US3627973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Successive automatic deposition of contiguous weld beads upon nonplanar surfaces
Assignee: Teledyne Inc
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Filing: 1970-06-24
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Granted: 1971-12-14
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Expires: 1990-06-24
Abstract
Abstract Method and apparatus for automatic control of welding means throughout the continuous application of a plurality of generally horizontal contiguous weld beads upon a nonplanar surface. The surface may be irregularly curved in the direction traversed generally horizontally by the welding means, as the worn inner surface of a dredge pump housing. The welding means may be supported and moved generally horizontally along the surface in successive welding passes between predetermined points. Provision is made for automatic reversal of the direction of welding when the welding means complete a weld pass at either of the predetermined points. At each weld direction reversal point the welding means are automatically repositioned with respect to the surface to a new effective welding position by motorized shifting of the welding means in predetermined direction and extent at least one of horizontally, vertically and angularly. Such motorized shifting is programmed to produce welding conformance of the welding means to the surface during the deposition of the plurality of generally horizontal contiguous weld beads without welding operator attention.
Inventors
- 👤 Edward E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:55
CPC Classifications
B; B23; B23Q; B23Q9/00; B23Q9/0014; B23K; B23K9/00; B23K9/02; B23K9/032; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/10; B23Q35/101; B23Q35/105; B23Q35/42; B23Q35/44; B23Q5/00; B23Q5/22; B23Q5/34; B23Q5/38; B23Q5/385
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
135 words
In the successive automatic deposition of a plurality of generally horizontal contiguous weld beads upon a nonplanar surface by supporting and moving welding means generally horizontally along the surface in successive welding passes between predetermined points, the improvement consisting of automatically reversing the direction of welding when the welding means complete a weld pass at either of the predetermined points, and at each weld direction reversal point automatically repositioning the welding means with respect to the surface to a new effective welding position by motorized shifting of the welding means in predetermined direction and extent at least one of horizontally, vertically and angularly, and programming such motorized shifting to produce welding conformance of the welding means to the surface during the deposition of said plurality of generally horizontal contiguous weld beads without welding operator attention.
Claim 2
Dependent Claim
135 words
In the successive automatic deposition of a plurality of generally horizontal contiguous weld beads upon a nonplanar surface by supporting and moving welding means generally horizontally along the surface in successive welding passes between predetermined points, the improvement consisting of automatically reversing the direction of welding when the welding means complete a weld pass at either of the predetermined points, and at each weld direction reversal point automatically repositioning the welding means with respect to the surface to a new effective welding position by motorized shifting of the welding means in predetermined direction and extent at least one of horizontally, vertically and angularly, and programming such motorized shifting to produce welding conformance of the welding means to the surface during the deposition of said plurality of generally horizontal contiguous weld beads without welding operator attention.
Claim 3
Dependent Claim
41 words
The improvement defined by claim 1 including selecting and effecting a new program for motorized shifting of the welding means when necessitated by changing contour of the nonplanar surface for the attention-free deposition of the next plurality of contiguous weld beads.
Claim 4
Dependent Claim
38 words
The improvement defined by claim 1 including employing A welding nozzle and feeding continuous consumable welding electrode through the nozzle and maintaining a weld depositing arc between the end of the consumable welding electrode and the nonplanar surface.
Claim 5
Dependent Claim
31 words
The improvement defined by claim 3 including feeding through the nozzle self-shielded tubular continuous consumable welding electrode having broad tolerance for changes in stickout resulting from irregularities in the nonplanar surface.
Claim 6
Dependent Claim
182 words
In the application of weld metal to rebuild the interior surface of a housing for a dredge pump or the like, a method of reducing the amount of time required of the weldor within the interior cavity of the housing and thereby reducing his exposure to fumes, smoke and heat and improving efficiency of the operation, the method comprising providing welding means, maintaining the welding means in welding position with respect to the surface to which weld metal is being applied by means movably attached to a guideway extending substantially parallel to a portion of said surface, feeding continuous consumable electrode wire to the welding means from a source exterior to the housing, incrementally moving the welding means vertically, horizontally and/or angularly and programming the incremental movement of the welding means so that on successive passes over the surface being rebuilt the position of the welding means will be automatically adjusted to produce good overlap and tie-in of adjacent weld beads obviating the necessity of the weldor remaining within the interior cavity of the housing to make the necessary adjustments by hand.
Claim 7
Dependent Claim
182 words
In the application of weld metal to rebuild the interior surface of a housing for a dredge pump or the like, a method of reducing the amount of time required of the weldor within the interior cavity of the housing and thereby reducing his exposure to fumes, smoke and heat and improving efficiency of the operation, the method comprising providing welding means, maintaining the welding means in welding position with respect to the surface to which weld metal is being applied by means movably attached to a guideway extending substantially parallel to a portion of said surface, feeding continuous consumable electrode wire to the welding means from a source exterior to the housing, incrementally moving the welding means vertically, horizontally and/or angularly and programming the incremental movement of the welding means so that on successive passes over the surface being rebuilt the position of the welding means will be automatically adjusted to produce good overlap and tie-in of adjacent weld beads obviating the necessity of the weldor remaining within the interior cavity of the housing to make the necessary adjustments by hand.
Claim 8
Dependent Claim
147 words
Apparatus for the successive automatic deposition of a plurality of generally horizontal contiguous weld beads upon a nonplanar surface comprising means for supporting and moving welding means generally horizontally along the surface in successive welding passes between predetermined points including means for automatically reversing the direction of welding when the welding means complete a weld pass at either of the predetermined points together with means effective at each weld direction reversal point to automatically reposition the welding means with respect to the surface to a new effective welding position comprising motor means and means actuated by the motor means shifting the welding means in predetermined direction and extent at least one of horizontally, vertically and angularly, such shifting of the welding means being programmed to produce welding conformance of the welding means to the surface during the deposition of said plurality of generally horizontal contiguous weld beads.
Claim 9
Dependent Claim
147 words
Apparatus for the successive automatic deposition of a plurality of generally horizontal contiguous weld beads upon a nonplanar surface comprising means for supporting and moving welding means generally horizontally along the surface in successive welding passes between predetermined points including means for automatically reversing the direction of welding when the welding means complete a weld pass at either of the predetermined points together with means effective at each weld direction reversal point to automatically reposition the welding means with respect to the surface to a new effective welding position comprising motor means and means actuated by the motor means shifting the welding means in predetermined direction and extent at least one of horizontally, vertically and angularly, such shifting of the welding means being programmed to produce welding conformance of the welding means to the surface during the deposition of said plurality of generally horizontal contiguous weld beads.
Claim 10
Dependent Claim
177 words
Apparatus for the successive automatic deposition of a plurality of generally horizontal contiguous weld beads upon a nonplanar surface comprising a guideway extending in a generally horizontal direction substantially parallel to a portion of the surface, a carriage movable along the guideway, means for moving the carriage along the guideway from a first predetermined point on the guideway to a second predetermined point on the guideway, means for automatically reversing the direction of carriage movement when the carriage reaches each of said predetermined points, welding means carried by the carriage in position to apply a bead of weld metal to said surface as the carriage moves from one to the other of said predetermined points, means programmed to the shape of the surface for automatically repositioning the welding means in predetermined direction and extent at least one of horizontally, vertically and angularly when the carriage reaches each of said predetermined points, thereby insuring application of the second bead in contiguous relationship to the first bead when the carriage moves in the reverse direction between said predetermined points.
Claim 11
Dependent Claim
177 words
Apparatus for the successive automatic deposition of a plurality of generally horizontal contiguous weld beads upon a nonplanar surface comprising a guideway extending in a generally horizontal direction substantially parallel to a portion of the surface, a carriage movable along the guideway, means for moving the carriage along the guideway from a first predetermined point on the guideway to a second predetermined point on the guideway, means for automatically reversing the direction of carriage movement when the carriage reaches each of said predetermined points, welding means carried by the carriage in position to apply a bead of weld metal to said surface as the carriage moves from one to the other of said predetermined points, means programmed to the shape of the surface for automatically repositioning the welding means in predetermined direction and extent at least one of horizontally, vertically and angularly when the carriage reaches each of said predetermined points, thereby insuring application of the second bead in contiguous relationship to the first bead when the carriage moves in the reverse direction between said predetermined points.
Claim 12
Dependent Claim
60 words
Apparatus for the successive automatic deposition of a plurality of generally horizontal contiguous weld beads upon a nonplanar surface as claimed in claim 7 in which the welding means comprise a welding nozzle, means feeding continuous consumable welding electrode through the nozzle and means maintaining a weld-depositing arc between the end of the consumable welding electrode and the nonplanar surface.
Claim 13
Dependent Claim
132 words
Mechanism for applying contiguous horizontal beads of weld metal progressively along a surface which is irregularly curved in the vertical direction comprising a guideway extending in a horizontal direction generally parallel to the surface, a carriage movable along the guideway, welding means for applying weld metal to the surface, connections between the welding means and carriage whereby the welding means are carried by the carriage for adjustable positioning horizontally, vertically and angularly, adjusting means for effecting such positioning of the welding means and control means programmed to the curvature of the surface in the vertical direction controlling the adjusting means to reposition the welding means at the completion of one bead in proper relationship to the surface for applying the next contiguous bead thereto when the carriage again moves along the guideway.
Claim 14
Dependent Claim
132 words
Mechanism for applying contiguous horizontal beads of weld metal progressively along a surface which is irregularly curved in the vertical direction comprising a guideway extending in a horizontal direction generally parallel to the surface, a carriage movable along the guideway, welding means for applying weld metal to the surface, connections between the welding means and carriage whereby the welding means are carried by the carriage for adjustable positioning horizontally, vertically and angularly, adjusting means for effecting such positioning of the welding means and control means programmed to the curvature of the surface in the vertical direction controlling the adjusting means to reposition the welding means at the completion of one bead in proper relationship to the surface for applying the next contiguous bead thereto when the carriage again moves along the guideway.
Claim 15
Dependent Claim
47 words
Mechanism for applying contiguous horizontal beads of weld metal progressively along a surface which is irregularly curved in the vertical direction as claimed in claim 9 in which the adjusting means include reversible motor means whose period and direction of operation are controlled by the control means.
Claim 16
Dependent Claim
52 words
Mechanism for applying contiguous horizontal beads of weld metal progressively along a surface which is irregularly curved in the vertical direction as claimed in claim 9 in which limit means are provided at each end of the surface together with means operated thereby for reversing the direction of movement of the carriage.
Claim 17
Dependent Claim
144 words
Apparatus for the successive automatic deposition of a plurality of generally horizontal contiguous weld beads upon a nonplanar surface generated by revolving a line about a vertical axis of rotation comprising a horizontal rotating arm supported at and pivoted about a point lying on said axis of rotation, means for rotating the arm about the axis of rotation from a predetermined starting point, welding means carried by the arm in position to apply a first bead of weld metal to the surface as the arm rotates about the axis of rotation and means programmed to the shape of the surface for automatically repositioning the welding means in predetermined direction and extent at least one of horizontally, vertically and angularly when the welding means has completed travelling through a predetermined arc, thereby insuring application of a second bead in contiguous relationship to the first bead.
Claim 18
Dependent Claim
144 words
Apparatus for the successive automatic deposition of a plurality of generally horizontal contiguous weld beads upon a nonplanar surface generated by revolving a line about a vertical axis of rotation comprising a horizontal rotating arm supported at and pivoted about a point lying on said axis of rotation, means for rotating the arm about the axis of rotation from a predetermined starting point, welding means carried by the arm in position to apply a first bead of weld metal to the surface as the arm rotates about the axis of rotation and means programmed to the shape of the surface for automatically repositioning the welding means in predetermined direction and extent at least one of horizontally, vertically and angularly when the welding means has completed travelling through a predetermined arc, thereby insuring application of a second bead in contiguous relationship to the first bead.
Claim 19
Dependent Claim
43 words
Apparatus as claimed in claim 12 including means for automatically reversing the direction of rotation of the arm when the arm has travelled through an arc slightly greater than 360*, whereby to deposit the second bead in reverse direction to the first bead.
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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |