Minimum number of teeth for involute rack and pinion arrangement for pressure angle if 200 is
For a single reduction spur gear, the gear ratio is 10 to 1 and the center distance is 330 mm. The nearest standard module if no interference is to occur, will be
Minimum number of teeth to avoid interference, T = 18
For helical gears, the helix angle generally ranges from
For helical gears, the circular pitch Pc, the normal pitch Pn and the helix angle a are related by the identity
Consider the following statements:
1. A stub both has working depth larger than that of a full depth tooth.
2. The path of contact for involute gears is an arc of a circle.
Which of these statements is/are correct?
1. A stub tooth has working depth smaller than that of a full depth tooth.
2. The path of contact for involute gears is a straight line.
The ends of gears are made slightly thinner (crowning). This is done
The maximum efficiency of worm and worm wheel system is
where φ is the friction angle
Tumbler gears are
The size of Gear is specified by
Size of gear is specified by its pitch and pitch can be classified as
Hence circular pitch, diametral pitch and module represents size of gear.
If D is pitch circle diameter and T is the number of teeth then its circular pitch is
D = Pitch circle diameter
T = Number of teeth