Abrégé

A grinding disc for a grinding device, with a fastening interface formed for rotationally fixed fastening to a driven member of the grinding device such that the grinding disc, limited by a peripheral disc rim surface, can be driven into a grinding movement. The grinding disc has a fastening surface on a working side, to which fastening surface a grinding means provided with an abrasion layer can be or is detachably fastened via fastening means. The grinding disc has dust extraction openings arranged on the fastening surface and air intake openings arranged on the disc rim surface, which are connected respectively to dust outlet openings arranged on the device side of the grinding disc via an extraction channel system running in the grinding disc, with the result that, during grinding, the resulting grinding dust can be removed by means of a dust extraction device coupled to the grinding device.

Classes IPC  ?

• B24B 55/10 - Équipement d'enlèvement des poussières sur les machines à meuler ou à polir spécialement conçus pour machines de meulage portatives, p. ex. à guidage manuel

Abrégé

The invention relates to a grinding disc for a grinding device (12), having a fastening interface (15) formed on a device side (26) of the grinding disc (11) facing the grinding device (12), wherein: on a working side (27) axially opposite the device side (26), the grinding disc (11) has a fastening surface (28) on which dust extraction openings (35a-d) are disposed; air intake openings (36) are disposed on the disc rim surface (30) and are each connected via an extraction channel system (37) running in the grinding disc (11) to dust outlet openings (38) which are disposed on the device side (26) of the grinding disc (11) and are each connected via axial through-channels (39) to first dust extraction openings (35a) disposed on the fastening surface (28); a radial extraction channel (40) extending radially outwards branches off from each of the axial through-channels (39) and opens into one of the peripheral air intake openings (36); and an axial extraction channel (41) branches off from each of the radial extraction channels (40) and opens on the fastening surface (28) via a second dust extraction opening (35b).

Classes IPC  ?

• B24B 55/10 - Équipement d'enlèvement des poussières sur les machines à meuler ou à polir spécialement conçus pour machines de meulage portatives, p. ex. à guidage manuel
• B24D 9/08 - Plateaux circulaires servant de support au matériau souple
• B24D 7/10 - Meules agglomérées, ou meules comportant des segments abrasifs rapportés, conçues pour travailler autrement que par la périphérie, p. ex. par le côtéBagues ou accessoires pour le montage de ces meules munies de moyens de refroidissement

Abrégé

The invention relates to a surface machining apparatus (10), in particular a manual grinder, comprising a machining member (20) that has at least one machining surface (21-23) for grinding or polishing a workpiece surface (O); the machining member (20) includes a planar surface portion (26) with a planar machining surface (21) for machining planar workpiece surfaces (O) and at least one curved portion (27) with a curved machining surface (22-23) for machining curved workpiece surfaces (O). The curved portion (27) on said machining apparatus (10): - extends across a side of the machining member (20) that lies opposite the planar surface portion (26), - has a plurality of curved sections (31-36) which adjoin each other without interruption and each of which has a different radius of curvature (R1-R5), and - does not protrude beyond the planar machining surface (21-23) of the planar surface portion (26).

Classes IPC  ?

• B24D 15/02 - Outils à main ou autres dispositifs pour meuler, polir ou affûter, sans mouvement rotatif rigidesOutils à main ou autres dispositifs pour meuler, polir ou affûter, sans mouvement rotatif avec des surfaces de travail montées de façon rigide
• B24B 55/10 - Équipement d'enlèvement des poussières sur les machines à meuler ou à polir spécialement conçus pour machines de meulage portatives, p. ex. à guidage manuel

Abrégé

The invention relates to a surface-machining appliance (10), particularly a manual grinding appliance, with a machining body (20) comprising at least one machining surface (21-23) for the grinding or polishing machining of a workpiece surface (O), inflow openings (50-52) for sucking up dust-laden air being arranged on the at least one machining surface (21-23), said openings being connected in a flow-type manner, by means of a channel arrangement (57), to a suction connection (11) to which a suction device (AB) can be connected. The surface-machining appliance comprises an adjustment device (60; 260; 360) for adjusting effective flow cross-sections, by means of which inflow openings (50-52) of a first machining surface part (28) of the at least one machining surface (21-23) and inflow openings (50-52) of at least one second machining surface part (29, 30) of the at least one machining surface (21-23) are connected to the suction connection (11) in a flow-type manner, such that a suction action on the first machining surface part (28) and the at least one second machining surface part (29, 30) can be adjusted and/or switched off.

Classes IPC  ?

• B24B 55/10 - Équipement d'enlèvement des poussières sur les machines à meuler ou à polir spécialement conçus pour machines de meulage portatives, p. ex. à guidage manuel
• B24D 15/02 - Outils à main ou autres dispositifs pour meuler, polir ou affûter, sans mouvement rotatif rigidesOutils à main ou autres dispositifs pour meuler, polir ou affûter, sans mouvement rotatif avec des surfaces de travail montées de façon rigide