摘要:
A machine (20) for rolling power transmission formations in a workpiece includes a base (20) having a lower end (24) for providing support thereof in an upwardly standing orientation. The base (22) includes a pair of spaced base portions (30) and a rear connecting base portion (32). The spaced base portions (30) project forwardly from the rear connecting base portion (32) to define a vertically extending workspace (34) and are secured to each other and to the rear connecting base portion by tie rod assemblies (38, 40, 42). Headstock and tailstock spindle supports (48,52) cooperate to rotatably mount the workpiece about a rotational axis (A) of the machine. A pair of vertically movable slides (66) respectively mount a pair of forming racks (68) and are respectively mounted by the spaced base portions (30) on opposite sides of the rotational axis (A) about which the workpiece is rotatably supported such that the forming racks oppose each other and roll power transmission formations in the workpiece during vertical movement in opposite directions.
摘要:
A machine (20) for rolling power transmission formations in a workpiece includes a base (20) having a pair of spaced base portions (30), headstock and tailstock spindle supports (48,52) that cooperate to mount the workpiece for rotation about a rotational axis of the machine and a pair of antifriction linear bearings (58) respectively associated with the pair of spaced base portions. Each bearing (58) includes a stationary carriage (60) and an elongated movable guideway (62). The stationary carriages (60) are respectively mounted on the pair of spaced base portions (30) with the rotational axis (A) of the machine (20) therebetween, and each stationary carriage (60) includes rolling elements that support the associated movable guideway (62) for movement along its length on the adjacent side of the supported workpiece. A pair of movable slides (66) respectively support a pair of forming racks (68) and are respectively supported by the elongated movable guideways (62) of the pair of antifriction linear bearings (58) to move the forming racks to roll power transmission formations in the workpiece. The machine (20) also has a second pair of antifriction linear bearings (78) each of which has a stationary guideway (80) and a pair of movable carriages (82) for supporting the associated slides (66). A pair of electric servomotors (94) respectively move the pair of slides (66) through a pair of rotary connectors (96).
摘要:
A machine (20) for rolling power transmission formations in a workpiece includes a base (22) having spaced base portions (30) and a rear connecting base portion (32) extending between the spaced base portions which project forwardly therefrom to define a workspace (34). A headstock spindle support (48) is mounted on the rear connecting base portion (32) along a rotational axis A of the machine and is moved therealong by a headstock electric servomotor (152). A tailstock spindle support (52) is mounted on the spaced base portions (30) adjacent front ends (36) thereof to cooperate with the headstock spindle support (48) in rotatably mounting the workpiece and is also movable along the rotational axis by a tailstock electric servomotor (180). A pair of movable slides (66) respectively support a pair of forming racks (68) and are respectively supported by the pair of spaced base portions (30) within the workspace (34). A pair of slide electric servomotors (94) move the pair of slides (66) in opposite directions such that the forming racks (68) thereon provide the rolling of the power transmission formations in the workpiece.
摘要:
Apparatus and a method for splining annular thin wall power transmission members in a manner that provides precise spline formation and accurately maintains the roundness of the splined members. A toothed pinion type mandrel of the apparatus mounts a power transmission member to be splined between a pair of cooperable dies of the apparatus. Each die has at least one first tooth group and a second tooth group, and teeth of each tooth group are spaced therealong with the teeth of the first group spaced farther from each other than the teeth of the second group. Driving of the dies relative to each other and the power transmission member mounted on the mandrel initially engages the farther spaced teeth with the mounted transmission member so as to cooperate in a meshing relationship with the toothed mandrel with the power transmission member therebetween to form a first set of splines. Subsequent movement of the dies engages the closer spaced teeth with the power transmission member to mesh with the first set of splines therein while concomitantly cooperating in a meshing relationship with the toothed mandrel with the power transmission member therebetween to form a second set of splines intermediate the first set of splines. Still subsequent driving movement of the dies again engages the splined power transmission member with the farther spaced teeth to mesh with the splines while skipping at least alternating locations therebetween to correct any out of roundness of the member.
摘要:
A power transmission member (20) is provided by a spline rolling method and apparatus (36) that includes a pair of racks (38) for providing splines (24) with ends (34) opposing each other in a precisely spaced relationship at an annular groove (30) that is utilized to provide snap ring or other fastener positioning for axially locating the member during use.
摘要:
A power transmission member (20) is provided by a spline rolling method and apparatus (36) that includes a pair of racks (38) for providing splines (24) with ends (34) opposing each other in a precisely spaced relationship at an annular groove (30) that is utilized to provide snap ring or other fastener positioning for axially locating the member during use.
摘要:
A method and machine for splining a power transmission member by rolling are disclosed as well as the resultant splined member. An externally toothed pinion-type mandrel of the machine is rotatably mounted between a pair of elongated dies. An unsplined member is supported by the mandrel so that sliding movement of the elongated dies from an end-to-end relationship to an overlapping relationship meshes teeth on the dies and the teeth on the mandrel with a thin-walled annular sleeve portion of the member therebetween. The meshing of the die and mandrel teeth deforms the sleeve portion of the member radially to form the splines and also rotates the mandrel to complete the spline forming operation about the total circumference of the member. The mandrel may be removably mounted in a manner that permits a pair of the members to be simultaneously splined by a single stroke of the elongated dies. The mandrel and one of the dies include synchronizing teeth that are directly meshed with each other to synchronize the commencement of mandrel rotation with the commencement of die movement. The die teeth are sized to form the splines radially in a unique progressive manner and have tooth forms that prevent slippage between the dies and the sleeve portion being splined. Also, the teeth may form the lengths of the splines progressively to lessen the maximum tooth load and thereby increase the die life. The splined member has relatively tough splines and an end mounting wall that is maintained flat during the spline rolling.