Colbourne, 1987: "all the geometric relations for a spur gear can be applied to the transverse section of a helical gear".
This is consistent with comment by leisure17.
We therefore calculate the "true" base diameter from the transverse geometry.
When rating the bending strength we use a...
Colleagues
I have a helical gear. A helical gear has a normal pressure angle which is different to the transverse pressure angle. The tooth profile in the normal plane is an involute.
Question 1:- Is the tooth profile in the transverse plane also an involute?
Question 2:- Is the base diameter...
Does anyone know the number of the DIN standard (or other German standard) which gives the recommended backlash for spiral bevel gears?
JWC
Mechanical/Structural
Brisbane, Australia
yes the module I have given is halfway along the tooth face, if necessary I can give you the outer normal module which is in the 8-9 range
JWC
Mechanical/Structural
Brisbane, Australia
thank-you kindly for the above responses - however, I have AGMA and ISO requirements, what I am interested in is DIN or Klingelnberg backlash recommendations......
JWC
Mechanical/Structural
Brisbane, Australia
Would like advice on minimum recommended backlash for spiral bevel gears having normal module about mn=10 mm (Dp~2.5). Power around 1000 kW and speed around 1500 rpm. DIN backlash requirement? Klingelnberg backlash requirement? If possible could you please give your reference source as I want to...
hi Folks
Could anyone help me find a code that specifies welding procedures, welder qualification and defect acceptance criteria for 316 stainless steel.
kind regards
JWC
Mechanical/Structural
Brisbane, Australia
Apparently they've bought the steel already. I understand we're changing to flame hardening now, which seems appropriate. This is a pinion with an OD = 12" and face width 5". Gear specification probably Q8-A-FA14. How does that sound?
JWC
Mechanical/Structural
Brisbane, Australia
Hi Folks
I am dealing with some fellows who want to case carburise 4140 for a pinion for a slew gear. I thought this is too high in carbon for case carburising.
Secondly 4140 being low on the hardenability compared with something containing Ni - could the core hardness be a problem?
JWC...
According to what I have studied, the longitudinal and the vertical (or transverse) shear stress are equal and are complimentary stresses so I can't see what would lead you to say that only one of them is significant.
Say I have a steel angle section and I weld a rather heavy piece of steel plate to the flange and I want the section to behave as a composite section. I have to size the weld connecting the two pieces to be able to transfer the longitudinal shear stress. However I note that there is also a...
