An adjustable positioning structure for a feeding support plate of a circular sawing machine contains a magnetic element, a micro pneumatic cylinder, and a control button. The magnetic element is accommodated in a magnetic slider which is fitted with a guide column on a material feeding side of a table of the circular sawing machine and is configured to produce a change of a magnet value of the magnetic slider when the magnetic slider moves along the guide column reciprocately, such that a displacement value of the magnetic slider is calculated and is displayed by a display on the magnetic slider. The micro pneumatic cylinder is mounted on the magnetic slider and is configured to fix or release the magnetic slider relative to the guide column. The control button is arranged on the feeding support plate and is configured to control the micro pneumatic cylinder to operate.

Power tools such as cutting saws with rotary powered blades are described. Also described are various accessories for tools used with cylindrical workpieces such as pipes are described. The accessories include a clamp and saw joint assembly, various quick connection assemblies between a saw and a clamping system, a plunge guide assembly, a latch plate assembly, an interlock switch, a blade guard system, and a chip management system or chip deflector. Also described are related methods of use.

The present invention relates to improvements in a magnetic featherboard, the featherboard having an elongate main body with opposite lateral faces, a bottom face and front and rear faces; a plurality of resiliently deformable feathers arranged at one or both lateral faces of the main body, and at least two, on-off switchable permanent magnets respectively received in one of at least two spaced apart recesses of the main body such that a working face of the respective switchable permanent magnet is present at the bottom face of the main body. One improvement comprises (i) providing a resiliently deformable friction gasket adjacent the working face of each of the switchable permanent magnets and protruding, in an non-deformed state, a predetermined amount from the bottom face of the main body and the working faces, the gaskets deformable through magnetic clamping of the featherboard to a table. The other improvement resides in providing at least two adjustable stops at one or both of the front and the rear face of the main body, each said stop comprising an abutment piece displaceable in longitudinal direction relative to the front/rear face, wherein a distance of each of the abutment pieces from the front/rear face is settable independently of each other, the stops operational to provide at least two abutments against which stock material to be machined can be placed when the featherboard is magnetically secured to the table.

An adjustable positioning structure for a feeding support plate of a circular sawing machine contains a magnetic element, a micro pneumatic cylinder, and a control button. The magnetic element is accommodated in a magnetic slider which is fitted with a guide column on a material feeding side of a table of the circular sawing machine and is configured to produce a change of a magnet value of the magnetic slider when the magnetic slider moves along the guide column reciprocately, such that a displacement value of the magnetic slider is calculated and is displayed by a display on the magnetic slider. The micro pneumatic cylinder is mounted on the magnetic slider and is configured to fix or release the magnetic slider relative to the guide column. The control button is arranged on the feeding support plate and is configured to control the micro pneumatic cylinder to operate.

A miter gauge for guiding a work piece over a work platform has a base assembly that slides over the work platform and a fence that engages the work piece on the work platform. The fence is movable relative to the base assembly and includes a first locating member. A second locating member is operatively connected to the base assembly and selectively engages the first locating member of the fence. The second locating member moves between a locked position where the second locating member is engaged with the first locating member to inhibit movement of the fence and hold the fence at a preset position and an unlocked position where the second locating member disengages the first locating member so that the fence and base assembly are free to move relative to one another.

A miter gauge for guiding a work piece over a work platform has a base assembly that slides over the work platform and a fence that engages the work piece on the work platform. The fence is movable relative to the base assembly and includes a first locating member. A second locating member is operatively connected to the base assembly and selectively engages the first locating member of the fence. The second locating member moves between a locked position where the second locating member is engaged with the first locating member to inhibit movement of the fence and hold the fence at a preset position and an unlocked position where the second locating member disengages the first locating member so that the fence and base assembly are free to move relative to one another.

A stop for a tool that engages a work piece on a work platform includes a mounting assembly that can be movably mounted on the tool so that the mounting assembly is selectively positionable on the tool. A first member is operatively connected to the mounting assembly and projects outwardly from the mounting assembly. A second member projects from the first member to engage and locate the work piece with respect to the tool. The second member is mounted on the first member for movement along a length of the first member and is selectively fixed to the first member to adjust a distance between the second member and the mounting assembly.

An anti-kickback device is disclosed where the device includes a plurality of flexible members, and at least a compliant contact surface in contact with a moving workpiece, where the flexible members provide a biasing force against the workpiece and also resist or prevent kickback of the workpiece as it engages a tool such as a shaper, saw blade, etc. The configuration of the flexible members assures an opposing force to resist kickback.

A guide assembly for use with a tool to guide movement of the tool along a channel defined by a work platform. The guide assembly comprises an elongate bar slidably received in the channel. The elongate bar has a width that is less than a width of the channel. The elongate bar defines recesses extending from a first side of the elongate bar toward a second side of the elongate bar. Guides are moveably mounted in one of the recesses of the elongate bar to adjust a working width of the guide assembly to fit the width of the channel. Each guide projects from its recess and has a portion thereof disposed outward of the first side of the elongate bar. The working width of the guide assembly extends between the second side of the elongate bar and the portion of the guide disposed outward of the first side of the elongate bar.

A sled assembly configured to push stock along a fence includes a carriage and rollers mounted at spaced apart positions. The rollers engage the fence to guide movement of the carriage therealong and each has a peripheral portion for being received in a fence race. An adjustable roller mount selectively adjusts the position of the roller to align the peripheral portions of the rollers with the width of the race. An adjustable fence assembly includes an outfeed fence movable relative to an infeed fence. An outfeed fence adjustment mechanism includes mounting posts at spaced apart locations along the length of the outfeed fence movable to drive movement of the outfeed fence along an axis transverse to the feed direction.