Abstract: A cutter head (4, 6) having a lock spring (30) utilized with an adjustment screw (16) for preventing the adjustment screw from loosening during machining. Once positioned by turning the adjustment screw, a cutting blade (8) will not change position in a mounting slot (10) due to a loosening adjustment screw.

Abstract: Bell-shaped milling cutter for producing preferably profiled, arcuate grooves, has a main body in the form of a circular disk and a plurality of cutting edge carriers which extend substantially perpendicularly to the plane of the main body and which are arranged in succession in the peripheral direction along a circular path about the center of the main body and are mounted releasably to the main body. To provide a bell-shaped milling cutter having the features set out in the opening part of this specification, which permits simplified and less expensive production of arcuate grooves without having to forego the precise arrangement and orientation of the cutting bits of the known bell-shaped milling cutters, provided at the main body are positioning devices which permit mounting of the cutting edge carriers in a plurality of mutually different radial spacings on the main body.

Abstract: A tool for cyclo-palloid gear hobbing includes a head and a plurality of milling inserts protruding from a front side thereof. The milling inserts are mounted, two by two, in chip removal units that are detachably connected to the head. Each milling insert is clamped by a wedge and a screw that are easy to access. The wedge acts tangentially against the milling insert behind which there is a tangential support in the form of a shoulder. By clamping the milling insert with a respective wedge the milling inserts can be mounted and dismounted in a simple way, and each group of wedge+milling insert+tangential support can be located tangentially and thereby efficiently carry the cutting forces acting on the milling insert. In further aspects, an insert holder intended for the tool, a chip removal unit of an insert holder and an insert kit are disclosed.

Abstract: A tool head is provided that can easily correct the shape of a tooth surface. Slot holes are formed in a main head body, that tilt either distally or proximately to the central axis of rotation (CAR) of the main head body. Concave tooth surface blades for cutting concave tooth surfaces are installed in the slot holes that tilt distally, and convex tooth surface blades for cutting convex tooth surfaces are formed in the slot holes that tilt proximately. By changing the amount that the concave or convex tooth surface blades protrude, the cutting portions of the concave or convex tooth surface blades are moved in either distal or proximate directions. By changing the distance from the CAR to the cutting portions in this manner, it is possible to correct the shape of the concave or convex tooth surfaces of a bevel gear.

Abstract: A face hobbing cutter system for face hobbing spiral bevel gears. The system includes at least one set of detachable cartridge assemblies having a plurality of respective cartridge assemblies. Each cartridge assembly includes a plurality of cartridges and indexable milling inserts. A part of the inserts of each set of cartridge assemblies are rhombic, tangential-mounted inserts for milling flanks of spiral bevel gear teeth, while the other inserts are grooving inserts, which are arranged transversely to the tangential-mounted inserts, for milling roots of spiral bevel gear teeth. The tangential-mounted inserts of each set of cartridge assemblies are provided in pairs, one being provided with its front facing the central axis, and the other being provided with its front facing away the central axis, to respectively mill concave curved flanks and convex curved flanks of the spiral bevel gear teeth.

Abstract: A face milling cutter method for manufacturing various hypocycloidal bevel gears that is characterized in that the following steps are performed to manufacture a first bevel gear: equipping a universal face milling cutter in a first configuration with a first number of cutter groups that corresponds to a first number of passes. A first bevel gear is then produced in the continuous partial method using the universal face milling cutter in the first configuration. The following steps are performed to manufacture a second bevel gear: equipping the same universal face milling cutter in a second configuration with a second number of cutter groups that corresponds to a second number of passes. The second bevel gear is then produced in the continuous partial method using the universal face milling cutter in the second configuration.

Abstract: A tool head is provided that can easily correct the shape of a tooth surface. Slot holes are formed in a main head body, that tilt either distally or proximately to the central axis of rotation (CAR) of the main head body. Concave tooth surface blades for cutting concave tooth surfaces are installed in the slot holes that tilt distally, and convex tooth surface blades for cutting convex tooth surfaces are formed in the slot holes that tilt proximately. By changing the amount that the concave or convex tooth surface blades protrude, the cutting portions of the concave or convex tooth surface blades are moved in either distal or proximate directions. By changing the distance from the CAR to the cutting portions in this manner, it is possible to correct the shape of the concave or convex tooth surfaces of a bevel gear.

Abstract: The invention relates to a form blade (10) for the milling of bevel gears, with a base body (11) which has a receiving area and with at least two cutting strips (13.1, 13.2) with a cutting edge (18.1). The cutting strips (13.1, 13.2) are detachably fixed in corresponding receiving areas (12.1, 12.2) of the base body (11).

Abstract: A device (10) for soft machining of bevel gears, having a receptacle (12) for receiving a bevel gear blank (K1) and having a tool spindle (13.1) for receiving a cutter head (13.2). The device comprises a machining arm (11) having a pivot axis (A1) which has the tool spindle (13.1) for receiving the cutter head (13.2) on a first side and has a tool spindle (14.1) for receiving an end-milling cutter (14.2) on a second side. A CNC controller (S) puts the end-milling cutter (14.2) into rapid rotation to cut a predefined number of tooth gaps on the bevel gear blank (K1). After the machining arm (11) is pivoted, the cutter head used as the bevel gear finishing tool (13.2) is used. It is put into slower rotation to machining the bevel gear blank (K1) using the bevel gear finishing tool (13.

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 side cutting edge having a given axial pressure angle, and a tooth topland cutting edge. The tooth topland cutting edge of the cutting member simultaneously forms a topland surface of the tooth of the gear member as the tooth is cut by the tooth side cutting edge of the cutting member.

Abstract: One-piece cutter body for gear cutting operations. The one-piece cutter body has a plurality of circumferentially spaced slots for receipt of gear cutting blade. The slots are formed by a heatless electroerosive process, preferably electron-discharge machining (EDM) process utilizes computer numerical control (CNC) methods. A cutter body having outstanding strength and durability with highly precise slot configurations is obtained.

Abstract: Cutting blade and system that allows all the freedoms of the three-side-ground cutting blade while using a two-side-ground cutting blade. A new cutting edge can be defined on the two-side-ground cutting blade that will duplicate the tooth surface cut by the three-side-ground cutting blade with different hook and side rake angles. The new cutting edge of the two-side-ground cutting blade is determined by a plurality of points, each point corresponding to a point on the three-side-ground cutting blade, such that when cutting, each point along the cutting edge of a two-side ground cutting blade will lie on the same epicycloid generated by the corresponding points on a three-side-ground cutting blade with different hook and side rake angles.

Abstract: A cutter head including a cutter body portion having a first outer surface and a second outer surface located inward of the first outer surface. Both first and second outer surfaces are interrupted by a plurality of blade receiving slots which extend inward into the cutter body portion. The first and second outer surfaces are arranged such that an annular projection is formed protruding from the second outer surface and extending to the first outer surface. The annular projection is also interrupted by the plurality of cutting blade slots thus forming a plurality of individual projections. The cutter head additionally includes a clamping ring extending about the cutter body and secured to the annular projection.

Abstract: A round bar cutting tool (10) and a cutter head (8) provided especially for the same are provided. The cutting tool has a shank with a generally round cross-section for being fixed by clamping means (28, 30) in a cutting tool receiving bore (12) of the cutter head (8). A substantially planar positioning surface (38) which serves as an engagement surface for the clamping means (28, 30) is located along the shank length in an extension of a cutting face (43) formed on the cutting end (40) of the round bar cutting tool (10), parallel to the longitudinal cutting tool axis. The cutting face (43) and the positioning surface (38) lie in the same plane parallel to the longitudinal cutting tool axis. The cutting face is not reground during sharpening and can therefore have a coating which increases the serviceable life of the cutting edge.

Abstract: A method for determining front-face indexing errors of like cutting blades mounted in a face hobbing cutter head. The cutter head is rotatable about a cutter axis and the like cutting blades (e.g. inside cutting blades or outside cutting blades) each having a cutting edge and are arranged in a plurality of blade groups in the cutter head. The method comprises determining the angular position of the front face of one or more of the like cutting blades about to the cutter axis by rotating the cutting edge of one or more of the like cutting blades relative to an angular detecting means, such as a non-contacting probe. The measured front face angular positions are compared with respective theoretical front face angular positions and an angular difference, .DELTA..phi..sub.c, is calculated. A cutting blade front face index error, F.sub.d, is then calculated and this error amount may be compared to acceptable limits and the blade may be replaced of the cutter scrapped if such limits are exceeded.

Abstract: To provide better possibilities for shaping or forming the tooth bearing pattern or localized tooth contact the cutting edges, i.e. the outer and the inner cutting edges, of the cutters are inserted into the face cutter head such that an end of the cutting edge which faces the base of the tooth leads the other end of the same cutting edge.

Abstract: A face milling type gear cutting assembly including contiguous cutting tools positioned in a common slot with means for preserving clearance for chip removal between these tools. The cutting assembly also includes a tool clamping arrangement featuring a novel clamping block which is releasably attached to a screw element in situ.

Abstract: A face milling type gear cutting assembly including contiguous cutting tools positioned in a common slot with means for preserving clearance for chip removal between these tools. The cutting assembly also includes a tool clamping arrangement featuring a novel clamping block which is releasably attached to a screw element in situ.

Abstract: An improved cutting tool intended primarily for gear cutting operations and a method of manufacturing this new tool. The tool is of a type formed from a length of bar stock and may be resharpened while preserving metallurgical or other treatments on front cutting faces of the tool. The improved tool also includes a base mounting portion and a cutting end. A first cutting face is formed in part of the length of the tool and a second cutting face is formed throughout substantially the full length of the tool in a way that preserves important mounting surfaces in the base portion of the tool.

Abstract: In an end cutter head for a gear cutting machine for fabricating gears by cutting out tooth gaps or slots, cutters are provided for the purpose of increasing the cutting output or rate, which cutters each have two cutting or chip faces. In the method for refacing or regrinding the cutters, the flank clearance surfaces or faces and a top clearance surface or face of each cutter are conjointly refaced with the cutters inserted in the end cutter head which is chucked to a grinding machine.

Abstract: A cutter head assembly and method of assembly design for use with a continuously indexing gear cutting machine is described as including slots formed through the face of said assembly of particular orientation for receiving cutting tools characterized by their front faces requiring no resharpening. The assembly is adaptive to cut a range of job requirements while preserving the front face portion of the cutting tools.

Abstract: A gear cutting tool is provided with a chip breaking surface along its front face for breaking chip formations between a side and bottom of a tooth slot as the tool advances through the slot in a cutting operation.

Abstract: Radial adjustment of cutter blades in a roughing hypoid gear cutter is effected by a tapered adjustment block. A differential screw engages threads in the block and in the cutter body to cause relative axial displacement. The taper on the adjustment block in cooperation with a tapered surface on the cutter body translates the axial displacement into a radial displacement of the upper surface of the adjustment block and the corresponding cutter blade. A pair of cap screws permit independent axial adjustment of each cutter blade. A one piece cutter body provides maximum simplicity and rigidity.

Abstract: A gear cutting tool is provided with angular planar surfaces along its front face for providing first and second side rake angles on the tool. The angular planar surfaces do not rquire resharpening when the tool is resharpened.

Abstract: A face milling cutter head for producing trapezoidal grooves, e.g.

Abstract: Tooth forming blades for cutting hypoid pinion and ring gears, each including a pressure angle face and an end face which require periodic sharpening, and a front or cutting face including a predetermined rake angle formed along the full blade length and requiring no sharpening, the blades being adapted to being mounted in radial receiving slots formed in a cutter body aligned at their cutting ends and having overall lengths which vary in a random manner, affective to being individually replaced after being ground to a predetermined minimum length as a result of repeated sharpening operations.

Abstract: Milling cutter head for making arcuate toothing, comprising a substantially disk-shaped carrier body that is surrounded by a locking ring, the body having therein one or more pairs of grooves of a stepped cross-section, for receiving a corresponding number of pairs of removable, axial milling cutters, in each pair one being an inner and one an outer cutter. These cutters have head cutting and flank cutting edges, and optionally head and flank clearance surfaces. The head cutting edges are made of overlap partially; the cutting edges are formed at intersecting points between the clearance surfaces. Both kinds of cutters have cylindrical body surfaces that include chip bearing surfaces and associated limiting surfaces, as well as optional supporting surfaces. The inclination angle defined between the chip bearing and the limiting surfaces is smaller than 90.degree.. The cutters are preferably rod-shaped and have quadrilateral cross-sections.

Abstract: A cutter head assembly is described as including blade-receiving slots of a particular design and geometry to receive different types of cutting blades having cutting face portions which do not require resharpening. The cutter head assembly provides for positioning of such different types of cutting blades so that a negative hook position is avoided for any blade designed within a range of selected parameters for use in the assembly. This assembly provides for radial adjustment of blade positions so as to offer different cutter diameters for a given assembly. In addition, cutting blades having built-in side rake angles are disclosed for use with such a cutter head assembly.