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Heesemann is one of the worldwide leading manufacturers of sanding machines. |
| Employees : | 50+ |
| Year established : | 1933 | Business : | Manufacturer |
| Company name : | Karl Heesemann | |
| Street : | Reuterstr. 15 , 32547 | |
| City : | Bad Oeynhausen | |
| Website : | www.heesemann.com | |
| E-mail : | sales@heesemann.de | |
| Phone : | +49 5731 188 0 | |
| Fax : | +49 5731 188 129 | |
| Office Type : | Head office | |
| Country Name : | Germany | |
In 1933, during an economically difficult period of time the engineer Karl Heesemann founded the company Heesemann. Right from the beginning he specialized in the production of sanding machines. After the Second World War automatic sanding machines for the permanently growing furniture industry were developed. During this period basic inventions were made which are still milestones in the sanding technique today. Karl Heesemann responsibly led the enterprise up to an advanced age of 93 years until he died in February 2002. The management and all employees feel obliged to ensure the company´s role of innovative forerunner in the sanding technique for the future.
Milestones of the sanding technique
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1952 |
The PK 1, world wide the first running through profile sanding machine was the forerunner of the contemporary complex profile and edge sanding machines and installations |
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1956 |
The development of the pressure segment belt which for the first time, allowed a uniform sanding over the entire surface by means of a long belt is the base for all present cross sanding units and automatic long belt sanding machines. |
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1963 |
Thanks to the mechanical cross sanding with presanding against the fibre direction and the following finish sanding in fibre direction a surface quality has been achieved which had not been known before. |
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1981 |
The further development of the special pressure beam including electronic pressure elements is the base`s for sanding machines with electronic pressure beam. |
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1987 |
The innovative and world wide unique electromagnetic pressure beam system in all Heesemann surface sanding machines today is able to steplessly adjust the pressure force on each individual pressure element of the pressure beams. The result is a very adaptable pressure control especially in the edge area. |
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1997 |
The sanding centre SZ 2 for the first time allows the processing of variably formed contours by means of belt sanding units. |
 | Calibration sanding with highest machine precision Steel calibration drums (rollers) are the premise for a uniform surface during the calibrating process. In contrast to rubber rollers the steel rollers avoid the so-called "washed-out" effects when processing soft woods. The calibrating machines from Heesemann are equipped with rollers at an optimized diameter ensuring a good stock removal through a wide opening of the sanding belt. The precise guiding of the workpiece is ensured by press-on lips in front of and behind every roller sanding unit. In order to guarantee a very calm running of the rollers they are balanced very precisely. The exact thickness measuring of the machine is realized through precise and solid worm gears. In order to get the correct final thickness of the workpieces when using different sanding papers with corresponding grits and therefore paper thicknesses it is possible to integrate a mechanical sanding belt grit compensation device. The adjustment of several calibrating sanding units to each other is realized from the terminal by means of numerically controlled positioning drives. The following fine sanding process can be realized with cross- and longitudinal sanding units each with segmented pressure beams. |
 | Graphic Operation Terminal with Touch Screen For years Heesemann has been following a clear and easy concept of operating for their sanding machines. A start button for automatic starting of the machine, a stop button and an emergency stop button are all switch elements the operator needs. In addition a graphic operation terminal for adjusting the parameters offers access to all functions of the machine. After finding the correct adjustment it can be saved as a programme in the memory and is easily available for future use. For the standard machines two operation terminals with different performances are available. |
 | Low noise level of the sanding units The sanding units of a Heesemann machine achieve a very low noise level by using a ripped belt for the drive. These ripped belts are working almost free of vibration compared to individual v-belts. By driving the two lower drums of the sanding unit at a synchronised speed the sanding unit is able to transmit a high power rate with low sanding belt tension. This enables the pressure beam to compensate big tolerances and gives the sanding paper the capability to adapt itself to bended workpieces and such with tolerances in thickness. Exactly balanced drums are positively affecting the noise emission. |
 | sanding with the cross sanding unit Due to the sanding direction of the cross belt 90 ° to the veneer or grain direction the fibres are cut against the edges of the pores. Therefore, a rising up of these fibres after the lacquering process is avoided. The cross belt produces homogenous surfaces giving an important pre-condition for thin lacquering. Additionally the so-called washed - out effects when soft woods with different annual rings are processed can be avoided. This picture often appears when only longitudinal sanding units are used for the processing of these wood types. Heesemann is a pioneer in the area of industrial cross sanding. |
