Zero point setting is the main operation of cnc router machines. Before cnc router machining, we need to be certain the distance from the router bit to the work piece. If there were no special tools, this job would be time costly. Using cnc router tool length sensor can complete measurement of distance from the router bits to workpiece automatically and rapidly; improve your work efficiency greatly.

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When using multiple milling or engraving tools on a CNC operation, the Z-axis is always the goofy axis because, for instance, the lengths of the tools are all different and the distance the tool is inserted into the collet can vary widely. If without tool offset setting sensor, we have to calculate the length difference of each tool and set offset in the controller before every operation starts. Undoubtedly, this process will be time costly. While, the CNC tool length sensor optimizes this process. With the sensor, you will load the first tool, then the cnc router will capture the tool length with the sensor before you touch that tool off to the top of the part. This will establish the z-axis origin and you will only have to touch off the top of the part this one time. On each tool change, the cnc router will shut off the spindle and drive out to the front of the cnc router to allow for easy tool change access. The cnc router will then drive over until it is above the tool sensor, will bounce off of that sensor, will then continue with the cutting process using the new compensated tool length offset.  In a word, tool length sensor makes the operation simple and increases the production efficiency. 

CNC Router Tool offset setting sensor Wiring Guide

1. One cable is connected to the C.A.D signal of control card

2. The other cable is connected to GND point of control card (There is no order in the two lines)

After tool length sensor wiring done, start the cnc router (do not start the spindle motor). Don't put the clamp onto the spindle. First use the clamp to touch the tool offset setting sensor face, and see if the Z axis take action of tool length setting. If everything is ok, put the clamp on the spindle.

3. The thickness of the tool length sensor needs to be measured by caliper, and the accurate value is input into the C.A.D setup of the controller.

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