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10.1 Teken 'n deurseen aansigt van 'n vierkantige skroefdraad - NSC Mechanical Technology Fitting and Machining - Question 10 - 2023 - Paper 1

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10.1 Teken 'n deurseen aansigt van 'n vierkantige skroefdraad. Bennoem die kroon in die wortel van die skroefdraad. 10.2 'n Tweevoudige vierkantige skroefdraad moet ... show full transcript

Worked Solution & Example Answer:10.1 Teken 'n deurseen aansigt van 'n vierkantige skroefdraad - NSC Mechanical Technology Fitting and Machining - Question 10 - 2023 - Paper 1

Step 1

10.2.1 Steekdiameter:

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Answer

Die steekdiameter (SD) kan bereken word met die formule:

SD=BDP2SD = BD - \frac{P}{2}

waarBY BD = 70 mm en die steeklaag (P) = 25 mm. So,

SD=70252=7012.50=63.75 mmSD = 70 - \frac{25}{2} = 70 - 12.50 = 63.75 \text{ mm}

Die steekdiameter is 63.75 mm.

Step 2

10.2.2 Helikshoek van die skroefdraad:

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Answer

Die helikshoek kan bereken word met die tangens funksie:

tan(θ)=PπDp\tan(\theta) = \frac{P}{\pi D_{p}}

Hier is P = 25 mm en Dp=63.75mmD_{p} = 63.75 mm. Dus,

tan(θ)=25π×63.75\tan(\theta) = \frac{25}{\pi \times 63.75}

Na berekening, heta7.12 heta \approx 7.12^{\circ}.

Step 3

10.2.3 Ingryphoek:

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Answer

Die ingriphoek is:

Ingryphoek=90(Helikshoek+Vrylophook)\text{Ingryphoek} = 90^{\circ} - (\text{Helikshoek} + \text{Vrylophook})

=90(7.12+3)=9010.12=79.88 of 7953= 90^{\circ} - (7.12^{\circ} + 3^{\circ}) = 90^{\circ} - 10.12^{\circ} = 79.88^{\circ}\text{ of } 79^{\circ}53'.

Step 4

10.2.4 Sleephoek:

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Answer

Die sleephoek kan bepaal word as:

Sleephoek=90+(HelikshoekVrylophook)\text{Sleephoek} = 90^{\circ} + (\text{Helikshoek} - \text{Vrylophook})

=90+(7.123)=90+4.12=94.12 or 947= 90^{\circ} + (7.12^{\circ} - 3^{\circ}) = 90^{\circ} + 4.12^{\circ} = 94.12^{\circ}\text{ or } 94^{\circ}7'.

Step 5

10.3 Benoom die A–C van die V-skroefdraad:

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Answer

A: Helikshoek
B: Steek / Stying
C: Wortel

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