Veena's D-P-001 course work. Lv 1

Level 2

3 / 4 / 2025

1. Assembly And Simulation

Designed a mechanical gripper in Fusion 360 by creating individual components like the base, fingers, and linkages using the Sketch and Extrude tools. After modeling, you assembled the parts using revolute and slider joints to enable smooth finger movement. A motion study was performed to simulate the gripping action and ensure proper functionality. The design was refined for stability and efficiency, making it ready for real-world application. 

2 .Piston And Crankshaft

Designing a Piston and Crankshaft Mechanism in Fusion 360 involves multiple steps, starting from sketching individual components to assembling them with proper motion constraints. Here’s a step-by-step breakdown of how it is designed:

1. Sketching Individual Components Each component of the mechanism is designed separately in Fusion 360 using the SKETCH tool. Piston: A cylinder is sketched and extruded to create the piston body. A small hole is added for the piston pin. Connecting Rod: A rod-like shape is sketched with circular cutouts at both ends for the piston pin and crankshaft Crankshaft: Using multiple circles and arcs, the crankshaft is designed with multiple journals (offset from the main axis) to create the correct stroke motion.
2. Extruding and Creating 3D Models The Extrude tool is used to convert sketches into solid 3D parts. Fillet and Chamfer tools refine edges for a more realistic design. The Revolve tool can also be used for symmetrical parts like the crankshaft.
3. Assembling the Mechanism Once the parts are modeled, they are inserted into an Assembly file. Joints are applied to define motion: Slider Joint: Used to constrain the pistons inside the cylinder. Revolute Joint: Applied to the crankshaft so it rotates correctly. Rigid Joint: Used to fix the connecting rod with the crankshaft and piston. Motion Links: Fusion 360 allows linking joints so that the piston moves up and down as the crankshaft rotate.
4. Motion Simulation and Analysis The Animate Joint tool is used to visualize how the pistons move when the crankshaft rotates. Dynamic Simulation can be performed to analyze stresses and forces. (https://github.com/user-attachments/assets/ed829f6d-fe11-4a43-bc99-3f29da5ce5c7)

3 .Generative Design

Generative design in Autodesk Fusion 360 allows engineers to create optimized, lightweight, and structurally efficient components by defining constraints such as material, load conditions, and manufacturing methods. In the design shown, an aluminum AlSi10Mg bracket is analyzed for strength, weight reduction, and manufacturability. The software generates multiple iterations, ensuring the part meets safety and performance criteria, as seen in the von Mises stress value of 66.63 MPa and a minimum safety factor of 3.52. This approach helps engineers minimize material usage while maintaining durability, making it ideal for aerospace, automotive, and mechanical applications where weight reduction and structural integrity are critical. (https://github.com/user-attachments/assets/7e8cc8e9-7967-4f84-8956-f0f0f5a0f1f9).

4.Animation And Rendering

In Fusion 360, I started by designing the LEGO model using the Solid and Assemble Workspaces, ensuring each brick was properly aligned and constrained. Once the model was complete, I moved to the Animation Workspace to create movement. I set keyframes for each component, defining how they would assemble step by step. Using the Transform and Joint Motion tools, I simulated realistic LEGO connections, making the pieces move smoothly into place. For rendering, I switched to the Render Workspace, where I applied realistic plastic materials to the LEGO bricks. I adjusted the lighting settings to create a natural look and used ray tracing for accurate reflections and shadows. Finally, I fine-tuned the camera angles and exported the final rendered animation, showcasing the LEGO assembly with high-quality visuals. This process helped create a professional and visually appealing presentation of the LEGO modelImage (https://github.com/user-attachments/assets/fd2da348-41af-4291-b4b4-a7dac4776f30)

5. Geometric Dimensioning And Tolerancing

In Fusion 360, I implemented Geometric Dimensioning and Tolerancing (GD&T) while creating technical drawings to ensure precise manufacturing specifications. I first designed the 3D model and switched to the Drawing Workspace to generate detailed 2D drawings. Using the Dimensions and Symbols tools, I added feature control frames, specifying tolerances for flatness, perpendicularity, and concentricity. I also used datums to define reference points, ensuring accurate alignment in assembly. By applying GD&T, I improved the clarity of my design, reducing errors in manufacturing and ensuring parts fit correctly. (https://github.com/user-attachments/assets/f9c4b5f3-d8d9-497f-b5cd-4e2d719b7b4d)

6. Introduction To Laser Engraving

Introduction to Laser Engraving Laser engraving is a non-contact subtractive manufacturing process that uses a high-powered laser beam to etch or carve designs onto a material's surface. The laser removes material by vaporization, creating deep, precise markings without direct tool contact. The depth and intensity of the engraving depend on the laser's power, speed, and frequency settings. Understanding Laser Engraving Laser engraving works by focusing a laser beam on a specific point, generating intense heat that alters or removes the material. This technique is widely used due to its high precision, repeatability, and ability to engrave complex patterns on various materials, including metal, wood, glass, plastic, and leather. The process is controlled through computer-aided design (CAD) software, which guides the laser to create detailed engravings based on digital designs. Use Cases of Laser Engraving

1. Industrial Applications – Used for serial numbers, barcodes, and product identification on metal and plastic components.
2. Personalization & Customization – Engraving names, logos, or intricate designs on jewelry, gifts, and trophies.
3. Manufacturing & Prototyping – Creating high-precision molds, circuit boards, and intricate parts in engineering.
4. Woodworking & Artistic Design – Engraving patterns, artwork, and branding elements onto wood and acrylic surfaces.
5. Medical & Aerospace – Used for marking surgical instruments and aircraft parts to ensure traceability and compliance. Laser engraving is a versatile and efficient method that enhances product quality and customization possibilities while offering a high degree of detail and durability in various industries.

Electronics

1 . Create A Voltage Multiplier

Create A Voltage Multiplier A voltage multiplier circuit using a 555 Timer IC and capacitor charge pumps steps up 9V to 18V and then cascades to achieve 27V. The 555 Timer is configured in astable mode to generate a square wave, driving the charge pump stages. Each stage uses capacitors and diodes in a voltage-doubling configuration to incrementally increase the voltage. Low-drop diodes and appropriately rated capacitors ensure efficiency and reliability. This compact design is ideal for low-input to high-output DC voltage applications.

(https://github.com/user-attachments/assets/8c52b0d3-3e17-4a57-ae2c-279c6ef50f89).

2. Create a circuit that provides short-circuit protection.

Create a circuit that provides short-circuit protection The short-circuit protection circuit stops damage caused by short circuits. It uses a relay, bulb, resistor, switch, and power supply. The relay detects high current and disconnects the power to protect the system. The bulb lights up to show a short circuit has occurred. The resistor keeps the current safe during normal use. The switch lets you test or reset the circuit. (https://github.com/user-attachments/assets/16e9a1eb-9c89-49a4-a7d2-5a46ac325261) (https://github.com/user-attachments/assets/f163f808-2b82-48bf-b6ad-d788dad98a82)