CN-122007799-A - Adjustable rotary welding positioning device for catheter and shaft parts

Abstract

The invention relates to the technical field of mechanical manufacturing and welding tools, in particular to an adjustable and rotatable welding positioning device suitable for cylindrical parts such as a guide pipe, a shaft and the like. The positioning is accurate and quick, quick centering and fine adjustment of the workpiece are realized through matching of the cross grooves and the gaskets, universality is high, the copper gaskets can be adapted to shaft pipe pieces with various specifications and materials, the surfaces of the workpiece are effectively protected, welding quality is high, the workpiece is driven to rotate at a constant speed through linkage, full-circumference uniform welding is realized, welding seam consistency and forming quality are remarkably improved, operation efficiency is high, clamping time is saved by 50% compared with that of a traditional mode, and the copper gaskets can be expanded into an automatic welding unit. In addition, the device has the advantages of good structural rigidity, high safety and low maintenance cost, is particularly suitable for various and small-batch high-quality welding scenes, and has remarkable practical value and popularization prospect.

Inventors

• QU XIAODONG
• ZHANG JITONG
• GE ZHIBAO
• QU HONGXU
• XIE LIJIE
• YIN PENG

Assignees

• 大连长丰实业总公司

Dates

Publication Date

20260512

Application Date

20260323

Claims (5)

1. 1. An adjustable rotary welding positioning device for guide pipe and shaft parts is characterized in that, Consists of a bottom platform (1), a linkage device (2) and a pressing device (3); The bottom platform (1) is provided with a transverse groove (1-1) and a vertical groove (1-2), the transverse groove (1-1) and the vertical groove (1-2) are mutually and vertically communicated, the cross sections are V-shaped, and the cross sections are used for welding gaps of workpieces; The upper surface of the bottom platform (1) is provided with two stud bolt fixing holes (1-3) and two square fixing device threaded holes (1-4); the front surface of the bottom platform (1) is provided with two base linkage bearing holes (1-5), and the base linkage bearing holes (1-5) are internally embedded with bearing seats; the linkage device (2) comprises a circular gasket (2-1), a bearing (2-2) and a linkage rod (2-3); the round gaskets (2-1) are provided with three groups and are equidistantly distributed on the linkage rod (2-3), and the round gaskets (2-1) are in interference fit with the linkage rod (2-3); The linkage rod (2-3) is an equal-diameter optical axis, the structures at the two ends are asymmetric, one end with smaller diameter is a driving end, the end is a small cylindrical ending structure, a key slot is arranged at the end for connecting an external rotary driving source, one end with larger diameter is a supporting end, the end is a large-size disc, the center of the disc is provided with a stepped hole, and the disc is connected with the inner ring of the bearing (2-2) through transition fit; the compressing device (3) comprises an arched bearing beam (3-1), a stud bolt (3-2), a square fixing device (3-3), a fixing nut (3-4), a long rod bolt (3-5), a fixing pin (3-6), a half-round head locking bolt (3-7) and a middle round hole (3-8); two ends of the arched bearing beam (3-1) are respectively provided with a stud bolt (3-2) which is matched with a fixing nut (3-4); The lower end of the long rod bolt (3-5) is sleeved with a square fixing device (3-3), one side of the square fixing device (3-3) is provided with a fixing pin hole, the square fixing device is positioned through a fixing pin (3-6) and aligned with a threaded hole (1-4) of the square fixing device, and the position of the square fixing device (3-3) is fixed through a half-round head locking bolt (3-7); the top of the arched bearing beam (3-1) is provided with a middle round hole (3-8) which is used as a yielding hole to ensure that the pressing device (3) does not interfere when moving up and down.
2. 2. The adjustable rotary welding positioning device for catheter and shaft type parts according to claim 1, wherein, The external rotation driving source is a manual rocking handle, a motor or a speed reducer.
3. 3. The adjustable rotary welding positioning device for catheter and shaft type parts according to claim 1, wherein, The circular gasket (2-1) is made of copper metal so as to reduce damage to the workpiece caused by compaction.
4. 4. The adjustable rotary welding positioning device for catheter and shaft type parts according to claim 1, wherein, The bottom of the base platform (1) is provided with a plurality of stud bolt fixing holes (1-3), and the whole device can be quickly installed on an external workbench through stud bolts (3-2) and fixing nuts (3-4).
5. 5. The adjustable rotary welding positioning device for catheter and shaft type parts according to claim 1, wherein, The long rod bolts (3-5) are provided with a plurality of threaded holes with different heights so as to adapt to lateral support and compaction of workpieces with different diameters.

Description

Adjustable rotary welding positioning device for catheter and shaft parts Technical Field The application relates to the technical field of mechanical manufacturing and welding tools, in particular to an adjustable and rotatable welding positioning device suitable for cylindrical parts such as a guide pipe, a shaft and the like. Background In the aircraft manufacturing process, the shaft is used as an important connection and transmission device of the aircraft, the application is wide and important, and the shaft part cannot be machined and molded at one time in the manufacturing process due to other factors, so that the welding always plays a role in connection. At present, in the welding process of shaft parts, the problems of low concentricity, large welding deformation and the like of the shaft parts are caused by no effective positioning fixture, so that the welding quality is unqualified. Therefore, the application of the positioning platform capable of accurately controlling the coaxiality of the shaft parts in the positioning and welding processes has important significance for improving the welding efficiency and quality of the shaft parts. The existing positioning fixture cannot meet the requirements of positioning accuracy of shaft parts in positioning and deformation control in a welding process, an operation method is inconvenient, welding cannot be conducted in a one-step forming mode, the problem of positioning welding is solved by redesigning a welding positioning platform of the shaft parts, and welding efficiency and quality are improved. Disclosure of Invention The application aims to provide a rotatable positioning device which is simple in structure, convenient to adjust, suitable for various specifications of guide pipes and shaft parts, capable of realizing quick clamping, accurate positioning and uniform rotation of workpieces, and capable of improving welding efficiency and quality. The fixture is a pipe/shaft part clamping and positioning device with modularized design, and the core realizes rapid clamping and full-circle processing through a cross groove positioning system, rotary driving and compaction fixing. The whole base platform (including cross groove), gangbar (rotation axis), circular gasket (work piece bears), top pressure device (vertical compaction), square fixing device (side direction is fixed), stud (rigidity is fixed) and locking part constitute, and work piece centering, compress tightly, rotatory function is accomplished in the cooperation of each module, is applicable to the process that needs full-circle operation such as welding. (1) The base device structure comprises a main body which is a cuboid modularized base (base platform), and positioning reference and component mounting functions are realized through surface orthogonal grooves, symmetrical holes and a protruding structure. Geometric relationship and structural details: The overall geometric parameters of the base are cuboid outlines (length 300mm is multiplied by width 200mm is multiplied by height 50 mm), perpendicularity errors of all surfaces are less than or equal to 0.1mm, and R5mm chamfers (anti-collision) are arranged at four corners. The surface is divided into a functional surface and a mounting surface: the middle part of the functional surface (upper surface) is provided with a cross positioning groove, which is formed by orthogonal transverse grooves and vertical grooves, wherein the horizontal grooves are along the length direction (150 mm long, 10mm wide, 5mm deep and 0.05mm in groove bottom flatness), the vertical grooves are along the width direction (100 mm long, 10mm wide and 5mm deep), the intersection point of the two grooves is a workpiece centering reference, and the side walls of the grooves are provided with scale marks (precision 1 mm) for fine adjustment of the position of the workpiece. Mounting surface (upper/lower surface) the upper surface is equipped with 2 square fixing device screw holes (M8 screw threads) and 2 stud fixing holes (phi 13mm through holes are distributed symmetrically in four corners) The side and hole features that 2 base linked bearing holes (phi 40mm through holes, symmetrically distributed in two cross grooves) are formed in the front surface of the base, bearing seats (10 mm thick) are embedded in the holes, the axis of the installed linked rod is guaranteed to be parallel to the surface of the base (parallelism is less than or equal to 0.1 mm), and side notch (width is 8mm and depth is 3 mm) is used as an auxiliary positioning groove and is in sliding fit with the square fixing device. The base is of a layered structure of a lower layer main body and an upper layer plate (the thickness of the plate is 10mm and the plate is connected with the lower layer through M8 bolts), and the upper layer plate integrates grooves and holes, so that replacement after abrasion is facilitated, and the modularized design is embodied. (2) The linkage device structu