3.1 Installing the tool sensor

Once the surfacing operation is finished, we are going to install and parametrize the tool sensor.

There is no obligation on the tool sensor position. However, we propose 2 possibilities:

Position 1

The sensor is placed under the Machine Origins (MOP), this saves the robot unnecessary displacements.

Position 2

The sensor is placed in the right upper angle of the «surfaced» martyr plate. This allows having more clearance on the Y travel.

· Set a javelin tool or engraving tool in the spindle. These tools, in fact, allow to touch the double-sided adhesive, spindle switched off to avoid removing double-side adhesive.

· You can now fix the tool sensor (see previous figure). For a perfect positioning, you can move the Z-Axis so that the center of the tool sensor is placed in front of the point of the tool. Fix the sensor on the martyr plate by two small drops of Cyanolite glue, to get a rigid fixing (useless to spread the glue under the sensor base; two small drops are enough) . You can also, fix the sensor with double sided adhesive.

· Link the sensor to the connector in the high position inside the machine (1).

NB : Pay attention to the sensor cable ; it can be jammed under the machine plate. Think of fixing it.

! Precaution:

The sensor parameter setting consists in making two measures, one on the sensor and the other on the martyr plate ; it is to inform the software on the level difference between the contact of the sensor and the martyr plate level.

The fixing mode of the workpiece on the martyr plate being double-sided adhésive, we advise you to make the second measure on the double sided adhesive fixed on the martyr plate. It is to declare the Part Origin at this height.

On the main windows, click on the control panel icon.

· The machine moves to its origin position (MOP). Then click (we suppose that the sensor is fixed at this point MOP) on the button «tool measure» (1) (this operation memorize the sensor position).

· The tool goes down until contacting the sensor then climb up to its origin. A value will be written in the «New values» box (2).

Once the tool marks the double-sided without crossing it, the position is reached . Click on «Z WO» (4).

The operator sets a tool T1 (example: engraving tool).

The user clicks the tool measure button.

The spindle goes down and upon contacting the sensor, the spindle is in position Z = 40.00 (example).

By convention, we note this value zT1 = 40.00

Fig.3

The user touches the plate (on the double-sided adhesive). When the tool is tangent, the spindle is a Z: 12.0, So Z WO1 (Z workpiece origin with tool N1) equals 12.

Z WO1= 12.0

Fig.4

The user loads a file with a workpiece value e = 20,00 mm. The pilot corrects automatically the Z workpiece Origin to place it on the upper face of the workpiece. Consequently Z WO1 = WO1 1+e, therefore Z WO1 = 12,00+20,00 = 32

Fig.5

The user sets a tool T2 (a milling tool for example). «d» is called the length difference between tools T1 and T2.

Fig.6

The user clicks the measure of tool T2. In touch with the sensor, the spindle position is Z = 43,00. The pilot deduces that tool T2 is 3mm longer than T1.

D = zT2 – zT1 = +3 mm.

Fig.7

As the file is always loaded, the thickness of the workpiece is always active. Consequently, Z workpiece Origin with tool T2, to machine on the high side of the part is :

ZWO 2 = ZWO 1 + d = 32,00 + 3 = 35,00