Fig. 6 shows a flow chart for the process of manufacturing a batch of sheet metal brackets. The base keeps it still. It looks clean and neat. The parts are ...

Assessment: Design & Technology 0445 | Paper 3 Mock 01 | Materials Subject: Design & Technology - 0445

Question 1 Report

Fig. 6 shows a flow chart for the process of manufacturing a batch of sheet metal brackets.

The base keeps it still. It looks clean and neat. The parts are all the same size. The handle is round.

diagram

(a) Name the process that could be used for task A in the flow chart. [1]

(b) State the shape used in a flow chart to represent a decision. [1]

(c) Explain what happens if the dimensions are not correct, using the flow chart in Fig. 6. [1]

(d) Explain why a work order would be useful alongside this flow chart when producing a batch of 50 brackets. [1]

[Total: 4 marks]

Answer Details

(a) A suitable process for task A in the flow chart is cut the sheet metal to size, using shearing, tin snips, or a guillotine [1]. In the sequence of operations, the metal has already been measured and marked out in the previous step, so the next logical operation is to cut along the marked lines to produce the correct shape before the edges are filed smooth.

(b) The shape used in a flow chart to represent a decision is a diamond (rhombus) [1]. This shape contains a question (here, "Dimensions correct?") that has two possible outcomes (typically "Yes" and "No"), with the flow following a different path depending on the answer.

(c) If the dimensions are not correct, the flow chart shows that the process follows the "No" path, which loops back to the "Measure and mark out" stage [1]. This means the component is re-measured and re-marked, then cut again, filed, and re-checked. The loop continues until the dimensions are within tolerance and the "Yes" path is followed, allowing the process to continue to the "Bend to shape" step. This feedback loop is a quality control mechanism that prevents incorrectly sized brackets from progressing to the next manufacturing stage.

(d) A work order would be useful alongside this flow chart when producing a batch of 50 brackets because it lists all the materials needed, quantities, tools required, and the sequence of operations in a single document [1]. This allows any worker (not just the person who created the flow chart) to follow the same process accurately for all 50 brackets, ensuring consistency. It also ensures that the correct quantity of sheet metal, files, and bending equipment are ordered and prepared in advance, avoiding delays during production.

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