Difference between revisions of "Big laser cutter"

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(New auto z zeroing sensor (September 2018))
(Working Status)
Line 5: Line 5:
 
|model=G.Weike LC1512
 
|model=G.Weike LC1512
 
|arrived=07/2015
 
|arrived=07/2015
|doesitwork=No
+
|doesitwork=Yes
 
|contact=Fab Lab area warden
 
|contact=Fab Lab area warden
 
|where=1A
 
|where=1A
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= Notice =  
 
= Notice =  
  
'''7/27/18 BOTH lasers are offline for complete overhaul, including tube & optics replacement. The overhaul includes some significant changes. Until the work is finished, and certified users are updated on new procedures, the lasers must not be used. This process is expected to be complete by 8/4 for the big laser'''
+
'''9/12/18 The Big Laser is Working again after a major overhaul including tube & optics replacement. There is a significant increase in cutting power and the lens now has a 127mm focal length which increases the length of the narrow cutting sweet spot. Old files and settings need to be reset for the higher output. Your old speeds and power settings are probably wrong.'''
  
 
= Users =
 
= Users =
The Big Laser is only available to Hive13 members who have been certified on its use & care. To become certified, you need to take the certification class. Contact us about scheduling one at other times.
+
The Big Laser is only available to Hive13 members who have been certified on its use & care. To become certified, you need to take the certification class. Contact us about scheduling one.
  
 
'''Note: The list of certified people was WAY out of date. Please notify Lorin Parker to certify, re-certify, etc'''
 
'''Note: The list of certified people was WAY out of date. Please notify Lorin Parker to certify, re-certify, etc'''
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* Dave Velzy
 
* Dave Velzy
 
* Ryan Hershey
 
* Ryan Hershey
 
 
  
 
== To Do ==
 
== To Do ==

Revision as of 17:16, 12 September 2018

Fab Lab
3D Printing 2D Cutting Misc



Hive13 Equipment
List of All Documented Equipment
Big Laser 01092016.jpg
Consumables
Owner/Loaner: Hive13
Make/Model: G.Weike LC1512 (google)
Arrival Date: 07/2015
Does it work?: Yes
Certification Needed?: yes
Contact: Fab Lab area warden
Floorplan: 1A
Manual: [[LC1512[1]|Manual]]
Big_laser_cutter.png



WARNING: Do not look into laser with remaining eye. Pages to do with the Laser Cutter:

Notice

9/12/18 The Big Laser is Working again after a major overhaul including tube & optics replacement. There is a significant increase in cutting power and the lens now has a 127mm focal length which increases the length of the narrow cutting sweet spot. Old files and settings need to be reset for the higher output. Your old speeds and power settings are probably wrong.

Users

The Big Laser is only available to Hive13 members who have been certified on its use & care. To become certified, you need to take the certification class. Contact us about scheduling one.

Note: The list of certified people was WAY out of date. Please notify Lorin Parker to certify, re-certify, etc

Only the following people are certified and permitted to fire the lazzzor:

  • (updated user list will be placed here)

Trainers

  • Lorin Parker
  • Dave Velzy
  • Ryan Hershey

To Do

Counter balancing the lid

The pneumatic cylinders on our laser were bad when we received the laser which cause some near accidents when the lid wasn't supported and came crashing down.

Helper struts have been added and now the lid will stay up.

Pic of helper struts
Helper struts

Still crashes down the last few inches. Perhaps we can add a closing damper. The handle could use an upgrade. If only we could machine stuff . . . .

After some use it was discovered that the lower (frame) mount for the new strut hits the laser carriage if the carriage is moved under it. We need to shift the new strut mount upward to miss the laser head, if it is moved too far up it will hit the original strut. Until we modify the strut mount, please keep the laser head away from the far right and left sides of the table.

It also appears that when the laser did crash into the strut mount, it got knocked out of alignment and the carriage has become "racked" (not perpendicular). I think we need to square up the carriage and then redo the laser alignment.

So the laser is working but not optimal. :)

Automate filtration

To be planned

Move/replace filtration

Either move the exhaust fan to a better location or upgrade to actual filtration inside the space (this has some major benefits such as being able to move a lot easier, not exhaust our climate controlled air, helping cut down on rather toxic air pollution outside, actually /cleaning/ the air in the hive which we have issues with).

Work Log

New auto z zeroing sensor (September 2018)

Replacement sensor is a LJ8A3-2-Z/BX NPN NO 3-wire 2mm Inductive Proximity Sensor Switch DC 6-36V housed in a custom aluminum contactor. The sensor is commonly available.

Z-Height Probe with imbedded sensor

The picture on the right shows how the new sensor is mounted. The sensor may be adjusted up and down to zero the focal point a the top surface or mid-plane of the material to be cut.

During the installation of the sensor it was learned that a pull-up resistor of 330K ohm is added in line between the 24v line and the output line.

Laser Wiring Information Table
Laser Side Red Purple Blue
Sensor Side Brown Black Blue
Location Left Center Right
Function 24v Output Ground
pull-up Resistor 330K Ohm n/a

New auto Z Settings February 2017

16.5 is the setting we want to use for Org-OffsetLength in the Easycut 5.3 software. The distance from the top of the material to the point the sensor triggers is 1.114". The OriginOffSetLen setting within the syscfg_biglaser.ini file needs to be set to 16.5