Mechanical Engineering Portfolio

Purav Patel-Mechanical Engineering [email protected]

Purav Patel

Mechanical Engineering Design Portfolio

(2nd year Pursuing Bachelors in Mechanical Engineering at New Jersey Institute of Technology)


Index:

Resume…………………………………………………………………………………………3

V-8 Engine Design…………………………………………………………………….4-5

Two-Stage Gear Box Design………………………………………………………..6

Spur Gear Design……………………………………………………………………..7-8

Goal of portfolio:

The goal of this design portfolio is to help you better understand the skills

I have gained throughout the years. The projects in this portfolio were

done on my own free time using design skills I have learned in the class-

room throughout my years at NJIT. Thank you for taking your time to

view this.

*All the designs here you see were modelled in PTC Creo para-

metric.


Project Name: V-8 Engine Project Objective: To design most of the components of the V-8 Engine, and assemble all the components to produce one final prod-uct.

Below shown are some of the engine’s components:

Crank Shaft Piston Head

Fly Wheel Cam Shaft

Connecting Rod


Here we have the final rendered images of the V-8 Engine

This is the final assembly before rendering.


Project Name: Two Stage Gearbox

Project Objective: Design a final assembled gearbox.

Design Steps:

First the 4 spur gears were modelled

then the input and output shafts were designed.

Next the gear box cover was designed

Finally each piece was assembled to form the two stage gearbox.

Results shown below: Rendered final version of the gearbox.

Image of the gearbox without the

outer box Translucent view of the gearbox

Final model before rendering


Project Name: Spur Gear Design Project Objective:Project Objective: To design a Spur Gear using an involute pro-To design a Spur Gear using an involute pro-

file for proper gear meshing. file for proper gear meshing.

Design Steps:

First all the necessary calculations were done using MATLAB

(See next page).

The addendum, dedendum, and root circles were drawn.

Then an involute curve was sketched using the equation of an in-

volute curve.

Using the mirror, and project tool of PTC Creo the first tooth was

shaped.

Lastly the pattern tool was used to create the finished spur gear

shown in the pictures. Wireframe view of Spur Gear.

This image displays the involute curve that was used to

design the gear teeth.

Rendered image of the Spur Gear teeth.


MATLAB code used to calculate gear values. N = 35; %Number of teeth D = 40; %Pitch Diameter

P = N/D; % Pd stands for Diametral Pitch TA = 360/N; % Teeth Angle

rPA = 20; % Pressure Angle in Degrees PA = rPA*(pi/180); %Pressure angle in radians

Db = D*cos(PA) % Base Circle Diameter a = 1/P; % Addendum

DO = D + 2*a % Outside Diameter ht = 2.157/P; % Whole Depth

b = ht - a; % Dedendum DR = D - 2*b % Root Diameter

This is the final rendered image

of the spur gear.

Mechanical Engineering Portfolio

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Transcript of Mechanical Engineering Portfolio