CNC safety system possibility for CNC machining and Mach
I heard talk about a new table saw that is equipped with new type of safety system called SawStop.
I find this very interesting and a possibility for the CNC industry to climb on board and develop something similar.
So everything has tonal qualities, like an orchestra of sounds. Our machine might sound like a bunch of random chaos of sound but they actually have a continual tonal frequency (when functioning properly).
There is a distinct change in the electrical signal when a finger touched a spinning.
A couple things come to mind for possibilities:
-Stop a spindle or a machine from harming a person.
-Stop a machine from causing damage to it’s self.
-Accurately diagnose the physical health of a machine.
-Fine tune and adjust appropriate spindle speed by detecting the spindles frequency and having a program appropriately adjust the RPM’s on the fly.
-Feed rate changes can be made more efficiently and accurately on the fly.
Here’s how Sawstop work’s:
“SawStop safety system includes an electronic detection system that detects when a person contacts the blade. The system induces an electrical signal onto the blade and then monitors that signal for changes. The human body has a relatively large inherent electrical capacitance and conductivity which cause the signal to drop when a person contacts the blade. Wood has a relatively small inherent capacitance and conductivity and does not cause the signal to drop.
A fast-acting brake stops the blade when contact is detected. The brake includes a heavy-duty spring to push a block of aluminum, called a brake pawl, into the teeth of the blade to stop the blade from spinning. The spring is held in compression by a fuse wire until contact is detected. When contact is detected, the system sends a surge of electricity through the fuse wire to burn the wire and release the spring. The spring pushes the brake pawl into the teeth of the spinning blade, and the teeth cut into the aluminum and bind, thereby stopping the blade. All this happens in about 3–5 milliseconds, or 1/200th of a second. At the same time, the angular momentum of the blade causes the blade to retract below the table and the power to the motor is shut off.”http://www.sawstop.com/index.htm
Just some thoughts on the possible future of CNC and Mach