1) Learn about CAM/CAD/CAE

Our first task was to learn the differences between CAD/CAM/CAE and the different types of projections, fits and GD and T definitions.

CAD (COMPUTER AIDED DESIGN)

Mechanical design engineering can be referred as to create design of mechanical devices and equipment's. It also includes to improve or create the design of manufacturing processes or systems. Computer-Aided Design (CAD) refers to the use of computer software to create, modify, analyze, or optimize designs. It is widely used in industries such as engineering, architecture, and manufacturing to produce detailed 2D or 3D models of physical objects. The CAD software we are working is known as Fusion 360. Fusion 360 is a cloud-based 3D CAD,It integrates design, engineering, simulation, and manufacturing tools into a single platform, making it ideal for product development.Fusion 360 allows users to create parametric designs, run simulations, generate tool paths for CNC machining, and collaborate with others in real-time. It is known for its versatility, offering tools for industrial design, mechanical engineering, and even electronics design.

CAM (COMPUTER AIDED MANUFACTURING)

Computer-Aided Manufacturing (CAM) is the use of software and computercontrolled machinery to automate and enhance the manufacturing process. CAM software takes designs created in CAD programs and generates the tool paths, instructions, and code required to operate machines such as CNC mills, lathes, and 3D printers CAM is widely used in industries like automotive, aerospace, and consumer products, allowing for faster production cycles, complex geometries, and optimized material usage.

CAE (COMPUTER AIDED ENGINEERING)

Computer-Aided Engineering (CAE) refers to the use of computer software to simulate and analyze the performance of products under real-world conditions, such as stress, heat, and fluid flow. CAE tools enable engineers to test designs virtually, identify potential issues, and optimize performance before physical prototypes are made. CAE reduces development costs, shortens product cycles, and enhances innovation by allowing for iterative design improvements. It is widely used in industries like automotive, aerospace, and civil engineering.

2) Drafting Drawings.

We were assinged the task of using a mini-drafter and draw the drawings as given in the Google docs.

Level-2 Sierpenski Triangle

Sierpenski triangle is a triangular pattern formed by making a triangle inside a larger triangle by joining the the midpoints of each side. As the triangle number increases the level of the Sierpenski triangle increases too. The Sierpiński triangle, also called the Sierpiński gasket or Sierpiński sieve, i s a fractal with the overall shape of an equilateral triangle, subdivided recursively into smaller equilateral triangles

3) 3D Drafting

Task 1

Creating a 3D model of an Allen key of given dimensions (Lenght: 55mm, width: 20 mm and size: 5mm) in Fusion 360

Task 2

Drafting three machine parts using reference drawings.

4) 3D Modelling

1)SHEET METAL

To build a post box using the SHEET METAL MODE IN FUSION 360. The Sheet Metal Environment allows the user to look at the various properties of a sheet metal and work on it simultaneoulsy.

2)Solid Modelling

To Design a simple aerofoil for an HTOL aircraft using Fusion360.Make use of Plug-Ins and add ons to generate a NACA aerofoil. The cross-sectional shape of an aircraft's wing is called an Airfoil. Its function is to generate lift perpendicular to the flow of the air. NACA stands for National Advisory Committee of Aeronautics. The Airfoil is followed up by 4 digit series which repersent various characteristics of the Airfoil. The Airfoil I used is the NACA 2412 series.The .DAT file is provided below. n2414.dat.txtNACA 2414

3)Organic Designs using Forms

The Forms feature in Fusion 360 allows users to create organic and free-form shapes. This feature is similar to sculpting clay, and is useful for modeling characters, heads, vehicles, and other complex shapes. The feature also allows the user to slice it and 3D print the given model.

4) Torroidal Propellor.

A toroidal propeller is a type of propeller that is ring-shaped with each blade forming a closed loop. The design distributes vortices generated by the propeller along the entire shape of the propeller, which means that noise is distributed and damped more quickly without requiring components that add weight to increase overall power.[9] It has similarities with the closed wing, which is annularly shaped and therefore distributes the vortices generated along the entire shape instead of just at the tip.

5) Assembly and Animation

1)Learn the difference between Body and Components.

In Autodesk Fusion 360, the main difference between bodies and components is that components have their own origin planes, while bodies share the origin planes of the component.

Body

• Bodies have volume. (Unless they are surface bodies, but that’s a different story). Bodies make up the shape of a component. They are created from features such as extrusions, revolves, sweeps, etc.
• You can move and copy bodies, but you can’t make joints between bodies. So, no relative motion. Move a body and it stays put in the new spot.
• Bodies can have materials and appearances applied to them. This ability to have different materials on different bodies is a bit surprising if you are used to other solids modeling software. In Autodesk Inventor, material is only applied to parts.

Component

• Components can have part numbers and other metadata. Components show up on Parts Lists.
• Components can be parts, or they can be assemblies. New designs start as single part files, but when you create a new component in a design that file becomes an assembly. * You can also have subassemblies within your design file.
• You can put joints between components to allow, or prevent, relative motion. You can’t put joints between bodies. This is key when you are designing machinery or products where you need to visualize the motion between parts.

2)Geneva Wheel Mechanism

The Geneva drive or Geneva mechanism is a gear mechanism that translates a continuous rotation movement into intermittent rotary motion.

Applications

1)Film movie projectors and movie cameras. The film advances frame by frame, each frame standing still in front of the lens for a portion of the frame cycle (typically at a rate of 24 cycles per second), and rapidly accelerating, advancing, and decelerating during the rest of the cycle. 2)The name, Geneva drive, is derived from the device's earliest application in mechanical watches, which were popularized in Geneva.

6) Spur Gear Design

To design a Spur Gear in Fusion 360 the Plug-ins of *Spur Gear is used. This option is found in the utitlities section. The given dimensions are : Gear Ratio: 2:1 (Input gear: 12 teeth, Output Gear: 24 teeth) Module (m): 3 mm Pressure Angle (α): 20 degrees Material: Steel

7) Parametric Box

The design relates to Parametric box with a sliding joint mechanism.

Electronics

AND Gate

The following diagrams gives the logic tables and working of the AND Gate.

OR Gate

The following diagrams gives the logic tables and working of the OR Gate

N-Channel MOSFET

• The N-Channel MOSFET Is a type of MOSFET. In the N channel MOSFET, the channel is composed of the majority of the electrons as current carriers. When the MOSFET is activated, the majority of current flows due to electrons moving through the channel.
• Types of N-Channel MOSFET On the basis of working, construction and Characteristics, The N-Channel MOSFET is classified in to two parts, Which are given below.

*1)Enhancement Type N-Channel MOSFET *2)Depletion Type N-Channel MOSFET