Hardinge will demonstrate their new 2-axis multiple-spindle rotary system at IMTS booth A-8032. When used on a 3-axis VMC this 2-axis positioning system will eliminate the need for sine plates and other expensive fixtures for angular milling. The 2-axis unit features rugged, dual-bearing spindles and a bearing pillow block for rigid, accurate positioning. The tilting 5th-axis features the sturdy 16C² rotary unit, while the rotating 4th-axis can be configured with either dual, triple or quad 5C threaded-nose spindles.

The base 16C² rotary unit has a total 360° tilt (±180° from the 12-o’clock position). Optional adjustable hardware limit switches and programmable software limits are available to limit travel for protection when large workholding fixtures and parts are being machined. These safety features are available to reduce the risk of possible crashes when machining oversized parts. Pneumatic spindle clamps, located in the 16C² spindle and the end support bearing, eliminate slippage when performing high-force machining operations. The 5C² rotary configuration is precision aligned to the spindle center within ±0.0005” (.0127mm).

The 4th-axis 5C² rotary unit will index at a fast 360° per second with a maximum runout (TIR) of 0.0002” (.005mm). The 5C threaded-nose spindle(s) will accept collets, step chucks, manual chucks, expanding collets and face or fixture plates. Multi-spindle systems are available in dual, triple and quad configurations for increased productivity. Choose from pneumatic high-force collet closers with 1950lb (885kg) of drawbar force, or pneumatic fail-safe, thru-hole collet closers.  The fail-safe design assures that parts will remain clamped if loss of air should occur. Hardinge’s 2-axis Rotary Systems can be operated using Hardinge servo control boxes, and are also 4th and 5th-axis compatible. Hardinge Inc., 800-510-3161.