The name of your expression may be different.



5-5


Step 12: Apply collinear constraints to locate the sketch as shown below. (1) — The bottom of the sketch is aligned with the bottom of the solid body. (2) — The right side of the sketch is aligned with the right side of the solid body.

5

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

ZC

5

YC XC

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



5-7


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

5

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

5-8



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Step 17: Create a hole through both side flanges with a diameter of 2.5 with its center located a distance of 29.5 up from the bottom edge and set 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 with its center located a distance of 17 up from the bottom edge and set back from the front of the part a distance of 62.5.



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5


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

5


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Lesson

6

Rear Drive Gear Modeling

The rear drive gear takes the power from the power pack and applies it to the 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 between the gear teeth should be equal.

6



6-1


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 drive gear. In this section you will start the construction of the rear drive gear by creating reference features, the center hole, and a sketch to define the tooth profile.

Step 2:

Create a Cylinder with a diameter of 24 and a height of 10.

6

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Step 3:

On layer 61, create a Datum Plane Through face axis of the cylindrical 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 Angle to plane of 90°.

Step 5:

Create a third Datum Plane with an offset of 2 above the second datum plane.

6

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



6-3


Step 6:

Create a hole through the center of the cylinder with a diameter of 5.

Step 7:

Create a sketch named tooth on layer 21. Define the attachment face (1) and horizontal reference (2) direction as shown below.

6

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Step 8:

Create the sketch geometry and constraints as shown below.

Step 9:

Extrude and Subtract the triangular shape from the cylinder to create a groove.

6

This groove is the side of two gear teeth. Step 10: Save and close the part.



6-5

6

Lesson

7

Part and Assembly Editing

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

7



7-1

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 3:

Save the part.

Step 4:

Open ***_assembly_1. If you have mated the axle with the differential correctly, then your model should resemble the illustration below.

7 Step 5:

Close the assembly.



7-3

7

Lesson

8

Rear Drive Gear Completion

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

8



8-1


Step 1:

Open the ***_rear_drive_gear_1 part where *** represent your initials. In this section you will create a pad and apply an instance feature to create the teeth of the gear.

Step 2:

Create a 5 x 10 x 1 rectangular pad on top of the offset plane and center it in the part to form the flat.

8

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Step 3:

On layer 61, create a relative Datum Axis through the center of the cylinder.

Step 4:

Create 24 copies of the extrusion around the Datum Axis at an angle of 360/24.

8



8-3


Step 5:

Create edge blends at the top and bottom of all of the teeth with a radius of .25.

Step 6:

Save and close the part.

8

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Lesson

9

Assembly Completion

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

9



9-1

Assembly Completion

Step 1:

Open ***_assembly_1 where *** represent your initials.

Step 2:

Add the toycar_rear_drive_gear_1 part to the assembly using the BODY reference set and mate the drive gear to the axle by applying two Mate constraints and one Center constraint.

9

9-2



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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



9-3

Assembly Completion

Step 4:

Add the toycar_power_pack_1 to the assembly using the BODY reference set. Mate the power pack to the chassis pan by applying Mate and Align constraints to the faces shown below.

9

9-4



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Assembly Completion

Step 5:

Add the toycar_rack_spur_gear_1 to the assembly the BODY reference set. Mate the spur gear to the assembly by applying a Center constraint and an Align constraint to the faces shown below.

9



9-5

Assembly Completion

Step 6:

Add the toycar_rear_wheel_1 to the assembly using the BODY reference 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 the hole in the wheel.

Step 7:

Repeat the process to add the second rear wheel to the other end of the axle.

9

9-6



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Assembly Completion

Step 8:

Add the toycar_front_spring_1 to the assembly using the Entire Part reference set. Mate the spring to the assembly by applying Align and Center constraints to the corresponding objects shown below (datum plane to planar face, datum axis to cylindrical face). You may have to make layer 61 selectable to see the reference features. After the spring is mated to the assembly, change the reference set to Body.

9



9-7

Assembly Completion

Step 9:

Repeat the process to add the second spring to the other pinion.

9

9-8



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Assembly Completion

Step 10: Add the toycar_front_wheel_1 to the assembly using the BODY reference set. Mate the front wheel to the pinion by applying two Center constraints, one to the spherical faces (A) and one to the cylindrical faces (B).

9



9-9

Assembly Completion

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

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

9

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Assembly Completion


9



9-11

Assembly Completion


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

9

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Assembly Completion

Step 15: Add the toycar_frt_spoiler_1 to the assembly using the BODY reference set. Create a mating condition that positions the tongue (1) of the spoiler into the opening (2) of chassis. The spoiler should be placed all of the way in the opening.

Step 16: Add the toycar_body_1 to the assembly using the BODY reference set.

9



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Assembly Completion

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

9 Step 17: Save and close the part.

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Lesson

10 Rear Differential Drafting

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

10 ©UGS Corporation, All Rights Reserved


10-1

Rear Differential Drafting

In this section you will create a discipline specific single part assembly for drafting purposes. Because of the associative nature of assemblies, changes to the solid model will 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 BODY reference set.

Step 3:

Save the part.

Step 4:

Start the Drafting application and create a new drawing sheet such that the units are metric, the scale is 2/1, the drawing size is A3, and the drawing name is DWG1.

Step 5:

Add the views to the drawing as shown below. Remember to use Orthographic views once the original view is placed to assure proper alignment. Add the views with the Create Centerline option toggled on.

10 10-2



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Step 6:

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

10 ©UGS Corporation, All Rights Reserved


10-3


Step 7:

Dimension the part as shown below. Remember that this part is metric. Try using the Inferred dimension type first. If need be, use the Horizontal, Vertical, Hole, and Radius NOT to center types of dimensions.

The chamfer dimension shown was created by inserting annotation with a leader. If time permits, additional drafting activities may be found in Appendix B. Step 8:


10 10-4



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A

Appendix

A Additional Modeling Projects Overview This appendix contains additional modeling projects to complete the toy car assembly.



A-1

Additional Modeling Projects

A

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

Step 1:

Open seedpart_mm save it as ***_rack_1 where *** represent your 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 the length of the block. This datum plane will be used to locate the central gear tooth.

A-2



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A

Step 4:

Create rounds with a radius of 5 at the four edges of the part to completely round off the edge along the edge that is 10 long.

Step 5:

Create holes with a diameter of 5 through the part and concentric with the rounded ends.

Step 6:

Create a rectangular pad across the 10 width 2.5 high and 2.5 wide, use a 12° taper from the bottom of the pad, and center it on the part.



A-3


A

A-4

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.

Step 9:




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A

Activity — Steering Rack Spur Gear Modeling To 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-5


A

Step 3:

On layer 61, create a Datum Plane Through the face axis of the cylindrical face. This datum plane will be used as the placement face to create the notch on the end of the shaft.

Step 4:

Create a second datum plane through the axis of the cylinder and at an angle of 90° to the first datum plane. This plane will be used to center the notch.

Step 5:

A-6

Create a 5 x 5 x 5 rectangular pocket on the top of the datum plane to make a 5 unit long notch halfway through the cylinder.



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Step 6:

Create a boss with a diameter of 15 and a height of 10 on the opposite end of the cylinder from the notch and make it concentric with the cylinder.

Step 7:

Create a sketch named tooth on layer 21. Define the attachment face (1) and horizontal reference (2) direction as shown below.



A-7

A


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-8



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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 an angle of 360/10.



A-9


A

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


A-10



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A

Activity — Rear Wheel Modeling This activity will challenge you to select and apply the appropriate functionality 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-11


A

A-12

Step 2:

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

Step 3:




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Appendix

B Additional Drafting Projects

B

Overview This appendix contains additional projects to create drawings for parts in the toy car assembly.



B-1

Additional Drafting Projects

Activity — Left Pinion Drawing Create the drawing of the left pinion.

B

B-2



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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.

B

Create the utility symbols and dimensions as shown below.

Step 2:




B-3


Activity — Rear Axle Drawing Create the drawing of the rear drive gear. For previous drawings, the Master Model technique was used to facilitate concurrent engineering when the designer is not the drafter. Should these tasks fall to the same individual there may be no advantage to using the Master Model technique. In this case the drawing may be created in the same part as the model.

B

Step 1:

Open ***_rear_axle_1 where *** represent your initials.

Step 2:

Start the Drafting application and create a new drawing to meet the 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-4



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Step 3:

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

B

Step 4:




B-5


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

B

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Step 1:

Create a Master Model assembly called ***_rear_drive_gear_dwg to facilitate drafting of the toycar_rear_drive_gear_1 part as shown below. The drawing is A3 size, the scale is 4/1.

B

Step 2:




B-7


Activity — Steering Rack Drawing Create the drawing of the steering rack.

B

B-8



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Step 1:

Create a Master Model assembly called ***_rack_dwg to facilitate drafting of the toycar_rack_1 part as shown below. The drawing is A3 size, the scale is 2/1.

B

Step 2:




B-9


Activity — Spur Gear Drawing Complete the drawing for the rack spur gear.

B

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Step 1:

Create a Master Model assembly called ***_rack_spur_gear_dwg to facilitate drafting of the toycar_rack_spur_gear_1 part as shown below. The drawing is A3 size, the scale is 2/1.

B

Step 2:




B-11


Activity — Power Pack Drawing Complete the drawing for the power pack.

B

B-12



mt10050_w NX 4


Step 1:

Create a Master Model assembly called ***_power_pack_dwg to facilitate drafting of the toycar_power_pack_1 part as shown below. The drawing is A3 size, the scale is 1/1.

B

Step 2:




B-13


Activity — Rear Wheel Drawing Complete the drawing for the rear wheel.

B

B-14



mt10050_w NX 4


Step 1:

Create a Master Model assembly called ***_rear_wheel_1_dwg to facilitate drafting of the toycar_rear_wheel_1 part as shown on the next page. The drawing is A3 size, the scale is 1/1.

B

Step 2:




B-15

Unigraphics NX Practical Applications of NX MT10050 (Workbook)

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