GB2597615A - Iron core lamination welding assistance apparatus - Google Patents

Iron core lamination welding assistance apparatus Download PDF

Info

Publication number
GB2597615A
GB2597615A GB2114480.3A GB202114480A GB2597615A GB 2597615 A GB2597615 A GB 2597615A GB 202114480 A GB202114480 A GB 202114480A GB 2597615 A GB2597615 A GB 2597615A
Authority
GB
United Kingdom
Prior art keywords
iron core
grooves
pocketing
mandrel
core lamination
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.)
Pending
Application number
GB2114480.3A
Other versions
GB202114480D0 (en
Inventor
Shan Kedi
Chen Jianhua
Chen Jianwei
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.)
Hengdian Group Innuovo Electric Co Ltd
Original Assignee
Hengdian Group Innuovo Electric Co 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 Hengdian Group Innuovo Electric Co Ltd filed Critical Hengdian Group Innuovo Electric Co Ltd
Publication of GB202114480D0 publication Critical patent/GB202114480D0/en
Publication of GB2597615A publication Critical patent/GB2597615A/en
Pending legal-status Critical Current

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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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70—Auxiliary operations or equipment
    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70—Auxiliary operations or equipment
    • B23K26/702—Auxiliary equipment
    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • 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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

An iron core lamination welding assistance device, each iron core lamination being provided with two positioning holes (19) through which positioning shafts (4) pass, wherein the assistance device comprises a core shaft (1), one end of which is provided with a limiting boss (11) that extends outward therefrom in the circumferential direction, the other end of which has a locking block (2) sleeved thereon; the end face of the locking block (2) and of the limiting boss (1) are provided with first fixing holes (12) used for accommodating the positioning shafts (4); the locking block (2) and the limiting boss (11) are provided with recesses along the circumferential direction thereof, which constitute a plurality of first access grooves (2); the plurality of first access grooves (20) are provided at intervals about a ring the center of which is the core shaft (1); the first access grooves (20) on the locking block (20) correspond one-to-one to the first access grooves (20) on the limiting boss (11); and when a stacked plurality of iron core laminations are limited between the locking block (2) and the limiting boss (11), the iron core lamination positions that are to be welded are located between the two corresponding first access grooves (20). The apparatus has the advantage of improving the securing effect of welding as well as production efficiency.

Description

IRON CORE LAMINATION WELDING ASSISTANCE APPARATUS
Technical Field of the Invention
The present invention relates to the field of rotor production and machining, in particular to an iron core lamination welding assistance apparatus.
Background of the Invention
A rotor iron core comprises several iron core laminations. In the conventional way, the several iron core laminations are sleeved on a mandrel, locating shafts run through locating holes on the iron core laminations, and the iron core laminations are tightly pressed by a press piece and finally welded together by laser welding so that the welded rotor core has several weld marks which are axially spaced in a circular shape centered on the axis of the mandrel.
The laser welding strength is relatively low due to the fear of welding the rotor lamination and the mandrel together, which results in a poor welding effect of the several iron core laminations of the welded rotor core and easy detachment of the iron core laminations from both ends of the rotor core.
Summary of the Invention
An objective of the present invention is to provide an iron core lamination welding assistance apparatus which can improve the welding effect.
To achieve the above objective, a technical solution employed in the present invention is as follows. The present invention provides an iron core lamination welding assistance apparatus, comprising a mandrel with one end extending outward in the circumferential direction to form a stop boss and the other end being sleeved with a locking piece, each iron core lamination being provided with two locating holes for locating shafts to run through; first mounting holes each fitted to the locating shaft are provided on end faces of the locking piece and the stop boss, respectively, both circumferential surfaces of the locking piece and the stop boss are sunken inward to form several first pocketing grooves which are spaced in a circular shape centered on the mandrel, and the first pocketing grooves on the locking piece correspond to those on the stop boss one by one. When the several iron core laminations are confined between the locking piece and the stop boss, portions of the iron core laminations to be welded are positioned between the two corresponding first pocketing grooves.
During use of the apparatus according to the present invention, the several iron core laminations are sleeved on the mandrel, the locating shafts are connected to the stop boss after running through the iron core laminations, and the locking bolt rotates to tightly press the iron core laminations between the stop boss and the locking piece. The positional relation between the first mounting holes and the first pocketing grooves enables the portions of the pressed iron core laminations to be welded are positioned on one side of the first pocketing grooves. The iron core laminations positioned in place are welded by laser. The arrangement of the first pocketing grooves will make the laser for welding move along the iron core laminations axially for a longer distance, and weld and fix the iron core laminations at both ends of a rotor iron core in a better effect.
Preferably, a threaded hole is formed at one end of the mandrel where the locking piece is located, a locking bolt is fitted in the threaded hole, and one end of the locking bolt is always located on an outer side of the threaded hole and fixed to a press piece; and the locking bolt rotates to enable an end face of the press piece to be in contact with the end face of the locking piece. Such arrangement makes the locking piece move axially, and the locking piece will not rotate when moving and can be guided by the first mounting holes to ensure the alignment of the two first pocketing grooves.
Preferably, several spacer plates, each having second mounting holes running through the spacer plates and corresponding to the first mounting holes on both ends thereof, are sleeved on the mandrel, and second pocketing grooves corresponding to the first pocketing grooves are provided on two axial ends of each spacer plate. The spacer plates are provided so that the iron core laminations of at least two rotor iron cores can be tightly pressed and positioned on the mandrel in the present invention, and can be welded by laser welding each time to improve the production efficiency.
Preferably, strip-shaped receiving slots, which run through from inside to outside to correspond to the first pocketing grooves, are provided on a circumferential surface of the mandrel, located on inner sides of the first pocketing grooves and communicated with the first pocketing grooves. The strip-shaped receiving slots communicated with the first pocketing groove is provided to prevent the locking piece and the mandrel from being welded and fixed together, and improve the welding strength of laser welding.
Preferably, strip-shaped receiving slots, which run through from inside to outside to correspond to the first and second pocketing grooves, are provided on the circumferential surface of the mandrel, located on inner sides of the first and second pocketing grooves and communicated with the first and second pocketing grooves. Such arrangement prevents the spacer plates and the mandrel from being welded and fixed together.
Preferably, the mandrel is provided with an inner cavity running through an axial surface on one side away from the threaded hole. The inner cavity is provided to reduce the weight of the mandrel.
The present invention has the advantages of improving the welding and fixing effect as well as the production efficiency.
Brief Description of the Drawings
FIG I is a structural diagram according to the present invention in use; FIG 2 is an explode view of FIG. 1; FIG 3 is a structural diagram of a mandrel according to the present invention; FIG 4 is a structural diagram of a spacer plate according to the present invention, and FIG 5 is a structural diagram of a locking piece according to the present invention.
Detailed Description of the Invention
The present invention will be further described below with reference to accompanying drawings by embodiments.
As shown in FIGS. 1 to 5, the present invention provides an iron core lamination welding assistance apparatus, comprising a mandrel 1 with a lower end extending outward in the circumferential direction to form a stop boss 11 and an upper end being sleeved with a locking piece 2; an threaded hole in which a locking bolt 3 is fitted is provided on an upper end face of the mandrel 1, and one end of the locking bolt 3 is always located on an outer side of the threaded hole and fixed to a press piece 31; first mounting holes 12 each fitted to a locating shaft 4 are provided on end faces of the locking piece 2 and the stop boss 11, respectively, both circumferential surfaces of the locking piece 2 and the stop boss 11 are sunken inward to form several first pocketing grooves 20 which are evenly spaced in a circular shape centered on the mandrel 1, and the first pocketing grooves on the locking piece 2 correspond to those on the stop boss 11 one by one. When several iron core laminations are sleeved on the mandrel 1, the locating shaft 4 runs through locating holes 19 on the iron core laminations. When the locking bolt 3 rotates to enable an end face of the press piece 31 to press against the end face of the locking piece 2, the several iron core laminations sleeved on the mandrel 1 are clamped and confined between the locking piece 2 and the stop boss 11, and portions of the iron core laminations to be welded are positioned between the two corresponding first pocketing grooves 20.
Spacer plates 5, which are provided with second mounting holes 51 running through the spacer plates 5 and corresponding to the first mounting holes 12, are sleeved on the mandrel 1, and second pocketing grooves 50 corresponding to the first pocketing grooves 20 are provided on two axial ends of each spacer plate 5. The mandrel 1 is provided with an inner cavity running through an axial surface on one side away from the threaded hole so that the mandrel 1 is of a cylindrical structure with one end closed Strip-shaped receiving slots 10, which run through from inside to outside to correspond to the first and second pocketing grooves 20 and 50, are provided on a circumferential surface of the mandrel I, located on inner sides of the first and second pocketing grooves 20 and 50 and communicated with the first and second pocketing grooves 20 and 50.
During use of the apparatus according to the present invention, two sets of iron core laminations are sleeved on the mandrel and separated by the spacer plate, the locating shafts are connected to the stop boss after running through the iron core laminations and the spacer plates, and the locking bolt rotates to tightly press the iron core laminations between the stop boss and the locking piece. The locating shaft is configured to stop the rotation of the locking piece and the spacer plate. The positions of the first pocketing grooves, the second pocketing grooves and the strip-shaped receiving slots are designed based on the positions of the first mounting holes so that the portions of the pressed iron core laminations to be welded are positioned outside the strip-shaped receiving slots in the circumferential direction. The iron core laminations positioned in place are welded by laser. The arrangement of the first and second pocketing grooves will make the laser for welding move along the iron core laminations axially for a longer distance, and weld and fix the iron core laminations at both ends of a rotor iron core in a better effect.
The present invention has the advantages of improving the welding and fixing effect as well as the production efficiency.

Claims (6)

  1. CLAIMS1. An iron core lamination welding assistance apparatus, each iron core lamination having two locating holes to allow a locating shaft to extend therethrough, comprising: a mandrel with one end extending outward circumferentially to form a stop boss and the other end sleeved with a locking piece; first mounting holes provided on end faces of the locking piece and the stop boss respectively to couple the locating shaft, wherein both circumferential surfaces of the locking piece and the stop boss are recessed to form a plurality of first pocketing grooves, the plurality of first pocketing grooves are centered around the mandrel and spaced apart from each other, and the first pocketing grooves on the locking piece respectively correspond to those on the stop boss; and when an iron core lamination is retained between the locking piece and the stop boss, portions of the iron core lamination to be welded are positioned between the two corresponding first pocketing grooves.
  2. 2 The iron core lamination welding assistance apparatus according to claim 1, wherein: a threaded hole is formed at one end of the mandrel where the locking piece is located; a locking bolt is fitted in the threaded hole, and one end of the locking bolt is always located on an outer side of the threaded hole and fixed to a press piece; and the locking bolt is operable to rotate to enable the end face of the press piece to be in contact with an end face of the locking piece.
  3. 3. The iron core lamination welding assistance apparatus according to claim I, wherein: a plurality of spacer plates, each having second mounting holes running through the spacer plates and corresponding to the first mounting holes on both ends thereof, are sleeved on the mandrel; and second pocketing grooves corresponding to the first pocketing grooves are provided on two axial ends of each spacer plate.
  4. 4 The iron core lamination welding assistance apparatus according to claim I, wherein: strip-shaped receiving slots, which run through from inside to outside to correspond to the first pocketing grooves, are provided on a circumferential surface of the mandrel; and the receiving slots are located on inner sides of the first pocketing grooves and communicated with the first pocketing grooves.
  5. The iron core lamination welding assistance apparatus according to claim 3, wherein: strip-shaped receiving slots, which run through from inside to outside to correspond to the first and second pocketing grooves, are provided on the circumferential surface of the mandrel; and the receiving slots are located on inner sides of the first and second pocketing grooves and communicated with the first and second pocketing grooves.
  6. 6. The iron core lamination welding assistance apparatus according to claim 2, wherein the mandrel is provided with an inner cavity running through an axial surface on one side away from the threaded hole.
GB2114480.3A 2020-07-22 2020-09-22 Iron core lamination welding assistance apparatus Pending GB2597615A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010710449.2A CN111716026A (en) 2020-07-22 2020-07-22 Auxiliary device for welding iron core punching sheet
PCT/CN2020/116636 WO2021120746A1 (en) 2020-07-22 2020-09-22 Iron core lamination welding assistance apparatus

Publications (2)

Publication Number Publication Date
GB202114480D0 GB202114480D0 (en) 2021-11-24
GB2597615A true GB2597615A (en) 2022-02-02

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ID=72573180

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2114480.3A Pending GB2597615A (en) 2020-07-22 2020-09-22 Iron core lamination welding assistance apparatus

Country Status (4)

Country Link
CN (1) CN111716026A (en)
DE (1) DE112020000330T5 (en)
GB (1) GB2597615A (en)
WO (1) WO2021120746A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111716026A (en) * 2020-07-22 2020-09-29 横店集团英洛华电气有限公司 Auxiliary device for welding iron core punching sheet
CN112453687A (en) * 2020-11-13 2021-03-09 北京曙光航空电气有限责任公司 Stator core lamination group batch welding tool based on laser welding
CN112846608A (en) * 2020-12-28 2021-05-28 中国原子能科学研究院 Welding tool for laser welding of sealing cylinder
CN114160973A (en) * 2021-11-09 2022-03-11 东阳市联宜机电有限公司 Rotor core laser welding equipment

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0777315A2 (en) * 1995-12-01 1997-06-04 BRANSON ULTRASCHALL Niederlassung der EMERSON TECHNOLOGIES GmbH & CO. Orbital welding machine
US20150162788A1 (en) * 2013-12-09 2015-06-11 Metal Industries Research & Development Centre Rotor core assembly for a reluctance motor and manufacturing method of the same
CN205960904U (en) * 2016-08-18 2017-02-15 上海华银电器有限公司 Disk type motor stator core welding auxiliary device
CN108673013A (en) * 2018-05-23 2018-10-19 安徽江淮汽车集团股份有限公司 A kind of rotor auxiliary welding equipment
CN109702340A (en) * 2019-01-30 2019-05-03 横店集团英洛华电气有限公司 Rotor core and end ring welding auxiliary device
CN210648973U (en) * 2019-10-18 2020-06-02 江阴市宏运电器有限公司 Stator core positioning tool
CN111716026A (en) * 2020-07-22 2020-09-29 横店集团英洛华电气有限公司 Auxiliary device for welding iron core punching sheet
CN212217483U (en) * 2020-07-22 2020-12-25 横店集团英洛华电气有限公司 Auxiliary device for welding iron core punching sheet

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0777315A2 (en) * 1995-12-01 1997-06-04 BRANSON ULTRASCHALL Niederlassung der EMERSON TECHNOLOGIES GmbH & CO. Orbital welding machine
US20150162788A1 (en) * 2013-12-09 2015-06-11 Metal Industries Research & Development Centre Rotor core assembly for a reluctance motor and manufacturing method of the same
CN205960904U (en) * 2016-08-18 2017-02-15 上海华银电器有限公司 Disk type motor stator core welding auxiliary device
CN108673013A (en) * 2018-05-23 2018-10-19 安徽江淮汽车集团股份有限公司 A kind of rotor auxiliary welding equipment
CN109702340A (en) * 2019-01-30 2019-05-03 横店集团英洛华电气有限公司 Rotor core and end ring welding auxiliary device
CN210648973U (en) * 2019-10-18 2020-06-02 江阴市宏运电器有限公司 Stator core positioning tool
CN111716026A (en) * 2020-07-22 2020-09-29 横店集团英洛华电气有限公司 Auxiliary device for welding iron core punching sheet
CN212217483U (en) * 2020-07-22 2020-12-25 横店集团英洛华电气有限公司 Auxiliary device for welding iron core punching sheet

Also Published As

Publication number Publication date
DE112020000330T5 (en) 2021-11-04
WO2021120746A1 (en) 2021-06-24
GB202114480D0 (en) 2021-11-24
CN111716026A (en) 2020-09-29

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