LVTM Machine
This System is currently installed at Superior Veneer in Glendale OR
We are proud to introduce our laser veneer thickness machine. The machine uses digital lasers to measure the thickness of the veneer before it enters the stacker the digital lasers avoid the “analog drift” problems inherent in other systems as the temperature increases and decreases. Our system measures within +/- .001” it gives real time thickness data to the operator so that they can use the information to make on the fly adjustments to correct peeling problems and increase productivity and quality. The machine also gives roughness detection of the sheets, which can be useful in finding knife grinding problems and lathe set up problems. Here is an overview of how the system works.
The Main screen has all the functions
of the system, control buttons allow you to start and stop the system, save
print and reset the data of the system. Laser error leds warn you of
debris on lasers, or if the lasers have been damaged and are not functioning
properly. Thickness values for each point are displayed on the screen,
this can help you see if there is a problem with your peel. It also
gives an average sheet thickness for all of the sheets run, and the total
sheets to thin and sheets to thick as determined by the user defined control
limits. The histogram graph gives you a graphical view of the data,
data is saved to a bar graph on the screen and the minimum, maximum, average,
and standard deviation for all the data is displayed also. The system
not only generates a report that is sent to a printer, but also saves all
data for every sheet of veneer that runs through the system to a Microsoft
excel and access compatible file. A time stamp is created for when each
sheet is run through and the system saves the thickness of the sheet at each
of the four points, and the standard deviation of the sheet. This data
is useful to look at how knife changes affect the veneer and any other number
of changes made through the day affect the quality of the veneer.
The sheet thickness display graphs
the last forty sheets. You can auto adjust the controls limits for the
graphs easily by pressing the button on the touch screen and entering a new
value. This graph also gives you the minimum, maximum, average, and
standard deviation for the last forty sheets.
The sheet roughness display graphs
the standard deviation of each sheet. All of the measurements for the
sheet are taken into consideration and the standard deviation of the measurements
is calculated. This is a useful tool to determine how rough the sheet
is.
This installation is on the infeed to a stacker, the laser framework is isolated
from all of the other equipment to reduce vibration. Specially made
vibration-dampening pads further insure the accuracy of the system.