What is the primary purpose of jigs and fixtures in manufacturing?
A Polishing
B Cutting
C Cooling
D Holding parts
Jigs and fixtures are used to securely hold and position workpieces during machining. They ensure that the part is accurately aligned and positioned, improving precision, repeatability, and efficiency in manufacturing processes.
What does lean manufacturing aim to reduce?
A Waste
B Inventory
C Speed
D Quality
Lean manufacturing focuses on minimizing waste in all forms, including excess materials, time, and labor. It seeks to streamline processes, improve efficiency, and reduce costs while maintaining high-quality production.
What is the main goal of production planning?
A Increasing workforce
B Reducing cost
C Managing materials
D Improving sales
Production planning aims to ensure that the right materials are available at the right time to meet production schedules. It helps optimize the use of resources, minimize delays, and maintain a smooth manufacturing process.
What is the function of fixtures in machining?
A Shaping
B Holding parts
C Cooling
D Cutting
Fixtures are tools used to securely hold and support a workpiece during machining processes. They provide stability and precise positioning, which enhances accuracy, consistency, and safety during operations like milling, drilling, and turning.
What does production optimization focus on?
A Increasing complexity
B Reducing labor
C Reducing waste
D Improving quality
Production optimization aims to improve manufacturing efficiency by reducing waste in terms of time, materials, and energy. By streamlining processes, manufacturers can reduce costs and enhance overall productivity while maintaining quality.
What is the key objective of just-in-time (JIT) manufacturing?
A Reduce lead time
B Increase inventory
C Increase worker output
D Reduce stock
JIT manufacturing aims to reduce inventory by producing only what is needed, when it is needed, and in the required quantities. This reduces storage costs, minimizes waste, and enhances flow within the production process.
Which of the following best describes a “fixture”?
A Tool for holding parts
B Tool for measuring
C Tool for shaping
D Tool for cutting
A fixture is used to hold and support a workpiece during machining operations. It ensures that the part is positioned correctly for accurate and repeatable results, improving efficiency and precision during manufacturing processes.
What does production scheduling aim to optimize?
A Machines
B Labor
C Time
D Materials
Production scheduling is the process of planning the production timeline to ensure that tasks are completed on time and in the correct sequence. It helps avoid bottlenecks and delays, improving overall manufacturing efficiency.
What is the purpose of work cell design in lean manufacturing?
A Enhance inventory
B Improve material flow
C Increase space
D Reduce labor
Work cell design in lean manufacturing aims to streamline the flow of materials and minimize waste by arranging machines and workstations in a way that optimizes the production process and reduces unnecessary handling or transport of materials.
What is the main characteristic of the drilling process?
A Material removal
B Cutting
C Shaping
D Joining
Drilling is a process where a rotating tool removes material to create holes in a workpiece. It is one of the most common processes used for producing round holes with specific diameters and depths.
What is the function of stamping in manufacturing?
A Drilling
B Cutting
C Shaping
D Cooling
Stamping is used in sheet metal forming to shape, cut, or emboss material by applying pressure with a die. It is commonly used to produce components like automotive body panels, electrical parts, and appliances.
What does extrusion help create in manufacturing?
A Cylindrical parts
B Continuous parts
C Small parts
D Large parts
Extrusion is used to create continuous parts with a consistent cross section. These parts are produced by forcing material through a mold, and the process is commonly used to create items like pipes, rods, and window frames.
What is the main function of a lathe in manufacturing?
A Turning
B Shaping
C Cutting
D Drilling
A lathe is used for turning operations, where the workpiece rotates and a stationary cutting tool removes material to shape the piece. This process is ideal for creating cylindrical parts with high precision.
What is the purpose of a poka-yoke in manufacturing?
A Prevent defects
B Increase speed
C Reduce waste
D Improve inventory
Poka-yoke is a mistake-proofing method used to prevent defects by designing systems that automatically prevent errors or signal when mistakes occur. This technique enhances product quality and reduces the likelihood of defects in manufacturing.
What is a key benefit of production line balancing?
A More efficient worker use
B Reduced worker fatigue
C Improved material quality
D Faster setup times
Production line balancing involves distributing tasks evenly among workers and machines to optimize efficiency. By ensuring that each workstation is appropriately loaded with tasks, it reduces idle time and maximizes the use of resources, improving overall productivity.