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
  • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
  • B23K37/02—Carriages for supporting the welding or cutting element
  • B23K37/0211—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track
  • B23K37/0229—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track the guide member being situated alongside the workpiece

Definitions

• the invention relates to a welding device according to the preamble of the first claim.
• the invention has for its object to a welding device according to the preamble of the first claim create that enables an automated process of the welding process on welds. This object is achieved according to the invention by the characterizing features of the first claim.
• a processing device which can be used at any location independently of an external energy supply and of guiding or guiding devices installed in the floor. It is only controlled by devices that are assigned to the workpiece to be machined.
• the processing device is equipped with a processing unit with the processing equipment required for the intended work process, at least one processing unit being held on a chassis on a guide support and being adjustable at least in the vertical and horizontal directions.
• the feed of the activated machining unit is carried out by appropriately controlled advancement of the chassis along the work piece to be machined.
• the self-sufficient processing device thus enables the processing unit mounted thereon to be adjusted in a coordinate system in the x, as well as in the y and z directions.
• at least one position sensor sensor device is provided, which mechanically or optically monitors the course of the workpiece section to be processed scans and the processing unit tracks this course by adjusting the guide bracket and / or the chassis.
• a z. B. with combustion gas operated internal combustion engine with coupled electrical generator from which the energy required for the operation and control of the work processes is taken.
• This eliminates electrical connection cables for feeding electrical energy from the electrical supply network, so that the level on which the processing device rolls and the workpiece is freely accessible for other use.
• the wheels of the chassis can be rubber-tired, with parallel guidance to the workpiece being adequately ensured by forming a steerable axis during the feed movement of the chassis via a distance sensor. Unevenness in the run-off level of the chassis and the associated changes in inclination of the chassis or guide carrier are compensated for by a tactile contour sensor assigned to the processing unit. Aligned with the workpiece to be machined
• At least one welding tool is arranged on the guide carrier.
• a grinding tool can be attached to it, which flat-grinds the weld seam even after the welding process.
• a brushing tool to the welding tool, which during the welding process of Aluminum, leading the welding tool, mechanically brushes the weld seam free from oxide layers in order to avoid defects in the weld seam.
• the grinding tool which is fastened together with the welding tool to a turret head, with a brush head before the welding process and to pre-brush weld seams in a controlled manner via the contour sensor.
• the processing unit possibly several tasks
• Carries processing tools on a turret head preferably sits on a cross slide horizontally displaceable transversely to the main direction of travel of the chassis of a cross slide adjustable in height on a guide column of the guide carrier.
• the cross slide position and the feed of the chassis are controlled depending on the tactile position of a tactile or optical contour sensor.
• the welding tool can be assigned its own contour sensor, which scans the open seam.
• the brushing or misting tool can have its own sensor, which can be located in the weld seam or to the side next to the workpiece area currently to be machined, and controls sheet-level grinding of the weld seam down to the level of the side wall area of the workpiece unaffected by the weld seam.
• the one or more tactile or optical sensors can be designed in the manner of a joy stick control device, the control lever of which, as a mechanical touch sensor, senses the tool area to be machined and the position transmitter generates control signals for the adjustment of the guide carrier and / or the chassis feed.
• a quasi-plan level 1 formed by a floor of a workshop stands a car body of a rail vehicle, which is stitched together from a plurality of wall elements 2 and is attached to a plurality of supports 3.
• current-conducting guardrail 4 fixed * which extends in the longitudinal direction of the car body parallel to the plane of the wall elements 2 forming the longitudinal side wall.
• the guardrail 4 is connected to the metallic body shell via flexible electrical conductors 5.
• joints 6, at which the wall elements 2, 2.1 and 2.2 are to be brought into permanent, firm connection by welding. It may be advisable to brush the joints 6 before welding, and after welding a surface grinding of the weld seams may be carried out.
• a machining device is assigned to the body shell, which has a chassis 9 mounted on wheels 7, 8 which are not bound to rails.
• a chassis 9 mounted on wheels 7, 8 which are not bound to rails.
• On the chassis 9 there is an at least largely encapsulated drive and control unit 10, in which an electrical generator with a gas-operated engine coupled to it and various auxiliary devices such as extraction systems, gas storage bottles, electrical and possibly hydraulic drive and control means for autonomous operation of the processing device are accommodated are.
• At least one axle of the wheels 7, 8 or a pair of wheels 7 is steerably held on the chassis 9 and is actively controlled by means of a steering control device 11 Steer control unit 10.
• the pair of wheels 8, on the other hand can be drive-controlled via the control unit 10 for advancing the chassis in the forward or reverse direction.
• the cross slide 14 On the chassis 9 there is a guide support which is formed from a vertically arranged guide column 12, a cross slide 13 mounted thereon in an adjustable manner with an integrated drive unit and a cross slide which can be moved horizontally transversely to the main direction of travel of the chassis 9.
• the cross slide 14 carries a processing unit 15, which comprises a turret disc, on which a welding tool 16 and a grinding or bursting device with a grinding or bursting roller 17 is fixed by approximately 90 °.
• the processing unit can also have separate processing tools for grinding and brushing.
• the turret disc is in particular rotatably mounted about an axis 18 lying in the main direction of travel of the chassis 9 with respect to the cross slide 14 on the guide support 12-14.
• the processing unit 15 is assigned a position sensor unit 19. This can work in the manner of a joy-stick control device and can have a stylus 20 mounted in a circular movement and additionally transversely to its longitudinal direction, that is to say in the manner of a ball joint.
• the guide rail 4 which serves as a welding current return guide, is in an sliding contact with an electrical sliding contact 22 positioned on the chassis 9 via a spring 21, which is connected to the electrical welding current network Welding device is connected.
• a distance sensor 23 is coupled to the sliding contact and determines the distance from the guide rail 4 serving as a mechanical guide rail.
• a mechanical measuring tape 24 is expediently provided for the distance measurement, which is held at its free end in the rolling position on the guide rail 4 via the sliding contact 22 and which, depending on the pull-out position, generates a correspondingly changing control signal in the distance sensor 23, which directs the wheel pair 7 in such a way that that the distance between chassis 9 and guardrail 4 remains at least largely constant d .
• the drive and control unit 10 is activated and the processing device is moved overall when the sliding contact 22 is present on the guide rail 4 to the associated weld 6, into which the stylus 20 engages.
• the cross slide 13 is adjusted along the weld seam 6 with automatic welding agent supply.
• the position sensor unit 19 emits a control signal to a control unit for the cross slide 13, which keeps the same and thus the welding tool 16 at a welding-appropriate distance from the associated weld joint 6 and the vertical adjustment of the cross slide 13 the optimum Welding process effected accordingly.
• Horizontal changes in distance between the welding tool 16 and the weld 6 can be compensated for by mechanically moving the chassis 9 forwards or backwards parallel to the guide rail 4 or mechanically, while the distance between the welding tool and the weld via the position sensor 19 is kept at least approximately constant by a horizontal displacement of the cross slide 14.
• the distance between the welding tools can also be adjusted to an optimal value depending on the welding current.
• the chassis 9 is driven in the direction of the weld joint by means of a motor at a feed rate corresponding to the welding process.
• the sliding contact 22 maintains the welding current feedback over the travel path and the distance sensor 23 controls the steering device 11 so that a largely constant distance from the guide rail 4 is maintained. Deviations in the weld seam 6 are then picked up again by the position sensor 19, the stylus 20 of which then leads the wire electrode of the welding tool 16 in the open weld seam 6.
• the position sensor 19 is appropriately implemented.
• the control signal of the position sensor 19 then brings about a corresponding height correction of the position of the cross slide 13 on the guide column 12 and a correction of the welding tool 16 to the weld joint 6 over the cross slide 14.
• the wheels 7, 8 or corresponding wheel pairs are rail-independent and in particular with rubber-elastic tires provided that roll off level 1 uncontrolled as with road vehicles.
• Changes in position resulting from unevenness in level 1 are also controlled directly via the position transmitter sensors by controlling the cross slide 13 from the position transmitter sensor 19 and the drive device of the chassis in accordance with the deviation detected by the distance sensor 23 in the opposite direction of action.
• Horizontal deviations from the target position determined by the position sensor 19 thus act on the height drive of the cross slide 14 and vertical distance Deviations from the target course of the weld joint in question are compensated for by the cross slide 13.
• the distance sensor 23 By acting on the steering device 11, the distance sensor 23 ensures that a lateral basic distance from the wall elements 2 or the associated weld seams 6 is maintained.
• the distance sensor 23 is provided in the region of the shortest connection between the guide column 12 and the guide rail 4 in order to provide a certain inclination the chassis longitudinal axis compared to the longitudinal axis of the guardrail to achieve as little as possible deviations of the target distance.
• weld seams and their upstream and downstream work processes can be produced without manual intervention, and weld seams can be created in vertical, horizontal or inclined directions, the machining device being self-sufficient and using the plane as the management level to which the workpiece to be machined is also assigned.

Landscapes

• Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
• Machines For Laying And Maintaining Railways (AREA)
• Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
• Lining Or Joining Of Plastics Or The Like (AREA)
• Butt Welding And Welding Of Specific Article (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

ID=7807079

Family Applications (1)

Country Status (10)

Cited By (3)

Families Citing this family (3)

Citations (3)

Family Cites Families (6)

• 1996
  • 1996-09-27 DE DE19639749A patent/DE19639749C2/de not_active Expired - Fee Related
• 1997
  • 1997-09-12 PL PL97331701A patent/PL331701A1/xx unknown
  • 1997-09-12 CA CA002267257A patent/CA2267257A1/en not_active Abandoned
  • 1997-09-12 JP JP10515209A patent/JP2000503598A/ja active Pending
  • 1997-09-12 TR TR1999/00700T patent/TR199900700T2/xx unknown
  • 1997-09-12 EP EP97942025A patent/EP0929377A1/de not_active Withdrawn
  • 1997-09-12 WO PCT/EP1997/004994 patent/WO1998013168A1/de not_active Application Discontinuation
  • 1997-09-12 CZ CZ99416A patent/CZ41699A3/cs unknown
  • 1997-09-12 SK SK370-99A patent/SK37099A3/sk unknown
• 1999
  • 1999-03-25 NO NO991463A patent/NO991463L/no not_active Application Discontinuation

Patent Citations (3)

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