摘要:
Method and machine for making rotational bodies by plastic deformation with a diameter varying lengthwise. Method wherein, upon rotating the blank, a local pressure is exerted with a progressive increase of force involved at start so as to reach a sufficient limit. For implementing such method, the blank is treated between two pressure areas which have an intersection by displacing the areas relatively between each other, while the blank is displaced in relation to the intersection point of the two areas and the variation of the diameter of the object to be manufactured.
摘要:
An apparatus and a method are provided for the thermomechanical net shape finishing of precision gear tooth surfaces by controlled deformation into the metastable austenitic condition. To this end, an arrangement of a fixed axis through-feed motion of workpiece (42) and moving axes in-feed motion of two opposed rolling dies (44,46) are utilized. By means of process control methods and architecture for accomplishing precise mechanical motions, thermal and environmental control, and timely and automatic transfer of workpieces, high strength and high accuracy gear tooth surfaces can be produced.
摘要:
The forming machine includes a load station (P i ) adjacent one end, an unload station (P 2 ) adjacent the other end and a first work station (S 1 ), turnaround station (S T ) and second work station (S 2 ) spaced longitudinally in succession between the load and unload stations along a workpart flow path. Each work station includes a rotatable spindle (40, 42) fixed in position on one side of the flow path and a tailstock (44, 46) with a workpart support (48, 50) slidable toward the spindle transversely of the flow path. An overhead transfer mechanism (100) is slidable along the flow path and grippers to transfer workparts successively from one station to the other along the flow path. First and second pairs of forming tools (20, 22) are spaced longitudinally to cooperate with the first and second work stations (S 1 , S 2 ) and are slidable longitudinally and simultaneously in engagement with first and second workparts rotatably and transversely supported at the respective work stations between the respective spindle and tailstock. The turnaround station (Sr) is operable to permit opposite ends of a-workpart such as a solid shaft to be formed by the forming tools.
摘要:
An apparatus for working a workpiece comprises a drive unit for rotating a forming tool about an axis of rotation, a forming roller for working said workpiece, means for moving the forming roller in an x-direction and a y-direction with respect to said drive means, and a control unit comprising a memory for one or more control programmes. In this embodiment the axis of rotation of the drive unit coincides with the x-direction. The axis of rotation extends at least substantially in vertical direction. The drive unit and the forming tool can be moved in x-direction by the moving means.
摘要:
The device and the method of the invention relate to the cold-forming by rolling of revolution parts (7). The device is comprised of two similar serrated rollers (9A, 9B) arranged symetrically with respect to the part to be formed (7), and which are similarly rotationally driven at a speed Vm and approaching progressively the axis of the part to be formed (X1-X1). Said part (7) is itself rotationally driven at a speed Vp such that Vp = Vm N1/N2, N1 being the number of grooves on each serrated roller (9A, 9B), N2 being the number of grooves to be formed on the part (7). An initial adjustment allows to match the grooves formed by each of the rollers or wheels on the part (7). The device and the method allow to obtain parts with a very high precision.
摘要:
An apparatus and method are provided for the thermomechanical net shape finishing of precision gear tooth surfaces by controlled deformation into the metastable austenitic condition. To this end, an arrangement of a fixed axis through-feed motion of workpiece (42) and moving axes in-feed motion of two opposed rolling dies (44, 46) are utilized. By means of process control methods and architecture for accomplishing precise mechanical motions, thermal and environmental control, and timely and automatic transfer of workpieces, high strength and high accuracy gear tooth surfaces can be produced.
摘要:
Bei einer Profilwalzmaschine zum Einwalzen eines Profils in Rohlinge (2) mit einer festen (6) und einer beweglichen (7) Walzbacke sowie einer Zuführvorrichtung (3) mit einer Gleitschiene (8) und einer Vorschubeinrichtung (9) zum Zuführen der Rohlinge (2) ist ein hin- und herschwingender Einsetzschieber (14) mit einer vorderen Schiebefläche (15) zum Schieben eines Rohlings (2) zu einer Einlaufstelle (5) an beiden Walzbacken (6, 7) vorgesehen, der bei seiner Bewegung mit einer unteren Endkante (16) seiner Schiebefläche (15) eine geschlossene Bahnkurve (25) mit einem oberen Bahnabschnitt (8) und einem unteren, zur Gleitschiene (8) hin gewölbt verlaufenden Bahnabschnitt (29) durchläuft. Bei Bewegung längs des unteren Bahnabschnitts (29) liegt die Schiebefläche (15) gegen die Rückseite des vordersten Rohlings (2) in der Zuführvorrichtung (3) an und schiebt diesen zur Einlaufstelle (5) der Walzbacken (6, 7). Der obere Bahnabschnitt (28) zum Rücklauf des Einsetzschiebers (14) liegt so, daß, beim Rücklauf des Einsetzschiebers (14) die Endkante seiner vorderen Schiebefläche entlang dem oberen Bahnabschnitt (28) bis zum hinteren Endpunkt (27) stets in einem Abstand von dem in der Zuführvorrichtung (3) in Förderrichtung (A) vordersten Rohling (2) entfernt geführt ist.