two gears, 2 and 4, have a center-to-center distance of 20 in. Gear 2 rotates at 100 rpm and has 16 teeth. Gear 4 rotates at 160 rpm. The teeth on the gear 2 are formed as follows: The face is a circle arc whose radius is 4½ in. and whose center is 1½ in. inside of the pitch circle. The flank is radial. The length of addendum is 1 1/2 in.; of the dedendum, 2 in. (a) Find the curves forming the tooth on the gear 4. (b) Draw the path of contact if 2 is the driver and rotates counterclockwise. (c) Draw two full teeth on each gear, allowing 0.1 in. backlash. Dimension the gears and teeth. (d) Show complete construction for one point on the flank and one point on the face of curve 4. Use letters on construction to indicate fully the construction.
@@alirule 4). Make a dimensioned working drawing of an 18 tooth pinion, module 4, 20° pressure angle using the following information. Face width 38 mm, central web 12 mm thick, boss length 50 mm, boss diameter 45 mm, boss bored 32 mm, inside rim 170 Involute gears diameter 112 mm, four equi-spaced lightening holes 22 mm diameter, through the web on a 78 mm diameter pitch circle. Fillet radii 3 mm. Draw full size in first angle projection a front elevation showing three teeth drawn approximately, and a sectional end view. In the end view the boss is positioned symmetrically about the centre line. Show a table giving the gear data. 5 ). Draw full size in third angle projection a dimensioned front elevation and sectional end view of a 30 tooth spur gear, module 6, 20° pressure angle. Show three teeth on the front elevation drawn approximately and a table of gear data. The face width of the gear is 25 mm, rim diameter 158 mm, boss diameter 34 mm, reamed 24 mm diameter, boss length 50 mm. The boss is supported by four straight spokes of elliptical cross-section, the minor diameter being constant at 10mm and the major diameter tapering from 24 mm at the boss to 22 mm at the rim. Fillet radii 5 mm. The boss is symmetrical about the centre line in the end view. Show a revolved section of one spoke on the elevation.
Automotive engineering is basically Mechanical engineering. It's simply an option in mechanical engineering, others are production,plant engineering, manufacturing, etc.
![[Full] 4 ต่อ 4 Celebrity EP.920 | 3 พ.ย. 67 | one31](http://i.ytimg.com/vi/KwiW2M_kAg4/mqdefault.jpg)
I am trying to learn mechanic off head but from all videos i have seen on this tipic this is the best
@acager 2019 you are welcome
two gears, 2 and 4, have a center-to-center distance of 20 in. Gear 2 rotates at 100 rpm and has 16 teeth. Gear 4 rotates at 160 rpm. The teeth on the gear 2 are formed as follows: The face is a circle arc whose radius is 4½ in. and whose center is 1½ in. inside of the pitch circle. The flank is radial. The length of addendum is 1 1/2 in.; of the dedendum, 2 in. (a) Find the curves forming the tooth on the gear 4. (b) Draw the path of contact if 2 is the driver and rotates counterclockwise. (c) Draw two full teeth on each gear, allowing 0.1 in. backlash. Dimension the gears and teeth. (d) Show complete construction for one point on the flank and one point on the face of curve 4. Use letters on construction to indicate fully the construction.
This isn't a complex as it seems to be...wish I can show you how it's done
You can chat me up
Good job mate keep it up
Thanks 👍
sir graphix always at the rescue 😁
Good job sir, I don't know if you can help us with the drawing of a pinion
What is your question
@@alirule 4). Make a dimensioned working drawing of an 18 tooth pinion,
module 4, 20° pressure angle using the following information.
Face width 38 mm, central web 12 mm thick, boss length
50 mm, boss diameter 45 mm, boss bored 32 mm, inside rim
170
Involute gears
diameter 112 mm, four equi-spaced lightening holes 22 mm
diameter, through the web on a 78 mm diameter pitch circle.
Fillet radii 3 mm.
Draw full size in first angle projection a front elevation
showing three teeth drawn approximately, and a sectional end
view. In the end view the boss is positioned symmetrically
about the centre line. Show a table giving the gear data.
5 ). Draw full size in third angle projection a dimensioned front
elevation and sectional end view of a 30 tooth spur gear,
module 6, 20° pressure angle. Show three teeth on the front
elevation drawn approximately and a table of gear data. The
face width of the gear is 25 mm, rim diameter 158 mm, boss
diameter 34 mm, reamed 24 mm diameter, boss length 50 mm.
The boss is supported by four straight spokes of elliptical
cross-section, the minor diameter being constant at 10mm and
the major diameter tapering from 24 mm at the boss to 22 mm
at the rim. Fillet radii 5 mm. The boss is symmetrical about the
centre line in the end view. Show a revolved section of one
spoke on the elevation.
@@jonathanibrahim9423 I believe this question have diagram
Was an assignment given to us mechanical engineering...
@@alirule no sir it doesn't. The question was picked from a PDF material and given to us
U made it good let me go and try
Thank you, you just earned a subscriber
Awesome, thank you!
How do you get the 0.25 during the clearance calculation?
O.25 is a constant
Atleast am okay now....i will go and practise more
Hello sir can you reflect a question which comprises a gear ratio eg.... 5:3.... does the ratio matters in finding our data
No
Why you Divide Line From F to B by 2 and in you last video you divide by 4
1/4 of FB and 1/3 of AE
thank you
@@alirule If it's supposed to be 1/4 of FB, why did you take half of FB?
I think he made a mistake there, it should be 4
Is this mechanical engineering or automotive?
Both
Automotive engineering is basically Mechanical engineering. It's simply an option in mechanical engineering, others are production,plant engineering, manufacturing, etc.
Pleace i which to see a video of you on this part of machanics
From f to B why did you devided by 2 in the last video you devided it by 4
It is the concept
@@alirule Can you explain why?
It is the concept
You should divide by 4
For millimeter, it is mm not MM.