When manufacturing involute standard spur gears with generating cutting method, the minimum teeth number to avoid undercutting is
A: 15
B: 16
C: 17
D: 18
A: 15
B: 16
C: 17
D: 18
举一反三
- When manufacturing involute standard spur gears with generating cutting method, methods to avoid undercutting include A: Reduce the tooth height of the tool knife B: Increase the number of teeth of the machined gear C: Moves the cutter away from the gear under machining D: None of the above
- What is the reason for undercutting in the generating method of gear machining? A: The addendum line of the rack cutter is higher than the tangent point B: Too many teeth C: Too little teeth D: None of the above
- Comparing with the spur gears, what are the advantages of helical gears? A: Helical gears operate more smoothly and silently. B: High contact ratio and heavier load capability. C: No thrust along gear axis. D: Less sensitive to undercutting
- 某班30名学生，他们的年龄如下：16 18 15 17 17 19 16 17 18 1717 17 16 16 15 17 17 16 17 1718 17 16 17 17 16 18 17 17 16
- Compared with standard spur gears, helical gears have advantages of A: Center distance can be adjusted by changing helix angle B: Contact ratio is big with large load capacity C: Transmission is more steady D: Axial force exist