single start worms
single start worms
(OP)
Hi
looking for a single start Diametral Pitch worm calculation from measurement over three wires to circular tooth thickness.
& from circular tooth thickness to measurement over three wires.
Heres the data if some one can give an assit.
# of starts~1
DP normal~32
PA normal~20 deg.
lead Angle~ 2 deg 23' 30" RH
axial pitch~ .09826
Pitch Diameter~.749
root diameter~.680-.660
lead~.09826
wire dia~.054
Measurement over wires .826-.824
Thanks
Mfgenggear
looking for a single start Diametral Pitch worm calculation from measurement over three wires to circular tooth thickness.
& from circular tooth thickness to measurement over three wires.
Heres the data if some one can give an assit.
# of starts~1
DP normal~32
PA normal~20 deg.
lead Angle~ 2 deg 23' 30" RH
axial pitch~ .09826
Pitch Diameter~.749
root diameter~.680-.660
lead~.09826
wire dia~.054
Measurement over wires .826-.824
Thanks
Mfgenggear





RE: single start worms
I would like a second check.
mfgenggear
RE: single start worms
Dimensions are metric.
Reference profile 1.25 x 0.38 x 1.0 ISO 53.2 Profile A
Addendum coefficient 1.000
Dedendum coefficient 1.250
Generating angle 20.000°
Normal Pressure Angle 20.000°
Helix angle at reference diameter 87.611°
Lead angle at reference diameter 2.389°
Reference diameter 19.025
Tip diameter 20.612
Tip form diameter 20.612
Root diameter 17.040
Generating Profile shift coefficient 0.0000 - 0.0000
Manufactured root diameter 17.040 - 16.982
Normal tooth thickness 0.000 - -0.021
Theoretical pin diameter 1.326
Actual pin diameter 1.372
Diameter at contact point 19.112
Chordal tooth thickness at pitch diameter 1.246
Actual chordal tooth thickness 1.246 - 1.224
Axial Tooth Thichness 1.247
Actual tooth thickness 1.247 - 1.226
Reference chordal height 0.791
Ron Volmershausen
Brunkerville Engineering
Newcastle Australia
http://www.aussieweb.com.au/email.aspx?id=1194181
RE: single start worms
Than you for your response.
My calculation above was nominal.
my high & low CTT is as follows.
.0491/.0483 which rounded off.
Thanks & Take Care
Mfgenggear