CN111940977B - Bogie frame manipulator welding fixture positioned by utilizing air spring guide post holes - Google Patents

Bogie frame manipulator welding fixture positioned by utilizing air spring guide post holes Download PDF

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Publication number
CN111940977B
CN111940977B CN202010810881.9A CN202010810881A CN111940977B CN 111940977 B CN111940977 B CN 111940977B CN 202010810881 A CN202010810881 A CN 202010810881A CN 111940977 B CN111940977 B CN 111940977B
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positioning
air spring
frame
mechanisms
pressing plate
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CN111940977A (en
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谢元立
李小军
李凯
高国星
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CRRC Changchun Railway Vehicles Co Ltd
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CRRC Changchun Railway Vehicles Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
    • B23K37/04Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
    • B23K37/0426Fixtures for other work
    • B23K37/0435Clamps
    • B23K37/0443Jigs

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Assembly (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

The utility model provides an utilize bogie frame manipulator welding jig of air spring guide pillar hole location, relates to the clamping positioner field of bogie frame, and it includes rectangular frame, two machine butt joint dish, two air spring mount pad location slider mechanisms and four primary spring seat positioning mechanism. The welding fixture can be used as a coordinate system intermediate conversion and transmission device of an H-shaped integral framework machining coordinate system and a welding robot machining coordinate system, so that the superposition of the machining triaxial coordinate system of the H-shaped integral framework and the machining coordinate system of the welding robot is consistent, further, the rapid positioning and accurate welding of different auxiliary structures are realized by means of an automatic programming high-precision welding robot, the production efficiency is improved, the machining precision is improved, the welding deformation is avoided, the reworking and repair rate is greatly reduced, the production cost and man-hour are saved, and considerable economic benefits are created.

Description

Bogie frame manipulator welding fixture positioned by utilizing air spring guide post holes
Technical Field
The invention relates to the field of clamping and positioning devices of bogie frames, in particular to a bogie frame manipulator welding fixture positioned by utilizing an air spring guide column hole.
Background
A mid-plane refers to a cross-sectional plane that symmetrically divides an object having a symmetrical structure into two parts that are mirror images of each other. Thus, the plane in which the transverse centerline of the symmetrical structure lies is defined as the transverse median plane, the plane in which the longitudinal centerline of the symmetrical structure lies is defined as the longitudinal median plane, and the intersection of the transverse median plane and the longitudinal median plane passes through the center of the symmetrical structure.
The bogie frame shown in fig. 1 and 2 comprises a cross beam mechanism 5 in a cross shape like a Chinese character 'jing' and two side beams 6 in a bird wing shape, and a hollow spring assembly through hole 6-2-1 is arranged in the center of an air spring mounting seat 6-2 in the middle section of the side beam 6. The two primary spring seats 6-1 are symmetrically and fixedly connected to two sides of the air spring mounting seat 6-2, and extend outwards in a posture similar to that of a wing tip.
As shown in fig. 3, two side beams 6 are mirror-symmetrically and fixedly connected to two ends of the cross beam mechanism 5, and the three form an approximately letter H-shaped integral frame together, and at the same time, the plane of the rotation axis of the two air spring assembly through holes 6-2-1 is the plane where the transverse symmetry center line of the H-shaped integral frame is located, namely: the middle vertical surface of the H-shaped integral framework.
As the auxiliary structures such as the motor hanging seat and various shock absorber seats on the framework and the subsequent machining procedures such as welding, milling, perforating and the like of the automatic robot are all required to be welded and positioned by taking the theoretical dimension of the standard drawing of the H-shaped integral framework as a reference standard. Therefore, how to realize quick and accurate positioning connection of the H-shaped integral framework and the automatic welding robot positioner is a technical problem which needs to be solved by operators.
Disclosure of Invention
In order to solve the technical problem that the prior H-shaped integral framework is formed by two side beams and a cross beam mechanism in a cross shape like a Chinese character 'jing', the integral structure is wide, thick and complex, and the structure of the H-shaped integral framework is also used as a positioning reference standard for post-machining procedures such as automatic robot welding, milling, perforating and the like, the H-shaped integral framework and an automatic welding robot positioner are required to be quickly and accurately connected, and the invention provides a steering frame manipulator welding fixture positioned by utilizing an air spring guide pillar hole.
The technical scheme adopted for solving the technical problems is as follows:
The welding fixture for the bogie frame manipulator positioned by utilizing the air spring guide post holes comprises a rectangular frame, two positioner butt joint discs, two air spring installation seat positioning slide block mechanisms and four primary spring seat positioning mechanisms; two small frame cross beams are symmetrically arranged in the middle of the rectangular frame in a left-right symmetry manner, and divide the interior of a rectangular window of the rectangular frame into an approximate Chinese character 'mu' -shaped structure; the bottom of each air spring mounting seat positioning sliding block mechanism is fixedly connected to the center of the upper end face of a small frame cross beam in one-to-one correspondence; each spring seat positioning mechanism is fixedly connected to the junction of the end part of a small cross beam of one frame and the outer frame of the rectangular frame; the two positioner butt-joint discs are arranged along the longitudinal center line of the rectangular frame and are fixedly connected to the outer side wall of the outer frame of the rectangular frame in a mirror symmetry mode.
The air spring mounting seat positioning slide block mechanism comprises a longitudinal guide rail, a slide block, an air spring through hole positioning stud, a vertical locking bolt and two strip-shaped nylon cushion blocks, wherein the slide block is in sliding connection with the longitudinal guide rail, and the slide block and the longitudinal guide rail form a horizontal slide block mechanism together; the lower end of the air spring through hole positioning stud is vertically and fixedly connected to the center of the upper end face of the sliding block; the vertical locking bolt is in threaded connection with the top end of the air spring through hole positioning stud; the two strip nylon cushion blocks are parallel to the longitudinal guide rail and are respectively and fixedly connected to two sides of the upper end face of the notch of the longitudinal guide rail in a mirror symmetry mode.
The primary spring seat positioning mechanism comprises a support base, a door-shaped pressing mechanism, two side beam side wall positioning screw mechanisms, a side beam end positioning screw mechanism and four vertical height positioning bolts;
The door-type pressing mechanism, the two side beam side wall positioning screw mechanisms, the side beam end positioning screw mechanism and the plurality of vertical height positioning bolts are all vertically and fixedly connected to the upper end face of the supporting base;
The door type pressing mechanism is fixedly connected to the middle of the upper end face of the supporting base and comprises two vertical screw door posts, a horizontal door frame pressing plate and two door frame pressing plate pressing bolts, wherein each vertical screw door post correspondingly penetrates through one corresponding unthreaded hole at two ends of the horizontal door frame pressing plate, and the door frame pressing plate pressing bolts are in threaded connection with the top ends of one vertical screw door post in a one-to-one correspondence manner and are positioned above the horizontal door frame pressing plate;
The four vertical height positioning bolts are arranged on the left side and the right side of the horizontal door frame pressing plate in a group of two pairs; the threaded screw rods of the two side beam side wall positioning screw rod mechanisms are coaxial with each other and are parallel to the long side direction of the horizontal door frame pressing plate; the rotation axis of the threaded screw rod of the side beam end positioning screw rod mechanism is perpendicular to the middle point of the long side of the horizontal door frame pressing plate, and the rotation axes of the threaded screw rods of the two side beam side wall positioning screw rod mechanisms relative to the side beam end positioning screw rod mechanism are mirror symmetry;
The four spring seat positioning machines are distributed in a rectangular mode, and the horizontal door frame pressing plates of the four spring seat positioning machines are parallel to the longitudinal center line of the rectangular frame.
The vertical height value l=d of the support base.
The beneficial effects of the invention are as follows: the welding fixture is integrally lifted and takes a rectangular frame in a shape of a Chinese character 'mu' as a bearing main body, two air spring installation seat positioning slide block mechanisms with a horizontal distance adjusting function and an air spring through hole positioning stud attached to the air spring installation seat positioning slide block mechanisms are used for realizing the rapid positioning of two air spring assembly through holes on an H-shaped integral framework, and four spring seat positioning mechanisms with a triaxial positioning function are used for realizing the rapid and accurate positioning of a spring seat at two ends of each side beam, so that the welding fixture can be used as a coordinate system intermediate conversion and transmission device of an H-shaped integral framework machining coordinate system and a welding robot machining coordinate system, the coincidence of the machining triaxial coordinate system of the H-shaped integral framework and the machining coordinate system of the welding robot is realized, further, the rapid positioning and accurate welding of different attached structures are realized by means of a high-precision welding robot with automatic programming, the production efficiency is improved, the welding deformation is avoided, the reworking and the adjustment rate are greatly reduced, the production cost and the working time are saved, and considerable economic benefits are created.
Drawings
FIG. 1 is a schematic perspective view of a prior H-shaped monolithic framework;
FIG. 2 is a right side view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a schematic perspective view of a welding fixture for a manipulator of a bogie frame positioned by using an air spring guide post hole;
FIG. 5 is a schematic view of the explosive assembly of FIG. 4;
FIG. 6 is a schematic perspective view of the air spring mount positioning slider mechanism 3 of the present invention;
FIG. 7 is a schematic view of the explosive assembly of FIG. 6;
FIG. 8 is a schematic perspective view of a spring seat positioning mechanism 4 according to the present invention;
Fig. 9 is a schematic application view of a bogie frame manipulator welding jig positioned by using an air spring guide post hole according to the present invention.
Detailed Description
The invention will be described in further detail with reference to the drawings and examples.
As shown in fig. 4 to 8, the welding fixture for the manipulator of the bogie frame positioned by using the air spring guide post holes of the invention comprises a rectangular frame 1, two positioner docking plates 2, two air spring installation seat positioning slide block mechanisms 3 and four primary spring seat positioning mechanisms 4.
Two small frame cross beams 1-1 are symmetrically arranged in the middle of the rectangular frame 1 in a left-right symmetrical mode, and divide the interior of a rectangular window of the rectangular frame 1 into an approximate mesh-shaped structure. The bottom of each air spring mounting seat positioning sliding block mechanism 3 is fixedly connected to the center of the upper end face of a small frame cross beam 1-1 in one-to-one correspondence. Each spring seat positioning mechanism 4 is fixedly connected to the junction of the end part of one small frame cross beam 1-1 and the outer frame of the rectangular frame 1.
The two positioner butt-joint discs 2 are arranged along the longitudinal center line of the rectangular frame 1, and the two positioner butt-joint discs 2 are fixedly connected to the outer side wall of the outer frame of the rectangular frame 1 in a mirror symmetry mode.
The air spring mounting seat positioning slide block mechanism 3 comprises a longitudinal guide rail 3-1, a slide block 3-2, an air spring through hole positioning stud 3-3, a vertical locking bolt 3-4 and two strip nylon cushion blocks 3-5, wherein the slide block 3-2 is in sliding connection with the longitudinal guide rail 3-1, and the two slide blocks form a horizontal slide block mechanism together. The lower end of the air spring through hole positioning stud 3-3 is vertically and fixedly connected with the center of the upper end face of the sliding block 3-2. The vertical locking bolt 3-4 is in threaded connection with the top end of the air spring through hole positioning stud 3-3. The two strip nylon cushion blocks 3-5 are parallel to the longitudinal guide rail 3-1 and are respectively and fixedly connected to two sides of the upper end face of the notch of the longitudinal guide rail 3-1 in a mirror symmetry mode.
The primary spring seat positioning mechanism 4 comprises a support base 4-1, a door-shaped pressing mechanism 4-2, two side beam side wall positioning screw mechanisms 4-3, a side beam end positioning screw mechanism 4-4 and four vertical height positioning bolts 4-5.
The door-type pressing mechanism 4-2, the two side beam side wall positioning screw mechanisms 4-3, the side beam end positioning screw mechanism 4-4 and the plurality of vertical height positioning bolts 4-5 are all vertically and fixedly connected to the upper end face of the supporting base 4-1.
The door-type pressing mechanism 4-2 is fixedly connected to the middle of the upper end face of the supporting base 4-1, and comprises two vertical screw door posts 4-2-1, a horizontal door frame pressing plate 4-2-2 and two door frame pressing plate pressing bolts 4-2-3, each vertical screw door post 4-2-1 correspondingly penetrates through one corresponding unthreaded hole at two ends of the horizontal door frame pressing plate 4-2, and the door frame pressing plate pressing bolts 4-2-3 are in one-to-one correspondence with the top end of one vertical screw door post 4-2-1 in threaded connection and are located above the horizontal door frame pressing plate 4-2-2.
Four vertical height positioning bolts 4-5 are arranged on the left side and the right side of the horizontal door frame pressing plate 4-2-2 in a group. The threaded screws of the two side beam side wall positioning screw mechanisms 4-3 are coaxial with each other and both are parallel to the long side direction of the horizontal door frame pressing plate 4-2-2. The rotation axis of the side beam end positioning screw rod mechanism 4-4 screw rod is perpendicular to the middle point of the long side of the horizontal door frame pressing plate 4-2, and the rotation axes of the two side beam side wall positioning screw rod mechanisms 4-3 screw rods relative to the side beam end positioning screw rod mechanism 4-4 screw rod are mirror symmetry with each other. The door-type compression mechanism 4-2, the two side beam side wall positioning screw mechanisms 4-3, the side beam end positioning screw mechanism 4-4 and the four vertical height positioning bolts 4-5 are matched for use, so that the primary spring seat positioning mechanism 4 has three-axis positioning functions in the transverse direction, the longitudinal direction and the horizontal direction of the primary spring seat 6-1.
The four spring seat positioning mechanisms 4 are distributed in a rectangular shape, and the horizontal door frame pressing plates 4-2-2 of the four spring seat positioning mechanisms are parallel to the longitudinal center line of the rectangular frame 1.
When the welding fixture for the steering frame manipulator positioned by utilizing the air spring guide post holes is specifically applied, as shown in fig. 9, the door frame pressing plate pressing bolts 4-2-3 and the horizontal door frame pressing plates 4-2-2 on the four first-line spring seat positioning mechanisms 4 and the vertical locking bolts 3-4 on each air spring installation seat positioning sliding block mechanism 3 are all detached, then the H-shaped integral framework is hoisted and seated on the welding fixture, the distance between the two sliding blocks 3-2 is respectively adjusted along the longitudinal guide rails 3-1, so that each air spring through hole positioning stud 3-3 passes through one air spring assembly through hole 6-2-1 in a one-to-one correspondence manner, the two air spring installation seats 6-2 are respectively seated on one corresponding longitudinal guide rail 3-1, and the strip-shaped nylon cushion blocks 3-5 are used for playing the role of anti-collision protection, so that the lower end surfaces of the air spring installation seats 6-2 are prevented from being damaged by the longitudinal guide rails 3-1 or scratches caused by friction.
Next, the lower end surfaces of the four primary spring seats 6-1 are respectively seated on a one-to-one corresponding support base 4-1, and the lower end surfaces of the primary spring seats 6-1 are firmly supported by respectively rotating and adjusting each vertical height positioning bolt 4-5. After that, the left and right outer side walls of the primary spring seat 6-1 are longitudinally positioned and propped up by the two side beam side wall positioning screw mechanisms 4-3 on each primary spring seat positioning mechanism 4, and then the outer end faces of the primary spring seat 6-1 are transversely propped up and positioned by the side beam end positioning screw mechanisms 4-4.
Then, the door frame pressing plate pressing bolts 4-2-3 on the four first-line spring seat positioning mechanisms 4 are respectively used for reconnecting the horizontal door frame pressing plates 4-2-2 to the corresponding vertical screw bolt door posts 4-2-1, the upper end faces of the first-line spring seats 6-1 are pressed downwards by utilizing the horizontal door frame pressing plates 4-2-2, then the upper end faces of the air spring assembly through holes 6-2-1 are pressed downwards by screwing the vertical locking bolts 3-4 on each air spring through hole positioning stud 3-3, and the quick fixedly connecting and positioning of the H-shaped integral framework on the welding fixture can be completed, and the machining three-axis coordinate system of the H-shaped integral framework is respectively overlapped with the three-axis coordinate system preset by the welding fixture.
Finally, the welding fixture of the invention fixedly connected with the H-shaped integral framework is integrally hoisted, and the left and right positioner butt-joint discs 2 are respectively matched and fixedly connected with the positioner of the automatic welding robot, so that the coincidence of the machining triaxial coordinate system of the H-shaped integral framework and the machining coordinate system of the welding robot can be realized through the welding fixture of the invention serving as a transmission device of a reference coordinate system, and further, the rapid positioning and accurate welding of different auxiliary structures can be realized by means of the high-precision welding robot with automatic programming, the production efficiency is improved, the machining precision is improved, the welding deformation is avoided, the reworking and adjustment rate is greatly reduced, the production cost and man hour are saved, and considerable economic benefits are created.

Claims (2)

1. Utilize bogie frame manipulator welding jig of air spring guide pillar hole location, its characterized in that: the fixture comprises a rectangular frame (1), two positioner butt joint discs (2), two air spring mounting seat positioning slide block mechanisms (3) and four primary spring seat positioning mechanisms (4);
Two small frame cross beams (1-1) are symmetrically arranged in the middle of the rectangular frame (1) in a left-right mode, and divide the interior of a rectangular window of the rectangular frame (1) into an approximate Chinese character 'mu' shaped structure; the bottom of each air spring mounting seat positioning sliding block mechanism (3) is fixedly connected to the center of the upper end face of a small frame cross beam (1-1) in one-to-one correspondence; each spring seat positioning mechanism (4) is fixedly connected to the junction of the end part of a small frame cross beam (1-1) and the outer frame of the rectangular frame (1);
The two positioner butt-joint discs (2) are arranged along the longitudinal center line of the rectangular frame (1), and the two positioner butt-joint discs (2) are fixedly connected to the outer side wall of the outer frame of the rectangular frame (1) in a mirror symmetry manner;
The air spring mounting seat positioning slide block mechanism (3) comprises a longitudinal guide rail (3-1), a slide block (3-2), an air spring through hole positioning stud (3-3), a vertical locking bolt (3-4) and two strip nylon cushion blocks (3-5), wherein the slide block (3-2) is in sliding connection with the longitudinal guide rail (3-1), and the two slide blocks form a horizontal slide block mechanism together; the lower end of the air spring through hole positioning stud (3-3) is vertically and fixedly connected to the center of the upper end face of the sliding block (3-2); the vertical locking bolt (3-4) is in threaded connection with the top end of the air spring through hole positioning stud (3-3); the two strip-shaped nylon cushion blocks (3-5) are parallel to the longitudinal guide rail (3-1) and are respectively and fixedly connected to two sides of the upper end face of the notch of the longitudinal guide rail (3-1) in a mirror symmetry mode;
The primary spring seat positioning mechanism (4) comprises a supporting base (4-1), a door-shaped pressing mechanism (4-2), two side beam side wall positioning screw mechanisms (4-3), a side beam end positioning screw mechanism (4-4) and four vertical height positioning bolts (4-5);
The door-type pressing mechanism (4-2), the two side beam side wall positioning screw mechanisms (4-3), the side beam end positioning screw mechanism (4-4) and the plurality of vertical height positioning bolts (4-5) are vertically and fixedly connected to the upper end face of the supporting base (4-1);
The door type pressing mechanism (4-2) is fixedly connected to the middle of the upper end face of the supporting base (4-1), and comprises two vertical screw door posts (4-2-1), a horizontal door frame pressing plate (4-2-2) and two door frame pressing plate pressing bolts (4-2-3), wherein each vertical screw door post (4-2-1) correspondingly penetrates through one corresponding unthreaded hole at two ends of the horizontal door frame pressing plate (4-2-2), and the door frame pressing plate pressing bolts (4-2-3) are in threaded connection with the top end of one vertical screw door post (4-2-1) in a one-to-one correspondence manner and are positioned above the horizontal door frame pressing plate (4-2-2);
Four vertical height positioning bolts (4-5) are arranged on the left side and the right side of the horizontal door frame pressing plate (4-2-2) in a group; the threaded lead screws of the two side beam side wall positioning lead screw mechanisms (4-3) are coaxial with each other and are parallel to the long side direction of the horizontal door frame pressing plate (4-2-2); the rotation axis of the threaded screw rod of the side beam end positioning screw rod mechanism (4-4) is perpendicular to the middle point of the long side of the horizontal door frame pressing plate (4-2-2), and the rotation axes of the threaded screw rods of the two side beam side wall positioning screw rod mechanisms (4-3) relative to the side beam end positioning screw rod mechanism (4-4) are mirror symmetry;
the four spring seat positioning mechanisms (4) are distributed in a rectangular shape, and the horizontal door frame pressing plates (4-2-2) of the four spring seat positioning mechanisms are parallel to the longitudinal center line of the rectangular frame (1).
2. The bogie frame manipulator welding jig positioned by using an air spring guide post hole according to claim 1, wherein: the vertical height value l=d of the support base (4-1).
CN202010810881.9A 2020-08-13 2020-08-13 Bogie frame manipulator welding fixture positioned by utilizing air spring guide post holes Active CN111940977B (en)

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CN114012482B (en) * 2021-11-04 2024-04-19 中车南京浦镇车辆有限公司 Positioning tool for bogie frame and positioning method in machine tool
CN113878285A (en) * 2021-11-08 2022-01-04 中车长春轨道客车股份有限公司 Following type positioning tool for welding side beam of bogie of railway vehicle
CN113843569B (en) * 2021-11-12 2024-11-22 中车长春轨道客车股份有限公司 Universal B-type urban rail vehicle bogie frame welding auxiliary tooling
CN114055391B (en) * 2021-11-23 2023-06-20 中车长春轨道客车股份有限公司 Auxiliary installation device for elastic traction center component of bogie
CN115194391A (en) * 2022-08-11 2022-10-18 中车长春轨道客车股份有限公司 Rail Passenger Car Bogie Mounting Seat Composition Pair Tooling
CN116175227A (en) * 2023-01-03 2023-05-30 中车长春轨道客车股份有限公司 A quick clamping tool suitable for low-floor tram frame processing

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