JNTU B.Tech IV AUTOMATION IN MANUFACTURING Previous Question Paper (September - 2022 - R16)

Pneumatic systems utilize compressed air as a medium to transmit and control energy. The primary components include:

• Air Compressor: The power source that converts mechanical energy into compressed air energy.
• Air Treatment Units (FRL): A combination of Filter (to remove contaminants), Regulator (to maintain constant pressure), and Lubricator (to reduce friction in moving parts).
• Control Valves: Devices such as directional control valves (DCVs) that manage the flow direction, pressure, and rate of the air to actuate components.
• Actuators: Convert pneumatic energy back into mechanical motion, typically linear (cylinders) or rotary (pneumatic motors).
• Piping and Fittings: The network of hoses and connectors that transport air throughout the system.

Automation strategies aim to increase productivity, reduce costs, and improve quality. Key strategies include:

1. USA Principle: Understand the existing process, Simplify the process, and then Automate. This prevents the automation of inefficient or unnecessary steps.
2. Ten Strategies for Automation: These include intensification of production, integration of operations, increased flexibility, improved material handling, online inspection, process control, and computer-integrated manufacturing.
3. Process Improvement: Focuses on reducing cycle times, minimizing setup times, and eliminating non-value-added activities (waste reduction).
4. Flexible Automation: Implementing systems capable of handling a variety of product designs with minimal downtime for changeovers, essential for high-mix, low-volume production environments.
5. Total Productive Maintenance (TPM): Ensuring high equipment availability through proactive maintenance to prevent unplanned downtime, which is critical for the reliability of automated lines.