Siemens Sinumerik 840D Operating Turning page 210

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Measuring a tool

Selecting the function "Measure tool"

The geometries of the machining tool must be taken into consideration

when executing a part program. These are stored as tool offset data in the

tool list. Each time the tool is called, the control considers the tool offset

When programming the part program, you only need to enter the work-

piece dimensions from the production drawing. After this, the controller in-

dependently calculates the individual tool path.

You can determine the tool offset data, i.e. the length and radius or diame-

ter, either manually or automatically with tool probes.

Measuring a tool manually

When measuring manually, traverse the tool manually to a known refer-

ence point in order to determine the tool length, the radius or the diameter.

The Sinumerik Operate then calculates the tool„s offset data from the posi-

tion of the tool carrier reference point and the reference point.

With the measuring of the tool length, either the workpiece or a fixed point

in the machine‟s coordinates system, (e. g. a load cell or a fixed point in

conjunction with a distance meter) can be used as a reference point.

The position of the workpiece is shown during the measurement.

The position of the fixed point, in contrast, must be known before the

measurement.

When determing the radius/diameter, the workpiece always serves as the

reference point.

Depending on the setting in the machine datum, the radius or the diameter

of the tool can be measured.

Note the machine manufacturer„s instructions.

By pressing the HSK 4 "Meas. tool" the measure

tool VSK-bar opens on the left side of the screen.

840D/828D SINUMERIK Operate

Sinumerik 828d