The present disclosure relates to a fixing device arranged to be fastened to a machining head such as a drill head. A machine tool for machining workpieces such as metal sheets at a machining point is also disclosed. The workpieces may be machined from a machining side. A fastening device is included and adapted for fastening the fixing device to the machining head. A fixing head is included and adapted for releasably, locally fixing the workpiece on its machining side and adjacent to the machining point. A controller is included and configured to control the fixing and releasing of the fixing head on a workpiece.

A head of a cutting device includes a base configured to be fixed to a machine tool, a cylindrical suction nozzle integral with the base, a connector integral with the base and configured to receive a suction pipe. The suction nozzle is perforated by at least one oblong hole, for example parallel to an axis of the suction nozzle.

A mobile machine tool for segmentally machining, in situ, a component, in particular a component of a turbine, which is rotatable about an axis of rotation. The machine tool has a main body, a support element which is held on the main body so as to be movable about a C-axis along a circular-arc-shaped guide path, and a tool module which is held on the support element and is designed to receive a tool. The tool module is located on the support element so as to be linearly movable. A method segmentally machines, in-situ, a component which is mounted in a stationary body so as to be rotatable about an axis of rotation.

A coupling (40) for connecting a suction line (31) to a first fluid flow and an exhaust gas flow, the coupling (40) comprising first and second portions (51, 52). The first portion (51) is adapted to receive an end section (34) of the suction line (31) and the second portion (52) is adapted to cooperate with the first portion (51) for engaging a portion of the end section (34) therebetween. The first portion (51) has an opening (63) for receiving an exhaust outlet (16, 17) configured to deliver an exhaust gas flow into the first portion (51). Engagement of the end section (34) between the first and second portions (51, 52) serves to compress a marginal portion of a side wall (37) or side port (36) in the end section (34) of the suction line (31). An apparatus (10) including a rotary tool element (19) and including the coupling (40) is also disclosed.

A stage for cutting a substrate includes: a body member; a plurality of first discharging members, each including a first suction portion in the body member and a first partition wall portion connected to the first suction portion and protruding from a top surface of the body member, each of the first discharging members defining a first space connected to an outside; a plurality of second discharging members, each including a second suction portion in the body member and a second partition wall portion connected to the second suction portion and protruding from the top surface of the body member, each of the second discharging members defining a second space connected to the outside; a plurality of connecting pipes each connected to the first partition wall portion and the second partition wall portion; and a plurality of supply pipes connected to the connecting pipes.

A dust collection assembly for a computer numerical control (CNC) cutting machine includes an adapter configured to couple to an arm of the CNC cutting machine and a head telescopically coupled to the adapter by a plurality of nested members. The CNC cutting machine includes the arm supporting a spindle and a tool holder coupled for co-rotation with the spindle. Each of the plurality of nested members are collapsible relative to each other. The head is movable between an extended position in which the nested members are configured to surround the tool holder and a tool bit, and a retracted position in which at least some of the nested members are telescopically received in the adapter. The head defines an inlet fluidly connected to the plurality of nested members when the head is at least in the extended position. The inlet is configured to fluidly connect to a vacuum.

A dust collecting system includes a power tool configured to perform processing operation on a workpiece by driving a tool accessory and a dust collector configured to collect dust generated by the processing operation. The power tool includes a first motor, a driving mechanism, a body housing, a first detecting device, an operation member and a second detecting device. The first detecting device is configured to detect an operation of pressing the tool accessory against the workpiece. The operation member is configured to be externally operated by a user. The second detecting device is configured to detect an operation of the operation member. The dust collector includes a second motor and a fan. The dust collecting system includes a first control device configured to control driving of the second motor based on detection results of the first detecting device and the second detecting device.

A debris collection system for use in cutting or drilling holes in a ceiling with a hole saw. The debris collection system allows a user to avoid or limit exposure to dust and debris created by cutting or drilling overhead holes in drywall or wood. A clear rigid debris shield is temporarily attachable to the ceiling so that the user does not have to hold it in place while operating the hole saw. The hole saw is operably contained within a debris collection chamber defined within the debris shield when in use. A vacuum hose connects to a vacuum port in a cylindrical sidewall of the debris shield at one end and is attachable to a portable vacuum at an opposite end to create suction and remove debris from the debris collection chamber. A hose hanger is attachable to the ceiling between the debris shield and the portable vacuum to support the vacuum hose and keep it out of the way.

A power tool having a power tool housing, a motor, a tool moved relative to the housing by the motor, a fan rotated by the motor such that a fluid flow with debris generated by tool is moved into the fluid inlet by the fan and through the discharge outlet, and a filter that is removably attached to the power tool housing. The power tool housing includes a fluid inlet and a discharge outlet. The filter includes a filter media for separating the debris from the flow of fluid. The filter media defines a collection container for storing the debris. The filter also includes an opening through which the flow of fluid with the debris enters the collection container, and a valve that is moveable between a closed position, in which the opening is closed, and an open position, in which the opening is open. The valve includes a duckbill check valve.

The invention refers to a filter arrangement for filtering dust-laden air (7) generated by a hand-guided power tool (1), in particular a sander or a grinder, during operation of the power tool (1). The filter arrangement comprises a filter cartridge (13) having a hollow casing (14), a filter element (22) located inside the casing (14), an air inlet port (15) located downstream in respect to an airflow (8) through the filter cartridge (13) and in respect to the filter element (22) and adapted to be pneumatically connected to the power tool (1) in order to allow the dust-laden air (7) generated by the power tool (1) to flow into the casing (14), and an air outlet port (20) located upstream in respect to the airflow (8) through the filter cartridge (13) and in respect to the filter element (22), the air outlet port (20) adapted to allow filtered air (9) leave the filter cartridge (13). It is suggested that the filter arrangement comprises an active airflow generating device (30) with a fan (40) comprising a plurality of blades (44) and driven by an electric motor (38) separate from an electric motor of the power tool (1), the airflow generating device (30) being in pneumatic connection with the air inlet port (15) of the filter cartridge (13) or with the air outlet port (20) of the filter cartridge (13) in order to generate or support the airflow (8) through the filter cartridge (13).