HEIDENHAIN TNC 640 User Manual page 331

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Cycles: Special Functions | INTERPOLATION TURNING, CONTOUR FINISHING (Cycle 292, DIN/ISO: G292,

software option 96)

Define a milling tool in the tool table (tool.t) as a milling

tool (for subsequent use as a turning tool)

You can perform interpolation turning with a milling tool. In this

case the following data from the tool table a taken into account

(including delta values): length (L), radius (R), and corner radius

(R2). Orient a cutting edge of the milling cutter to the spindle

center and enter this angle in the parameter Q336. For outside

machining the spindle orientation equals Q336, and for inside

machining the spindle orientation equals Q336+180.

Define a turning tool in the turning tool table (toolturn.trn)

If you are working with option 50, you can define the turning

tool in the turning tool table (toolturn.trn). In this case, the

spindle is oriented to the center of rotation by taking tool-

specific data into account, such as the machining operation

(TO in the turning tool table), the orientation angle (ORI in the

turning tool table) and the parameter Q336.

The spindle orientation is calculated as follows:

Interpolation turning, outside

Interpolation turning, inside

Interpolation turning, outside

Interpolation turning, inside

Interpolation turning, outside

Interpolation turning, inside

HEIDENHAIN | User's manual for cycle programming | 10/2017

Spindle orientation

ORI + Q336 + 180