Using the idea of the hydraulic cylinders would be very hard to do. there would have to be 22+ cylinders acting at the exact same time to handle the punching rate, plus the insanely large power station like u mentioned.
If 35 strokes/minute is a 'standard' punching rate for a 600 ton or lower...
Hi, my company is looking into designing a press capable of punching twenty two(22) 3/8 dia holes spaced 2.5 inches apart(picture a flange bearing hole pattern) through 10 gage steel 140 times per minute. calcs make this approx. a 140 ton press.
We are looking for a viable option such as 22...
Hi, my company is looking into designing a press capable of punching twenty two(22) 3/8 dia holes spaced 2.5 inches apart(picture a flange bearing hole pattern) through 10 gage steel 140 times per minute. calcs make this approx. a 140 ton press.
We are looking for a viable option such as 22...
Everyone, It turns out in the end that 14.5 degree spur gears with the larger face width and dropping a tooth on either gear is the best i'm going to be able to do. This is also the simplest and best solution to this problem since there is such little room in the gearbox to add anything such...
Was just talking to my boss about a few of these ideas. To his knowledge both 20 degree pressure angle spur gears and helical gears will not make this any stronger. This is because the gears are operating so slowly (approx 10 rpm).
Does anyone have a rebutle to what i've just been told??
MikeHalloran,
You've pictured perfectly our roll-forming machine we manufacture for the corrugated steel piping industry. If we get the go ahead for a new design of this machine i'm looking into using that setup.
I agree completely with you that this machine was made on the cheap side although...
Dimjim, I wouldn't bother with any calculations at all. I'm just looking for the strongest working solution for this problem since even when that is found, it will probably still be underdesigned.
Dropping a tooth on each gear. I don't see a problem with that if i stick with spur gears, but...
Strokersix, your on the right track for your visualisation. picture a 2X5 array of shafts. 5 stations each with an upper and lower shaft. each has respective tooling on it forming the sheet metal more a each pass.
Yes, there is a relationship between the tooling diameters and the gearing...
That high force is not due to impact loading. Impact loading would make it greater and if the machine is operated correctly there should be smooth movement at all times. It is actually the force (approximated, not calculated)that may occur just from the drive system. 4Hp variable speed electric...
Hi, I'm curious as to why a normal hot rolled A-36 plate sweats during a burning process.
there are 2 ideas in the shop right now.
A) moisture from the atmosphere plays a role in the temperature transition of the material.
B) the is moisture in the plate(stored outside) and that is leaving the...
drawoh, i wasn't thinking correctly when i answred your previous question. but still, there is no room in the gear box for such and application. thx for the input.
dimjim, the driving gear is 4.5PD, 4 DP with 18T, and the driven gear is 6PD, 4DP with 24T.
There are currently 6 passes to...
drawoh,
the moving idler wouldn't work.
the 2 gears where the centre distance is changing are mounted to shafts with tooling on it. one shaft is rigid, the other shaft must be adjustable to allow different sheet thicknesses to be processed, therefore the gear must move aswell.
DM
dimjim,
no, it is not a long addendum gearing, just change of centre distance during operation/setup.
the center distance depends on the material gage being used.
for a job, one gage thickness will be used and the machine will be set. example center distance of 5.5", but due to un-uniform...
automatic2, I thought of that when they first started failing. only problem is the gear box is so tiny it may be impossble to install the helical gears. There are many bad design areas to this machine and has caused nothing but problems so far.
I will look into the helical gears further to...
