For manufacturers to optimise production processes, it is important to consider user feedback on product functionality. Hainbuch has done this by developing a fully updated version of the TESTit clamping force measuring device for external and internal clamping.

The new redesigned TESTit features enhanced electronics with an even more attractive price point. The new generation of clamping force measuring device is now made up of two parts, the Test Module or measuring unit that changes depending on the specific measurement application, and the IT Module or basic unit. Combining the different variants makes for an extremely flexible solution that can measure almost anything.

The updated product can be used on multi-spindle machines, turning centres and machining centres. Moreover, the system incorporates an additional module for measuring and recording the insertion force of hollow shank taper tool holders. The Testit works as a modular system with plug-and-play functions that communicate via the impressive new software that can be viewed on a tablet, via USB stick or as a download.

The Testit was only previously available as a complete unit and users bought one Testit for external clamping, another for internal clamping, and – depending on requirements – other features for different sizes or specific applications. The costs to end users were prohibitive and Hainbuch has taken steps to rectify this. Now, customers only need one basic unit or IT Module, regardless of whether they need to measure the external or internal clamping forces or pull-in forces. The Test Modules are added to the basic unit that also fits the specially designed versions of the measurement modules.

Costs are therefore significantly lower compared to alternate measuring devices available on the market. For customers buying two or more devices, costs are almost cut in half. With the plug-and-play function, each measuring unit can be detached from the base unit with just three screws, allowing customers to swap-out features quickly.

To retain process stability, precision and productivity, regular monitoring of the clamping and draw force is essential. Today, no one can afford to manufacture with just ‘theoretical values’. Nobody wants to have workpieces rejected because the clamping force is too low or have part deformation if the clamping force is too high. Likewise, detecting the lubrication and contamination status can also prevent costly and unscheduled maintenance. In any case, DIN EN: 1550 specifies that static clamping force measurements are to be carried out at regular intervals. The new TESTit device measures and records the clamping and draw forces, even in the case of special versions.

The program for visualising the measured values has three display variants that can be viewed via a tablet: the speedometer display, a bar graph, or a line diagram for displaying the measuring force changes under speed. An integrated administration database allows users to select their current clamping device and their machine tool. All data is maintained and clearly presented in the database. The measured values are archived as PDF and CSV files.