Abstract: A method for controlling a power tool includes ascertaining a workpiece characteristic of the workpiece to be processed from previously acquired measured values, determining the workpiece material from the workpiece characteristic of the workpiece to be processed, specifying initial values, which are suitable for processing the workpiece made of the determined workpiece material using the power tool, for machine parameters such as feed, speed, and torque, storing the initial values for putting the power tool into operation with machine parameters set to the initial values and/or putting the power tool into operation with machine parameters set to the initial values. A cooling constant is ascertained according to the Newtonian cooling law as the workpiece characteristic of the workpiece to be processed. To ascertain the cooling constant, the ambient temperature is measured, the workpiece is heated, and the actual temperature of the workpiece is measured, whereupon the cooling constant is computed.

Abstract: A miter saw and a workpiece support are provided. The workpiece support has a circular disc-shaped turntable penetrated by a saw blade slot serving as a passage for the saw blade lowered into the working position, a holder on one side for fastening the saw unit, and a radial arm which extends the turntable and the saw blade slot in the longitudinal direction of the slot radially outwards on a side opposite the holder. A radial arm connection is provided, on which the radial arm is detachably and co-rotatably attached to the turntable, or on which a radially outer radial arm outer portion of the radial arm is detachably and co-rotatably attached to a radially inner radial arm inner portion of the radial arm formed integrally with the turntable. The miter saw has blade that can be moved transversely and lowered from a position above the workpiece support.

Abstract: A hand-held electric hammer includes a handle arrangement on a tool carrier shank in which a striking mechanism actuated by an electric motor is accommodated and at the lower end of which a tool holder is arranged, which is suitable for receiving a tool attachment in the form of a spade blade, a demolition chisel, or a PVC scraper. The handle arrangement is designed as a T-shaped T-handle seated on the tool carrier shank, so that on both sides of the tool carrier shank there are two handles for both a left and a right hand of a user, whereby in the lower half of the tool carrier shank an additional handle stub is attached protruding in parallel with the T-handle from the tool carrier shank, which allows the electric hammer to be gripped with one hand on the T-handle and with the other hand on the additional handle stub.

Abstract: The invention is concerned with a shielding device (1) for shielding a saw blade (3) or band of a sawing machine against access by an operator and against ejection of workpiece parts, which can be attached to the sawing machine in such a way that, in a working position, it covers the saw blade (3) or band towards the operator. The shielding device (1) comprises a temperature monitoring unit (2) which has a temperature sensor (4). The invention is characterized in that the temperature sensor (4) operates without contact and, with the shielding device (1) mounted on the sawing machine and located in the working position, is directed towards the toothing of the saw blade (3) or band, and a display device (5) displays the surface temperature detected by the temperature sensor (4) on the surface of the toothing of the saw blade (3), wherein the temperature monitoring unit (2) is formed as an autarkic operating unit and is mounted on the shielding device (1) such that it is detachable by an operator without tools.

Abstract: The invention is concerned with a string reel (1) for being mounted on a cutting head of a string trimmer in a rotatable manner in mowing operation. The string reel (1) is constructed as an exchangeable wearing part, onto which a number of mowing string strands (2) is wound up, for example two mowing string strands (2), so that in mowing operation each free thread end is pulled radially outwards by centrifugal force and the piece of thread pulled outwards by the rotary movement in mowing operation and located at the free thread end can knock off plant stalks. The mowing string strands (2) have a greater length than the respective thread piece pulled outwards in mowing operation at the free thread end, so that the number of mowing string strands (2) can be pulled out at the free thread end after wear of the thread piece.

Abstract: A push stick for a table saw and a table saw with the push stick are provided. The push stick includes a gripping possibility for a machine operator at its operator-side end. A workpiece engagement notch is formed at the push stick's workpiece-side end. The notch includes a push surface facing in an intended feed direction of the workpiece and a holding-down surface protruding therefrom at the top under a preferably right angle. The push stick includes a detection device which detects whether the push surface and the holding-down surface lie flat against the workpiece. The push stick further includes a signaling device which emits a flat contact signal when the detection device has detected a flat contact of the push surface and the holding-down surface on the workpiece. The signal therefore signals whether the push surface and the holding-down surface lie flat against the workpiece.

Abstract: A rip fence module for positioning workpieces with their edge facing away from a tool on a machine table at a certain distance to the tool, comprising: a superstructure overlapping the machine table presenting a workpiece stop for the workpiece to be treated extending in a longitudinal direction, at least one guided portion which is insertable and guidable in an allocated guide groove provided on the machine table side extending in an extension direction transversely to the longitudinal direction, and by which the superstructure is supported movably in the guide groove in the extension direction relatively the tool, and a locking device shiftable between a locking position and a release position in order to lock the rip fence module in the locking position at a guided portion defined relatively the guide groove, and to permit in the release position a shifting of the guided portion in the guide groove.

Abstract: In a suction device for the intake by suction and/or extraction by suction of chips or dust, comprising a lower part (1) which is preferably provided with rollers (17), a collection container (2) which can be placed on said lower part and an upper part (3) which closes said collection container and has a motor-drivable fan (9) and a filter cartridge (7) which separates said fan from the interior of the collection container (2), an air inlet (4) which opens into the collection container (2) and is provided with a connector (6) and an air outlet (5) which is arranged downstream of the fan (9) being provided, a low transport volume can be achieved in a simple manner as a result of the fact that there is arranged between the lower part (1) and upper part (3) a support means which is configured in the manner of a telescope and with which there is associated a means (14) for receiving the upper end region of the collection container (2), the axial length of which is variable and the base of which can be secured to

Abstract: The invention relates to a tool-support apparatus for attachment to a grinding machine (1), in particular to a wet grinding machine, which has at least one grinding disc (3) arranged on a rotatably drivable grinding-disc shaft (2) and a machine frame or housing (4) in which the grinding-disc shaft (2) is supported. The tool-support apparatus has a tool-support (5, 6, 7), which can be secured on a machine frame or housing (4) of the grinding machine (1), for the support during the grinding process of a tool that is to be ground, and an arresting apparatus (8) for securing the tool support (5, 6, 7) on the machine frame or housing (4). The invention is distinguished in that the tool-support (5, 6, 7) can be secured on the machine frame or housing (4) in such a way that it can be swivelled about the grinding-disc shaft (2) or about a swivel axis (10) parallel to the grinding-disc shaft (2) and can be arrested by way of the arresting apparatus (8) in a plurality of angular positions.

Abstract: The invention relates to a rip fence module for a machine tool (1), in particular a panel sizing circular saw (1) in order to position workpieces with their edge facing away from a tool (2) on a machine table (3) at a certain distance to the tool (2), comprising: a superstructure (9) overlapping the machine table (3) at least in sections presenting a workpiece stop (9d) for the workpiece to be treated extending in a longitudinal direction (L), at least one guided portion (24, 16g) which is insertable and guidable in an allocated guide groove (14a) provided on the machine table side extending in an extension direction (A) transversely to the longitudinal direction (L), and by which the superstructure (9) is supported movably in the guide groove (14a) in the extension direction (A) relatively the tool (2), and a locking device (16) shiftable between a locking position and a release position in order to lock the rip fence module in the locking position at a guided portion (24, 16g) defined relatively the guide g

Abstract: The invention relates to a table widening module for a machine tool (1), especially a panel sizing circular saw (1), with an extension element (5) comprising for widening of a machine table (3) an extension plate (8), which can be positioned adjacent to the machine table (3) in an extension direction (A) and is especially flush on top with the machine table (3), as well as a number of extension arms (7a, 7b) fastenable to the extension plate (8) and received in a guided manner in the extension direction (A) in an allocated number of guide rails (6a, 6b; 206a, 6b; 306a, 6b) fastened on the table so that the distance of the extension plate (8) to the machine table (3) is variable.

Abstract: A circular saw having a machine frame having a table board and a swivel frame arranged underneath the table board, which is swiveled about a swivel axis coplanar with the top side of the table board. The swivel frame accommodates a height adjustable tool bracket carrying at least one cutting tool engaging an associated slot in the table board. The swivel frame in the region of its ends is swivel-suspended on bearing brackets which are mountable on the bottom side of the table board, and are swiveled by an articulated adjusting rod. The tool bracket is height adjusted by an adjusting element which is arranged in driving linkage with an extendable articulated shaft. The adjusting rod and the articulated shaft are operated by cranks mounted on the operating side of the machine frame.