Abstract: A method for forming a component includes forming a workpiece into a hollow preform cylinder concentric with an axis and including an inner surface that extends along the axis, placing within the preform cylinder a mandrel having an outer surface, flow-forming the inner surface and the outer surface of the preform cylinder such that the inner surface of the cylinder conforms to at least a portion of the outer surface of the mandrel, and cutting the flow formed cylinder transversely with respect to the axis into segments, each segment having an axial length.

Abstract: A production method for complex bearings includes: preparing an outer member and a cylindrical sintered bearing member. The outer member includes a fitting hole having: an almost circular cross section; an inner peripheral surface; and a surface roughness of the inner peripheral surface which is 3.2 to 100 ?m at a maximal height. The sintered bearing member includes: an outer diameter allowing clearance fit of the sintered bearing member into the fitting hole of the outer member. The production method further includes: inserting the sintered bearing member into the fitting hole of the outer member and inserting a columnar core rod into an inner peripheral surface of the sintered bearing member; and compressing the sintered bearing member in an axial direction.

Abstract: A continuously variable transmission has a number of tiltable ball-leg assemblies configured angularly about a longitudinal axis. Each ball-leg assembly is in contact with, and guided through a tilting motion by an axially translating shift cam having a convex shape. The convex shape of the shift cam can have a profile defined by a set of parametric equations. The profile of the shift cam can vary according to the location of the contact point between an idler and the ball-leg assembly as well as the amount of relative axial motion between the ball-leg assembly and the idler. The profile of the shift cam can be configured to control the axial translation of the idler relative to the change in tilt angle of the ball-leg assembly. A roll-slide factor can be used to characterize the axial translation of the idler relative to the tilt angle of the ball-leg assembly.

Abstract: A method of deriving a path of contact of a face gear with a pinion gear includes positioning the pinion gear, shifting the pinion gear from either towards or away from the face gear along a rotational axis, deriving a first relationship between a rotational angle of the pinion gear and a fluctuation error angle, deriving second and third relationship by shifting the first relationship in either way for 360 degree divided by the number of the gear teeth, deriving a first point which the first and second relationships share and a second point which the first and third relationships share, deriving a third point, at which the fluctuation error is the same as the first and second points, between the first and second points, and determining a curve line on tooth flanks of the gear teeth on the basis of the first, second, and third points.

Abstract: The gear housing may be a housing to enclose a gear assembly of a land mobile vehicle. The gear housing may have an upper housing portion and a lower housing portion. The lower housing portion may have a wall reference position below a lowest surface structure of a gear assembly wherein a wall of smooth, generally non-planar surfaces may be positioned below a gear assembly centerline with an interior surface at the wall reference position adjacent the lowest surface structure with sufficient separation to avoid contact between the gear housing and the gear assembly. The wall may have at least one concave curved segment to position the wall adjacent to a contour of outer surface structures of the gear assembly, but not contacting the gear assembly. An upper housing portion may be attached to the lower housing portion to enclose the gear assembly.

Abstract: A multi-plate clutch including a clutch hub having a cylindrical portion; a plurality of clutch plates splined to the outer periphery of the cylindrical portion of the clutch hub, and a plurality of spline teeth being formed on the outer periphery of the cylindrical portion of the clutch hub. A recessed portion is formed on the inner side of each spline tooth, and a weir portion is formed at one end of each recessed portion by depressing one portion of the spline tooth to the inner side on one end side of the cylindrical portion. Thus forming a depressed portion, and removing, with one portion of the depressed portion left behind, a portion of the cylindrical portion on the one end side of the one portion of the depressed portion.

Abstract: A ring spring for use in a roller bearing assembly includes one or more inner rings and an outer ring operatively connected to the inner rings. Axial compression of the inner rings displaces the outer ring radially to secure bearings in the roller bearing assembly.

Abstract: A composite ring gear (10) with a metallic gear insert (30) has at least one filament (34) wound about the gear insert and an eyelet (32) a plurality of times. The filament is adapted to withstand a portion of a tensile load transmitted between the insert and the eyelet. The insert, eyelet and filament are then embedded in a composite material.

Abstract: An epicyclic gear system (A) includes a sun gear (2), a ring gear (4) located around the sun gear (2) and planet pinions (6) located between the sun and ring gears (2,4). The planet pinions (6) rotate on a carrier (8) that includes flexpins (20) that are cantilevered from a wall (12) of the carrier (8) and sleeves (22) that are attached to the remote ends of the flexpins (20) and extend back over the flexpins (20) to create a double cantilever. Bearings (24) support the planet pinions (6) on the sleeves (22) so that the planet pinions (6) rotate about the flexpins (20). The double cantilever enables the flexpins (2) to flex such that the axes (Y) of the planet pinions (6) remain parallel to the common axis (X) of the sun and ring gears (2, 4). Each sleeve (22) h an integrated bearing race (44) and a bearing seat (42) that carries a separate bearing race (60).

Abstract: A method for manufacturing a rigid internal gear of a wave gear device in which an internally toothed portion formed with internal teeth and a gear main body portion are joined integrally, the method including preforming an internal teeth-forming ring or disc for forming the internally toothed portion by using a first aluminum alloy powder; manufacturing a forging in which the internal teeth-forming ring or disc is placed in a forging die and is integrally formed on its outer side with the gear main body portion using a second aluminum alloy powder, the first aluminum alloy powder being harder and having higher abrasion resistance than the second aluminum alloy powder; and applying post-processing including cutting teeth to the forging.

Abstract: A spindle drive has a spindle nut (1) and a threaded spindle (2) mounted in a rotationally fixed and axially displaceable manner on a reference body (3) by way of a linear guide, wherein the axis (9) of the threaded spindle (2) is arranged parallel to the longitudinal direction of the linear guide, and wherein the linear guide has a groove (4) and a guide element (5) engaging in the groove and comprises an elastic region (5b, 5b?, 5b?), the width of which perpendicular to the longitudinal direction of the linear guide is greater than the maximum groove width in the region used for the linear guide.

Abstract: In a method of operating a gearwheel machining tool having a machining wheel situated on a drive axis, for reworking a gearwheel, a fixed axial distance between both wheels is set. In this manner, the engagement of the gearwheel in the teeth of the machining wheel may be performed without damage in a technically simple way, which is achieved in that the gearwheel to be machined is placed on the arbor in an arbitrary rotational angle position, tooth areas of its lateral external faces facing toward the machining wheel coming to rest on lateral tooth areas of the machining wheel, upon which the machining wheel is set into rotation and the gearwheel to be machined slides axially on the arbor into its machining position. After which the tooth gaps of the two overlapping areas of the wheels are rotated one over the other and the wheels are mutually engaged.

Abstract: A method for fabricating a rotational-to-linear motion conversion mechanism which can avoid a planetary shaft from being tilted with respect to a sun shaft when the conversion mechanism is assembled. The method includes fabricating a subassembly with the planetary shaft being held in parallel to the sun shaft. The subassembly includes the sun shaft having a first and second sun gear at its opposing ends and a male thread at its center, the planetary shaft having a first planetary gear at its one end and a male thread at its center, a ring shaft having a female thread, and a first and second ring gear. The method also includes mating the second planetary gear with the second sun gear and the second ring gear while the second planetary gear is being fitted over the outer circumferential surface of the other end of the planetary shaft in the subassembly.

Abstract: In a fastening method of press-fitting and fixing an axial end section of a second-stage pinion (1) into a circular opening (21) of a first-stage planetary carrier (2), first press-fitting external teeth (13a), which have an addendum circle larger than an addendum circle of the other pinion part and has a sharp tooth top, are generated through manufacturing of tooth-cutting at an outer circumferential section of the axial end portion of the second-stage pinion (1). Then, a press-fit bore (22) that has a smaller diameter than the addendum circle of the press-fitting external teeth (13a), is formed at the circular opening (21) of the first-stage planetary carrier (2). The press-fitting external teeth (13a) are then press-fitted into the press-fit bore (22) so that tooth tops thereof cut into an inner circumference surface of the press-fit bore (22) to secure fastening strength between the second-stage pinion (1) and the first-stage planetary carrier (2).

Abstract: A forming method of a tooth trace of a gear according to the present invention includes: a first step of preparing a preformed gear made of metal including a cylindrical main body and a tooth part having a flat tooth flank having a uniform thickness in a tooth trace direction inside of the main body; and a second step of conducting a surface treatment locally to an outside surface of the main body in order to deform the outside surface of the main body in such a manner that the same becomes concave, so that a crowning bulging in the tooth trace direction is formed on the tooth flank of the tooth part.

Abstract: A divided toothed wheel is provided having two toothed wheel halves in tension in relation to each other, the wheel occupies only a minimum amount of space from the axial direction and the two halves are permanently connected together by a securing element designed as an elastically shapeable annular ring disk. The first toothed wheel half includes a hollow cylindrical collar, to which the second toothed wheel half is secured by the annular ring disk. The annular ring disk includes slots distributed over the periphery and extending radially outwards from a central opening forming spring tongues between the slots. The free ends of the spring tongues have edges that sit on the outer circumference of a component arranged in the central opening, in a form-fitting manner, as the spring tongues spring back after the annular ring disk has pressed against the second toothed wheel half.

Abstract: The inventions relate to mechanical engineering, in particular to screw-type gears with rolling elements. The technical result of the proposed device and method consists in reducing the mass and overall dimensions of a gear and increasing the operational reliability and service life thereof. The essence of the invention is that one of the gear parts, either a screw or a nut, is made of two coaxial sections with curved end faces, and that a part of a rolling path is formed on each of the curved end faces. The coaxial sections are disposed so that the curved end faces thereof are arranged opposite one another with a clearance and the rolling elements are encompassed by both parts of the rolling path. The clearance in the gear is selected by pressing one coaxial section against the other in the axial direction.

Abstract: The a divided toothed wheel having two toothed wheel halves which are tensioned in relation to each other is provided. The first toothed wheel half includes a hollow cylindrical collar with a groove, to which the second toothed wheel half is secured in a form-fitting engagement by a securing element inserted into the groove. The divided tooth wheel takes up a minimum amount of space from the axial direction and has two halves which are permanently connected together. The second toothed wheel half has a radially extending recess and the securing element is designed as an elastically shapeable ring which is arranged in a receiving chamber defined by the groove and the recess and the two toothed wheel halves are permanently joined together.

Abstract: A component with inner teeth (3) and outer teeth (6). The component (7) comprising a basic body (2) provided with the inner teeth (3) and a sheet component (5) provided with the outer teeth (6). The sheet component (5) is connected to the basic body (2), during the manufacturing process, by positive interlock in both the tangential and radial directions.

Abstract: A composite gear and method of making same. In one embodiment the gear includes a body portion having a plurality of teeth. The gear is formed by placing it in a suitable tool such that a compressive stress is exerted on the teeth adjacent the root portion of each tooth. A portion of the gear adjacent the teeth is wrapped with a resin fibrous material that is allowed to cure while the compressive stress is maintained on the gear. When the resin fibrous material has at least substantially cured and the gear is removed from the tool, a permanent compressive stress is formed at the root portion adjacent each tooth. The compressive stress counteracts the tension stress that is experienced at the root portions of the teeth when the gear is in use, thus significantly strengthening (i.e., toughening) the gear and increasing its fatigue life.

Abstract: An apparatus and method for increasing the operating life of a rotating gear element including a plurality of outwardly-projecting gear teeth each having an involute profile, with each gear tooth having a pair of flanks and a pair of generally semi-circular root portions. A ring tool having a plurality of hardened, inwardly-projecting burnishing teeth is employed to plastically deform only the root portions of the gear element being formed, while avoiding contact with the flanks as the gear element is passed through the ring tool. The ring tool also includes a plurality of broaching surfaces or cutting edges for removing excess stock material from the surfaces of the root portions. The ring tool increases the compressive residual stresses in the root portion of the gear element being formed, thereby creating an optimal residual stress profile and greater bending strength within the root portion of the gear element.

Abstract: A method of manufacturing a powertrain member capable of suppressing an effect of heat distortion is provided. A method of manufacturing a powertrain member including a disk portion provided to extend from a boss portion in a direction perpendicular to a rotation axis and having a through hole formed in the disk portion includes the first through hole formation step of forming a tip hole which is at least a portion of the through hole, the chamfering step of chamfering at least a portion of the tip hole, the heat treatment step of performing heat treatment after chamfering, and the second through hole formation step of forming a desired shape of the through hole by laser processing after heat treatment.

Abstract: A gear and a method of making a forged powder metal gear having a plurality of teeth and a variable case depth profile forged in the plurality of teeth. Each tooth of the plurality of teeth has a first surface and a tooth root. A variable case depth profile is formed in each tooth of the plurality of teeth, whereby the variable case depth profile exhibits greater tooth wear resistance on the first surface and greater impact resistance in the tooth root.

Abstract: A one-way drive device is disclosed herein and includes a pocket plate assembly having a disc-shaped pocket plate and a notch plate assembly having a disc-shaped notch plate. The device also includes an axially extending, open-ended cylindrical shell for containing therein the pocket and notch assemblies. This shell includes opposite first and second axial ends and opposing inner and outer circumferential surfaces which extend axially between the end and which together are configured to include splines and first and second sets of tabs. The splines are circumferentially spaced from one another and extend axially across the shell body and they project radially inward and outward such that there innermost surface edges of the splines together define an innermost annular bearing surface.

Abstract: The aim of the invention is to further develop a bevel friction ring gearing. The invention thus relates to a bevel friction ring gearing in which the friction ring can be displaced by means of an adjusting device that comprises a guide on which an adjusting bridge for the friction ring is arranged in a free axially displaceable manner. The adjusting device comprises a worm-gear drive that engages with the guide.

Abstract: In optimum number of teeth setting method for a helical gear pair and the helical gear pair manufactured on the basis of the set optimum number of teeth of each helical gear of the helical gear pair, a sound pressure level of a gear sound is compared with the sound pressure level of an audible limit with respect to a meshing frequency of the helical gear pair at a predetermined vehicle speed of an automotive vehicle in which the helical gear pair is mounted to select a frequency region in which the calculated sound pressure of the gear sound is relatively low to the sound pressure level of the audible limit, and number of teeth of each helical gear of the helical gear pair corresponding to the selected frequency region is set to an optimum number of teeth of each helical gear of the helical gear pair.

Abstract: Projections of a bevel gear or a vibrating body are formed by bending a metal-made plate member having a plurality of projections so as to direct them in the same direction and make their projecting direction include a component of out-of-plane direction and subsequently applying a load to the bent plate member to crush the projections so as to reduce the height thereof and increase the plate thickness.

Abstract: A method for manufacturing a gear having a plurality of gear teeth includes the steps of: determining a desired finished gear characteristic, determining a reference feature on the gear to establish an origin on the gear, determining an unfinished dimension of a surface of at least one of the plurality of gear teeth relative to the origin, estimating a desired stock removal that will achieve the desired finished gear characteristic, finishing the gear using a finishing tool, determining a finished dimension of the surface of the at least one of the plurality of gear teeth relative to the origin, determining actual stock removal by comparing the unfinished dimension with the finished dimension, and comparing the actual stock removal with the desired stock removal.

Abstract: A gear wheel includes multiple helical toothings, each having a different helical angle. A pressing method for molding a gear wheel involves introducing a compactable material into a chamber of a pressing tool, compacting the material, exposing the helical toothings of the gear wheel, and removing the molded body from the pressing tool. A pressing tool for pressing, as one part, a gear wheel, includes a matrix, cylindrical first and second molding tool parts which can be translated along and then rotated about a longitudinal axis, and a driver coupled to the molding tool parts or driving them. The molding tool parts can be moved towards and away from each other and the inner surface of the matrix delimits the chamber and is shaped to allow a linear axial sliding movement of the compactable material relative to the matrix.

Abstract: In a gearwheel mechanism for driving a secondary unit such as a fuel pump driven via the gear wheel mechanism by a primary unit, a driven gear mounted on the secondary unit is provided with a positioning element including sections covering teeth areas of the driven gear so that those sections cannot be engaged with a driving gear of the primary unit during mounting of the secondary unit, and in a pump having a gear provided with such a positioning element as wells as an internal combustion engine including a pump with a gear provided with a positioning element.

Abstract: The present invention provides a method for manufacturing a rigid internal gear for a wave gear device comprising an internally toothed portion and a gear main body portion comprised of different materials. In this method, a gear main body ring for forming a gear main body portion is preformed using a first aluminum alloy powder; an internal teeth-forming ring is preformed using a second aluminum alloy powder that has lower processability, is less durable, has higher abrasion resistance, and is harder than the first aluminum alloy powder; the internal teeth-forming ring is fitted inside the gear main body ring and the assembly is integrated by powder forging; and the resulting ring-shaped forging is subjected to post-processing, including cutting teeth. The gear main body portion and internally toothed portion are securely integrated by powder forging, and a lightweight rigid internal gear with high durability can therefore be obtained.

Abstract: A power transmission device that can have deformation in processing suppressed. A spiral gear as a rotation member includes a disk section extending radially outwards from a boss section. The disk section includes a through hole in slit form through laser processing.

Abstract: The invention relates to a method for the production of a drop-forged balancing shaft for a mass balancing gear of an internal combustion engine. The balancing shaft has an unbalanced plane formed by the rotational axis thereof and an eccentric mass center of gravity, and at least one bearing journal, the outer lateral surface of which serves as a track for a rolling bearing supporting the balancing shaft in the internal combustion engine. To this end, the balancing shaft is to be forged in a forging die having a parting plane extending in the direction of the rotational axis and rotated in relation to the unbalanced plane.

Abstract: A method for making a differential housing having a ring gear integrally formed therein includes the steps of providing a differential housing having an annular rim integrally preformed therein; supporting the differential housing between upper and lower halves of a rotatable holding tool such that the annular rim extends radially outwardly from the holding tool for movement therewith; providing a thickening tool having a tool surface engagable with the annular rim during rotation of the holding tool to form a thickened lip; and providing a gear forming tool engagable with the thickened lip during rotation of the holding tool, whereby a plurality of teeth are formed along the lip to form the ring gear.

Abstract: In a process for the aligning of the tooth spaces of a workpiece with precut teeth, which is set up on the work spindle of a gear finishing machine, the workpiece (1) is brought into no-backlash double flank mesh with a pilot gear (6). The workpiece (1) is rotated, and during this rotation both the angular position of the tooth space centre lines of the pilot gear (6) and the centre distance between the pilot gear (6) and the workpiece (1) are measured. This allows the workpiece (1) to be tested with respect to radial run-out, flank material allowance, helix angle, and any possible irregularities.

Abstract: In a method of manufacturing multiple transmission units with individually selectable gear ratios that vary from unit to unit, a gear pair having a desired transmission ratio is selected from a multiplicity of interchangeable gear pairs that includes both spiroplan gears and conventional crown gear and pinion combinations. The selected gear pair is then installed into a housing having first and second bearing sections configured to support bearings in which the shafts of the selected gear pair are rotatably mounted. The bearing sections are configured such that, for every gear pair that may be selected from among the multiplicity of gear pairs, the bearing sections support the first and second shafts in such a position and orientation that teeth of the gears engage with each other and a longitudinal axis of one of the gears of the gear pair is offset by a fixed distance from a longitudinal axis of the other.

Abstract: An internal gear and cap assembly includes a gear having a base that extends about an axis between a first and second end. The first end defines a groove that extends to a floor and the groove surrounds the axis. Teeth extend from the base. A lip extends from the first end and also surrounds the axis. A cap has a flange that is inserted into the groove. The lip is deformed toward the groove such that material from the lip flows to trap the flange between the lip and the floor of the groove to retain the cap to the gear in the axial direction. Slots may be defined in the flange such that the material from the lip flows into the slots to provide a key-lock between the cap and the gear to prevent rotation of the cap relative to the gear about the axis.

Abstract: A transmission shift mechanism for use with a vehicle transmission. The transmission shift mechanism includes a user-operated selector and a sub-assembly operably disposed between said user-operated selector and the vehicle transmission. The sub-assembly includes a torque-transfer member having a first portion and a second portion wherein the first portion is pivotally secured to the transmission shift mechanism about a pivot axis and the second portion defines a section of a substantially spherical surface which is engageably disposed within a non-linear camming slot defined by the transmission shift section. The torque-transfer member takes the form of a molded polymeric body with a sheet metal insert disposed within the molded polymeric body. The second portion of the torque-transfer member may include flats to reduce the volume of polymeric material required in the manufacture of the member. A method of manufacturing such a torque-transfer member or crank arm is also disclosed.

Abstract: An angle head for use with a power tool includes an angle housing defining first and second non-parallel axes and a pinion shaft supported within the angle housing for rotation about the first axis. The pinion shaft has a first end that includes a plurality of pinion teeth, and a second end adapted to be engaged by a motor of a power tool. The angle head also includes a bevel gear supported in the angle housing for rotation about the second axis. The bevel gear includes an upper shaft, a toothed portion, and an output spindle. The upper shaft, toothed portion, and output spindle are integrally formed as a single, monolithic structure. The toothed portion is between the upper shaft and output spindle. The toothed portion includes a plurality of bevel teeth in meshing engagement with the pinion teeth such that rotation of the pinion shaft about the first axis causes rotation of the bevel gear about the second axis.

Abstract: In making a component part of a reclining device that is used to adjust an inclination of a seat back with respect to a seat cushion, after the component part has been prepared, a predetermined portion of the component part is selectively heated up to a temperature greater than a transformation point of a material of the component part, and the component part is then cooled. During this heat treatment, portions of the component part other than the predetermined portion are left as a base material to thereby selectively increase the strength or the wear and abrasion resistance of the component part.

Abstract: A power transmission device that can have deformation in processing suppressed. A spiral gear as a rotation member includes a disk section extending radially outwards from a boss section. The disk section includes a through hole in slit form through laser processing.

Abstract: A method of polishing a first component by a second component of a tribological pair is disclosed. The method includes mating the first component to the second component in a tribological configuration. The first component and the second component are moved such that a first surface of the first component and a second surface of the second component contact and slide against each other, so that the second component polishes the first component. The method further includes discontinuing moving of the first component and the second component when the first surface obtains a desired surface finish.

Abstract: A planet carrier (2) for a gearbox, especially an automatic or power shift gearbox, is provided, including at least one planet gear (4) which is connected to a sun gear and a rotor wheel. The planet carrier is embodied in two parts and is made in two bodies (11, 12) which are formed with a step-like shape and which are arranged one within the other. The internal diameter of the axially extending segments of the external body (11) is adapted to the external diameters of the internal body (12). The bodies are positioned in a precise manner in relation to each other during construction. The individual components can be produced in a simple manner by shaping the sheet steel in a non-cutting manner.

Abstract: A high strength gear used as an element of a power transmission mechanism. The gear includes a base gear formed of an iron-based alloy subjected to carburizing or carbonitriding treatment. The base gear has an engaging surface with which an opposite gear is engaged. The engaging surface of the base gear is coated with a first diamond-like carbon film which has a hydrogen content of not more than 10 atomic % and a surface hardness ranging from 8 to 30 GPa in a nano-indentation test. Additionally, at least a part of the first diamond-like carbon film is coated with a second diamond-like carbon film which has a hydrogen content of not more than 10 atomic % and a surface hardness ranging from 50 to 90 GPa in the nano-indentation test. The second diamond-like carbon film has a surface roughness Ra ranging from 0.1 to 0.2 ?m.

Abstract: A production method for complex bearings includes: preparing an outer member and a cylindrical sintered bearing member. The outer member includes a fitting hole having: an almost circular cross section; an inner peripheral surface; and a surface roughness of the inner peripheral surface which is 3.2 to 100 ?m at a maximal height. The sintered bearing member includes: an outer diameter allowing clearance fit of the sintered bearing member into the fitting hole of the outer member. The production method further includes: inserting the sintered bearing member into the fitting hole of the outer member and inserting a columnar core rod into an inner peripheral surface of the sintered bearing member; and compressing the sintered bearing member in an axial direction.

Abstract: A gear member for an automatically shiftable vehicular transmission is provided having a gear body with a generally cylindrical outer surface having a plurality of radially outwardly extending gear teeth formed thereon. An inner surface is generally coaxially disposed with respect to the generally cylindrical outer surface and extends for at least a portion of the gear body. Additionally, a plurality of radially inwardly extending splines is formed on at least a portion of the inner surface. At least one of the plurality of radially outwardly extending gear teeth and the plurality of radially inwardly extending splines are cold extruded. A method of forming the gear member is also provided including forming a generally tubular blank by reverse extrusion of a generally cylindrical slug. Subsequently, a plurality gear teeth are formed on at least a portion of the generally tubular blank by cold extrusion to form the gear member.

Abstract: The drivetrain with multiple differentials includes a common side gear. The side gear has a cylindrical body with a central bore. Receiving members are on the bore to receive a shaft. An annular member is on the body with the bore extending through the annular member. A plurality of teeth is formed on an external surface of the annular member. A plurality of steps is formed in the wall defining the central bore. The steps extend towards the body from the annular member. A retaining mechanism, to retain the side gears on the shaft, is positioned in one of the plurality of the steps.

Abstract: An idler shaft assembly for an internal combustion engine provides significant cost savings eliminates processing and assembly steps, and provides accurate orientation of components. The idler shaft assembly includes a shaft adapted for rotation about a first axis. A one-piece sprocket and gear assembly is received on the shaft. A sprocket portion of the one-piece assembly has a first diameter that cooperates with an associated drive chain that is driven by the crankshaft, and a gear portion of the one-piece assembly has a second diameter that cooperates with an associated gear of an associated balance shaft.

Abstract: A relatively economical process allows producing sintered shaped parts, such as sliding sleeves in motor vehicle transmissions. Open-pored undercut surfaces are formed at an internal toothing by hypocycloid milling of the part prior to its final hardening.

Abstract: A method is provided for manufacturing a compound helically toothed planet gear for a planetary gear set wherein the individual gear elements of the compound planet gear have different leads. The method identifies and utilizes the several factors affecting gear timing for compound helical planet gears having different leads to provide planet gears capable of attaining equal load share among the several gears of the planetary gear set. Specifically, the method of the present invention utilizes a mounting shoulder and bore axis to provide common locating features for use throughout the manufacturing process The method further provides for bore honing and removal of equal amounts of material from both sides of each gear tooth in the gear finishing process so as not to alter gear timing between the compound gear elements.