Thabo is 'n masjienoperateur en het opdrag gekry om 'n reguitrat met 'n steeksirkeldiameter van 136 mm en 'n module van 4 te sny - NSC Mechanical Technology Fitting and Machining - Question 6 - 2021 - Paper 1
Question 6
Thabo is 'n masjienoperateur en het opdrag gekry om 'n reguitrat met 'n steeksirkeldiameter van 136 mm en 'n module van 4 te sny.
Bereken die volgende:
6.1.1 Aanta... show full transcript
Worked Solution & Example Answer:Thabo is 'n masjienoperateur en het opdrag gekry om 'n reguitrat met 'n steeksirkeldiameter van 136 mm en 'n module van 4 te sny - NSC Mechanical Technology Fitting and Machining - Question 6 - 2021 - Paper 1
Step 1
Aantal tande
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
To calculate the number of teeth (T) on the gear, we use the formula:
T=mPCD
Given:
PCD (Pitch Circle Diameter) = 136 mm
Module (m) = 4
So,
T=4136=34 tande
Step 2
Dedendum
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The dedendum (d) is calculated using the formula:
Dedendum=m+1=4+1=5mm
Step 3
Buitediameter
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The outside diameter (OD) can be determined with the formula:
OD=PCD+2(m)=136+2(4)=144 mm
Step 4
Sirkelsteek
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The circular pitch (CP) is calculated as:
CP=m⋅π=4⋅π≈12.57 mm
Step 5
Minimum wydte van die swaelstert (w)
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
To determine the minimum width of the dove tail (w), we calculate:
w=190−2(DE)
To find DE:
Using tangent:
tan∠=EDAD,DE=AD⋅tan(30∘)
Given:
AD = 38 mm
DE = 38 \cdot tan(30^\circ) = 21.94 mm
Then,
w=190−2(21.94)=146.12mm
Step 6
Afstand oor die pressirollers (M)
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The distance over the rollers (M) is calculated as:
