Differentiate between assembly chart and operation process chart, give example for each case.
The Correct Answer and Explanation is :
An assembly chart and an operation process chart are both tools used in industrial engineering and process analysis to visually represent the steps involved in manufacturing or processing. However, they have distinct purposes and presentation styles.
Assembly Chart:
An assembly chart is used to represent the sequence of operations and sub-assemblies involved in the final product assembly. It focuses primarily on the assembly of different components, indicating how various parts are put together to form the final product. The chart typically uses symbols to represent parts and sub-assemblies, and lines or arrows to indicate the flow of the assembly process.
Example: Consider the assembly of a bicycle. The assembly chart would depict parts such as wheels, frame, handlebars, and pedals. It would show the sequence in which these parts are assembled, starting with the frame, followed by the attachment of the wheels, handlebars, and pedals. Each step would represent the addition of a specific component, and arrows would indicate the flow from one step to the next.
Operation Process Chart:
An operation process chart is a tool used to represent the complete sequence of operations required to manufacture a product or perform a process. It shows both the major operations (e.g., machining, assembly) and auxiliary operations (e.g., inspection, transportation). The operation process chart outlines the entire process flow, using standard symbols for operations, inspections, movements, and delays.
Example: In the case of manufacturing a bicycle, the operation process chart would begin with the steps for producing individual components such as welding the frame, machining the wheels, and manufacturing pedals. Then, it would include operations for inspecting, testing, and assembling these parts into the final product. The chart would provide a clear picture of every operation involved, not just the assembly.
Key Differences:
- Focus: The assembly chart emphasizes the sequence of assembly steps, while the operation process chart details every operation and step in the manufacturing process, including inspection and transportation.
- Symbols: The assembly chart uses simple symbols to represent components and assembly steps, while the operation process chart uses a wider variety of symbols to represent different types of operations (e.g., inspections, movements, and delays).
- Purpose: The assembly chart is used to optimize the assembly sequence, whereas the operation process chart is used to analyze and improve the entire manufacturing process.
Both charts are valuable tools in process planning, helping to identify inefficiencies and streamline production.