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PROJECT 05 / CAD / CAM

From geometry to manufacture.

NX CAM, production definition and inspection

Two connected manufacturing studies: optimise the toolpath for an aluminium plate, then define a separate component so it can be made and inspected.

MY CONTRIBUTION

Individual coursework: CAM setup, hand calculations, machining comparison, production drawings and inspection planning

CONTEXT

Kingston University London
2026

TOOLS & METHODS

Siemens NX CAM · CNC toolpaths · GD&T / PMI · Metrology planning

Isometric CAD model of a machined support component with mounting holes and a central bore
Component CAD

Validate the toolpath

I created face-milling and hole-making operations in NX and checked cutting distance, non-cutting travel, machining time and material removal with hand calculations. The comparison kept the main validation differences within the assignment’s 10% range.

Change a parameter, understand the effect

The simulated face-milling cycle fell from 82 seconds to 70 seconds when the feed rate increased to 6,000 mm/min. Increasing spindle speed alone did not change the programmed path or cycle time. Reducing step-over from 75% to 50% increased the number of passes and the total time to 113 seconds.

Connect design intent to inspection

For the production component, I developed a drawing and 3D PMI model with a datum system, tolerances, surface-finish requirements and GD&T. I then proposed suitable measurement equipment and an inspection sequence based on those requirements.

Choose a manufacturing route

I compared subtractive machining, additive manufacture and injection moulding. CNC machining suited the defined final component, while printing offered a route for prototype evaluation. The CAM work produced post-processed machine code, but the report does not claim a physically machined production run.

Project evidence: CAM/CNC Machining Tool Path Optimization and Methods of Measurement report dated 29 March 2026. Timings are CAM estimates, not shop-floor measurements.

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Stiffness with a constraint.