TOBI® brings security…
TOBI® makes customers happier…
Driving screws one-handed
In many situations, screws have to be driven in single-handedly. If one hand is needed to ensure a firm stance, the screw-bit combination must provide a firm grip to prevent the screw from falling. If this is not the case, the fitter is tempted to use their other hand to hold the screw. Releasing their grip for a moment hugely increases the risk of an accident.
In narrow installation situations or inaccessible locations, sheer lack of space means that fitters cannot use both hands. If the screw is not gripped firmly by the bit, it is almost impossible to drive in the screw properly. Installation therefore takes much longer. In practice, this often results in essential screws being left out, and the risk of warranty claims is greatly increased.
Overhead installation
Overhead work is exhausting, so it is important to reduce installation times and minimise the physical and mental strain on the fitter as far as possible. Screws falling off or wobbling on the bit means that it takes longer to get the job done, costing a lot of money, effort and nerves. In this respect, the form-fit connection in the TOBl® DRIVE SYSTEM is far superior to conventional screw driving systems.
Installing screws in inaccessible areas
Who on earth dreamed this up? Fitters often ask themselves this or similar questions every day. The screw position is in a place you can hardly reach or is concealed behind an edge, so there is little chance of setting the screw properly. In these situations, the holding function of the TOBl® DRIVE SYSTEM is far superior to existing systems.
Never a dropped screw
A unique holding function is ensured by the converging surfaces of the TOBI® DRIVE SYSTEM. Unlike magnetic holding functions, this means that even non-magnetic stainless steel, titanium and aluminium screws can be gripped securely. This system is unique in that the holding function covers the entire contact area and therefore has no negative effects on the tool life of the bit. Conventional cylindrical applications of screw driving systems (TX) with conical bits (HF/AW) confine the holding function to a “contact ring” area at the cost of a far shorter tool life.
Overhead installation
Overhead work is exhausting, so it is important to reduce installation times and minimise the physical and mental strain on the fitter as far as possible. Screws falling off or wobbling on the bit means that it takes longer to get the job done, costing a lot of money, effort and nerves. In this respect, the form-fit connection in the TOBl® DRIVE SYSTEM is far superior to conventional screw driving systems.
Installing screws in inaccessible areas
Who on earth dreamed this up? Fitters often ask themselves this or similar questions every day. The screw position is in a place you can hardly reach or is concealed behind an edge, so there is little chance of setting the screw properly. In these situations, the holding function of the TOBl® DRIVE SYSTEM is far superior to existing systems.
Never a dropped screw
A unique holding function is ensured by the converging surfaces of the TOBI® DRIVE SYSTEM. Unlike magnetic holding functions, this means that even non-magnetic stainless steel, titanium and aluminium screws can be gripped securely. This system is unique in that the holding function covers the entire contact area and therefore has no negative effects on the tool life of the bit. Conventional cylindrical applications of screw driving systems (TX) with conical bits (HF/AW) confine the holding function to a “contact ring” area at the cost of a far shorter tool life.
Very low bit costs due to greatly extended tool life
So who isn’t interested in saving costs? Tradespeople are just as keen to do so as the rest of us. Yet we are often told: “Where wood is chopped, splinters must fall …!” But what happens when the splinters are from the screw or the bit, and bit wear and tear is increased for these two reasons? Frequently, attention is first turned to “bit quality”. There is a growing clamour for higher quality and, in turn, more expensive bits. Bit quality undoubtedly has a major influence on tool life, but is it down to the bit alone? NO, of course not.
Many bits are destroyed by incorrect handling long before the actual “wear threshold” is reached. And what about the screw itself? Has anyone ever spared a thought to the over-arching role played by the contact area between the screw head drive and bit when it comes to bit wear and tear?
Would it not be more to the point to design the screw drive so that “bit-chewing” handling errors are prevented in the first place?
Very low bit costs due to greatly extended tool life
So who isn’t interested in saving costs? Tradespeople are just as keen to do so as the rest of us. Yet we are often told: “Where wood is chopped, splinters must fall …!” But what happens when the splinters are from the screw or the bit, and bit wear and tear is increased for these two reasons? Frequently, attention is first turned to “bit quality”. There is a growing clamour for higher quality and, in turn, more expensive bits. Bit quality undoubtedly has a major influence on tool life, but is it down to the bit alone? NO, of course not.
Many bits are destroyed by incorrect handling long before the actual “wear threshold” is reached. And what about the screw itself? Has anyone ever spared a thought to the over-arching role played by the contact area between the screw head drive and bit when it comes to bit wear and tear?
Would it not be more to the point to design the screw drive so that “bit-chewing” handling errors are prevented in the first place?
Maximum utilisation of the contact area
Unlike in the case of the internal hexalobular (TX), which has only narrow wing surfaces for torque transmission, the TOBI® uses the converging surfaces between the screw head and drive profiles to transfer the torque. As the available area is approximately ten times larger, the pressure can be massively reduced and tensions arising in the bit can be minimised. The larger the contact area, the smaller the load.
No bit bending in the screw head
Due to the converging and slightly conical contact surfaces, the TOBI® bit self-aligns with the screw axis automatically as it is driven into the screw head, so there is no chance of the bending caused by the play between the bit and screw drive on conventional TX screw drives. Damage to bits (deformation, chunking) caused by incorrect handling is minimised.
Service life up to 100 times longer
Utilisation of the maximum available contact area is the most important design prerequisite to achieve the optimum bit service life. Combined with up to 100% axial alignment of the bit with the screw axis (torque transmission) effectively preventing handling errors, in laboratory tests the tool life achieved by the TOBI® DRIVE SYSTEM is more than 70 times longer than conventional TX bits. (Test set-up with M6 screw with TOBI®30 and TX30 and 15 Nm tightening torque in the pulser).
Maximum utilisation of the contact area
Unlike in the case of the internal hexalobular (TX), which has only narrow wing surfaces for torque transmission, the TOBI® uses the converging surfaces between the screw head and drive profiles to transfer the torque. As the available area is approximately ten times larger, the pressure can be massively reduced and tensions arising in the bit can be minimised. The larger the contact area, the smaller the load.
No bit bending in the screw head
Due to the converging and slightly conical contact surfaces, the TOBI® bit self-aligns with the screw axis automatically as it is driven into the screw head, so there is no chance of the bending caused by the play between the bit and screw drive on conventional TX screw drives. Damage to bits (deformation, chunking) caused by incorrect handling is minimised.
Service life up to 100 times longer
Utilisation of the maximum available contact area is the most important design prerequisite to achieve the optimum bit service life. Combined with up to 100% axial alignment of the bit with the screw axis (torque transmission) effectively preventing handling errors, in laboratory tests the tool life achieved by the TOBI® DRIVE SYSTEM is more than 70 times longer than conventional TX bits. (Test set-up with M6 screw with TOBI®30 and TX30 and 15 Nm tightening torque in the pulser).
Optimum screw setting
When the screw is set optimally, it prevents any troublesome wobbling of the screw tip and spares the tool. The exact fit of the tool during torque transmission prevents extreme one-sided strain on the bit and ensures that torque is transmitted into the part in perfect alignment with the screw axis. This makes it easier for the fitter especially when inserting screws in difficult locations and prevents premature tiring through more effort.
No “wobbly” screw tips
In cases where the screw tip must first bore a hole in the part, especially with thin metal screws or screws with drill tips, the exact alignment of the bit with the screw axis ensures that perpendicular pressure is always applied to the part. The wobbling of the screw tip that often occurs on other drive systems is eliminated and the screw engages with the material much faster.
No screw skewing
Thanks to the slightly conical contact surfaces between the bit and screw head and the optimised penetration depth of the bit in each case, an almost “play-free” force fit is created between the tool and the screw. Torque transmission skewed in relation to the screw axis, with negative effects on tool life and greater exertion on the part of the fitter, is thus reliably avoided.
Optimum exertion of force
The more efficiently the tool transmits the torque to the screw position, the more effectively the effort of the fitter is used and potential tiring is avoided.
No “wobbly” screw tips
In cases where the screw tip must first bore a hole in the part, especially with thin metal screws or screws with drill tips, the exact alignment of the bit with the screw axis ensures that perpendicular pressure is always applied to the part. The wobbling of the screw tip that often occurs on other drive systems is eliminated and the screw engages with the material much faster.
No screw skewing
Thanks to the slightly conical contact surfaces between the bit and screw head and the optimised penetration depth of the bit in each case, an almost “play-free” force fit is created between the tool and the screw. Torque transmission skewed in relation to the screw axis, with negative effects on tool life and greater exertion on the part of the fitter, is thus reliably avoided.
Optimum exertion of force
The more efficiently the tool transmits the torque to the screw position, the more effectively the effort of the fitter is used and potential tiring is avoided.