EP3117916A1 - Dispositif destine à l'usinage d'un tube - Google Patents

Dispositif destine à l'usinage d'un tube Download PDF

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Publication number
EP3117916A1
EP3117916A1 EP15176694.6A EP15176694A EP3117916A1 EP 3117916 A1 EP3117916 A1 EP 3117916A1 EP 15176694 A EP15176694 A EP 15176694A EP 3117916 A1 EP3117916 A1 EP 3117916A1
Authority
EP
European Patent Office
Prior art keywords
support roller
tube
holding device
outer part
screw
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.)
Granted
Application number
EP15176694.6A
Other languages
German (de)
English (en)
Other versions
EP3117916B1 (fr
Inventor
Gerhard Pieper
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.)
TRANSFLUID MASCHB GmbH
Transfluid Maschinenbau GmbH
Original Assignee
TRANSFLUID MASCHB GmbH
Transfluid Maschinenbau GmbH
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 TRANSFLUID MASCHB GmbH, Transfluid Maschinenbau GmbH filed Critical TRANSFLUID MASCHB GmbH
Priority to EP15176694.6A priority Critical patent/EP3117916B1/fr
Publication of EP3117916A1 publication Critical patent/EP3117916A1/fr
Application granted granted Critical
Publication of EP3117916B1 publication Critical patent/EP3117916B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge
    • B21D19/04—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers
    • B21D19/046—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers for flanging edges of tubular products

Definitions

  • the invention relates to a device for processing a freely accessible wall region of a rotatably clamped in a clamping device tube.
  • Such devices are basically known in the art, for. B. from the German utility model DE 297 20 321 U1 ,
  • This utility model patent discloses a device for forming a pipe end with a clamping device for frictionally holding the pipe by means of compressive stress.
  • the clamping device has distributed over a circumference conical clamping wedges which are slidably guided in a conical bore of a clamping sleeve.
  • the clamping wedges are equipped with clamping jaws, which is associated with a forming tool at the area of a comparatively larger diameter of the clamping sleeve. Hydraulic power means are used to carry out a relative movement between the forming tool and the clamping device.
  • a device for introducing a sickle-like indentation in a freely accessible wall region of a rotatably clamped in a clamping device tube known.
  • the device has a rotatably mounted drive shaft with an end facing the clamping device, wherein the drive shaft is aligned such that its longitudinal axis aligned with the tube axis of the clamped tube.
  • the device further comprises a first drive means for rotationally driving the drive shaft.
  • the known device has a tool head, which is rotatably mounted on the clamping device facing the free end of the drive shaft.
  • a holding device is mounted for a forming tool, for example, a réellerollierdorn, for forming the tube.
  • a forming tool for example, a réellerollierdorn
  • at least one radially displaceable support roller holding device is arranged for holding a freely rotatable support roller.
  • the support roller serves to unroll on the outside of the freely accessible wall portion of the tube.
  • three of the support roller retainers are provided, all of which extend radially and are each offset by an angle of 120 ° in the circumferential direction. This arrangement causes the freely accessible wall portion of the tube to be supported by the support rollers, which roll during operation of the device on the outside of the freely accessible wall portion of the tube during its processing by the forming tool.
  • the invention has the object of developing a known device for processing a pipe to the effect that the system of the support rollers on the outside of the freely accessible wall region of the pipe is further improved.
  • the compression spring provided according to the invention advantageously has the effect that the inner part of the support roller holding device, and thus also the support roller, supported against the outer part, is always pressed against the outside of the tube by a biasing force generated by the compression spring.
  • the bias ensures a bearing of the support roller on the outside of the tube, even if the outside of the tube is not quite round or if the support roller holding device is not quite symmetrical, d. H. not completely coaxial with the outside of the tube rotates.
  • the inner and the outer part of the support roller holding device are connected to one another via a screw.
  • the screw is firmly screwed from radially inward to radially outward into the outer part of the support roller holding device, however, the inner part of the support roller holding device is not pressed against the outer part even when the screw is tightened. Rather, the shank of the screw is designed so long that a clearance between the inner and outer part remains in the radial direction. The shank of the screw serves to guide the inner part in the radial direction.
  • the inner part is on the shaft - in the context of the game - freely movable movable. Radially inward, the head of the screw serves as a stop or travel limit for the inner part. After radially outward, the upper part of the support roller holding device serves as a stop or travel limit for the inner part.
  • the holes for the screw in the inner and / or the outer part of the support roller holding device locally, ie widened in sections to receive the compression spring coaxial with the screw.
  • the local widenings of the bore extend in the radial direction only so far that the compression spring is always under tension to ensure the desired bias between the outer and the inner part of the support roller holding device.
  • a cup-shaped conical guide head is provided in the device according to the invention, which is mounted coaxially and rotationally fixed but axially displaceable on the drive shaft and opened to the clamping device.
  • the outer part of the support roller holding device has on its radial outer side a sliding surface with at least one conical portion for sliding along on the inside of the wall of the conical guide head. Due to the conical design of the guide head causes its axial displacement, the formation of a force component in the radial direction of the support roller holding device. This is especially true when the support roller holding device is made with the sliding surface at its outer part against the inside of the wall of the guide head radially and biased.
  • Serves provided in the inventive device further compression spring which is supported with its one end to a stop on the holding device and with its other end to a stop on the outer part of the support roller holding device or clamped between these attacks under bias.
  • the support roller is freely rotatably mounted on the longitudinal axis of the device facing side of the inner part of the support roller holding device axially parallel to the drive shaft.
  • the freely rotatable mounting allows the support roller to roll on the wall of the free end of the tube to be reshaped as the device rotates about its longitudinal axis to process the tube.
  • the outer part of the support roller holding device is guided in the axial direction when sliding along on the inner wall of the guide head.
  • the wall of the guide head on its inside in at least one circumferential angle region, a guide surface extending in the axial direction with at least one conical section.
  • FIG. 1 shows a longitudinal section through the inventive device 100.
  • the device is used to edit a free end, more specifically a freely accessible wall portion of a rotatably clamped in a clamping device 110 tube 200.
  • the longitudinal axis of the tube is in the FIG. 1 denoted by the reference R.
  • the device itself comprises a rotatably mounted drive shaft 120, which is aligned with its longitudinal axis L so that it is aligned with the tube axis R.
  • the drive shaft is rotationally driven by means of a drive device 130.
  • a tool head 150 is rotatably mounted on the drive shaft.
  • the clamping device facing end face of the tool head this carries a holding device 180 for a forming tool for forming the tube.
  • the forming tool is preferably an inner roller mandrel for the frontal insertion into the tube 200 and for introducing a desired indentation into the wall of the tube. For the réellerollierdorn on a corresponding profiling on its outside.
  • the support roller holder 160 serves to support a freely rotatable support roller 162 for supporting the freely accessible wall portion of the clamped tube 200 during its processing by the inner roller mandrel.
  • the device according to the invention thereby rotates around the free end of the tube, and the support roller rolls on the outside of the freely accessible wall region of the tube 200.
  • the support roller holder 160 is divided according to the invention in the radial direction, namely in a radially inner portion 160-2 for holding the support roller 162 and a radially outer Part 160-1.
  • the two parts are preferably connected to one another via a screw while maintaining a predetermined clearance.
  • the screw connection is configured as follows:
  • the inner part 160-2 of the support roller holding device has a bore in the radial direction.
  • the screw 166 which is provided with a screw head and a shaft, is inserted from radially inward to radially outward through the bore of the inner part.
  • the inner diameter of the bore is smaller than the outer diameter of the screw head, so that the screw head serves as a stop for the inner part during a movement in the direction of the longitudinal axis L of the device 100.
  • the inner diameter of the bore in the inner part is slightly larger than the outer diameter of the shank of the screw, so that the inner part 160-2 of the support roller holder 160 is mounted freely displaceable on the shank of the screw.
  • the screw 166 With its end opposite the screw head, the screw 166 is screwed from radially inward to radially outward into the outer part 160-1 of the support roller holding device - while maintaining said play, at least in the unloaded state.
  • the bore in the inner part 160-1 and / or the further bore in the outer part 160-1 are preferably extended over a partial length or a portion of the shank of the screw for receiving a compression spring 190 between the inner and the outer part of the support roller holding device ,
  • This compression spring 190 is used for biasing the inner part against the outer part to a maximum distance 169, ie to a maximum clearance, wherein the inner part abuts against the screw head.
  • This biasing of the inner part, in conjunction with said play has the advantage that upon rotation of the device around the tube 200, abutment of the support roller 162 on the outside of the tube is ensured even if the longitudinal axis L of the device is not exactly flush with the tube axis R is aligned or if the tube is not exactly rotationally symmetrical. In these cases, imbalances in the rotation can occur, which can be compensated by the said bias in connection with the play. In other words, even in the presence of said asymmetries, the compression spring ensures due to the bias generated by her always a concern of the support roller on the outside of the tube 200th
  • the device 100 has a cup-shaped conical guide head 140, which is mounted coaxially and rotationally fixed, but axially displaceable on the drive shaft 120.
  • the guide head 140 is opened to the chuck 110.
  • the outer part 160 of the support roller holding device 160 has on its radial outer side a sliding surface 164 with at least one conical section 165, the conicity being preferably complementary to the conicity of the wall 142 of the guide head 140. By means of its sliding surface 164, the outer part 160-1 of the support roller holding device 160 slides along the inside of the wall 142 of the conical guide head 140.
  • a further compression spring 154 is provided.
  • This compression spring 154 is between a stop on the holding device 180 and a Stopper 168 clamped to the outer part 160-1 of the support roller holding device under the desired bias. It causes a pressing of the outer part 160-1 and thus the entire support roller holding device 160 radially outward against the inner wall 142 of the guide head 140th
  • FIG. 3 shows a cross section through the device according to the invention, ie a plan view of the clamping device 110 facing end side.
  • three support roller holding devices 160 can be seen, which are each subdivided in the radial direction into the inner part 160-2 and the outer part 160-1. Between the parts a distance 169 can be seen, which represents the said game.
  • the three support roller holding devices are each radially aligned and arranged circumferentially offset by 120 °. It will be appreciated that the support rollers 162 contact and roll on the outer diameter of the tube 200 as the device rotates about the tube 200.
  • guide surfaces 146 which extend in the axial direction are formed on the inner side of the wall 142 of the guide head 140. The guide surfaces 146 serve to guided along the support roller holders 160, in particular their outer parts 160-1, in the axial direction during a displacement of the guide head 140th
  • the support roller preferably has on its circumference a profiling which is complementary to the desired indentation in the freely accessible wall region of the tube 200.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP15176694.6A 2015-07-14 2015-07-14 Dispositif destine à l'usinage d'un tube Not-in-force EP3117916B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15176694.6A EP3117916B1 (fr) 2015-07-14 2015-07-14 Dispositif destine à l'usinage d'un tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15176694.6A EP3117916B1 (fr) 2015-07-14 2015-07-14 Dispositif destine à l'usinage d'un tube

Publications (2)

Publication Number Publication Date
EP3117916A1 true EP3117916A1 (fr) 2017-01-18
EP3117916B1 EP3117916B1 (fr) 2018-03-28

Family

ID=53765068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15176694.6A Not-in-force EP3117916B1 (fr) 2015-07-14 2015-07-14 Dispositif destine à l'usinage d'un tube

Country Status (1)

Country Link
EP (1) EP3117916B1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110918729A (zh) * 2019-12-17 2020-03-27 浙江工业大学 一种金属管材无扩口滚压成形装置
CN116900192A (zh) * 2023-09-13 2023-10-20 万向钱潮股份公司 一种减震器封口装置及封口方法
CN117161655A (zh) * 2023-11-01 2023-12-05 成都大金航太科技股份有限公司 一种大直径薄壁管用防形变的内外双夹持结构
CN118023319A (zh) * 2024-04-11 2024-05-14 江苏熊火机械制造有限公司 双链式7线自动拉拔机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4143535A (en) * 1978-02-21 1979-03-13 Automatic Sprinkler Limited Pipe end shaper
US5467627A (en) * 1994-01-05 1995-11-21 Wauseon Machine And Manufacturing, Inc. End finisher machine
DE29720321U1 (de) 1997-11-17 1998-02-12 Transfluid Maschinenbau GmbH, 57392 Schmallenberg Vorrichtung zum Umformen eines Rohrendes
EP0916426A1 (fr) * 1997-11-11 1999-05-19 Sango Co., Ltd. Méthode et dispositif pour le formage de l' extrémité d' une pièce cylindrique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4143535A (en) * 1978-02-21 1979-03-13 Automatic Sprinkler Limited Pipe end shaper
US5467627A (en) * 1994-01-05 1995-11-21 Wauseon Machine And Manufacturing, Inc. End finisher machine
EP0916426A1 (fr) * 1997-11-11 1999-05-19 Sango Co., Ltd. Méthode et dispositif pour le formage de l' extrémité d' une pièce cylindrique
DE29720321U1 (de) 1997-11-17 1998-02-12 Transfluid Maschinenbau GmbH, 57392 Schmallenberg Vorrichtung zum Umformen eines Rohrendes

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110918729A (zh) * 2019-12-17 2020-03-27 浙江工业大学 一种金属管材无扩口滚压成形装置
CN110918729B (zh) * 2019-12-17 2024-03-26 浙江工业大学 一种金属管材无扩口滚压成形装置
CN116900192A (zh) * 2023-09-13 2023-10-20 万向钱潮股份公司 一种减震器封口装置及封口方法
CN116900192B (zh) * 2023-09-13 2023-12-05 万向钱潮股份公司 一种减震器封口装置
CN117161655A (zh) * 2023-11-01 2023-12-05 成都大金航太科技股份有限公司 一种大直径薄壁管用防形变的内外双夹持结构
CN117161655B (zh) * 2023-11-01 2024-01-30 成都大金航太科技股份有限公司 一种大直径薄壁管用防形变的内外双夹持结构
CN118023319A (zh) * 2024-04-11 2024-05-14 江苏熊火机械制造有限公司 双链式7线自动拉拔机

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