Abstract: A rotating cutting tool to cut asymmetrical teeth in a gearwheel in which each tooth (21) has an active flank (A) with a convex profile meshing with the profile of a tooth of an opposing gearwheel meshing with the gearwheel and a secondary concave flank (S), provided with teeth (11) on a generally helical path which extends from one side to the other with respect to a median cross-section (M-M) of the tool which is intended to be intersected by the radius Rp of the gearwheel which is at right angles to the axis of rotation of the tool working on the gearwheel to cut its teeth. The helical teeth have a first flank (CA) which is intended to cut the said active flank (A) of the gearwheel teeth and a second flank (CS) intended to cut the secondary flank (S), the pitch (P1) between the first flank (CA) of the helical teeth being constant and the pitch (P2) of the second flank of the teeth being smaller than the pitch (P1).

Abstract: A method of determining the minimum radius and the mounting distance of a worm gear member (6) of a worm drive (2). The root portion (26) of a tooth slot (24) is probed at a plurality of points along the length of the root and the locations of the points are utilized as the basis for determining the minimum radius and the mounting distance.

Abstract: A cutting tool includes a shaft portion and a plurality of edge region groups. The ridgeline between the first rake face portion and the first flank face portion constitutes a first cutting edge portion. The ridgeline between the second rake face portion and the second flank face portion constitutes a second cutting edge portion. As seen from the direction perpendicular to a plane tangent to the outer peripheral surface, in a state where the central axis overlaps a first end on the front end side of the first cutting edge portion, the inclination angle of the first cutting edge portion relative to the central axis is larger than the inclination angle of a straight line relative to the central axis, the straight line connecting the first end to a second end on the front end side of the second cutting edge portion.

Abstract: The present disclosure relates to a gear set, especially for a rotary-wing aircraft, with two intermeshing gear wheels, each mounted on a respective shaft. In particular, in a normal section, the gear wheels of the gear set have different pressure angles on a drive side from the pressure angles on a freewheel side at the beginning of an engagement.

Abstract: An internal gear pump for a hydraulic vehicle brake system includes a pump shaft, a pinion, a ring gear, a first axial plate, and a second axial plate. The pinion is disposed on the pump shaft, is configured to rotate conjointly therewith, and is arranged eccentrically within the ring gear so as to mesh therewith. The first and second axial plates are adjacent to the pinion and the ring gear. A toothing on at least one of the ring gear and the pinion is configured such that an axial width of a root of a respective tooth is greater than an axial width of a crest of the respective tooth. A corresponding method relates to producing such an internal gear pump.

Abstract: Milling tool formed for hobbing of workpieces having cogs has a cylindrical tool body defining a rotation axis and a plurality of disc-shaped segments. Each segment includes a hub part having two opposite plane-parallel end surfaces extending perpendicular to the rotation axis, and a peripheral cam having a plurality of tangentially spaced-apart milling inserts. Bordering segments are detachably interconnected by male and female members co-operating in pairs and situated with the rotation axis extending through the members, each of which include a contact surface converging from a big end toward a small end and, in a cross-section across the rotation axis, form an out-of-round curve. Contact surfaces are dimensioned so that, when members are brought together, they direct their two bordering segments toward an end position centered and mutually angularly determined by the out-of-round cross-section curve and where plane-parallel end surfaces abut against each other. An individual segment is disclosed.

Abstract: A method for processing a gear includes a first cutting process starting the cutting of a work by moving a cutter in a first cutting direction while maintaining a cutting depth of the work at a setting value and reducing the cutting depth of the work before a first cutter portion reaches an end portion of a cutting area in the first cutting direction and a second cutting process synchronously rotating the work and the cutter in a reverse direction of rotational directions of the work and the cutter in the first cutting process, maintaining the cutting depth of the work at the setting value, and cutting the end portion of the cutting area by moving the cutter in a second cutting direction.

Abstract: Milling tool and milling insert kit are provided for the gash milling of a workpiece. The tool comprises a tool body that defines a rotation axis and has a first end, an opposite second end, and a peripheral surface that extends around the rotation axis between the first end and the second end. A large number of separated seats, which are arranged one after the other in the tool body along a line and receive one each of corresponding number of replaceable milling inserts, comprise a primary main cutting edge and a secondary main cutting edge that converge to each other. The milling inserts comprise outer milling inserts, which project from the tool body by a first length from the rotation axis, and inner milling inserts, which project from the tool body by a second length from the rotation axis. The first length is considerably greater than the second length.

Abstract: A hob having a helically curved tooth profile. A plurality of segments covering only a limited angle range are attached to a base body for forming the tooth profile. The segments abut each other in the circumferential direction of the base body, and the segments form rows in the direction of the longitudinal axis of the base body. The segments each comprise a segment foot and a segment profile disposed diagonally thereon. The diagonal arrangement of the segment profile forms a coiled slope of the helically curved tooth profile in each segment and the tooth profile can be built up simply by arranging the segments in rows in the circumferential and the longitudinal directions.

Abstract: The invention relates to a device for generating teeth of workpieces (3) by hob peeling, having a workpiece spindle (1) that can be rotatably driven for accommodating the work wheel (3) to be geared, particularly internally, and having a tool spindle (2) that can be rotatably driven, said tool spindle (2) carrying a peeling wheel (4), which has a regular tooth pitch determined by the tooth spacing of the gearing of the workpiece (3). In order to improve the performance of the generic device and/or generic method, and to provide the peeling wheel suited therefor, it is proposed that the distance between at least some of the teeth of the peeling wheel (4) that are of identical shape corresponds to a multiple of the regular tooth pitch.

Abstract: Tool arrangement for the production of helical teeth in gear wheels, wherein a roughing hob (20), at least one deburring cutter (16, 18) and a finishing hob (12) can be fastened on a common mandrel (14) in a predetermined rotational position relative to one another, and the teeth of the finishing hob, which are situated along a helical line, each have a different cross section such that the engagement angle of the right or left flanks decreases continuously starting from a maximum value of the first tooth up to the last tooth, and the maximum engagement angle of the right flanks of the first or last tooth coincides with the minimum engagement angle of the left flanks, and vice versa.

Abstract: A milling cutter tool including a basic body and a replaceable cutting body. The cutting body includes a set of teeth which are situated with a uniform partition along one of a pair of opposite sides of the cutting body. The cutting body is fixed in a pocket having a support surface against which the underside of the cutting body is mounted. The support surface of the pocket, and the underside of the cutting body, are tipped at a negative axial angle ? of at least 0.5° in relation to a center axis (C1) of the basic body such that the teeth of the cutting body are located along a common, phantom helical line (X), which is concentric with the center axis (C1) of the basic body and has an even pitch which corresponds to the partition between the teeth.

Abstract: A hobbing cutter with a hob body which circumferentially has at least one helically shaped flight or a plurality of annular flights, including flanks on either side of a flight apex, wherein the flanks have alternately mounted thereon indexable inserts by means of screws and the indexable inserts extend into the flight apex, wherein the cutting edges of adjoining hobbing flights further are at a twisted offset from a line which runs in parallel with the axis of the hob body, and wherein the indexable inserts have associated therewith radially outwardly open chutes which transversely extend through the flight apex, wherein the cutting edges of the indexable inserts of adjoining flights are disposed at such an offset from each other that a straight shank of a screwdriver can be passed through a close-to-apex portion of the chutes in order to be engaged with a mounting bolt of an indexable insert on the adjoining flight.

Abstract: A gear hobbing cutter system that includes a cutter head body having a plurality of cartridge-receiving slots arranged in pairs comprising an inside and an outside cartridge-receiving slot. Each pair of inside and outside cartridge-receiving slots are capable of receiving a respective inside and outside cartridge assembly. To ensure that the inside and outside cartridge assemblies are properly positioned within their respective cartridge-receiving slots, one of the dimensions, preferably the length, of the inside cartridge-receiving slot and its respective inside cartridge assembly of a pair is different than the outside cartridge-receiving slot its respective outside cartridge assembly so as to form an error proofing system.

Abstract: A chamfer hob for and a method of providing a chamfered end and having an identical chamfer angle at both a front face and a back face of a gear including a shaft, a plurality of helical cutting vanes extending radially outwardly from the shaft, such that the radially outward surface of the cutting vanes defines a hob diameter, and a hob radius, a predetermined radial width of the desired chamfer and a depth of chamfer, such that the chamfering is done on both faces of the gear teeth ends resulting in a uniform chamfer around the periphery of the complete gear tooth.

Abstract: An apparatus is provided for manufacturing a gear component. The apparatus includes a plurality of tooling stocks movable relative to a base. The tooling stocks function to retain a component, as well as operably driving a combination hob/shaver tool and a combination chamfer/debut tool. The apparatus reduces the number of machines required to complete the gear component as well as reducing the cycle time for complete component manufacture. In this way, a more efficient manufacturing system is provided, whereby capital investment and operational costs are reduced.

Abstract: An apparatus is provided for manufacturing a gear component. The apparatus includes a plurality of tooling stocks movable relative to a base. The tooling stocks function to retain a component, as well as operably driving a combination hob/shaver tool and a combination chamfer/debur tool. The apparatus reduces the number of machines required to complete the gear component as well as reducing the cycle time for complete component manufacture. In this way, a more efficient manufacturing system is provided, whereby capital investment and operational costs are reduced.

Abstract: A chamfer hob for and a method of providing a chamfered end and having an identical chamfer angle at both a front face and a back face of a gear including a shaft, a plurality of helical cutting vanes extending radially outwardly from the shaft, such that the radially outward surface of the cutting vanes defines a hob diameter, and a hob radius, a predetermined radial width of the desired chamfer and a depth of chamfer, such that the chamfering is done on both faces of the gear teeth ends resulting in a uniform chamfer around the periphery of the complete gear tooth.

Abstract: An apparatus is provided for manufacturing a gear component. The apparatus includes a plurality of tooling stocks movable relative to a base. The tooling stocks function to retain a component, as well as operably driving a combination hob/shaver tool and a combination chamfer/debur tool. The apparatus reduces the number of machines required to complete the gear component as well as reducing the cycle time for complete component manufacture. In this way, a more efficient manufacturing system is provided, whereby capital investment and operational costs are reduced.

Abstract: A face hobbing cutter including a cutter body having a top surface and a bottom surface and a side surface extending between the top surface and the bottom surface. A plurality of slots are formed within the cutter body extending from the top surface inward into the cutter body. The slots are adapted to receive cutting blades wherein each cutting blade is fixed in position in the respective slot by a wedge clamping assembly. The wedge clamping assembly includes a wedge block and a wedge screw for operatively securing the wedge block within the respective slot. The wedge block includes an outwardly facing locking surface for engaging a side of the cutting blade. The face hobbing cutter further includes an adjustable stop. The adjustable stop is in communication with the slot to support the cutting blade at the desired height from the top surface of the face hobbing cutter.

Abstract: A cutting tool has a flute and land, which follow a helix angle, wherein the flute and land are connected to one another with a convex heel to provide a smooth contour to the tool surface and to provide improved performance. A grinding wheel for producing a cutting tool, along with a method for using such a grinding wheel, is also disclosed. Finally, a crush roll for dressing such a grinding wheel is also disclosed.

Abstract: A hob cutter includes a cutting portion and an abrading portion in mechanical communication with the cutting portion. The cutting portion includes a plurality of hob teeth having at least one gash extending therethrough to define a cutting face on a front of each hob tooth and a trailing face on a back of each hob tooth. The abrading portion includes a plurality of abrading teeth positioned adjacent to each other. Both the hob teeth and the abrading teeth are continuously formed and helically arranged.

Abstract: A face hobbing cutter including a cutter body having a top surface and a bottom surface and a side surface extending between the top surface and the bottom surface. A plurality of slots are formed within the cutter body extending from the top surface inward into the cutter body. The slots are adapted to receive cutting blades wherein each cutting blade is fixed in position in the respective slot by a wedge clamping assembly. The wedge clamping assembly includes a wedge block and a wedge screw for operatively securing the wedge block within the respective slot. The wedge block includes an outwardly facing locking surface for engaging a side of the cutting blade. The face hobbing cutter further includes an adjustable stop. The adjustable stop is in communication with the slot to support the cutting blade at the desired height from the top surface of the face hobbing cutter.

Abstract: A hobbing cutter, comprising:

Abstract: A hob cutter includes a cutting portion and an abrading portion in mechanical communication with the cutting portion. The cutting portion includes a plurality of hob teeth having at least one gash extending therethrough to define a cutting face on a front of each hob tooth and a trailing face on a back of each hob tooth. The abrading portion includes a plurality of abrading teeth positioned adjacent to each other. Both the hob teeth and the abrading teeth are continuously formed and helically arranged.

Abstract: An arrangement comprising a bore-type hobbing cutter and a holding arbor wherein the bore of the hobbing cutter has ground cylindrical centering surfaces at its ends and the arbor has complementary seating surfaces and wherein the hobbing cutter is axially chucked on the holding arbor by means of axial chucking means, where a preferably sleeve-shaped cage is disposed between centering surfaces and has a thickness which is smaller than the radial distance between centering and seating surfaces, and has an outside diameter which is smaller than the inside diameter of centering surfaces, the cage supports, in a circumferential direction, at least a number of prechucking elements, which are preferably metallic and are in contact with the associated centering surface and the seating surface, and said diameter and the distance between the contacting points or contacting lines of prechucking members are slightly larger than the radial distance between centering and seating surfaces.

Abstract: A screwing plate or thread cutting bit comprising at least one cutting tip whose contour matches the desired shape of the threading. The cutting tip is configured as a chip forming element which is shaped in the form of a spur located between both sides of the cutting faces. The chip forming element rises above the cutting faces more or less in the form of a table mountain. The flanks of the spur, which are slanted in the form of inclined walls, are spaced at different distances from the adjacent cutting edges so as to form cutting faces with differing widths.

Abstract: Gear cutting is to be effected in high efficiency and at low cost. To this end, using a hob 16 coated with at least one layer of a film of a composition comprising:(Ti.sub.(1-x) Al.sub.x)(N.sub.y C.sub.(1-y))0.2.ltoreq.x.ltoreq.0.850.25.ltoreq.y.ltoreq.1.0,dry cutting is performed at a cutting speed in the range of 80 to 400 m/min without using a cutting oil. Teeth can be generated at a greatly improved cutting speed without using any expensive tool such as a tool made of cemented carbide.

Abstract: A tool for manufacturing crown wheels by means of a machining hobbing process, which consists of a disc which can rotate about its axis and on the circumference of which machining elements are disposed whose cutting edges lie in the surface of a profile which mainly extends over the circumference of the disc as helical ribs. In each cross-sectional plane perpendicular to the screw direction of the ribs, the profile has the shape of a number of profile teeth situated next to one another. The profile shape is based on the base geometry of a pinion which is characteristic for the crown wheel to be manufactured and has involute toothing. The profile has such a shape that a part thereof lies outside the surface of revolution which is formed by rotation of the addendum circle of the characteristic pinion about the rotational axis of the tool.

Abstract: A cutter blade for use with a face hob type cutter for producing the teeth of spiral bevel and hypoid gear members by a continuous index, face hobbing process comprises a cutter blade shank having a cutting member provided at one end thereof. The cutting member includes a tooth cutting edge having a given axial pressure angle, and a relief edge adjacent the tooth cutting edge having an axial pressure angle greater than the axial pressure angle of the tooth cutting edge. The relief edge of the cutting member simultaneously forms a relief on the tip of the tooth of the gear member as the tooth is cut by the tooth cutting edge of the cutting member.

Abstract: A finishing gear hob whose shape is of a worm includes a working side with cutting edges K, which are in the form of a continuous equally-rising spaced cylindrical helix, and edges K are formed by the intersection of the rake faces A, i.e. the top surfaces of the worm, and the flanks B, i.e. the working sides of the worm. The number of cutting edges K equals to the thread number i of the worm, where i is a positive integer. The normal pitch P.sub.n of the working side of the worm is equal to the normal base pitch t.sub.b of the machined gear .pi.m.sub.n COS.alpha..sub.n where m.sub.n is the normal module of the machined gear; and .alpha..sub.n is the normal pressure angle at the reference circle of the machined gear. The lead angle .lambda. of the helix cutting edge is calculated by the formula Sin.lambda.=(im.sub.n COS.alpha..sub.n)/2R where R is the radius of cylindrical helix cutting edge K, and the helix lead P of the helix cutting edge P=(i.pi.m.sub.n COS.alpha..sub.n)/COS.lambda..

Abstract: A cutter for producing face gears, comprising a disc-shaped cutter body with cutting teeth (23) fitted on the periphery. The cutting edge (24) of each cutting tooth lies in a surface of revolution which is produced by turning an imaginary gear wheel of infinitely low thickness about the axis (20) of the cutter and simultaneously about its own axis. Each cutting tooth (23) of the cutter is of such a shape that the cutting tooth is re-grindable, without the shape of the cutting edge of the cutting tooth changing as a result. This is achieved through the fact that the profile of each cutting tooth shifts in planes (22, 22a, 22b...) from the cutting edge (24) of the cutting tooth to the rear side thereof in the direction of the axis (20) of the cutter.

Abstract: A novel hob construction includes a plurality of blades and a cylindrical main body having opposite axial ends. Flanges including axially aligned slots for receiving the blades are located only upon the ends of the main body. A chocking material is provided over the circumferential extent of the main body and between the blades for forming an effective physical extension of the body for bonding the blades to the body and to each other.

Abstract: A rotary tool for generating bevel gears, characterized in that a module m at a plane of rotation which is away from a reference point on a central axis by a distance .xi. in the axial direction is shown by an equation;m=m.sub.0 (1+.kappa..xi.)where, m.sub.0 denotes a module at the reference point and .kappa. is a constant.

Abstract: A hob for cutting gear teeth includes a plurality of generally axially extending and generally circumferentially spaced rows of teeth. The hob is adapted to be thrown away instead of being re-sharpened when the cutting edges of the teeth become worn. Consistent with this, the teeth--rather than being formed with a conventional re-sharpenable profile--are ground so that the tip, the side flanks and the root of each tooth are of a circumferentially concave shape. The grinding is effected by a unique positional mode in which the hob blank is held stationary and in which the grinding wheel is located relative to the blank in such a manner as to enable the use of a wheel of the largest possible diameter for the design criteria of the particular hob being formed.

Abstract: A rack and pinion gear having helical teeth. A conical hob is employed for cutting recessed rack teeth in the work piece by continuously engaging the hob and work piece as the work piece moves longitudinally beneath (or with respect to) the rotating hob. To mate with the helical teeth in the rack, a helical gear having rounded or arcuate teeth is provided.

Abstract: A hob which includes a cylindrical body having a longitudinal axis, a plurality of tooth elements each with a top edge portion of the same height arranged in succession along at least one helical line extending around the longitudinal axis of the hob wherein shoulder portions of leading or trailing sides of each of the tooth elements are reduced in their basic contour in staggered fashion, each of the tooth elements including a first shoulder edge portion intersecting the top edge portion at a distance located 0.05 m to 0.1 m from the center line of each of the tooth elements and a first angle of 25.degree. to 45.degree., a second shoulder edge portion disposed adjacent the first shoulder edge portion, and a third shoulder edge portion intersecting the second shoulder edge portion at a distance 0.5 m to 1.0 m from the top edge portion at a second angle of 3.5.degree. to 10.degree. wherein m represents a module.