Advanced Engineering Drawing
Directions for Mechanical Drawing Assignments
Working Drawings
Produce a complete set of working drawings including assembly drawing(s), detail drawings, and Parts List.
Select and draw the necessary views to show all of the parts and all of the details. Add dimensions and
notes.
Figure 14.64
Machinist’s Clamp
Working Drawings
Produce a complete set of working drawings including assembly drawing(s), detail drawings, and Parts List.
Select and draw the necessary views to show all of the parts and all of the details. Add dimensions and
notes.
Figure 14.67
Tool Post
Working Drawings: Tolerance Problem (Metric)
Produce a complete set of working drawings including assembly drawing(s), detail drawings, and Parts List
for the given problem. Select and draw the necessary views to show all of the parts and all of the details.
Add the dimensions including the tolerance dimensions.
Figure 14.68
Belt Tightener
Part 7 in Part 2: Locational Interference Fit (ISO Symbol H7/p6) 26mm
Part 5 in Part 7: Free Running Fit (ISO Symbol H9/d9) 19mm
Part 5 in Part 1: Sliding Fit (ISO Symbol H7/g6) 22mm
Part 5 in Part 1: Sliding Fit (ISO Symbol H7/g6) 16mm
Part 6 in Part 1: Free Running Fit (ISO Symbol H9/d9) 16mm
Part 3 in Part 1: Sliding Fit (ISO Symbol H7/g6) 70mm
Calculate the required tolerances for the specified parts
Set all tolerance dimensions to three decimal place accuracy (0.000)
Show all calculations on Engineering Paper
Working Drawings: Tolerance Problem (Metric)
Produce a complete set of working drawings including assembly drawing(s), detail drawings, and Parts List
for the given problem. Select and draw the necessary views to show all of the parts and all of the details.
Add the dimensions including the tolerance dimensions.
Figure 14.66
Drill Jig
Part 2 on Part 3: Loose Running Fit (ISO Symbol H11/c11) 10mm
Part 5 in Part 2: Interference Fit-Medium Drive Fit (ISO Symbol H7/s6) 3mm
Part 5 in Part 3: Interference Fit-Medium Drive Fit (ISO Symbol H7/s6) 3mm
Part 4 in Part 1: Interference Fit-Force Fit (ISO Symbol H7/u6) 12mm
Calculate the required tolerances for the specified parts
Set all tolerance dimensions to three decimal place accuracy (0.000)
Show all calculations on Engineering Paper
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Advanced Engineering Drawing
Directions for Mechanical Drawing Assignments
Gear Calculations
Complete the missing information of the gear train problems. Show all calculations using Engineering
Paper to record all work. Be sure to show all formulas used.
Gear Calculations #1
Gear Calculations #2
Gear Calculations #3
Gear Drawings
Gear Problem #1: QTC Quality Transmission Components, SSG Ground Spur Gear #SSG1-15
Use the Internet to find the QTC Quality Transmission Components web site (http://www.qtcgears.com).
Locate and print the data for a SSG Ground Spur Gear #SSG1-15.
Download the DWG CAD file and using the gear data, prepare a working drawing of the spur gear. Draw a
complete front view and a top/side view (in full section) by modifying the SSG1-15 CAD drawing. Scale
the drawing using a scale of 1=4.
Add the given dimensions to the gear as shown in the S1 diagram.
Add the gear specifications for the SSG Ground Spur Gears given in the online specifications section.
Add notes: All chamfers are 12.7 x 45 degrees unless noted otherwise. All fillets are 12.7R unless noted
otherwise.
Tooth Form: 20 degrees
Diametral Pitch (P) = 1
Material: S45C
Bore: 6 (H7)
Hub diameter: 12
Overall Length: 18
Pitch Diameter (D) = 15
Number of Teeth (N)= 15
Face Width: 8
Shape: S-1
Hub Projection: 10
Gear Problem #2: Boston Spur Gear (#NL20B-09872)
Use the Internet to find the Boston Spur Gear web site. Locate and print the data for the #NL20B-09872
Spur Gear.
Using the gear data, prepare a working drawing of the NL20B-09872 spur gear. Draw a complete front
view showing complete detailed gear teeth and a top/side view (in full section).
Add the given dimensions to the gear as shown in the gear diagram. Add notes to include company name,
gear name and catalog number, gear specifications, and style designation.
Tooth Form: 14.5 degrees
Diametral Pitch (P) = 4
Material: Steel
Bore: 1.125
Hub diameter: 4.27
Overall Length: (2 + Hub Projection)
Pitch Diameter (D) = 5.00
Number of Teeth (N) = 20
Face Width: 2
Web Style: A
Hub Projection: 0.88
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Advanced Engineering Drawing
Directions for Mechanical Drawing Assignments
Gear Problem #1: Meshing Boston Spur Gears
Use the Internet to find the Boston Spur Gear web site. Locate and print the data for the meshing Spur
Gears.
Using the gear data, prepare a working drawing of the meshing Boston spur gears. Draw a complete front
view and a top/side view (in full section).
Add the given dimensions to the gears as shown in the gear diagram. Add notes to include company name,
gear names and catalog numbers, gear specifications, and style designation.
Gear Data:
Boston Spur Gear (#NL24B-10484)
Tooth form: 14.5 degrees
Pitch Diameter (D) = 6
Diametral Pitch (P) = 4
Number of Teeth (N) = 24
Material: Cast Iron
Face Width: 2
Bore: 1.125
Web Style: A
Hub diameter: 3.50
Hub Projection: 1.50
Overall Length: 2 + Hub Projection
Pinion Data:
Boston Spur Gear (#NL16B-09868)
Tooth form: 14.5 degrees
Pitch Diameter (D) = 4
Diametral Pitch (P) = 4
Number of Teeth (N) = 16
Material: Steel Hardened
Face Width: 2
Bore: 1.125
Web Style: A
Hub diameter: 3.27
Hub Projection: 0.88
Overall Length: 2 + Hub Projection
Gear Problem #1: Meshing Boston Bevel Gears
Use the Internet to find the Boston Spur Gear web site. Locate and print the data for the PA528Y-G 12424
and PA528Y-P 12426 bevel gears.
Using the gear data, prepare a working drawing of the bevel gears. Draw a complete front view in full
section.
Add the given dimensions to the gears as shown in the gear diagram. Add notes to include company name,
gear names and catalog numbers, gear specifications, and style designation.
Gear Data:
Tooth form: 20 degrees
Pitch Diameter (D) = 5.000
Diametral Pitch (P) = 8
Number of Teeth (N) = 40
Material: Cast Iron
Face: .83
Bore: 1
Hub diameter: 3
Hub Projection: 1.25
Mounting Distance: 2.875
Dimension (D): 1.850
Catalog Number: PA528Y-G 12424
Pinion Data:
Tooth form: 20 degrees
Pitch Diameter (D) = 2.500
Diametral Pitch (P) = 8
Number of Teeth (N) = 20
Material: Cast Iron
Face: .83
Bore: 0.875
Hub diameter: 2.12
Hub Projection: 1.41
Mounting Distance: 4.000
Dimension (D): 2.290
Catalog Number: PA528Y-P 12426
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Advanced Engineering Drawing
Directions for Mechanical Drawing Assignments
Cam Drawings
CAM Problem #1: Displacement Diagrams
Draw the complete Displacement Diagrams for the given Cam Problems.
Uniform Velocity Cam
Problem #1:
Description of Motion: Motion is to be unmodified straight line and uniform velocity which will
give the follower a rise of 1.50" in 180 degrees and a fall in 180 degrees. Base circle is 3”
diameter.
Modified Uniform Velocity Cam Problem #1
Description of Motion:: Motion is to be modified straight line and uniform velocity whose radii
are equal to one half the rise of the follower and will give the follower a rise of 1.50" in 120
degrees, dwell 60 degrees, fall in 90 degrees, and dwell in 90 degrees. Base circle is 3” diameter.
Harmonic Motion Cam
Problem #1
Description of Motion: Motion is to be Harmonic and will give the follower a rise of 2" in 180
degrees and a fall in 180 degrees. Base circle is 4” diameter.
Uniform Acceleration Cam
Problem #1
Description of Motion: Motion is to be uniform acceleration and will give the follower a rise of 2"
in 180 degrees and a fall in 180 degrees. Base circle is 4” diameter.
CAM Problem #2:
Construct a complete working drawing of a Cam defined in CAM Problem #1. Include a front view and a
side view of the cam complete with all dimensions. Add the Displacement Diagram and a table with the
Cam Dimensions. Select a Cam follower and construct a follower detail including two views and
dimensions.
Direction of Rotation: Clockwise
Plate thickness: 0.50”
Hub diameter: 1.50”
Hub extension (both sides): 0.50”
Shaft diameter: 0.50”
Base circle: 3”
Follower type: Pointed
Portfolio
Print out all required drawings on 8 ½ x 11 paper and 18 x 24 paper.
Drawings will be arranged and bound together either with staples, hole punched for a three ring
binder, pocket portfolio, or hole punched for metal fasteners.
A front and back cover sheet is required. The front cover sheet is to have a border only and is to
be titled with the course name and students name. Artwork can be added and is optional.
The progress report and all required calculations will be included in the portfolio.
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