Tool through block with switching valve

 
It has 8 parts consisting of the following 5 kinds(body, pin, spring, back cover, flat head screw)
This is the stopper block of the tool-through device, used in the machining center. Switching between extemal coolant and tool-through coolant is performed in this block.
By using this block, it is possible to combine the extemal coolant and the tool-through coolant. Of course, NC commands only M0.9.
 The working principle is that, when the tool-through device is set on the spindle, the stopper pin of the tool-through device pushes the pin of the block center to let cutting oil flow from the oil hole in the center of the pin to the tool-through device. If devices other than tool-through were used, pins will not be pushed, and cutting oil will flow in the side holes, and will become extemal coolant.
  
For those who wish to remodel the equpment not equipped with spindle-through and tool-through, we think that it will cost considerably less than retrofitting the manufacturer's specifications.
  
The beginning of the this block was the proposition we made to T company in 1991 of remodeling the T-type gate machining center.
We found a block attached to T's gate type machining center which we first discovered in 2011.
 
That the technology we've invented is being used means something for us.

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