EP3972773A1 - SYNCHRONISATIONSGETRIEBE ZUM LINEAREN REIBSCHWEIßEN - Google Patents
SYNCHRONISATIONSGETRIEBE ZUM LINEAREN REIBSCHWEIßENInfo
- Publication number
- EP3972773A1 EP3972773A1 EP20728424.1A EP20728424A EP3972773A1 EP 3972773 A1 EP3972773 A1 EP 3972773A1 EP 20728424 A EP20728424 A EP 20728424A EP 3972773 A1 EP3972773 A1 EP 3972773A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clamping devices
- transmission according
- drive
- articulated
- another
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/1205—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using translation movement
Definitions
- the invention relates to a synchronization gear for linear friction welding, with which the end regions to be welded of surfaces of two components in contact with one another are held by clamping devices, pressed against one another and moved in an oscillating manner relative to one another.
- Components are not only understood here to mean strip or plate-shaped materials such as slabs with a flat rectangular cross-section, but also billets with a square cross-section and profiles such as e.g. Rails, double-T, U-profiles etc.
- Friction welding is a welding process from the group of pressure welding. Two parts are moved relative to one another under pressure, the parts touching one another at the contact surfaces. The resulting friction causes the material to heat up and plasticize (Wikipedia).
- the movement at the welding interface can be rotating or non-rotating.
- a non-rotating movement includes a linear, an elliptical or a vibratory movement. Friction welding by a rotating motion typically requires that at least one of the components be circular in cross-section.
- friction welding by a non-rotating movement is the means of joining components where the weld interface of both parts is not round.
- one component is oscillated relative to the other component while a forging force is normal to that Direction of movement is exercised.
- the forging force moves the components into contact, and with metal components, the friction between the components creates heat and plasticizes them. As soon as the movement stops, the metal hardens and thus connects the components.
- the drive system used to generate the oscillating movement must be able to provide a constant frequency and a constant amplitude, and must be able to place the oscillated components in the correct position for welding.
- One type of drive system is a mechanically powered system such as that disclosed in US 5,148,957. This type of drive system uses cams and links to provide reciprocation.
- a disadvantage of mechanically operated drive systems is the wear and tear that occurs in the system components. When the system is used, the eccentrics, joints and bearings wear out, resulting in deviations that need to be taken into account to ensure accuracy and repeatability of the process.
- JP 03199204 B2 describes pressure welding devices of various designs, among other things, an eccentric shaft is driven in one of the devices, the eccentrics of which move the clamping devices separately but synchronously in opposite directions via independent articulated rods.
- the object of the invention is to provide a synchronization gear that is characterized in particular by simple, low-wear operation.
- This object is achieved according to the invention with a synchronization gear for linear friction welding, with which the end regions to be welded of surfaces of strip or plate-shaped material in contact with one another are held by clamping devices, pressed against one another and moved in an oscillating manner relative to one another.
- clamping devices are connected independently of one another via articulated rods with a fixed pivot point, rotatable in the plane of the oscillating clamping devices, which in turn is articulated to a drive that rotates the disk in an oscillating manner about the central axis.
- the end regions of two slabs are designated by 1 and 2, whereby - more precisely - one slab 1 is actually the end region, while the designation head region is better for slab 2. Both areas should be pressure welded to one another. For this purpose, the end areas are held by clamping devices 4 or clamping devices in such a way that they lie against one another at the weld joint.
- the clamping devices 4 are connected by means of their own articulated rod 10 to a disc lying in the same plane, in the embodiment according to FIG. 1, a triangular plate 2, namely these are articulated in the corner points of a (common) triangle side.
- the triangular plate 2 is rotatable about an axis of rotation 6a lying in the plane of the articulated rods 10 or the clamping devices 4, for which purpose a hydraulic cylinder 5 is used, which is articulated to the triangular apex opposite the triangular side of the articulated rods.
- the two clamping devices move precisely in opposite directions so that the inertial forces compensate each other as much as possible during acceleration, i.e. H. the movement must be phase-shifted as precisely as possible by 180 ° in order to avoid imbalances.
- the disk consists of a rectangular or square plate to which two hydraulic cylinders 7 are articulated.
- the drive can, however, also take place according to FIG. 3 by an eccentric 8, 9 whose stroke is adjustable.
- the synchronous gear according to the invention can be used for friction welding slabs with a flat, rectangular cross-section, billets with a square cross-section and profiles such as rails, double-T, and U-profiles.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019207366 | 2019-05-20 | ||
DE102019218055.8A DE102019218055A1 (de) | 2019-05-20 | 2019-11-22 | Synchronisationsgetriebe zum linearen Reibschweißen |
PCT/EP2020/063849 WO2020234249A1 (de) | 2019-05-20 | 2020-05-18 | SYNCHRONISATIONSGETRIEBE ZUM LINEAREN REIBSCHWEIßEN |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3972773A1 true EP3972773A1 (de) | 2022-03-30 |
Family
ID=73052600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20728424.1A Withdrawn EP3972773A1 (de) | 2019-05-20 | 2020-05-18 | SYNCHRONISATIONSGETRIEBE ZUM LINEAREN REIBSCHWEIßEN |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3972773A1 (de) |
DE (1) | DE102019218055A1 (de) |
WO (1) | WO2020234249A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112756889B (zh) * | 2021-01-17 | 2022-11-29 | 西北工业大学 | 一种线性摩擦焊接夹具 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3840168A (en) * | 1971-10-27 | 1974-10-08 | Allwood Searle & Timney | Friction welding apparatus |
US4844320A (en) | 1987-02-17 | 1989-07-04 | General Electric Company | Control system and method for vibration welding |
GB8910452D0 (en) | 1989-05-06 | 1989-06-21 | Allwood Searle & Timney | Friction welding |
JP3199204B2 (ja) | 1993-11-12 | 2001-08-13 | 石川島播磨重工業株式会社 | シートバーの圧接接合装置 |
US6354482B1 (en) | 1998-11-06 | 2002-03-12 | United Technologies Corporation | Friction welder |
-
2019
- 2019-11-22 DE DE102019218055.8A patent/DE102019218055A1/de active Pending
-
2020
- 2020-05-18 WO PCT/EP2020/063849 patent/WO2020234249A1/de unknown
- 2020-05-18 EP EP20728424.1A patent/EP3972773A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2020234249A1 (de) | 2020-11-26 |
DE102019218055A1 (de) | 2020-11-26 |
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