TOBI® creates competitive advantages…
TOBI® conserves resources…
TOBI® saves money…
Preventing automated screw driving down times
When analysing why down times occur in automated screw driving, a pattern of recurrent key causes emerges. Increased tool wear and tear results in long tool change times. Time is also lost when fitting the screw, because on conventional TX drives, the bit first has to find the right position. Moreover, screws that are not aligned exactly with the screw position often fail to find the hole and hit the part instead, become jammed and thus cause the entire system to malfunction. These criteria were taken into special account in the development of the TOBI® system. Use of the TOBI® DRIVE SYSTEM ramps up productivity and thus competitiveness.
100% axial alignment
The exact alignment of the screw with the screw position prevents the screw missing the hole. Machine down times caused by jamming or blocking the screw position are minimised, while damage to parts and threads is avoided.
Insertion during rotation
The slightly conical design of the TOBI® system ensures easy insertion of the screw tool in the screw head – even while the spindle is rotating. Time losses caused by difficulty finding the screw drive profile in the screw head are eliminated.
Elimination of expensive vacuum systems
The exact fit of the bit in the screw drive profile combined with a slight clamping effect by the conical contact areas keeps even screws made of non-ferrous metals like stainless steel, titanium or aluminium firmly in place. As the vacuum required to hold the screw in place is superfluous, resources are saved and high energy costs are eliminated.
100% axial alignment
The exact alignment of the screw with the screw position prevents the screw missing the hole. Machine down times caused by jamming or blocking the screw position are minimised, while damage to parts and threads is avoided.
Insertion during rotation
The slightly conical design of the TOBI® system ensures easy insertion of the screw tool in the screw head – even while the spindle is rotating. Time losses caused by difficulty finding the screw drive profile in the screw head are eliminated.
Elimination of expensive vacuum systems
The exact fit of the bit in the screw drive profile combined with a slight clamping effect by the conical contact areas keeps even screws made of non-ferrous metals like stainless steel, titanium or aluminium firmly in place. As the vacuum required to hold the screw in place is superfluous, resources are saved and high energy costs are eliminated.
Very low bit costs due to greatly extended tool life
In fully automated screw installation, every worn bit not only incurs tool costs, but also high costs due to tool replacement time. Ultimately, every tool change means a down time, so by making the most of the available contact area between the bit and screw head drive, bit wear and tear and thus tool change times can be reduced to a minimum on the TOBI® DRIVE SYSTEM.
Very low bit costs due to greatly extended tool life
In fully automated screw installation, every worn bit not only incurs tool costs, but also high costs due to tool replacement time. Ultimately, every tool change means a down time, so by making the most of the available contact area between the bit and screw head drive, bit wear and tear and thus tool change times can be reduced to a minimum on the TOBI® DRIVE SYSTEM.
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® system uses the converging surfaces between the screw head and drive profiles for this purpose. 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. Bit damage (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® system uses the converging surfaces between the screw head and drive profiles for this purpose. 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. Bit damage (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).
Lightweight construction / miniaturisation
Compared to existing screw driving systems (e.g. TX), thanks to a ten times larger contact area, TOBI® can achieve the required torques with significantly smaller drive sizes and shallower tool penetration depths. New horizons in screw design are thus opened up. Smaller, flatter and thus much lighter screw heads can be designed while still complying with torque transmission requirements. This saves resources and addresses demand for ever lighter, ever smaller parts.
Reduction of head height and diameter
Whereas on existing screw driving systems (e.g. TX), the screw head diameter and height are determined in advance by the drive sizes required for the transmission of the specified tightening torques, these physical limitations are overridden by the innovative approach of “coverage, not leverage”. New horizons are opened up to engineers in the design of screw connections.
Cost savings
No matter whether through the design of lighter, less expensive screws, increased productivity in automated screw installation, the minimising of tool costs or elimination of energy and cost-intensive vacuum systems, TOBI® offers varied potential for saving costs. Please contact us, we will be happy to work out the benefits for you and your customers.
Ideal applications for confined spaces
In addition to the advantage of smaller and lighter screw heads, screws can be planned very close to the edges or corners of a part. Especially in confined spaces, this was hardly possible with existing screw driving systems.
Reduction of head height and diameter
Whereas on existing screw driving systems (e.g. TX), the screw head diameter and height are determined in advance by the drive sizes required for the transmission of the specified tightening torques, these physical limitations are overridden by the innovative approach of “coverage, not leverage”. New horizons are opened up to engineers in the design of screw connections.
Cost savings
No matter whether through the design of lighter, less expensive screws, increased productivity in automated screw installation, the minimising of tool costs or elimination of energy and cost-intensive vacuum systems, TOBI® offers varied potential for saving costs. Please contact us, we will be happy to work out the benefits for you and your customers.
Ideal applications for confined spaces
In addition to the advantage of smaller and lighter screw heads, screws can be planned very close to the edges or corners of a part. Especially in confined spaces, this was hardly possible with existing screw driving systems.