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Thread: #1 bench
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16th October 2010, 08:08 PM #1
#1 bench
thats teh gist of what im mking, i baught some tct blades up to 36", secondhand, skip tooth blades, got a new 42" 50 tooth blade priced $1200.00 so i might do that if it works well.
made a start today.
was able to collect up most of teh bits i needed from round the place.
i have
1 1/2 " shaft spindle with a antclockwise thread. (perfect as tractors pto runs anti clockwise)
1 3/8" toyota hilux rear axle shaft. for power shaft, have to get 6 tooth spline cut on one end, the wheel end will have a drum, actually a split rim, on it and be teh friction drum for the carriage movement.
1" drive shaft for feed spindle friction end, have 250mm wheel one end and 2 1/2" pulley the other.
3/4" shaft for feed, 6" pulley on the one end and i need to put a drum for the carriage pull cable on the other.
i still need,
1 x 10" 3 spb pulley (1 3/8" taperlock center)
1 x 4" 3 spb pulley (1 1/2" taperlock center)
1 x 76 " x 2" flat belt
3 x 82" b section V belts
1 x 40" A section V belts
1 x 1 3/8" pillow block bearing
3 x 3/4" pillow block bearing
1 x hilux rear axle bearing.
8 x 3/8" bore sealed bearings
70' 1/4" wire rope.
2 x pulley blocks
i still have to make
drum for wire to wind onto.
carriage
4 x wheels to run on train track
10 x idler rollers
and i have to get a 6 spline cut on the hilux axle.
not to bad really.
clear as mud what im doing hay?
ill do a drawing to explain.
so this hopefully will make it clearer ish.
the yellow shaft is where the tractor attaches,
(orange)3 belts go from a 4" pulley there up to a 10" pulley on the spindle input speed is 400 rpm @ 1 : 2.5 that has teh blade at 1000rpm. witch gives about 9000-10 000 fpm tip speed.
(blue) as teh drive shaft is a hilux axle there is a hub on the end, a hylux split rim goes on there, its 16" diameter, and teh other blue wheel is a 10" cast wheel with inner tube stretched over it for grip, a 2" wide flat belt, then the blue wheel is moved up it rubs on teh drum and turns clockwise when its pushed down it tightens the belt and goes anticlockwise.
the other end of that shaft (red) has a 2.5" pulley, that drives down to a 6" pulley on teh end of the feed drive shaft (red)
so gearing there is 1:1.6 increase then 1:2.4 reduction so it ends up being 1:1.5 reduction.
so input is 400rpm feed spindle is doing 266rpm. on a 1.5" drum its doing 100 fpm max feed.
if thats to fast i can just change the pulley ratio of add some more layers of rubber to teh friction wheel.
that makes it perfectly clear dont it.
www.carlweiss.com.au
Mobile Sawmilling & Logging Service
8" & 10" Lucas Mills, bobcat, 4wd tractor, 12 ton dozer, stihl saws.
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16th October 2010 08:08 PM # ADSGoogle Adsense Advertisement
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16th October 2010, 10:51 PM #2.
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16th October 2010, 11:24 PM #3
oh its half built.
iv done almost all i can until i get the remaining parts.
i managed to get the bearing of the hilux axle this arvo, they are a press fit i have to heat it and belt it with the block spliter to get it off. need a new bearing for it now.
will take that in monday to get spline machined, and pick up teh last parts,
also need 4 track wheels duno where i can get them thow.
www.carlweiss.com.au
Mobile Sawmilling & Logging Service
8" & 10" Lucas Mills, bobcat, 4wd tractor, 12 ton dozer, stihl saws.
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17th October 2010, 11:37 AM #4.
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Well then that's more than enough to show some pics then
Seriously it's good to see some pics along the way rather than just showing the finished product because some stuff gets hidden on a finished product.
Whenever I reckon something is half built its probably about 1/4 built, and even when I reckon I've finished there's always one or two more things to do.
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17th October 2010, 01:16 PM #5
i took some pics this morning not mutch to show its just rhs welded up
teh main frame is done. im working out shat positions now. iv run into a few snags with that, my hilux rim is to big diamiter and dosent leave room for the otehr wheel, so iv found a 10" pulley off the old chaff cutter that ill bush up to fit.
it will work better anyhow,
once i get the bits i need on monday ill be able to put all teh shafts on and have the head working, then i just gota put it in place lay out the track and build the carrigge.
still undecided on wht sort of headblock to have on it thow.
more pics when i get the shafts siting right.
www.carlweiss.com.au
Mobile Sawmilling & Logging Service
8" & 10" Lucas Mills, bobcat, 4wd tractor, 12 ton dozer, stihl saws.
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17th October 2010, 02:29 PM #6
here you can see that with the split rim on there isnt enough clearance underneath. as teh pulley needs to drop/raise about 70mm to tention belt or run on rim.
Attachment 150469
Attachment 150470
so i got this 250mm pulley to go on the shaft. its got a 50mm bore and the end of the shaft is 40mm so ill get them to bush it out when i get the spline cut on the end.
Attachment 150467
Attachment 150468
be putign teh smaller pulley on it means i can lift it up, and put it threw teh rails, witch meas i gain about 7" or more underneath.
www.carlweiss.com.au
Mobile Sawmilling & Logging Service
8" & 10" Lucas Mills, bobcat, 4wd tractor, 12 ton dozer, stihl saws.
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18th October 2010, 08:09 PM #7Senior Member
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Coming along well - I'll have to see it when it's angry though
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18th October 2010, 08:29 PM #8
got the last of the bearings today.
and 2 of the 5 belts i need.
will make some progress when i get time maby tomorrow arvo.
can mount the shafts ...... no i cant i forgot to get bolts.
www.carlweiss.com.au
Mobile Sawmilling & Logging Service
8" & 10" Lucas Mills, bobcat, 4wd tractor, 12 ton dozer, stihl saws.
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18th October 2010, 11:03 PM #9SENIOR MEMBER
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I'm just wondering how it will work succesfully & why a bench with trolley set up would not be considered. With a lot of mills closing down they are not hard to come by for a few K.
regards inter
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18th October 2010, 11:29 PM #10
what type of bench are you talking about?
i considered a floating top bench, but went this way instead.
it will work just like any of the old o even new headsaws work.
just like a medows mill - dad used to have one of them then we baught a kara 2000 and about 12 weeks latter teh council shut us down.
same setup as a frick mill.
[ame=http://www.youtube.com/watch?v=PRzzeonznGg&feature=related]YouTube - Frick Sawmill[/ame]
also see
Canadian Farm Saw
www.carlweiss.com.au
Mobile Sawmilling & Logging Service
8" & 10" Lucas Mills, bobcat, 4wd tractor, 12 ton dozer, stihl saws.
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19th October 2010, 12:04 AM #11SENIOR MEMBER
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Thats live sawing on a breakdown type carriage saw, not really successfull on high tension Aust' HWDS.
regards inter
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19th October 2010, 12:15 AM #12
breakdown process is teh same for hardwoods no matter what saw you use. sept a mobile where you have to work backwards.
#1 saw breaks the logs down #2 saw mills them into boards. #3 resaws small peices.
still unsure of what kinda saw your thinking of inter.
www.carlweiss.com.au
Mobile Sawmilling & Logging Service
8" & 10" Lucas Mills, bobcat, 4wd tractor, 12 ton dozer, stihl saws.
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19th October 2010, 10:18 PM #13SENIOR MEMBER
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I'm not much good with numbers or whatever when it comes to saws because as we can see it changes from place to place, mill to mill, state to state. From my experience in traditional small mills there is a breaking down rig consisting of a log dogged to a carriage passing by either a bandsaw, single or double circular saws, like the youtube video above, except that for Australian Hardwood logs of an average size the saw will pass as close to the heart leaving it out of the slab, then the log is rolled onto the cut face & passed by the saw again as close the heart, this is repeated untill a square baulk is left containing only heartwood. Slabs of a managble size are sent on green chains or oiled skids to a resaw breast bench with trolleys either side. If it was a larger setup there would be 2 resaw benches, the first bench just sizing & straightening the flitches then the next just ripping into boards or whatever is required. This milling method is called sawing around which relieves most of the tension of the finished sawn timber.
What was shown in the video is what is called live sawing, which is sawing from the outside of a log board by board to the heart. Might be good for timbers other than Aust' HWDs. If you were to do that type of cutting on our HWDs the boards will all spring away from the heart just like cutting them with a swing mill, thats why I can't understand how that saw setup is going to do anything more than the lucas mill you have already.
regards inter
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19th October 2010, 10:48 PM #14
i was not suggesting to cut like in teh vid i was just showing the style of saw.
the entire process can be done on a small #1 bench but its faster with multiple benches.
the #1 benches at high production mills work on a crew of about 5 people, 2 benchman, a hobman, a tailorout and a pullout. i have seen these mills wiht 150hp 3 phase motors running them and you couldnt run as fast as teh log goes threw the saw.
first job for this one will be squaring pine logs for my veranda rails, i also have a lot of square posts to cut.
then i might get time to do up one of the old #2 benches. so we can up production.
www.carlweiss.com.au
Mobile Sawmilling & Logging Service
8" & 10" Lucas Mills, bobcat, 4wd tractor, 12 ton dozer, stihl saws.
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19th October 2010, 11:21 PM #15SENIOR MEMBER
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