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EP3117921B1 - Walzvorrichtung und walzverfahren - Google Patents

Walzvorrichtung und walzverfahren Download PDF

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Publication number
EP3117921B1
EP3117921B1 EP15761174.0A EP15761174A EP3117921B1 EP 3117921 B1 EP3117921 B1 EP 3117921B1 EP 15761174 A EP15761174 A EP 15761174A EP 3117921 B1 EP3117921 B1 EP 3117921B1
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EP
European Patent Office
Prior art keywords
mandrel
outer peripheral
peripheral surface
axial direction
workpiece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15761174.0A
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English (en)
French (fr)
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EP3117921A1 (de
EP3117921A4 (de
Inventor
Kazuto Kobayashi
Yuu Yasuda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NSK Ltd
Original Assignee
NSK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NSK Ltd filed Critical NSK Ltd
Publication of EP3117921A1 publication Critical patent/EP3117921A1/de
Publication of EP3117921A4 publication Critical patent/EP3117921A4/de
Application granted granted Critical
Publication of EP3117921B1 publication Critical patent/EP3117921B1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
    • B21H1/12—Making articles shaped as bodies of revolution rings of restricted axial length rings for ball or roller bearings

Definitions

  • the present invention relates to rolling processing devices and rolling processing methods, and relates to a rolling processing device for producing annular members applied to inner rings and outer rings of, for example, a rolling bearing, and a rolling processing method using the same.
  • the annular members conventionally applied to the inner rings and outer rings of the rolling bearings and the like are produced by rolling (press) processing of annular workpieces.
  • rolling processing include the method disclosed in PTL 1.
  • a rolling processing device 100 including a support roll 101, a forming roll 102, and a mandrel 103 is used in the conventional rolling processing.
  • a workpiece 104 is arranged such that the inner surface of the workpiece 104 abuts with the outer peripheral surface of the mandrel 103, and the outer peripheral surface of the workpiece 104 abuts with the inner peripheral surface of the forming roll 102.
  • the workpiece 104 is pressed by rotating the roll 102 and the mandrel 103 while making a rotary shaft of the forming roll 102 get closer to a rotary shaft of the mandrel 103, and is formed into an annular member.
  • PTL 2 discloses the technology for offsetting the bending moment and preventing breakage of the mandrel 103 in such a rolling processing device. PTL 2 addresses the offset of the bending moment with a mechanical structure.
  • PTL 1 and PTL 2 are, however, those for forming a single annular member from a single workpiece in a single rolling process. Thus, the working efficiency has room for improvement.
  • PTL 3 discloses a technology for cold rolling two workpieces applied to a taper bearing all at one time.
  • the load in the process also corresponds to three workpieces (approximately three times), and increases the distance between support points D. This results in an increase in the possibility of breaking the mandrel 103. This is because the forming force corresponding to three workpieces (approximately three times) is applied to the mandrel 103 in the same direction, and thus increases bending applied to the mandrel 103.
  • the present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a rolling processing device and a rolling processing method capable of producing annular members by rolling three or more workpieces at the same time and reducing the possibility of breakage of a mandrel.
  • a rolling processing device and a rolling processing method capable of producing annular members by rolling-forming three or more workpieces at the same time while reducing the possibility of breakage of a mandrel can be provided.
  • FIG. 1 is a cross-sectional view of a state where workpieces are set in the rolling processing device and the rolling processing method, in a first embodiment of the present invention.
  • a rolling processing device 1 in the present embodiment includes a forming roll 10, a support roll 20, and a mandrel 30.
  • the forming roll 10, the support roll 20, and the mandrel 30 respectively include rotary shafts 11, 21, and 31, which are respectively arranged parallel to one another, and are respectively arranged rotatably around the rotary shafts 11, 21, and 31.
  • plural disc-shaped protrusions 12 are provided on the rotary shaft 11 at a predetermined interval in the axial direction.
  • a predetermined interval is same in dimension as the thickness of cylindrical members (workpieces) 4 in the axial direction at the completion of processing.
  • the cylindrical members 4 are the targets to be rolling-formed.
  • the rolling processing device in the present embodiment is configured to set the above-described intervals of the protrusions 12A, 12B, and 12C, and has a function of limiting the workpieces 4 not to extend in the axial direction in a rolling process.
  • the protrusion 12B of the protrusions 12A, 12B, and 12C abuts with an outer peripheral surface 4b of the workpiece 4.
  • the protrusion 12B presses the outer peripheral surface of the mandrel 30 through the workpiece 4.
  • the forming roll 10 is arranged rotatably together with the mandrel 30 with the protrusion 12B abutting with the mandrel 30 through the workpiece 4.
  • the protrusions 12 can be integrally formed with the rotary shaft 11, the protrusions 12 as separate bodies may be fixed on the rotary shaft 11 in a method such as screwing, welding, or bonding.
  • the forming roll 10 having high strength and rigidity can be produced, but the manufacturing cost may be increased, because the forming roll 10 is manufactured by cutting or forging a cylindrical material having a large diameter.
  • the strength and rigidity are slightly lower than those of the protrusions 12 that are integrally formed, but the material cost and the processing cost can be reduced.
  • screwing even when a part of the forming roll 10 is damaged when used, its use can be continued by replacing only the damaged part.
  • the protrusions 12 of various sizes can be attached to the rotary shaft 11.
  • the forming roll 10 can be applied to various kinds and the manufacturing cost of annular members can be reduced.
  • the mandrel 30 has a cylindrical-shaped main body 30A having an outer diameter smaller than the inner diameter of the workpiece 4. It is to be noted that, in FIG. 1 , the rotary shaft 31 of the mandrel 30 also serves as the main body 30A.
  • inner peripheral surfaces 4a of three or more workpieces 4 abut with the main body 30A alternately in the radial direction of the mandrel 30, and the mandrel 30 is rotatable together with the forming roll 10 through the workpieces 4.
  • Plural disc-shaped protrusions 22 are provided on the support roll 20 at a predetermined interval in the axial direction.
  • the predetermined interval can be almost the same in dimension as the thickness of the cylindrical members (workpieces) 4 in the axial direction at the completion of processing.
  • Each of the protrusions 22A and 22B abuts with the outer peripheral surface 4b of the workpiece 4, and is arranged rotatably together with the rotary shaft 21.
  • the protrusions 22 can be integrally formed with the rotary shaft 21, the protrusions 22 as separate bodies may be fixed on the rotary shaft 21 in a method such as screwing, welding, or bonding.
  • protrusions 22 are integrally formed or separately formed are similar to those in the case of the forming roll 10.
  • the protrusions 12 of the forming roll 10 and the protrusions 22 of the support roll 20 may be integrally formed or separately formed, as necessary.
  • plural protrusions 12 and the plural protrusions 22 are provided depending on the number of the workpieces 4 .
  • n is the number of the workpieces 4
  • m is the number of the protrusions 12
  • k is the number of the protrusions 22
  • the protrusions 22A and 22B of the support roll 20 configured in this manner abut with the outer peripheral surface of the mandrel 30 through the workpieces 4, and are arranged rotatably together with the mandrel 30.
  • the position of one of the forming roll 10 or the support roll 20 is fixed, whereas the other includes an inherent drive source to be capable of performing translational motion actively.
  • the mandrel 30 is arranged to be capable of translating and rotating passively in accordance with a deformation of the workpieces 4. It is to be noted that each of the forming roll 10 and the support roll 20 includes a drive source for active rotation, which is not illustrated.
  • the present embodiment will be described under the presumption that the position of the rotary shaft 21 of the support roll 20 is fixed, the rotary shaft 11 of the forming roll 10 is arranged to be capable of performing translational motion by the above-described drive source, the mandrel 30 rotates passively in accordance with the deformation of the workpieces 4, and the rotary shaft 31 of the mandrel 30 is arranged to be capable of translating passively in accordance with the deformation of the workpieces 4.
  • Such a configuration eliminates the need of positional control, except for the forming roll 10.
  • the configuration of the rolling processing device 1 is simplified. It is to be noted that, in one variation, the mandrel 30 may be fixed, and the forming roll 10 and the support roll 20 may perform the translational motion toward the mandrel 30.
  • the forming roll 10 and the support roll 20 may be driven independently, or one of the rolls may be rotated and the other of the rolls and the mandrel may be rotated dependently.
  • the rolling processing method in the present embodiment includes at least an arranging process and a rolling process, and may include another process as necessary. In the present embodiment, there are some specific technical aspects in the arranging process.
  • plural (for example, three) workpieces 4 is arranged such that respective end surfaces of the protrusions 12 of the forming roll 10 and the protrusions 22 of the support roll 20 abut with the outer peripheral surfaces 4b of the plural workpieces 4.
  • the workpieces 4 are inserted into the mandrel 30.
  • plural (for example, three) workpieces 4 are arranged such that the inner peripheral surfaces 4a of the plural workpieces 4 are arranged alternately in the radial direction of the mandrel 30 with respect to the main body 30A of the mandrel 30, and the outer peripheral surfaces 4b of the workpieces 4 abut with the outer peripheral surfaces of the protrusions 12 and the protrusions 22.
  • a workpiece 4A and a workpiece 4B are arranged such that the outer peripheral surface of the protrusion 22A abuts with the outer peripheral surface 4b of the workpiece 4A, and one end surface of the protrusion 22A in the axial direction abuts with one end surface of the workpiece 4B in the axial direction.
  • the workpiece 4B and a workpiece 4C are arranged such that the outer peripheral surface of the protrusion 22B abuts with the outer peripheral surface 4b of the workpiece 4C, and one end surface of the protrusion 22B in the axial direction abuts with the other end surface of the workpiece 4B in the axial direction.
  • the workpiece 4B is arranged to be sandwiched between the protrusion 22A and the protrusion 22B in the axial direction to limit the movement in the axial direction.
  • the forming roll 10 is arranged such that one end surface of the protrusion 12A of the forming roll 10 abuts with one end surface (for example, upper end surface) of the workpiece 4A in the axial direction to limit the movement of the workpiece 4A in one (upward) direction.
  • the protrusion 12B is arranged such that the outer peripheral surface thereof abuts with the outer peripheral surface 4b of the workpiece 4B, one end surface thereof abuts with the other end surface (for example, lower end surface) of the workpiece 4A in the axial direction, and the other end surface thereof abuts with one end surface (for example, upper end surface) of the workpiece 4C in the axial direction.
  • This configuration limits the movement of the workpiece 4A in the other (downward) direction and the movement of the workpiece 4C in one (upward) direction.
  • the protrusion 12C abuts with the other end surface (for example, lower end surface) of the workpiece 4C in the axial direction, and is arranged to limit the movement of the workpiece 4C in the other (downward) direction.
  • the above-described rolling process is a rolling-forming process that extends the diameters of the workpieces 4A, 4B, and 4C, by the movement of the forming roll 10, to produce the annular members 2. Inner surfaces 4a of the workpieces 4A, 4B, and 4C alternately abut with an outer peripheral surface 30a of the main body 30A of the mandrel 30,.
  • the forming roll 10 is moved in a direction in which a distance between the rotary shaft 31 of the mandrel 30 and the rotary shaft 11 of the forming roll 10 reduces, by a drive source that is not illustrated, while rotating the protrusions 12A, 12B, and 12C of the forming roll 10 by the above-described drive source. Accordingly, the workpiece 4B is sandwiched between the protrusion 12B of the forming roll 10 and the outer surface 30a of the mandrel 30, and the workpiece 4B is rolled.
  • the protrusions 12A and 12C of the forming roll 10 abut with the outer peripheral surface 30a of the mandrel 30.
  • the forming roll 10 is further made to perform the translational motion, and the protrusions 12A and 12C of the forming roll 10 press the mandrel 30, so that the mandrel 30 performs rotation and translational motion passively, and the workpieces 4A and 4C sandwiched between the outer peripheral surface 30a of the mandrel 30 and the protrusions 22A and 22B of the support roll 20 are rolled.
  • the rolling force F exerted from the forming roll 10 is transmitted through a path of the forming roll 10, the workpiece 4B, the mandrel 30, the workpieces 4A and 4C, and the support roll 20, in this order.
  • the rolling force F is exerted to the workpiece 4B, and the rolling force F/2 is applied to each of the workpieces 4A and 4C.
  • the workpiece 4B deforms faster than the workpieces 4A and 4C.
  • the rolling by the protrusions 12A, 12B, and 12C is progressed, and the rolling-forming process of the workpieces 4A, 4B and 4C is completed when the thicknesses of the workpieces 4A, 4B and 4C in the radial direction reach predetermined thicknesses (see FIG. 3 ).
  • the workpieces 4 are arranged alternately in the radial direction with respect to the mandrel 30 in the present embodiment, so that the force alternately acts on the mandrel 30 as illustrated in FIG. 3 . Bending that occurs in the mandrel 30 can be reduced while forming the workpieces 4. This means that, in a configuration of a general rolling processing device, forming of workpieces plays the role of a support roll (a roll that presses a mandrel).
  • the inter-fulcrum distance D between the protrusions 22A and 22B of the support roll 20 is almost the same as the inter-fulcrum distance in the case where only a single workpiece 4 is rolling-processed.
  • almost the same force as that in the case where one workpiece 4 is rolling-formed is exerted to the mandrel 30 by the arrangement of the plural workpieces 4 in the present embodiment.
  • more workpieces 4 can be rolling-formed at the same time while preventing breakage of the mandrel 30.
  • the number of the workpieces 4 that are rolling-formed at the same time can be increased. For example, five workpieces 4 can be rolling-formed at the same time as illustrated in FIG. 4 . Even if still more workpieces 4 are formed at the same time, as illustrated in FIG. 4 , the workpieces 4 arranged alternately that are rolled suppress the bending that may occur in the mandrel 30. Accordingly, more workpieces 4 can be rolling-formed at the same time without worrying about the breakage of the mandrel 30.
  • the number of the workpieces 4 that are rolling-formed at the same time can be not odd numbers but even numbers.
  • two workpieces 4A and 4B can be rolling-formed at the same time.
  • the workpiece 4A and the workpiece 4B are arranged such that the outer peripheral surface of the protrusion 22A abuts with the outer peripheral surface 4b of the workpiece 4A, and one end surface of the protrusion 22A in the axial direction abuts with one end surface of the workpiece 4B in the axial direction.
  • the workpiece 4B is arranged such that one end surface of the protrusion 22B in the axial direction abuts with the other end surface of the workpiece 4B in the axial direction.
  • the workpiece 4B is arranged to be sandwiched between the protrusion 22A and the protrusion 22B in the axial direction to limit the movement in the axial direction.
  • the forming roll 10 is arranged such that one end surface of the protrusion 12A of the forming roll 10 abuts with one end surface (for example, upper end surface) of the workpiece 4A in the axial direction to limit the movement of the workpiece 4A in one (upward) direction.
  • the protrusion 12B is arranged such that the outer peripheral surface thereof abuts with the outer peripheral surface 4b of the workpiece 4B, and one end surface thereof abuts with the other end surface (for example, lower end surface) of the workpiece 4A in the axial direction. Accordingly, the movement of the workpiece 4A in the other (downward) direction is limited.
  • four workpieces 4A to 4D can be rolling-formed at the same time.
  • three disc-shaped protrusions 22 22A, 22B, and 22C are provided on the support roll 20 at predetermined intervals in the axial direction.
  • the workpiece 4A and the workpiece 4B are arranged such that the outer peripheral surface of the protrusion 22A abuts with the outer peripheral surface 4b of the workpiece 4A, and one end surface of the protrusion 22B in the axial direction abuts with one end surface of the workpiece 4B in the axial direction.
  • the workpiece 4B and the workpiece 4C are arranged such that the outer peripheral surface of the protrusion 22B abuts with the outer peripheral surface 4b of the workpiece 4C, and one end surface of the protrusion 22B in the axial direction abuts with the other end surface of the workpiece 4B in the axial direction.
  • the workpiece 4C and the workpiece 4D are arranged such that the outer peripheral surface of the protrusion 22B abuts with the outer peripheral surface 4b of the workpiece 4C, and one end surface of the protrusion 22C in the axial direction abuts with one end surface of the workpiece 4D in the axial direction.
  • the workpiece 4B is arranged to be sandwiched between the protrusion 22A and the protrusion 22B in the axial direction to limit the movement in the axial direction.
  • the workpiece 4D is arranged to be sandwiched between the protrusion 22B and the protrusion 22C in the axial direction to limit the movement in the axial direction.
  • the forming roll 10 is arranged such that one end surface of the protrusion 12A of the forming roll 10 in the axial direction abuts with one end surface (for example, upper end surface) of the workpiece 4A in the axial direction to limit the movement of the workpiece 4A in one (upward) direction.
  • the protrusion 12B is arranged such that the outer peripheral surface thereof abuts with the outer peripheral surface 4b of the workpiece 4B, one end surface thereof in the axial direction abuts with the other end surface (for example, lower end surface) of the workpiece 4A in the axial direction, and the other end surface thereof abuts with one end surface (for example, upper end surface) of the workpiece 4C in the axial direction.
  • the protrusion 12C is arranged such that the outer peripheral surface thereof abuts with the outer peripheral surface 4b of the workpiece 4D, and one end surface thereof in the axial direction abuts with one end surface (for example, upper end surface) of the workpiece 4C in the axial direction.
  • This configuration limits the movement of the workpiece 4A in the other (downward) direction and the movement of the workpiece 4C in one (upward) direction.
  • the protrusion 12C abuts with the other end surface (for example, lower end surface) of the workpiece 4C in the axial direction, and is arranged to limit the movement of the workpiece 4C in the other (downward) direction.
  • annular members can be produced by rolling-forming three or more cylindrical members at the same time while reducing the possibility of breakage of the mandrel. Accordingly, plural cylindrical members can be formed in a processing period of time almost the same as the conventional one, and the productivity can be drastically increased. In addition, in the present embodiment, plural workpieces can be rolling-formed at the same time without worrying about the breakage of a mandrel.
  • FIG. 6 is a cross-sectional view of a state where workpieces are set in the rolling processing device and the rolling processing method, in a second embodiment of the present invention.
  • a rolling processing device 1 of the present embodiment has a forming roll 10, a support roll 20, and a mandrel 30.
  • the forming roll 10, the support roll 20, and the mandrel 30 have rotary shafts 11, 21, 31 respectively arranged parallel to one another, and are respectively arranged rotatably around the rotary shafts 11, 21, 31.
  • plural disc-shaped protrusions 12 are provided on the rotary shaft 11 at predetermined intervals in the axial direction. It is preferable that the predetermined intervals have almost the same dimensions as the thickness dimensions of cylindrical members (workpieces) 4, which are targets to be rolling-formed, in the axial direction at the completion of processing.
  • the rolling processing device of the present embodiment which sets the intervals of the protrusions 12A, 12B, and 12C as described above, has a limiting function by which the workpieces 4 are not spread in the axial direction in a rolling process.
  • the protrusion 12B among the protrusions 12A, 12B, and 12C abuts with an outer peripheral surface 4b of the workpiece 4.
  • the protrusion 12B presses the outer peripheral surface of the mandrel 30 through the workpiece 4.
  • the forming roll 10 is arranged rotatably together with the mandrel 30 with the protrusion 12B thereof being in contact with the mandrel 30 through the workpiece 4.
  • the mandrel 30 includes a cylindrical-shaped main body 30A having an outer diameter smaller than the inner diameter of the workpiece 4, and a first engaging groove 32.
  • the diameter of the first engaging groove 32 decreases in the axial direction of the rotary shaft 31 of the mandrel 30. It is to be noted that, in FIG. 6 , the rotary shaft 31 of the mandrel 30 also serves as the main body 30A.
  • inner peripheral surfaces 4a of three or more of the workpieces 4 abut with the first engaging groove 32 alternately in the radial direction of the mandrel 30, and the mandrel 30 is rotatable together with the forming roll 10 through the workpieces 4.
  • a plural disc-shaped protrusions 22 are provided on the support roll 20 at a predetermined interval in the axial direction. It is preferable that the predetermined interval have almost the same dimension as the thickness dimensions of the cylindrical members (workpieces) 4, which are targets to be rolling-formed, in the axial direction at the completion of processing.
  • Each of the protrusions 22A and 22B abuts with the outer peripheral surface 4b of the workpiece 4, and is arranged rotatably together with the rotary shaft 21.
  • the plural protrusions 12 and the plural protrusions 22 are provided depending on the number of the workpieces 4.
  • the number of the workpieces 4 is n
  • the number of the protrusions 12 is m
  • the number of the protrusions 22 is k
  • the protrusions 22A and 22B of the support roll 20 configured in this manner abut with the outer peripheral surface of the mandrel 30 through the workpieces 4 and are arranged rotatably together with the mandrel 30.
  • the position of one of the forming roll 10 and the support roll 20 is fixed, and the other has an inherent drive source and can perform translational motion actively.
  • the mandrel 30 is arranged to be capable of performing rotation and translational motion passively in accordance with the deformation of the workpieces 4.
  • the position of the rotary shaft 21 of the support roll 20 is fixed, the rotary shaft 11 of the forming roll 10 is arranged to be capable of performing translational motion by the above-described drive source, and the mandrel 30 is arranged to be capable of performing rotation and translational motion passively in accordance with the deformation of the workpieces 4.
  • the configuration of the rolling processing device 1 is simplified.
  • the position of the mandrel 30 is fixed, and the forming roll 10 and the support roll 20 translationally move toward the mandrel 30 may be adopted.
  • the forming roll 10 and the support roll 20 may be driven independently, or a variation in which one of the rolls is rotated, and the other roll and the mandrel are rotated dependently may be used.
  • the rolling processing method of the present embodiment includes at least an arranging process and a rolling process, and may include another process as necessary.
  • the present embodiment has a specific technical feature in the arranging process.
  • the above-described arranging process is a process for arranging plural (for example, three) workpieces 4 such that respective end surfaces of the protrusions 12 of the forming roll 10 and the protrusions 22 of the support roll 20 abut with the outer peripheral surfaces 4b of the plural workpieces 4 into which the mandrel 30 is inserted.
  • the arranging process of the present embodiment is a process for arranging the plural (for example, three) workpieces 4 such that the inner peripheral surfaces 4a of the plural workpieces 4 are alternated in the radial direction of the mandrel 30 with respect to the first engaging groove 32 of the mandrel 30, and the outer peripheral surfaces 4b of the workpieces 4 abut with the outer peripheral surfaces of the protrusions 12 and the protrusions 22.
  • a workpiece 4A is arranged such that the outer peripheral surface of the second engaging groove 23A is engaged with the outer peripheral surface 4b of the workpiece 4A, and an end surface of the second engaging groove 23A in the axial direction is engaged with one end surface of the workpiece 4A in the axial direction.
  • a workpiece 4C is arranged such that the outer peripheral surface of the second engaging groove 23A is engaged with the outer peripheral surface 4b of the workpiece 4C, and an end surface of the second engaging groove 23A in the axial direction is engaged with one end surface of the workpiece 4C in the axial direction.
  • the workpiece 4B is arranged to be sandwiched between the protrusion 22A and the protrusion 22B in the axial direction to limit the movement in the axial direction.
  • the forming roll 10 is arranged such that one end surface of the protrusion 12A of the forming roll 10 abuts with one end surface (for example, upper end surface) of the workpiece 4A in the axial direction to limit the movement of the workpiece 4A in one (upward) direction.
  • the protrusion 12B is arranged such that the outer peripheral surface thereof abuts with the outer peripheral surface 4b of the workpiece 4B, one end surface thereof abuts with the other end surface (for example, lower end surface) of the workpiece 4A in the axial direction, and the other end surface thereof abuts with one end surface (for example, upper end surface) of the workpiece 4C in the axial direction.
  • the protrusion 12C is arranged such that one end surface thereof abuts with the other end surface (for example, lower end surface) of the workpiece 4C in the axial direction to limit the movement of the workpiece 4C in the other (downward) direction.
  • the above-described rolling process is a rolling-forming process that expands the diameters of the workpieces 4A, 4B, and 4C having inner peripheral surfaces 4a abutting with an outer peripheral surface 30a of the first engaging part 32 of the mandrel 30 alternately, by the movement of the forming roll 10, to produce annular members 2.
  • the forming roll 10 is moved in a direction in which a distance between the rotary shaft 31 of the mandrel 30 and the rotary shaft 11 of the forming roll 10 is reduced, by a drive source that is not illustrated, while rotating the protrusions 12A, 12B, and 12C of the forming roll 10 by the above-described drive source. Accordingly, the workpiece 4B is sandwiched between the protrusion 12B of the forming roll 10 and the outer peripheral surface 30a of the mandrel 30, and the workpiece 4B is rolled.
  • the protrusions 12A and 12C of the forming roll 10 abut with the outer peripheral surface 30a of the mandrel 30.
  • the forming roll 10 is further made to perform translational motion, and the protrusions 12A and 12C of the forming roll 10 press the mandrel 30, so that the mandrel 30 performs rotation and translational motion passively, and the workpieces 4A and 4C sandwiched between the outer peripheral surface 30a of the mandrel 30 and the protrusions 22A and 22B of the support roll 20 are rolled.
  • the protrusion 12B of the forming roll 10 rolls the workpiece 4B with the outer peripheral surface thereof directly pressing the outer peripheral surface of the workpiece 4B.
  • the rolling force F from the forming roll 10 is transmitted through a path of the forming roll 10 ⁇ the workpiece 4B ⁇ the mandrel 30 ⁇ the workpieces 4A and 4C ⁇ the support roll 20.
  • the rolling force F is applied to the workpiece 4B, and the rolling force F/2 is applied to each of the workpieces 4A and 4C.
  • the workpiece 4B deforms faster than the workpieces 4A and 4C.
  • the rolling by the protrusions 12A, 12B, and 12C is progressed, and the rolling-forming process of the workpieces 4A, 4B, and 4C is completed when the thicknesses of the workpieces 4A, 4B, and 4C in the radial direction become predetermined thicknesses (see FIG. 8 ).
  • the workpieces 4 are arranged alternately in the radial direction with respect to the mandrel 30 in the present embodiment, so that the force alternately acts on the mandrel 30 as illustrated in FIG. 8 , and bending that occurs in the mandrel 30 can be reduced while forming the workpieces 4.
  • a support roll a roll that presses a mandrel
  • an inter-fulcrum distance D between the protrusions 22A and 22B of the support roll 20 is almost the same as an inter-fulcrum distance in the case where only one workpiece 4 is rolling-processed.
  • almost the same force as that in the case where one workpiece 4 is rolling-formed is applied to the mandrel 30 by the arrangement of the plural workpieces 4 in the present embodiment.
  • more workpieces 4 can be rolling-formed at the same time while preventing breakage of the mandrel 30.
  • the number of the workpieces 4 that are rolling-formed at the same time can be increased.
  • five workpieces 4 can be rolling-formed at the same time as illustrated in FIG. 9 .
  • second engaging grooves 13A and 13C that correspond to the first engaging groove 32 and are engaged with the outer peripheral surfaces 4b and end surfaces in the axial direction of the workpieces 4A and 4E are respectively provided at the protrusions 12A and 12C of the forming roll 10.
  • the second engaging grooves 13 (23) is selected depending on the number of the workpieces 4 to be processed.
  • the number of the workpieces 4 that are rolling-formed at the same time can be not odd numbers but even numbers.
  • two workpieces 4A and 4B can be rolling-formed at the same time.
  • the second engaging groove 23A is provided on the outer peripheral surface of the protrusion 22A, the workpiece 4A is arranged such that the outer peripheral surface of the second engaging groove 23A is engaged with the outer peripheral surface 4b of the workpiece 4A, and an end surface of the second engaging groove 23A in the axial direction is engaged with one end surface of the workpiece 4A in the axial direction.
  • the workpiece 4B is arranged to be sandwiched between the protrusion 22A and the protrusion 22B in the axial direction to limit the movement in the axial direction.
  • the forming roll 10 is arranged such that one end surface of the protrusion 12A of the forming roll 10 abuts with one end surface (for example, upper end surface) of the workpiece 4A in the axial direction to limit the movement of the workpiece 4A in one (upward) direction.
  • the protrusion 12B is arranged such that the outer peripheral surface thereof abuts with the outer peripheral surface 4b of the workpiece 4B, and one end surface thereof abuts with the other end surface (for example, lower end surface) of the workpiece 4A in the axial direction. Accordingly, the movement of the workpiece 4A in the other (downward) direction is limited.
  • a second engaging groove 13B that corresponds to the first engaging groove 32 and is engaged with the outer peripheral surface 4b and the other end surface in the axial direction of the workpiece 4B is provided. Accordingly, the movement of the workpiece 4B in the other (downward) direction is limited.
  • four workpieces 4A to 4D can be rolling-formed at the same time.
  • three disc-shaped protrusions 22 22A, 22B, and 22C are provided on the support roll 20 at predetermined intervals in the axial direction.
  • the second engaging groove 23A that corresponds to the first engaging groove 32 and is engaged with the outer peripheral surface 4b and one end surface (for example, upper end surface) in the axial direction of the workpiece 4A is provided.
  • three disc-shaped protrusions 12 (12A, 12B, and 12C) are provided on the forming roll 10 at predetermined intervals in the axial direction.
  • the second engaging groove 13C that corresponds to the first engaging groove 32 and is engaged with the outer peripheral surface 4b and the other end surface (for example, lower end surface) in the axial direction of the workpiece 4D is provided.
  • the workpiece 4A is arranged such that the outer peripheral surface of the second engaging groove 23A is engaged with the outer peripheral surface 4b of the workpiece 4A, and an end surface of the second engaging groove 23A in the axial direction is engaged with one end surface of the workpiece 4A in the axial direction.
  • the workpiece 4A is arranged to be sandwiched between the protrusion 12A and the protrusion 12B in the axial direction to limit the movement in the axial direction.
  • the workpiece 4B is arranged to be sandwiched between the protrusion 22A and the protrusion 22B in the axial direction to limit the movement in the axial direction.
  • the workpiece 4C is arranged to be sandwiched between the protrusion 22A and the protrusion 22B in the axial direction to limit the movement in the axial direction.
  • the workpiece 4D is arranged such that the outer peripheral surface of the second engaging groove 13C is engaged with the outer peripheral surface 4b of the workpiece 4D, and an end surface of the second engaging groove 13C in the axial direction is engaged with the other end surface of the workpiece 4D in the axial direction.
  • the workpiece 4D is arranged to be sandwiched between the protrusion 22B and the protrusion 22C in the axial direction to limit the movement in the axial direction.
  • annular members can be produced by rolling-forming three or more cylindrical members at the same time while reducing the possibility of breakage of a mandrel. Accordingly, plural cylindrical members can be formed in processing time almost the same as the conventional processing time, and the productivity can be drastically increased. In addition, according to the present embodiment, plural workpieces can be rolling-formed at the same time without worrying about breakage of a mandrel.
  • the workpieces 4 can be prevented from increasing the widths while the workpieces 4 are being deformed by the first engaging groove 32 provided on the mandrel 30 and the second engaging grooves 13 (23) provided on at least one of the forming roll 10 and the support roll 20.
  • first engaging groove 32 and the second engaging grooves 13 (23) are provided to improve the workability when the workpieces 4 are set in the mandrel 30 in the above-described arranging process, and to improve the positioning accuracy of the workpieces 4 in the axial direction.
  • FIG. 11A and FIG. 11B are cross-sectional views of a processing outline of annular members the rolling processing device and the rolling processing method, in the third embodiment of the present invention.
  • plural first engaging grooves 32 are provided depending on the number of the workpieces 4. Specifically, the first engaging groove 32 with which all of the inner peripheral surfaces 4a of the workpieces 4A, 4B, and 4C abut does not have one groove shape that is flush in the axial direction, but plural reduced-diameter first engaging grooves 32A, 32B, and 32C are provided on the main body 30A independently.
  • the second engaging groove 13B that corresponds to the first engaging groove 32B and is engaged with the outer peripheral surface 4b and both end surfaces in the axial direction of the workpiece 4B is provided.
  • the second engaging grooves 23A and 23B that correspond to the first engaging grooves 32A and 32C and are engaged with the outer peripheral surfaces 4b and both end surfaces in the axial direction of the workpieces 4A and 4C are provided.
  • the workpieces 4 may extend in the axial direction in addition to expanding of the diameters, depending on rolling conditions, and the present embodiment is provided for solving such a situation.
  • the second engaging grooves 12B, 23A, and 23B are provided as in the present embodiment, so that extending of the workpieces 4 in the axial direction can be suppressed. Therefore, it is possible to provide a rolling processing device that rolling-forms plural workpieces at the same time with higher accuracy, while keeping an inter-fulcrum distance D small, and a rolling processing method using the above-described rolling processing device.
  • the number of the workpieces 4 that are rolling-formed at the same time can be not odd numbers but even numbers.
  • two workpieces 4A and 4B can be rolling-formed at the same time.
  • the plural first engaging grooves 32 are provided depending on the number of the workpieces 4.
  • the first engaging groove 32 with which all of the inner peripheral surfaces 4a of the workpieces 4A and 4B abut does not have one groove shape that is flush in the axial direction, but plural reduced-diameter first engaging grooves 32A, 32B are provided on the main body 30A independently.
  • the second engaging groove 13B that corresponds to the first engaging groove 32B and is engaged with the outer peripheral surface 4b and both end surfaces in the axial direction of the workpiece 4B is provided.
  • the second engaging groove 23A that corresponds to the first engaging groove 32A and is engaged with the outer peripheral surface 4b and both end surfaces in the axial direction of the workpiece 4A is provided. It is to be noted that, on the protrusion 22B of the support roll 20, the second engaging groove 23B as illustrated in FIG. 11 is not provided.
  • four workpieces 4A to 4D can be rolling-formed at the same time.
  • three disc-shaped protrusions 22 22A, 22B, and 22C are provided on the support roll 20 at predetermined intervals in the axial direction.
  • the protrusion 22A includes the second engaging groove 23A that corresponds to the first engaging groove 32A and is engaged with the outer peripheral surface 4b and both end surfaces in the axial direction of the workpiece 4A.
  • the protrusion 22B includes the second engaging groove 23B that corresponds to the first engaging groove 32C and that is engaged with the outer peripheral surface 4b and both end surfaces in the axial direction of the workpiece 4C.
  • three disc-shaped protrusions 12 (12A, 12B, and 12C) are provided on the forming roll 10 at predetermined intervals in the axial direction.
  • the second engaging groove 13B that corresponds to the first engaging groove 32B and is engaged with the outer peripheral surface 4b and both end surfaces in the axial direction of the workpiece 4B is provided.
  • the second engaging groove 13C that corresponds to the first engaging groove 32D and is engaged with the outer peripheral surface 4b and both end surfaces in the axial direction of the workpiece 4D is provided.
  • the workpiece 4A is arranged such that the outer peripheral surface of the second engaging groove 23A is engaged with the outer peripheral surface 4b of the workpiece 4A, and end surfaces of the second engaging groove 23A in the axial direction are engaged with both end surfaces of the workpiece 4A in the axial direction.
  • the workpiece 4A is arranged to be sandwiched between the protrusion 12A and the protrusion 12B in the axial direction to limit the movement in the axial direction.
  • the workpiece 4B is arranged such that the outer peripheral surface of the second engaging groove 13B is engaged with the outer peripheral surface 4b of the workpiece 4B, and end surfaces of the second engaging groove 13B in the axial direction are engaged with both end surfaces of the workpiece 4B in the axial direction.
  • the workpiece 4B is arranged to be sandwiched between the protrusion 22A and the protrusion 22B in the axial direction to limit the movement in the axial direction.
  • the workpiece 4C is arranged such that the outer peripheral surface of the second engaging groove 23B is engaged with the outer peripheral surface 4b of the workpiece 4C, and end surfaces of the second engaging groove 23B in the axial direction are engaged with both end surfaces of the workpiece 4C in the axial direction.
  • the workpiece 4C is arranged to be sandwiched between the protrusion 12B and the protrusion 12C in the axial direction to limit the movement in the axial direction.
  • the workpiece 4D is arranged such that the outer peripheral surface of the second engaging groove 13C is engaged with the outer peripheral surface 4b of the workpiece 4D, and end surfaces of the second engaging groove 13C in the axial direction are engaged with both end surfaces of the workpiece 4D in the axial direction.
  • the workpiece 4D is arranged to be sandwiched between the protrusion 22B and the protrusion 22C in the axial direction to limit the movement in the axial direction.
  • processing may be performed with the number of workpieces decreased by one.
  • a rolling processing device in which the number of workpieces is five four workpieces the number of which is smaller than the five by one can be rolling-formed at the same time.
  • FIG. 13 and FIG. 14 are cross-sectional views of a processing outline of annular members in the rolling processing device and the rolling processing method, in the fourth embodiment of the present invention.
  • pairs of rotating bodies 50 that bias both end surfaces of the workpieces 4 in the axial direction are provided on the forming roll 10 and the support roll 20.
  • the rotating bodies 50 each have a rotary shaft, and are radially and rotatably arranged on end surfaces of the protrusions 12 and the protrusions 22 in the axial direction, which are opposed to one another in the axial direction.
  • the rotating bodies 50 may be arranged on at least one of the forming roll 10 and the support roll 20, and are preferably arranged on the forming roll 10 and the support roll 20.
  • the workpieces 4 may extend in the axial direction in addition to expanding of the diameters, depending on rolling conditions, and the present embodiment is a variation for solving it, as in the third embodiment.
  • the workpiece 4B will be specifically described as an example. As illustrated in FIG. 14 , on the side where the inner peripheral surface 4a of the workpiece 4B abuts with the outer peripheral surface of the first engaging groove 32 of the mandrel 30, the workpiece 4B is sandwiched by the outer peripheral surface of the protrusion 12B in the radial direction.
  • both end surfaces of the workpiece 4B in the axial direction are sandwiched between the pair of rotating bodies 50B, 50B provided on the inner surface sides of the protrusions 22A and 22B in the axial direction, which are opposed to each other.
  • the friction force acting between the end surfaces of the workpieces 4 and the end surfaces of the protrusions 12 and the protrusions 22 can be reduced by providing the rotating bodies 50, so that the forming roll 10 and the support roll 20 are smoothly rotated, and the energy necessary for rolling processing can be reduced. Furthermore, damage such as seizure on the workpieces 4, the protrusions 12, and the protrusions 22 can be prevented.
  • the number of the workpieces 4 that are rolling-formed at the same time can be not odd numbers but even numbers.
  • two workpieces 4A and 4B can be rolling-formed at the same time.
  • two disc-shaped protrusions 22 22A and 22B are provided on the support roll 20 at a predetermined interval in the axial direction.
  • the second engaging groove 23A that corresponds to the first engaging groove 32 and is engaged with the outer peripheral surface 4b and one end surface (for example, upper end surface) in the axial direction of the workpiece 4A is provided.
  • two disc-shaped protrusions 12 (12A, 12B) are provided on the forming roll 10 at a predetermined interval in the axial direction.
  • the workpiece 4A is arranged such that the outer peripheral surface of the second engaging groove 23A is engaged with the outer peripheral surface 4b of the workpiece 4A, and an end surface of the second engaging groove 23A in the axial direction is engaged with one end surface of the workpiece 4A in the axial direction.
  • the workpiece 4A is arranged to be sandwiched between the protrusion 12A and the protrusion 12B in the axial direction to limit the movement in the axial direction.
  • both end surfaces of the workpiece 4A in the axial direction are sandwiched between the pair of rotating bodies 50A, 50A provided on the inner surface sides of the protrusions 12A, 12B in the axial direction, which are opposed to each other.
  • both end surfaces of the workpiece 4B in the axial direction are sandwiched between the pair of rotating bodies 50B, 50B provided on the inner surface sides of the protrusions 22A and 22B in the axial direction, which are opposed to each other.
  • four workpieces 4A to 4D can be rolling-formed at the same time.
  • three disc-shaped protrusions 22 22A, 22B, and 22C are provided on the support roll 20 at predetermined intervals in the axial direction.
  • the second engaging groove 23A that corresponds to the first engaging groove 32 and is engaged with the outer peripheral surface 4b and one end surface in the axial direction of the workpiece 4A is provided.
  • three disc-shaped protrusions 12 (12A, 12B, and 12C) are provided on the forming roll 10 at predetermined intervals in the axial direction.
  • pairs of rotating bodies 50 that bias both end surfaces of the workpieces 4 in the axial direction are provided on the forming roll 10 and the support roll 20.
  • the rotating bodies 50 each have a rotary shaft, and are radially and rotatably arranged on end surfaces of the protrusions 12 and the protrusions 22 in the axial direction, which are opposed to one another in the axial direction.
  • the rotating bodies 50 may be arranged on at least one of the forming roll 10 and the support roll 20, and are preferably arranged on the forming roll 10 and the support roll 20.
  • the workpiece 4A is arranged such that the outer peripheral surface of the second engaging groove 23A is engaged with the outer peripheral surface 4b of the workpiece 4A, and an end surface of the second engaging groove 23A in the axial direction is engaged with one end surface of the workpiece 4A in the axial direction.
  • the workpiece 4A is arranged to be sandwiched between the protrusion 12A and the protrusion 12B in the axial direction to limit the movement in the axial direction.
  • both end surfaces of the workpiece 4A in the axial direction are sandwiched between the pair of rotating bodies 50A, 50A provided on the inner surface sides of the protrusions 12A, 12B in the axial direction, which are opposed to each other.
  • both end surfaces of the workpiece 4B in the axial direction are sandwiched between the pair of rotating bodies 50B, 50B provided on the inner surface sides of the protrusions 22A and 22B in the axial direction, which are opposed to each other.
  • both end surfaces of the workpiece 4C in the axial direction are sandwiched between the pair of rotating bodies 50C, 50C provided on the inner surface sides of the protrusions 22A and 22B in the axial direction, which are opposed to each other.
  • both end surfaces of the workpiece 4D in the axial direction are sandwiched between the pair of rotating bodies 50D, 50D provided on the inner surface sides of the protrusions 22B, 22C in the axial direction, which are opposed to each other.
  • processing may be performed with the number of workpieces decreased by one.
  • a rolling processing device in which the number of workpieces is five four workpieces the number of which is smaller than the five by one can be rolling-formed at the same time.
  • the rolling processing device and the rolling processing method according to the present invention have been described, the rolling processing device and the rolling processing method according to the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention as defined by the appended claims.
  • the first engaging groove is provided on the mandrel in the above-described embodiments, but if plural workpieces can be held without the first engaging groove, it is not necessary to provide the first engaging groove.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Forging (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Claims (8)

  1. Walzverarbeitungsvorrichtung (1) umfassend:
    eine Formwalze (20), die so konfiguriert ist, dass sie an einer äußeren Umfangsfläche eines zylindrischen Elements (4) anliegt;
    eine Stützwalze (10), die so konfiguriert ist, dass sie an die äußere Umfangsfläche des zylindrischen Elements (4) anliegt; und
    einen Dorn (30) mit einer äußeren Umfangsfläche, die so konfiguriert ist, dass sie an einer inneren Umfangsfläche des zylindrischen Elements (4) anliegt,
    wobei Drehwellen (11, 21, 31) der Formwalze (20), der Stützwalze (10) und des Dorns (30) so angeordnet sind, dass sie sich einander annähern können,
    dadurch gekennzeichnet, dass
    der Dorn (30) derart konfiguriert ist, dass mindestens drei der zylindrischen Elemente (4) an der äußeren Umfangsfläche des Dorns (30) angeordnet werden können, so dass die inneren Umfangsflächen der mindestens drei zylindrischen Elemente (4) an dem Dorn (30) abwechselnd in radialer Richtung des Dorns (30) aneinander anliegen,
    wobei eine Mehrzahl von Vorsprüngen (12, 22), von denen jeder eine Scheibenform hat, auf der Formwalze (20) und der Stützwalze (10) abhängig von der Anzahl der zu walzenden zylindrischen Elemente (4) vorgesehen sind, und
    wobei die Vorrichtung (1) derart konfiguriert ist, dass im Betrieb jeweilige äußere Umfangsflächen der Mehrzahl von Vorsprüngen (12, 22) der Formwalze (20) und der Stützwalze (10) gegen die äußere Umfangsfläche der abwechselnd angeordneten zylindrischen Elemente (4) gedrückt werden.
  2. Walzverarbeitungsvorrichtung (1) nach Anspruch 1, wobei mindestens eine erste Eingriffsnut (32) mit einem verringerten Durchmesser in einer axialen Richtung auf der äußeren Umfangsfläche des Dorns (30) der ersten Eingriffsnut (32) vorgesehen ist, die einen Durchmesser aufweist, der in einer axialen Richtung des Dorns (30) abnimmt, und der so konfiguriert ist, dass er abwechselnd an den Innenumfangsflächen der drei oder mehr der zylindrischen Teile (4) in der radialen Richtung des Dorns (30) anliegt.
  3. Walzverarbeitungsvorrichtung (1) nach Anspruch 2, wobei eine zweite Eingriffsnut (13, 23) an der äußeren Umfangsfläche von mindestens einem der Mehrzahl von Vorsprüngen (12, 22) der Formwalze (20) oder der Stützwalze (10) vorgesehen ist, um mit der äußeren Umfangsfläche des zylindrischen Elements (4) und einer Endfläche in der axialen Richtung des zylindrischen Elements (4) in Eingriff zu kommen, um der ersten Eingriffsnut (32) zu entsprechen.
  4. Walzverarbeitungsvorrichtung (1) nach Anspruch 2 oder 3, wobei eine Mehrzahl der ersten Eingriffsnuten (32) in Abhängigkeit von der Anzahl der zylindrischen Elemente (4) vorgesehen ist.
  5. Walzverarbeitungsvorrichtung (1) nach einem der Ansprüche 1 bis 4, wobei ein Paar von rotierenden Körpern (50) an mindestens einer der Formwalze (20) oder der Stützwalze (10) vorgesehen sind, um in Bezug auf die Formwalze (20) bzw. die Stützwalze (10) drehbar angeordnet zu sein, die einander in der axialen Richtung gegenüberliegen, und dahingehend konfiguriert sind, beide Endoberflächen des zylindrischen Teils (4) in der axialen Richtung vorzuspannen.
  6. Walzverarbeitungsverfahren, umfassend:
    einen Anordnungsvorgang zum Anordnen eines zylindrischen Elements (4) in einer Walzbearbeitungsvorrichtung (1), die eine Formwalze (20) umfasst, die so konfiguriert ist, dass sie mit einer äußeren Umfangsfläche des zylindrischen Elements (4) in Anlage kommt; eine Stützwalze (10), die dahingehend konfiguriert ist, an der Außenumfangsfläche des zylindrischen Elements (4) anzuliegen, und einen Dorn (30) mit einer Außenumfangsfläche, die dahingehend konfiguriert ist, an einer Innenumfangsfläche des zylindrischen Elements (4) anzuliegen, wobei Drehwellen (11, 21, 31) der Formwalze (20), der Stützwalze (10) und des Dorns (30) so angeordnet sind, dass sie sich einander annähern können;
    gekennzeichnet durch
    einen Walzformvorgang zum Walzformen des zylindrischen Elements (4), um einen Durchmesser des zylindrischen Elements (4) unter Verwendung der Formwalze (20) und des Dorns (30) aufzuweiten, um ringförmige Elemente (2) zu erzeugen,
    wobei der Anordnungsvorgang ein Vorgang zum Anordnen von mindestens drei der zylindrischen Elemente (4) in einer axialen Richtung des Dorns (30) in Bezug auf eine erste Eingriffsnut (32) ist, die an der äußeren Umfangsfläche des Dorns (30) derart vorgesehen ist, dass die inneren Umfangsflächen der mindestens drei der zylindrischen Elemente (4) abwechselnd mit der äußeren Umfangsfläche des Dorns (30) in einer radialen Richtung des Dorns (30) und jeweiligen äußeren Umfangsfläche der Vorsprünge (12, 22), der Formwalze (20) und der Stützwalze (10) an der äußeren Umfangsfläche des zylindrischen Elements (4) anliegt.
  7. Walzverarbeitungsverfahren nach Anspruch 6, wobei eine Mehrzahl der ersten Eingriffsnuten (32) in Abhängigkeit von der Anzahl der zylindrischen Elemente (4) vorgesehen ist.
  8. Walzverarbeitungsverfahren nach Anspruch 6 oder 7, wobei ein Paar von rotierenden Körpern (50) auf wenigstens einer von der Formwalze (20) oder der Stützwalze (10) vorgesehen ist, um drehbar in Bezug auf die Formwalze (20) beziehungsweise die Stützwalze (10) angeordnet zu werden, die einander in der axialen Richtung gegenüberliegen, welche dahingehend konfiguriert sind, beide Endoberflächen des zylindrischen Teils (4) in der axialen Richtung vorzuspannen.
EP15761174.0A 2014-03-12 2015-03-09 Walzvorrichtung und walzverfahren Active EP3117921B1 (de)

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JP2014049208 2014-03-12
PCT/JP2015/001271 WO2015136911A1 (ja) 2014-03-12 2015-03-09 ローリング加工装置及びローリング加工方法

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CN108555197A (zh) * 2018-05-03 2018-09-21 江苏翔能科技发展有限公司 单片制坯多片组合成型工艺及适用其的制坯装置和成型模具
KR101950471B1 (ko) * 2018-05-16 2019-02-20 류동선 금속부품의 표면가공장치 및 이를 이용한 이단볼 스터드용 표면가공장치
CN108637719B (zh) * 2018-06-14 2023-08-29 浙江工业大学 狗骨头试样滚压加工的支撑装置

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FR2474906A1 (fr) * 1980-02-04 1981-08-07 Sacilor Procede de logement, par emboitage, d'une pluralite de cannelures refouleuses differentes sur un seul jeu de cylindres d'une cage refouleuse d'un laminoir universel a poutrelles, a rails ou autres profils similaires, ainsi que cylindres, cages et laminoirs
DE19634927C2 (de) * 1996-08-29 1999-12-16 Freudenberg Carl Fa Verfahren zur gleichzeitigen Aufweitung zumindest eines Paars ringförmiger Rohlinge
DE19920163A1 (de) * 1999-04-28 2000-11-02 Schiller Walz Und Werkzeugtech Verfahren und Vorrichtung zum Herstellen ringförmiger Werkstücke durch Kaltumformen
JP2006320927A (ja) * 2005-05-18 2006-11-30 Daido Steel Co Ltd テーパベアリングの製造方法およびその製造装置
CN101176903B (zh) * 2007-09-06 2010-05-19 刘岷 内外球面金属环件的冷辗扩加工方法及其装置
CN202105954U (zh) * 2011-04-26 2012-01-11 平高集团有限公司 一种铝合金法兰径向辗制模具
ITTO20120267A1 (it) * 2012-03-26 2013-09-27 Skf Ab Attrezzatura per la realizzazione per rullaturura di un elemento anulare di forma complessa, in particolare un inserto in acciaio per un anello esterno di un cuscinetto di rotolamento

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EP3117921A1 (de) 2017-01-18
JP6202193B2 (ja) 2017-09-27
EP3117921A4 (de) 2017-04-12
CN105916610A (zh) 2016-08-31
JPWO2015136911A1 (ja) 2017-04-06
US20160368041A1 (en) 2016-12-22
WO2015136911A1 (ja) 2015-09-17
CN105916610B (zh) 2018-05-25

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