US3562473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for producing bearings and the like from strip stock
Assignee: TORIN-TORRINGTON INDUSTRIES Inc C/O LAWRENCE KAMIN SAUNDERS & UHLENHOP A CORP OF DELAWARE
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Filing: 1968-04-16
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Granted: 1971-02-09
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Expires: 1988-04-16
Abstract
Abstract A high production machine of the vertical four-slide type for intermittently advancing strip stock, severing blanks therefrom, forming the same into bearing races and welding end portions thereof together. The machine has a projecting horizontal mandrel with three work stations therealong respectively for preforming, forming, and preheating and/or welding. A cutoff anvil, transfer pins, broaching tools, and an expandable mandrel section are provided all with rear motion drive action and a welding mechanism is adapted for both preheat and weld operation adjacent the expandable mandrel section. A bearing race discharge track extends from the welding station to an induction furnace.
Inventors
- 👤 Erman V Cavagnero
- 👤 Joseph F Loftus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:42
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/30; F16C33/58; F16C33/64; B; B21; B21D; B21D53/00; B21D53/10; B21D53/12; B23; B23D; B23D37/00; B23K; B23K11/00; B23K11/002; F16C2226/00; F16C2226/30; F16C2226/36
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
185 words
In a machine for producing welded bearings and the like, the combination of a mandrel shaped to accommodate bearings disposed thereabout, said mandrel having a work station at a selected axial position therealong, an expansion device at said work station having collapsed and expanded conditions and adapted in its expanded condition to engage an unwelded bearing at the station and to expand the same whereby to separate adjacent end portions thereof, a transfer device for advancing bearings in succession along said mandrel to said work station, a pair of electrodes at said work station movable cooperatively toward and away from a bearing at the station and engageable with generally opposite portions of the bearings, and means for operating said expansion device and electrodes in timed relationship whereby to expand the bearing and engage the electrodes therewith for a welding preheat operation, said expansion device serving to separate said bearing end portions sufficiently to prevent arcing and current flow thereacross whereby to maintain the end portions relatively cold with current flow and preheat occurring in an opposite portion of the bearing spaced from the end portions.
Claim 2
Dependent Claim
185 words
In a machine for producing welded bearings and the like, the combination of a mandrel shaped to accommodate bearings disposed thereabout, said mandrel having a work station at a selected axial position therealong, an expansion device at said work station having collapsed and expanded conditions and adapted in its expanded condition to engage an unwelded bearing at the station and to expand the same whereby to separate adjacent end portions thereof, a transfer device for advancing bearings in succession along said mandrel to said work station, a pair of electrodes at said work station movable cooperatively toward and away from a bearing at the station and engageable with generally opposite portions of the bearings, and means for operating said expansion device and electrodes in timed relationship whereby to expand the bearing and engage the electrodes therewith for a welding preheat operation, said expansion device serving to separate said bearing end portions sufficiently to prevent arcing and current flow thereacross whereby to maintain the end portions relatively cold with current flow and preheat occurring in an opposite portion of the bearing spaced from the end portions.
Claim 3
Dependent Claim
57 words
The combination in a machine for producing welded bearings and the like as set forth in claim 1 wherein said operating means is adapted further to collapse said expansion device with a bearing at said work station whereby to permit the bearing end portions to engage for current flow therethrough and for welding of the same together.
Claim 4
Dependent Claim
55 words
The combination in a machine for producing welded bearings and the like as set forth in claim 2 wherein the same pair of electrodes engage a bearing at said work station for both preheat and weld operations, the former operation with the bearing expanded and the latter with bearing end portions in engagement for welding.
Claim 5
Dependent Claim
60 words
The combination in a machine for producing welded bearings and the like as set forth in claim 3 wherein a clamping device is operatively associated with said electrodes at said work station and actuated by said operating means to exteriorly engage and to exert substantial pressure on a bearing at said work station for welding of the bearing end portions.
Claim 6
Dependent Claim
60 words
The combination in a machine for producing welded bearings and the like as set forth in claim 4 wherein said operating means is adapted to maintain said expansion device in engagement with an interior surface of a bearing during welding of the bearing whereby to equalize pressure on the exterior surface of the bearing by said electrodes and clamping device.
Claim 7
Dependent Claim
104 words
The combination in a machine for producing welded bearings and the like as set forth in claim 4 wherein said transfer device comprises a set of axially reciprocal transfer pins provided with magnetic means and engageable with an unwelded bearings to urge the same into engagement with preceding bearings at said preheat station and to eject the latter from said station, said pins being movable through a sufficient stroke to urge the unwelded bearings beyond the preheat station and then to withdraw the unwelded bearings to the preheat station under magnetic force whereby to provide a space between said unwelded and ejected preceding bearings.
Claim 8
Dependent Claim
64 words
The combination in a machine for producing welded bearings and the like as set forth in claim 6 and including a retaining means operable in timed relationship with said transfer pins to engage each said preceding bearing transferred from said preheat station and to retain the same in spaced relationship with the said station against magnetic forces generated during subsequent preheat and weld operations.
Claim 9
Dependent Claim
71 words
The combination in a machine for producing welded bearings and the like as set fortH in claim 1 wherein said electrodes are arranged to engage a bearing at said work station along similar exterior bearing surface areas which are spaced from and on opposite sides of said end portions but which are nevertheless somewhat closer to said end portions than to a point on said bearing diametrically opposite said end portions.
Claim 10
Dependent Claim
47 words
The combination in a machine for producing welded bearings and the like as set forth in claim 8 wherein each of said electrodes is shaped to engage a bearing along an area located as aforesaid and which extends over less than one-fourth the circumference of the bearing.
Claim 11
Dependent Claim
41 words
The combination in a machine for producing welded bearings and the like as set forth in claim 9 wherein each of said electrodes is shaped to engage the bearing along an area which extends over approximately one-eighth of the bearing circumference.
Claim 12
Dependent Claim
59 words
The combination in a machine for producing welded bearings and the like as set forth in claim 1 wherein said expansion device comprises at least two generally radially movable elements carried by said mandrel and an actuator movable to urge said elements generally radially outwardly and into engagement with the interior surface of a bearing at the work station.
Claim 13
Dependent Claim
36 words
The combination in a machine for producing welded bearings and the like as set forth in claim 11 wherein said elements and actuator have engageable camming means operable on actuator movement to urge the elements outwardly.
Claim 14
Dependent Claim
69 words
The combination in a machine for producing welded bearings and the like as set forth in claim 12 wherein three said elements are provided with pivotal connection with the mandrel and with inwardly facing actuator engageable surfaces, and wherein said actuator is disposed within said mandrel for axial movement with inclined surfaces engageable with said element inner surfaces for generally radial element movement in response to axial actuator movement.
Claim 15
Dependent Claim
75 words
The combination in a machine for producing welded bearings and the like as set forth in claim 1 and including at least one tool associated with said mandrel and arranged to engage surfaces to be welded at the end portions of a bearing on the mandrel, and means for effecting relative generally axial movement between said tool and said surfaces whereby to provide clean freshly exposed surfaces prior to welding together of said end portions.
Claim 16
Dependent Claim
96 words
The combination in a machine for producing welded bearings and the like as set forth in claim 14 wherein two tools are provided for generally axial movement relative to said mandrel and for respective engagement with the surfaces at the end portions of an unwelded bearing which is spaced axially along said mandrel from said work station, said tools taking the form of broaching tools operable in their axial movement to remove material from said end portions to provide clean freshly exposed surfaces prior to transfer of said bearing to said work station for preheat operation.
Claim 17
Dependent Claim
70 words
The combination in a machine for producing welded bearings and the like as set forth in claim 15 wherein a forming work station is provided along said mandrel in axially spaced relationship with said preheat work station, wherein said transfer device is operable to advance bearings in succession from said forming station to said preheat station, and wherein said broaching tools are operable at least approximately adjacent said forming station.
Claim 18
Dependent Claim
103 words
The combination in a machine for producing welded bearings and the like as set forth in claim 16 wherein a preforming work station is provided along said mandrel on a side of said forming station opposite said preheat station, wherein forming tools are provided adjacent said preforming station for successively producing partially formed bearings with end portions widely spaced apart, wherein said transfer device is operable to advance bearings along said mandrel successively from said preforming station to said forming station, and wherein said broaching tools are so located as to operate on said widely spAced end portions of said partially formed bearings.
Claim 19
Dependent Claim
88 words
The combination in a machine for producing welded bearings and the like as set forth in claim 17 and including feed and cutoff means associated with said preforming station, said feed means being operable to advance intermittently to said station and transversely of said mandrel a leading end section of an elongated strip of bearing material, and said cutoff means being operable intermittently in timed relationship with said feed means to sever said advanced leading end sections whereby successively to provide linear bearing blanks at said preforming station.
Claim 20
Dependent Claim
107 words
The combination in a machine for producing welded bearings and the like as set forth in claim 18 and including a plurality of generally radially reciprocal forming tools arranged in a hub-spoke spoke configuration about said mandrel adjacent said preforming and forming stations, said tools being shaped at said preforming station successively to bend said linear bearing blanks about said mandrel to a partially circular configuration with end portions spaced apart a distance greater than a radius of a finished bearing, and said tools being shaped at said forming station successively to bend said partially formed bearings to a circular configuration with end portions substantially in engagement.
Claim 21
Dependent Claim
87 words
The combination in a machine for producing welded bearings and the like as set forth in claim 17 wherein said transfer device comprises first and second sets of axially reciprocal transfer pins adapted respectively for engagement with partially and fully formed bearings at said preforming and forming stations, said first set of pins serving to advance partially formed bearings from said preforming station to said forming station, and said second set of pins serving to advance fully formed bearings from said forming station to said preheat station.
Claim 22
Dependent Claim
115 words
The combination in a machine for producing welded bearings and the like as set forth in claim 20 wherein said second set of transfer pins is provided with magnetic means for engaging an unwelded bearing at said forming station, and wherein said second set of pins is adapted to advance an unwelded bearing from said forming station to a point beyond said preheat station whereby to engage a preceding bearing at said preheat station and to eject the same from said station, said second set of pins being adapted further to withdraw said unwelded bearing under magnetic force to said preheat station whereby to provide a space between said unwelded bearing and said preceding bearing.
Claim 23
Dependent Claim
64 words
The combination in a machine for producing welded bearings and the like as set forth in claim 21 and including a retaining means operable in timed relationship with said transfer pins to engage each said preceding bearing ejected from said preheat station and to retain the same in spaced relationship with the said station against magnetic forces generated during subsequent preheat and weld operations.
Claim 24
Dependent Claim
63 words
The combination in a machine for producing welded bearings and the like as set forth in claim 22 and including a track means associated with an end portion of said mandrel adjacent said preheat station and adapted successively to receive bearings ejected from said station, and including further a bearing post-heat means associated with said track and adapted successively to receive bearings thereon.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |