스크랩 bandsaw 밴드쏘 만들기 (펌)

[계수나무]

 Height:                77"
         Width:                 22"
         Depth:                31"
         Cutting Table:     20" x  21" 3/4" thick aluminum plate covered with 1/2" plywood.
         Motor:                1 1/2 Hp 110 VAC
         Blade Length:      130"
         Blade Speed        2400 FPM
         Weight:                Heavy
         Work light:          15 watt florescent dual tube
         Frame:                 Welded steel
         Exterior:              1/2" Sanded / Sealed / Painted plywood
         Colors:                Rust-oleum Hammered finish ( dark green & dark bronze ) 

Upper 18"  HDPE ( Plastic )wheel.
I found the pair of wheels at a local scrap yard and don't have
any idea what they were originally for. The wheels had an
automotive type hub / wheel bearing assembly already mounted.
 

Lower 18" wheel.
Rides on a fixed 1" shaft supported by two sealed ball bearings.
 
 

Front
 

18" HDPE ( Plastic ) wheel found at local scrap yard.
 
 

Steel hub with 2 roller bearings
I removed the automotive type tapered bearings and bored the
id of the hub to accept two 1" id sealed bearings.
 

The orange around the wheels are Urethane Band Saw Tires
from Suffolk Machinery
 
 

Built in fluorescent 15 watt light 
  
  

Blade tensioning system.
 
 
 

As the lever at the rear of the saw is turned it raises or lowers
the long bolt that in turn raises and lowers the upper wheel.
 

Top Axle
 
 

Tensioning handle on top of saw

                     Blade is tensioned here. The lever pressed                       Tension is released here. The saw will not start.
                     against a small micro switch and allow the
                     saw to run.  The micro switch is from the
                     door of a dishwasher.
 
 

The blade guide design was copied from my  4 x 6 metal cutting bandsaw.
The bearing studs are on a cam so the bearings can be adjusted for
blade thickness.
 

Lower bearing assembly
 

 
 

This is looking into the rear of the saw.
The saw sits on 4 rubber wheels.
The motor is  1 1/2 HP.

Bandsaw
Tensioning / Shaft Details
 
 

View with the top wheel removed
 

Another view with the top wheel removed
 
 

Blade tensioning mech. in the raised position
The 3/8" threaded rod raises the axle plate (not visible here)
The plate pictured here does not move and is welded to the frame.
 

Halfway position

Lowest position ( Blade tension is released )
 
 

The four outside 3/8" bolts have lock nuts.
The bolts fit loose to allow the axle backing plate to slide up and down.
There are slots that these bolts ride in seen in the next picture.
The 3 holes for the axle plate are not threaded.
 

Back view of the axle backing plate.
The 3 bolts in the center are for adjusting roll and yaw.
At the very top of the picture is where the 3/8" threaded rod is attached
to the axle backing plate. This threaded rod is what lowers and raises the upper wheel.
 
 

The upper axle is welded to a piece of 2 1/2" x 2 1/2"  x 1/2" thick steel plate.
It's hard to tell but the axle protrudes through the steel plate approx. 1/16" .
The plate has 3 threaded holes that when tightened can adjust the roll and yaw.
 
 

The upper axle. You will notice that it does not sit flat on the table.
 

My upper wheel has two sealed roller ball bearings that fit over the shaft.
 
 
 
 
 

Axle backing plate. Moves up and down to tension the blade.