摘要:
The invention concerns a gear teeth generation method carried out on multi-axis machines, using a disk tool (1). The disk tool (1) is travelling along the a gear tooth (2) where its motion along a gap adjacent to the gear tooth (2) is synchronized with the a roll motion performed by said multi-axis machine so that the a pressure line (3) is on the a machining surface (4) of the disk tool (1), the disk tool (1) is machining the a bottom land surface (6) of the tooth (2) with its perimeter (5), wherein the machining of the flank of the tooth (2) starts with the disk tool (1) positioned with reference to the gear tooth (2) so that the pressure line (3) is near the a first edge (7) of the tooth flank (2), and consecutively the mutual positions of the disk tool (1) and the gear tooth (2) are changed to cause the pressure line (3) to move further away from the first edge (7) of the tooth flank (2), and the machining of the tooth flank (2) is finished when the pressure line (3) reaches the opposite edge (8) of the gear flank (2), wherein the positions of the tooth flank (2) and the disk tool (1) are so that at every stage of machining of the tooth flank (2) the pressure line (3) is on the machining surface (4) of the disk tool (1).
摘要:
A differential assembly (30) for a motor vehicle includes a plurality of pinion gears (88) in meshing engagement with a plurality of side gears (82,86). At least one of the pinion gears (88) and side gears (82,86) is formed from a heated tubular preform in a forging die. A method for manufacturing a differential assembly (30) is also provided.
摘要:
A method that includes: providing a blank; heating the blank; forging the heated blank to form a forged gear having a plurality of spiral bevel gear teeth; machining the forged gear to a predetermined thickness while locating off of the plurality of gear teeth to form a green machined forged gear; rotationally and axially engaging a die to the gear teeth of the green machined forged gear to induce plastic flow in the gear teeth to form an intermediate gear in which the plurality of gear teeth conform to a predetermined tooth form; heat-treating the intermediate gear to form a hardened intermediate gear; and lapping the plurality of gear teeth of the hardened intermediate gear with a spiral bevel pinion gear; wherein the plurality of gear teeth are not machined in a chip-producing machining operation before the plurality of gear teeth are lapped.
摘要:
A computer controlled machine for forming longitudinally curved tooth bevel and hypoid gears having a minimum number of movable machine axes for setup and operation. The movable axes include three rectilinear axes (X, Y and Z) and three rotational axes (T, W and P). The rectilinear axes are arranged in mutually orthogonal directions. Two of the rotational axes (T and W) provide for rotating tools (26,27) and work gear (42,43), respectively. The third rotational axis (P) provides for adjusting the relative angular orientations of tool axis (T) and work axis (W). Pivot axis (P) is positioned with respect to both tool axis (T) and work axis (W) at fixed inclination angles. A method of operating the computer controlled machine provides for controlling the movable axis (X, Y, Z, T, W and P) in response to setup and operating parameters of conventional bevel and hypoid gear generating machines.
摘要:
A differential assembly (30) for a motor vehicle includes a plurality of pinion gears (88) in meshing engagement with a plurality of side gears (82,86). At least one of the pinion gears (88) and side gears (82,86) is formed from a heated tubular preform in a forging die. A method for manufacturing a differential assembly (30) is also provided.
摘要:
A computer controlled machine for forming longitudinally curved tooth bevel and hypoid gears having a minimum number of movable machine axes for setup and operation. The movable axes include three rectilinear axes (X, Y and Z) and three rotational axes (T, W and P). The rectilinear axes are arranged in mutually orthogonal directions. Two of the rotational axes (T and W) provide for rotating tool (26, 27) and work gear (42, 43), respectively. The third rotational axis (P) provides for adjusting the relative angular orientations of tool axis (T) and work axis (W). Pivot axis (P) is positioned with respect to both tool axis (T) and work axis (W) at fixed inclination angles. A method of operating the computer controlled machine provides for controlling the movable axis (X, Y, Z, T, W, and P) in response to setup and operating parameters of conventional bevel and hypoid gear generating machines.
摘要:
An improved method is provided for finish machining forged and/or rough-cut teeth (8) of a ring gear (40) by which a rotary tool (24) such as a rotary carbide milling tool is rotated about a rotational axis "r" that projectionally intersects a bottom surface (12) of tooth (8) as it tracks along a predetermined tool path enabling the rotary tool to be in close proximity to sidewalls (14,14′) of teeth (8) and thereby eliminating the practice of having to normalize the ring gear microstructure prior to machining teeth (8).