FILENAMES:

roller01.jpg
roller02.jpg
roller03.jpg
roller05.jpg
roller06.jpg
roller07.jpg
roller08.jpg
roller09.jpg
roller10.jpg
roller11.jpg
roller12.jpg
roller13.jpg
roller15.jpg
roller17.jpg
roller18.jpg
roller19.jpg
roller24.jpg
roller25.jpg
roller27.jpg
roller28.jpg
roller29.jpg
roller30.jpg
roller.dxf

DESCRIPTION:

These are pictures and a drawing file for a shop built 
tubing bender/roller.

Posted by JR North <jasonrnorth@bigfoot.com>. 

The following description was provided:

=================================================================


Pics and notes on the construction of my tubing roller
for 7/8" stainless tubing. I built this roller specifically
for fabricating a new bimini frame for my boat, to adapt
a new canvas system to the Radar Arch I built for it.

The Roller uses a cheapy 4" drill press vise for the moveable
roller and acts as a base and frame for the assembly.
This vise must be a guide bar style as shown, which keeps the
moveable roller from lifting as pressure is applied.
The wheels are 4" solid Delrin castor wheels, machined and bushed.
The chassis plate is 1/4" CRS. The pins are 3/4" pull dowels. The
2 idler rollers use 2 1/2" pins, and the moveable roller uses a
3" pin. The moveable vise jaw is replaced with a piece of 1 1/4" 
steel bar, which is machined to fit the vise, drilled and tapped
for mounting, and drilled/reamed for the pin. 
The chassis plate has 2  3/8" thick square backup plates welded on,
which provide sufficient depth for pressing the idler pins.
Drill/ream the vise jaw and chassis plate for a very heavy press
fit of the pins.
The rollers have 1/8" steel plates for rigidity. They are drilled
and reamed for a snug fit of the 3/4" X 1 1/4" bronze bushings.
The Pics:
roller.dxf
01: Machining the roller plates to diameter
02: Various assembly components and one machined roller blank
03: Drilling the bolt pattern in the roller assemblies
05, 06, 07: Detail of method of mounting assembled rollers for
machining the radius.
08: Machining the chassis plate.
09: The new moveable vise jaw, drilled/reamed for the pin.  
10: Welding up the chassis plate.
11: Detail of the idler pin backup plates.
12: Chassis plate
13: Chassis plate
15: Finished roller plates, 3 upper and 3 lower.
17: The vise prepped for assembly.
18: A roller blank and result after machining.
19: 3 completed roller wheels.
24: Assembly
25: Assembly
27: Assembly
28: Assembly
29: Vertical mount on a sturdy pillar
30: Vertical mount on a sturdy pillar

JR North

Questions/comments:
jasonrnorth@bigfoot.com