PLTW CIM FINAL REVIEW EXAM 2024 WITH CORRECT ANSWERS

Jig - correct answer A device that holds and locates a piece of work and guides the tools that operate upon it. Example: table, anything that is used to guide material. Fixture - correct answer A device designed and built for holding a particular piece of work for machining operations without the ability to guide tools Postprocessor - correct answer A post-processor is in essence software and or a sequence of instructions to deal with a nuetral format generated by a CAM system and translates that nuetral language to one that makes your CNC control happy. Flexible Manufacturing system - correct answer Adapts efficiently to changing need, allows the system to react in case of changes whether predicted or unpredicted. Lean manufacturing - correct answer Systematic elimination of waste. Entire system must participate to produce effectively six sigma - correct answer indicates measure of quality for near perfection. Produces fewer than 3.4 defects per million opportunities. Identifies and corrects causes of defects. Utilizes the five "whys" to uncover root cause. kaizen - correct answer japanese for improvement. Based on continuous improvement by everyone. mass production - correct answer the production of large amounts of standardized products whereas handmade production makes a smaller number of items work envelope - correct answer range of motion of a robot or machine rapid prototyping - correct answer prototype made directly from a computer model. several technologies: sterolithography, 3D printing, selective laser sintering, fused deposition modeling. work cells - correct answer an arrangement of resources in a manufacturing enviroment to improve the quality speed and cost of the process tolerance - correct answer an allowable amount of variation of a specified quantity, especially in the dimensions of a machine or part repeatability - correct answer indicates how close together repeated measurements of the same quantity are to each other. accuracy - correct answer indicates how close measurements are to the actual quantity being measured. closed loop - correct answer a type of control system that automatically changes the output based on the difference between the feedback signal to the input signal. Requires feedback from sensor input to control outputs.