I'm heating a part made from 8620 steel for a shrink fit assembly. At around 400F the part starts to change color.
I'd like to be able to track its temperature by its color and without depending on the oven's gage.
I heard from some coworkers that there is a chart for steel that gives you a...
Got it. We ended up subcontracting the design to a specialized gear/spline designer. Then we supplied the design to a gear shop and they will make the parts for us. Thank you.
Actually we are considering this solution for 50 units. However, if the first few assemblies don't go well, we'll have to find another solution.
We'll be attempting the first assembly on the third week of December. I'll let you know how the assembly goes. Thanks for all your suggestions and ideas.
We'll be attempting the first assembly on the third week of December. I'll let you know how the assembly goes. Thanks for all your suggestions and ideas.
We ended up subcontracting the spline design to a designer who provided us with final drawings including dimensions, spline details and heat treatment. Thanks for your replies.
israelkk, the shaft OD is 48mm. The free length is 135mm. The splined bsuhing OD is 60mm. Torque is 740 N.m. The bushing is made from 8620 steel. The interference amount is 0.002".
PeterCharles,We cannot support the other end of the shaft due to the nature of the assembly.
Foets, we are...
EdStainless, your assumption is correct; the ID is smooth and the OD is splined. Shaft is steel 41CrS4v and the bushing is 8620. The shaft OD is 48mm.
redpicker, heating the hardened bushing to 570F will bring the hardness down to around Rc53. The spline teeth start at least at Rc 58 and we'd...
We are trying to shrink fit a splined bushing onto a rotating shaft. To be able to transmit the application torque thru the shrink fit connection, both shaft and bushing are machined to very close tolerances.
The bushing needs to be heated as high as possible (no more than 300C/570F) to achieve...
The shaft is part of an electric motor and we are concerned that a press fit might load the bearings in a nonfavorable way. I don't recall the pressure needed but I doubt that the motor allows that kind of thrust pressure on it bearings.
We are trying to shrink fit a splined bushing onto a rotating shaft. To be able to transmit the application torque thru the shrink fit connection, both shaft and bushing are machined to very close tolerances.
The bushing needs to be heated as high as possible (no more than 300C/570F) to achieve...
l3city: that might be an option. May be I should throw that at the Motor supplier or account for it in our system.
IRstuff: that would be perfect, but we cannot do that on that vehicle. Regards.
We have a permanent magnet AC motor on a vehicle. When the vehicle is being towed, the motor might induct current. Is there is a way to prevent this from happening without disengaging the mechanical connection between the wheels and the motor? Thanks.
I asked our Generator supplier to make the input shaft splined with a 15T 8/16 spline to easily mate them with the gearbox and now they are asking me for a detailed drawing of that spline profile. Does anybody know how or where can I find that drawing? Is it included in the ANSI B92.1 Standard...
How do I size and a select the right spline for a certain application? I know the torque, rpm and a starting shaft size. Any design books you can recommend? Thanks.
When we first started this project we were interested in finding a consultant to do the analysis, which we did. At this stage we evolved into looking for an in-house solution and hence the shift in our focus. Thanks everybody for your responses.
We had a demo from CFDesign and considering that we are a ProE house, it seems to fit us well. But may be we should see others too. Thanks for all your replies.
Gentlemen, thanks for your responses. I did a test as JIM317 suggested and it turned out that the material shrinkage was negligible. It seems that the material was stretched when applied and that caused the apparent shrinkage.
