Needs Pictures: 0
Picture(s) thanks: 0
Results 31 to 38 of 38
Thread: Small Hydraulic press - ideas
-
9th March 2015, 08:21 PM #31.
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 27,757
The turning of all those threads back and forth would be a bit slow and frustrating.
A set of HD toothed wheels on each threaded rod connected by a MC chain would speed things up a bit.
From the more knowledgeable here, if the thickness of the plate was increased to say 30-35mm, would the capacity of the press be increased? Or would it have to also include an increase in the diameter of the threaded screws? Curious minds etc...
Another thing, where would you buy thick plate in small quantities, and threaded rod from in the Melbourne area?
The other place would be at a metal scrap merchants.
-
9th March 2015 08:21 PM # ADSGoogle Adsense Advertisement
- Join Date
- Always
- Location
- Advertising world
- Posts
- Many
-
9th March 2015, 09:15 PM #32GOLD MEMBER
- Join Date
- Dec 2010
- Location
- Mornington Peninsula
- Posts
- 2,741
-
9th March 2015, 10:34 PM #33.
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 27,757
-
10th March 2015, 06:31 PM #34Senior Member
- Join Date
- Apr 2008
- Location
- Perth
- Posts
- 289
Small press
Hi Bob
I made one of them small presses back in 1987, company I worked for had an Enerpac one, I took a design off that particular model. Bought some channel, cant remember the size now, drilled holes to suit eithe size of the channel after cutting to my required length. Made the holding bits from the left over channel. I bought a 20tonne Enerpac ram and a pump to suit, had a fitter & turner machine up a threaded collar for the ram. All up with company discount on steel and Enerpac bits cost me back then just under $200. When I moved down to perth, took the enerpac bits, gave the press away.
Eight years ago I made a little 5 tonne one for a glass blower, who wanted to use it to fracture glass plugs before putting said bits into a furnace. Worked good, cept the glass blower never bothered to use the supplied canvas bag I shipped with the press to avoid shattered glass over her workshop. Mind boggles.
DD
-
13th March 2015, 07:26 PM #35GOLD MEMBER
- Join Date
- Dec 2010
- Location
- Mornington Peninsula
- Posts
- 2,741
I have been doing the sums on building one of the '100 ton presses', but just a little bit bigger to make it more practical.
The high tensile threaded rods in 36 mm diameter are $44/mtr each = $88
Eight (8) nuts at $5 each =$40
The steel plate at 40mm x 305mm x 305mm was $238.70 for two. Which has ruled out the project as a cheapie. (I did go around to engineering companies, however it appears that they do not have 'scraps' as they purchase to exact order).
Not sure what the machining costs would be to drill 8 holes and tap 4 holes, but assumed circa $50 - $100.
So guys it looks as if it is not going to happen.
-
13th March 2015, 08:33 PM #36.
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 27,757
What about screws jack like these.
38 mm diameter thread complete with nut, $17.50 each
http://buybuildingsupplies.com.au/sc...d-p-26640.html
The steel plate at 40mm x 305mm x 305mm was $238.70 for two. Which has ruled out the project as a cheapie. (I did go around to engineering companies, however it appears that they do not have 'scraps' as they purchase to exact order).
I did look at purchasing a couple of 400 mm x 40 mm discs (weight was about 40kg) at $1 a kg. shoulda, woulda, coulda . . . . . price was $1/kg
Not sure what the machining costs would be to drill 8 holes and tap 4 holes, but assumed circa $50 - $100.
-
13th March 2015, 09:00 PM #37GOLD MEMBER
- Join Date
- Dec 2010
- Location
- Mornington Peninsula
- Posts
- 2,741
Bob, I could fudge around the cost of the rods, nuts and even machining. But the steel cost floored me...
Oh well, another day perhaps.
-
20th March 2015, 06:37 PM #38GOLD MEMBER
- Join Date
- Dec 2010
- Location
- Mornington Peninsula
- Posts
- 2,741
Happened to be at my local scrap merchants today (buying, you know, groceries etc ) and saw a lump of 20 mm plate.
Long story short, it followed me home.
Whilst I was originally looking for 30-40mm plate for the press, I thought that I could double weld two (2) 20mm plates together to achieve 40mm thickness. The 36mm threaded rod that I was considering is rated at 8.8.
The questions are:
1. Is this an option to achieve a greater press capacity in tonnes?
2. Are the number of rod threads in the plate critical?
3. Whats more important to increase capacity of the press - the thickness of the plate with a greater number of threads or the thickness of the high tensile threaded rod?
Similar Threads
-
any ideas to weatherproof small verandah??
By Reno RSS Feed in forum GENERAL ODDS N SODSReplies: 0Last Post: 6th February 2013, 06:00 PM -
Sankyo hydraulic press 15 tonne
By Kidbee in forum METALWORK FORUMReplies: 3Last Post: 22nd October 2012, 08:48 PM -
Hydraulic Press Jigs
By Oldneweng in forum METALWORK FORUMReplies: 4Last Post: 1st July 2012, 09:25 PM -
Mini Drill press ideas?
By Malfie in forum HAND TOOLS - POWEREDReplies: 6Last Post: 21st July 2011, 02:14 PM -
Pen Press ideas needed
By jenlwren in forum WOODTURNING - PEN TURNINGReplies: 23Last Post: 11th February 2009, 09:31 PM