Machining With Movable Counterspindle - Siemens SINUMERIK 840D sl Operating Manual

Hide thumbs Also See for SINUMERIK 840D sl:

Table of Contents

Machining with movable counterspindle

If your lathe has a counterspindle, you can machine workpieces using turning, drilling and

milling functions on the front and rear faces without reclamping the workpiece manually.

Before machining commences on the rear face, the counterspindle must grip the workpiece,

remove it from the main spindle and move it to the new machining position. You can program

these operations with the "Counterspindle" function.

The following steps are available to program the operations:

● Gripping: Gripping the workpiece with the counterspindle (with limit stop if necessary)

● Withdrawing: Withdrawing the workpiece out of the main spindle with the counterspindle

● Rear side: Moving the workpiece with the counterspindle to the new machining position

● Complete: Gripping, withdrawing (optionally with cutting-off) and rear face

● Front side: Work offset for machining the next front face (for bars)

If you start to execute a program containing a counterspindle machining operation, the

counterspindle is first retracted to the return position defined in a machine data element.

Teaching in the parking position and angle offset

Teaching the park position is possible only if you have selected the machine coordinate

system (MCS).

Operating Manual, 03/2013, 6FC5398-8CP40-3BA1

Machine manufacturer

Please refer to the machine manufacturer's specifications.

Manually rotate the counterspindle chuck to the desired position, and

move the tool to the desired position.

Press the "Various" and "Counterspindle" softkeys.

Select the "Gripping" or "Complete transfer" programming step.

Select "MCS" tool under the park position.

Programming technology functions (cycles)

8.7 Additional cycles and functions in ShopTurn

Sinumerik 828d turning