In a sanding machine for sanding/finishing panels made of wood, metal or the like, an abrasive belt is moved so as to cause it to come into contact with a panel by a plurality of thrust elements, which are distributed inside the abrasive belt, and are moved perpendicularly to the panel by respective actuator cylinders, each of which has an output rod which is moveable between a lowered operating position and a raised rest position under the thrust of a pressurised gas supplied in a continuous manner to an upper chamber of the actuator cylinder and in a selective manner to a lower chamber of the actuator cylinder itself.

In a sanding machine for sanding/finishing panels made of wood, metal or the like, an abrasive belt is moved so as to cause it to come into contact with a panel by a plurality of thrust elements, which are distributed inside the abrasive belt, and are moved perpendicularly to the panel by respective actuator cylinders, each of which has an output rod which is moveable between a lowered operating position and a raised rest position under the thrust of a pressurised gas supplied in a continuous manner to an upper chamber of the actuator cylinder and in a selective manner to a lower chamber of the actuator cylinder itself.

A base assembly includes a first horizontal brace, a second horizontal brace, a first horizontal interconnection interconnecting front ends of the first and second horizontal braces, a second horizontal interconnection interconnecting rear ends of the first and second horizontal braces, and first, second, third and fourth vertical posts each releasably secured to the underside of the worktable and the rear ends of the first and second horizontal braces; a control switch secured to the front ends of the first and second horizontal braces, and the first interconnection; and a detachable worktable including first and second sliding rods, an opening, first and second bifurcations, a housing; a chute; first and second bossed holes, two opposite third bossed holes, two opposite fourth bossed holes, first and second C-shaped clamps, a transverse second threaded hole, and screws.

A base assembly includes a first horizontal brace, a second horizontal brace, a first horizontal interconnection interconnecting front ends of the first and second horizontal braces, a second horizontal interconnection interconnecting rear ends of the first and second horizontal braces, and first, second, third and fourth vertical posts each releasably secured to the underside of the worktable and the rear ends of the first and second horizontal braces; a control switch secured to the front ends of the first and second horizontal braces, and the first interconnection; and a detachable worktable including first and second sliding rods, an opening, first and second bifurcations, a housing; a chute; first and second bossed holes, two opposite third bossed holes, two opposite fourth bossed holes, first and second C-shaped clamps, a transverse second threaded hole, and screws.

The present invention relates to a device for sanding surfaces of a workpiece, preferably at least portions of which are made of wood, a manufactured wood product, plastic or such like. The present invention further relates to a sanding method and to a sanding machine comprising: a carrier element (11), a plurality of pressure segments (12a, 12b, 12c) which can be actuated, in particular electromagnetically actuated, and which are disposed along the carrier element (11) and are each designed to press a sanding element, especially a sanding belt (21), against a workpiece (1), and at least one sensor (13a, 13b, 13c) for sensing a compressive force applied to a workpiece by one of the pressure segments.

The present invention relates to a device for sanding surfaces of a workpiece, preferably at least portions of which are made of wood, a manufactured wood product, plastic or such like. The present invention further relates to a sanding method and to a sanding machine comprising: a carrier element (11), a plurality of pressure segments (12a, 12b, 12c) which can be actuated, in particular electromagnetically actuated, and which are disposed along the carrier element (11) and are each designed to press a sanding element, especially a sanding belt (21), against a workpiece (1), and at least one sensor (13a, 13b, 13c) for sensing a compressive force applied to a workpiece by one of the pressure segments.

A polishing apparatus which can efficiently polish an entirety of a back surface of a substrate, with the back surface facing downward, is disclosed. The polishing apparatus includes: a substrate holder configured to rotate the substrate; a polishing head configured to polish the back surface of the substrate; a tape advancing device; and a translational rotating mechanism configured to cause the polishing head to make a translational rotating motion. The substrate holder includes a plurality of rollers which are rotatable about their own axes. The plurality of rollers have substrate-holding surfaces capable of contacting a periphery of the substrate. The polishing head is disposed below the substrate-holding surfaces. The polishing head includes a polishing blade configured to press the polishing tape against the back surface of the substrate, and a pressing mechanism configured to push the polishing blade upward.

A polishing apparatus which can efficiently polish an entirety of a back surface of a substrate, with the back surface facing downward, is disclosed. The polishing apparatus includes: a substrate holder configured to rotate the substrate; a polishing head configured to polish the back surface of the substrate; a tape advancing device; and a translational rotating mechanism configured to cause the polishing head to make a translational rotating motion. The substrate holder includes a plurality of rollers which are rotatable about their own axes. The plurality of rollers have substrate-holding surfaces capable of contacting a periphery of the substrate. The polishing head is disposed below the substrate-holding surfaces. The polishing head includes a polishing blade configured to press the polishing tape against the back surface of the substrate, and a pressing mechanism configured to push the polishing blade upward.

The present invention relates to a grinding device for machining an, in particular plate-shaped workpiece (W). The grinding device comprises an emitter (31) for emitting electromagnetic waves in the direction of the abrasive belt (10) and a detector (32) for detecting electromagnetic waves which are reflected by the abrasive belt (10).

In a sanding machine for sanding/finishing panels made of wood, metal or the like, an abrasive belt is moved so as to cause it to come into contact with a panel by a plurality of thrust elements, which are distributed inside the abrasive belt, and are moved perpendicularly to the panel by respective actuator cylinders, each of which has an output rod which is moveable between a lowered operating position and a raised rest position under the thrust of a pressurised gas supplied in a continuous manner to an upper chamber of the actuator cylinder and in a selective manner to a lower chamber of the actuator cylinder itself.