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CIM

QuestionAnswer
Name and explain the Boolean functions Union (join/add) - to combine bodies. Subtract (cut) - to create cavity or opening. Intersect - to keep only overlapping volume.
There are four key tool exchange policies. Name them. Full kit exchange. Differential kit exchange. Consolidated kit exchange. Residential kit exchange
Explain the concept behind Residential Kit Exchange Kit is held permanently in the machine. Tools required must be less than or equal to the tool magazine capacity.
Under what circumstances might a fixture dominated setup be used in a Flexible Manufacturing System? If fixture set-up is particularly time consuming, or if the fixture itself is expensive.
Explain SML Single Machine Loading - when a job or part is assigned so that all (or as many as possible) of its operations are completed on one machine.
Explain MML When a jobs operations are distributed across multiple machines.
Explain CML Stage 1, jobs are pre allocated using SML. Stage 2, remaining jobs are split to minimise idle time.
Identify 4 major output performance measures that a good scheduling strategy should provide. On time production (high delivery performance), minimal idle time (high resource utilisation), minimum throughput time (from product release to completion), low work in progress (low inventory while maintaining output).
Name two major tool wear mechanism modes in machining Abrasive wear, adhesive wear.
List the 5 main cutting tool materials in machining process HSS, cemented carbide, ceramics, diamond, CBN
List the advantages of a modern turning centre machine over traditional 2 axis machines. Multi axis turning centres (3,4,5 or twin spindle), increased versatility, reduced setup times, higher precision, greater automation, improved automation, improved accuracy (no stack up of efforts due to re-clamping), complex geometries poss, live tooling
What are the three main modelling functions in CAD in solid modelling? Primitive creation (solid generation), swept feature creation (extruding, revolving, sweeping or lofting a 2D profile to form a 3D shape), Boolean operations (solid editing - add, cut and intersect).
Describe the 4 main manufacturing layouts Fixed position (project layout), cellular (group technology), process layout (functional, job shop), product layout (line/flow/transfer line).
Explain the Product Layout Equipment is arranged in the sequence of operations for a specific product. Work flows from station to station.
Explain the Process layout. Process layout (functional/job shop). Machines are grouped together by type (I.e. lathes together, mills together). Parts route around the factory depending on what operations they require.
Explain the Fixed layout. Fixed (project) layout. The product stays in one place and the tools, equipment and layout move to it.
Explain the Cellular layout
Created by: El707
 

 



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