Question 1: Define CAD and explain its main purpose in the manufacturing process.

Answer: CAD (Computer-Aided Design) is a software used to create detailed drawings and models of products digitally. Its main purpose is to help designers visualize and modify designs accurately before manufacturing.

Question 2: Describe how CAM is used after a design has been created in CAD.

Answer: CAM (Computer-Aided Manufacturing) uses the digital design from CAD to control machinery such as CNC machines, enabling precise and automated production of the designed product.

Question 3: List three advantages of using CAD/CAM in the manufacturing process.

Answer: 1. Increased accuracy and precision. 2. Faster production times. 3. Easier modifications and adjustments to designs.

Question 4: Design Brief: Your school needs a new nameplate for the classroom door. It must be made of plastic and have the school name and room number. Use CAD to create a basic 2D sketch of your design, including the placement of text.

Answer: A clear 2D sketch showing the shape of the nameplate, with space allocated for the school name and room number. Labels indicating the position of the text and overall dimensions should be included.

Question 5: Sketch a simple layout of a CNC machine used in CAM. Include the main components such as the control panel, spindle, and workpiece area.

Answer: A labeled sketch of a CNC machine showing the control panel on one side, the spindle at the center or top, and the workpiece area below or in front of the spindle. Basic outlines of the machine frame should be included.

Question 6: Explain why CAD models are important for producing complex products with CAM machines.

Answer: CAD models provide precise and detailed digital representations of complex products, allowing CAM machines to accurately produce intricate designs without errors, reducing waste and time.

Question 7: Imagine you are designing a keyring with your name on it. Briefly describe the steps you would take from initial idea to manufacturing using CAD and CAM.

Answer: First, create a 3D CAD model of the keyring with the name engraved. Next, prepare the CAD file for CAM by setting machining paths. Then, transfer the file to a CNC machine and start the manufacturing process to produce the keyring.

Question 8: Identify two common materials that can be used in CAM processes and explain why they are suitable.

Answer: Materials like plastic and soft metals (e.g., aluminum) are common because they are easier to machine with CNC machines, and they produce smooth finishes and are cost-effective for prototypes or small batches.

Question 9: Design Brief: You are tasked with creating a small wooden box with a lid. Sketch your design, indicating how CAD will help in ensuring the box fits together correctly during manufacturing.

Answer: A detailed sketch showing the box and lid with accurate measurements. Labels should indicate how CAD helps in designing precise joint fits and ensuring dimensions match for assembly.

Question 10: What are some limitations of using CAD and CAM in manufacturing? Provide at least two points.

Answer: 1. High initial costs for software and equipment. 2. Requires technical skills and training to operate effectively.