Master of Engineering Computer-Aided Manufacturing Flashcards
7 cards from real ME or MEng Master of Engineering practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Master of Engineering Computer-Aided Manufacturing flashcards as text
Which scheduling algorithm minimizes the maximum lateness of jobs in a single-machine manufacturing environment?
Answer: Earliest Due Date (EDD)
The Earliest Due Date (EDD) rule minimizes maximum lateness by sequencing jobs in order of their due dates.
In the context of machine tool metrology, what is the Abbe principle (Abbe error)?
Answer: Error amplification when the measurement axis is offset from the reference axis
Abbe's principle states that angular errors are amplified into linear errors proportional to the offset distance between the measured and reference axes.
What is the primary function of a Manufacturing Execution System (MES) in a smart factory?
Answer: Bridging ERP business planning with real-time shop floor control and data collection
MES sits between ERP systems and machine-level controls, tracking WIP, enforcing schedules, and collecting real-time production data.
In EDM (Electrical Discharge Machining), material removal occurs through which mechanism?
Answer: Thermal erosion by repeated electrical sparks in a dielectric fluid
EDM removes material through controlled electrical discharges that locally melt and vaporize the workpiece in a dielectric fluid.
Which topology optimization method is most commonly integrated with CAD/CAM software to reduce part weight while maintaining structural performance?
Answer: Solid Isotropic Material with Penalization (SIMP)
SIMP iteratively redistributes material density within a design space, penalizing intermediate densities to produce distinct solid/void regions.
In CNC turning, which parameter most directly controls the surface roughness (Ra) of a turned part?
Answer: Feed rate per revolution
Surface roughness in turning is primarily determined by feed rate and tool nose radius through the kinematic roughness formula Ra ≈ f²/8r.
What is the purpose of 'fixtureless manufacturing' enabled by adaptive machining and in-process measurement?
Answer: Allowing parts to be machined without dedicated fixtures by measuring and compensating for part position in real time
Adaptive machining measures actual part position and updates toolpaths in real time, reducing reliance on precise physical fixtures.