Handheld screwdrivers

The choice of screw and screwdriver will determine whether the joint is flexible or rigid. Behaviour changes with the material, and the tightening force it can withstand is not always the same. 

The geometry type and pitch affect the insertion speed and joint deformation, while the head shape, i.e. the recess, affects how effective it is at transmitting the tightening torque. 

This is measured in Nm and is the torque applied to the screw, which is converted into the tightening force that joins the two elements together to hold them or close the joint. Mechanical or electronic control systems can regulate it within the limits of each screwdriver. 

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There are many tightening technologies and tightening torque control systems, and the most advanced include electronic torque monitoring and/or torque/angle control with varying levels of accuracy. 

The assembly method affects operators’ operation and productivity. Consider, for example, when medium and large sets of identical screws are to be tightened: screws are sent automatically to the tightening point, eliminating the need to pick them up and position them by hand and increasing productivity by 35%. 

Speed is closely linked to productivity, but tightening or loosening in less time also depends on how the operator is assisted at different stages of the process. Each screwdriver has its own speed range, which, with electric tools, can be adjusted to suit the application. 

Each technology has its features. Since we produce both versions, we will help you analyse all the factors so that you can make the best choice for your production process. If, for example, the solutions will be used for multiple components and/or applications, it may be more beneficial to choose electric technology with which screwdrivers can be programmed to perform a range of assemblies with different torque and speed parameters, and with different monitoring and/or control steps. 

The various ergonomic and starting features offered by straight-grip, pistol-grip and angle-grip screwdrivers must be chosen by carefully assessing the operating layout, component to be tightened, tightening point position, operations to be carried out and screws used. 

A tightening solution is ergonomic when it improves operators’ physical, organisational and cognitive ergonomics, increasing safety and effectiveness. It must therefore be designed and built correctly, ethically and sustainably, but of equal importance, it must be used in the right way and maintained properly. 

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