Index’s CNC Multi-Spindle Lathe with Six Spindles

Originally titled 'CNC Multi-Spindle Lathe with Six Spindles'

Workpieces are automatically indexed through the six positions, receiving two or more operations at each position. The result is high production of precision turned workpieces.

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Designed to supplant cam-controlled multi-spindle lathes up to 22-mm bar diameter, the Index MS16 Plus of the Index MultiLine series includes six CNC spindles for up to 22-mm diameter parts, accomplishing turning, drilling, milling, tapping, deep hole drilling or slotting in each of its six spindle positions. Workpieces are automatically indexed through the six positions, receiving two or more operations at each position. The result is high production of precision turned workpieces.

The total of 27 NC axes of the lathe includes five NC grooving or boring slides, five NC cross-slides, one NC cutoff and/or back-boring slide, six work spindles, one NC synchronous spindle, drum indexing plus an additional five free NC axes of possible CNC-controlled auxiliary equipment are controlled by an Index C200-4D CNC.

The MS16 Plus provides the speed of a cam-controlled machine with the flexibility of CNC technology yet requires no more floor space than a cam-controlled multi-spindle machine. It also offers exceptionally high ease of setup and more versatile machining options compared with cam-controlled machines.

Each of the six spindle positions can include a highly stable grooving or boring slide with one NC axis and a cross-slide with two NC axes (X and Z axes) that are arranged around each work spindle in a V-shape, allowing use of several tools simultaneously on each work spindle.

The NC-controlled synchronous spindle for gripping the workpiece and an NC cutoff and back-boring slide are designed to provide optimal conditions for efficient production of turned parts with simple to medium complexity and up to approx. 70 mm in length.

The speed of each of the six spindles can be controlled separately. Spindle speeds can be varied during cutting for each spindle position and each cutting edge of the tool. Speed changes and positioning of the spindles are possible even during spindle drum indexing, avoiding secondary processing times. Other advantages include maximum surface quality, short production times per piece and extended tool life, according to the company.

For rear end machining, the MS16 Plus is equipped with a synchronous spindle driven by a hollow-shaft motor allowing speeds up to 10,000 rpm, which can move 140 mm in Z at 30 m/min to engage several rear-end machining tools on the NC cutoff slide with the X and Z axis in succession more quickly. To achieve the shortest cycle times possible, the synchronous spindle accelerates to a maximum of 10,000 rpm in less than 0.7 second.