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
  • B23K20/122—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 a non-consumable tool, e.g. friction stir welding
  • B23K20/1245—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 a non-consumable tool, e.g. friction stir welding characterised by the apparatus
• • 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
  • B23K20/122—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 a non-consumable tool, e.g. friction stir welding
  • B23K20/1245—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 a non-consumable tool, e.g. friction stir welding characterised by the apparatus
  • B23K20/1255—Tools therefor, e.g. characterised by the shape of the probe
• • 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
  • B23K20/122—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 a non-consumable tool, e.g. friction stir welding

Definitions

• the application relates to a device and a method for increasing the speed and increasing the stability of the welding pin during friction stir welding.
• friction stir welding frictional heat is generated in the joining area of the materials to be joined by means of the friction between a rotating tool that is simultaneously moved in translation and applied with pressure.
• the tool is moved along the joining area and stirs the practiced material inside the seam of the one to be joined abutting materials, whereby the applied pressure compresses the practiced material.
• the tool is pulled out of the connection area and the weld seam created in this way can be loaded immediately.
• friction pins may break due to local, material changes within welded assemblies, for example due to fluctuations in hardness in cast materials.
• the present invention is therefore based on the object of not only ensuring the economic operation of a system for friction stir welding, but also increasing its welding speed and increasing the service life of the reaming tool.
• a tool drive (1) carries a retaining flange (2) for a conical tool bell (3) with a union nut (4) an annular retaining ring ( 12) encloses a pin shaft (6) with one attached to the diameter of the retaining ring (12),
• Tool shoe (7) having a smoothing and compacting surface (11) in the area of the pin tip (10) for smoothing the weld seam
• the pin shaft having the width of the tool shoe (7) and the pin tip (10)
• a tool drive (1) carries a conical tool bell (3), with a lifting device (18) of a roller arm (17) in the Area of the abutting edge (19) of the joining partner (5) is provided, the tool shoe (7) having a smoothing and compacting surface (11) for smoothing the weld seam, a friction ring surface (9) having a screw conveyor (8) for encloses the output of the material transport of the pin tip (10), which runs in the turn opposite to the turn of the pin tip (10) and that the friction ring surface (9) heats the joining partners (5) by friction and thus increases the speed of the welding process, whereby a slight burr is thrown up on the left and right side, which is however leveled by means of the rollers (16) and that the distance between the tear-off edge (13) of the smoothing and compacting fl ambae - area (11) of the pin shaft (6) is optimized in the course and a computer program with a program code
• Fiq 1 a side view of the tool shoe according to the invention
• Fiq. 2 an oblique view of the holder for the welding shoe
• Fiq. 3 a detail view from the area of the pin shaft
• Fiq. 4 a top view of the track in the area of the roller rollers
• Fiq. 5 shows an overall view of the pin shaft;
• FIG. 6 shows a plan view of the welding process
• the Fiq. 1 shows a direct side view of the tool shoe (7).
• the tool shoe (7) is attached to the tool bell via a union nut (4)
• the tool shoe (7) is shown with its pin shank (6) in direct engagement with the joining partner (5) to be welded.
• a lifting device (18) for a roller arm (17) (or corresponding balls) which takes over the guidance of two parallel rolling rollers (16) which one (18) can be seen in the side view.
• the lifting device is controlled with piezos, whereby the height or pressure control of the rollers must be independent of the actual process force control. In this way, the pressure of the roller rollers can adapt to the burr that has arisen, because too high a pressure would impress the rollers into the joint, as the rollers press the joint partners within the heating zone (15) (see Fig. 6)
• Fiq.2 shows an oblique view of the holder for the welding shoe.
• the pin shaft (6) leading through the annular retaining ring (12) of the welding shoe carries the tool shoe (7) with its smoothing and compacting surface (11).
• the pin shaft (6) running out into the pin tip (10) also carries a counterclockwise screw conveyor (8) before it reaches the pin tip (10), which always conveys the drainage material into the process zone
• the lower area is surrounded by an annular friction ring surface (9) at the level of the smoothing and compression surface (11) which is used for heating of the joining partner or the joining partner (5) is used.
• the annular gap between the radius pin shoe (14) and pin shaft (6) is sealed at the top.
• .Drainage material is the name for the abrasion material that is released from the joining partners (5) during the welding process and is deposited on the pin (6).
• the Fiq. 3 shows a detailed view from the area of the pin shaft.
• the pin tip (10) that plunges completely into a joint partner (5) can be seen, whereby the smooth and compacting surface (11) in the tool shoe (11) hitting the joint partner (5) at an angle, usually at an angle of 1.5 to 5 degrees. 7) exerts its smoothing and compression effect on the joint partner (5) and the function of the screw conveyor (8) for transporting abrasive material and the friction ring surface (9) for heating the joint partner can be seen in the pin shaft (6).
• the retaining ring (12) which is drawn in dashed lines due to the machine conversion, is known from FIG. 2.
• FIG. 4 shows a top view of the track in the area of the roller rollers (16) above the two joining partners (5).
• Fig. 5 shows an overall view of the pin shaft
• the pin shaft (6) shown in the center vertically reveals the tool shoe (7) with its smooth and compacting surface (11), the friction ring surface (9) and the screw conveyor (8) located in the lower area.
• the tip of the pin (10) can also be seen.
• This configuration results in a faster welding speed and a longer tool life.
• Fig. 6 shows a plan view of the welding process.
• the curve (15) shows the heat zone of the actual welding process, the dashed center line (19) in FIG. 6 showing the joint edge of the joint partners (5) to be welded
• the two rolling rollers (16) smooth the unevenness or weld seam edges (20).
• the boundary lines of the welding shoe (7) are marked with (7) from above.
• the smoothing surface (11) with its tear-off edge (13) surrounds half the surface (9), which is referred to as the friction surface for the joint partner - heating.
• the pin shaft (6) with its pin tip (10) can be seen as the center of the welding process.
• the control of the welding process with its extensive regulation options requires a special computer program.
• Tool drive Retaining flange for tool bell (cone) Tool bell (cone) Union nut for tool shoe, joining partner, pin shaft, tool shoe, screw conveyor for abrasive material transport (also referred to as expulsion thread.) Friction ring - surface for joining partner - heating pin tip, smoothing and compacting surface Retaining ring for welding shoe tear-off edge radius pin shoe heat distribution curve rolling roller (or ball) rolling roller arm lifting device for rolling roller arm abutment edge of the joining partners burrs, unevenness, weld seam edge weld seam

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Pressure Welding/Diffusion-Bonding (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=72708972

Family Applications (1)

Country Status (11)

Families Citing this family (4)

Family Cites Families (19)

• 2019
  • 2019-09-11 DE DE102019006413.5A patent/DE102019006413A1/de not_active Ceased
• 2020
  • 2020-09-11 WO PCT/DE2020/000207 patent/WO2021047706A1/de unknown
  • 2020-09-11 JP JP2021525581A patent/JP2022530588A/ja active Pending
  • 2020-09-11 CN CN202080007823.0A patent/CN113226620A/zh active Pending
  • 2020-09-11 KR KR1020217015520A patent/KR20210073582A/ko not_active Application Discontinuation
  • 2020-09-11 MX MX2021007023A patent/MX2021007023A/es unknown
  • 2020-09-11 CA CA3119929A patent/CA3119929C/en active Active
  • 2020-09-11 BR BR112021009067A patent/BR112021009067A2/pt not_active Application Discontinuation
  • 2020-09-11 US US17/295,375 patent/US11883901B2/en active Active
  • 2020-09-11 EP EP20785430.8A patent/EP4028202A1/de active Pending
• 2021
  • 2021-05-18 IL IL283246A patent/IL283246A/en unknown
• 2023
  • 2023-11-01 US US18/499,568 patent/US20240058890A1/en active Pending

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