Wohlhaupter boring tools enhanced with 3E Tech digital display

Allied Machine & Engineering has announced the expansion of Wohlhaupter digital tools offered with external 3E Tech digital display for micro precision adjustment range measurement. The company is successfully converting a series of precision boring tools with built-in digital displays to include 3E Tech.

3E Tech combines precision adjustment measurement in the tool with an external, dockable and detachable digital display that shows the adjustment setting. This simple, micro-precision readout capability facilitates reliable machining processes for high-precision components. A sensor unit fitted to the display makes direct contact with the tool to record the adjustment travel. Wired, Bluetooth or magnetic connections are not required.

The 3E Tech display unit docks onto the tool and is activated via a pushbutton. It then shows the relative adjustment value of the tool in 2µm increments of the diameter to enable high-precision boring.

Because the display attaches externally and is not integral, it can be used with all Allied Machine/Wohlhaupter tools that are equipped with 3E Tech sensor units. The external display is particularly suitable for tools having a small body diameter, and for special tools with one or more adjustment units.

Built-in displays can get damaged during the machining process, and solutions that are fastened to the tool by magnets can lose the setting value if contact is broken. This is not the case with 3E Tech as the measured values are stored in the tool itself to prevent data loss.

The patent-pending interface between the digital display and the tool ensures safe detachment in the event of an unintentional spindle start and protects the operator if the display is inadvertently left on the tool.

“From now on, all our tools from the smallest to the largest diameter will be equipped with 3E Tech, and it will be optionally available on special tools. The great success of the digital display has virtually forced this decision on us,” says managing partner Frank Wohlhaupter.

“The external solution may be a little more expensive for a single tool, but it soon pays for itself when used with multiple tools. Likewise, for special solutions with multiple cutting edges that are read via the same display,” adds Axel Wagner, business development manager at Wohlhaupter GmbH.

Features of the 3E Tech digital display:

• Micro-precision +/- dimensional correction


• Display accuracy 0.002mm of diameter


• Automatic switch-off after 30 seconds


• Long-life standard battery good for around 5,000 adjustment operations


• IP65 water and dust ingress protection


• Available in metric or imperial versions


• Simple, coolant and chip-resistant contacts ensure long-lasting use in the work area


• Detaches at 500rpm (for rotationally symmetrical tools)