Hatebur Introduces SAM Technology for Productivity and Sustainability Gains

Reinach, Switzerland – Hatebur Metalforming Equipment Ltd’s innovation engine runs at full speed: The Swiss technology leader for hot and cold forming unveils the SAM technology (servo-hydraulic ejector module) on the ultra-fast hot former HOTmatic HM 35. The SAM technology, which has been put to the acid test on a prototype in multiple trials, represents a further innovation step after the servo-hydraulic bar stop. It will make manufacturers in the roller bearing and automotive industries more productive and versatile.

The use of servo-hydraulic ejector drive makes the previously used mechanical components obsolete. The modules, which can be installed at each forming station, can be individually controlled and optimally adjusted via touch screen.“This leads to noticeably shorter retooling times because the manual tasks are no longer needed,” explains Carsten Sieber, Product Manager, Hatebur. “The SAM technology does not only improve the efficiency of the users. Thanks to the innovative additional functionalities, which can be added and adjusted based on the customers’ needs, the technology unlocks completely new processing possibilities and is a real game changer.”

The ejection process of the forging from the die takes place in two phases: the loosening and the pushing out of the part. The ejector module has an integrated pressure and position measuring system, with which the movement and the ejector force can be exactly determined. The energy consumption was reduced to a minimum thanks to a sophisticated cylinder design. The integrated, wear-free braking function prevents the parts from falling down and improves process security.

New processing possibilities

One of the new functions of the module is the combination of descaling and in-die forming. With this combination, two process steps can be handled in one operation: in the first step, the scale in front of the die is removed during an upsetting process, and in the second step, the blank is inserted into the die and formed into the required shape. As a result, the manufacturer benefits from a better tool life. Handling two process steps in one operation also allows to produce more complex parts. 

Minimized raw material and power consumption

Another highlight is the slim slug process which the Hatebur development team uses. Thanks to the forming of the slug thickness in an intermediate position between the ejector and the punch, a reduced slug thickness is achieved. Depending on the configuration, the thickness can even be reduced to almost half of the original. Sieber: “With a combination ring 6008 blank, which has the ideal conditions for savings, we can save 25 grams of raw material—this is equivalent to 8% of the weight. This generates an incredible saving of 250 tons for an annual volume of 10 million parts.” Because the raw material is one of the biggest cost drivers in the manufacturing of forged parts, such saving potentials are crucial to manufacturers.

Moreover, raw material savings go hand in hand with reduced CO2 emissions and reduced energy consumption. Another new combination possibility is the piercing and separating of the rings. Thanks to the SAM drives this procedure is more controlled and has an increased process reliability. The controlled movement of the module is made possible by the integrated position measurement system, facilitating the accurate piercing of the parts. The inner ring can be ejected in a slow, gentle way because the empty stroke is eliminated. Furthermore, both rings can be discharged on two separate tracks. The SAM technology is available on the hot former HOTmatic HM35. In the future, the Hatebur experts plan to integrate the innovative technology into other machines as well. 

Image Source: Hatebur

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