Moving on to tooling. Tooling is an area of the highest
frequency of errors that might occur in the machining process. You have
diameter and length associated with each and every tool, and sometimes
you’ve got a complex part with 20-30 tools, and everything has to be
perfect. Remember back to that slide that about 99.9 percent right can
still have a significant impact if that 0.1 percent is wrong. Something
that we have done here for our customers, and that many of our
customers also do on their own, is the use of Balluff sensors.
Balluff
is the company that produces, markets and sells the sensors, but we use
these sensors to eliminate errors. On my slide there is a picture along
the bottom showing where a read/write chip is actually embedded into
the tool or the machine. This chip is read when the tool goes into the
machine, and it can be read as the tool comes out of the machine,
always updating information regarding the cutter that’s being used in
that particular tool order.
This can be used very
effectively to eliminate errors because it can take away the manual
operation of inputting data regarding tool lengths. That is probably
the best example of where there is a chance for error. Everything’s
done digitally or electronically through these sensors. It’s a very
effective means. We have also used Balluff Sensors as a part detect on
fixtures to make sure the process is ready to go.
My next
slide is talking about the application of a Balluff Sensor to automate
the uploading or downloading of tooling information to the machine tool
to eliminate errors. It is a wonderful example of eliminating errors
because it is eliminating a manual data input and the risks associated
with a manual data input process. It leaves no chance for error.
In
the top right corner of the screen is a tool pre-setter. Prior to the
tools being used you’ve got to put the tool data into your CNC control,
such as the diameter and length, so that the machine knows where the
tip of that tool is. You're going to do that either on the machine,
which takes cycle time or production time away from the machine, or you
can do it off the machine on a tool presetter, which is usually what we
recommend because it’s overall a more efficient method.
The
tool presetter is where you're going to measure your tool length and
diameter of the tool and what can be done with the Balluff Sensor
process once the tool presetter establishes the lengths, it can be
connected electronically by cable to a PC. With the data in the
computer, it can be easily uploaded to the machine tool through an
Ethernet connection or RS232 connection. Basically, you're loading your
tool data without any manual data input, so you can imagine how
reliable and error proof that kind of process would be. And to do that,
you're sensing that the data on that tool through the read/write chip
that we looked at on the previous slide.
The other way that this
can be applied is with a Balluff Tool Cart. The Balluff Tool Cart can
be used to transport tools from machine to machine in your shop.
Sitting on top of the Balluff Tool Cart is a sensor, and this sensor is reading the chip on the tool holder
that we already talked about. What’s really clever and effective about
this process is that as you take tool orders from one machine to
another, you put it in the Balluff Tool Cart, you read the read/write
chip on the tool holder, and that Balluff sensor can read the data, put
it into the computer, and you can transfer tool data from one machine
to the next using these sensors. Again, you eliminate any manual input
of data and eliminate a significant amount of errors. To take
this just one step further, if you have a group of machines in a cell
that are all controlled by a common point of control, which I’m showing
my slide where it says, ‘Cell controller,’ the Balluff sensing system
can be used again to upload all tool data by tool to the cell
controller. The cell controller in our case at Makino, with our module
NMC pilot management system, then would be the central point of control
to keep all the latest tool data as read by these sensors and deliver
to the appropriate machine as the tools are used in the different
machines within the cell. You can do a whole lot of data transfer with
no manual input and that’s the beauty of this whole system.