Difference between revisions of "Johnson Bandsaw"

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(List of Currently Authorized Users)
m
 
(98 intermediate revisions by 67 users not shown)
Line 11: Line 11:
 
|value = 700
 
|value = 700
 
|image =JohnsonMetalBandsaw.jpg
 
|image =JohnsonMetalBandsaw.jpg
|hostarea = Coldmetals
+
|hostarea = Cold Metals
 
}}
 
}}
  
 
== Status ==
 
== Status ==
 
+
* A VFD has been fitted, this allows the machine to run on a 110v circuit and provides a variable speed control. The display shows the RPM of the drive wheel (16") * 4 which is approximately blade speed in FPM. The power switch on the left side of the control box applies power to the VFD. The on/off button on the front panel and the limit switch control the blade, the button must be out for on and the limit switch up to run. The button switch serves as an emergency switch, pull for on push for off. The dial controls RPM.  
* One phase of the starter is working intermittently. We cleaned the contacts of the starter, but this didn't fix the problem. If the motor is making noise and not turning, turn the starter on the back of the saw 'off' and then 'on. If the problem persists, leave the saw off. We should replace the starter.
+
      - Jim Brink 12/10/16
  
 
* The large groove (fastest speed) of the motor shaft step pulley is bent.  The motor vibrates excessively when the belt is in this groove.  Use the other grooves (slower speeds) until the pulley is replaced.
 
* The large groove (fastest speed) of the motor shaft step pulley is bent.  The motor vibrates excessively when the belt is in this groove.  Use the other grooves (slower speeds) until the pulley is replaced.
  
'''This tool requires certification for use.'''
+
'''This tool requires authorization for use.'''
  
 
Johnson products are now supported by Dake. http://www.dakecorp.com/ Replacement parts for this saw are generally available.
 
Johnson products are now supported by Dake. http://www.dakecorp.com/ Replacement parts for this saw are generally available.
Line 33: Line 33:
 
|-
 
|-
 
|Blade Speed
 
|Blade Speed
|35, 90, 130, 190 FPM
+
|FPM = RPM of drive wheel* 4.18
 
|-
 
|-
 
|Power
 
|Power
|240V, 3 phase
+
|120V via VFD, motor is 3/4HP,240V, 3 phase
 
|-
 
|-
 
|Weight
 
|Weight
Line 57: Line 57:
 
Add blade brush.
 
Add blade brush.
  
Put FPM from the machine's sticky note on here.
+
Post a chart of recommended blade speeds for various materials.
  
 
== Maintenance ==
 
== Maintenance ==
{| class="wikitable" border="1"
+
[[Johnson_Bandsaw_maintenance | maintenance page]]
! Description
+
 
! Frequency
+
== Major Components ==
! Lubricant
 
! Instructions
 
! History
 
|-
 
|Hydraulic cylinder
 
|Maintain level at top of oil cup.
 
|
 
|
 
|
 
|-
 
|Gear Box
 
|yearly
 
|80W-90 gear oil
 
|Drain and fill with 3 ounces of oil.
 
Requires removing gearbox. See below.
 
|2/14 8 oz 85W90
 
|-
 
|Pivot bar
 
|monthly
 
|General purpose grease
 
|2 Zert fittings.  Use grease gun.
 
|
 
|}
 
Gearbox oil change. Loosen 2 screws on the left edge of right top cover. Remove top 2 screws on the right side. Loosen bottom 2 screws on the right side cover. Slide top cover towards the center of the saw. Pivot the right cover down. Remove drive belt. Remove gearbox step pulley. Remove 3 bolts holding the gearbox. These are near the ring gear teeth. Remove the gearbox out the top of the saw between the two transverse brackets (long shaft comes out last). Drain/fill bolt is on the side opposite the pinion gear. Consider replacing the gaskets on the gearbox.
 
  
 +
<gallery>
 +
File:johnson-bandsaw-main-power-lever.jpg|The main power lever; currently, does not tend to automatically disengage when the saw fully closes
 +
File:johnson-bandsaw-control-panel.jpg|The motor control panel; note: the blade speed readout, the emergency stop button, & the speed control knob
 +
File:johnson-bandsaw-power-plug.jpg|The 110/120V plug on the end of the power cord, attached to the control panel
 +
File:johnson-bandsaw-descent-control-weight.jpg|The descent control weight; the lever unlocks the weight for repositioning
 +
File:johnson-bandsaw-main-spring.jpg|The main tension spring; provides descent resistance, controlled in part by the adjustable weight
 +
File:johnson-bandsaw-hydraulic-valve-control.jpg|The valve control knob for the hydraulic cylinder; controls descent resistance, & can lock the saw open
 +
File:johnson-bandsaw-hydraulic-cylinder.jpg|The hydraulic cylinder, controlled by the needle valve (bottom), which is controlled by the valve control knob; provides descent resistance
 +
File:johnson-bandsaw-builtin-vice.jpg|The fixed (left) & movable (right) jaws of the built-in vice; note also the screw engagement lever, to the right of the movable jaw, and the clamping screw, visible through a slot to the right of the engagement lever
 +
File:johnson-bandsaw-vice-clamping-screw-engagement-lever.jpg|The vice clamping screw engagement lever; note also the clamping screw, visible to the right
 +
File:johnson-bandsaw-vice-control-wheel.jpg|The vice clamping wheel; opens & closes the vice, when the movable jaw is engaged with the clamping screw
 +
File:johnson-bandsaw-blade-guides.jpg|The yellow movable (left) & fixed (right) blade guides; note also the built-in vice
 +
File:johnson-bandsaw-movable-blade-guide-lever.jpg|The movable blade guide control lever; used to control the length of the exposed area of blade
 +
</gallery>
  
 
== Auth/Use Notes ==
 
== Auth/Use Notes ==
Line 93: Line 83:
  
 
* Horizontal band saws cut via a vertically descending blades.
 
* Horizontal band saws cut via a vertically descending blades.
* The cutting tooth speed is set by a pulley in the rear.
+
* The cutting tooth speed is set by a pulley in the rear and VFD.
 
** Lift up on the motor to get some slack on the belt.
 
** Lift up on the motor to get some slack on the belt.
 
** Don't cross wheels; keep the pulley belt straight.
 
** Don't cross wheels; keep the pulley belt straight.
Line 100: Line 90:
 
** Be gentle with the needle valve; a single finger with light pressure is enough to adjust it.
 
** Be gentle with the needle valve; a single finger with light pressure is enough to adjust it.
 
* Power
 
* Power
** The plug is a twist-lock 220V three-phase plug.
+
** as of 12/16 a Fluxmaster 50 VFD has been added, for more information on the Fluxmaster see the link in resources. The machine is now powered by 120v. Any 120 volt outlet can be used.  
** The starter is located on the back. If you turn on the machine and it makes a buzzing noise, turn it off immediately and turn off/on the starter.
+
** Power to the VFD is controlled by the toggle switch on the left of the control box.
** During use, the on/off switch at the end of the machine is used for power. The trip lever also activates this same switch.
+
** The button switch on the front and and the trip lever control the motor. The button must be pulled out and the trip lever up. Both must be 'on' to power the motor.  
 +
** RPM is controlled by the dial and the belt position.
 +
** The large display shows approximate blade speed in feet per minute.  The smaller display on the VFD shows the output frequency of the VFD and is not needed for operation.
 
** Turn off switches and unplug the machine when you're done to prevent accidental activation.
 
** Turn off switches and unplug the machine when you're done to prevent accidental activation.
 
** Never walk away from the machine while it's running. We are not a production shop; babysit the machine in case it fails and avoid putting curious people in danger.
 
** Never walk away from the machine while it's running. We are not a production shop; babysit the machine in case it fails and avoid putting curious people in danger.
 
* Clamping a workpiece
 
* Clamping a workpiece
** Short pieces cock the vice jaws. This ruins the grip on the workpiece and is to be avoided.
+
** Short pieces cock the vice jaws. This ruins the grip on the workpiece and is to be avoided. Componensate by using a block approximately the size of your workpiece or a machinist jack on the far side of the vise jaws.
** Use a similarly wide piece on the other side of the vice jaw to prevent the jaw from cocking.
 
 
** Check the width of your workpiece against the teeth.
 
** Check the width of your workpiece against the teeth.
 
*** The thinnest section of the workpiece should be wider than three teeth in a row.
 
*** The thinnest section of the workpiece should be wider than three teeth in a row.
Line 118: Line 109:
 
** Never leave the machine while running. We aren't a production shop; you need to be right by the machine in case something goes wrong or if a curious person walks by.
 
** Never leave the machine while running. We aren't a production shop; you need to be right by the machine in case something goes wrong or if a curious person walks by.
 
* Clean up when you're done. Don't leave stock in the machine; don't leave chips and coolant behind. Use a small bucket to catch chips before they hit the ground.
 
* Clean up when you're done. Don't leave stock in the machine; don't leave chips and coolant behind. Use a small bucket to catch chips before they hit the ground.
 
 
  
 
== References ==
 
== References ==
Line 127: Line 116:
 
http://www.dakecorp.com/manuals/Model%20Johnson%20J%20Saws.pdf
 
http://www.dakecorp.com/manuals/Model%20Johnson%20J%20Saws.pdf
  
 +
Good link for restoration, including coolant pan dimensions and bearing sizes. http://www.shopfloortalk.com/forums/showthread.php?t=21021
  
Good link for restoration, including coolant pan dimensions and bearing sizes. http://www.shopfloortalk.com/forums/showthread.php?t=21021
+
Manual for Fluxmaster 50.
 +
 +
https://www.tecowestinghouse.com/Manuals/FM50%20Instruction%20&%20User%20Manual_0405.pdf
 +
 
 +
Rebuilding video series
 +
https://www.youtube.com/watch?v=TEq7_pH7Uws
  
 
== List of Currently Authorized Users ==
 
== List of Currently Authorized Users ==
Line 134: Line 129:
 
! Qualified Member
 
! Qualified Member
 
! Trained By
 
! Trained By
 +
! Date
 
|-
 
|-
 
|Dean Anderson
 
|Dean Anderson
 +
|
 
|
 
|
 
|-
 
|-
 
|Todd Allen
 
|Todd Allen
 
|Ed Bennet
 
|Ed Bennet
 +
|
 
|-
 
|-
 
|David Morton
 
|David Morton
 
|Anna Yu
 
|Anna Yu
 +
|
 
|-
 
|-
 
|George Shaw
 
|George Shaw
 
|Thomas Wright
 
|Thomas Wright
 +
|
 
|-
 
|-
 
|bandit Gangwere
 
|bandit Gangwere
 
|Ed Bennet
 
|Ed Bennet
 +
|
 
|-
 
|-
 
|Michael Skilton
 
|Michael Skilton
 
|Tucker
 
|Tucker
 +
|
 
|-
 
|-
 
|Eric Stein
 
|Eric Stein
 
|Tucker
 
|Tucker
 +
|
 
|-
 
|-
 
|Kyle Bieneman
 
|Kyle Bieneman
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Scott Little
 
|Scott Little
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|RJ Metzger
 
|RJ Metzger
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Giovanni Arroyo
 
|Giovanni Arroyo
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Mark C.
 
|Mark C.
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Joao Santos
 
|Joao Santos
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Nicholas Haldereman
 
|Nicholas Haldereman
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Doorman Dave
 
|Doorman Dave
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Stephen Ioannou
 
|Stephen Ioannou
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Lucas Goossen
 
|Lucas Goossen
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|[[user:RogerMoore|Roger Moore]]
 
|[[user:RogerMoore|Roger Moore]]
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|[[User:Mwilkens|Matt Wilkens]]
 
|[[User:Mwilkens|Matt Wilkens]]
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Rhonda Jackson
 
|Rhonda Jackson
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Matt Meshulam
 
|Matt Meshulam
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Kevin Pulver
 
|Kevin Pulver
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Andrew Camardella
 
|Andrew Camardella
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Mike Coriale
 
|Mike Coriale
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|John Farmer
 
|John Farmer
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|[[user:Jaypee|Jay Pee]]
 
|[[user:Jaypee|Jay Pee]]
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Sam Paris
 
|Sam Paris
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Jake Rush
 
|Jake Rush
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Carolyn Ignacio
 
|Carolyn Ignacio
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Andrew Sowa
 
|Andrew Sowa
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Hilary Lee
 
|Hilary Lee
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Eric Slehofer
 
|Eric Slehofer
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Sam Reicks
 
|Sam Reicks
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Tyler Matthew
 
|Tyler Matthew
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Ben Bogler
 
|Ben Bogler
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Brittany Krawczyk
 
|Brittany Krawczyk
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Cary Lahucik  
 
|Cary Lahucik  
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Eric Yu  
 
|Eric Yu  
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Davis Mazariegos  
 
|Davis Mazariegos  
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Dan Baltudis
 
|Dan Baltudis
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Ryan Taylor
 
|Ryan Taylor
 
|Everett Wilson
 
|Everett Wilson
 +
|
 
|-
 
|-
 
|Andy Richardson
 
|Andy Richardson
 
|Everett Wilson
 
|Everett Wilson
 +
|
 
|-
 
|-
 
|David Srebro
 
|David Srebro
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Shae Kurko
 
|Shae Kurko
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Simon Cygielski
 
|Simon Cygielski
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Jeff Lawson
 
|Jeff Lawson
 
|Ron Olson
 
|Ron Olson
 +
|
 
|-
 
|-
 
|James Villalpando
 
|James Villalpando
Line 279: Line 321:
 
|Greg "Nerobro" Teiber
 
|Greg "Nerobro" Teiber
 
|Everett Wilson
 
|Everett Wilson
 +
|
 
|-
 
|-
 
|Pericles Tsellos
 
|Pericles Tsellos
Line 290: Line 333:
 
|Eric Reusche
 
|Eric Reusche
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Raj Perera
 
|Raj Perera
Line 297: Line 341:
 
|Erik Wessing
 
|Erik Wessing
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Ryan Neuman
 
|Ryan Neuman
 
|Ron Olson
 
|Ron Olson
 +
|
 
|-
 
|-
 
|Kevin Sampson
 
|Kevin Sampson
Line 307: Line 353:
 
|Jim Baker
 
|Jim Baker
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Tom Boeman
 
|Tom Boeman
Line 320: Line 367:
 
|9/23/15
 
|9/23/15
 
|-
 
|-
| Sheila Miguez
+
|Sheila Miguez
| Everett Wilson
+
|Everett Wilson
| 10/14/2015
+
|10/14/2015
 
|-
 
|-
 
|Niko Hawley
 
|Niko Hawley
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Will Alt
 
|Will Alt
Line 339: Line 387:
 
|11/18/15
 
|11/18/15
 
|-
 
|-
|Jennie Plasterer
+
|Jennie P
 
|Todd Allen
 
|Todd Allen
 
|11/18/15
 
|11/18/15
Line 353: Line 401:
 
|Marcin Ignasiak
 
|Marcin Ignasiak
 
|Ron Olson
 
|Ron Olson
 +
|
 
|-
 
|-
 
|Greg Kudlacz
 
|Greg Kudlacz
 
|Todd Allen
 
|Todd Allen
 +
|
 
|-
 
|-
 
|Daniel Maziarz
 
|Daniel Maziarz
 
|Todd Allen
 
|Todd Allen
|-
+
|
 
|-
 
|-
 
|Jean Michel Crettaz
 
|Jean Michel Crettaz
 
|Todd Allen
 
|Todd Allen
 
|12/14/15
 
|12/14/15
|-}
+
|-
 
+
|Dafe Hughes
[[Category:Metalworking]]
+
|Todd Allen
[[Category:Coldmetals]]
+
|12/16/15
 +
|-
 +
|Lauren Svedman
 +
|Michael Patton
 +
|1/06/16
 +
|-
 +
|Bruce McConachie
 +
|Michael Patton
 +
|1/10/16
 +
|-
 +
|Andrew Dalesandro
 +
|Michael Patton
 +
|1/10/16
 +
|-
 +
|Tony Johnson
 +
|Michael Patton
 +
|1/10/16
 +
|-
 +
|Brandon Love
 +
|Michael Patton
 +
|1/27/16
 +
|-
 +
|Connor Sullivan
 +
|Tom Judge
 +
|1/22/16
 +
|-
 +
|Adam Stafford
 +
|Michael Patton
 +
|4/17/16
 +
|-
 +
|Ian Monroe
 +
|Michael Patton
 +
|6/29/16
 +
|-
 +
|Joe Iklov
 +
|Michael Patton
 +
|6/29/16
 +
|-
 +
|Jim Brink
 +
|Michael Patton
 +
|6/29/16
 +
|-
 +
|Frank Bowles
 +
|Michael Patton
 +
|6/29/16
 +
|-
 +
|Eugene Liokumovich
 +
|Michael Patton
 +
|
 +
|-
 +
|Sam Olendorf
 +
|Michael Patton
 +
|
 +
|-
 +
|Matthew Quigley
 +
|Michael Patton
 +
|
 +
|-
 +
|Brian Cuocci
 +
|Michael Patton
 +
|10/5/16
 +
|-
 +
|[[User:jonk|Jon Komperda]]
 +
|Dean Anderson
 +
|11/6/16
 +
|-
 +
|Abel Greenwald
 +
|Michael Patton
 +
|
 +
|-
 +
|[[User:jonk|Jon Komperda]]
 +
|Dean Anderson
 +
|11/6/16
 +
|-
 +
|Jason Pittman
 +
|Chris Ruhland
 +
|03/07/17
 +
|-
 +
|Bruce Mace
 +
|Chris Ruhland
 +
|3/7/17
 +
|-
 +
|Bhairavi Warke
 +
|Chris Ruhland
 +
|3/23/17
 +
|-
 +
|Brian Adamson
 +
|Chris Ruhland
 +
|3/23/17
 +
|-
 +
|Bob Loos
 +
|Chris Ruhland
 +
|3/23/17
 +
|-
 +
|Jeremy Shaw
 +
|Chris Ruhland
 +
|4/09/17
 +
|-
 +
|Sam Chen
 +
|Chris Ruhland
 +
|
 +
|-
 +
|Molly Adamski
 +
|Chris Ruhland
 +
|4/09/17
 +
|-
 +
|Carlos Garcia
 +
|Chris Ruhland
 +
|5/17/17
 +
|-
 +
|Ben Stringer
 +
|Chris Ruhland
 +
|5/17/17
 +
|-
 +
|Luis Colmenares
 +
|Sam
 +
|6/12/17
 +
|-
 +
|Andrew Wingate
 +
|Todd Allen
 +
|7/17/17
 +
|-
 +
|Joanna C.
 +
|Sam O.
 +
|9/27/17
 +
|-
 +
|Sean Nixon
 +
|Sam Ohlendorf
 +
|9/27/17
 +
|-
 +
|Mateusz Pec
 +
|Sam Ohlendorf
 +
|9/27/17
 +
|-
 +
|[[User:Bobbyh|Bobby Huggins]]
 +
|Sam Olendorf
 +
|11/15/17
 +
|-
 +
|Ryan Himmelblau
 +
|Sam Ohlendorf
 +
|11/15/17
 +
|-
 +
|Mac MacDevitt
 +
|Sam Ohlendorf
 +
|12/20/17
 +
|-
 +
|[[User:wittnl|Nathan Witt]]
 +
|Sam Ohlendorf
 +
|11/29/17
 +
|-
 +
|Aaron Vander Bee
 +
|Sam Olendorf
 +
|1/10/18
 +
|-
 +
|Amanda Assaley
 +
|Sam Olendorf
 +
|1/10/18
 +
|-
 +
|Stephanie Pelzer
 +
|Sam Olendorf
 +
|1/10/18
 +
|-
 +
|Chris Eppig
 +
|Sam Olendorf
 +
|1/10/18
 +
|-
 +
|Alex Berkowitz
 +
|Sam Olendorf
 +
|
 +
|-
 +
|Scott Fullman
 +
|Sam Olendorf
 +
|2/7/2018
 +
|-
 +
| Wrobel
 +
|Sam Olendorf
 +
|02/07/2018
 +
|-
 +
|Michael Ice
 +
|Sam Olendorf
 +
|2/08/18
 +
|-
 +
|Francisco Becerril
 +
|Sam Olendorf
 +
|2/07/18
 +
|-
 +
|Bill Schroeder
 +
|Sam Olendorf
 +
|4/18/2018
 +
|-
 +
|Maciej Warchalowski
 +
|Sam Olendorf
 +
|6/13/2018
 +
|-
 +
|Kevin Wendt
 +
|Abel Greenwald
 +
|7/6/2018
 +
|-
 +
|Jeff Benning
 +
|Sam Olendorf
 +
|7/11/2018
 +
|-
 +
|Aaron Hale
 +
|Sam Olendorf
 +
|8/8/2018
 +
|-
 +
|Ryan Treacy
 +
|Sam Olendorf
 +
|9/19/2018
 +
|-
 +
|Earl Wood
 +
|Sam Olendorf
 +
|
 +
|-
 +
| Jacob Dawson
 +
| Sam Olendorf
 +
| 9/19/2018
 +
|-
 +
| Craig Cernek
 +
| Dave Solomon
 +
| 03/27/19
 +
|-
 +
| Matt Saunders
 +
| McTavish McArdle
 +
| 7/23/2019
 +
|-
 +
| Patrick Cook
 +
| McTavish McArdle
 +
| 7/23/2019
 +
|-
 +
|[[User:NewFatMike|Mike Thompson]]
 +
|McTavish McArdle
 +
|08/27/19
 +
|-
 +
| Malindima Sampa
 +
| McTavish McArdle
 +
| 1/7/2020
 +
|-
 +
|Michelle deLeon
 +
|McTavish McArdle
 +
|02/04/20
 +
|-
 +
| Corwin Kline
 +
| McTavish McArdle
 +
| 02/04/2020
 +
|-
 +
|Grant Boyle
 +
|Ben M
 +
|3/11/2020
 +
|-
 +
| Dylan Ambrosini
 +
| Dave
 +
| 8/4/2020
 +
|}
 +
[[Category:Cold Metals]]

Latest revision as of 14:02, 10 October 2020


Johnson Bandsaw
JohnsonMetalBandsaw.jpg
Owner/Loaner PS:One
Serial Number J14445
Make/Model Johnson Model J (JD)
Arrival Date 1/13/14
Usability yes
Contact Dean Anderson
Authorization Needed yes
Hackable no
Estimated Value 700
Host Area Cold Metals


Johnson Bandsaw Area: Cold Metals https://wiki.pumpingstationone.org/Johnson_Bandsaw



Status

  • A VFD has been fitted, this allows the machine to run on a 110v circuit and provides a variable speed control. The display shows the RPM of the drive wheel (16") * 4 which is approximately blade speed in FPM. The power switch on the left side of the control box applies power to the VFD. The on/off button on the front panel and the limit switch control the blade, the button must be out for on and the limit switch up to run. The button switch serves as an emergency switch, pull for on push for off. The dial controls RPM.
     - Jim Brink 12/10/16 
  • The large groove (fastest speed) of the motor shaft step pulley is bent. The motor vibrates excessively when the belt is in this groove. Use the other grooves (slower speeds) until the pulley is replaced.

This tool requires authorization for use.

Johnson products are now supported by Dake. http://www.dakecorp.com/ Replacement parts for this saw are generally available.

Specifications

Capacity 10" rounds, 18" flats
Blade Size 137" x 3/4"
Blade Speed FPM = RPM of drive wheel* 4.18
Power 120V via VFD, motor is 3/4HP,240V, 3 phase
Weight 683 pounds
Mfg. Date 1964

Blades

General rule of thumb is that if the thinnest part (in the direction of the blade) that you're cutting isn't at least 3 saw teeth thick, it will damage the blade.

To-Do

Grease pivot bar

Add coolant pan and pump.

Add blade brush.

Post a chart of recommended blade speeds for various materials.

Maintenance

maintenance page

Major Components

Auth/Use Notes

These notes are for authorized users and authorizers; you must be authorized on the tool by a person, not this list. Don't expect this list to be complete or authoritative.

  • Horizontal band saws cut via a vertically descending blades.
  • The cutting tooth speed is set by a pulley in the rear and VFD.
    • Lift up on the motor to get some slack on the belt.
    • Don't cross wheels; keep the pulley belt straight.
    • Go toward larger motor wheels for soft metals and plastic and smaller motor wheels for tough metals like steel (and tool steel.)
  • The cutting tooth feed is set by a needle valve and a weight on top.
    • Be gentle with the needle valve; a single finger with light pressure is enough to adjust it.
  • Power
    • as of 12/16 a Fluxmaster 50 VFD has been added, for more information on the Fluxmaster see the link in resources. The machine is now powered by 120v. Any 120 volt outlet can be used.
    • Power to the VFD is controlled by the toggle switch on the left of the control box.
    • The button switch on the front and and the trip lever control the motor. The button must be pulled out and the trip lever up. Both must be 'on' to power the motor.
    • RPM is controlled by the dial and the belt position.
    • The large display shows approximate blade speed in feet per minute. The smaller display on the VFD shows the output frequency of the VFD and is not needed for operation.
    • Turn off switches and unplug the machine when you're done to prevent accidental activation.
    • Never walk away from the machine while it's running. We are not a production shop; babysit the machine in case it fails and avoid putting curious people in danger.
  • Clamping a workpiece
    • Short pieces cock the vice jaws. This ruins the grip on the workpiece and is to be avoided. Componensate by using a block approximately the size of your workpiece or a machinist jack on the far side of the vise jaws.
    • Check the width of your workpiece against the teeth.
      • The thinnest section of the workpiece should be wider than three teeth in a row.
      • The thickest section of the workpiece should be narrow than twenty-four teeth.
    • If you're cutting angle stock, rotate it so that it forms a < shape to prevent it from rotating.
    • If you're cutting round, use angle blocks (in the tooling cabinet) to keep it from rotating.
    • Check that the movable blade guide is as close as possible while clearing the vice and the table.
  • Safety
    • Unplug the machine before adjusting the pulley or changing the blade.
    • Never leave the machine while running. We aren't a production shop; you need to be right by the machine in case something goes wrong or if a curious person walks by.
  • Clean up when you're done. Don't leave stock in the machine; don't leave chips and coolant behind. Use a small bucket to catch chips before they hit the ground.

References

Manual for the latest version of the Model J (very similar).

http://www.dakecorp.com/manuals/Model%20Johnson%20J%20Saws.pdf

Good link for restoration, including coolant pan dimensions and bearing sizes. http://www.shopfloortalk.com/forums/showthread.php?t=21021

Manual for Fluxmaster 50.

https://www.tecowestinghouse.com/Manuals/FM50%20Instruction%20&%20User%20Manual_0405.pdf

Rebuilding video series https://www.youtube.com/watch?v=TEq7_pH7Uws

List of Currently Authorized Users

Qualified Member Trained By Date
Dean Anderson
Todd Allen Ed Bennet
David Morton Anna Yu
George Shaw Thomas Wright
bandit Gangwere Ed Bennet
Michael Skilton Tucker
Eric Stein Tucker
Kyle Bieneman Todd Allen
Scott Little Todd Allen
RJ Metzger Todd Allen
Giovanni Arroyo Todd Allen
Mark C. Todd Allen
Joao Santos Todd Allen
Nicholas Haldereman Todd Allen
Doorman Dave Todd Allen
Stephen Ioannou Todd Allen
Lucas Goossen Todd Allen
Roger Moore Todd Allen
Matt Wilkens Todd Allen
Rhonda Jackson Todd Allen
Matt Meshulam Todd Allen
Kevin Pulver Todd Allen
Andrew Camardella Todd Allen
Mike Coriale Todd Allen
John Farmer Todd Allen
Jay Pee Todd Allen
Sam Paris Todd Allen
Jake Rush Todd Allen
Carolyn Ignacio Todd Allen
Andrew Sowa Todd Allen
Hilary Lee Todd Allen
Eric Slehofer Todd Allen
Sam Reicks Todd Allen
Tyler Matthew Todd Allen
Ben Bogler Todd Allen
Brittany Krawczyk Todd Allen
Cary Lahucik Todd Allen
Eric Yu Todd Allen
Davis Mazariegos Todd Allen
Dan Baltudis Todd Allen
Ryan Taylor Everett Wilson
Andy Richardson Everett Wilson
David Srebro Todd Allen
Shae Kurko Todd Allen
Simon Cygielski Todd Allen
Jeff Lawson Ron Olson
James Villalpando Ron Olson 5/19/15
Greg "Nerobro" Teiber Everett Wilson
Pericles Tsellos Todd Allen 14JUN2015
Hunter Koerner Todd Allen 6/14/15
Eric Reusche Todd Allen
Raj Perera Todd Allen 6/14/15
Erik Wessing Todd Allen
Ryan Neuman Ron Olson
Kevin Sampson Todd Allen 7/22/15
Jim Baker Todd Allen
Tom Boeman Todd Allen 8/30/15
Jonathan Levine Todd Allen 9/23/15
Alejandro Drexler Todd Allen 9/23/15
Sheila Miguez Everett Wilson 10/14/2015
Niko Hawley Todd Allen
Will Alt Todd Allen 10/28/15
Peter Letscher Todd Allen 10/28/15
Aaron Carlock Todd Allen 11/18/15
Jennie P Todd Allen 11/18/15
Kurt Ziegel Todd Allen 11/18/15
Mike Forkan Ron Olson 11/18/15
Marcin Ignasiak Ron Olson
Greg Kudlacz Todd Allen
Daniel Maziarz Todd Allen
Jean Michel Crettaz Todd Allen 12/14/15
Dafe Hughes Todd Allen 12/16/15
Lauren Svedman Michael Patton 1/06/16
Bruce McConachie Michael Patton 1/10/16
Andrew Dalesandro Michael Patton 1/10/16
Tony Johnson Michael Patton 1/10/16
Brandon Love Michael Patton 1/27/16
Connor Sullivan Tom Judge 1/22/16
Adam Stafford Michael Patton 4/17/16
Ian Monroe Michael Patton 6/29/16
Joe Iklov Michael Patton 6/29/16
Jim Brink Michael Patton 6/29/16
Frank Bowles Michael Patton 6/29/16
Eugene Liokumovich Michael Patton
Sam Olendorf Michael Patton
Matthew Quigley Michael Patton
Brian Cuocci Michael Patton 10/5/16
Jon Komperda Dean Anderson 11/6/16
Abel Greenwald Michael Patton
Jon Komperda Dean Anderson 11/6/16
Jason Pittman Chris Ruhland 03/07/17
Bruce Mace Chris Ruhland 3/7/17
Bhairavi Warke Chris Ruhland 3/23/17
Brian Adamson Chris Ruhland 3/23/17
Bob Loos Chris Ruhland 3/23/17
Jeremy Shaw Chris Ruhland 4/09/17
Sam Chen Chris Ruhland
Molly Adamski Chris Ruhland 4/09/17
Carlos Garcia Chris Ruhland 5/17/17
Ben Stringer Chris Ruhland 5/17/17
Luis Colmenares Sam 6/12/17
Andrew Wingate Todd Allen 7/17/17
Joanna C. Sam O. 9/27/17
Sean Nixon Sam Ohlendorf 9/27/17
Mateusz Pec Sam Ohlendorf 9/27/17
Bobby Huggins Sam Olendorf 11/15/17
Ryan Himmelblau Sam Ohlendorf 11/15/17
Mac MacDevitt Sam Ohlendorf 12/20/17
Nathan Witt Sam Ohlendorf 11/29/17
Aaron Vander Bee Sam Olendorf 1/10/18
Amanda Assaley Sam Olendorf 1/10/18
Stephanie Pelzer Sam Olendorf 1/10/18
Chris Eppig Sam Olendorf 1/10/18
Alex Berkowitz Sam Olendorf
Scott Fullman Sam Olendorf 2/7/2018
Wrobel Sam Olendorf 02/07/2018
Michael Ice Sam Olendorf 2/08/18
Francisco Becerril Sam Olendorf 2/07/18
Bill Schroeder Sam Olendorf 4/18/2018
Maciej Warchalowski Sam Olendorf 6/13/2018
Kevin Wendt Abel Greenwald 7/6/2018
Jeff Benning Sam Olendorf 7/11/2018
Aaron Hale Sam Olendorf 8/8/2018
Ryan Treacy Sam Olendorf 9/19/2018
Earl Wood Sam Olendorf
Jacob Dawson Sam Olendorf 9/19/2018
Craig Cernek Dave Solomon 03/27/19
Matt Saunders McTavish McArdle 7/23/2019
Patrick Cook McTavish McArdle 7/23/2019
Mike Thompson McTavish McArdle 08/27/19
Malindima Sampa McTavish McArdle 1/7/2020
Michelle deLeon McTavish McArdle 02/04/20
Corwin Kline McTavish McArdle 02/04/2020
Grant Boyle Ben M 3/11/2020
Dylan Ambrosini Dave 8/4/2020