Abstract: The invention relates to a grinding machine for grinding a surface of a workpiece, wherein the grinding machine comprises a plurality of grinding elements (2) and at least one drive device, by means of which the plurality of grinding elements (2) can be set in oscillatory motion, wherein the grinding machine comprises at least two supporting structures (4), on which at least one grinding element (2) is arranged and which can be moved in an oscillatory manner in directions opposite each other by the at least one drive device.

Abstract: A processing machine (1) has a machine frame (2) and a processing element (3) arranged so as to be movable relative thereto via a drive shaft (5). The drive shaft (5) is coupled with the machine frame (2) and the processing element (3) by means of a floating-bearing arrangement (13). The floating-bearing arrangement (13) has at least two rolling-contact bearings (16, 19, 22, 24), with a first rolling-contact bearing (19, 24), coupled with the drive shaft (5), and a second rolling-contact bearing (16, 22), arranged on the machine frame (2), and a common connecting bearing shell (15, 25, 26). The connecting bearing shell (15, 25, 26) supports the rolling-contact bodies of the first and second rolling-contact bearings (16, 19, 22, 24) and is driven.

Abstract: Disclosed is a grinding machine comprising oscillating driving means (3, 4) for setting grinding means (1) into an oscillating grinding motion and an actuation device (7) that is provided with a plurality of actuation areas (8) which can be triggered such that different zones of the grinding means (1) are alternately actuated independently of the oscillating grinding motion.

Abstract: A processing machine (1) has a machine frame (2) and a processing element (3) arranged so as to be movable relative thereto via a drive shaft (5). The drive shaft (5) is coupled with the machine frame (2) and the processing element (3) by means of a floating-bearing arrangement (13). The floating-bearing arrangement (13) has at least two rolling-contact bearings (16, 19, 22, 24), with a first rolling-contact bearing (19, 24), coupled with the drive shaft (5), and a second rolling-contact bearing (16, 22), arranged on the machine frame (2), and a common connecting bearing shell (15, 25, 26). The connecting bearing shell (15, 25, 26) supports the rolling-contact bodies of the first and second rolling-contact bearings (16, 19, 22, 24) and is driven.

Abstract: A blowing device for a belt grinding machine has a nozzle arrangement having nozzles positioned relative to its grinding belt for blowing cleaning air jets onto the circulating grinding belt. The device further has an oscillating drive to oscillate the nozzle arrangement in the longitudinal direction thereof. A pair of elastic members suspend the nozzle arrangement, which is oscillated in the longitudinal direction by using a magnetic field. A ferromagnetic member is connected to the nozzle arrangement and is positioned within the magnetic field produced by an electric coil. By varying the magnetic field, the nozzle arrangement can be moved in the longitudinal direction, the spring providing an elastic restoring force to move the nozzle arrangement is the opposite direction when the magnetic field is turned off.