流程图入门().pptVIP

* Here’s an example of a process flow mapped out using the ASME symbols. You could draw horizontal lines on it to show the work by function and make it into Swim Lanes. (see areas on this example separated by dashed lines: Shipping and Receiving Dock, Purchase Parts Inspection(PPI), and Dept. A machining Instructors: The square footage does not map out. Don’t try to explain it. Just focus on the time element of this map and the inventory waste when trying to explain it to the class. Also notice that the actual value added % is less than 2%, as it is in many processes. To improve this process, you would need to try to reduce the inventory between processes, the changeover time for the drill presses, or the move distance between processes. There are really only 2 valued activities in the whole flow. * Use arrows on all lines to show clear direction of flow. In general, the process should flow from left to right. Display functions as horizontal tracks. Place each activity in the appropriate functional track. If multiple functions participate in an activity, extend the process box to cover all relevant tracks. When two tasks occur at the same time, draw the steps in parallel. Show time across the bottom of the map. Indicate the time of each step individually, including all non-value-added time. Then add the total time for the entire process. Use a box to indicate a task or activity. Use a D(delay) symbol to represent wait time, move time, or other non-value-added time. Use a diamond to indicate a decision and label the exits from decision diamonds. Include more than one exit on decision diamonds. Decisions always have two or more possible choices. An arrow leaving a box represents an output. An arrow entering a box represents an input. Work in Progress occurs between steps and should be labeled WIP and represented by an upside down triangle. The blue arrows represent a move or transport 9 different activities * Top row illustrates the data flow. The other ro