Need help in design for anti-backlash spur gears
Need help in design for anti-backlash spur gears
(OP)
Hello,
I wish to design an "anti-backlash" spur gears pair with torque of 100Nm and very slow speed.
I could not find any material about it.
Thanks in advance,
Joel
I wish to design an "anti-backlash" spur gears pair with torque of 100Nm and very slow speed.
I could not find any material about it.
Thanks in advance,
Joel





RE: Need help in design for anti-backlash spur gears
For ideas and sample of anti-backlash arrangements see Gear Design and Aplication, Nicholas P. Chironis, McGRAW-Hill 1967 pages 235-242
RE: Need help in design for anti-backlash spur gears
Thank you.I am from Israel, and this is my first time to use this forum.
The application is for 0.1 RPM output speed,and life required is very small.Possibly 2000-5000 hours.
It is a stand by application.
I have a strong feeling that it will work, just do not know
how to design-calculate the springs, and even the teeth.
My "finger rule" is to use set of gears with module 2-2.5
17-22 teeth in pinion, and ratio of 4-5.
Width will be 10-15mm for each half of gear part, and double for pinion.
Thanks, and have a nice weekend,
Joel
RE: Need help in design for anti-backlash spur gears
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RE: Need help in design for anti-backlash spur gears
An alternative to anti-backlash gears is to spring load the gears together. Gear fabricators can cut the gears oversize so that the involute form is optimized for constant contact.
JHG
RE: Need help in design for anti-backlash spur gears
Can you send me a sketch of this idea ?
Thanks.
Joel
RE: Need help in design for anti-backlash spur gears
I designed one of these a long time ago. I do not have a sketch handy. One gear was on a pivot arm that was loaded against the other gear by a spring. There are all sorts of ways to implement the concept.
Also, you can look into Harmonic Drive.
JHG
RE: Need help in design for anti-backlash spur gears
Cheers
Greg Locock
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