Provided is an alignment tool for a cutting arrangement including a cutting apparatus with a cutting edge for treatment of a workpiece, especially a rotor blade of a wind turbine, in which the alignment tool includes at least one fixation means for fixing the alignment tool to the workpiece and at least one guiding structure to guide the cutting edge of the cutting tool.

A method for treatment using a cutting arrangement includes providing a rotor blade of a wind turbine and attaching an alignment tool to the rotor blade. The alignment tool includes at least one fixation means for fixing the alignment tool to proximate a trailing edge of the rotor blade that is a structure attachable to a first surface and a second opposing surface of the rotor blade. The alignment tool further includes at least one guiding structure operably connected to the fixation means that is configured to embrace the leading edge of the rotor blade and includes at least one groove or at least one edge that provides guidance for a cutting edge of a cutting apparatus. The method includes treating the rotor blade using the cutting apparatus, in which the cutting edge of the cutting apparatus is guided by the at least one guiding structure of the alignment tool.

A system for making curved cuts of a work piece, the system including a template including a profiled groove spanning from a first end to a second end, the groove dividing the template into distal and proximal halves, at least one profile of a curved cut is part of the groove; a saw including a saw blade; a turntable including a platform and a base upon which the platform is rotatably supported; and a mobility mechanism to which the platform is attached, the mobility mechanism is configured to allow the turntable to traverse between the two ends and a direction transverse to a direction defined by the two ends, wherein the work piece is disposed under the groove of the template and the saw blade is configured to be guided through the groove to cut the work piece according to the at least one profile of a curved cut.

A reciprocating saw includes a frame, a motor, a belt pulley, a reciprocating block, a guide pillar, a driving belt, two guide blocks, two sliding blocks, two clamps, a saw blade, a base, a mounting rack, a driving wheel, a connecting rod, a fixed rod, and a plurality of pulleys. The frame includes a first side, a second side opposite to the first side, and a third side connecting the first side and the second side. The mounting rack is disposed between the first side and the second side. The motor and the belt pulley are disposed on the mounting rack. The motor includes a motor shaft and the driving wheel is disposed on the motor shaft. The belt pulley is connected to the driving wheel through a belt. The connecting rod includes a first end hinged to the belt pulley and a second end hinged to the reciprocating block.

A system for making curved cuts of a work piece, the system including a template including a profiled groove spanning from a first end to a second end, the groove dividing the template into distal and proximal halves, at least one profile of a curved cut is part of the groove; a saw including a saw blade; a turntable including a platform and a base upon which the platform is rotatably supported; and a mobility means to which the platform is attached, the mobility means is configured to allow the turntable to traverse between the two ends and a direction transverse to a direction defined by the two ends, wherein the work piece is disposed under the groove of the template and the saw blade is configured to be guided through the groove to cut the work piece according to the at least one profile of a curved cut.

An accessory includes a blade, a coupling, and a guide. The blade includes a cutting edge. The coupling includes a first portion and a second portion. The first portion is attachable to and detachable from the power tool. The second portion is connected to the blade. The guide is structured to guide the blade along a work piece by interacting with a surface of the work piece as the blade moves in an advancing direction. The guide is structured to provide a locked state and an unlocked state. In the locked state, the guide is engaged with the coupling such that the guide is attached to the coupling. In the unlocked state, the guide is disengaged from the coupling such that the guide is detached from the coupling.

Provided is an alignment tool for a cutting arrangement including a cutting apparatus with a cutting edge for treatment of a workpiece, especially a rotor blade of a wind turbine, in which the alignment tool includes at least one fixation means for fixing the alignment tool to the workpiece and at least one guiding structure to guide the cutting edge of the cutting tool.

The Handheld Dovetail Joint Template and Saw Guide is a handheld jig device utilized to mark and/or cut pin and tail cuts forming a dovetail joint. The jig device includes a base with two angled, planar surfaces-a pin surface and a tail surface-opposite each other. A user holds the pin surface along the top edge of the pin board and marks and/or cuts the lengths of the pin portion of the dovetail joint. Next, the user places the tail surface of the base along the top edge of the tail board, aligns a retractable arm against the length of a pin cut, and marks the tail board along the angled, planar surface of the tail surface. Once all pin and tail cuts are formed in this manner, the pin and tail boards are fitted together.

Machining guides and methods relating thereto are described. One example of the machining guide, according to the present arrangement, includes: (i) two or more frames, each of which includes(a) a first guide member including first multiple plates; (b) a second guide member including second multiple plates; and (c) a pivoting connection pivotably connecting the first guide member and the second guide member, and wherein, during an operative state of the machining guide, one or both of the first and the second guide members of two or more of the frames pivot about the pivoting connection to allow two or more of the frames to be disposed around the workpiece; and (ii) one or more spacer plates being disposed between each of the frames and define a kerf between each of the frames such that, during the operative state of the machining guide, a tool through the kerf is capable of machining the workpiece.

A method for treatment using a cutting arrangement includes providing a rotor blade of a wind turbine and attaching an alignment tool to the rotor blade. The alignment tool includes at least one fixation means for fixing the alignment tool to proximate a trailing edge of the rotor blade that is a structure attachable to a first surface and a second opposing surface of the rotor blade. The alignment tool further includes at least one guiding structure operably connected to the fixation means that is configured to embrace the leading edge of the rotor blade and includes at least one groove or at least one edge that provides guidance for a cutting edge of a cutting apparatus. The method includes treating the rotor blade using the cutting apparatus, in which the cutting edge of the cutting apparatus is guided by the at least one guiding structure of the alignment tool.