HARD TURNING

Hardinge is the leader in providing a wide range of highly reliable turning, milling, grinding and workholding solutions.  We never compromise on product design, so customers can count on Hardinge to help them make the right part to the required specification, every time.  The breadth and depth of our product solutions are unmatched in the industry, enabling us to support a variety of market applications, including aerospace, automotive, medical, energy, construction, agriculture, mold, tool and die, and more.

Our company mission statement is clear – to design and build “best-in-class,” affordable product solutions for customers whose performance and price requirements are as diverse as they are. From super-precision, high-performance, leading edge technological solutions to our most budget-conscious offerings, our commitment to excellence has brought customers back to Hardinge again and again, for more than 100 years.

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T-SERIES LATHES

IDEAL FOR HARD TURNING

The same factors and considerations optimized in the design stage for Hardinge T-Series SUPER-PRECISION® Lathes carry over to the successful implementation of Hard Turning. These lathes meet the demanding requirements necessary to successfully Hard Turn. Here are several key considerations that make Hardinge T-Series lathes ideal for Hard Turning:

Machine Rigidity
Workholding Rigidity
Outstanding Vibration Damping
Rigid Tooling System
Unmatched Accuracy
Lower Cost

Machine Rigidity

The non-contact magnetic encoder design eliminates the need for belts and moving parts for enhanced positioning accuracy and feedback. This system provides noise/vibration-free operation, and is more reliable than belted encoder designs.

The wide set linear guides are typically 40-60% heavier-duty units than those of most competitive machine tools of the same size that utilize linear guides.

Linear guides on all T-Series SUPER-PRECISION® machines are finished to a higher finish quality, resulting in minimum resistance to motion. The low-stress slide drive systems on T-Series machines have larger axis motors and shorter pitch ballscrews, providing high dynamic stiffness and significantly longer life.

Workholding Rigidity 

The patented Hardinge direct-seating collet spindle ensures that the workpiece is as close as possible to the spindle bearings – the point of maximum rigidity and accuracy. This significantly improves the hard turning process compared to competitive workholding systems.

Roundness is a key requirement: Any projection from the spindle bearings multiplies the spindle runout (and therefore roundness errors) produced on a turned workpiece.

Hardinge is the largest manufacturer of lathe spindle tooling in the world. This means that the workholding systems made for our machines are designed specifically for our machines – without compromise.

Hardinge T-Series machines also incorporate digital glass scales in both the X and Z axes for high machining performance over a large number of parts. Thermal growth is kept to a minimum. The spindle motor and collet closer assemblies are dynamically balanced. X and Z axis error compensation is performed to fine-tune positioning and compensate offset at the tool tip.

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