CN107081555B - Welding fixture for welding connecting rods - Google Patents
Welding fixture for welding connecting rods Download PDFInfo
- Publication number
- CN107081555B CN107081555B CN201710432256.3A CN201710432256A CN107081555B CN 107081555 B CN107081555 B CN 107081555B CN 201710432256 A CN201710432256 A CN 201710432256A CN 107081555 B CN107081555 B CN 107081555B
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- clamping frame
- lead screw
- welding
- threaded
- left clamping
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- 238000003466 welding Methods 0.000 title claims abstract description 55
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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Classifications
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- 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
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
-
- 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
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention provides a welding fixture for welding connecting rods, which comprises a base, wherein a transverse groove is formed in the base, a vertical push rod is arranged in the transverse groove, the bottom end of the vertical push rod is connected with a driving device, the top end of the vertical push rod is connected with a transverse supporting plate, a left clamping frame and a right clamping frame are arranged on the base, a translation lead screw is arranged on the left clamping frame and is in threaded fit connection with the left clamping frame, a fixed positioning conical head is arranged at the bottom end of each of the left clamping frame and the right clamping frame, a threaded lead screw is sleeved at the top end of each of the left clamping frame and the right clamping frame, the threaded lead screw moves up and down under a threaded hole through self rotation, and a movable positioning conical head is arranged at the bottom end of the threaded lead screw. The welding fixture is suitable for square tubes and round tube-shaped connecting rods, connecting rods with different diameters and different widths, wide in application range, high in positioning precision and good in stability, effectively prevents workpieces from being heated and deformed, and is beneficial to improving welding quality.
Description
Technical Field
The invention relates to a welding fixture used in a welding process, in particular to a welding fixture for welding connecting rods.
Background
In the welding production engineering, the welding products often do not reach the standard due to inaccurate workpiece positioning, influence of workpiece product shapes or unreasonable fixation, and the workpieces are bent and deformed due to thermal stress in the welding process. In order to meet the requirements of the welding process, the workpiece is clamped simultaneously by an auxiliary tool from different directions before being welded, so that the stability of the welding process and the reliability of the welding quality are ensured, and the auxiliary tool is also called a welding clamp in daily life. The welding fixture has the main functions of reducing and removing operations of blanking and scribing through accurate positioning and clamping of a welding workpiece, reducing the dimensional tolerance of finished parts, effectively reducing and avoiding deformation caused by thermal stress, and improving the accuracy requirement and the replaceability of the finished parts.
The welding fixture for welding the connecting rods mainly aims to solve the problems of clamping and positioning of the connecting rods in part of the lifting mechanism during welding, generally relates to welding between a long connecting rod and a short circular tube, and cannot meet the requirement of precision welding, particularly welding of medical equipment and high-precision testing instruments because the surface of the circular tube is difficult to fix and accurately position. At present, a welding clamp for welding connecting rods has the following defects: the fixture is only suitable for welding workpieces of one size, and has the advantages of narrow application range, low positioning precision and poor stability of the fixed fixture.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the welding fixture for welding the connecting rods, which is not only suitable for square-tube and round-tube connecting rods, but also suitable for connecting rods with different diameters and different widths, has the advantages of wide application range, high positioning precision, good stability, effective prevention of workpiece thermal deformation, contribution to improvement of welding quality, simple structure and easy manufacture and realization.
In order to achieve the purpose, the invention adopts the technical scheme that:
the welding fixture for welding the connecting rods comprises a base, wherein one end of the base is provided with a transverse groove, one end of the transverse groove is provided with a vertical push rod penetrating through the transverse groove, the bottom end of the vertical push rod is connected with a driving device enabling the vertical push rod to move up and down, the top end of the vertical push rod is connected with a transverse supporting plate, the base is provided with a left clamping frame and a right clamping frame which are opened, the left clamping frame and the right clamping frame are respectively positioned on the left side and the right side of the vertical push rod, the open ends of the left clamping frame and the right clamping frame are oppositely arranged, the right clamping frame is fixed at the end part of the base, the left clamping frame is movably arranged on the transverse groove, the left clamping frame is provided with a translation lead screw fixed on the base, the translation lead screw is connected with the left clamping frame in a thread fit mode, the translation lead screw enables the left clamping frame to linearly move on the transverse groove through rotation of the translation lead screw, the bottom ends of the left clamping frame and the right clamping frame are respectively provided with a fixed positioning conical head, the top ends of the left clamping frame and the right clamping frame are respectively provided with a threaded hole, the threaded holes are sleeved with a threaded lead screw which is connected with the threaded lead screw in a matched mode and is vertically arranged, the threaded lead screw enables the threaded lead screw to vertically move under the threaded holes through rotation of the threaded lead screw, and the bottom end of the threaded lead screw is provided with a movable positioning conical head which is coaxially mounted with the fixed positioning conical head.
As a preferred technical solution, in order to make the driving device can precisely control the moving distance of the vertical push rod, thereby ensuring the precision of positioning, the welding between the connecting rods is improved, and the driving device is a 24-volt direct current motor controlled by a PLC.
As an optimal technical scheme, in order to enable a translation lead screw and a threaded lead screw to be convenient to rotate, so that a left clamping frame and two movable positioning conical heads can move accurately, and the accurate positioning of a welding workpiece can be improved.
Compared with the prior art, the invention has the following beneficial effects:
1. set up two location conical heads, and a location conical head can reciprocate, be applicable to the short connecting rod location of any diameter and length, but set up linear movement's left side and press from both sides tight frame, the horizontal backup pad that can reciprocate, be applicable to the long connecting rod location of different length, different width, change the drawback of current "a anchor clamps work piece", application scope is wide, positioning accuracy is high, stability is good, effectively prevents that the work piece from being heated the deformation, is favorable to improving welding quality, and this welding jig simple structure, easily makes the realization.
2. The driving device of the vertical push rod is scientific and reasonable in arrangement, and the moving distance of the vertical push rod can be accurately controlled, so that the positioning accuracy is ensured, and the improvement of welding between the connecting rods is facilitated.
3. The structure of the translational lead screw and the threaded lead screw is scientific and reasonable, so that the translational lead screw and the threaded lead screw are convenient to rotate, the left clamping frame and the two movable conical heads are enabled to move accurately, and the improvement of the accurate positioning of a welding workpiece is facilitated.
Drawings
The invention is described in further detail below with reference to the figures and the specific embodiments.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the left clamping frame;
FIG. 3 shows the present invention using a working condition diagram;
reference numerals: 1. the device comprises a base, 2, a transverse groove, 3, a vertical push rod, 4, a driving device, 5, a transverse supporting plate, 6, a left clamping frame, 7, a right clamping frame, 8, a driving device mounting frame, 9, a translational lead screw, 10, a fixed positioning conical head, 11, a threaded lead screw, 12 and a movable positioning conical head.
Detailed Description
As shown in fig. 1, a welding jig for welding between connecting rods according to an embodiment of the present invention includes a rectangular base 1, the bottom end of the base 1 is provided with supporting legs, one end of the base 1 is provided with a transverse groove 2, the transverse groove 2 is arranged from the end head of the bottom end 1 to the middle end in the embodiment, one end of the transverse groove 2 is provided with a vertical push rod 3 penetrating through the transverse groove, the bottom end of the vertical push rod 3 is connected with a driving device 4 enabling the vertical push rod to move up and down, the top end of the vertical push rod 3 is connected with a transverse supporting plate 5, the driving device 4 is arranged on a driving device mounting frame 8 fixed on the base 1, a square left clamping frame 6 and a square right clamping frame 7 with openings are arranged on the base 1, the left clamping frame 6 and the right clamping frame 7 are respectively positioned on the left side and the right side of the vertical push rod 3, and the open ends of the left clamping frame 6 and the right clamping frame 7 are oppositely arranged, the right clamping frame 7 is fixed at the end part of the base 1, the left clamping frame 6 is movably arranged on the transverse groove 2, the structure of the left clamping frame 6 is shown in figure 2, the left clamping frame 6 is provided with a translational lead screw 9 fixed on the base 1, the translational lead screw 9 is connected with the left clamping frame 6 in a thread fit way, the translation screw 9 by its own rotation moves the left clamping frame 6 linearly on the transversal groove 6, the bottom ends of the left clamping frame 6 and the right clamping frame 7 are both provided with a fixed positioning conical head 10, the top ends are both provided with a threaded hole, the threaded screw 11 is sleeved on the threaded hole, is in fit connection with the threaded screw and is vertically arranged, the threaded screw 11 is driven to move up and down under the threaded hole through self rotation, the bottom end of the threaded screw rod 11 is provided with a movable positioning conical head 12 which is coaxially arranged with the fixed positioning conical head 10.
The driving device 4 is a 24V direct current motor controlled by a PLC (programmable logic controller), and the motor is controlled by a PLC program, so that the moving distance of the vertical push rod 3 can be accurately controlled, the positioning accuracy is ensured, and the improvement of welding between connecting rods is facilitated.
The end part of the translational lead screw 9 is hinged with a rotating handle vertical to the translational lead screw, the top end of the threaded lead screw 11 is arranged in an arc shape, the arrangement of the mechanism realizes that the translational lead screw 8 and the threaded lead screw 11 can be rotated by small force, thereby ensuring that the left clamping frame 6 and the two movable positioning conical heads 12 move accurately, being beneficial to improving the accurate positioning of a welding workpiece,
when the invention is used: the driving device is connected with a power supply, the circle center of one end of the short connecting rod is aligned to the fixed positioning conical head 10, the threaded lead screw 11 is rotated according to the length of the short connecting rod, the movable positioning conical head is aligned to the circle center of the other end of the short connecting rod, the long connecting rod is arranged on the transverse supporting plate 5, the translational lead screw 9 is rotated according to the length of the long connecting rod, the long connecting rod is contacted with the short connecting rods at two ends, and the driving device 4 accurately controls the moving amount of the vertical push rod 3 according to the welding height position of the long connecting rod and the short connecting rod, so that accurate positioning is realized, as shown in figure 3. The invention is mainly suitable for welding and positioning the square connecting rod and the circular tubes at the two ends of the square connecting rod, is also suitable for welding and positioning the square connecting rod and the circular tubes, is suitable for connecting rods with various sizes, and has wide application range.
It is to be understood that the foregoing detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes in the principle, construction and construction of the invention will become apparent to those skilled in the art from this detailed description.
Claims (3)
1. Welding jig of welding usefulness between connecting rod, its characterized in that: comprises a base (1), one end of the base (1) is provided with a transverse groove (2), one end of the transverse groove (2) is provided with a vertical push rod (3) penetrating through the transverse groove, the bottom end of the vertical push rod (3) is connected with a driving device (4) enabling the vertical push rod to move up and down, the top end of the vertical push rod is connected with a transverse supporting plate (5), the base (1) is provided with a left clamping frame (6) and a right clamping frame (7) with holes, the left clamping frame (6) and the right clamping frame (7) are respectively positioned on the left side and the right side of the vertical push rod (3), the open ends of the left clamping frame (6) and the right clamping frame (7) are oppositely arranged, the right clamping frame (7) is fixed at the end part of the base (1), the left clamping frame (6) is movably arranged on the transverse groove (2), the left clamping frame (6) is provided with a translational lead screw (9) fixed on the base (1), the translational lead screw (9) is in threaded fit connection with the left clamping frame (6), the translational lead screw (9) enables the left clamping frame (6) to move linearly on the transverse groove (2) through rotation of the translational lead screw (9), the bottom ends of the left and right clamping frames (6, 7) are respectively provided with a fixed positioning conical head (10), the top ends of the left and right clamping frames are respectively provided with a threaded hole, the threaded holes are sleeved with a threaded lead screw (11) which is in fit connection with the threaded holes and is vertically arranged, and the threaded lead screws (11) enable the threaded lead screws to move up and down under the threaded holes through rotation of the threaded lead screws (11), the bottom end of the threaded screw rod (11) is provided with a movable positioning conical head (12) which is coaxially arranged with the fixed positioning conical head (10);
the power supply is connected with the driving device (4), the circle center of one end of the short connecting rod is aligned to the fixed positioning conical head (10), the threaded lead screw (11) is rotated according to the length of the short connecting rod, the movable positioning conical head (10) is aligned to the circle center of the other end of the short connecting rod, the long connecting rod is arranged on the transverse supporting plate (5), the translation lead screw (9) is rotated according to the length of the long connecting rod, the long connecting rod is in contact with the short connecting rods at two ends, and the driving device (4) accurately controls the moving amount of the vertical push rod (3) according to the welding height position of the long connecting rod and the short connecting rod, so that accurate positioning is realized.
2. The welding jig for welding between connecting rods according to claim 1, characterized in that: the driving device (4) is a 24V direct current motor controlled by a PLC.
3. The welding jig for welding between connecting rods according to claim 1 or 2, characterized in that: the end part of the translational lead screw (9) is hinged with a rotating handle vertical to the translational lead screw, and the top ends of the threaded lead screws (11) are all arranged in an arc shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710432256.3A CN107081555B (en) | 2017-06-09 | 2017-06-09 | Welding fixture for welding connecting rods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710432256.3A CN107081555B (en) | 2017-06-09 | 2017-06-09 | Welding fixture for welding connecting rods |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107081555A CN107081555A (en) | 2017-08-22 |
| CN107081555B true CN107081555B (en) | 2022-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710432256.3A Expired - Fee Related CN107081555B (en) | 2017-06-09 | 2017-06-09 | Welding fixture for welding connecting rods |
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| Country | Link |
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| CN (1) | CN107081555B (en) |
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| CN107864571B (en) * | 2017-12-21 | 2024-07-19 | 北京深速科技有限公司 | Single tube clamp for PCB welding |
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Citations (6)
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|---|---|---|---|---|
| DE19721594C1 (en) * | 1997-05-23 | 1998-11-19 | Hugo Beck Gmbh & Co Kg Verpack | Cross welding device and method for setting and moving the welding stamp in a cross welding device |
| CN204584557U (en) * | 2015-01-29 | 2015-08-26 | 广州市艾派克智能激光科技有限公司 | A kind of flat panel workpieces vertical masonry joint laser weld positioning fixture |
| CN205184099U (en) * | 2015-09-08 | 2016-04-27 | 洛阳市极诺电动车有限公司 | Half automotive vehicle frame combination welding tool equipment |
| CN205271302U (en) * | 2015-11-19 | 2016-06-01 | 长春捷柯技术开发有限公司 | Pipe seam welding jig |
| CN206216191U (en) * | 2016-10-19 | 2017-06-06 | 中航飞机股份有限公司西安飞机分公司 | A kind of weld jig of undercarriage V-arrangement linkage connector |
| CN206839485U (en) * | 2017-06-09 | 2018-01-05 | 钦州学院 | The weld jig of welding between connecting rod |
-
2017
- 2017-06-09 CN CN201710432256.3A patent/CN107081555B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19721594C1 (en) * | 1997-05-23 | 1998-11-19 | Hugo Beck Gmbh & Co Kg Verpack | Cross welding device and method for setting and moving the welding stamp in a cross welding device |
| CN204584557U (en) * | 2015-01-29 | 2015-08-26 | 广州市艾派克智能激光科技有限公司 | A kind of flat panel workpieces vertical masonry joint laser weld positioning fixture |
| CN205184099U (en) * | 2015-09-08 | 2016-04-27 | 洛阳市极诺电动车有限公司 | Half automotive vehicle frame combination welding tool equipment |
| CN205271302U (en) * | 2015-11-19 | 2016-06-01 | 长春捷柯技术开发有限公司 | Pipe seam welding jig |
| CN206216191U (en) * | 2016-10-19 | 2017-06-06 | 中航飞机股份有限公司西安飞机分公司 | A kind of weld jig of undercarriage V-arrangement linkage connector |
| CN206839485U (en) * | 2017-06-09 | 2018-01-05 | 钦州学院 | The weld jig of welding between connecting rod |
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| CN107081555A (en) | 2017-08-22 |
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Granted publication date: 20221122 |