Home |
Search |
Today's Posts |
|
Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to rec.crafts.metalworking
|
|||
|
|||
EMT conduit bending
"Rich Grise" wrote in message ... Tom Gardner wrote: I have an application that I will need to put a 30deg. and 75deg. bends on the same plane on a 30" length of 1/2" EMT. This will be a production part. Is there a machine to do this? Has anybody seen internal or external plastic caps for conduit? This will be a handle for a cleaning tool. I could do it on a punch press but that sounds just plain frightening. Or, are there off-shelf dies I could use on my 50-ton hydraulic press? (seems like overkill and it's slow) If it's for production, it might be worthwhile to farm it out. Or you could get a conduit bender at your local Builder's Euphorium and do them by hand, but that sounds like a money-loser. I've seen professional tube bending machines, and they were pretty awesome; they could make those bends in a matter of seconds, once it's set up. Good Luck! Rich I've been researching all night and have had a series of epiphanies. I figure about 4k pieces/mo and with a bit of futzing in the shop I think I can do the whole thing in-house...cheap! Made in the USA baby, by American union people! The friggin' Chinks can kiss my hairy ass! |
#2
Posted to rec.crafts.metalworking
|
|||
|
|||
EMT conduit bending
Tom Gardner wrote:
I've been researching all night and have had a series of epiphanies. I figure about 4k pieces/mo and with a bit of futzing in the shop I think I can do the whole thing in-house...cheap! ... Attaboy! I knew you couldn't resist the chance to build a machine to do it. I know I couldn't. Lessee ... the cut-to-length piece is placed/dropped* on the bender. A hydraulic clamp grabs it between the 2 bend points. Hydraulic cylinders push rollers or shoes to bend the pipe against dies. The piece is unclamped and lifted/popped* out. Maybe 5 second cycle. The rollers/shoes are on arms the same radii as the bends/dies so the hydraulic pusher doesn't have to worry about the motion path. 'Course there's a gazillion details to work out, but that's the fun of it. Hey, can I come work for you building this? Bob * - it seems like straight, 30" pieces of 1/2" conduit could be automatically fed from a hopper. And the bent piece popped out into a basket. Totally automated. |
#3
Posted to rec.crafts.metalworking
|
|||
|
|||
EMT conduit bending
Bob Engelhardt wrote:
Tom Gardner wrote: I've been researching all night and have had a series of epiphanies. I figure about 4k pieces/mo and with a bit of futzing in the shop I think I can do the whole thing in-house...cheap! ... Attaboy! I knew you couldn't resist the chance to build a machine to do it. I know I couldn't. Lessee ... the cut-to-length piece is placed/dropped* on the bender. A hydraulic clamp grabs it between the 2 bend points. Hydraulic cylinders push rollers or shoes to bend the pipe against dies. The piece is unclamped and lifted/popped* out. Maybe 5 second cycle. The rollers/shoes are on arms the same radii as the bends/dies so the hydraulic pusher doesn't have to worry about the motion path. 'Course there's a gazillion details to work out, but that's the fun of it. Hey, can I come work for you building this? Bob * - it seems like straight, 30" pieces of 1/2" conduit could be automatically fed from a hopper. And the bent piece popped out into a basket. Totally automated. Or you could find a way to use a couple Imperial 600-F: http://stridetool.com/tools/hose_tub...enders_08.html (Thassa nice tool) --Winston |
#4
Posted to rec.crafts.metalworking
|
|||
|
|||
EMT conduit bending
Winston wrote:
Or you could find a way to use a couple Imperial 600-F: http://stridetool.com/tools/hose_tub...enders_08.html .... Yeah, and on sale here for only $1700: http://www.csnstores.com/Imperial-St...F-OHP1131.html |
#5
Posted to rec.crafts.metalworking
|
|||
|
|||
EMT conduit bending
Bob Engelhardt wrote:
Winston wrote: Or you could find a way to use a couple Imperial 600-F: http://stridetool.com/tools/hose_tub...enders_08.html ... Yeah, and on sale here for only $1700: http://www.csnstores.com/Imperial-St...F-OHP1131.html At 4K pieces per month, that $1700 is chump change. Automated properly, one could bang out those handles quickly and with excellent quality using minimum - wage help. Drop in one end against the first stop, push buttons and the workpiece gets the 75 degree bend. The stop and bender reset and the workpiece falls into a bin. Twist a knob and cycle the bin full of parts against the second stop. The 30 degree bend is made and the workpiece is retrieved out the top of the alignment fences. Worker loads the next workpiece and bangs the buttons to complete the bin of parts, etc etc. --Winston |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
conduit bending | UK diy | |||
Bending 20mm Round Electrical Conduit | UK diy | |||
Bending handbook was:tight radius bends in conduit | Metalworking |