Three-dimensional space size welding guarantee clamp

Abstract

The invention belongs to the technical field of technological equipment design and manufacturing, and discloses a three-dimensional space size welding guarantee clamp which comprises a bottom plate and a vertical plate which are perpendicularly connected with each other. The bottom plate is provided with a receding groove, the positioning plate is concentrically installed on the receding groove, a base of a workpiece is arranged in the positioning groove of the positioning plate and then limited through the pressing plate, the size of the base is larger than that of the receding groove, a containing groove is formed above the vertical plate, the movable vertical plate is installed in the containing groove through the baffle, and the movable vertical plate is arranged in the containing groove. And the pipe head of the workpiece is mounted in the limiting hole of the movable vertical plate through a fastener. The problem that after an existing workpiece of a certain type is welded, welding deformation around a welding seam is serious is solved, and the welding process is simple, convenient, rapid, efficient and accurate.

Description

Technical Field

[0001] This invention belongs to the field of process equipment design and manufacturing technology, and specifically relates to a three-dimensional spatial dimension welding guarantee fixture. Background Technology

[0002] The front and rear arms of a certain type of workpiece are welded using flame brazing. During the welding process, due to the long length of the weld and the irregular fit of the weld, the heating time of the welding torch is long and the heating is uneven, resulting in severe welding deformation around the weld after welding, which makes it impossible to guarantee the three-dimensional spatial dimensions of the workpiece. Summary of the Invention

[0003] This invention addresses the problem of severe welding deformation around the weld seam after welding of a certain type of workpiece. It provides a three-dimensional spatial dimension welding guarantee fixture, which ensures the relative position of the workpiece tube head and the base during the welding process, prevents welding deformation of the front and rear support arms of the workpiece, and ensures that the three-dimensional spatial dimensions of the workpiece after welding meet the requirements of the product drawings. This makes the welding process simple, fast, efficient and precise.

[0004] The technical solution of this invention is implemented as follows: A three-dimensional spatial dimension welding guarantee fixture, comprising: a base plate and a vertical plate that are perpendicularly connected to each other; The base plate has a clearance groove. A positioning plate is concentrically installed on the clearance groove, and the base of the workpiece is placed in the positioning groove of the positioning plate. The workpiece is then positioned by a pressure plate. The size of the base is larger than the size of the clearance groove. The upright plate has a placement groove on its upper part. The movable upright plate is installed in the placement groove by means of a baffle, and the tube end of the workpiece is installed in the limiting hole of the movable upright plate by means of fasteners.

[0005] As a further aspect of the present invention: the base of the workpiece and the positioning groove of the positioning plate are fitted with a small clearance; The movable upright plate can move slightly up and down and left and right in the placement slot of the upright plate.

[0006] As a further aspect of the present invention: the base plate includes a mounting part and a positioning part, which are arranged at an angle; A threaded hole is provided on one side of the mounting part, and the upright plate is fixedly connected to the mounting part by bolts; The positioning part is provided with a relief groove, and the cross-section of the relief groove is trapezoidal, with the top being smaller and the bottom being larger.

[0007] As a further embodiment of the present invention: the positioning plate is concentrically placed on the upper surface of the clearance groove, and is fixedly connected to the positioning part by screws around its perimeter; clearance holes are provided on both sides of the positioning plate. On both sides of the positioning part, there are oblong holes corresponding to the clearance holes. The pressure plate is installed in the oblong holes by fasteners, and one end presses down on the base of the workpiece.

[0008] As a further aspect of the present invention: the pressure plate is designed in an L-shape and is also provided with an oblong hole; The pressure plate is connected in series in the oblong hole by pressure plate screws, and then tightened by knurled nuts.

[0009] As a further aspect of the present invention: expansion grooves are provided on both sides of the positioning groove of the positioning plate.

[0010] As a further aspect of the present invention: the movable upright plate is provided with a circular through hole and a plurality of threaded holes around its perimeter; Place the movable upright plate in the placement slot of the upright plate, and clamp it to the upright plate from all sides by the first baffle and screws.

[0011] As a further aspect of the present invention: the fastener includes a threaded seat, a spherical body, a spherical washer, and a locking nut; The threaded seat is placed in the circular through hole of the movable vertical plate, the spherical body is placed in the threaded seat, the tube end of the workpiece is inserted into the spherical body, a spherical washer is put on, and finally it is fixed by locking the nut.

[0012] As a further aspect of the present invention, the upper end of the movable upright plate is limited by a second baffle.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The spherical gasket, spherical body and threaded seat are used to fix and clamp the pipe head of the workpiece, which is accurate in positioning and easy to disassemble and assemble.

[0014] 2. The movable upright plate drives the threaded base to move up and down and left and right. The ingenious design ensures that even minor errors in the workpiece blank size can be easily loaded into the fixture.

[0015] 3. Fixtures should be used to secure the welding torch and avoid hand-held fixation, thus reducing the risk of burns from the welding torch flame.

[0016] 4. The fixture performs one-time positioning and welding, effectively ensuring the three-dimensional dimensions of the weld, improving production efficiency and reducing rework and scrap costs.

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] Figure 1 This is a three-dimensional assembly drawing of the welding fixture of the present invention (workpiece clamped in place); Figure 2 This is a two-dimensional engineering drawing of the welding fixture of the present invention (workpiece clamped in place); Figure 3 This is a schematic diagram of the structure of the base plate of the present invention; Figure 4 This is a schematic diagram of the structure of the vertical plate of the present invention; Figure 5 This is a schematic diagram of the structure of the workpiece of the present invention; Figure 6 This is a schematic diagram of the threaded seat of the present invention; Figure 7 This is a schematic diagram of the spherical gasket of the present invention; Figure 8 This is a schematic diagram of the structure of the sphere of the present invention; Figure 9 This is a schematic diagram of the knurled nut of the present invention; Figure 10 This is a schematic diagram of the positioning plate of the present invention; Figure 11 This is a schematic diagram of the structure of the movable upright plate of the present invention; Figure 12 This is a schematic diagram of the structure of the pressure plate of the present invention.

[0019] The attached figures are labeled as follows: 1-base plate, 2-vertical plate, 3-workpiece, 4-threaded seat, 5-spherical washer, 6-spherical body, 7-locking nut, 8-positioning plate, 9-movable vertical plate, 10-pressure plate screw, 11-pressure plate, 12-first baffle, 13-second baffle, 14-knurled nut. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be described in more detail below with reference to the accompanying drawings.

[0021] In the accompanying drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of the present invention.

[0022] The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] The following is in conjunction with the appendix Figure 1-12 The embodiments of the present invention will be described in detail below.

[0024] Example 1 This invention provides a three-dimensional spatial dimension welding guarantee fixture, which includes: a base plate 1 and a vertical plate 2 that are perpendicularly connected to each other; The base plate 1 has a relief groove. The positioning plate 8 is concentrically installed on the relief groove. The base of the workpiece is placed in the positioning groove of the positioning plate 8 and then limited by the pressure plate 11. The size of the base is larger than the size of the relief groove. Furthermore, the base plate 1 includes a mounting part and a positioning part, which are arranged at an angle. A threaded hole is provided on one side of the mounting part, and the upright plate 2 is fixedly connected to the mounting part by bolts. A relief groove is provided on the positioning part, and the cross-section of the relief groove is trapezoidal, with the top being smaller and the bottom being larger.

[0025] The upright plate 2 has a placement groove on its top. The movable upright plate 9 is installed in the placement groove through the first baffle 12. The tube end of the workpiece is installed in the limiting hole of the movable upright plate 9 through fasteners. Furthermore, the fastener includes a threaded seat 4, a spherical washer 5, a spherical body 6, and a locking nut 7.

[0026] The threaded seat 4 has an external threaded ring on one side for connecting with a lock nut, a smooth ring on the other side, a mounting flange in the middle for mounting and fixing with the movable upright plate 9, and a smooth hole in the center for mounting a spherical body 6 and a spherical gasket 5.

[0027] The spherical gasket 5 and the spherical body 6 have a spherical taper on one side of their outer shape; Furthermore, the tube end of the workpiece is inserted into the central hole of the spherical body 6, and then the spherical washer 5 is fitted in. By rotating the locking nut 7, the tapered fit between the spherical body 6 and the spherical washer 5 serves to lock and fix the tube end of the workpiece.

[0028] Positioning plate 8, which has a positioning groove inside, is used to position and fix the base of the workpiece; Furthermore, the base of the workpiece and the positioning groove of the positioning plate 8 are fitted with a small clearance. Furthermore, expansion grooves are provided on both sides of the positioning groove to prevent the base of the workpiece from getting stuck in the positioning groove after it expands due to heat during the welding process. Furthermore, the positioning plate 8 is concentrically placed on the upper surface of the clearance groove of the base plate 1, and is fixedly connected to the positioning part by screws around its perimeter. Clearance holes are provided on both sides of the positioning plate 8.

[0029] The movable upright plate 9 has a circular through hole and several threaded holes around its perimeter. Furthermore, the threaded seat 4 is placed in the circular through hole of the movable vertical plate 9, the spherical body 6 is placed in the threaded seat 4, the tube end of the workpiece is inserted into the spherical body 6, the spherical washer 5 is put on, and finally it is fixed by the locking nut 7. Furthermore, the movable upright plate 9 can move slightly up and down and left and right in the placement slot of the upright plate 2; Furthermore, the movable upright plate 9 is placed in the placement slot of the upright plate 2, and is clamped to the upright plate 2 by the first baffle 12 and screws on all sides, and the upper end is limited by the second baffle 13.

[0030] Pressure plate 11 is designed in an L-shape and has a waist-shaped hole; Furthermore, the pressure plate 11 is connected in series with the pressure plate screw 10 in the oblong hole of the base plate 1, and then tightened with the knurled nut 14 to press the base of the workpiece into the positioning plate 8.

[0031] Example 2 This invention provides a three-dimensional spatial dimension welding guarantee fixture. The design structure mainly consists of a base plate 1, a vertical plate 2, a threaded seat 4, a spherical washer 5, a spherical body 6, a locking nut 7, a positioning plate 8, a movable vertical plate 9, a pressure plate screw 10, a pressure plate 11, a first baffle 12, and a second baffle 13. It mainly utilizes the working principle of the positioning plate 8, the movable vertical plate 9, the spherical body 6, the spherical washer 5, and the locking nut 7 to achieve precise positioning of the height and angle of the workpiece during welding. This can effectively guarantee the three-dimensional spatial dimension of the workpiece after welding, improve the processing efficiency, and reduce correction and rework.

[0032] The process of using the three-dimensional spatial dimension welding guarantee fixture: Install the positioning plate 8 concentrically on the relief groove of the base plate 1, and tighten it with screws through the threaded holes around the perimeter.

[0033] Place the workpiece base in the positioning groove of the positioning plate 8, adjust the front, back, left and right positions of the base in the positioning groove, and after the position is appropriate, use the pressure plate 11 to be connected in series with the pressure plate screw 10 in the waist-shaped hole of the base plate 1, and then tighten it with the knurled nut 14 to press the workpiece base into the positioning plate 8.

[0034] Place the threaded seat 4 in the circular through hole of the movable upright plate 9, and tighten it with screws through the threaded holes around the perimeter. Place the spherical body 6 in the threaded seat 4, insert the tube end of the workpiece into the spherical body 6, put on the spherical washer 5, and tighten it with the lock nut 7.

[0035] Adjust the position of the movable upright plate 9 up and down and left and right in the groove of the upright plate 2 to ensure that the base of the workpiece and the upper surface of the base plate 1 are close together without warping, and the tube head of the workpiece is basically parallel to the base. Then, use screws to clamp the left and right sides of the movable upright plate 9 onto the upright plate 1 through the first baffle 12, and install the second baffle 13 at the upper end for limiting.

[0036] Working principle of three-dimensional spatial dimension welding guarantee fixture: The base of the workpiece is fixed by the base plate 1 and the positioning plate 8. The pressure plate 11 is then connected to the oblong hole of the base plate 1 by the pressure plate screws 10 and pressed tightly. The tube head of the workpiece is positioned and fixed by the upright plate 2, the movable upright plate 9, the spherical washer 5, the spherical body 6 and the threaded seat 4. The movable upright plate 9 drives the threaded seat 4 to move slightly up and down and left and right to accurately position the height and angle of the workpiece. The locking nut 7 is tightened to tighten the threaded seat, which drives the spherical washer 5 and the spherical body 6 to move and clamp the tube head of the workpiece. Then welding is performed. During the welding process, the tube head and the base of the workpiece are fixed, which avoids the deformation of the workpiece weld caused by the high temperature of welding and effectively ensures the three-dimensional space dimension of the workpiece. After welding, the knurled small nut 14, the pressure plate 11 and the locking nut 7 are loosened and the workpiece is taken out.

[0037] Thus, the objective of this invention has been achieved.

[0038] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A three-dimensional space dimension welding assurance fixture, characterized by, The utility model relates to a positioning device for workpiece, which comprises: a bottom plate and a vertical plate connected perpendicularly; the bottom plate is provided with a let -by slot, a positioning plate is installed concentrically on the let -by slot, the base of the workpiece is placed in the positioning slot of the positioning plate, and the base is limited through a pressing plate, wherein the size of the base is larger than the size of the let -by slot, the vertical plate is provided with a placing slot above, a movable vertical plate is installed in the placing slot through a baffle, and the pipe head of the workpiece is installed in the limiting hole of the movable vertical plate through a fastener.

2. The three-dimensional space dimensioning weld assurance fixture of claim 1, wherein, The base of the workpiece is matched with the positioning slot of the positioning plate in a small gap; the movable vertical plate can be slightly displaced up and down and left and right in the placing slot of the vertical plate.

3. The three-dimensional space dimensioning weld assurance fixture of claim 1, wherein, The bottom plate comprises an installation part and a positioning part, and the two are arranged at an angle; a threaded hole is arranged on one side of the installation part, and the vertical plate is fixedly connected on the installation part through a bolt; the let -by slot is arranged on the positioning part, and the cross section of the let -by slot is trapezoidal, which is small at the top and large at the bottom.

4. The three-dimensional space dimensioning weld assurance fixture of claim 3, wherein, The positioning plate is concentrically placed on the upper surface of the let -by slot, and is fixedly connected on the positioning part through screws around, let -by holes are arranged on both sides of the positioning plate; waist -shaped holes corresponding to the let -by holes are arranged on both sides of the positioning part, the pressing plate is installed in the waist -shaped holes through a fastener, and one end of the pressing plate presses the base of the workpiece.

5. The three-dimensional space dimensioning weld assurance fixture of claim 4, wherein, The pressing plate is designed as an L type, and the pressing plate is also provided with a waist -shaped hole; the pressing plate is connected in the waist -shaped hole through a pressing plate screw, and is tightened through a knurled small nut.

6. The three-dimensional space dimensioning weld assurance fixture of claim 1, wherein, Expansion slots are arranged on both sides of the positioning slot of the positioning plate.

7. The three-dimensional space dimensioning weld assurance fixture of claim 1, wherein, A circular through hole is arranged on the movable vertical plate, and a plurality of threaded holes are arranged around the circular through hole; the movable vertical plate is placed in the placing slot of the vertical plate, and is clamped on the vertical plate through the first baffle and the screw around.

8. The three-dimensional space dimensioning weld assurance fixture of claim 7, wherein, The fastener comprises a threaded seat, a spherical body, a spherical gasket and a locking nut; the threaded seat is arranged in the circular through hole of the movable vertical plate, the spherical body is arranged in the threaded seat, the pipe head of the workpiece is inserted into the spherical body, the spherical gasket is sleeved, and finally the locking nut is fixed.

9. The three-dimensional space dimensioning weld assurance fixture of claim 7, wherein, The upper end of the movable vertical plate is limited through the second baffle.

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