A bearing including a bearing ring having an annular base and a plurality of gear teeth integrally formed with the annular base. Each gear tooth of the plurality of gear teeth includes a first flank surface extending substantially radially from the annular base, a top land surface extending substantially in the axial direction, and a chamfered surface between the top land surface and first flank surface. The chamfered surface includes a first arc with a first radius in a range of 0.1 to 0.15 times the gear module of the bearing ring. The first arc has a point of tangency with the first flank surface. The chamfered surface has length P extending in the radial direction between the point of tangency and the top land surface, and P is in the range of 0.1 to 0.15 times the gear module of the bearing ring.

A plastic helical gear has a three-dimensional tooth surface modification section on a tooth surface of each of involute-shaped teeth. The three-dimensional tooth surface modification section is a combined surface of a tooth top modification surface and an arc crowning surface. The tooth top modification surface is reduced in tooth thickness from a position between a tooth top and a tooth root toward the tooth top. The arc crowning surface is reduced in tooth thickness from a position between one end in the tooth width direction and the other end in the tooth width direction toward both ends in the tooth width direction. A line extending from an intersection point P0 between the starting position of the tooth top modification surface and the apex position of the arc crowning surface to the tooth root is aligned with a line on the tooth surface of the involute-shaped tooth.

A table saw includes a table assembly having a top surface, a cutting assembly, and an adjustment assembly. The cutting assembly is arranged below the table assembly and is movable relative to the top surface. The adjustment assembly includes an input member connected to a first gear and an output member connected to a second gear and to the cutting assembly. The first and second gears include first and second gear bodies and first and second pluralities of pins projecting from the gear bodies. Rotation of the input member causes rotation of the first gear about a first axis, and rotation of the second gear about a second axis causes rotation of the output member which causes the cutting assembly to move. The second pins engage the first pins in such a way that rotation of the first gear causes rotation of the second gear.

A multi-piece gearwheel comprising an inner core section and an external toothed ring with external teething is presented. The core section has intermeshing teeth extending radially outwards, which have an undercut in cross-section in the radial direction. The toothed ring has recesses that originate from an inner side of the tooth ring and extend radially outwards, wherein the recesses are at least partially complementary to the intermeshing teeth, and wherein the intermeshing teeth are received in the recesses. Furthermore, a gearbox for an electromechanically-assisted steering system is described.

The present embodiments provide a reducer of an electric power steering device, comprising a boss having a coupling hole formed in a central portion to allow a steering shaft to be coupled thereto and a gear portion on an outer circumferential side of the boss and having a tooth recess portion engaged with a worm on an outer circumferential surface thereof, wherein the tooth recess portion has a first end and a second end in an axial direction of the gear portion, the first end being axially opened, and the second end being closed, and a method for manufacturing the same.

A table saw includes a table assembly having a top surface, a cutting assembly, and an adjustment assembly. The cutting assembly is arranged below the table assembly and is movable relative to the top surface. The adjustment assembly includes an input member connected to a first gear and an output member connected to a second gear and to the cutting assembly. The first and second gears include first and second gear bodies and first and second pluralities of pins projecting from the gear bodies. Rotation of the input member causes rotation of the first gear about a first axis, and rotation of the second gear about a second axis causes rotation of the output member which causes the cutting assembly to move. The second pins engage the first pins in such a way that rotation of the first gear causes rotation of the second gear.

A bevel gear set and a method of manufacturing the same are provided. The bevel gear set may include a first bevel gear and a second bevel gear. The first and second bevel gears may be spiral bevel gears or hypoid spiral bevel gears. The first and second bevel gears may each have a gear tooth surface having a plurality of teeth formed thereon, such that the teeth of the first bevel gear and the teeth of the second bevel gear are configured to engage in a meshing engagement. The teeth are machined onto the respective gear tooth surface via a face milling process. Each tooth includes a tooth top, a plurality of meshing surfaces, and at least one chamfer. The chamfer may be formed at an abutment edge disposed between the tooth top and a respective meshing surface via a brushing process directly following the machining of the teeth.

A method of manufacturing a gear is provided. The method includes forming a plurality of gear teeth in a surface of a gear, the gear teeth having tooth faces defining tooth edges including tooth edge flanks and tooth edge top land and generating a convex contour at an edge break of at least one of the tooth edge flanks and tooth edge top land.

The present invention provides an inner meshing transmission mechanism, which comprises an outer wheel, the outer wheel being provided with a first number of circular arc teeth on its inner edge, and said first number of circular arc teeth being arranged around the inner edge of the outer wheel; an inner wheel, the inner wheel being provided with a second number of teeth on its outer rim, said second number of teeth being arranged around the outer rim of the inner wheel, wherein m>n; an eccentric rotation device configured to enable said inner wheel to be eccentrically placed inside of outer wheel; wherein one of said outer wheel, said inner wheel and said eccentric rotation device is connected to an input power, while another one of them being connected to an output device so that power is transmitted through engagement between said outer wheel and said inner wheel; and wherein the toothed profile of said inner wheel is designed such that at any time when said inner wheel is engaging with said outer wheel for transmission, only a portion of said second number of teeth engage with said first number of circular arc teeth, while the rest of said second number of teeth are separate from said first number of arc teeth.

A plastic helical gear has a three-dimensional tooth surface modification section on a tooth surface of each of involute-shaped teeth. The three-dimensional tooth surface modification section is a combined surface of a tooth top modification surface and an arc crowning surface. The tooth top modification surface is gradually reduced in tooth thickness from a position between a tooth top and a tooth root toward the tooth top. The arc crowning surface is gradually reduced in tooth thickness from a position between one end in the tooth width direction and the other end in the tooth width direction toward both ends in the tooth width direction. A line extending from an intersection point P0 between the starting position of the tooth top modification surface and the apex position of the arc crowning surface to the tooth root is aligned with a line on the tooth surface of the involute-shaped tooth.