Save the planet. It's the only one with rum!
- NE London - UK
The pitch diameter of a helical gear increases slightly with the helix angle. So if you have two gears at fixed centres (perhaps on a common shaft as in a gearbox) you can fine-tune the mesh/backlash of the gears by increasing or decreasing the helix angle which will bring the gears closer or further into mesh.Can someone tell me whether gear helix angles are that unique to their application?
Sorry I can’t think of a better word to explain. The gear in Pete’s example using the calculator he has found has a helix angle of 15.15 degrees. Would this be something you’d encounter commonly? Why would this not just be 15 degrees? Pressure angles seem to be set to standard angles what does the extra .15 gain?
My naive first impression was that there would be the fixed gear sets for whole degrees (which I think is what it says in manual) and bobs your uncle helix away my friend.
(Apologies in advance for expressing an angular measurement in decimal hail Mary’s have been said)
westfalia or Alfa-laval?Off topic slightly, but I used to work on industrial centrifugal separators. They were driven by a worm gear running backwards. Typically driven off a 10kw or more motor driving a big bronze gear through a centrifugal clutch to the shaft that held the bowl with the worm gear on it. The bowl would weigh about 250kgs and spin at about 8000rpm. There was a lot of force on that worm gear! It took 3 minutes to get up to speed and eight to stop using the brake, or about half an hour if the operator forgot the brake...
Yep. You can dial in how much fat you want left in the milk, but usually they take all the cream out then add whatever amount back to the skimmed milk to make semi skimmed. We had a heap of machines doing raw palm oil, latex, some doing marine diesel plus assorted oddballs doing wine, recycling lube oil in a steel rolling mill etc etc. Oh and a couple cleaning viscose fibre out of caustic solution. They are a rabbit hole when you get into all the different types and uses.The ones I worked on had raw milk going in, cream and skimmed milk, and all kinds of sh1t coming out....