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:
Method and apparatus wherein the front machining of a gear blank (40) are carried out on a CNC bevel gear generating machine (44) utilizing the motions available in such machines with minimal modifications to the existing machine tool.
Abstract:
Generating cutting processes for producing bevel gears and employing a single rotary disc cutter (36) wherein a portion of the generating cutting process effectively includes a reduction (38) of the workpiece roll angle (40) during generating thereby reducing or eliminating cutting action on the clearance side (42) of the rotary disc cutter.
Abstract:
Disclosed herein is a process for feeding a tool (2) relative to a workpiece (12) in a machining process such as a process for forming bevel and hypoid gears. The method comprises feeding the tool (2) from an initial contact position (12i) with the workpiece to a full depth position (12f) in the workpiece along a feedpath at least a portion of which is defined by a feed vector (F) having at least two feed vector components lying in an axial plane. The first feed vector component (G') being substantially in the direction of the axis (G) of a theoretical generating gear and the second feed vector component (H) being substantially in a direction perpendicular to the generating gear axis (G). The feed vector (F) may include a third feed vector component (N') lying in a normal plane. With this feedpath undesirable tool shifting and workpiece spiral angle changes are significantly reduced.
Abstract:
A method of forming a relief at the toe end (26) of the teeth on a bevel gear (12) is disclosed. The width of the blades that cut the longitudinally extending convex (24) or concave (22) profiles of the flanks of the teeth is increased to a dimension greater than the width of the tooth slot at the toe end (26) whereby additional stock (32) is removed from the toe end (26) of the flank opposite the flank being cut by the blades. The relief (34) is formed at the toe end (26) of each tooth with the relief (34) being on the same flank profile for all teeth. Lapping interference is eliminated. A separate chamfering operation is not required.